Re: [PATCH v2 1/1] drm/i915: Use the correct max source link rate for MST
Alright - I had Ville double check this and give their A-B on IRC (I just need
to fix the open coded link_rate_to_bw() here). Since this got broken on drm-
misc-next I'm going to go ahead and push the fix there, since I'm not going to
be around next Monday or Tuesday and I don't want to leave i915 broken in the
interim. Sorry about the noise with this Jani!
As well - I'll get to fixing the dpcd unit usage once I get back on Wednesday
(unless Nikola's already gotten to it by then) so we use KHz instead. Although
as ville has pointed out, I think we should teach the topology manager to allow
passing for the current link rate/lane count during state computation in the
long term.
On Fri, 2021-04-30 at 17:45 -0400, Nikola Cornij wrote:
> [why]
> Previously used value was not safe to provide the correct value, i.e. it
> could be 0 if not not configured, leading to no MST on this platform.
>
> [how]
> Do not use the value from BIOS, but from the structure populated at
> encoder initialization time.
>
> Fixes: 98025a62cb00 ("drm/dp_mst: Use Extended Base Receiver Capability DPCD
> space")
> Signed-off-by: Nikola Cornij
> Reviewed-by: Lyude Paul
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index bf7f8487945c..3642d7578658 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -942,7 +942,7 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
> struct intel_dp *intel_dp = _port->dp;
> enum port port = dig_port->base.port;
> int ret;
> - int bios_max_link_rate;
> + int max_source_rate = intel_dp->source_rates[intel_dp-
> >num_source_rates - 1];
>
> if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
> return 0;
> @@ -957,11 +957,11 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
>
> /* create encoders */
> intel_dp_create_fake_mst_encoders(dig_port);
> - bios_max_link_rate = intel_bios_dp_max_link_rate(_port->base);
> ret = drm_dp_mst_topology_mgr_init(_dp->mst_mgr, >drm,
> _dp->aux, 16, 3,
> (u8)dig_port->max_lanes,
> - (u8)(bios_max_link_rate / 27000),
> conn_base_id);
> + (u8)(max_source_rate / 27000),
> + conn_base_id);
> if (ret)
> return ret;
>
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
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[PATCH 2/2] drm/dp: Drop open-coded drm_dp_is_branch() in drm_dp_read_downstream_info()
Noticed this while fixing another issue in drm_dp_read_downstream_info(), the open coded DP_DOWNSTREAMPORT_PRESENT check here just duplicates what we already do in drm_dp_is_branch(), so just get rid of it. Signed-off-by: Lyude Paul --- drivers/gpu/drm/drm_dp_helper.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 27c8c5bdf7d9..0f84df8798ab 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -677,9 +677,7 @@ int drm_dp_read_downstream_info(struct drm_dp_aux *aux, memset(downstream_ports, 0, DP_MAX_DOWNSTREAM_PORTS); /* No downstream info to read */ - if (!drm_dp_is_branch(dpcd) || - dpcd[DP_DPCD_REV] < DP_DPCD_REV_10 || - !(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) + if (!drm_dp_is_branch(dpcd) || dpcd[DP_DPCD_REV] < DP_DPCD_REV_10) return 0; /* Some branches advertise having 0 downstream ports, despite also advertising they have a -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH 1/2] drm/dp: Handle zeroed port counts in drm_dp_read_downstream_info()
While the DP specification isn't entirely clear on if this should be
allowed or not, some branch devices report having downstream ports present
while also reporting a downstream port count of 0. So to avoid breaking
those devices, we need to handle this in drm_dp_read_downstream_info().
So, to do this we assume there's no downstream port info when the
downstream port count is 0.
Signed-off-by: Lyude Paul
Tested-by: Jérôme de Bretagne
Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3416
Fixes: 3d3721ccb18a ("drm/i915/dp: Extract drm_dp_read_downstream_info()")
Cc: # v5.10+
---
drivers/gpu/drm/drm_dp_helper.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index cb56d74e9d38..27c8c5bdf7d9 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -682,7 +682,14 @@ int drm_dp_read_downstream_info(struct drm_dp_aux *aux,
!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT))
return 0;
+ /* Some branches advertise having 0 downstream ports, despite also
advertising they have a
+* downstream port present. The DP spec isn't clear on if this is
allowed or not, but since
+* some branches do it we need to handle it regardless.
+*/
len = drm_dp_downstream_port_count(dpcd);
+ if (!len)
+ return 0;
+
if (dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DETAILED_CAP_INFO_AVAILABLE)
len *= 4;
--
2.30.2
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Re: [PATCH v1 1/1] drm/dp_mst: Use the correct max source link rate for i915
On Fri, 2021-04-30 at 17:22 -0400, Nikola Cornij wrote:
> [why]
> Previously used value was not safe to provide the correct value, i.e. it
> could be 0 if not not configured, leading to no MST on this platform.
>
> [how]
> Do not use the value from BIOS, but from the structure populated at
> encoder initialization time.
>
> Fixes: 98025a62cb00 ("drm/dp_mst: Use Extended Base Receiver Capability DPCD
> space")
> Signed-off-by: Nikola Cornij
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index bf7f8487945c..01a0ed99988f 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -942,7 +942,6 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
> struct intel_dp *intel_dp = _port->dp;
> enum port port = dig_port->base.port;
> int ret;
> - int bios_max_link_rate;
>
> if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
> return 0;
> @@ -957,11 +956,11 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
>
> /* create encoders */
> intel_dp_create_fake_mst_encoders(dig_port);
> - bios_max_link_rate = intel_bios_dp_max_link_rate(_port->base);
> ret = drm_dp_mst_topology_mgr_init(_dp->mst_mgr, >drm,
> _dp->aux, 16, 3,
> (u8)dig_port->max_lanes,
> - (u8)(bios_max_link_rate / 27000),
> conn_base_id);
> + (u8)(intel_dp-
> >source_rates[intel_dp->num_source_rates - 1] / 27000),
> + conn_base_id);
This line is kind of long, I'd say we should just store the max link rate in a
local variable like max_link_rate, then just pass that to
drm_dp_mst_topology_mgr_init()
Also, the commit message should probably be:
drm/i915: Use the correct max source link rate for MST
With those two things fixed:
Reviewed-by: Lyude Paul
> if (ret)
> return ret;
>
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
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Re: [v3 2/2] backlight: Add DisplayPort aux backlight driver
l;
> > +
> > + aux_bl = devm_kzalloc(>dev, sizeof(*aux_bl), GFP_KERNEL);
> > + if (!aux_bl)
> > + return -ENOMEM;
> > +
> > + aux_bl->dev = >dev;
> > +
> > + np = of_parse_phandle(pdev->dev.of_node, "ddc-i2c-bus", 0);
> > + if (!np) {
> > + dev_err(>dev, "failed to get aux ddc I2C bus\n");
> > + return -ENODEV;
> > + }
> > +
> > + ddc = of_find_i2c_adapter_by_node(np);
> > + of_node_put(np);
> > + if (!ddc)
> > + return -EPROBE_DEFER;
> > +
> > + aux_bl->aux = i2c_to_aux(ddc);
> > + dev_dbg(>dev, "using dp aux %s\n", aux_bl->aux->name);
> > +
> > + aux_bl->enable_gpio = devm_gpiod_get_optional(>dev,
> > "enable",
> > + GPIOD_OUT_LOW);
> > + if (IS_ERR(aux_bl->enable_gpio)) {
> > + ret = PTR_ERR(aux_bl->enable_gpio);
> > + goto free_ddc;
> > + }
> > +
> > + val = DP_AUX_MAX_BRIGHTNESS;
> > + of_property_read_u32(pdev->dev.of_node, "max-brightness", );
> > + if (val > DP_AUX_MAX_BRIGHTNESS)
> > + val = DP_AUX_MAX_BRIGHTNESS;
> > +
> > + bl_props.max_brightness = val;
> > + bl_props.brightness = val;
> > + bl_props.type = BACKLIGHT_RAW;
> > + bd = devm_backlight_device_register(>dev, dev_name(
> > >dev),
> > + >dev, aux_bl,
> > + _bl_ops, _props);
> > + if (IS_ERR(bd)) {
> > + ret = PTR_ERR(bd);
> > + dev_err(>dev,
> > + "failed to register backlight (%d)\n", ret);
> > + goto free_ddc;
> > + }
> > +
> > + platform_set_drvdata(pdev, bd);
> > +
> > + return 0;
> > +
> > +free_ddc:
> > + if (ddc)
> > + put_device(>dev);
> > +
> > + return ret;
> > +}
> > +
> > +static int dp_aux_backlight_remove(struct platform_device *pdev)
> > +{
> > + struct backlight_device *bd = platform_get_drvdata(pdev);
> > + struct dp_aux_backlight *aux_bl = bl_get_data(bd);
> > + struct i2c_adapter *ddc = _bl->aux->ddc;
> > +
> > + if (ddc)
> > + put_device(>dev);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct of_device_id dp_aux_bl_of_match_table[] = {
> > + { .compatible = "dp-aux-backlight"},
> > + {},
> > +};
> > +MODULE_DEVICE_TABLE(of, dp_aux_bl_of_match_table);
> > +
> > +static struct platform_driver dp_aux_backlight_driver = {
> > + .driver = {
> > + .name = "dp-aux-backlight",
> > + .of_match_table = dp_aux_bl_of_match_table,
> > + },
> > + .probe = dp_aux_backlight_probe,
> > + .remove = dp_aux_backlight_remove,
> > +
> > +};
> > +module_platform_driver(dp_aux_backlight_driver);
> > +
> > +MODULE_DESCRIPTION("DisplayPort aux backlight driver");
> > +MODULE_LICENSE("GPL v2");
>
--
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat
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[Heads up to maintainers] Re: [PATCH v8 1/1] drm/drm_mst: Use Extended Base Receiver Capability DPCD space
;aux, DP_DOWNSTREAMPORT_PRESENT,
> - , 1) < 0)
> + if (drm_dp_read_dpcd_caps(port->mgr->aux, dpcd_ext) < 0)
> return NULL;
>
> - if ((downstreamport & DP_DWN_STRM_PORT_PRESENT) &&
> - ((downstreamport & DP_DWN_STRM_PORT_TYPE_MASK)
> + if ((dpcd_ext[DP_DOWNSTREAMPORT_PRESENT] &
> DP_DWN_STRM_PORT_PRESENT) &&
> + ((dpcd_ext[DP_DOWNSTREAMPORT_PRESENT] &
> DP_DWN_STRM_PORT_TYPE_MASK)
> != DP_DWN_STRM_PORT_TYPE_ANALOG))
> return port->mgr->aux;
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index 860381d68d9d..a4245eb48ef4 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -942,6 +942,7 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
> struct intel_dp *intel_dp = _port->dp;
> enum port port = dig_port->base.port;
> int ret;
> + int bios_max_link_rate;
>
> if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
> return 0;
> @@ -956,8 +957,11 @@ intel_dp_mst_encoder_init(struct intel_digital_port
> *dig_port, int conn_base_id)
>
> /* create encoders */
> intel_dp_create_fake_mst_encoders(dig_port);
> + bios_max_link_rate = intel_bios_dp_max_link_rate(_port->base);
> ret = drm_dp_mst_topology_mgr_init(_dp->mst_mgr, >drm,
> - _dp->aux, 16, 3,
> conn_base_id);
> + _dp->aux, 16, 3,
> + dig_port->max_lanes,
> + bios_max_link_rate / 27000,
> conn_base_id);
> if (ret)
> return ret;
>
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> index 1c9c0cdf85db..e02f9d2d74eb 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
> @@ -1617,7 +1617,8 @@ nv50_mstm_new(struct nouveau_encoder *outp, struct
> drm_dp_aux *aux, int aux_max,
> mstm->mgr.cbs = _mstm;
>
> ret = drm_dp_mst_topology_mgr_init(>mgr, dev, aux, aux_max,
> - max_payloads, conn_base_id);
> + max_payloads, outp->dcb-
> >dpconf.link_nr,
> + outp->dcb->dpconf.link_bw,
> conn_base_id);
> if (ret)
> return ret;
>
> diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c
> b/drivers/gpu/drm/radeon/radeon_dp_mst.c
> index 59cf1d288465..8f0b2dccd199 100644
> --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
> +++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
> @@ -629,13 +629,20 @@ int
> radeon_dp_mst_init(struct radeon_connector *radeon_connector)
> {
> struct drm_device *dev = radeon_connector->base.dev;
> + int max_link_rate;
>
> if (!radeon_connector->ddc_bus->has_aux)
> return 0;
>
> + if (radeon_connector_is_dp12_capable(_connector->base))
> + max_link_rate = 0x14;
> + else
> + max_link_rate = 0x0a;
> +
> radeon_connector->mst_mgr.cbs = _cbs;
> return drm_dp_mst_topology_mgr_init(_connector->mst_mgr, dev,
> _connector->ddc_bus->aux,
> 16, 6,
> + 4, max_link_rate,
> radeon_connector->base.base.id);
> }
>
> diff --git a/include/drm/drm_dp_mst_helper.h
> b/include/drm/drm_dp_mst_helper.h
> index 20dc705642bd..b5b0bf37813b 100644
> --- a/include/drm/drm_dp_mst_helper.h
> +++ b/include/drm/drm_dp_mst_helper.h
> @@ -593,6 +593,14 @@ struct drm_dp_mst_topology_mgr {
> * @max_payloads: maximum number of payloads the GPU can generate.
> */
> int max_payloads;
> + /**
> + * @max_lane_count: maximum number of lanes the GPU can drive.
> + */
> + int max_lane_count;
> + /**
> + * @max_link_rate: maximum link rate per lane GPU can output.
> + */
> + int max_link_rate;
> /**
> * @conn_base_id: DRM connector ID this mgr is connected to. Only
> used
> * to build the MST connector path value.
> @@ -765,7 +773,9 @@ struct drm_dp_mst_topology_mgr {
> int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr,
> struct drm_device *dev, struct drm_dp_aux
> *aux,
> int max_dpcd_transaction_bytes,
> - int max_payloads, int conn_base_id);
> + int max_payloads,
> + int max_lane_count, int max_link_rate,
> + int conn_base_id);
>
> void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr);
>
--
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat
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Re: [PATCH 1/2] drm/tegra: Get ref for DP AUX channel, not its ddc adapter
On Mon, 2021-04-26 at 09:42 +0200, Thierry Reding wrote:
> On Fri, Apr 23, 2021 at 02:21:45PM -0400, Lyude Paul wrote:
> > While we're taking a reference of the DDC adapter for a DP AUX channel in
> > tegra_sor_probe() because we're going to be using that adapter with the
> > SOR, now that we've moved where AUX registration happens the actual device
> > structure for the DDC adapter isn't initialized yet. Which means that we
> > can't really take a reference from it to try to keep it around anymore.
> >
> > This should be fine though, because we can just take a reference of its
> > parent instead.
> >
> > Signed-off-by: Lyude Paul
> > Fixes: 39c17ae60ea9 ("drm/tegra: Don't register DP AUX channels before
> > connectors")
> > Cc: Lyude Paul
> > Cc: Thierry Reding
> > Cc: Jonathan Hunter
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: linux-te...@vger.kernel.org
> > ---
> > drivers/gpu/drm/tegra/sor.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
> > index 7b88261f57bb..4e0e3a63e586 100644
> > --- a/drivers/gpu/drm/tegra/sor.c
> > +++ b/drivers/gpu/drm/tegra/sor.c
> > @@ -3739,11 +3739,11 @@ static int tegra_sor_probe(struct platform_device
> > *pdev)
> > if (!sor->aux)
> > return -EPROBE_DEFER;
> >
> > - if (get_device(>aux->ddc.dev)) {
> > - if (try_module_get(sor->aux->ddc.owner))
> > + if (get_device(sor->aux->dev)) {
> > + if (try_module_get(sor->aux->dev->driver->owner))
> > sor->output.ddc = >aux->ddc;
> > else
> > - put_device(>aux->ddc.dev);
> > + put_device(sor->aux->dev);
> > }
> > }
>
> Unfortunately, I think it's a bit more subtle than that. The reason for
> this get_device()/try_module_get() dance was to mirror the behaviour of
> of_get_i2c_adapter_by_node() so that when we call i2c_put_adapter() in
> tegra_output_remove() we correctly decrease the reference count.
>
> The above will increase the reference on the I2C adapter's parent while
> i2c_put_adapter() will then only decrease the reference on the I2C
> adapter, so I think effectively we'd be leaking a reference to the I2C
> adapter's parent.
>
> Also, since we didn't take a reference on the I2C adapter explicitly,
> releasing that reference in tegra_output_remove() might free the I2C
> adapter too early.
>
> I wonder if perhaps it'd be easier to get rid of the struct tegra_output
> abstraction altogether and push this down into the individual drivers,
> even if that means a bit more code duplication. That's not the kind of
> quick fix to resolve this current situation, so perhaps as a stop-gap we
> just need to sprinkle a few more conditionals throughout tegra_output
> code. We could, for example, avoid calling i2c_put_adapter() in
> tegra_output_remove() for the DisplayPort cases and instead manually
> release the reference to the I2C adapter's parent in tegra_sor_remove().
> On top of your patch above that /should/ fix things properly for now.
Alright - I will try to get to this tomorrow
>
> Thierry
--
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat
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[PATCH v4 17/17] drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*()
And finally, convert all of the code in drm_dp_mst_topology.c over to using
drm_err() and drm_dbg*(). Note that this refactor would have been a lot
more complicated to have tried writing a coccinelle script for, so this
whole thing was done by hand.
v2:
* Fix line-wrapping in drm_dp_mst_atomic_check_mstb_bw_limit()
Signed-off-by: Lyude Paul
Cc: Robert Foss
Reviewed-by: Robert Foss
---
drivers/gpu/drm/drm_dp_mst_topology.c | 368 +-
1 file changed, 187 insertions(+), 181 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 9bac5bd050ab..5539a91b4031 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -286,7 +286,8 @@ static void drm_dp_encode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
*len = idx;
}
-static bool drm_dp_decode_sideband_msg_hdr(struct drm_dp_sideband_msg_hdr *hdr,
+static bool drm_dp_decode_sideband_msg_hdr(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_hdr *hdr,
u8 *buf, int buflen, u8 *hdrlen)
{
u8 crc4;
@@ -303,7 +304,7 @@ static bool drm_dp_decode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
crc4 = drm_dp_msg_header_crc4(buf, (len * 2) - 1);
if ((crc4 & 0xf) != (buf[len - 1] & 0xf)) {
- DRM_DEBUG_KMS("crc4 mismatch 0x%x 0x%x\n", crc4, buf[len - 1]);
+ drm_dbg_kms(mgr->dev, "crc4 mismatch 0x%x 0x%x\n", crc4,
buf[len - 1]);
return false;
}
@@ -789,7 +790,8 @@ static bool drm_dp_sideband_append_payload(struct
drm_dp_sideband_msg_rx *msg,
return true;
}
-static bool drm_dp_sideband_parse_link_address(struct drm_dp_sideband_msg_rx
*raw,
+static bool drm_dp_sideband_parse_link_address(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
struct
drm_dp_sideband_msg_reply_body *repmsg)
{
int idx = 1;
@@ -1014,7 +1016,8 @@ drm_dp_sideband_parse_query_stream_enc_status(
return true;
}
-static bool drm_dp_sideband_parse_reply(struct drm_dp_sideband_msg_rx *raw,
+static bool drm_dp_sideband_parse_reply(const struct drm_dp_mst_topology_mgr
*mgr,
+ struct drm_dp_sideband_msg_rx *raw,
struct drm_dp_sideband_msg_reply_body
*msg)
{
memset(msg, 0, sizeof(*msg));
@@ -1030,7 +1033,7 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
switch (msg->req_type) {
case DP_LINK_ADDRESS:
- return drm_dp_sideband_parse_link_address(raw, msg);
+ return drm_dp_sideband_parse_link_address(mgr, raw, msg);
case DP_QUERY_PAYLOAD:
return drm_dp_sideband_parse_query_payload_ack(raw, msg);
case DP_REMOTE_DPCD_READ:
@@ -1053,14 +1056,16 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
case DP_QUERY_STREAM_ENC_STATUS:
return drm_dp_sideband_parse_query_stream_enc_status(raw, msg);
default:
- DRM_ERROR("Got unknown reply 0x%02x (%s)\n", msg->req_type,
- drm_dp_mst_req_type_str(msg->req_type));
+ drm_err(mgr->dev, "Got unknown reply 0x%02x (%s)\n",
+ msg->req_type, drm_dp_mst_req_type_str(msg->req_type));
return false;
}
}
-static bool drm_dp_sideband_parse_connection_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool
+drm_dp_sideband_parse_connection_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
+ struct
drm_dp_sideband_msg_req_body *msg)
{
int idx = 1;
@@ -1082,12 +1087,14 @@ static bool
drm_dp_sideband_parse_connection_status_notify(struct drm_dp_sideban
idx++;
return true;
fail_len:
- DRM_DEBUG_KMS("connection status reply parse length fail %d %d\n", idx,
raw->curlen);
+ drm_dbg_kms(mgr->dev, "connection status reply parse length fail %d
%d\n",
+ idx, raw->curlen);
return false;
}
-static bool drm_dp_sideband_parse_resource_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool drm_dp_sideband_parse_resource_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+st
[PATCH v4 14/17] drm/print: Handle potentially NULL drm_devices in drm_dbg_*
While this shouldn't really be something that happens all that often, since we're going to be using the drm_dbg_* log helpers in DRM helpers it's technically possible that a driver could use an AUX adapter before it's been associated with it's respective drm_device. While drivers should take care to avoid this, there's likely going to be situations where it's difficult to workaround. And since other logging helpers in the kernel tend to be OK with NULL pointers (for instance, passing a NULL pointer to a "%s" argument for a printk-like function in the kernel doesn't break anything), we should do the same for ours. Signed-off-by: Lyude Paul --- include/drm/drm_print.h | 20 ++-- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index a3c58c941bdc..9b66be54dd16 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -443,25 +443,25 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, #define drm_dbg_core(drm, fmt, ...)\ - drm_dev_dbg((drm)->dev, DRM_UT_CORE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_CORE, fmt, ##__VA_ARGS__) #define drm_dbg(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) #define drm_dbg_kms(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_KMS, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_KMS, fmt, ##__VA_ARGS__) #define drm_dbg_prime(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_PRIME, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_PRIME, fmt, ##__VA_ARGS__) #define drm_dbg_atomic(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) #define drm_dbg_vbl(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_VBL, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_VBL, fmt, ##__VA_ARGS__) #define drm_dbg_state(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_STATE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_STATE, fmt, ##__VA_ARGS__) #define drm_dbg_lease(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_LEASE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_LEASE, fmt, ##__VA_ARGS__) #define drm_dbg_dp(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DP, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DP, fmt, ##__VA_ARGS__) #define drm_dbg_drmres(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) /* -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v4 13/17] drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw()
Since this is one of the few functions in drm_dp_mst_topology.c that
doesn't have any way of getting access to a drm_device, let's pass the
drm_dp_mst_topology_mgr down to this function so that it can use
drm_dbg_kms().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_mst_topology.c | 7 +--
drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++-
include/drm/drm_dp_mst_helper.h | 3 ++-
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 276f7f054d62..9bac5bd050ab 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -3638,6 +3638,7 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
/**
* drm_dp_get_vc_payload_bw - get the VC payload BW for an MST link
+ * @mgr: The _dp_mst_topology_mgr to use
* @link_rate: link rate in 10kbits/s units
* @link_lane_count: lane count
*
@@ -3646,7 +3647,8 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
* convert the number of PBNs required for a given stream to the number of
* timeslots this stream requires in each MTP.
*/
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count)
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count)
{
if (link_rate == 0 || link_lane_count == 0)
DRM_DEBUG_KMS("invalid link rate/lane count: (%d / %d)\n",
@@ -3711,7 +3713,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct
drm_dp_mst_topology_mgr *mgr, bool ms
goto out_unlock;
}
- mgr->pbn_div =
drm_dp_get_vc_payload_bw(drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
+ mgr->pbn_div = drm_dp_get_vc_payload_bw(mgr,
+
drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
mgr->dpcd[2] &
DP_MAX_LANE_COUNT_MASK);
if (mgr->pbn_div == 0) {
ret = -EINVAL;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 180f97cd74cb..eb04b3cefda2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -70,7 +70,8 @@ static int intel_dp_mst_compute_link_config(struct
intel_encoder *encoder,
slots = drm_dp_atomic_find_vcpi_slots(state, _dp->mst_mgr,
connector->port,
crtc_state->pbn,
-
drm_dp_get_vc_payload_bw(crtc_state->port_clock,
+
drm_dp_get_vc_payload_bw(_dp->mst_mgr,
+
crtc_state->port_clock,
crtc_state->lane_count));
if (slots == -EDEADLK)
return slots;
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index bd1c39907b92..20dc705642bd 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -783,7 +783,8 @@ drm_dp_mst_detect_port(struct drm_connector *connector,
struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct
drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count);
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count);
int drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc);
--
2.30.2
___
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v4 15/17] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*()
Now that we've added a back-pointer to drm_device to drm_dp_aux, made
drm_dp_aux available to any functions in drm_dp_helper.c which need to
print to the kernel log, and ensured all of our logging uses a consistent
format, let's do the final step of the conversion and actually move
everything over to using drm_err() and drm_dbg_*().
This was done by using the following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(aux->drm_dev, expr);
|
- DRM_DEBUG_DP(expr);
+ drm_dbg_dp(aux->drm_dev, expr);
|
- DRM_DEBUG_ATOMIC(expr);
+ drm_dbg_atomic(aux->drm_dev, expr);
|
- DRM_DEBUG_KMS_RATELIMITED(expr);
+ drm_dbg_kms_ratelimited(aux->drm_dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(aux->drm_dev, expr);
)
Followed by correcting the resulting line-wrapping in the results by hand.
v2:
* Fix indenting in drm_dp_dump_access
Signed-off-by: Lyude Paul
Cc: Robert Foss
Reviewed-by: Robert Foss
---
drivers/gpu/drm/drm_dp_helper.c | 121
1 file changed, 59 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index b50e572b544d..cb56d74e9d38 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -220,11 +220,11 @@ drm_dp_dump_access(const struct drm_dp_aux *aux,
const char *arrow = request == DP_AUX_NATIVE_READ ? "->" : "<-";
if (ret > 0)
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
-aux->name, offset, arrow, ret, min(ret, 20),
buffer);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
+ aux->name, offset, arrow, ret, min(ret, 20), buffer);
else
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d)\n",
-aux->name, offset, arrow, ret);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d)\n",
+ aux->name, offset, arrow, ret);
}
/**
@@ -287,8 +287,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8
request,
err = ret;
}
- DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n",
- aux->name, err);
+ drm_dbg_kms(aux->drm_dev, "%s: Too many retries, giving up. First
error: %d\n",
+ aux->name, err);
ret = err;
unlock:
@@ -524,44 +524,44 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux
*aux,
if (drm_dp_dpcd_read(aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
_test_req, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
return false;
}
auto_test_req &= DP_AUTOMATED_TEST_REQUEST;
if (drm_dp_dpcd_read(aux, DP_TEST_REQUEST, _edid_read, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_TEST_REQUEST);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_TEST_REQUEST);
return false;
}
link_edid_read &= DP_TEST_LINK_EDID_READ;
if (!auto_test_req || !link_edid_read) {
- DRM_DEBUG_KMS("%s: Source DUT does not support
TEST_EDID_READ\n",
-
[PATCH v4 16/17] drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms()
Next step in the conversion, move everything in drm_dp_dual_mode_helper.c
over to using drm_err() and drm_dbg_kms(). This was done using the
following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(dev, expr);
)
And correcting the indentation of the resulting code by hand.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 45 +++
1 file changed, 21 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index dbf9b1fdec63..9faf49354cab 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -27,6 +27,7 @@
#include
#include
+#include
#include
#include
@@ -202,8 +203,8 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_HDMI_ID,
hdmi_id, sizeof(hdmi_id));
- DRM_DEBUG_KMS("DP dual mode HDMI ID: %*pE (err %zd)\n",
- ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
+ drm_dbg_kms(dev, "DP dual mode HDMI ID: %*pE (err %zd)\n",
+ ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
if (ret)
return DRM_DP_DUAL_MODE_UNKNOWN;
@@ -221,8 +222,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_ADAPTOR_ID,
_id, sizeof(adaptor_id));
- DRM_DEBUG_KMS("DP dual mode adaptor ID: %02x (err %zd)\n",
- adaptor_id, ret);
+ drm_dbg_kms(dev, "DP dual mode adaptor ID: %02x (err %zd)\n",
adaptor_id, ret);
if (ret == 0) {
if (is_lspcon_adaptor(hdmi_id, adaptor_id))
return DRM_DP_DUAL_MODE_LSPCON;
@@ -238,8 +238,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
* that we may have misdetected the type.
*/
if (!is_type1_adaptor(adaptor_id) && adaptor_id != hdmi_id[0])
- DRM_ERROR("Unexpected DP dual mode adaptor ID %02x\n",
- adaptor_id);
+ drm_err(dev, "Unexpected DP dual mode adaptor ID
%02x\n", adaptor_id);
}
@@ -286,7 +285,7 @@ int drm_dp_dual_mode_max_tmds_clock(const struct drm_device
*dev, enum drm_dp_du
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_MAX_TMDS_CLOCK,
_tmds_clock, sizeof(max_tmds_clock));
if (ret || max_tmds_clock == 0x00 || max_tmds_clock == 0xff) {
- DRM_DEBUG_KMS("Failed to query max TMDS clock\n");
+ drm_dbg_kms(dev, "Failed to query max TMDS clock\n");
return 165000;
}
@@ -326,7 +325,7 @@ int drm_dp_dual_mode_get_tmds_output(const struct
drm_device *dev,
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to query state of TMDS output buffers\n");
+ drm_dbg_kms(dev, "Failed to query state of TMDS output
buffers\n");
return ret;
}
@@ -372,18 +371,17 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
ret = drm_dp_dual_mode_write(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to %s TMDS output buffers (%d
attempts)\n",
- enable ? "enable" : "disable",
- retry + 1);
+ drm_dbg_kms(dev, "Failed to %s TMDS output buffers (%d
attempts)\n",
+ enable ? "enable" : "disable", retry + 1);
return ret;
}
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
, sizeof(tmp));
if (ret) {
- DRM_DEBUG_KMS("I2C read failed during TMDS output
buffer %s (%d attempts)\n",
- enable ? "enabling" : "disabling",
- retry + 1);
+ drm_dbg_kms(dev,
+ "I2C read failed during TMDS output buffer
%s (%d attempts)\n",
+ enable ? "enabling"
[PATCH v4 10/17] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock()
Another function we need to pass drm_device down to in order to start using
drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index a63d7de85309..4a26b3e1f78f 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -252,6 +252,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
/**
* drm_dp_dual_mode_max_tmds_clock - Max TMDS clock for DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
*
@@ -265,7 +266,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
* Returns:
* Maximum supported TMDS clock rate for the DP dual mode adaptor in kHz.
*/
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter)
{
uint8_t max_tmds_clock;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index fc3e7a9396b5..46de56af33db 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2256,7 +2256,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
hdmi->dp_dual_mode.type = type;
hdmi->dp_dual_mode.max_tmds_clock =
- drm_dp_dual_mode_max_tmds_clock(type, adapter);
+ drm_dp_dual_mode_max_tmds_clock(_priv->drm, type, adapter);
drm_dbg_kms(_priv->drm,
"DP dual mode adaptor (%s) detected (max TMDS clock: %d
kHz)\n",
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 8cb0dcd98a99..aabf9c951380 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -106,7 +106,7 @@ enum drm_dp_dual_mode_type {
enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
--
2.30.2
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[PATCH v4 11/17] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output()
Another function to pass drm_device * down to so we can start using the
drm_dbg_*() in the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 4a26b3e1f78f..c9c2952bcad2 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -296,6 +296,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
/**
* drm_dp_dual_mode_get_tmds_output - Get the state of the TMDS output buffers
in the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enabled: current state of the TMDS output buffers
@@ -310,8 +311,8 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
-struct i2c_adapter *adapter,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev,
+enum drm_dp_dual_mode_type type, struct
i2c_adapter *adapter,
bool *enabled)
{
uint8_t tmds_oen;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index aabf9c951380..01eec9ff5962 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -108,7 +108,7 @@ enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
--
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[PATCH v4 12/17] drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode()
So that we can start using drm_dbg_*() throughout the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 8 +---
drivers/gpu/drm/i915/display/intel_lspcon.c | 12 +++-
include/drm/drm_dp_dual_mode_helper.h | 4 ++--
3 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index c9c2952bcad2..dbf9b1fdec63 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -430,6 +430,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
/**
* drm_lspcon_get_mode: Get LSPCON's current mode of operation by
* reading offset (0x80, 0x41)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: current lspcon mode of operation output variable
*
@@ -437,7 +438,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
* 0 on success, sets the current_mode value to appropriate mode
* -error on failure
*/
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *mode)
{
u8 data;
@@ -477,13 +478,14 @@ EXPORT_SYMBOL(drm_lspcon_get_mode);
/**
* drm_lspcon_set_mode: Change LSPCON's mode of operation by
* writing offset (0x80, 0x40)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: required mode of operation
*
* Returns:
* 0 on success, -error on failure/timeout
*/
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode mode)
{
u8 data = 0;
@@ -508,7 +510,7 @@ int drm_lspcon_set_mode(struct i2c_adapter *adapter,
* so wait and retry until time out or done.
*/
do {
- ret = drm_lspcon_get_mode(adapter, _mode);
+ ret = drm_lspcon_get_mode(dev, adapter, _mode);
if (ret) {
DRM_ERROR("can't confirm LSPCON mode change\n");
return ret;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index ca25044e7d1b..ec0048024746 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -139,10 +139,11 @@ void lspcon_detect_hdr_capability(struct intel_lspcon
*lspcon)
static enum drm_lspcon_mode lspcon_get_current_mode(struct intel_lspcon
*lspcon)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- if (drm_lspcon_get_mode(adapter, _mode)) {
+ if (drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter, _mode))
{
DRM_DEBUG_KMS("Error reading LSPCON mode\n");
return DRM_LSPCON_MODE_INVALID;
}
@@ -175,11 +176,12 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct
intel_lspcon *lspcon,
static int lspcon_change_mode(struct intel_lspcon *lspcon,
enum drm_lspcon_mode mode)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
int err;
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- err = drm_lspcon_get_mode(adapter, _mode);
+ err = drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter,
_mode);
if (err) {
DRM_ERROR("Error reading LSPCON mode\n");
return err;
@@ -190,7 +192,7 @@ static int lspcon_change_mode(struct intel_lspcon *lspcon,
return 0;
}
- err = drm_lspcon_set_mode(adapter, mode);
+ err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, adapter, mode);
if (err < 0) {
DRM_ERROR("LSPCON mode change failed\n");
return err;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 01eec9ff5962..7ee482265087 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -114,8 +114,8 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *current_mode);
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
[PATCH v4 08/17] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect()
Since we're about to be using drm_dbg_*() throughout the DP helpers, we'll
need to be able to access the DRM device in the dual mode DP helpers as
well. Note however that since drm_dp_dual_mode_detect() can be called with
DDC adapters that aren't part of a drm_dp_aux struct, we need to pass down
the drm_device to these functions instead of using drm_dp_aux.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 4 +++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
drivers/gpu/drm/i915/display/intel_lspcon.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 4 +++-
4 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 1c9ea9f7fdaf..9ee75c568c37 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -165,6 +165,7 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
/**
* drm_dp_dual_mode_detect - Identify the DP dual mode adaptor
+ * @dev: _device to use
* @adapter: I2C adapter for the DDC bus
*
* Attempt to identify the type of the DP dual mode adaptor used.
@@ -178,7 +179,8 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
* Returns:
* The type of the DP dual mode adaptor used
*/
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter *adapter)
+enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const struct drm_device
*dev,
+ struct i2c_adapter *adapter)
{
char hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN] = {};
uint8_t adaptor_id = 0x00;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 47a8f0a1c5e2..08fb98dac169 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2224,7 +2224,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
enum port port = hdmi_to_dig_port(hdmi)->base.port;
struct i2c_adapter *adapter =
intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
- enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter);
+ enum drm_dp_dual_mode_type type =
drm_dp_dual_mode_detect(_priv->drm, adapter);
/*
* Type 1 DVI adaptors are not required to implement any
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index e4ff533e3a69..ca25044e7d1b 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -221,7 +221,8 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
{
int retry;
enum drm_dp_dual_mode_type adaptor_type;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+ struct i2c_adapter *adapter = _dp->aux.ddc;
enum drm_lspcon_mode expected_mode;
expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
@@ -232,7 +233,7 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
if (retry)
usleep_range(500, 1000);
- adaptor_type = drm_dp_dual_mode_detect(adapter);
+ adaptor_type = drm_dp_dual_mode_detect(intel_dp->aux.drm_dev,
adapter);
if (adaptor_type == DRM_DP_DUAL_MODE_LSPCON)
break;
}
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 4c42db81fcb4..23ce849152f3 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -62,6 +62,7 @@
#define DP_DUAL_MODE_LSPCON_CURRENT_MODE 0x41
#define DP_DUAL_MODE_LSPCON_MODE_PCON 0x1
+struct drm_device;
struct i2c_adapter;
ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter,
@@ -103,7 +104,8 @@ enum drm_dp_dual_mode_type {
DRM_DP_DUAL_MODE_LSPCON,
};
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter
*adapter);
+enum drm_dp_dual_mode_type
+drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
--
2.30.2
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[PATCH v4 09/17] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output()
Another function that we'll need to pass a drm_device (and not drm_dp_aux)
down to so that we can move over to using drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 9ee75c568c37..a63d7de85309 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -336,6 +336,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
/**
* drm_dp_dual_mode_set_tmds_output - Enable/disable TMDS output buffers in
the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enable: enable (as opposed to disable) the TMDS output buffers
@@ -349,7 +350,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable)
{
uint8_t tmds_oen = enable ? 0 : DP_DUAL_MODE_TMDS_DISABLE;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 08fb98dac169..fc3e7a9396b5 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1251,8 +1251,7 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi
*hdmi, bool enable)
drm_dbg_kms(_priv->drm, "%s DP dual mode adaptor TMDS output\n",
enable ? "Enabling" : "Disabling");
- drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type,
-adapter, enable);
+ drm_dp_dual_mode_set_tmds_output(_priv->drm,
hdmi->dp_dual_mode.type, adapter, enable);
}
static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 23ce849152f3..8cb0dcd98a99 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -110,7 +110,7 @@ int drm_dp_dual_mode_max_tmds_clock(enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
--
2.30.2
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[PATCH v4 06/17] drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay()
So that we can start using drm_dbg_*() for
drm_dp_link_train_channel_eq_delay() and
drm_dp_lttpr_link_train_channel_eq_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c| 14 +-
.../gpu/drm/i915/display/intel_dp_link_training.c | 4 ++--
drivers/gpu/drm/msm/dp/dp_ctrl.c | 4 ++--
drivers/gpu/drm/msm/edp/edp_ctrl.c | 4 ++--
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h| 6 --
8 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 92d76f4cfdfc..f327becb022f 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -677,7 +677,7 @@ amdgpu_atombios_dp_link_train_ce(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
channel_eq = false;
while (1) {
- drm_dp_link_train_channel_eq_delay(dp_info->dpcd);
+ drm_dp_link_train_channel_eq_delay(dp_info->aux, dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index f71b035a48b4..a2047dae3ab7 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -151,7 +151,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
}
EXPORT_SYMBOL(drm_dp_link_train_clock_recovery_delay);
-static void __drm_dp_link_train_channel_eq_delay(unsigned long rd_interval)
+static void __drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+unsigned long rd_interval)
{
if (rd_interval > 4)
DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
@@ -165,9 +166,11 @@ static void __drm_dp_link_train_channel_eq_delay(unsigned
long rd_interval)
usleep_range(rd_interval, rd_interval * 2);
}
-void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
- __drm_dp_link_train_channel_eq_delay(dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
+ __drm_dp_link_train_channel_eq_delay(aux,
+dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK);
}
EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay);
@@ -183,13 +186,14 @@ static u8 dp_lttpr_phy_cap(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE], int r)
return phy_cap[r - DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1];
}
-void drm_dp_lttpr_link_train_channel_eq_delay(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
+void drm_dp_lttpr_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
{
u8 interval = dp_lttpr_phy_cap(phy_cap,
DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1) &
DP_TRAINING_AUX_RD_MASK;
- __drm_dp_link_train_channel_eq_delay(interval);
+ __drm_dp_link_train_channel_eq_delay(aux, interval);
}
EXPORT_SYMBOL(drm_dp_lttpr_link_train_channel_eq_delay);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 198ddb3c173a..6bf6f1ec13ed 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -665,11 +665,11 @@ intel_dp_link_training_channel_equalization_delay(struct
intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX) {
- drm_dp_link_train_channel_eq_delay(intel_dp->dpcd);
+ drm_dp_link_train_channel_eq_delay(_dp->aux,
intel_dp->dpcd);
} else {
const u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
- drm_dp_lttpr_link_train_channel_eq_delay(phy_caps);
+ drm_dp_lttpr_link_train_channel_eq_delay(_dp->aux,
phy_caps);
}
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 264a9eae87d3..2cebd17a7289 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1184,7 +1184,7 @@ static int dp_ctrl_link_lane_down_shift(struct
dp_ctrl_private *ctrl)
static void dp_ctrl_clear_training_pattern(struct dp_ctrl_private *ctrl)
{
d
[PATCH v4 07/17] drm/dp: Always print aux channel name in logs
Since we're about to convert everything in drm_dp_helper.c over to using
drm_dbg_*(), let's also make our logging more consistent in drm_dp_helper.c
while we're at it to ensure that we always print the name of the AUX
channel in question.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_helper.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index a2047dae3ab7..b50e572b544d 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -2781,7 +2781,7 @@ int drm_dp_pcon_frl_enable(struct drm_dp_aux *aux)
if (ret < 0)
return ret;
if (!(buf & DP_PCON_ENABLE_SOURCE_CTL_MODE)) {
- DRM_DEBUG_KMS("PCON in Autonomous mode, can't enable FRL\n");
+ DRM_DEBUG_KMS("%s: PCON in Autonomous mode, can't enable
FRL\n", aux->name);
return -EINVAL;
}
buf |= DP_PCON_ENABLE_HDMI_LINK;
@@ -2876,7 +2876,8 @@ void drm_dp_pcon_hdmi_frl_link_error_count(struct
drm_dp_aux *aux,
num_error = 0;
}
- DRM_ERROR("More than %d errors since the last read for lane
%d", num_error, i);
+ DRM_ERROR("%s: More than %d errors since the last read for lane
%d",
+ aux->name, num_error, i);
}
}
EXPORT_SYMBOL(drm_dp_pcon_hdmi_frl_link_error_count);
--
2.30.2
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[PATCH v4 05/17] drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay()
So that we can start using drm_dbg_*() in
drm_dp_link_train_clock_recovery_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
Reviewed-by: Rodrigo Vivi
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_dp_link_training.c | 2 +-
drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 +-
drivers/gpu/drm/msm/edp/edp_ctrl.c| 2 +-
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h | 4 +++-
8 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 062625a8a4ec..92d76f4cfdfc 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -612,7 +612,7 @@ amdgpu_atombios_dp_link_train_cr(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 9f66153a3c55..f71b035a48b4 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -132,7 +132,8 @@ u8 drm_dp_get_adjust_request_post_cursor(const u8
link_status[DP_LINK_STATUS_SIZ
}
EXPORT_SYMBOL(drm_dp_get_adjust_request_post_cursor);
-void drm_dp_link_train_clock_recovery_delay(const u8
dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_clock_recovery_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
unsigned long rd_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 591ddc4b876c..198ddb3c173a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -513,7 +513,7 @@ static void
intel_dp_link_training_clock_recovery_delay(struct intel_dp *intel_d
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX)
- drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd);
+ drm_dp_link_train_clock_recovery_delay(_dp->aux,
intel_dp->dpcd);
else
drm_dp_lttpr_link_train_clock_recovery_delay();
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 1390f3547fde..264a9eae87d3 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1103,7 +1103,7 @@ static int dp_ctrl_link_train_1(struct dp_ctrl_private
*ctrl,
tries = 0;
old_v_level = ctrl->link->phy_params.v_level;
for (tries = 0; tries < maximum_retries; tries++) {
- drm_dp_link_train_clock_recovery_delay(ctrl->panel->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->aux,
ctrl->panel->dpcd);
ret = dp_ctrl_read_link_status(ctrl, link_status);
if (ret)
diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c
b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 57af3d8b6699..6501598448b4 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -608,7 +608,7 @@ static int edp_start_link_train_1(struct edp_ctrl *ctrl)
tries = 0;
old_v_level = ctrl->v_level;
while (1) {
- drm_dp_link_train_clock_recovery_delay(ctrl->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->drm_aux,
ctrl->dpcd);
rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status);
if (rlen < DP_LINK_STATUS_SIZE) {
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c
b/drivers/gpu/drm/radeon/atombios_dp.c
index c50c504bad50..299b9d8da376 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -680,7 +680,7 @@ static int radeon_dp_link_train_cr(struct
radeon_dp_link_train_info *dp_info)
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_st
[PATCH v4 03/17] drm/dp: Add backpointer to drm_device in drm_dp_aux
This is something that we've wanted for a while now: the ability to
actually look up the respective drm_device for a given drm_dp_aux struct.
This will also allow us to transition over to using the drm_dbg_*() helpers
for debug message printing, as we'll finally have a drm_device to reference
for doing so.
Note that there is one limitation with this - because some DP AUX adapters
exist as platform devices which are initialized independently of their
respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be
non-NULL until drm_dp_aux_register() has been called. We make sure to point
this out in the documentation for struct drm_dp_aux.
v3:
* Add WARN_ON_ONCE() to drm_dp_aux_register() if drm_dev isn't filled out
Signed-off-by: Lyude Paul
Acked-by: Thierry Reding
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 ++
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1 +
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 1 +
drivers/gpu/drm/bridge/tc358767.c| 1 +
drivers/gpu/drm/bridge/ti-sn65dsi86.c| 1 +
drivers/gpu/drm/drm_dp_aux_dev.c | 6 ++
drivers/gpu/drm/drm_dp_helper.c | 2 ++
drivers/gpu/drm/drm_dp_mst_topology.c| 1 +
drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 +
drivers/gpu/drm/msm/edp/edp.h| 3 +--
drivers/gpu/drm/msm/edp/edp_aux.c| 5 +++--
drivers/gpu/drm/msm/edp/edp_ctrl.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
drivers/gpu/drm/radeon/atombios_dp.c | 1 +
drivers/gpu/drm/tegra/dpaux.c| 1 +
drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 +
include/drm/drm_dp_helper.h | 9 -
20 files changed, 36 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index a3ba9ca11e98..062625a8a4ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -188,6 +188,8 @@ void amdgpu_atombios_dp_aux_init(struct amdgpu_connector
*amdgpu_connector)
{
amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
amdgpu_connector->ddc_bus->aux.transfer =
amdgpu_atombios_dp_aux_transfer;
+ amdgpu_connector->ddc_bus->aux.drm_dev = amdgpu_connector->base.dev;
+
drm_dp_aux_init(_connector->ddc_bus->aux);
amdgpu_connector->ddc_bus->has_aux = true;
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 73cdb9fe981a..997567f6f0ba 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -433,6 +433,7 @@ void amdgpu_dm_initialize_dp_connector(struct
amdgpu_display_manager *dm,
kasprintf(GFP_KERNEL, "AMDGPU DM aux hw bus %d",
link_index);
aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
+ aconnector->dm_dp_aux.aux.drm_dev = dm->ddev;
aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
drm_dp_aux_init(>dm_dp_aux.aux);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
index aa6cda458eb9..e33cd077595a 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@@ -537,6 +537,7 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge,
/* Register aux channel */
anx6345->aux.name = "DP-AUX";
anx6345->aux.dev = >client->dev;
+ anx6345->aux.drm_dev = bridge->dev;
anx6345->aux.transfer = anx6345_aux_transfer;
err = drm_dp_aux_register(>aux);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index f20558618220..5e6a0ed39199 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -905,6 +905,7 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge,
/* Register aux channel */
anx78xx->aux.name = "DP-AUX";
anx78xx->aux.dev = >client->dev;
+ anx78xx->aux.drm_dev = bridge->dev;
anx78xx->aux.transfer = anx78xx_aux_transfer;
err = drm_dp_aux_register(>aux);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
b/drivers/gpu/drm
[PATCH v4 04/17] drm/dp: Clarify DP AUX registration time
The docs we had for drm_dp_aux_init() and drm_dp_aux_register() were mostly
correct, except for the fact that they made the assumption that all AUX
devices were grandchildren of their respective DRM devices. This is the
case for most normal GPUs, but is almost never the case with SoCs and
display bridges. So, let's fix this documentation to clarify when the right
time to use drm_dp_aux_init() or drm_dp_aux_register() is.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_helper.c | 45 +++--
1 file changed, 32 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index ad73d7264743..9f66153a3c55 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1728,10 +1728,18 @@ EXPORT_SYMBOL(drm_dp_remote_aux_init);
* drm_dp_aux_init() - minimally initialise an aux channel
* @aux: DisplayPort AUX channel
*
- * If you need to use the drm_dp_aux's i2c adapter prior to registering it
- * with the outside world, call drm_dp_aux_init() first. You must still
- * call drm_dp_aux_register() once the connector has been registered to
- * allow userspace access to the auxiliary DP channel.
+ * If you need to use the drm_dp_aux's i2c adapter prior to registering it with
+ * the outside world, call drm_dp_aux_init() first. For drivers which are
+ * grandparents to their AUX adapters (e.g. the AUX adapter is parented by a
+ * _connector), you must still call drm_dp_aux_register() once the
connector
+ * has been registered to allow userspace access to the auxiliary DP channel.
+ * Likewise, for such drivers you should also assign _dp_aux.drm_dev as
+ * early as possible so that the _device that corresponds to the AUX
adapter
+ * may be mentioned in debugging output from the DRM DP helpers.
+ *
+ * For devices which use a separate platform device for their AUX adapters,
this
+ * may be called as early as required by the driver.
+ *
*/
void drm_dp_aux_init(struct drm_dp_aux *aux)
{
@@ -1751,15 +1759,26 @@ EXPORT_SYMBOL(drm_dp_aux_init);
* drm_dp_aux_register() - initialise and register aux channel
* @aux: DisplayPort AUX channel
*
- * Automatically calls drm_dp_aux_init() if this hasn't been done yet.
- * This should only be called when the underlying drm_connector is
- * initialiazed already. Therefore the best place to call this is from
- * _connector_funcs.late_register. Not that drivers which don't follow this
- * will Oops when CONFIG_DRM_DP_AUX_CHARDEV is enabled.
- *
- * Drivers which need to use the aux channel before that point (e.g. at driver
- * load time, before drm_dev_register() has been called) need to call
- * drm_dp_aux_init().
+ * Automatically calls drm_dp_aux_init() if this hasn't been done yet. This
+ * should only be called once the parent of @aux, _dp_aux.dev, is
+ * initialized. For devices which are grandparents of their AUX channels,
+ * _dp_aux.dev will typically be the _connector which
+ * corresponds to @aux. For these devices, it's advised to call
+ * drm_dp_aux_register() in _connector_funcs.late_register, and likewise to
+ * call drm_dp_aux_unregister() in _connector_funcs.early_unregister.
+ * Functions which don't follow this will likely Oops when
+ * %CONFIG_DRM_DP_AUX_CHARDEV is enabled.
+ *
+ * For devices where the AUX channel is a device that exists independently of
+ * the _device that uses it, such as SoCs and bridge devices, it is
+ * recommended to call drm_dp_aux_register() after a _device has been
+ * assigned to _dp_aux.drm_dev, and likewise to call
+ * drm_dp_aux_unregister() once the _device should no longer be associated
+ * with the AUX channel (e.g. on bridge detach).
+ *
+ * Drivers which need to use the aux channel before either of the two points
+ * mentioned above need to call drm_dp_aux_init() in order to use the AUX
+ * channel before registration.
*
* Returns 0 on success or a negative error code on failure.
*/
--
2.30.2
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[PATCH v4 01/17] drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace
Just adds some missing calls to
drm_dp_aux_register()/drm_dp_aux_unregister() for when we attach/detach the
bridge.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 01e95466502a..49e4c340f1de 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1719,10 +1719,14 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
dev_dbg(mhdp->dev, "%s\n", __func__);
+ ret = drm_dp_aux_register(>aux);
+ if (ret < 0)
+ return ret;
+
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
ret = cdns_mhdp_connector_init(mhdp);
if (ret)
- return ret;
+ goto aux_unregister;
}
spin_lock(>start_lock);
@@ -1738,6 +1742,9 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
mhdp->regs + CDNS_APB_INT_MASK);
return 0;
+aux_unregister:
+ drm_dp_aux_unregister(>aux);
+ return ret;
}
static void cdns_mhdp_configure_video(struct cdns_mhdp_device *mhdp,
@@ -2082,6 +2089,8 @@ static void cdns_mhdp_detach(struct drm_bridge *bridge)
dev_dbg(mhdp->dev, "%s\n", __func__);
+ drm_dp_aux_unregister(>aux);
+
spin_lock(>start_lock);
mhdp->bridge_attached = false;
--
2.30.2
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[PATCH v4 02/17] drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister
Since AUX adapters on nouveau have their respective DRM connectors as
parents, we need to make sure that we register then after their connectors.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 25 -
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 61e6d7412505..c04044be3d32 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -401,7 +401,6 @@ nouveau_connector_destroy(struct drm_connector *connector)
drm_connector_cleanup(connector);
if (nv_connector->aux.transfer) {
drm_dp_cec_unregister_connector(_connector->aux);
- drm_dp_aux_unregister(_connector->aux);
kfree(nv_connector->aux.name);
}
kfree(connector);
@@ -905,13 +904,29 @@ nouveau_connector_late_register(struct drm_connector
*connector)
int ret;
ret = nouveau_backlight_init(connector);
+ if (ret)
+ return ret;
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ ret = drm_dp_aux_register(_connector(connector)->aux);
+ if (ret)
+ goto backlight_fini;
+ }
+
+ return 0;
+backlight_fini:
+ nouveau_backlight_fini(connector);
return ret;
}
static void
nouveau_connector_early_unregister(struct drm_connector *connector)
{
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
+ drm_dp_aux_unregister(_connector(connector)->aux);
+
nouveau_backlight_fini(connector);
}
@@ -1343,14 +1358,14 @@ nouveau_connector_create(struct drm_device *dev,
snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
dcbe->hasht, dcbe->hashm);
nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
- ret = drm_dp_aux_register(_connector->aux);
+ drm_dp_aux_init(_connector->aux);
if (ret) {
- NV_ERROR(drm, "failed to register aux channel\n");
+ NV_ERROR(drm, "Failed to init AUX adapter for
sor-%04x-%04x: %d\n",
+dcbe->hasht, dcbe->hashm, ret);
kfree(nv_connector);
return ERR_PTR(ret);
}
- funcs = _connector_funcs;
- break;
+ fallthrough;
default:
funcs = _connector_funcs;
break;
--
2.30.2
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[PATCH v4 00/17] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers
Since it's been asked quite a few times on some of the various DP related patch series I've submitted to use the new DRM printk helpers, and it technically wasn't really trivial to do this before due to the lack of a consistent way to find a drm_device for an AUX channel, this patch series aims to address this. In this series we: * (NEW! starting from V3) Make sure drm_dbg_*() and friends can handle NULL drm device pointers * Clean-up potentially erroneous usages of drm_dp_aux_init() and drm_dp_aux_register() so that actual AUX registration doesn't happen until we have an associated DRM device * Clean-up any obvious errors in drivers we find along the way * Add a backpointer to the respective drm_device for an AUX channel in drm_dp_aux.drm_dev, and hook it up in every driver with an AUX channel across the tree * Add a new ratelimited print helper we'll need for converting the DP helpers over to using the new DRM printk helpers * Fix any inconsistencies with logging in drm_dp_helper.c so we always have the aux channel name printed * Prepare the various DP helpers so they can find the correct drm_device to use for logging * And finally, convert all of the DP helpers over to using drm_dbg_*() and drm_err(). Major changes in v4: * Don't move i2c aux init into drm_dp_aux_init(), since I think I've found a much better solution to tegra's issues: https://patchwork.freedesktop.org/series/89420/ Lyude Paul (17): drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister drm/dp: Add backpointer to drm_device in drm_dp_aux drm/dp: Clarify DP AUX registration time drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay() drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay() drm/dp: Always print aux channel name in logs drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output() drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode() drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw() drm/print: Handle potentially NULL drm_devices in drm_dbg_* drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*() drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms() drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*() drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 6 +- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 + .../drm/bridge/analogix/analogix-anx6345.c| 1 + .../drm/bridge/analogix/analogix-anx78xx.c| 1 + .../drm/bridge/analogix/analogix_dp_core.c| 1 + .../drm/bridge/cadence/cdns-mhdp8546-core.c | 12 +- drivers/gpu/drm/bridge/tc358767.c | 1 + drivers/gpu/drm/bridge/ti-sn65dsi86.c | 1 + drivers/gpu/drm/drm_dp_aux_dev.c | 6 + drivers/gpu/drm/drm_dp_dual_mode_helper.c | 68 ++-- drivers/gpu/drm/drm_dp_helper.c | 184 + drivers/gpu/drm/drm_dp_mst_topology.c | 376 +- drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 + .../drm/i915/display/intel_dp_link_training.c | 6 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +- drivers/gpu/drm/i915/display/intel_hdmi.c | 7 +- drivers/gpu/drm/i915/display/intel_lspcon.c | 17 +- drivers/gpu/drm/msm/dp/dp_ctrl.c | 6 +- drivers/gpu/drm/msm/edp/edp.h | 3 +- drivers/gpu/drm/msm/edp/edp_aux.c | 5 +- drivers/gpu/drm/msm/edp/edp_ctrl.c| 8 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 26 +- drivers/gpu/drm/radeon/atombios_dp.c | 5 +- drivers/gpu/drm/tegra/dpaux.c | 1 + drivers/gpu/drm/xlnx/zynqmp_dp.c | 5 +- include/drm/drm_dp_dual_mode_helper.h | 14 +- include/drm/drm_dp_helper.h | 19 +- include/drm/drm_dp_mst_helper.h | 3 +- include/drm/drm_print.h | 20 +- 29 files changed, 453 insertions(+), 354 deletions(-) -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH 2/2] drm/tegra: Fix DP AUX channel reference leaks
Noticed while fixing the regression I introduced in Tegra that Tegra seems
to actually never release the device or module references it's grabbing for
the DP AUX channel. So, let's fix that by dropping them when appropriate.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/tegra/sor.c | 19 +++
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 4e0e3a63e586..474586e18d06 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -3772,12 +3772,13 @@ static int tegra_sor_probe(struct platform_device *pdev)
err = tegra_sor_parse_dt(sor);
if (err < 0)
- return err;
+ goto put_aux;
err = tegra_output_probe(>output);
- if (err < 0)
- return dev_err_probe(>dev, err,
-"failed to probe output\n");
+ if (err < 0) {
+ err = dev_err_probe(>dev, err, "failed to probe
output\n");
+ goto put_aux;
+ }
if (sor->ops && sor->ops->probe) {
err = sor->ops->probe(sor);
@@ -3966,6 +3967,11 @@ static int tegra_sor_probe(struct platform_device *pdev)
pm_runtime_disable(>dev);
remove:
tegra_output_remove(>output);
+put_aux:
+ if (sor->aux && sor->output.ddc) {
+ module_put(sor->aux->dev->driver->owner);
+ put_device(sor->aux->dev);
+ }
return err;
}
@@ -3985,6 +3991,11 @@ static int tegra_sor_remove(struct platform_device *pdev)
tegra_output_remove(>output);
+ if (sor->aux && sor->output.ddc) {
+ module_put(sor->aux->dev->driver->owner);
+ put_device(sor->aux->dev);
+ }
+
return 0;
}
--
2.30.2
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[PATCH 0/2] drm/tegra: Fix device/module refs for DP
This patch series fixes a regression that was introduced by one of the changes I made to when Tegra registers its AUX adapters, along with fixing some reference leaks that I found along the way. !!!NOTE!!! There's one thing I'm not entirely sure about, which is the use of module references (e.g. try_module_get()) here. If I'm understanding how this code worked previously: since the get_device call in tegra_sor_probe() was previously the i2c adapter for the AUX channel - which itself is initialized in drm_dp_aux_register() - then I -think- that the module owner for the DDC adapter would likely have been drm_kms_helper. With these changes, if I'm understanding things correctly we're now just grabbing a module reference for ourselves - something which might not be the best idea? If anyone could confirm if I need to fix this or not that'd be appreciated, along with reviews of course :P Lyude Paul (2): drm/tegra: Get ref for DP AUX channel, not its ddc adapter drm/tegra: Fix DP AUX channel reference leaks drivers/gpu/drm/tegra/sor.c | 25 ++--- 1 file changed, 18 insertions(+), 7 deletions(-) -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH 1/2] drm/tegra: Get ref for DP AUX channel, not its ddc adapter
While we're taking a reference of the DDC adapter for a DP AUX channel in
tegra_sor_probe() because we're going to be using that adapter with the
SOR, now that we've moved where AUX registration happens the actual device
structure for the DDC adapter isn't initialized yet. Which means that we
can't really take a reference from it to try to keep it around anymore.
This should be fine though, because we can just take a reference of its
parent instead.
Signed-off-by: Lyude Paul
Fixes: 39c17ae60ea9 ("drm/tegra: Don't register DP AUX channels before
connectors")
Cc: Lyude Paul
Cc: Thierry Reding
Cc: Jonathan Hunter
Cc: dri-devel@lists.freedesktop.org
Cc: linux-te...@vger.kernel.org
---
drivers/gpu/drm/tegra/sor.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 7b88261f57bb..4e0e3a63e586 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -3739,11 +3739,11 @@ static int tegra_sor_probe(struct platform_device *pdev)
if (!sor->aux)
return -EPROBE_DEFER;
- if (get_device(>aux->ddc.dev)) {
- if (try_module_get(sor->aux->ddc.owner))
+ if (get_device(sor->aux->dev)) {
+ if (try_module_get(sor->aux->dev->driver->owner))
sor->output.ddc = >aux->ddc;
else
- put_device(>aux->ddc.dev);
+ put_device(sor->aux->dev);
}
}
--
2.30.2
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Re: [PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini
On Fri, 2021-04-23 at 14:39 +0200, Thierry Reding wrote: > > I'm curious: how is a DP AUX adapter reference count going to solve the > issue of potentially registering devices too early (i.e. before the DRM > is registered)? > > Is it because registering too early could cause a reference count > problem if somebody get a hold of the DP AUX adapter before the parent > DRM device is around? Well currently the problem is that we kind of want to avoid setting up the i2c adapter before the DRM driver is registered with userspace, but it's not really possible to do that if we need the core device struct for the ddc adapter initialized so that tegra can call get_device() on it in drivers/gpu/drm/tegra/sor.c. So my thought is instead of calling get_device() on the ddc adapter that the AUX channel provides, why not just call it on the actual platform device that implements the AUX channel instead? I think this should work pretty nicely while still preventing the platform device for the AUX channel from disappearing before the SOR has disappeared. > > Thierry -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini
On Thu, 2021-04-22 at 18:33 -0400, Lyude Paul wrote: > OK - talked with Ville a bit on this and did some of my own research, I > actually think that moving i2c to drm_dp_aux_init() is the right decision > for > the time being. The reasoning behind this being that as shown by my previous > work of fixing drivers that call drm_dp_aux_register() too early - it seems > like there's already been drivers that have been working just fine with > setting up the i2c device before DRM registration. > > In the future, it'd probably be better if we can split up i2c_add_adapter() > into an init and register function - but we'll have to talk with the i2c > maintainers to see if this is acceptable w/ them Actually - I think adding the ability to refcount dp aux adapters might be a better solution so I'm going to try that! > > On Thu, 2021-04-22 at 13:18 -0400, Lyude Paul wrote: > > On Tue, 2021-04-20 at 02:16 +0300, Ville Syrjälä wrote: > > > > > > The init vs. register split is intentional. Registering the thing > > > and allowing userspace access to it before the rest of the driver > > > is ready isn't particularly great. For a while now we've tried to > > > move towards an architecture where the driver is fully initialzied > > > before anything gets exposed to userspace. > > > > Yeah-thank you for pointing this out. Thierry - do you think there's an > > alternate solution we could go with in Tegra to fix the get_device() issue > > that wouldn't require us trying to expose the i2c adapter early? > > > > > > > > -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini
OK - talked with Ville a bit on this and did some of my own research, I actually think that moving i2c to drm_dp_aux_init() is the right decision for the time being. The reasoning behind this being that as shown by my previous work of fixing drivers that call drm_dp_aux_register() too early - it seems like there's already been drivers that have been working just fine with setting up the i2c device before DRM registration. In the future, it'd probably be better if we can split up i2c_add_adapter() into an init and register function - but we'll have to talk with the i2c maintainers to see if this is acceptable w/ them On Thu, 2021-04-22 at 13:18 -0400, Lyude Paul wrote: > On Tue, 2021-04-20 at 02:16 +0300, Ville Syrjälä wrote: > > > > The init vs. register split is intentional. Registering the thing > > and allowing userspace access to it before the rest of the driver > > is ready isn't particularly great. For a while now we've tried to > > move towards an architecture where the driver is fully initialzied > > before anything gets exposed to userspace. > > Yeah-thank you for pointing this out. Thierry - do you think there's an > alternate solution we could go with in Tegra to fix the get_device() issue > that wouldn't require us trying to expose the i2c adapter early? > > > > -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini
On Tue, 2021-04-20 at 02:16 +0300, Ville Syrjälä wrote: > > The init vs. register split is intentional. Registering the thing > and allowing userspace access to it before the rest of the driver > is ready isn't particularly great. For a while now we've tried to > move towards an architecture where the driver is fully initialzied > before anything gets exposed to userspace. Yeah-thank you for pointing this out. Thierry - do you think there's an alternate solution we could go with in Tegra to fix the get_device() issue that wouldn't require us trying to expose the i2c adapter early? > -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 20/20] drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*()
And finally, convert all of the code in drm_dp_mst_topology.c over to using
drm_err() and drm_dbg*(). Note that this refactor would have been a lot
more complicated to have tried writing a coccinelle script for, so this
whole thing was done by hand.
v2:
* Fix line-wrapping in drm_dp_mst_atomic_check_mstb_bw_limit()
Signed-off-by: Lyude Paul
Cc: Robert Foss
Reviewed-by: Robert Foss
---
drivers/gpu/drm/drm_dp_mst_topology.c | 368 +-
1 file changed, 187 insertions(+), 181 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 9bac5bd050ab..5539a91b4031 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -286,7 +286,8 @@ static void drm_dp_encode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
*len = idx;
}
-static bool drm_dp_decode_sideband_msg_hdr(struct drm_dp_sideband_msg_hdr *hdr,
+static bool drm_dp_decode_sideband_msg_hdr(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_hdr *hdr,
u8 *buf, int buflen, u8 *hdrlen)
{
u8 crc4;
@@ -303,7 +304,7 @@ static bool drm_dp_decode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
crc4 = drm_dp_msg_header_crc4(buf, (len * 2) - 1);
if ((crc4 & 0xf) != (buf[len - 1] & 0xf)) {
- DRM_DEBUG_KMS("crc4 mismatch 0x%x 0x%x\n", crc4, buf[len - 1]);
+ drm_dbg_kms(mgr->dev, "crc4 mismatch 0x%x 0x%x\n", crc4,
buf[len - 1]);
return false;
}
@@ -789,7 +790,8 @@ static bool drm_dp_sideband_append_payload(struct
drm_dp_sideband_msg_rx *msg,
return true;
}
-static bool drm_dp_sideband_parse_link_address(struct drm_dp_sideband_msg_rx
*raw,
+static bool drm_dp_sideband_parse_link_address(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
struct
drm_dp_sideband_msg_reply_body *repmsg)
{
int idx = 1;
@@ -1014,7 +1016,8 @@ drm_dp_sideband_parse_query_stream_enc_status(
return true;
}
-static bool drm_dp_sideband_parse_reply(struct drm_dp_sideband_msg_rx *raw,
+static bool drm_dp_sideband_parse_reply(const struct drm_dp_mst_topology_mgr
*mgr,
+ struct drm_dp_sideband_msg_rx *raw,
struct drm_dp_sideband_msg_reply_body
*msg)
{
memset(msg, 0, sizeof(*msg));
@@ -1030,7 +1033,7 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
switch (msg->req_type) {
case DP_LINK_ADDRESS:
- return drm_dp_sideband_parse_link_address(raw, msg);
+ return drm_dp_sideband_parse_link_address(mgr, raw, msg);
case DP_QUERY_PAYLOAD:
return drm_dp_sideband_parse_query_payload_ack(raw, msg);
case DP_REMOTE_DPCD_READ:
@@ -1053,14 +1056,16 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
case DP_QUERY_STREAM_ENC_STATUS:
return drm_dp_sideband_parse_query_stream_enc_status(raw, msg);
default:
- DRM_ERROR("Got unknown reply 0x%02x (%s)\n", msg->req_type,
- drm_dp_mst_req_type_str(msg->req_type));
+ drm_err(mgr->dev, "Got unknown reply 0x%02x (%s)\n",
+ msg->req_type, drm_dp_mst_req_type_str(msg->req_type));
return false;
}
}
-static bool drm_dp_sideband_parse_connection_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool
+drm_dp_sideband_parse_connection_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
+ struct
drm_dp_sideband_msg_req_body *msg)
{
int idx = 1;
@@ -1082,12 +1087,14 @@ static bool
drm_dp_sideband_parse_connection_status_notify(struct drm_dp_sideban
idx++;
return true;
fail_len:
- DRM_DEBUG_KMS("connection status reply parse length fail %d %d\n", idx,
raw->curlen);
+ drm_dbg_kms(mgr->dev, "connection status reply parse length fail %d
%d\n",
+ idx, raw->curlen);
return false;
}
-static bool drm_dp_sideband_parse_resource_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool drm_dp_sideband_parse_resource_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+st
[PATCH v3 19/20] drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms()
Next step in the conversion, move everything in drm_dp_dual_mode_helper.c
over to using drm_err() and drm_dbg_kms(). This was done using the
following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(dev, expr);
)
And correcting the indentation of the resulting code by hand.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 45 +++
1 file changed, 21 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index dbf9b1fdec63..9faf49354cab 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -27,6 +27,7 @@
#include
#include
+#include
#include
#include
@@ -202,8 +203,8 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_HDMI_ID,
hdmi_id, sizeof(hdmi_id));
- DRM_DEBUG_KMS("DP dual mode HDMI ID: %*pE (err %zd)\n",
- ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
+ drm_dbg_kms(dev, "DP dual mode HDMI ID: %*pE (err %zd)\n",
+ ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
if (ret)
return DRM_DP_DUAL_MODE_UNKNOWN;
@@ -221,8 +222,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_ADAPTOR_ID,
_id, sizeof(adaptor_id));
- DRM_DEBUG_KMS("DP dual mode adaptor ID: %02x (err %zd)\n",
- adaptor_id, ret);
+ drm_dbg_kms(dev, "DP dual mode adaptor ID: %02x (err %zd)\n",
adaptor_id, ret);
if (ret == 0) {
if (is_lspcon_adaptor(hdmi_id, adaptor_id))
return DRM_DP_DUAL_MODE_LSPCON;
@@ -238,8 +238,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
* that we may have misdetected the type.
*/
if (!is_type1_adaptor(adaptor_id) && adaptor_id != hdmi_id[0])
- DRM_ERROR("Unexpected DP dual mode adaptor ID %02x\n",
- adaptor_id);
+ drm_err(dev, "Unexpected DP dual mode adaptor ID
%02x\n", adaptor_id);
}
@@ -286,7 +285,7 @@ int drm_dp_dual_mode_max_tmds_clock(const struct drm_device
*dev, enum drm_dp_du
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_MAX_TMDS_CLOCK,
_tmds_clock, sizeof(max_tmds_clock));
if (ret || max_tmds_clock == 0x00 || max_tmds_clock == 0xff) {
- DRM_DEBUG_KMS("Failed to query max TMDS clock\n");
+ drm_dbg_kms(dev, "Failed to query max TMDS clock\n");
return 165000;
}
@@ -326,7 +325,7 @@ int drm_dp_dual_mode_get_tmds_output(const struct
drm_device *dev,
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to query state of TMDS output buffers\n");
+ drm_dbg_kms(dev, "Failed to query state of TMDS output
buffers\n");
return ret;
}
@@ -372,18 +371,17 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
ret = drm_dp_dual_mode_write(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to %s TMDS output buffers (%d
attempts)\n",
- enable ? "enable" : "disable",
- retry + 1);
+ drm_dbg_kms(dev, "Failed to %s TMDS output buffers (%d
attempts)\n",
+ enable ? "enable" : "disable", retry + 1);
return ret;
}
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
, sizeof(tmp));
if (ret) {
- DRM_DEBUG_KMS("I2C read failed during TMDS output
buffer %s (%d attempts)\n",
- enable ? "enabling" : "disabling",
- retry + 1);
+ drm_dbg_kms(dev,
+ "I2C read failed during TMDS output buffer
%s (%d attempts)\n",
+ enable ? "enabling"
[PATCH v3 16/20] drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw()
Since this is one of the few functions in drm_dp_mst_topology.c that
doesn't have any way of getting access to a drm_device, let's pass the
drm_dp_mst_topology_mgr down to this function so that it can use
drm_dbg_kms().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_mst_topology.c | 7 +--
drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++-
include/drm/drm_dp_mst_helper.h | 3 ++-
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 276f7f054d62..9bac5bd050ab 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -3638,6 +3638,7 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
/**
* drm_dp_get_vc_payload_bw - get the VC payload BW for an MST link
+ * @mgr: The _dp_mst_topology_mgr to use
* @link_rate: link rate in 10kbits/s units
* @link_lane_count: lane count
*
@@ -3646,7 +3647,8 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
* convert the number of PBNs required for a given stream to the number of
* timeslots this stream requires in each MTP.
*/
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count)
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count)
{
if (link_rate == 0 || link_lane_count == 0)
DRM_DEBUG_KMS("invalid link rate/lane count: (%d / %d)\n",
@@ -3711,7 +3713,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct
drm_dp_mst_topology_mgr *mgr, bool ms
goto out_unlock;
}
- mgr->pbn_div =
drm_dp_get_vc_payload_bw(drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
+ mgr->pbn_div = drm_dp_get_vc_payload_bw(mgr,
+
drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
mgr->dpcd[2] &
DP_MAX_LANE_COUNT_MASK);
if (mgr->pbn_div == 0) {
ret = -EINVAL;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 180f97cd74cb..eb04b3cefda2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -70,7 +70,8 @@ static int intel_dp_mst_compute_link_config(struct
intel_encoder *encoder,
slots = drm_dp_atomic_find_vcpi_slots(state, _dp->mst_mgr,
connector->port,
crtc_state->pbn,
-
drm_dp_get_vc_payload_bw(crtc_state->port_clock,
+
drm_dp_get_vc_payload_bw(_dp->mst_mgr,
+
crtc_state->port_clock,
crtc_state->lane_count));
if (slots == -EDEADLK)
return slots;
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index bd1c39907b92..20dc705642bd 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -783,7 +783,8 @@ drm_dp_mst_detect_port(struct drm_connector *connector,
struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct
drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count);
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count);
int drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc);
--
2.30.2
___
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https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 18/20] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*()
Now that we've added a back-pointer to drm_device to drm_dp_aux, made
drm_dp_aux available to any functions in drm_dp_helper.c which need to
print to the kernel log, and ensured all of our logging uses a consistent
format, let's do the final step of the conversion and actually move
everything over to using drm_err() and drm_dbg_*().
This was done by using the following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(aux->drm_dev, expr);
|
- DRM_DEBUG_DP(expr);
+ drm_dbg_dp(aux->drm_dev, expr);
|
- DRM_DEBUG_ATOMIC(expr);
+ drm_dbg_atomic(aux->drm_dev, expr);
|
- DRM_DEBUG_KMS_RATELIMITED(expr);
+ drm_dbg_kms_ratelimited(aux->drm_dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(aux->drm_dev, expr);
)
Followed by correcting the resulting line-wrapping in the results by hand.
v2:
* Fix indenting in drm_dp_dump_access
Signed-off-by: Lyude Paul
Cc: Robert Foss
Reviewed-by: Robert Foss
---
drivers/gpu/drm/drm_dp_helper.c | 121
1 file changed, 59 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 6dc1ccd4880b..75563987ab8c 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -220,11 +220,11 @@ drm_dp_dump_access(const struct drm_dp_aux *aux,
const char *arrow = request == DP_AUX_NATIVE_READ ? "->" : "<-";
if (ret > 0)
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
-aux->name, offset, arrow, ret, min(ret, 20),
buffer);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
+ aux->name, offset, arrow, ret, min(ret, 20), buffer);
else
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d)\n",
-aux->name, offset, arrow, ret);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d)\n",
+ aux->name, offset, arrow, ret);
}
/**
@@ -287,8 +287,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8
request,
err = ret;
}
- DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n",
- aux->name, err);
+ drm_dbg_kms(aux->drm_dev, "%s: Too many retries, giving up. First
error: %d\n",
+ aux->name, err);
ret = err;
unlock:
@@ -524,44 +524,44 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux
*aux,
if (drm_dp_dpcd_read(aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
_test_req, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
return false;
}
auto_test_req &= DP_AUTOMATED_TEST_REQUEST;
if (drm_dp_dpcd_read(aux, DP_TEST_REQUEST, _edid_read, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_TEST_REQUEST);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_TEST_REQUEST);
return false;
}
link_edid_read &= DP_TEST_LINK_EDID_READ;
if (!auto_test_req || !link_edid_read) {
- DRM_DEBUG_KMS("%s: Source DUT does not support
TEST_EDID_READ\n",
-
[PATCH v3 17/20] drm/print: Handle potentially NULL drm_devices in drm_dbg_*
While this shouldn't really be something that happens all that often, since we're going to be using the drm_dbg_* log helpers in DRM helpers it's technically possible that a driver could use an AUX adapter before it's been associated with it's respective drm_device. While drivers should take care to avoid this, there's likely going to be situations where it's difficult to workaround. And since other logging helpers in the kernel tend to be OK with NULL pointers (for instance, passing a NULL pointer to a "%s" argument for a printk-like function in the kernel doesn't break anything), we should do the same for ours. Signed-off-by: Lyude Paul --- include/drm/drm_print.h | 20 ++-- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index a3c58c941bdc..9b66be54dd16 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -443,25 +443,25 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, #define drm_dbg_core(drm, fmt, ...)\ - drm_dev_dbg((drm)->dev, DRM_UT_CORE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_CORE, fmt, ##__VA_ARGS__) #define drm_dbg(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) #define drm_dbg_kms(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_KMS, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_KMS, fmt, ##__VA_ARGS__) #define drm_dbg_prime(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_PRIME, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_PRIME, fmt, ##__VA_ARGS__) #define drm_dbg_atomic(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) #define drm_dbg_vbl(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_VBL, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_VBL, fmt, ##__VA_ARGS__) #define drm_dbg_state(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_STATE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_STATE, fmt, ##__VA_ARGS__) #define drm_dbg_lease(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_LEASE, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_LEASE, fmt, ##__VA_ARGS__) #define drm_dbg_dp(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DP, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DP, fmt, ##__VA_ARGS__) #define drm_dbg_drmres(drm, fmt, ...) \ - drm_dev_dbg((drm)->dev, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) + drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) /* -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 11/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect()
Since we're about to be using drm_dbg_*() throughout the DP helpers, we'll
need to be able to access the DRM device in the dual mode DP helpers as
well. Note however that since drm_dp_dual_mode_detect() can be called with
DDC adapters that aren't part of a drm_dp_aux struct, we need to pass down
the drm_device to these functions instead of using drm_dp_aux.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 4 +++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
drivers/gpu/drm/i915/display/intel_lspcon.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 4 +++-
4 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 1c9ea9f7fdaf..9ee75c568c37 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -165,6 +165,7 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
/**
* drm_dp_dual_mode_detect - Identify the DP dual mode adaptor
+ * @dev: _device to use
* @adapter: I2C adapter for the DDC bus
*
* Attempt to identify the type of the DP dual mode adaptor used.
@@ -178,7 +179,8 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
* Returns:
* The type of the DP dual mode adaptor used
*/
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter *adapter)
+enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const struct drm_device
*dev,
+ struct i2c_adapter *adapter)
{
char hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN] = {};
uint8_t adaptor_id = 0x00;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 47a8f0a1c5e2..08fb98dac169 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2224,7 +2224,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
enum port port = hdmi_to_dig_port(hdmi)->base.port;
struct i2c_adapter *adapter =
intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
- enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter);
+ enum drm_dp_dual_mode_type type =
drm_dp_dual_mode_detect(_priv->drm, adapter);
/*
* Type 1 DVI adaptors are not required to implement any
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index e4ff533e3a69..ca25044e7d1b 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -221,7 +221,8 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
{
int retry;
enum drm_dp_dual_mode_type adaptor_type;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+ struct i2c_adapter *adapter = _dp->aux.ddc;
enum drm_lspcon_mode expected_mode;
expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
@@ -232,7 +233,7 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
if (retry)
usleep_range(500, 1000);
- adaptor_type = drm_dp_dual_mode_detect(adapter);
+ adaptor_type = drm_dp_dual_mode_detect(intel_dp->aux.drm_dev,
adapter);
if (adaptor_type == DRM_DP_DUAL_MODE_LSPCON)
break;
}
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 4c42db81fcb4..23ce849152f3 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -62,6 +62,7 @@
#define DP_DUAL_MODE_LSPCON_CURRENT_MODE 0x41
#define DP_DUAL_MODE_LSPCON_MODE_PCON 0x1
+struct drm_device;
struct i2c_adapter;
ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter,
@@ -103,7 +104,8 @@ enum drm_dp_dual_mode_type {
DRM_DP_DUAL_MODE_LSPCON,
};
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter
*adapter);
+enum drm_dp_dual_mode_type
+drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
--
2.30.2
___
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https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 15/20] drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode()
So that we can start using drm_dbg_*() throughout the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 8 +---
drivers/gpu/drm/i915/display/intel_lspcon.c | 12 +++-
include/drm/drm_dp_dual_mode_helper.h | 4 ++--
3 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index c9c2952bcad2..dbf9b1fdec63 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -430,6 +430,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
/**
* drm_lspcon_get_mode: Get LSPCON's current mode of operation by
* reading offset (0x80, 0x41)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: current lspcon mode of operation output variable
*
@@ -437,7 +438,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
* 0 on success, sets the current_mode value to appropriate mode
* -error on failure
*/
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *mode)
{
u8 data;
@@ -477,13 +478,14 @@ EXPORT_SYMBOL(drm_lspcon_get_mode);
/**
* drm_lspcon_set_mode: Change LSPCON's mode of operation by
* writing offset (0x80, 0x40)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: required mode of operation
*
* Returns:
* 0 on success, -error on failure/timeout
*/
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode mode)
{
u8 data = 0;
@@ -508,7 +510,7 @@ int drm_lspcon_set_mode(struct i2c_adapter *adapter,
* so wait and retry until time out or done.
*/
do {
- ret = drm_lspcon_get_mode(adapter, _mode);
+ ret = drm_lspcon_get_mode(dev, adapter, _mode);
if (ret) {
DRM_ERROR("can't confirm LSPCON mode change\n");
return ret;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index ca25044e7d1b..ec0048024746 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -139,10 +139,11 @@ void lspcon_detect_hdr_capability(struct intel_lspcon
*lspcon)
static enum drm_lspcon_mode lspcon_get_current_mode(struct intel_lspcon
*lspcon)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- if (drm_lspcon_get_mode(adapter, _mode)) {
+ if (drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter, _mode))
{
DRM_DEBUG_KMS("Error reading LSPCON mode\n");
return DRM_LSPCON_MODE_INVALID;
}
@@ -175,11 +176,12 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct
intel_lspcon *lspcon,
static int lspcon_change_mode(struct intel_lspcon *lspcon,
enum drm_lspcon_mode mode)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
int err;
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- err = drm_lspcon_get_mode(adapter, _mode);
+ err = drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter,
_mode);
if (err) {
DRM_ERROR("Error reading LSPCON mode\n");
return err;
@@ -190,7 +192,7 @@ static int lspcon_change_mode(struct intel_lspcon *lspcon,
return 0;
}
- err = drm_lspcon_set_mode(adapter, mode);
+ err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, adapter, mode);
if (err < 0) {
DRM_ERROR("LSPCON mode change failed\n");
return err;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 01eec9ff5962..7ee482265087 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -114,8 +114,8 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *current_mode);
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
[PATCH v3 13/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock()
Another function we need to pass drm_device down to in order to start using
drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index a63d7de85309..4a26b3e1f78f 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -252,6 +252,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
/**
* drm_dp_dual_mode_max_tmds_clock - Max TMDS clock for DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
*
@@ -265,7 +266,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
* Returns:
* Maximum supported TMDS clock rate for the DP dual mode adaptor in kHz.
*/
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter)
{
uint8_t max_tmds_clock;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index fc3e7a9396b5..46de56af33db 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2256,7 +2256,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
hdmi->dp_dual_mode.type = type;
hdmi->dp_dual_mode.max_tmds_clock =
- drm_dp_dual_mode_max_tmds_clock(type, adapter);
+ drm_dp_dual_mode_max_tmds_clock(_priv->drm, type, adapter);
drm_dbg_kms(_priv->drm,
"DP dual mode adaptor (%s) detected (max TMDS clock: %d
kHz)\n",
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 8cb0dcd98a99..aabf9c951380 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -106,7 +106,7 @@ enum drm_dp_dual_mode_type {
enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
--
2.30.2
___
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[PATCH v3 12/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output()
Another function that we'll need to pass a drm_device (and not drm_dp_aux)
down to so that we can move over to using drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 9ee75c568c37..a63d7de85309 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -336,6 +336,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
/**
* drm_dp_dual_mode_set_tmds_output - Enable/disable TMDS output buffers in
the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enable: enable (as opposed to disable) the TMDS output buffers
@@ -349,7 +350,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable)
{
uint8_t tmds_oen = enable ? 0 : DP_DUAL_MODE_TMDS_DISABLE;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 08fb98dac169..fc3e7a9396b5 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1251,8 +1251,7 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi
*hdmi, bool enable)
drm_dbg_kms(_priv->drm, "%s DP dual mode adaptor TMDS output\n",
enable ? "Enabling" : "Disabling");
- drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type,
-adapter, enable);
+ drm_dp_dual_mode_set_tmds_output(_priv->drm,
hdmi->dp_dual_mode.type, adapter, enable);
}
static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 23ce849152f3..8cb0dcd98a99 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -110,7 +110,7 @@ int drm_dp_dual_mode_max_tmds_clock(enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
--
2.30.2
___
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[PATCH v3 10/20] drm/dp: Always print aux channel name in logs
Since we're about to convert everything in drm_dp_helper.c over to using
drm_dbg_*(), let's also make our logging more consistent in drm_dp_helper.c
while we're at it to ensure that we always print the name of the AUX
channel in question.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_helper.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index eaafc676aa0c..6dc1ccd4880b 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -2819,7 +2819,7 @@ int drm_dp_pcon_frl_enable(struct drm_dp_aux *aux)
if (ret < 0)
return ret;
if (!(buf & DP_PCON_ENABLE_SOURCE_CTL_MODE)) {
- DRM_DEBUG_KMS("PCON in Autonomous mode, can't enable FRL\n");
+ DRM_DEBUG_KMS("%s: PCON in Autonomous mode, can't enable
FRL\n", aux->name);
return -EINVAL;
}
buf |= DP_PCON_ENABLE_HDMI_LINK;
@@ -2914,7 +2914,8 @@ void drm_dp_pcon_hdmi_frl_link_error_count(struct
drm_dp_aux *aux,
num_error = 0;
}
- DRM_ERROR("More than %d errors since the last read for lane
%d", num_error, i);
+ DRM_ERROR("%s: More than %d errors since the last read for lane
%d",
+ aux->name, num_error, i);
}
}
EXPORT_SYMBOL(drm_dp_pcon_hdmi_frl_link_error_count);
--
2.30.2
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[PATCH v3 14/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output()
Another function to pass drm_device * down to so we can start using the
drm_dbg_*() in the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 4a26b3e1f78f..c9c2952bcad2 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -296,6 +296,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
/**
* drm_dp_dual_mode_get_tmds_output - Get the state of the TMDS output buffers
in the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enabled: current state of the TMDS output buffers
@@ -310,8 +311,8 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
-struct i2c_adapter *adapter,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev,
+enum drm_dp_dual_mode_type type, struct
i2c_adapter *adapter,
bool *enabled)
{
uint8_t tmds_oen;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index aabf9c951380..01eec9ff5962 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -108,7 +108,7 @@ enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
--
2.30.2
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[PATCH v3 09/20] drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay()
So that we can start using drm_dbg_*() for
drm_dp_link_train_channel_eq_delay() and
drm_dp_lttpr_link_train_channel_eq_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c| 14 +-
.../gpu/drm/i915/display/intel_dp_link_training.c | 4 ++--
drivers/gpu/drm/msm/dp/dp_ctrl.c | 4 ++--
drivers/gpu/drm/msm/edp/edp_ctrl.c | 4 ++--
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h| 6 --
8 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index b0eaeb6afd29..9f0acee0a271 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -682,7 +682,7 @@ amdgpu_atombios_dp_link_train_ce(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
channel_eq = false;
while (1) {
- drm_dp_link_train_channel_eq_delay(dp_info->dpcd);
+ drm_dp_link_train_channel_eq_delay(dp_info->aux, dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 3a3c4cfb9ac6..eaafc676aa0c 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -151,7 +151,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
}
EXPORT_SYMBOL(drm_dp_link_train_clock_recovery_delay);
-static void __drm_dp_link_train_channel_eq_delay(unsigned long rd_interval)
+static void __drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+unsigned long rd_interval)
{
if (rd_interval > 4)
DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
@@ -165,9 +166,11 @@ static void __drm_dp_link_train_channel_eq_delay(unsigned
long rd_interval)
usleep_range(rd_interval, rd_interval * 2);
}
-void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
- __drm_dp_link_train_channel_eq_delay(dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
+ __drm_dp_link_train_channel_eq_delay(aux,
+dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK);
}
EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay);
@@ -183,13 +186,14 @@ static u8 dp_lttpr_phy_cap(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE], int r)
return phy_cap[r - DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1];
}
-void drm_dp_lttpr_link_train_channel_eq_delay(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
+void drm_dp_lttpr_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
{
u8 interval = dp_lttpr_phy_cap(phy_cap,
DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1) &
DP_TRAINING_AUX_RD_MASK;
- __drm_dp_link_train_channel_eq_delay(interval);
+ __drm_dp_link_train_channel_eq_delay(aux, interval);
}
EXPORT_SYMBOL(drm_dp_lttpr_link_train_channel_eq_delay);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 198ddb3c173a..6bf6f1ec13ed 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -665,11 +665,11 @@ intel_dp_link_training_channel_equalization_delay(struct
intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX) {
- drm_dp_link_train_channel_eq_delay(intel_dp->dpcd);
+ drm_dp_link_train_channel_eq_delay(_dp->aux,
intel_dp->dpcd);
} else {
const u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
- drm_dp_lttpr_link_train_channel_eq_delay(phy_caps);
+ drm_dp_lttpr_link_train_channel_eq_delay(_dp->aux,
phy_caps);
}
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 264a9eae87d3..2cebd17a7289 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1184,7 +1184,7 @@ static int dp_ctrl_link_lane_down_shift(struct
dp_ctrl_private *ctrl)
static void dp_ctrl_clear_training_pattern(struct dp_ctrl_private *ctrl)
{
d
[PATCH v3 08/20] drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay()
So that we can start using drm_dbg_*() in
drm_dp_link_train_clock_recovery_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
Reviewed-by: Rodrigo Vivi
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_dp_link_training.c | 2 +-
drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 +-
drivers/gpu/drm/msm/edp/edp_ctrl.c| 2 +-
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h | 4 +++-
8 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 14a097322238..b0eaeb6afd29 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -617,7 +617,7 @@ amdgpu_atombios_dp_link_train_cr(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index b197fdac2334..3a3c4cfb9ac6 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -132,7 +132,8 @@ u8 drm_dp_get_adjust_request_post_cursor(const u8
link_status[DP_LINK_STATUS_SIZ
}
EXPORT_SYMBOL(drm_dp_get_adjust_request_post_cursor);
-void drm_dp_link_train_clock_recovery_delay(const u8
dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_clock_recovery_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
unsigned long rd_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 591ddc4b876c..198ddb3c173a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -513,7 +513,7 @@ static void
intel_dp_link_training_clock_recovery_delay(struct intel_dp *intel_d
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX)
- drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd);
+ drm_dp_link_train_clock_recovery_delay(_dp->aux,
intel_dp->dpcd);
else
drm_dp_lttpr_link_train_clock_recovery_delay();
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 1390f3547fde..264a9eae87d3 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1103,7 +1103,7 @@ static int dp_ctrl_link_train_1(struct dp_ctrl_private
*ctrl,
tries = 0;
old_v_level = ctrl->link->phy_params.v_level;
for (tries = 0; tries < maximum_retries; tries++) {
- drm_dp_link_train_clock_recovery_delay(ctrl->panel->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->aux,
ctrl->panel->dpcd);
ret = dp_ctrl_read_link_status(ctrl, link_status);
if (ret)
diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c
b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 57af3d8b6699..6501598448b4 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -608,7 +608,7 @@ static int edp_start_link_train_1(struct edp_ctrl *ctrl)
tries = 0;
old_v_level = ctrl->v_level;
while (1) {
- drm_dp_link_train_clock_recovery_delay(ctrl->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->drm_aux,
ctrl->dpcd);
rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status);
if (rlen < DP_LINK_STATUS_SIZE) {
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c
b/drivers/gpu/drm/radeon/atombios_dp.c
index c50c504bad50..299b9d8da376 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -680,7 +680,7 @@ static int radeon_dp_link_train_cr(struct
radeon_dp_link_train_info *dp_info)
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_st
[PATCH v3 07/20] drm/dp: Clarify DP AUX registration time
The docs we had for drm_dp_aux_init() and drm_dp_aux_register() were mostly correct, except for the fact that they made the assumption that all AUX devices were grandchildren of their respective DRM devices. This is the case for most normal GPUs, but is almost never the case with SoCs and display bridges. So, let's fix this documentation to clarify when the right time to use drm_dp_aux_init() or drm_dp_aux_register() is. Signed-off-by: Lyude Paul --- drivers/gpu/drm/drm_dp_helper.c | 57 + 1 file changed, 37 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index b34105c41867..b197fdac2334 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1728,13 +1728,21 @@ EXPORT_SYMBOL(drm_dp_remote_aux_init); * drm_dp_aux_init() - minimally initialise an aux channel * @aux: DisplayPort AUX channel * - * If you need to use the drm_dp_aux's i2c adapter prior to registering it - * with the outside world, call drm_dp_aux_init() first. You must still - * call drm_dp_aux_register() once the connector has been registered to - * allow userspace access to the auxiliary DP channel. Once the AUX channel is - * no longer being used and has been unregistered with - * drm_dp_aux_unregister(), the driver must clean up any resources it's - * allocated with drm_dp_aux_fini(). + * If you need to use the drm_dp_aux's i2c adapter prior to registering it with + * the outside world, call drm_dp_aux_init() first. For drivers which are + * grandparents to their AUX adapters (e.g. the AUX adapter is parented by a + * _connector), you must still call drm_dp_aux_register() once the connector + * has been registered to allow userspace access to the auxiliary DP channel. + * Likewise, for such drivers you should also assign _dp_aux.drm_dev as + * early as possible so that the _device that corresponds to the AUX adapter + * may be mentioned in debugging output from the DRM DP helpers. + * + * For devices which use a separate platform device for their AUX adapters, this + * may be called as early as required by the driver. + * + * Once the AUX channel is no longer being used and has been unregistered with + * drm_dp_aux_unregister(), the driver must clean up any resources its allocated with + * drm_dp_aux_fini(). * * Returns: * %0 on success, negative error code on failure @@ -1794,19 +1802,28 @@ EXPORT_SYMBOL(drm_dp_aux_fini); * drm_dp_aux_register() - register aux channel * @aux: DisplayPort AUX channel * - * Automatically calls drm_dp_aux_init() if this hasn't been done yet. The - * driver must make sure to call drm_dp_aux_unregister() to unregister the - * device, and drm_dp_aux_fini() to cleanup the device after it's been - * unregistered. - * - * This should only be called when the underlying drm_connector is - * initialized already. Therefore the best place to call this is from - * _connector_funcs.late_register. Not that drivers which don't follow this - * will Oops when CONFIG_DRM_DP_AUX_CHARDEV is enabled. - * - * Drivers which need to use the aux channel before that point (e.g. at driver - * load time, before drm_dev_register() has been called) need to call - * drm_dp_aux_init(). + * Automatically calls drm_dp_aux_init() if this hasn't been done yet. This + * should only be called once the parent of @aux, _dp_aux.dev, is + * initialized. For devices which are grandparents of their AUX channels, + * _dp_aux.dev will typically be the _connector which + * corresponds to @aux. For these devices, it's advised to call + * drm_dp_aux_register() in _connector_funcs.late_register, and likewise to + * call drm_dp_aux_unregister() in _connector_funcs.early_unregister. + * Functions which don't follow this will likely Oops when + * %CONFIG_DRM_DP_AUX_CHARDEV is enabled. + * + * For devices where the AUX channel is a device that exists independently of + * the _device that uses it, such as SoCs and bridge devices, it is + * recommended to call drm_dp_aux_register() after a _device has been + * assigned to _dp_aux.drm_dev, and likewise to call + * drm_dp_aux_unregister() once the _device should no longer be associated + * with the AUX channel (e.g. on bridge detach). Additionally, the driver must + * call drm_dp_aux_fini() on @aux once it's been unregistered and is no longer + * in use. + * + * Drivers which need to use the aux channel before either of the two points + * mentioned above need to call drm_dp_aux_init() in order to use the AUX + * channel before registration. * * Returns 0 on success or a negative error code on failure. */ -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 06/20] drm/dp: Add backpointer to drm_device in drm_dp_aux
This is something that we've wanted for a while now: the ability to actually look up the respective drm_device for a given drm_dp_aux struct. This will also allow us to transition over to using the drm_dbg_*() helpers for debug message printing, as we'll finally have a drm_device to reference for doing so. Note that there is one limitation with this - because some DP AUX adapters exist as platform devices which are initialized independently of their respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be non-NULL until drm_dp_aux_register() has been called. We make sure to point this out in the documentation for struct drm_dp_aux. v3: * Add WARN_ON_ONCE() to drm_dp_aux_register() if drm_dev isn't filled out Signed-off-by: Lyude Paul Acked-by: Thierry Reding --- drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 7 --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 + drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 1 + drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 1 + drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1 + drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 1 + drivers/gpu/drm/bridge/tc358767.c| 1 + drivers/gpu/drm/bridge/ti-sn65dsi86.c| 1 + drivers/gpu/drm/drm_dp_aux_dev.c | 6 ++ drivers/gpu/drm/drm_dp_helper.c | 2 ++ drivers/gpu/drm/drm_dp_mst_topology.c| 1 + drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 + drivers/gpu/drm/msm/edp/edp.h| 3 +-- drivers/gpu/drm/msm/edp/edp_aux.c| 5 +++-- drivers/gpu/drm/msm/edp/edp_ctrl.c | 2 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 1 + drivers/gpu/drm/radeon/atombios_dp.c | 1 + drivers/gpu/drm/tegra/dpaux.c| 1 + drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 + include/drm/drm_dp_helper.h | 9 - 20 files changed, 38 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c index 54c209ab8c9f..14a097322238 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c @@ -190,11 +190,12 @@ int amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector) amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd; amdgpu_connector->ddc_bus->aux.transfer = amdgpu_atombios_dp_aux_transfer; + amdgpu_connector->ddc_bus->aux.drm_dev = amdgpu_connector->base.dev; + ret = drm_dp_aux_init(_connector->ddc_bus->aux); - if (ret) - return ret; + if (!ret) + amdgpu_connector->ddc_bus->has_aux = true; - amdgpu_connector->ddc_bus->has_aux = true; return ret; } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 51fbbf3ef59b..a98bd3b521b2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -438,6 +438,7 @@ int amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm, dm_aux->aux.transfer = dm_dp_aux_transfer; dm_aux->ddc_service = aconnector->dc_link->ddc; + dm_aux->aux.drm_dev = dm->ddev; ret = drm_dp_aux_init(_aux->aux); if (ret) diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c index c105dcb79c37..f4e6a53f3821 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c @@ -537,6 +537,7 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge, /* Register aux channel */ anx6345->aux.name = "DP-AUX"; anx6345->aux.dev = >client->dev; + anx6345->aux.drm_dev = bridge->dev; anx6345->aux.transfer = anx6345_aux_transfer; err = drm_dp_aux_register(>aux); diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c index 0778458e81be..7bd28c077181 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c @@ -905,6 +905,7 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge, /* Register aux channel */ anx78xx->aux.name = "DP-AUX"; anx78xx->aux.dev = >client->dev; + anx78xx->aux.drm_dev = bridge->dev; anx78xx->aux.transfer = anx78xx_aux_transfer; err = drm_dp_aux_register(>aux); diff --git a/drivers/gpu/drm/bridge/analogix/analogi
[PATCH v3 05/20] drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister
Since AUX adapters on nouveau have their respective DRM connectors as
parents, we need to make sure that we register then after their connectors.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 25 -
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
index e5a93fab856e..56eaa29b34d6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -401,7 +401,6 @@ nouveau_connector_destroy(struct drm_connector *connector)
drm_connector_cleanup(connector);
if (nv_connector->aux.transfer) {
drm_dp_cec_unregister_connector(_connector->aux);
- drm_dp_aux_unregister(_connector->aux);
drm_dp_aux_fini(_connector->aux);
kfree(nv_connector->aux.name);
}
@@ -906,13 +905,29 @@ nouveau_connector_late_register(struct drm_connector
*connector)
int ret;
ret = nouveau_backlight_init(connector);
+ if (ret)
+ return ret;
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ ret = drm_dp_aux_register(_connector(connector)->aux);
+ if (ret)
+ goto backlight_fini;
+ }
+
+ return 0;
+backlight_fini:
+ nouveau_backlight_fini(connector);
return ret;
}
static void
nouveau_connector_early_unregister(struct drm_connector *connector)
{
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
+ drm_dp_aux_unregister(_connector(connector)->aux);
+
nouveau_backlight_fini(connector);
}
@@ -1344,14 +1359,14 @@ nouveau_connector_create(struct drm_device *dev,
snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
dcbe->hasht, dcbe->hashm);
nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
- ret = drm_dp_aux_register(_connector->aux);
+ ret = drm_dp_aux_init(_connector->aux);
if (ret) {
- NV_ERROR(drm, "failed to register aux channel\n");
+ NV_ERROR(drm, "Failed to init AUX adapter for
sor-%04x-%04x: %d\n",
+dcbe->hasht, dcbe->hashm, ret);
kfree(nv_connector);
return ERR_PTR(ret);
}
- funcs = _connector_funcs;
- break;
+ fallthrough;
default:
funcs = _connector_funcs;
break;
--
2.30.2
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[PATCH v3 04/20] drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace
Just adds some missing calls to
drm_dp_aux_register()/drm_dp_aux_unregister() for when we attach/detach the
bridge.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index c5e2bc75b226..518e9a441c21 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1719,10 +1719,14 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
dev_dbg(mhdp->dev, "%s\n", __func__);
+ ret = drm_dp_aux_register(>aux);
+ if (ret < 0)
+ return ret;
+
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
ret = cdns_mhdp_connector_init(mhdp);
if (ret)
- return ret;
+ goto aux_unregister;
}
spin_lock(>start_lock);
@@ -1738,6 +1742,9 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
mhdp->regs + CDNS_APB_INT_MASK);
return 0;
+aux_unregister:
+ drm_dp_aux_unregister(>aux);
+ return ret;
}
static void cdns_mhdp_configure_video(struct cdns_mhdp_device *mhdp,
@@ -2082,6 +2089,8 @@ static void cdns_mhdp_detach(struct drm_bridge *bridge)
dev_dbg(mhdp->dev, "%s\n", __func__);
+ drm_dp_aux_unregister(>aux);
+
spin_lock(>start_lock);
mhdp->bridge_attached = false;
--
2.30.2
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[PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini
When moving around drm_dp_aux_register() calls, it turned out we
accidentally managed to cause issues with the Tegra driver due to the fact
the Tegra driver would attempt to retrieve a reference to the AUX channel's
i2c adapter - which wouldn't be initialized until drm_dp_aux_register() is
called.
This doesn't actually make a whole ton of sense, as it's not unexpected for
a driver to need to be able to use an AUX adapter before it's been
registered. Likewise-it's not unexpected for a driver to try using the i2c
adapter for said AUX channel before it's been registered as well. In fact,
the current documentation for drm_dp_aux_init() even seems to imply that
drm_dp_aux_init() is supposed to be handling i2c adapter creation for this
precise reason - not drm_dp_aux_register().
Since the i2c adapter doesn't need to be linked to the DRM device in any
way, we can just fix this problem by moving i2c adapter creation out of
drm_dp_aux_register() and into drm_dp_aux_init(). Additionally, since this
means that drm_dp_aux_init() can fail we go ahead and add a __must_check
attribute to it so that drivers don't ignore its return status on failures.
And finally, we add a drm_dp_aux_fini() and hook it up in all DRM drivers
across the kernel to take care of cleaning up the i2c adapter once it's no
longer needed.
This should also fix the regressions noted in the Tegra driver.
Signed-off-by: Lyude Paul
Fixes: 39c17ae60ea9 ("drm/tegra: Don't register DP AUX channels before
connectors")
Cc: Thierry Reding
Cc: Thierry Reding
---
.../gpu/drm/amd/amdgpu/amdgpu_connectors.c| 7 +-
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 10 ++-
drivers/gpu/drm/amd/amdgpu/atombios_dp.h | 2 +-
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 6 +-
.../drm/bridge/analogix/analogix-anx6345.c| 2 +
.../drm/bridge/analogix/analogix-anx78xx.c| 2 +
.../drm/bridge/analogix/analogix_dp_core.c| 1 +
.../drm/bridge/cadence/cdns-mhdp8546-core.c | 14 ++-
drivers/gpu/drm/bridge/tc358767.c | 5 +-
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++--
drivers/gpu/drm/drm_dp_helper.c | 88 ++-
drivers/gpu/drm/i915/display/intel_dp_aux.c | 10 ++-
drivers/gpu/drm/i915/display/intel_dp_aux.h | 2 +-
drivers/gpu/drm/msm/dp/dp_aux.c | 1 +
drivers/gpu/drm/msm/edp/edp_aux.c | 1 +
drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
drivers/gpu/drm/radeon/radeon_connectors.c| 1 +
drivers/gpu/drm/tegra/dpaux.c | 14 ++-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 +
include/drm/drm_dp_helper.h | 3 +-
20 files changed, 140 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index b9c11c2b2885..23b2134a651b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -1963,8 +1963,11 @@ amdgpu_connector_add(struct amdgpu_device *adev,
connector->display_info.subpixel_order = subpixel_order;
- if (has_aux)
- amdgpu_atombios_dp_aux_init(amdgpu_connector);
+ if (has_aux) {
+ int ret = amdgpu_atombios_dp_aux_init(amdgpu_connector);
+ if (ret)
+ goto failed;
+ }
if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
connector_type == DRM_MODE_CONNECTOR_eDP) {
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index a3ba9ca11e98..54c209ab8c9f 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -184,12 +184,18 @@ amdgpu_atombios_dp_aux_transfer(struct drm_dp_aux *aux,
struct drm_dp_aux_msg *m
return ret;
}
-void amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector)
+int amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector)
{
+ int ret;
+
amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
amdgpu_connector->ddc_bus->aux.transfer =
amdgpu_atombios_dp_aux_transfer;
- drm_dp_aux_init(_connector->ddc_bus->aux);
+ ret = drm_dp_aux_init(_connector->ddc_bus->aux);
+ if (ret)
+ return ret;
+
amdgpu_connector->ddc_bus->has_aux = true;
+ return ret;
}
/* general DP utility functions */
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
index f59d85eaddf0..6b65cbf009fd 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
@@ -24,7 +24,7 @@
#ifndef __ATOMBIOS_DP_H__
#define __ATOMBIOS_DP_H__
-void amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector);
+int amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector);
u8 amdgpu_atombios_dp_get_sinktype(st
[PATCH v3 02/20] drm/dp: Add __no_check to drm_dp_aux_register()
Since we're about to make it so that drm_dp_aux_init() can fail (and thus - should have it's return value checked) - we should require that callers of drm_dp_aux_register() also check it's return value since drm_dp_aux_init() can be called from there. Signed-off-by: Lyude Paul --- include/drm/drm_dp_helper.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 1e85c2021f2f..e44b0ee7b85e 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -2010,7 +2010,7 @@ bool drm_dp_lttpr_pre_emphasis_level_3_supported(const u8 caps[DP_LTTPR_PHY_CAP_ void drm_dp_remote_aux_init(struct drm_dp_aux *aux); void drm_dp_aux_init(struct drm_dp_aux *aux); -int drm_dp_aux_register(struct drm_dp_aux *aux); +__must_check int drm_dp_aux_register(struct drm_dp_aux *aux); void drm_dp_aux_unregister(struct drm_dp_aux *aux); int drm_dp_start_crc(struct drm_dp_aux *aux, struct drm_crtc *crtc); -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v3 01/20] drm/amdgpu: Add error handling to amdgpu_dm_initialize_dp_connector()
While working on moving i2c device registration into drm_dp_aux_init() - I
realized that in order to do so we need to make sure that drivers calling
drm_dp_aux_init() handle any errors it could possibly return. In the
process of doing that, I noticed that the majority of AMD's code for DP
connector creation doesn't attempt to do any real error handling.
So, let's fix this and also cleanup amdgpu_dm_initialize_dp_connector()
while we're at it. This way we can handle the error codes from
drm_dp_aux_init().
Signed-off-by: Lyude Paul
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 29 +++-
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 44 +++
.../display/amdgpu_dm/amdgpu_dm_mst_types.h | 6 +--
3 files changed, 45 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a0c8c41e4e57..fc5d315bbb05 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7608,10 +7608,9 @@ static int amdgpu_dm_connector_init(struct
amdgpu_display_manager *dm,
aconnector->i2c = i2c;
res = i2c_add_adapter(>base);
-
if (res) {
DRM_ERROR("Failed to register hw i2c %d\n", link->link_index);
- goto out_free;
+ goto fail_free;
}
connector_type = to_drm_connector_type(link->connector_signal);
@@ -7625,8 +7624,7 @@ static int amdgpu_dm_connector_init(struct
amdgpu_display_manager *dm,
if (res) {
DRM_ERROR("connector_init failed\n");
- aconnector->connector_id = -1;
- goto out_free;
+ goto fail_id;
}
drm_connector_helper_add(
@@ -7643,15 +7641,22 @@ static int amdgpu_dm_connector_init(struct
amdgpu_display_manager *dm,
drm_connector_attach_encoder(
>base, >base);
- if (connector_type == DRM_MODE_CONNECTOR_DisplayPort
- || connector_type == DRM_MODE_CONNECTOR_eDP)
- amdgpu_dm_initialize_dp_connector(dm, aconnector,
link->link_index);
-
-out_free:
- if (res) {
- kfree(i2c);
- aconnector->i2c = NULL;
+ if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+ connector_type == DRM_MODE_CONNECTOR_eDP) {
+ res = amdgpu_dm_initialize_dp_connector(dm, aconnector,
link->link_index);
+ if (res)
+ goto fail_cleanup;
}
+
+ return 0;
+fail_cleanup:
+ drm_connector_cleanup(>base);
+fail_id:
+ aconnector->connector_id = -1;
+fail_free:
+ kfree(i2c);
+ aconnector->i2c = NULL;
+
return res;
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 73cdb9fe981a..3dee9cce9c9e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -425,33 +425,39 @@ static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
.add_connector = dm_dp_add_mst_connector,
};
-void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
- struct amdgpu_dm_connector *aconnector,
- int link_index)
+int amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
+ struct amdgpu_dm_connector *aconnector,
+ int link_index)
{
- aconnector->dm_dp_aux.aux.name =
- kasprintf(GFP_KERNEL, "AMDGPU DM aux hw bus %d",
- link_index);
- aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
- aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
+ struct amdgpu_dm_dp_aux *dm_aux = >dm_dp_aux;
+ int ret;
- drm_dp_aux_init(>dm_dp_aux.aux);
- drm_dp_cec_register_connector(>dm_dp_aux.aux,
- >base);
+ dm_aux->aux.name = kasprintf(GFP_KERNEL, "AMDGPU DM aux hw bus %d",
link_index);
+ if (!dm_aux->aux.name)
+ return -ENOMEM;
+
+ dm_aux->aux.transfer = dm_dp_aux_transfer;
+ dm_aux->ddc_service = aconnector->dc_link->ddc;
+
+ drm_dp_aux_init(_aux->aux);
+ drm_dp_cec_register_connector(_aux->aux, >base);
if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_eDP)
- return;
+ return 0;
aconnector->mst_mgr.cbs = _mst_cbs;
- drm_dp_mst_topology_mgr_init(
- >mst_mgr,
- adev_to_drm(dm->adev),
- >dm_dp_aux.aux,
- 16,
- 4,
- aco
[PATCH v3 00/20] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers
Since it's been asked quite a few times on some of the various DP related patch series I've submitted to use the new DRM printk helpers, and it technically wasn't really trivial to do this before due to the lack of a consistent way to find a drm_device for an AUX channel, this patch series aims to address this. In this series we: * (NEW!) Move i2c adapter setup into drm_dp_aux_init() and add drm_dp_aux_fini() * Clean-up potentially erroneous usages of drm_dp_aux_init() and drm_dp_aux_register() so that actual AUX registration doesn't happen until we have an associated DRM device * Clean-up any obvious errors in drivers we find along the way * Add a backpointer to the respective drm_device for an AUX channel in drm_dp_aux.drm_dev, and hook it up in every driver with an AUX channel across the tree * Add a new ratelimited print helper we'll need for converting the DP helpers over to using the new DRM printk helpers * Fix any inconsistencies with logging in drm_dp_helper.c so we always have the aux channel name printed * Prepare the various DP helpers so they can find the correct drm_device to use for logging * And finally, convert all of the DP helpers over to using drm_dbg_*() and drm_err(). Lyude Paul (20): drm/amdgpu: Add error handling to amdgpu_dm_initialize_dp_connector() drm/dp: Add __no_check to drm_dp_aux_register() drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister drm/dp: Add backpointer to drm_device in drm_dp_aux drm/dp: Clarify DP AUX registration time drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay() drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay() drm/dp: Always print aux channel name in logs drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock() drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output() drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode() drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw() drm/print: Handle potentially NULL drm_devices in drm_dbg_* drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*() drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms() drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*() .../gpu/drm/amd/amdgpu/amdgpu_connectors.c| 7 +- drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 17 +- drivers/gpu/drm/amd/amdgpu/atombios_dp.h | 2 +- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 29 +- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 49 ++- .../display/amdgpu_dm/amdgpu_dm_mst_types.h | 6 +- .../drm/bridge/analogix/analogix-anx6345.c| 3 + .../drm/bridge/analogix/analogix-anx78xx.c| 3 + .../drm/bridge/analogix/analogix_dp_core.c| 2 + .../drm/bridge/cadence/cdns-mhdp8546-core.c | 26 +- drivers/gpu/drm/bridge/tc358767.c | 6 +- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 17 +- drivers/gpu/drm/drm_dp_aux_dev.c | 6 + drivers/gpu/drm/drm_dp_dual_mode_helper.c | 68 ++-- drivers/gpu/drm/drm_dp_helper.c | 260 +++- drivers/gpu/drm/drm_dp_mst_topology.c | 376 +- drivers/gpu/drm/i915/display/intel_dp_aux.c | 11 +- drivers/gpu/drm/i915/display/intel_dp_aux.h | 2 +- .../drm/i915/display/intel_dp_link_training.c | 6 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +- drivers/gpu/drm/i915/display/intel_hdmi.c | 7 +- drivers/gpu/drm/i915/display/intel_lspcon.c | 17 +- drivers/gpu/drm/msm/dp/dp_aux.c | 1 + drivers/gpu/drm/msm/dp/dp_ctrl.c | 6 +- drivers/gpu/drm/msm/edp/edp.h | 3 +- drivers/gpu/drm/msm/edp/edp_aux.c | 6 +- drivers/gpu/drm/msm/edp/edp_ctrl.c| 8 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 27 +- drivers/gpu/drm/radeon/atombios_dp.c | 5 +- drivers/gpu/drm/radeon/radeon_connectors.c| 1 + drivers/gpu/drm/tegra/dpaux.c | 15 +- drivers/gpu/drm/xlnx/zynqmp_dp.c | 6 +- include/drm/drm_dp_dual_mode_helper.h | 14 +- include/drm/drm_dp_helper.h | 24 +- include/drm/drm_dp_mst_helper.h | 3 +- include/drm/drm_print.h | 20 +- 36 files changed, 631 insertions(+), 431 deletions(-) -- 2.30.2 ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH 03/30] drm/tegra: Don't register DP AUX channels before connectors
On Wed, 2021-04-14 at 18:49 +0200, Thierry Reding wrote: > On Fri, Feb 19, 2021 at 04:52:59PM -0500, Lyude Paul wrote: > > As pointed out by the documentation for drm_dp_aux_register(), > > drm_dp_aux_init() should be used in situations where the AUX channel for a > > display driver can potentially be registered before it's respective DRM > > driver. This is the case with Tegra, since the DP aux channel exists as a > > platform device instead of being a grandchild of the DRM device. > > > > Since we're about to add a backpointer to a DP AUX channel's respective > > DRM > > device, let's fix this so that we don't potentially allow userspace to use > > the AUX channel before we've associated it with it's DRM connector. > > > > Signed-off-by: Lyude Paul > > --- > > drivers/gpu/drm/tegra/dpaux.c | 11 ++- > > 1 file changed, 6 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c > > index 105fb9cdbb3b..ea56c6ec25e4 100644 > > --- a/drivers/gpu/drm/tegra/dpaux.c > > +++ b/drivers/gpu/drm/tegra/dpaux.c > > @@ -534,9 +534,7 @@ static int tegra_dpaux_probe(struct platform_device > > *pdev) > > dpaux->aux.transfer = tegra_dpaux_transfer; > > dpaux->aux.dev = >dev; > > > > - err = drm_dp_aux_register(>aux); > > - if (err < 0) > > - return err; > > + drm_dp_aux_init(>aux); > > I just noticed that this change causes an error on some setups that I > haven't seen before. The problem is that the SOR driver tries to grab a > reference to the I2C device to make sure it doesn't go away while it has > a pointer to it. > > However, since now the I2C adapter hasn't been registered yet, I get > this: > > [ 15.013969] kobject: '(null)' (5c903e43): is not > initialized, yet kobject_get() is being called. > > I recall that you wanted to make this change so that a backpointer to > the DRM device could be added (I think that's patch 15 of the series), > but I didn't see that patch get merged, so it's a bit difficult to try > and fix this up. I'm pretty sure I already merged the tegra change in drm-misc-next, so if it's causing issues you probably should send out a revert for now and I can r-b it so we can figure out a better solution for this in the mean time > Has the situation changed? Do we no longer need the backpointer? If we > still want it, what's the plan for merging the change? Should I work > under the assumption that patch will make it in sometime and try to fix > this on top of that? yes we do still need the backpointer - I'm just still working on getting reviews for some of the other parts of this series, and have been on PTO/busy with a couple of other things. > > I'm thinking that perhaps we can move the I2C adapter registration into > drm_dp_aux_init() since that's independent of the DRM device. Yeah this makes sense for me - I can try to make this change on the next respin of this series. What kind of setup were you able to reproduce issues on this with btw? > It would > also make a bit more sense from the Tegra driver's point of view where > all devices would be created during the ->probe() path, and only during > the ->init() path would the connection between DRM device and DRM DP AUX > device be established. > > Thierry -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [Intel-gfx] [PATCH v2 00/20] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers
JFYI too - there was a legitimate looking CI failure on intel with this series, so don't be surprised if I have to respin a patch or two (I should be able to get it asap as I finally just cleared most of the stuff on my plate off for a while) On Thu, 2021-04-08 at 14:13 +0300, Jani Nikula wrote: > On Thu, 08 Apr 2021, Daniel Vetter wrote: > > I think Dave caught up on pulls to drm-next, so after a backmerge of that > > to drm-misc-next I think should be all fine to apply directly, no need for > > topic branch. > > Yup. We've done the backmerges to drm-intel-next and drm-intel-gt-next, > and are all in sync, it's only the drm-next -> drm-misc-next backmerge > that's still needed. > > BR, > Jani. > -- Sincerely, Lyude Paul (she/her) Software Engineer at Red Hat Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've asked me a question, are waiting for a review/merge on a patch, etc. and I haven't responded in a while, please feel free to send me another email to check on my status. I don't bite! ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[PATCH v2 3/3] drm/nouveau: begin documenting core nouveau structures
From: Jeremy Cline
Start on documentation for the Nouveau device structure and the NVIF
client structure it uses. This documentation is not complete as the
structures are non-trivial and I am not familiar with large portions of
them.
Signed-off-by: Jeremy Cline
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/nouveau_drv.h | 67 +++
1 file changed, 67 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h
b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 8eb133fd6df0..43d751d2445f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -88,8 +88,20 @@ enum nouveau_drm_handle {
NVDRM_NVSW= 0x,
};
+/**
+ * struct nouveau_cli - A DRM-specific NVIF client.
+ *
+ * This encapsulates a NVIF client and is intended to be the sole interface
+ * between the DRM APIs and NVKM. An instance of this structure is allocated
+ * for each userspace client when they open the device file. Additionally,
+ * there are several allocated strictly for the kernel's use.
+ */
struct nouveau_cli {
struct nvif_client base;
+
+ /**
+* @drm: A reference to the device that the client is associated with.
+*/
struct nouveau_drm *drm;
struct mutex mutex;
@@ -99,6 +111,9 @@ struct nouveau_cli {
struct nouveau_vmm svm;
const struct nvif_mclass *mem;
+ /**
+* @head: The list entry for this client in the @drm device's list of
clients.
+*/
struct list_head head;
void *abi16;
struct list_head objects;
@@ -106,13 +121,36 @@ struct nouveau_cli {
char name[32];
struct work_struct work;
+
+ /**
+* @worker: List of pending nouveau_cli_work associated with
this client.
+*/
struct list_head worker;
+
+ /**
+* @lock: Protects the @worker list. Additionally, this lock on the
+* @drm.master instance is used to serialize destruction of the @base
+* member in this structure, as well as the destruction of the
+* nvif_mem embedded in nouveau_mem instances.
+*/
struct mutex lock;
};
+/**
+ * struct nouveau_cli_work - A pending work item for an NVIF client.
+ */
struct nouveau_cli_work {
void (*func)(struct nouveau_cli_work *);
+
+ /**
+* @cli: Reference to the NVIF client this work belongs to.
+*/
struct nouveau_cli *cli;
+
+ /**
+* @head: The list entry for this work item in the nouveau_cli
+* worker list.
+*/
struct list_head head;
struct dma_fence *fence;
@@ -131,9 +169,32 @@ nouveau_cli(struct drm_file *fpriv)
#include
#include
+/**
+ * struct nouveau_drm - The nouveau-specific device structure.
+ *
+ * This structure is allocated for a device when it is probed and keeps track
+ * of all the nouveau-specific device details. The lifetime of this structure
+ * is the same as the lifetime of a drm_device and is managed by the
+ * DRM layer.
+ */
struct nouveau_drm {
+ /**
+* @parent: Implementation of the interface required to use the
NVIF_DEBUG
+* and NVIF_ERROR macros
+*/
struct nvif_parent parent;
+
+ /**
+* @master: This NVIF client is used to initialize the NVIF driver and
used
+* for TTM memory allocations. It is the root of the NVIF object tree.
+*/
struct nouveau_cli master;
+
+ /**
+* @client: This NVIF client is used by the DRM layer to interact with
+* the NVKM layer for everything except TTM memory allocations. It, and
+* all other clients, are children of the primary (@master) client.
+*/
struct nouveau_cli client;
/**
@@ -141,6 +202,12 @@ struct nouveau_drm {
*/
struct drm_device drm_dev;
+ /**
+* @clients: List of all nouveau_cli allocated for userspace
+* associated with this DRM device. Clients are allocated when the DRM
+* file is opened and deallocated when the file is closed. This list is
+* protected by the mutex in @client.
+*/
struct list_head clients;
u8 old_pm_cap;
--
2.30.2
___
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dri-devel@lists.freedesktop.org
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[PATCH v2 1/3] drm/nouveau: Use helper to convert nouveau_drm to drm_device
From: Jeremy Cline
In order to use the resource-managed allocation of a struct drm_device
instance, it is recommended to embed the drm_device instance within the
driver-specific structure.
As there is already a helper to convert a drm_device to a nouveau_drm
struct, this adds an inverse function and changes all direct references
to the pointer within nouveau_drm to use the function. It also adds a
helper to convert directly to a generic device structure.
This allows us to switch from maintaining a pointer in nouveau_drm to
embedding the structure by simply altering the helper function
implementations.
This patch should introduce no functional changes.
Signed-off-by: Jeremy Cline
Reviewed-by: Lyude Paul
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/dispnv04/crtc.c | 10 +++---
drivers/gpu/drm/nouveau/dispnv50/base.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/base507c.c | 7 ++--
drivers/gpu/drm/nouveau/dispnv50/core.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/core507d.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/curs.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/curs507a.c | 5 +--
drivers/gpu/drm/nouveau/dispnv50/disp.c | 16 +
drivers/gpu/drm/nouveau/dispnv50/oimm.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/oimm507b.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/ovly.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/ovly507e.c | 5 +--
drivers/gpu/drm/nouveau/dispnv50/wimm.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/wimmc37b.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/wndw.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c | 5 +--
drivers/gpu/drm/nouveau/nouveau_bo.c| 14
drivers/gpu/drm/nouveau/nouveau_debugfs.c | 9 +++---
drivers/gpu/drm/nouveau/nouveau_display.c | 16 -
drivers/gpu/drm/nouveau/nouveau_dmem.c | 17 +-
drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_drv.h | 36 -
drivers/gpu/drm/nouveau/nouveau_fbcon.c | 19 +--
drivers/gpu/drm/nouveau/nouveau_gem.c | 8 ++---
drivers/gpu/drm/nouveau/nouveau_svm.c | 4 +--
drivers/gpu/drm/nouveau/nouveau_ttm.c | 10 +++---
drivers/gpu/drm/nouveau/nouveau_vga.c | 8 ++---
27 files changed, 128 insertions(+), 83 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv04/crtc.c
b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
index f9e962fd94d0..3e1b00f3086e 100644
--- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c
+++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c
@@ -915,7 +915,7 @@ nv04_crtc_mode_set_base_atomic(struct drm_crtc *crtc,
int x, int y, enum mode_set_atomic state)
{
struct nouveau_drm *drm = nouveau_drm(crtc->dev);
- struct drm_device *dev = drm->dev;
+ struct drm_device *dev = nouveau_to_drm_dev(drm);
if (state == ENTER_ATOMIC_MODE_SET)
nouveau_fbcon_accel_save_disable(dev);
@@ -990,7 +990,7 @@ nv04_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file
*file_priv,
uint32_t buffer_handle, uint32_t width, uint32_t height)
{
struct nouveau_drm *drm = nouveau_drm(crtc->dev);
- struct drm_device *dev = drm->dev;
+ struct drm_device *dev = nouveau_to_drm_dev(drm);
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
struct nouveau_bo *cursor = NULL;
struct drm_gem_object *gem;
@@ -1050,7 +1050,7 @@ nv04_finish_page_flip(struct nouveau_channel *chan,
{
struct nouveau_fence_chan *fctx = chan->fence;
struct nouveau_drm *drm = chan->drm;
- struct drm_device *dev = drm->dev;
+ struct drm_device *dev = nouveau_to_drm_dev(drm);
struct nv04_page_flip_state *s;
unsigned long flags;
@@ -1088,7 +1088,7 @@ nv04_flip_complete(struct nvif_notify *notify)
struct nv04_page_flip_state state;
if (!nv04_finish_page_flip(chan, )) {
- nv_set_crtc_base(drm->dev, drm_crtc_index(state.crtc),
+ nv_set_crtc_base(nouveau_to_drm_dev(drm),
drm_crtc_index(state.crtc),
state.offset + state.crtc->y *
state.pitch + state.crtc->x *
state.bpp / 8);
@@ -1106,7 +1106,7 @@ nv04_page_flip_emit(struct nouveau_channel *chan,
{
struct nouveau_fence_chan *fctx = chan->fence;
struct nouveau_drm *drm = chan->drm;
- struct drm_device *dev = drm->dev;
+ struct drm_device *dev = nouveau_to_drm_dev(drm);
struct nvif_push *push = chan->chan.push;
unsigned long flags;
int ret;
diff --git a/drivers/gpu/drm/nouveau/dispnv50/base.c
b/drivers/gpu/drm/nouveau/dispnv50/base.c
index 7c752acf2b48..cd70456dd37f 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/base.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/base.c
@@ -40,7 +40,7 @@ nv50_base_new(struct nouveau_drm
[PATCH v2 2/3] drm/nouveau: manage nouveau_drm lifetime with devres
From: Jeremy Cline
Make use of the devm_drm_dev_alloc() API to bind the lifetime of
nouveau_drm structure to the drm_device. This is important because a
reference to nouveau_drm is accessible from drm_device, which is
provided to a number of DRM layer callbacks that can run after the
deallocation of nouveau_drm currently occurs.
Signed-off-by: Jeremy Cline
Reviewed-by: Lyude Paul
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/nouveau_drm.c | 44 ---
drivers/gpu/drm/nouveau/nouveau_drv.h | 10 --
2 files changed, 26 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c
b/drivers/gpu/drm/nouveau/nouveau_drm.c
index bce1abea0d58..1285631c6797 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -30,9 +30,11 @@
#include
#include
+#include
#include
#include
#include
+#include
#include
#include
@@ -532,13 +534,8 @@ nouveau_parent = {
static int
nouveau_drm_device_init(struct drm_device *dev)
{
- struct nouveau_drm *drm;
int ret;
-
- if (!(drm = kzalloc(sizeof(*drm), GFP_KERNEL)))
- return -ENOMEM;
- dev->dev_private = drm;
- drm->dev = dev;
+ struct nouveau_drm *drm = nouveau_drm(dev);
nvif_parent_ctor(_parent, >parent);
drm->master.base.object.parent = >parent;
@@ -620,7 +617,6 @@ nouveau_drm_device_init(struct drm_device *dev)
nouveau_cli_fini(>master);
fail_alloc:
nvif_parent_dtor(>parent);
- kfree(drm);
return ret;
}
@@ -654,7 +650,6 @@ nouveau_drm_device_fini(struct drm_device *dev)
nouveau_cli_fini(>client);
nouveau_cli_fini(>master);
nvif_parent_dtor(>parent);
- kfree(drm);
}
/*
@@ -720,6 +715,7 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
{
struct nvkm_device *device;
struct drm_device *drm_dev;
+ struct nouveau_drm *nv_dev;
int ret;
if (vga_switcheroo_client_probe_defer(pdev))
@@ -750,15 +746,16 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
if (nouveau_atomic)
driver_pci.driver_features |= DRIVER_ATOMIC;
- drm_dev = drm_dev_alloc(_pci, >dev);
- if (IS_ERR(drm_dev)) {
- ret = PTR_ERR(drm_dev);
+ nv_dev = devm_drm_dev_alloc(>dev, _stub, typeof(*nv_dev),
drm_dev);
+ if (IS_ERR(nv_dev)) {
+ ret = PTR_ERR(nv_dev);
goto fail_nvkm;
}
+ drm_dev = nouveau_to_drm_dev(nv_dev);
ret = pci_enable_device(pdev);
if (ret)
- goto fail_drm;
+ goto fail_nvkm;
pci_set_drvdata(pdev, drm_dev);
@@ -777,8 +774,6 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
nouveau_drm_device_fini(drm_dev);
fail_pci:
pci_disable_device(pdev);
-fail_drm:
- drm_dev_put(drm_dev);
fail_nvkm:
nvkm_device_del();
return ret;
@@ -798,7 +793,6 @@ nouveau_drm_device_remove(struct drm_device *dev)
device = nvkm_device_find(client->device);
nouveau_drm_device_fini(dev);
- drm_dev_put(dev);
nvkm_device_del();
}
@@ -1284,7 +1278,8 @@ nouveau_platform_device_create(const struct
nvkm_device_tegra_func *func,
struct platform_device *pdev,
struct nvkm_device **pdevice)
{
- struct drm_device *drm;
+ struct nouveau_drm *nv_dev;
+ struct drm_device *drm_dev;
int err;
err = nvkm_device_tegra_new(func, pdev, nouveau_config, nouveau_debug,
@@ -1292,22 +1287,21 @@ nouveau_platform_device_create(const struct
nvkm_device_tegra_func *func,
if (err)
goto err_free;
- drm = drm_dev_alloc(_platform, >dev);
- if (IS_ERR(drm)) {
- err = PTR_ERR(drm);
+ nv_dev = devm_drm_dev_alloc(>dev, _platform,
typeof(*nv_dev), drm_dev);
+ if (IS_ERR(nv_dev)) {
+ err = PTR_ERR(nv_dev);
goto err_free;
}
+ drm_dev = nouveau_to_drm_dev(nv_dev);
- err = nouveau_drm_device_init(drm);
+ err = nouveau_drm_device_init(drm_dev);
if (err)
- goto err_put;
+ goto err_free;
- platform_set_drvdata(pdev, drm);
+ platform_set_drvdata(pdev, drm_dev);
- return drm;
+ return drm_dev;
-err_put:
- drm_dev_put(drm);
err_free:
nvkm_device_del(pdevice);
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h
b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 526e110b52ac..8eb133fd6df0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -135,7 +135,11 @@ struct nouveau_drm {
struct nvif_parent parent;
struct nouveau_cli master;
struct nouveau_cli client;
- struct drm_device *dev;
+
+ /**
+* @drm_dev: The parent
Re: [PATCH v2 0/3] drm/nouveau: fix a use-after-free in postclose()
This patch series is: Reviewed-by: Lyude Paul Btw - in the future if you need to send a respin of multiple patches, you need to send it as it's own separate series instead of replying to the previous one (one-off respins can just be posted as replies though), otherwise patchwork won't pick it up On Wed, 2020-11-25 at 15:26 -0500, Jeremy Cline wrote: > This series fixes a number of use-after-frees in nouveau's postclose() > handler. It was discovered by pointing IGT's core_hotunplug tests at a > nouveau device, but the steps to reproduce it are simple: > > 1. Open the device file > 2. Unbind the driver or remove the device > 3. Close the file opened in step 1. > > During the device removal, the nouveau_drm structure is de-allocated, > but is dereferenced in the postclose() handler. > > One obvious solution is to ensure all the operations in the postclose() > handler are valid by extending the lifetime of the nouveau_drm > structure. This is possible with the new devm_drm_dev_alloc() interface, > but the change is somewhat invasive so I thought it best to submit that > work separately. > > Instead, we make use of the drm_dev_unplug() API, clean up all clients > in the device removal call, and check to make sure the device has not > been unplugged in the postclose() handler. While this does not enable > hot-unplug support for nouveau, it's enough to avoid crashing the kernel > and leads to all the core_hotunplug tests to pass. > > This series reroll addresses a missing mutex_destroy() call and a typo > in a commit message. > > Jeremy Cline (3): > drm/nouveau: use drm_dev_unplug() during device removal > drm/nouveau: Add a dedicated mutex for the clients list > drm/nouveau: clean up all clients on device removal > > drivers/gpu/drm/nouveau/nouveau_drm.c | 42 +++ > drivers/gpu/drm/nouveau/nouveau_drv.h | 5 > 2 files changed, 42 insertions(+), 5 deletions(-) > -- Sincerely, Lyude Paul (she/her) Software Engineer at Red Hat Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've asked me a question, are waiting for a review/merge on a patch, etc. and I haven't responded in a while, please feel free to send me another email to check on my status. I don't bite! ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH] drm/nouveau: avoid a use-after-free when BO init fails
Reviewed-by: Lyude Paul
On Wed, 2020-12-02 at 19:02 -0500, Jeremy Cline wrote:
> nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code
> back to the caller. On failures, ttm_bo_init() invokes the provided
> destructor which should de-initialize and free the memory.
>
> Thus, when nouveau_bo_init() returns an error the gem object has already
> been released and the memory freed by nouveau_bo_del_ttm().
>
> Fixes: 019cbd4a4feb ("drm/nouveau: Initialize GEM object before TTM object")
> Cc: Thierry Reding
> Signed-off-by: Jeremy Cline
> ---
> drivers/gpu/drm/nouveau/nouveau_gem.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c
> b/drivers/gpu/drm/nouveau/nouveau_gem.c
> index 787d05eefd9c..d30157cc7169 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_gem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
> @@ -211,10 +211,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int
> align, uint32_t domain,
> }
>
> ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL);
> - if (ret) {
> - nouveau_bo_ref(NULL, );
> + if (ret)
> return ret;
> - }
>
> /* we restrict allowed domains on nv50+ to only the types
> * that were requested at creation time. not possibly on
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
on my status. I don't bite!
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Re: [PATCH v2] drm/mst: Enhance MST topology logging
t->vcpi.vcpi,
> + seq_printf(m, "%10d%10d%10d%10d%20s\n",
> + i,
> + port->port_num,
> + port->vcpi.vcpi,
> port->vcpi.num_slots,
> - (*name != 0) ? name : "Unknown");
> + (*name != 0) ? name : "Unknown");
> } else
> - seq_printf(m, "vcpi %d:unused\n", i);
> + seq_printf(m, "%6d - Unused\n", i);
> }
> + seq_printf(m, "\n*** Payload Info ***\n");
> + seq_printf(m, "| idx | state | start slot | # slots |\n");
> for (i = 0; i < mgr->max_payloads; i++) {
> - seq_printf(m, "payload %d: %d, %d, %d\n",
> + seq_printf(m, "%10d%10d%15d%10d\n",
> i,
> mgr->payloads[i].payload_state,
> mgr->payloads[i].start_slot,
> mgr->payloads[i].num_slots);
> -
> -
> }
> mutex_unlock(>payload_lock);
>
> + seq_printf(m, "\n*** DPCD Info ***\n");
> mutex_lock(>lock);
> if (mgr->mst_primary) {
> u8 buf[DP_PAYLOAD_TABLE_SIZE];
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
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[PATCH v2 20/20] drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*()
And finally, convert all of the code in drm_dp_mst_topology.c over to using
drm_err() and drm_dbg*(). Note that this refactor would have been a lot
more complicated to have tried writing a coccinelle script for, so this
whole thing was done by hand.
v2:
* Fix line-wrapping in drm_dp_mst_atomic_check_mstb_bw_limit()
Signed-off-by: Lyude Paul
Cc: Robert Foss
---
drivers/gpu/drm/drm_dp_mst_topology.c | 368 +-
1 file changed, 187 insertions(+), 181 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 74c420f5f204..b8c3a99a4119 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -286,7 +286,8 @@ static void drm_dp_encode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
*len = idx;
}
-static bool drm_dp_decode_sideband_msg_hdr(struct drm_dp_sideband_msg_hdr *hdr,
+static bool drm_dp_decode_sideband_msg_hdr(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_hdr *hdr,
u8 *buf, int buflen, u8 *hdrlen)
{
u8 crc4;
@@ -303,7 +304,7 @@ static bool drm_dp_decode_sideband_msg_hdr(struct
drm_dp_sideband_msg_hdr *hdr,
crc4 = drm_dp_msg_header_crc4(buf, (len * 2) - 1);
if ((crc4 & 0xf) != (buf[len - 1] & 0xf)) {
- DRM_DEBUG_KMS("crc4 mismatch 0x%x 0x%x\n", crc4, buf[len - 1]);
+ drm_dbg_kms(mgr->dev, "crc4 mismatch 0x%x 0x%x\n", crc4,
buf[len - 1]);
return false;
}
@@ -789,7 +790,8 @@ static bool drm_dp_sideband_append_payload(struct
drm_dp_sideband_msg_rx *msg,
return true;
}
-static bool drm_dp_sideband_parse_link_address(struct drm_dp_sideband_msg_rx
*raw,
+static bool drm_dp_sideband_parse_link_address(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
struct
drm_dp_sideband_msg_reply_body *repmsg)
{
int idx = 1;
@@ -1014,7 +1016,8 @@ drm_dp_sideband_parse_query_stream_enc_status(
return true;
}
-static bool drm_dp_sideband_parse_reply(struct drm_dp_sideband_msg_rx *raw,
+static bool drm_dp_sideband_parse_reply(const struct drm_dp_mst_topology_mgr
*mgr,
+ struct drm_dp_sideband_msg_rx *raw,
struct drm_dp_sideband_msg_reply_body
*msg)
{
memset(msg, 0, sizeof(*msg));
@@ -1030,7 +1033,7 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
switch (msg->req_type) {
case DP_LINK_ADDRESS:
- return drm_dp_sideband_parse_link_address(raw, msg);
+ return drm_dp_sideband_parse_link_address(mgr, raw, msg);
case DP_QUERY_PAYLOAD:
return drm_dp_sideband_parse_query_payload_ack(raw, msg);
case DP_REMOTE_DPCD_READ:
@@ -1053,14 +1056,16 @@ static bool drm_dp_sideband_parse_reply(struct
drm_dp_sideband_msg_rx *raw,
case DP_QUERY_STREAM_ENC_STATUS:
return drm_dp_sideband_parse_query_stream_enc_status(raw, msg);
default:
- DRM_ERROR("Got unknown reply 0x%02x (%s)\n", msg->req_type,
- drm_dp_mst_req_type_str(msg->req_type));
+ drm_err(mgr->dev, "Got unknown reply 0x%02x (%s)\n",
+ msg->req_type, drm_dp_mst_req_type_str(msg->req_type));
return false;
}
}
-static bool drm_dp_sideband_parse_connection_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool
+drm_dp_sideband_parse_connection_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_sideband_msg_rx
*raw,
+ struct
drm_dp_sideband_msg_req_body *msg)
{
int idx = 1;
@@ -1082,12 +1087,14 @@ static bool
drm_dp_sideband_parse_connection_status_notify(struct drm_dp_sideban
idx++;
return true;
fail_len:
- DRM_DEBUG_KMS("connection status reply parse length fail %d %d\n", idx,
raw->curlen);
+ drm_dbg_kms(mgr->dev, "connection status reply parse length fail %d
%d\n",
+ idx, raw->curlen);
return false;
}
-static bool drm_dp_sideband_parse_resource_status_notify(struct
drm_dp_sideband_msg_rx *raw,
- struct
drm_dp_sideband_msg_req_body *msg)
+static bool drm_dp_sideband_parse_resource_status_notify(const struct
drm_dp_mst_topology_mgr *mgr,
+struct
drm_dp_sideband_msg_rx *raw,
[PATCH v2 18/20] drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms()
Next step in the conversion, move everything in drm_dp_dual_mode_helper.c
over to using drm_err() and drm_dbg_kms(). This was done using the
following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(dev, expr);
)
And correcting the indentation of the resulting code by hand.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 45 +++
1 file changed, 21 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index dbf9b1fdec63..9faf49354cab 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -27,6 +27,7 @@
#include
#include
+#include
#include
#include
@@ -202,8 +203,8 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_HDMI_ID,
hdmi_id, sizeof(hdmi_id));
- DRM_DEBUG_KMS("DP dual mode HDMI ID: %*pE (err %zd)\n",
- ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
+ drm_dbg_kms(dev, "DP dual mode HDMI ID: %*pE (err %zd)\n",
+ ret ? 0 : (int)sizeof(hdmi_id), hdmi_id, ret);
if (ret)
return DRM_DP_DUAL_MODE_UNKNOWN;
@@ -221,8 +222,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
*/
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_ADAPTOR_ID,
_id, sizeof(adaptor_id));
- DRM_DEBUG_KMS("DP dual mode adaptor ID: %02x (err %zd)\n",
- adaptor_id, ret);
+ drm_dbg_kms(dev, "DP dual mode adaptor ID: %02x (err %zd)\n",
adaptor_id, ret);
if (ret == 0) {
if (is_lspcon_adaptor(hdmi_id, adaptor_id))
return DRM_DP_DUAL_MODE_LSPCON;
@@ -238,8 +238,7 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const
struct drm_device *dev,
* that we may have misdetected the type.
*/
if (!is_type1_adaptor(adaptor_id) && adaptor_id != hdmi_id[0])
- DRM_ERROR("Unexpected DP dual mode adaptor ID %02x\n",
- adaptor_id);
+ drm_err(dev, "Unexpected DP dual mode adaptor ID
%02x\n", adaptor_id);
}
@@ -286,7 +285,7 @@ int drm_dp_dual_mode_max_tmds_clock(const struct drm_device
*dev, enum drm_dp_du
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_MAX_TMDS_CLOCK,
_tmds_clock, sizeof(max_tmds_clock));
if (ret || max_tmds_clock == 0x00 || max_tmds_clock == 0xff) {
- DRM_DEBUG_KMS("Failed to query max TMDS clock\n");
+ drm_dbg_kms(dev, "Failed to query max TMDS clock\n");
return 165000;
}
@@ -326,7 +325,7 @@ int drm_dp_dual_mode_get_tmds_output(const struct
drm_device *dev,
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to query state of TMDS output buffers\n");
+ drm_dbg_kms(dev, "Failed to query state of TMDS output
buffers\n");
return ret;
}
@@ -372,18 +371,17 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
ret = drm_dp_dual_mode_write(adapter, DP_DUAL_MODE_TMDS_OEN,
_oen, sizeof(tmds_oen));
if (ret) {
- DRM_DEBUG_KMS("Failed to %s TMDS output buffers (%d
attempts)\n",
- enable ? "enable" : "disable",
- retry + 1);
+ drm_dbg_kms(dev, "Failed to %s TMDS output buffers (%d
attempts)\n",
+ enable ? "enable" : "disable", retry + 1);
return ret;
}
ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_TMDS_OEN,
, sizeof(tmp));
if (ret) {
- DRM_DEBUG_KMS("I2C read failed during TMDS output
buffer %s (%d attempts)\n",
- enable ? "enabling" : "disabling",
- retry + 1);
+ drm_dbg_kms(dev,
+ "I2C read failed during TMDS output buffer
%s (%d attempts)\n",
+ enable ? "enabling"
[PATCH v2 19/20] drm/dp_mst: Drop DRM_ERROR() on kzalloc() fail in drm_dp_mst_handle_up_req()
Checkpatch was complaining about this - there's no need for us to print
errors when kzalloc() fails, as kzalloc() will already WARN for us. So,
let's fix that before converting things to make checkpatch happy.
Signed-off-by: Lyude Paul
Cc: Robert Foss
---
drivers/gpu/drm/drm_dp_mst_topology.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index ec2285595c33..74c420f5f204 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -4113,10 +4113,9 @@ static int drm_dp_mst_handle_up_req(struct
drm_dp_mst_topology_mgr *mgr)
return 0;
up_req = kzalloc(sizeof(*up_req), GFP_KERNEL);
- if (!up_req) {
- DRM_ERROR("Not enough memory to process MST up req\n");
+ if (!up_req)
return -ENOMEM;
- }
+
INIT_LIST_HEAD(_req->next);
drm_dp_sideband_parse_req(>up_req_recv, _req->msg);
--
2.30.2
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[PATCH v2 16/20] drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw()
Since this is one of the few functions in drm_dp_mst_topology.c that
doesn't have any way of getting access to a drm_device, let's pass the
drm_dp_mst_topology_mgr down to this function so that it can use
drm_dbg_kms().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_mst_topology.c | 7 +--
drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++-
include/drm/drm_dp_mst_helper.h | 3 ++-
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 1a7a8b085de4..ec2285595c33 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -3638,6 +3638,7 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
/**
* drm_dp_get_vc_payload_bw - get the VC payload BW for an MST link
+ * @mgr: The _dp_mst_topology_mgr to use
* @link_rate: link rate in 10kbits/s units
* @link_lane_count: lane count
*
@@ -3646,7 +3647,8 @@ static int drm_dp_send_up_ack_reply(struct
drm_dp_mst_topology_mgr *mgr,
* convert the number of PBNs required for a given stream to the number of
* timeslots this stream requires in each MTP.
*/
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count)
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count)
{
if (link_rate == 0 || link_lane_count == 0)
DRM_DEBUG_KMS("invalid link rate/lane count: (%d / %d)\n",
@@ -3711,7 +3713,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct
drm_dp_mst_topology_mgr *mgr, bool ms
goto out_unlock;
}
- mgr->pbn_div =
drm_dp_get_vc_payload_bw(drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
+ mgr->pbn_div = drm_dp_get_vc_payload_bw(mgr,
+
drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
mgr->dpcd[2] &
DP_MAX_LANE_COUNT_MASK);
if (mgr->pbn_div == 0) {
ret = -EINVAL;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 2daa3f67791e..860381d68d9d 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -70,7 +70,8 @@ static int intel_dp_mst_compute_link_config(struct
intel_encoder *encoder,
slots = drm_dp_atomic_find_vcpi_slots(state, _dp->mst_mgr,
connector->port,
crtc_state->pbn,
-
drm_dp_get_vc_payload_bw(crtc_state->port_clock,
+
drm_dp_get_vc_payload_bw(_dp->mst_mgr,
+
crtc_state->port_clock,
crtc_state->lane_count));
if (slots == -EDEADLK)
return slots;
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index bd1c39907b92..20dc705642bd 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -783,7 +783,8 @@ drm_dp_mst_detect_port(struct drm_connector *connector,
struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct
drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
-int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count);
+int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
+int link_rate, int link_lane_count);
int drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc);
--
2.30.2
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[PATCH v2 17/20] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*()
Now that we've added a back-pointer to drm_device to drm_dp_aux, made
drm_dp_aux available to any functions in drm_dp_helper.c which need to
print to the kernel log, and ensured all of our logging uses a consistent
format, let's do the final step of the conversion and actually move
everything over to using drm_err() and drm_dbg_*().
This was done by using the following cocci script:
@@
expression list expr;
@@
(
- DRM_DEBUG_KMS(expr);
+ drm_dbg_kms(aux->drm_dev, expr);
|
- DRM_DEBUG_DP(expr);
+ drm_dbg_dp(aux->drm_dev, expr);
|
- DRM_DEBUG_ATOMIC(expr);
+ drm_dbg_atomic(aux->drm_dev, expr);
|
- DRM_DEBUG_KMS_RATELIMITED(expr);
+ drm_dbg_kms_ratelimited(aux->drm_dev, expr);
|
- DRM_ERROR(expr);
+ drm_err(aux->drm_dev, expr);
)
Followed by correcting the resulting line-wrapping in the results by hand.
v2:
* Fix indenting in drm_dp_dump_access
Signed-off-by: Lyude Paul
Cc: Robert Foss
---
drivers/gpu/drm/drm_dp_helper.c | 121
1 file changed, 59 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 54e19d7b9c51..4940db0bcaae 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
- aux->name, rd_interval);
+ drm_dbg_kms(aux->drm_dev, "%s: AUX interval %lu, out of range
(max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -220,11 +220,11 @@ drm_dp_dump_access(const struct drm_dp_aux *aux,
const char *arrow = request == DP_AUX_NATIVE_READ ? "->" : "<-";
if (ret > 0)
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
-aux->name, offset, arrow, ret, min(ret, 20),
buffer);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d) %*ph\n",
+ aux->name, offset, arrow, ret, min(ret, 20), buffer);
else
- DRM_DEBUG_DP("%s: 0x%05x AUX %s (ret=%3d)\n",
-aux->name, offset, arrow, ret);
+ drm_dbg_dp(aux->drm_dev, "%s: 0x%05x AUX %s (ret=%3d)\n",
+ aux->name, offset, arrow, ret);
}
/**
@@ -287,8 +287,8 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8
request,
err = ret;
}
- DRM_DEBUG_KMS("%s: Too many retries, giving up. First error: %d\n",
- aux->name, err);
+ drm_dbg_kms(aux->drm_dev, "%s: Too many retries, giving up. First
error: %d\n",
+ aux->name, err);
ret = err;
unlock:
@@ -524,44 +524,44 @@ bool drm_dp_send_real_edid_checksum(struct drm_dp_aux
*aux,
if (drm_dp_dpcd_read(aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
_test_req, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_DEVICE_SERVICE_IRQ_VECTOR);
return false;
}
auto_test_req &= DP_AUTOMATED_TEST_REQUEST;
if (drm_dp_dpcd_read(aux, DP_TEST_REQUEST, _edid_read, 1) < 1) {
- DRM_ERROR("%s: DPCD failed read at register 0x%x\n",
- aux->name, DP_TEST_REQUEST);
+ drm_err(aux->drm_dev, "%s: DPCD failed read at register 0x%x\n",
+ aux->name, DP_TEST_REQUEST);
return false;
}
link_edid_read &= DP_TEST_LINK_EDID_READ;
if (!auto_test_req || !link_edid_read) {
- DRM_DEBUG_KMS("%s: Source DUT does not support
TEST_EDID_READ\n",
-
[PATCH v2 14/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output()
Another function to pass drm_device * down to so we can start using the
drm_dbg_*() in the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 4a26b3e1f78f..c9c2952bcad2 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -296,6 +296,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
/**
* drm_dp_dual_mode_get_tmds_output - Get the state of the TMDS output buffers
in the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enabled: current state of the TMDS output buffers
@@ -310,8 +311,8 @@ EXPORT_SYMBOL(drm_dp_dual_mode_max_tmds_clock);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
-struct i2c_adapter *adapter,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev,
+enum drm_dp_dual_mode_type type, struct
i2c_adapter *adapter,
bool *enabled)
{
uint8_t tmds_oen;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index aabf9c951380..01eec9ff5962 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -108,7 +108,7 @@ enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
-int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
--
2.30.2
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[PATCH v2 15/20] drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode()
So that we can start using drm_dbg_*() throughout the DRM DP helpers.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 8 +---
drivers/gpu/drm/i915/display/intel_lspcon.c | 12 +++-
include/drm/drm_dp_dual_mode_helper.h | 4 ++--
3 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index c9c2952bcad2..dbf9b1fdec63 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -430,6 +430,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
/**
* drm_lspcon_get_mode: Get LSPCON's current mode of operation by
* reading offset (0x80, 0x41)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: current lspcon mode of operation output variable
*
@@ -437,7 +438,7 @@ EXPORT_SYMBOL(drm_dp_get_dual_mode_type_name);
* 0 on success, sets the current_mode value to appropriate mode
* -error on failure
*/
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *mode)
{
u8 data;
@@ -477,13 +478,14 @@ EXPORT_SYMBOL(drm_lspcon_get_mode);
/**
* drm_lspcon_set_mode: Change LSPCON's mode of operation by
* writing offset (0x80, 0x40)
+ * @dev: _device to use
* @adapter: I2C-over-aux adapter
* @mode: required mode of operation
*
* Returns:
* 0 on success, -error on failure/timeout
*/
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode mode)
{
u8 data = 0;
@@ -508,7 +510,7 @@ int drm_lspcon_set_mode(struct i2c_adapter *adapter,
* so wait and retry until time out or done.
*/
do {
- ret = drm_lspcon_get_mode(adapter, _mode);
+ ret = drm_lspcon_get_mode(dev, adapter, _mode);
if (ret) {
DRM_ERROR("can't confirm LSPCON mode change\n");
return ret;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index ca25044e7d1b..ec0048024746 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -139,10 +139,11 @@ void lspcon_detect_hdr_capability(struct intel_lspcon
*lspcon)
static enum drm_lspcon_mode lspcon_get_current_mode(struct intel_lspcon
*lspcon)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- if (drm_lspcon_get_mode(adapter, _mode)) {
+ if (drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter, _mode))
{
DRM_DEBUG_KMS("Error reading LSPCON mode\n");
return DRM_LSPCON_MODE_INVALID;
}
@@ -175,11 +176,12 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct
intel_lspcon *lspcon,
static int lspcon_change_mode(struct intel_lspcon *lspcon,
enum drm_lspcon_mode mode)
{
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
int err;
enum drm_lspcon_mode current_mode;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct i2c_adapter *adapter = _dp->aux.ddc;
- err = drm_lspcon_get_mode(adapter, _mode);
+ err = drm_lspcon_get_mode(intel_dp->aux.drm_dev, adapter,
_mode);
if (err) {
DRM_ERROR("Error reading LSPCON mode\n");
return err;
@@ -190,7 +192,7 @@ static int lspcon_change_mode(struct intel_lspcon *lspcon,
return 0;
}
- err = drm_lspcon_set_mode(adapter, mode);
+ err = drm_lspcon_set_mode(intel_dp->aux.drm_dev, adapter, mode);
if (err < 0) {
DRM_ERROR("LSPCON mode change failed\n");
return err;
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 01eec9ff5962..7ee482265087 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -114,8 +114,8 @@ int drm_dp_dual_mode_set_tmds_output(const struct
drm_device *dev, enum drm_dp_d
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
-int drm_lspcon_get_mode(struct i2c_adapter *adapter,
+int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter
*adapter,
enum drm_lspcon_mode *current_mode);
-int drm_lspcon_set_mode(struct i2c_adapter *adapter,
+int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter
[PATCH v2 13/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock()
Another function we need to pass drm_device down to in order to start using
drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index a63d7de85309..4a26b3e1f78f 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -252,6 +252,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
/**
* drm_dp_dual_mode_max_tmds_clock - Max TMDS clock for DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
*
@@ -265,7 +266,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_detect);
* Returns:
* Maximum supported TMDS clock rate for the DP dual mode adaptor in kHz.
*/
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter)
{
uint8_t max_tmds_clock;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index fdc43f545cad..9c172dd6fb5b 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2255,7 +2255,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
hdmi->dp_dual_mode.type = type;
hdmi->dp_dual_mode.max_tmds_clock =
- drm_dp_dual_mode_max_tmds_clock(type, adapter);
+ drm_dp_dual_mode_max_tmds_clock(_priv->drm, type, adapter);
drm_dbg_kms(_priv->drm,
"DP dual mode adaptor (%s) detected (max TMDS clock: %d
kHz)\n",
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 8cb0dcd98a99..aabf9c951380 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -106,7 +106,7 @@ enum drm_dp_dual_mode_type {
enum drm_dp_dual_mode_type
drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
-int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
--
2.30.2
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[PATCH v2 12/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output()
Another function that we'll need to pass a drm_device (and not drm_dp_aux)
down to so that we can move over to using drm_dbg_*().
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +--
include/drm/drm_dp_dual_mode_helper.h | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 9ee75c568c37..a63d7de85309 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -336,6 +336,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
/**
* drm_dp_dual_mode_set_tmds_output - Enable/disable TMDS output buffers in
the DP dual mode adaptor
+ * @dev: _device to use
* @type: DP dual mode adaptor type
* @adapter: I2C adapter for the DDC bus
* @enable: enable (as opposed to disable) the TMDS output buffers
@@ -349,7 +350,7 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
* Returns:
* 0 on success, negative error code on failure
*/
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable)
{
uint8_t tmds_oen = enable ? 0 : DP_DUAL_MODE_TMDS_DISABLE;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index de092f6584c1..fdc43f545cad 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1251,8 +1251,7 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi
*hdmi, bool enable)
drm_dbg_kms(_priv->drm, "%s DP dual mode adaptor TMDS output\n",
enable ? "Enabling" : "Disabling");
- drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type,
-adapter, enable);
+ drm_dp_dual_mode_set_tmds_output(_priv->drm,
hdmi->dp_dual_mode.type, adapter, enable);
}
static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 23ce849152f3..8cb0dcd98a99 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -110,7 +110,7 @@ int drm_dp_dual_mode_max_tmds_clock(enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool
*enabled);
-int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type,
+int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum
drm_dp_dual_mode_type type,
struct i2c_adapter *adapter, bool enable);
const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);
--
2.30.2
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[PATCH v2 09/20] drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay()
So that we can start using drm_dbg_*() for
drm_dp_link_train_channel_eq_delay() and
drm_dp_lttpr_link_train_channel_eq_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c| 14 +-
.../gpu/drm/i915/display/intel_dp_link_training.c | 4 ++--
drivers/gpu/drm/msm/dp/dp_ctrl.c | 4 ++--
drivers/gpu/drm/msm/edp/edp_ctrl.c | 4 ++--
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h| 6 --
8 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 4468f9d6b4dd..59ce6f620fdc 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -676,7 +676,7 @@ amdgpu_atombios_dp_link_train_ce(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
channel_eq = false;
while (1) {
- drm_dp_link_train_channel_eq_delay(dp_info->dpcd);
+ drm_dp_link_train_channel_eq_delay(dp_info->aux, dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 4462624daefc..f0029b8cb558 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -151,7 +151,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
}
EXPORT_SYMBOL(drm_dp_link_train_clock_recovery_delay);
-static void __drm_dp_link_train_channel_eq_delay(unsigned long rd_interval)
+static void __drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+unsigned long rd_interval)
{
if (rd_interval > 4)
DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
@@ -165,9 +166,11 @@ static void __drm_dp_link_train_channel_eq_delay(unsigned
long rd_interval)
usleep_range(rd_interval, rd_interval * 2);
}
-void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
- __drm_dp_link_train_channel_eq_delay(dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
+ __drm_dp_link_train_channel_eq_delay(aux,
+dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK);
}
EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay);
@@ -183,13 +186,14 @@ static u8 dp_lttpr_phy_cap(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE], int r)
return phy_cap[r - DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1];
}
-void drm_dp_lttpr_link_train_channel_eq_delay(const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
+void drm_dp_lttpr_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
+ const u8
phy_cap[DP_LTTPR_PHY_CAP_SIZE])
{
u8 interval = dp_lttpr_phy_cap(phy_cap,
DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1) &
DP_TRAINING_AUX_RD_MASK;
- __drm_dp_link_train_channel_eq_delay(interval);
+ __drm_dp_link_train_channel_eq_delay(aux, interval);
}
EXPORT_SYMBOL(drm_dp_lttpr_link_train_channel_eq_delay);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index f543b494f052..dd7423d3c562 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -665,11 +665,11 @@ intel_dp_link_training_channel_equalization_delay(struct
intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX) {
- drm_dp_link_train_channel_eq_delay(intel_dp->dpcd);
+ drm_dp_link_train_channel_eq_delay(_dp->aux,
intel_dp->dpcd);
} else {
const u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
- drm_dp_lttpr_link_train_channel_eq_delay(phy_caps);
+ drm_dp_lttpr_link_train_channel_eq_delay(_dp->aux,
phy_caps);
}
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 264a9eae87d3..2cebd17a7289 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1184,7 +1184,7 @@ static int dp_ctrl_link_lane_down_shift(struct
dp_ctrl_private *ctrl)
static void dp_ctrl_clear_training_pattern(struct dp_ctrl_private *ctrl)
{
d
[PATCH v2 11/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect()
Since we're about to be using drm_dbg_*() throughout the DP helpers, we'll
need to be able to access the DRM device in the dual mode DP helpers as
well. Note however that since drm_dp_dual_mode_detect() can be called with
DDC adapters that aren't part of a drm_dp_aux struct, we need to pass down
the drm_device to these functions instead of using drm_dp_aux.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 4 +++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
drivers/gpu/drm/i915/display/intel_lspcon.c | 5 +++--
include/drm/drm_dp_dual_mode_helper.h | 4 +++-
4 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
index 1c9ea9f7fdaf..9ee75c568c37 100644
--- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c
@@ -165,6 +165,7 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
/**
* drm_dp_dual_mode_detect - Identify the DP dual mode adaptor
+ * @dev: _device to use
* @adapter: I2C adapter for the DDC bus
*
* Attempt to identify the type of the DP dual mode adaptor used.
@@ -178,7 +179,8 @@ static bool is_lspcon_adaptor(const char
hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN],
* Returns:
* The type of the DP dual mode adaptor used
*/
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter *adapter)
+enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const struct drm_device
*dev,
+ struct i2c_adapter *adapter)
{
char hdmi_id[DP_DUAL_MODE_HDMI_ID_LEN] = {};
uint8_t adaptor_id = 0x00;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index d69f0a6dc26d..de092f6584c1 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2223,7 +2223,7 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector
*connector, bool has_edid)
enum port port = hdmi_to_dig_port(hdmi)->base.port;
struct i2c_adapter *adapter =
intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
- enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter);
+ enum drm_dp_dual_mode_type type =
drm_dp_dual_mode_detect(_priv->drm, adapter);
/*
* Type 1 DVI adaptors are not required to implement any
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index e4ff533e3a69..ca25044e7d1b 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -221,7 +221,8 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
{
int retry;
enum drm_dp_dual_mode_type adaptor_type;
- struct i2c_adapter *adapter = _to_intel_dp(lspcon)->aux.ddc;
+ struct intel_dp *intel_dp = lspcon_to_intel_dp(lspcon);
+ struct i2c_adapter *adapter = _dp->aux.ddc;
enum drm_lspcon_mode expected_mode;
expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
@@ -232,7 +233,7 @@ static bool lspcon_probe(struct intel_lspcon *lspcon)
if (retry)
usleep_range(500, 1000);
- adaptor_type = drm_dp_dual_mode_detect(adapter);
+ adaptor_type = drm_dp_dual_mode_detect(intel_dp->aux.drm_dev,
adapter);
if (adaptor_type == DRM_DP_DUAL_MODE_LSPCON)
break;
}
diff --git a/include/drm/drm_dp_dual_mode_helper.h
b/include/drm/drm_dp_dual_mode_helper.h
index 4c42db81fcb4..23ce849152f3 100644
--- a/include/drm/drm_dp_dual_mode_helper.h
+++ b/include/drm/drm_dp_dual_mode_helper.h
@@ -62,6 +62,7 @@
#define DP_DUAL_MODE_LSPCON_CURRENT_MODE 0x41
#define DP_DUAL_MODE_LSPCON_MODE_PCON 0x1
+struct drm_device;
struct i2c_adapter;
ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter,
@@ -103,7 +104,8 @@ enum drm_dp_dual_mode_type {
DRM_DP_DUAL_MODE_LSPCON,
};
-enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter
*adapter);
+enum drm_dp_dual_mode_type
+drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter
*adapter);
int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type,
struct i2c_adapter *adapter);
int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type,
--
2.30.2
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[PATCH v2 10/20] drm/dp: Always print aux channel name in logs
Since we're about to convert everything in drm_dp_helper.c over to using
drm_dbg_*(), let's also make our logging more consistent in drm_dp_helper.c
while we're at it to ensure that we always print the name of the AUX
channel in question.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_helper.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index f0029b8cb558..54e19d7b9c51 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -139,8 +139,8 @@ void drm_dp_link_train_clock_recovery_delay(const struct
drm_dp_aux *aux,
DP_TRAINING_AUX_RD_MASK;
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
rd_interval = 100;
@@ -155,8 +155,8 @@ static void __drm_dp_link_train_channel_eq_delay(const
struct drm_dp_aux *aux,
unsigned long rd_interval)
{
if (rd_interval > 4)
- DRM_DEBUG_KMS("AUX interval %lu, out of range (max 4)\n",
- rd_interval);
+ DRM_DEBUG_KMS("%s: AUX interval %lu, out of range (max 4)\n",
+ aux->name, rd_interval);
if (rd_interval == 0)
rd_interval = 400;
@@ -2774,7 +2774,7 @@ int drm_dp_pcon_frl_enable(struct drm_dp_aux *aux)
if (ret < 0)
return ret;
if (!(buf & DP_PCON_ENABLE_SOURCE_CTL_MODE)) {
- DRM_DEBUG_KMS("PCON in Autonomous mode, can't enable FRL\n");
+ DRM_DEBUG_KMS("%s: PCON in Autonomous mode, can't enable
FRL\n", aux->name);
return -EINVAL;
}
buf |= DP_PCON_ENABLE_HDMI_LINK;
@@ -2869,7 +2869,8 @@ void drm_dp_pcon_hdmi_frl_link_error_count(struct
drm_dp_aux *aux,
num_error = 0;
}
- DRM_ERROR("More than %d errors since the last read for lane
%d", num_error, i);
+ DRM_ERROR("%s: More than %d errors since the last read for lane
%d",
+ aux->name, num_error, i);
}
}
EXPORT_SYMBOL(drm_dp_pcon_hdmi_frl_link_error_count);
--
2.30.2
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[PATCH v2 07/20] drm/print: Fixup DRM_DEBUG_KMS_RATELIMITED()
Since we're about to move drm_dp_helper.c over to drm_dbg_*(), we'll want
to make sure that we can also add ratelimited versions of these macros in
order to retain some of the previous debugging output behavior we had.
However, as I was preparing to do this I noticed that the current
rate limited macros we have are kind of bogus. It looks like when I wrote
these, I didn't notice that we'd always be calling __ratelimit() even if
the debugging message we'd be printing would normally be filtered out due
to the relevant DRM debugging category being disabled.
So, let's fix this by making sure to check drm_debug_enabled() in our
ratelimited macros before calling __ratelimit(), and start using
drm_dev_printk() in order to print debugging messages since that will save
us from doing a redundant drm_debug_enabled() check. And while we're at it,
let's move the code for this into another macro that we can reuse for
defining new ratelimited DRM debug macros more easily.
v2:
* Make sure to use tabs where possible in __DRM_DEFINE_DBG_RATELIMITED()
Signed-off-by: Lyude Paul
Cc: Robert Foss
---
include/drm/drm_print.h | 20
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index f32d179e139d..a3c58c941bdc 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -524,16 +524,20 @@ void __drm_err(const char *format, ...);
#define DRM_DEBUG_DP(fmt, ...) \
__drm_dbg(DRM_UT_DP, fmt, ## __VA_ARGS__)
-
-#define DRM_DEBUG_KMS_RATELIMITED(fmt, ...)\
-({ \
- static DEFINE_RATELIMIT_STATE(_rs, \
- DEFAULT_RATELIMIT_INTERVAL, \
- DEFAULT_RATELIMIT_BURST); \
- if (__ratelimit(&_rs)) \
- drm_dev_dbg(NULL, DRM_UT_KMS, fmt, ##__VA_ARGS__); \
+#define __DRM_DEFINE_DBG_RATELIMITED(category, drm, fmt, ...)
\
+({
\
+ static DEFINE_RATELIMIT_STATE(rs_, DEFAULT_RATELIMIT_INTERVAL,
DEFAULT_RATELIMIT_BURST);\
+ const struct drm_device *drm_ = (drm);
\
+
\
+ if (drm_debug_enabled(DRM_UT_ ## category) && __ratelimit(_))
\
+ drm_dev_printk(drm_ ? drm_->dev : NULL, KERN_DEBUG, fmt, ##
__VA_ARGS__); \
})
+#define drm_dbg_kms_ratelimited(drm, fmt, ...) \
+ __DRM_DEFINE_DBG_RATELIMITED(KMS, drm, fmt, ## __VA_ARGS__)
+
+#define DRM_DEBUG_KMS_RATELIMITED(fmt, ...) drm_dbg_kms_ratelimited(NULL, fmt,
## __VA_ARGS__)
+
/*
* struct drm_device based WARNs
*
--
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[PATCH v2 06/20] drm/dp: Clarify DP AUX registration time
The docs we had for drm_dp_aux_init() and drm_dp_aux_register() were mostly
correct, except for the fact that they made the assumption that all AUX
devices were grandchildren of their respective DRM devices. This is the
case for most normal GPUs, but is almost never the case with SoCs and
display bridges. So, let's fix this documentation to clarify when the right
time to use drm_dp_aux_init() or drm_dp_aux_register() is.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/drm_dp_helper.c | 44 +++--
1 file changed, 31 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index eedbb48815b7..3fa858b9691c 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1728,10 +1728,17 @@ EXPORT_SYMBOL(drm_dp_remote_aux_init);
* drm_dp_aux_init() - minimally initialise an aux channel
* @aux: DisplayPort AUX channel
*
- * If you need to use the drm_dp_aux's i2c adapter prior to registering it
- * with the outside world, call drm_dp_aux_init() first. You must still
- * call drm_dp_aux_register() once the connector has been registered to
- * allow userspace access to the auxiliary DP channel.
+ * If you need to use the drm_dp_aux's i2c adapter prior to registering it with
+ * the outside world, call drm_dp_aux_init() first. For drivers which are
+ * grandparents to their AUX adapters (e.g. the AUX adapter is parented by a
+ * _connector), you must still call drm_dp_aux_register() once the
connector
+ * has been registered to allow userspace access to the auxiliary DP channel.
+ * Likewise, for such drivers you should also assign _dp_aux.drm_dev as
+ * early as possible so that the _device that corresponds to the AUX
adapter
+ * may be mentioned in debugging output from the DRM DP helpers.
+ *
+ * For devices which use a separate platform device for their AUX adapters,
this
+ * may be called as early as required by the driver.
*/
void drm_dp_aux_init(struct drm_dp_aux *aux)
{
@@ -1751,15 +1758,26 @@ EXPORT_SYMBOL(drm_dp_aux_init);
* drm_dp_aux_register() - initialise and register aux channel
* @aux: DisplayPort AUX channel
*
- * Automatically calls drm_dp_aux_init() if this hasn't been done yet.
- * This should only be called when the underlying drm_connector is
- * initialiazed already. Therefore the best place to call this is from
- * _connector_funcs.late_register. Not that drivers which don't follow this
- * will Oops when CONFIG_DRM_DP_AUX_CHARDEV is enabled.
- *
- * Drivers which need to use the aux channel before that point (e.g. at driver
- * load time, before drm_dev_register() has been called) need to call
- * drm_dp_aux_init().
+ * Automatically calls drm_dp_aux_init() if this hasn't been done yet. This
+ * should only be called once the parent of @aux, _dp_aux.dev, is
+ * initialized. For devices which are grandparents of their AUX channels,
+ * _dp_aux.dev will typically be the _connector which
+ * corresponds to @aux. For these devices, it's advised to call
+ * drm_dp_aux_register() in _connector_funcs.late_register, and likewise to
+ * call drm_dp_aux_unregister() in _connector_funcs.early_unregister.
+ * Functions which don't follow this will likely Oops when
+ * %CONFIG_DRM_DP_AUX_CHARDEV is enabled.
+ *
+ * For devices where the AUX channel is a device that exists independently of
+ * the _device that uses it, such as SoCs and bridge devices, it is
+ * recommended to call drm_dp_aux_register() after a _device has been
+ * assigned to _dp_aux.drm_dev, and likewise to call
drm_dp_aux_unregister()
+ * once the _device should no longer be associated with the AUX channel
+ * (e.g. on bridge detach).
+ *
+ * Drivers which need to use the aux channel before either of the two points
+ * mentioned above need to call drm_dp_aux_init() in order to use the AUX
+ * channel before registration.
*
* Returns 0 on success or a negative error code on failure.
*/
--
2.30.2
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[PATCH v2 08/20] drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay()
So that we can start using drm_dbg_*() in
drm_dp_link_train_clock_recovery_delay().
Signed-off-by: Lyude Paul
Reviewed-by: Laurent Pinchart
Reviewed-by: Rodrigo Vivi
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 2 +-
drivers/gpu/drm/drm_dp_helper.c | 3 ++-
drivers/gpu/drm/i915/display/intel_dp_link_training.c | 2 +-
drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 +-
drivers/gpu/drm/msm/edp/edp_ctrl.c| 2 +-
drivers/gpu/drm/radeon/atombios_dp.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
include/drm/drm_dp_helper.h | 4 +++-
8 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 6d35da65e09f..4468f9d6b4dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -611,7 +611,7 @@ amdgpu_atombios_dp_link_train_cr(struct
amdgpu_atombios_dp_link_train_info *dp_i
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_status) <= 0) {
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 3fa858b9691c..4462624daefc 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -132,7 +132,8 @@ u8 drm_dp_get_adjust_request_post_cursor(const u8
link_status[DP_LINK_STATUS_SIZ
}
EXPORT_SYMBOL(drm_dp_get_adjust_request_post_cursor);
-void drm_dp_link_train_clock_recovery_delay(const u8
dpcd[DP_RECEIVER_CAP_SIZE])
+void drm_dp_link_train_clock_recovery_delay(const struct drm_dp_aux *aux,
+ const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
unsigned long rd_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
DP_TRAINING_AUX_RD_MASK;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 5e9c3c74310c..f543b494f052 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -513,7 +513,7 @@ static void
intel_dp_link_training_clock_recovery_delay(struct intel_dp *intel_d
enum drm_dp_phy dp_phy)
{
if (dp_phy == DP_PHY_DPRX)
- drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd);
+ drm_dp_link_train_clock_recovery_delay(_dp->aux,
intel_dp->dpcd);
else
drm_dp_lttpr_link_train_clock_recovery_delay();
}
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 1390f3547fde..264a9eae87d3 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1103,7 +1103,7 @@ static int dp_ctrl_link_train_1(struct dp_ctrl_private
*ctrl,
tries = 0;
old_v_level = ctrl->link->phy_params.v_level;
for (tries = 0; tries < maximum_retries; tries++) {
- drm_dp_link_train_clock_recovery_delay(ctrl->panel->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->aux,
ctrl->panel->dpcd);
ret = dp_ctrl_read_link_status(ctrl, link_status);
if (ret)
diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c
b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 57af3d8b6699..6501598448b4 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -608,7 +608,7 @@ static int edp_start_link_train_1(struct edp_ctrl *ctrl)
tries = 0;
old_v_level = ctrl->v_level;
while (1) {
- drm_dp_link_train_clock_recovery_delay(ctrl->dpcd);
+ drm_dp_link_train_clock_recovery_delay(ctrl->drm_aux,
ctrl->dpcd);
rlen = drm_dp_dpcd_read_link_status(ctrl->drm_aux, link_status);
if (rlen < DP_LINK_STATUS_SIZE) {
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c
b/drivers/gpu/drm/radeon/atombios_dp.c
index c50c504bad50..299b9d8da376 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -680,7 +680,7 @@ static int radeon_dp_link_train_cr(struct
radeon_dp_link_train_info *dp_info)
dp_info->tries = 0;
voltage = 0xff;
while (1) {
- drm_dp_link_train_clock_recovery_delay(dp_info->dpcd);
+ drm_dp_link_train_clock_recovery_delay(dp_info->aux,
dp_info->dpcd);
if (drm_dp_dpcd_read_link_status(dp_info->aux,
dp_info->link_st
[PATCH v2 05/20] drm/dp: Add backpointer to drm_device in drm_dp_aux
This is something that we've wanted for a while now: the ability to
actually look up the respective drm_device for a given drm_dp_aux struct.
This will also allow us to transition over to using the drm_dbg_*() helpers
for debug message printing, as we'll finally have a drm_device to reference
for doing so.
Note that there is one limitation with this - because some DP AUX adapters
exist as platform devices which are initialized independently of their
respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be
non-NULL until drm_dp_aux_register() has been called. We make sure to point
this out in the documentation for struct drm_dp_aux.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 1 +
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 1 +
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1 +
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 1 +
drivers/gpu/drm/bridge/tc358767.c| 1 +
drivers/gpu/drm/bridge/ti-sn65dsi86.c| 1 +
drivers/gpu/drm/drm_dp_aux_dev.c | 6 ++
drivers/gpu/drm/drm_dp_mst_topology.c| 1 +
drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 +
drivers/gpu/drm/msm/edp/edp.h| 3 +--
drivers/gpu/drm/msm/edp/edp_aux.c| 5 +++--
drivers/gpu/drm/msm/edp/edp_ctrl.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
drivers/gpu/drm/radeon/atombios_dp.c | 1 +
drivers/gpu/drm/tegra/dpaux.c| 1 +
drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 +
include/drm/drm_dp_helper.h | 9 -
19 files changed, 33 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index a3ba9ca11e98..6d35da65e09f 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -188,6 +188,7 @@ void amdgpu_atombios_dp_aux_init(struct amdgpu_connector
*amdgpu_connector)
{
amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
amdgpu_connector->ddc_bus->aux.transfer =
amdgpu_atombios_dp_aux_transfer;
+ amdgpu_connector->ddc_bus->aux.drm_dev = amdgpu_connector->base.dev;
drm_dp_aux_init(_connector->ddc_bus->aux);
amdgpu_connector->ddc_bus->has_aux = true;
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 73cdb9fe981a..b8b69c33fb2b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -434,6 +434,7 @@ void amdgpu_dm_initialize_dp_connector(struct
amdgpu_display_manager *dm,
link_index);
aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
+ aconnector->dm_dp_aux.aux.drm_dev = dm->ddev;
drm_dp_aux_init(>dm_dp_aux.aux);
drm_dp_cec_register_connector(>dm_dp_aux.aux,
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
index aa6cda458eb9..e33cd077595a 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@@ -537,6 +537,7 @@ static int anx6345_bridge_attach(struct drm_bridge *bridge,
/* Register aux channel */
anx6345->aux.name = "DP-AUX";
anx6345->aux.dev = >client->dev;
+ anx6345->aux.drm_dev = bridge->dev;
anx6345->aux.transfer = anx6345_aux_transfer;
err = drm_dp_aux_register(>aux);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index f20558618220..5e6a0ed39199 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -905,6 +905,7 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge,
/* Register aux channel */
anx78xx->aux.name = "DP-AUX";
anx78xx->aux.dev = >client->dev;
+ anx78xx->aux.drm_dev = bridge->dev;
anx78xx->aux.transfer = anx78xx_aux_transfer;
err = drm_dp_aux_register(>aux);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index f115233b1cb9..550814ca2139 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@
[PATCH v2 02/20] drm/tegra: Don't register DP AUX channels before connectors
As pointed out by the documentation for drm_dp_aux_register(),
drm_dp_aux_init() should be used in situations where the AUX channel for a
display driver can potentially be registered before it's respective DRM
driver. This is the case with Tegra, since the DP aux channel exists as a
platform device instead of being a grandchild of the DRM device.
Since we're about to add a backpointer to a DP AUX channel's respective DRM
device, let's fix this so that we don't potentially allow userspace to use
the AUX channel before we've associated it with it's DRM connector.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/tegra/dpaux.c | 11 ++-
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index 105fb9cdbb3b..ea56c6ec25e4 100644
--- a/drivers/gpu/drm/tegra/dpaux.c
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -534,9 +534,7 @@ static int tegra_dpaux_probe(struct platform_device *pdev)
dpaux->aux.transfer = tegra_dpaux_transfer;
dpaux->aux.dev = >dev;
- err = drm_dp_aux_register(>aux);
- if (err < 0)
- return err;
+ drm_dp_aux_init(>aux);
/*
* Assume that by default the DPAUX/I2C pads will be used for HDMI,
@@ -589,8 +587,6 @@ static int tegra_dpaux_remove(struct platform_device *pdev)
pm_runtime_put_sync(>dev);
pm_runtime_disable(>dev);
- drm_dp_aux_unregister(>aux);
-
mutex_lock(_lock);
list_del(>list);
mutex_unlock(_lock);
@@ -723,6 +719,10 @@ int drm_dp_aux_attach(struct drm_dp_aux *aux, struct
tegra_output *output)
unsigned long timeout;
int err;
+ err = drm_dp_aux_register(aux);
+ if (err < 0)
+ return err;
+
output->connector.polled = DRM_CONNECTOR_POLL_HPD;
dpaux->output = output;
@@ -760,6 +760,7 @@ int drm_dp_aux_detach(struct drm_dp_aux *aux)
unsigned long timeout;
int err;
+ drm_dp_aux_unregister(aux);
disable_irq(dpaux->irq);
if (dpaux->output->panel) {
--
2.30.2
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[PATCH v2 04/20] drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister
Since AUX adapters on nouveau have their respective DRM connectors as
parents, we need to make sure that we register then after their connectors.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 26 ++---
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 61e6d7412505..bfce762adcf0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -905,13 +905,29 @@ nouveau_connector_late_register(struct drm_connector
*connector)
int ret;
ret = nouveau_backlight_init(connector);
+ if (ret)
+ return ret;
+
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ ret = drm_dp_aux_register(_connector(connector)->aux);
+ if (ret)
+ goto backlight_fini;
+ }
+ return 0;
+backlight_fini:
+ nouveau_backlight_fini(connector);
return ret;
}
static void
nouveau_connector_early_unregister(struct drm_connector *connector)
{
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
+ connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
+ drm_dp_aux_unregister(_connector(connector)->aux);
+
nouveau_backlight_fini(connector);
}
@@ -1343,14 +1359,8 @@ nouveau_connector_create(struct drm_device *dev,
snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
dcbe->hasht, dcbe->hashm);
nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
- ret = drm_dp_aux_register(_connector->aux);
- if (ret) {
- NV_ERROR(drm, "failed to register aux channel\n");
- kfree(nv_connector);
- return ERR_PTR(ret);
- }
- funcs = _connector_funcs;
- break;
+ drm_dp_aux_init(_connector->aux);
+ fallthrough;
default:
funcs = _connector_funcs;
break;
--
2.30.2
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[PATCH v2 03/20] drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace
Just adds some missing calls to
drm_dp_aux_register()/drm_dp_aux_unregister() for when we attach/detach the
bridge.
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 989a05bc8197..d966a33743b5 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1674,10 +1674,14 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
dev_dbg(mhdp->dev, "%s\n", __func__);
+ ret = drm_dp_aux_register(>aux);
+ if (ret < 0)
+ return ret;
+
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
ret = cdns_mhdp_connector_init(mhdp);
if (ret)
- return ret;
+ goto aux_unregister;
}
spin_lock(>start_lock);
@@ -1693,6 +1697,9 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
mhdp->regs + CDNS_APB_INT_MASK);
return 0;
+aux_unregister:
+ drm_dp_aux_unregister(>aux);
+ return ret;
}
static void cdns_mhdp_configure_video(struct cdns_mhdp_device *mhdp,
@@ -2025,6 +2032,8 @@ static void cdns_mhdp_detach(struct drm_bridge *bridge)
dev_dbg(mhdp->dev, "%s\n", __func__);
+ drm_dp_aux_unregister(>aux);
+
spin_lock(>start_lock);
mhdp->bridge_attached = false;
--
2.30.2
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[PATCH v2 01/20] drm/dp: Fixup kernel docs for struct drm_dp_aux
* Make sure that struct members are referred to using @, otherwise they
won't be formatted as such
* Make sure to refer to other struct types using & so they link back to
each struct's definition
* Make sure to precede constant values with % so they're formatted
correctly
Signed-off-by: Lyude Paul
Acked-by: Randy Dunlap
---
include/drm/drm_dp_helper.h | 44 ++---
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 632ad7faa006..5efa0d329b67 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1844,34 +1844,34 @@ struct drm_dp_aux_cec {
* @crc_count: counter of captured frame CRCs
* @transfer: transfers a message representing a single AUX transaction
*
- * The .dev field should be set to a pointer to the device that implements
- * the AUX channel.
+ * The @dev field should be set to a pointer to the device that implements the
+ * AUX channel.
*
- * The .name field may be used to specify the name of the I2C adapter. If set
to
- * NULL, dev_name() of .dev will be used.
+ * The @name field may be used to specify the name of the I2C adapter. If set
to
+ * %NULL, dev_name() of @dev will be used.
*
- * Drivers provide a hardware-specific implementation of how transactions
- * are executed via the .transfer() function. A pointer to a drm_dp_aux_msg
+ * Drivers provide a hardware-specific implementation of how transactions are
+ * executed via the @transfer() function. A pointer to a _dp_aux_msg
* structure describing the transaction is passed into this function. Upon
- * success, the implementation should return the number of payload bytes
- * that were transferred, or a negative error-code on failure. Helpers
- * propagate errors from the .transfer() function, with the exception of
- * the -EBUSY error, which causes a transaction to be retried. On a short,
- * helpers will return -EPROTO to make it simpler to check for failure.
+ * success, the implementation should return the number of payload bytes that
+ * were transferred, or a negative error-code on failure. Helpers propagate
+ * errors from the @transfer() function, with the exception of the %-EBUSY
+ * error, which causes a transaction to be retried. On a short, helpers will
+ * return %-EPROTO to make it simpler to check for failure.
*
* An AUX channel can also be used to transport I2C messages to a sink. A
- * typical application of that is to access an EDID that's present in the
- * sink device. The .transfer() function can also be used to execute such
- * transactions. The drm_dp_aux_register() function registers an I2C
- * adapter that can be passed to drm_probe_ddc(). Upon removal, drivers
- * should call drm_dp_aux_unregister() to remove the I2C adapter.
- * The I2C adapter uses long transfers by default; if a partial response is
- * received, the adapter will drop down to the size given by the partial
- * response for this transaction only.
+ * typical application of that is to access an EDID that's present in the sink
+ * device. The @transfer() function can also be used to execute such
+ * transactions. The drm_dp_aux_register() function registers an I2C adapter
+ * that can be passed to drm_probe_ddc(). Upon removal, drivers should call
+ * drm_dp_aux_unregister() to remove the I2C adapter. The I2C adapter uses long
+ * transfers by default; if a partial response is received, the adapter will
+ * drop down to the size given by the partial response for this transaction
+ * only.
*
- * Note that the aux helper code assumes that the .transfer() function
- * only modifies the reply field of the drm_dp_aux_msg structure. The
- * retry logic and i2c helpers assume this is the case.
+ * Note that the aux helper code assumes that the @transfer() function only
+ * modifies the reply field of the _dp_aux_msg structure. The retry logic
+ * and i2c helpers assume this is the case.
*/
struct drm_dp_aux {
const char *name;
--
2.30.2
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[PATCH v2 00/20] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers
Since it's been asked quite a few times on some of the various DP
related patch series I've submitted to use the new DRM printk helpers,
and it technically wasn't really trivial to do this before due to the
lack of a consistent way to find a drm_device for an AUX channel, this
patch series aims to address this. In this series we:
* Clean-up potentially erroneous usages of drm_dp_aux_init() and
drm_dp_aux_register() so that actual AUX registration doesn't happen
until we have an associated DRM device
* Clean-up any obvious errors in drivers we find along the way
* Add a backpointer to the respective drm_device for an AUX channel in
drm_dp_aux.drm_dev, and hook it up in every driver with an AUX channel
across the tree
* Add a new ratelimited print helper we'll need for converting the DP
helpers over to using the new DRM printk helpers
* Fix any inconsistencies with logging in drm_dp_helper.c so we always
have the aux channel name printed
* Prepare the various DP helpers so they can find the correct drm_device
to use for logging
* And finally, convert all of the DP helpers over to using drm_dbg_*()
and drm_err().
Series-wide changes in v2:
* Address most checkpatch issues ('most' as in all except for one line
going two chars over 100 in "drm/dp_mst: Pass drm_dp_mst_topology_mgr
to drm_dp_get_vc_payload_bw()" as this was the style in use
previously, and 2 chars over the limit looks nicer then trying to
line-wrap this
* Don't rewrap comments
Lyude Paul (20):
drm/dp: Fixup kernel docs for struct drm_dp_aux
drm/tegra: Don't register DP AUX channels before connectors
drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace
drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late
register/early unregister
drm/dp: Add backpointer to drm_device in drm_dp_aux
drm/dp: Clarify DP AUX registration time
drm/print: Fixup DRM_DEBUG_KMS_RATELIMITED()
drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay()
drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay()
drm/dp: Always print aux channel name in logs
drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect()
drm/dp_dual_mode: Pass drm_device to
drm_dp_dual_mode_set_tmds_output()
drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock()
drm/dp_dual_mode: Pass drm_device to
drm_dp_dual_mode_get_tmds_output()
drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode()
drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw()
drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*()
drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using
drm_err/drm_dbg_kms()
drm/dp_mst: Drop DRM_ERROR() on kzalloc() fail in
drm_dp_mst_handle_up_req()
drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*()
drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 5 +-
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 +
.../drm/bridge/analogix/analogix-anx6345.c| 1 +
.../drm/bridge/analogix/analogix-anx78xx.c| 1 +
.../drm/bridge/analogix/analogix_dp_core.c| 1 +
.../drm/bridge/cadence/cdns-mhdp8546-core.c | 12 +-
drivers/gpu/drm/bridge/tc358767.c | 1 +
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 1 +
drivers/gpu/drm/drm_dp_aux_dev.c | 6 +
drivers/gpu/drm/drm_dp_dual_mode_helper.c | 68 ++--
drivers/gpu/drm/drm_dp_helper.c | 181 +
drivers/gpu/drm/drm_dp_mst_topology.c | 381 +-
drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 +
.../drm/i915/display/intel_dp_link_training.c | 6 +-
drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +-
drivers/gpu/drm/i915/display/intel_hdmi.c | 7 +-
drivers/gpu/drm/i915/display/intel_lspcon.c | 17 +-
drivers/gpu/drm/msm/dp/dp_ctrl.c | 6 +-
drivers/gpu/drm/msm/edp/edp.h | 3 +-
drivers/gpu/drm/msm/edp/edp_aux.c | 5 +-
drivers/gpu/drm/msm/edp/edp_ctrl.c| 8 +-
drivers/gpu/drm/nouveau/nouveau_connector.c | 27 +-
drivers/gpu/drm/radeon/atombios_dp.c | 5 +-
drivers/gpu/drm/tegra/dpaux.c | 12 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 5 +-
include/drm/drm_dp_dual_mode_helper.h | 14 +-
include/drm/drm_dp_helper.h | 61 +--
include/drm/drm_dp_mst_helper.h | 3 +-
include/drm/drm_print.h | 20 +-
29 files changed, 478 insertions(+), 384 deletions(-)
--
2.30.2
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Re: [PATCH] drm: Update MST First Link Slot Information Based on Encoding Format
cate a virtual channel
> * @mgr: manager for this port
> @@ -4518,8 +4546,8 @@ bool drm_dp_mst_allocate_vcpi(struct
> drm_dp_mst_topology_mgr *mgr,
>
> ret = drm_dp_init_vcpi(mgr, >vcpi, pbn, slots);
> if (ret) {
> - DRM_DEBUG_KMS("failed to init vcpi slots=%d max=63 ret=%d\n",
> - DIV_ROUND_UP(pbn, mgr->pbn_div), ret);
> + DRM_DEBUG_KMS("failed to init vcpi slots=%d max=%d ret=%d\n",
> + DIV_ROUND_UP(pbn, mgr->pbn_div), mgr-
> >first_link_total_avail_slots, ret);
> drm_dp_mst_topology_put_port(port);
> goto out;
> }
> @@ -5162,7 +5190,7 @@ drm_dp_mst_atomic_check_vcpi_alloc_limit(struct
> drm_dp_mst_topology_mgr *mgr,
> struct drm_dp_mst_topology_state
> *mst_state)
> {
> struct drm_dp_vcpi_allocation *vcpi;
> - int avail_slots = 63, payload_count = 0;
> + int avail_slots = mgr->first_link_total_avail_slots, payload_count =
> 0;
>
> list_for_each_entry(vcpi, _state->vcpis, next) {
> /* Releasing VCPI is always OK-even if the port is gone */
> @@ -5191,7 +5219,7 @@ drm_dp_mst_atomic_check_vcpi_alloc_limit(struct
> drm_dp_mst_topology_mgr *mgr,
> }
> DRM_DEBUG_ATOMIC("[MST MGR:%p] mst state %p VCPI avail=%d used=%d\n",
> mgr, mst_state, avail_slots,
> - 63 - avail_slots);
> + mgr->first_link_total_avail_slots - avail_slots);
>
> return 0;
> }
> @@ -5455,6 +5483,8 @@ int drm_dp_mst_topology_mgr_init(struct
> drm_dp_mst_topology_mgr *mgr,
> if (!mgr->proposed_vcpis)
> return -ENOMEM;
> set_bit(0, >payload_mask);
> + mgr->first_link_total_avail_slots = 63;
> + mgr->first_link_start_slot = 1;
>
> mst_state = kzalloc(sizeof(*mst_state), GFP_KERNEL);
> if (mst_state == NULL)
> diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
> index bd1c39907b92..f4310b3705e7 100644
> --- a/include/drm/drm_dp_mst_helper.h
> +++ b/include/drm/drm_dp_mst_helper.h
> @@ -653,6 +653,13 @@ struct drm_dp_mst_topology_mgr {
> */
> int pbn_div;
>
> + /**
> + * @first_link_total_avail_slots: frist link total slots available.
> + * @first_link_start_slot: start slot index for real data
> transmission.
> + */
These kernel docs are also broken, you can't define two variables in the same
kernel doc comment if it's embedded in the struct, there has to be one kernel
doc comment per-member. Attempting to generate documentation with make htmldocs
even mentions this:
./include/drm/drm_dp_mst_helper.h:770: warning: Function parameter or member
'first_link_start_slot' not described in 'drm_dp_mst_topology_mgr'
> + u8 first_link_total_avail_slots;
> + u8 first_link_start_slot;
> +
> /**
> * @funcs: Atomic helper callbacks
> */
> @@ -795,6 +802,7 @@ int drm_dp_mst_get_vcpi_slots(struct
> drm_dp_mst_topology_mgr *mgr, struct drm_dp
>
> void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct
> drm_dp_mst_port *port);
>
> +void drm_dp_mst_update_first_link_slot_info(struct drm_dp_mst_topology_mgr
> *mgr, uint8_t encoding_format);
>
> void drm_dp_mst_deallocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
> struct drm_dp_mst_port *port);
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
on my status. I don't bite!
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Re: [PATCH v2] drm/mst: Enhance MST topology logging
Reviewed-by: Lyude Paul
Let me know if you need me to push this to drm-misc-next for you
On Thu, 2021-03-25 at 14:06 -0400, Eryk Brol wrote:
> [why]
> MST topology print was missing fec logging and pdt printed
> as an int wasn't clear. vcpi and payload info was printed as an
> arbitrary series of ints which requires user to know the ordering
> of the prints, making the logs difficult to use.
>
> [how]
> -add fec logging
> -add pdt parsing into strings
> -format vcpi and payload info into tables with headings
> -clean up topology prints
>
> ---
>
> v2: Addressed Lyude's comments
> -made helper function return const
> -fixed indentation and spacing issues
>
> Signed-off-by: Eryk Brol
> ---
> drivers/gpu/drm/drm_dp_mst_topology.c | 59 ++-
> 1 file changed, 48 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 932c4641ec3e..de5124ce42cb 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -4720,6 +4720,28 @@ static void drm_dp_mst_kick_tx(struct
> drm_dp_mst_topology_mgr *mgr)
> queue_work(system_long_wq, >tx_work);
> }
>
> +/*
> + * Helper function for parsing DP device types into convenient strings
> + * for use with dp_mst_topology
> + */
> +static const char *pdt_to_string(u8 pdt)
> +{
> + switch (pdt) {
> + case DP_PEER_DEVICE_NONE:
> + return "NONE";
> + case DP_PEER_DEVICE_SOURCE_OR_SST:
> + return "SOURCE OR SST";
> + case DP_PEER_DEVICE_MST_BRANCHING:
> + return "MST BRANCHING";
> + case DP_PEER_DEVICE_SST_SINK:
> + return "SST SINK";
> + case DP_PEER_DEVICE_DP_LEGACY_CONV:
> + return "DP LEGACY CONV";
> + default:
> + return "ERR";
> + }
> +}
> +
> static void drm_dp_mst_dump_mstb(struct seq_file *m,
> struct drm_dp_mst_branch *mstb)
> {
> @@ -4732,9 +4754,20 @@ static void drm_dp_mst_dump_mstb(struct seq_file *m,
> prefix[i] = '\t';
> prefix[i] = '\0';
>
> - seq_printf(m, "%smst: %p, %d\n", prefix, mstb, mstb->num_ports);
> + seq_printf(m, "%smstb - [%p]: num_ports: %d\n", prefix, mstb, mstb-
> >num_ports);
> list_for_each_entry(port, >ports, next) {
> - seq_printf(m, "%sport: %d: input: %d: pdt: %d, ddps: %d ldps:
> %d, sdp: %d/%d, %p, conn: %p\n", prefix, port->port_num, port->input, port-
> >pdt, port->ddps, port->ldps, port->num_sdp_streams, port-
> >num_sdp_stream_sinks, port, port->connector);
> + seq_printf(m, "%sport %d - [%p] (%s - %s): ddps: %d, ldps: %d,
> sdp: %d/%d, fec: %s, conn: %p\n",
> + prefix,
> + port->port_num,
> + port,
> + port->input ? "input" : "output",
> + pdt_to_string(port->pdt),
> + port->ddps,
> + port->ldps,
> + port->num_sdp_streams,
> + port->num_sdp_stream_sinks,
> + port->fec_capable ? "true" : "false",
> + port->connector);
> if (port->mstb)
> drm_dp_mst_dump_mstb(m, port->mstb);
> }
> @@ -4787,33 +4820,37 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
> mutex_unlock(>lock);
>
> mutex_lock(>payload_lock);
> - seq_printf(m, "vcpi: %lx %lx %d\n", mgr->payload_mask, mgr->vcpi_mask,
> - mgr->max_payloads);
> + seq_printf(m, "\n*** VCPI Info ***\n");
> + seq_printf(m, "payload_mask: %lx, vcpi_mask: %lx, max_payloads: %d\n",
> mgr->payload_mask, mgr->vcpi_mask, mgr->max_payloads);
>
> + seq_printf(m, "\n| idx | port # | vcp_id | # slots | sink
> name |\n");
> for (i = 0; i < mgr->max_payloads; i++) {
> if (mgr->proposed_vcpis[i]) {
> char name[14];
>
> port = container_of(mgr->proposed_vcpis[i], struct
> drm_dp_mst_port, vcpi);
> fetch_monitor_name(mgr, port, name, sizeof(name));
> - seq_printf(m, "vcpi %d: %d %d %d sink name: %s\n", i,
Re: [PATCH] drm/dp_mst: Enhance DP MST topology logging
gr->proposed_vcpis[i]) {
> char name[14];
>
> port = container_of(mgr->proposed_vcpis[i], struct
> drm_dp_mst_port, vcpi);
> fetch_monitor_name(mgr, port, name, sizeof(name));
> - seq_printf(m, "vcpi %d: %d %d %d sink name: %s\n", i,
> - port->port_num, port->vcpi.vcpi,
> - port->vcpi.num_slots,
> - (*name != 0) ? name : "Unknown");
> + seq_printf(m, "%10d%10d%10d%10d%20s\n",
> + i,
> + port->port_num,
> + port->vcpi.vcpi,
> + port->vcpi.num_slots,
> + (*name != 0) ? name : "Unknown");
Maybe cleanup the second space after the : here while you're at it. Also, the
indenting is wrong here too
> } else
> - seq_printf(m, "vcpi %d:unused\n", i);
> + seq_printf(m, "%6d - Unused\n", i);
> }
> + seq_printf(m, "\n *** Payload Info ***\n");
^
another accidental space
> + seq_printf(m, "| idx | state | start slot | # slots |\n");
> for (i = 0; i < mgr->max_payloads; i++) {
> - seq_printf(m, "payload %d: %d, %d, %d\n",
> - i,
> - mgr->payloads[i].payload_state,
> - mgr->payloads[i].start_slot,
> - mgr->payloads[i].num_slots);
> -
> -
> + seq_printf(m, "%10d%10d%15d%10d\n",
> + i,
> + mgr->payloads[i].payload_state,
> + mgr->payloads[i].start_slot,
> + mgr->payloads[i].num_slots);
Need to correct the indenting here as well
> }
> mutex_unlock(>payload_lock);
>
> + seq_printf(m, "\n *** DPCD Info ***\n");
^ another extra space
> mutex_lock(>lock);
> if (mgr->mst_primary) {
> u8 buf[DP_PAYLOAD_TABLE_SIZE];
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
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asked me a question, are waiting for a review/merge on a patch, etc. and I
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Re: [PATCH] drivers: gpu: priv.h is included twice
Reviewed-by: Lyude Paul On Mon, 2021-03-22 at 20:45 +0800, Wan Jiabing wrote: > priv.h has been included at line 22, so remove > the duplicate include at line 24. > > Signed-off-by: Wan Jiabing > --- > drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c > b/drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c > index c39e797dc7c9..09524168431c 100644 > --- a/drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c > @@ -20,8 +20,6 @@ > * OTHER DEALINGS IN THE SOFTWARE. > */ > #include "priv.h" > - > -#include "priv.h" > #include > > static void * -- Sincerely, Lyude Paul (she/her) Software Engineer at Red Hat Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've asked me a question, are waiting for a review/merge on a patch, etc. and I haven't responded in a while, please feel free to send me another email to check on my status. I don't bite! ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH] drm/i915/dpcd_bl: Don't try vesa interface unless specified by VBT
On Tue, 2021-03-23 at 16:06 +0200, Jani Nikula wrote:
> On Thu, 18 Mar 2021, Lyude Paul wrote:
> > Actually-NAK this. I just realized I've been misreading the bug and that
> > this
> > doesn't actually seem to be fixed. Will resend once I figure out what's
> > going on
>
> Well, I think there are actually multiple issues on multiple
> machines. This fixes the issue on ThinkPad X1 Titanium Gen1 [1].
>
> I suspect reverting 98e497e203a5 ("drm/i915/dpcd_bl: uncheck PWM_PIN_CAP
> when detect eDP backlight capabilities") would too. But then that would
> break *other* machines that claim support for *both* eDP PWM pin and
> DPCD backlight control, I think.
>
> I think there are issues with how we try setup DPCD backlight if the GOP
> has set up PWM backlight. For example, we don't set the backlight
> control mode correctly until the next disable/enable sequence. However,
> I tried to fix this, and I think I was doing all the right things, and
> DPCD reads seemed to confirm this, yet I was not able to control
> brightness using DPCD. I don't know what gives, but I do know eDP PWM
> pin control works.
Should we go ahead and push the VESA fix for this then? If you're willing to
test future patches on that machine, we could give another shot at enabling this
in the future if we find reason to.
>
>
> BR,
> Jani.
>
>
> [1] https://gitlab.freedesktop.org/drm/intel/-/issues/3158
>
>
> >
> > On Thu, 2021-03-18 at 13:02 -0400, Lyude Paul wrote:
> > > Looks like that there actually are another subset of laptops on the market
> > > that don't support the Intel HDR backlight interface, but do advertise
> > > support for the VESA DPCD backlight interface despite the fact it doesn't
> > > seem to work.
> > >
> > > Note though I'm not entirely clear on this - on one of the machines where
> > > this issue was observed, I also noticed that we appeared to be rejecting
> > > the VBT defined backlight frequency in
> > > intel_dp_aux_vesa_calc_max_backlight(). It's noted in this function that:
> > >
> > > /* Use highest possible value of Pn for more granularity of brightness
> > > * adjustment while satifying the conditions below.
> > > * ...
> > > * - FxP is within 25% of desired value.
> > > * Note: 25% is arbitrary value and may need some tweak.
> > > */
> > >
> > > So it's possible that this value might just need to be tweaked, but for
> > > now
> > > let's just disable the VESA backlight interface unless it's specified in
> > > the VBT just to be safe. We might be able to try enabling this again by
> > > default in the future.
> > >
> > > Fixes: 2227816e647a ("drm/i915/dp: Allow forcing specific interfaces
> > > through
> > > enable_dpcd_backlight")
> > > Cc: Jani Nikula
> > > Cc: Rodrigo Vivi
> > > Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3169
> > > Signed-off-by: Lyude Paul
> > > ---
> > > drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 1 -
> > > 1 file changed, 1 deletion(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > index 651884390137..4f8337c7fd2e 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> > > @@ -646,7 +646,6 @@ int intel_dp_aux_init_backlight_funcs(struct
> > > intel_connector *connector)
> > > break;
> > > case INTEL_BACKLIGHT_DISPLAY_DDI:
> > > try_intel_interface = true;
> > > - try_vesa_interface = true;
> > > break;
> > > default:
> > > return -ENODEV;
>
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
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Re: [PATCH 14/19] drm/nouveau/dispnv50/headc57d: Make local function 'headc57d_olut' static
Reviewed-by: Lyude Paul
On Fri, 2021-03-19 at 08:24 +, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
>
> drivers/gpu/drm/nouveau/dispnv50/headc57d.c:173:1: warning: no previous
> prototype for ‘headc57d_olut’ [-Wmissing-prototypes]
>
> Cc: Ben Skeggs
> Cc: David Airlie
> Cc: Daniel Vetter
> Cc: Lyude Paul
> Cc: dri-devel@lists.freedesktop.org
> Cc: nouv...@lists.freedesktop.org
> Signed-off-by: Lee Jones
> ---
> drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> index fd51527b56b83..bdcfd240d61c8 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> @@ -169,7 +169,7 @@ headc57d_olut_load(struct drm_color_lut *in, int size,
> void __iomem *mem)
> writew(readw(mem - 4), mem + 4);
> }
>
> -bool
> +static bool
> headc57d_olut(struct nv50_head *head, struct nv50_head_atom *asyh, int size)
> {
> if (size != 0 && size != 256 && size != 1024)
--
Sincerely,
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Software Engineer at Red Hat
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asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
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Re: [PATCH] drm/dp_mst: Enhance DP MST topology logging
: "Unknown");
> + seq_printf(m, "%10d%10d%10d%10d%20s\n",
> + i,
> + port->port_num,
> + port->vcpi.vcpi,
> + port->vcpi.num_slots,
> + (*name != 0) ? name : "Unknown");
> } else
> - seq_printf(m, "vcpi %d:unused\n", i);
> + seq_printf(m, "%6d - Unused\n", i);
> }
> + seq_printf(m, "\n *** Payload Info ***\n");
> + seq_printf(m, "| idx | state | start slot | # slots |\n");
> for (i = 0; i < mgr->max_payloads; i++) {
> - seq_printf(m, "payload %d: %d, %d, %d\n",
> - i,
> - mgr->payloads[i].payload_state,
> - mgr->payloads[i].start_slot,
> - mgr->payloads[i].num_slots);
> -
> -
> + seq_printf(m, "%10d%10d%15d%10d\n",
> + i,
> + mgr->payloads[i].payload_state,
> + mgr->payloads[i].start_slot,
> + mgr->payloads[i].num_slots);
> }
> mutex_unlock(>payload_lock);
>
> + seq_printf(m, "\n *** DPCD Info ***\n");
> mutex_lock(>lock);
> if (mgr->mst_primary) {
> u8 buf[DP_PAYLOAD_TABLE_SIZE];
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
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[PATCH v2] drm/nouveau/kms/nv50-: Correct size checks for cursors
Found this while trying to make some changes to the kms_cursor_crc test.
curs507a_acquire checks that the width and height of the cursor framebuffer
are equal (asyw->image.{w,h}). This isn't entirely correct though, as the
height of the cursor can be larger than the size of the cursor, as long as
the width is the same as the cursor size and there's no framebuffer offset.
Note that I'm not entirely sure why this wasn't previously breaking
kms_cursor_crc tests - they all set up cursors with the height being one
pixel larger than the actual size of the cursor. But this seems to fix
things, and the code before was definitely incorrect - so it's not really
worth looking into further imho.
Changes since v1:
* Don't use crtc_w everywhere for determining cursor layout, just use fb
size again
* Change check so that we only check that the w/h of the cursor plane is
the same, the width of the scanout surface is the same as the framebuffer
width, and that there's no offset being used for the cursor surface.
Signed-off-by: Lyude Paul
Cc: Martin Peres
Cc: Jeremy Cline
---
drivers/gpu/drm/nouveau/dispnv50/curs507a.c | 15 ++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
b/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
index 54fbd6fe751d..00e19fd959ea 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
@@ -98,6 +98,7 @@ static int
curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
struct nv50_head_atom *asyh)
{
+ struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
struct nv50_head *head = nv50_head(asyw->state.crtc);
int ret;
@@ -109,8 +110,20 @@ curs507a_acquire(struct nv50_wndw *wndw, struct
nv50_wndw_atom *asyw,
if (ret || !asyh->curs.visible)
return ret;
- if (asyw->image.w != asyw->image.h)
+ if (asyw->state.crtc_w != asyw->state.crtc_h) {
+ NV_ATOMIC(drm, "Plane width/height must be equal for
cursors\n");
return -EINVAL;
+ }
+
+ if (asyw->image.w != asyw->state.crtc_w) {
+ NV_ATOMIC(drm, "Plane width must be equal to fb width for
cursors (height can be larger though)\n");
+ return -EINVAL;
+ }
+
+ if (asyw->state.src_x || asyw->state.src_y) {
+ NV_ATOMIC(drm, "Cursor planes do not support framebuffer
offsets\n");
+ return -EINVAL;
+ }
ret = head->func->curs_layout(head, asyw, asyh);
if (ret)
--
2.29.2
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Re: [Nouveau] [PATCH] drm/nouveau/kms/nv50-: Check plane size for cursors, not fb size
On Thu, 2021-03-18 at 18:13 -0400, Ilia Mirkin wrote:
> On Thu, Mar 18, 2021 at 5:56 PM Lyude Paul wrote:
> >
> > Found this while trying to make some changes to the kms_cursor_crc test.
> > curs507a_acquire checks that the width and height of the cursor framebuffer
> > are equal (asyw->image.{w,h}). This is actually wrong though, as we only
> > want to be concerned that the actual width/height of the plane are the
> > same. It's fine if we scan out from an fb that's slightly larger than the
> > cursor plane (in fact, some igt tests actually do this).
>
> How so? The scanout engine expects the data to be packed. Height can
> be larger, but width has to match.
Huh - wasn't expecting that, nice catch. I'll fix this up in a moment
>
> -ilia
>
--
Sincerely,
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Software Engineer at Red Hat
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haven't responded in a while, please feel free to send me another email to check
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[PATCH] drm/nouveau/kms/nv50-: Check plane size for cursors, not fb size
Found this while trying to make some changes to the kms_cursor_crc test.
curs507a_acquire checks that the width and height of the cursor framebuffer
are equal (asyw->image.{w,h}). This is actually wrong though, as we only
want to be concerned that the actual width/height of the plane are the
same. It's fine if we scan out from an fb that's slightly larger than the
cursor plane (in fact, some igt tests actually do this).
Note that I'm not entirely sure why this wasn't previously breaking
kms_cursor_crc tests - they all set up cursors with the height being one
pixel larger than the actual size of the cursor. But this seems to fix
things, and the code before was definitely incorrect - so it's not really
worth looking into further imho.
Signed-off-by: Lyude Paul
Cc: Martin Peres
Cc: Jeremy Cline
---
drivers/gpu/drm/nouveau/dispnv50/curs507a.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/head507d.c | 2 +-
drivers/gpu/drm/nouveau/dispnv50/head917d.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
b/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
index 54fbd6fe751d..7a7f80e51ec0 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/curs507a.c
@@ -109,7 +109,7 @@ curs507a_acquire(struct nv50_wndw *wndw, struct
nv50_wndw_atom *asyw,
if (ret || !asyh->curs.visible)
return ret;
- if (asyw->image.w != asyw->image.h)
+ if (asyw->state.crtc_w != asyw->state.crtc_h)
return -EINVAL;
ret = head->func->curs_layout(head, asyw, asyh);
diff --git a/drivers/gpu/drm/nouveau/dispnv50/head507d.c
b/drivers/gpu/drm/nouveau/dispnv50/head507d.c
index 09b89983864b..3d230ca488c9 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/head507d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/head507d.c
@@ -176,7 +176,7 @@ int
head507d_curs_layout(struct nv50_head *head, struct nv50_wndw_atom *asyw,
struct nv50_head_atom *asyh)
{
- switch (asyw->image.w) {
+ switch (asyw->state.crtc_w) {
case 32: asyh->curs.layout =
NV507D_HEAD_SET_CONTROL_CURSOR_SIZE_W32_H32; break;
case 64: asyh->curs.layout =
NV507D_HEAD_SET_CONTROL_CURSOR_SIZE_W64_H64; break;
default:
diff --git a/drivers/gpu/drm/nouveau/dispnv50/head917d.c
b/drivers/gpu/drm/nouveau/dispnv50/head917d.c
index 4ce47b55f72c..caa7d633691b 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/head917d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/head917d.c
@@ -103,7 +103,7 @@ int
head917d_curs_layout(struct nv50_head *head, struct nv50_wndw_atom *asyw,
struct nv50_head_atom *asyh)
{
- switch (asyw->state.fb->width) {
+ switch (asyw->state.crtc_w) {
case 32: asyh->curs.layout =
NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W32_H32; break;
case 64: asyh->curs.layout =
NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W64_H64; break;
case 128: asyh->curs.layout =
NV917D_HEAD_SET_CONTROL_CURSOR_SIZE_W128_H128; break;
--
2.29.2
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Re: [PATCH] drm/i915/dpcd_bl: Don't try vesa interface unless specified by VBT
Actually-NAK this. I just realized I've been misreading the bug and that this
doesn't actually seem to be fixed. Will resend once I figure out what's going on
On Thu, 2021-03-18 at 13:02 -0400, Lyude Paul wrote:
> Looks like that there actually are another subset of laptops on the market
> that don't support the Intel HDR backlight interface, but do advertise
> support for the VESA DPCD backlight interface despite the fact it doesn't
> seem to work.
>
> Note though I'm not entirely clear on this - on one of the machines where
> this issue was observed, I also noticed that we appeared to be rejecting
> the VBT defined backlight frequency in
> intel_dp_aux_vesa_calc_max_backlight(). It's noted in this function that:
>
> /* Use highest possible value of Pn for more granularity of brightness
> * adjustment while satifying the conditions below.
> * ...
> * - FxP is within 25% of desired value.
> * Note: 25% is arbitrary value and may need some tweak.
> */
>
> So it's possible that this value might just need to be tweaked, but for now
> let's just disable the VESA backlight interface unless it's specified in
> the VBT just to be safe. We might be able to try enabling this again by
> default in the future.
>
> Fixes: 2227816e647a ("drm/i915/dp: Allow forcing specific interfaces through
> enable_dpcd_backlight")
> Cc: Jani Nikula
> Cc: Rodrigo Vivi
> Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3169
> Signed-off-by: Lyude Paul
> ---
> drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> index 651884390137..4f8337c7fd2e 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
> @@ -646,7 +646,6 @@ int intel_dp_aux_init_backlight_funcs(struct
> intel_connector *connector)
> break;
> case INTEL_BACKLIGHT_DISPLAY_DDI:
> try_intel_interface = true;
> - try_vesa_interface = true;
> break;
> default:
> return -ENODEV;
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
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[PATCH] drm/i915/dpcd_bl: Don't try vesa interface unless specified by VBT
Looks like that there actually are another subset of laptops on the market
that don't support the Intel HDR backlight interface, but do advertise
support for the VESA DPCD backlight interface despite the fact it doesn't
seem to work.
Note though I'm not entirely clear on this - on one of the machines where
this issue was observed, I also noticed that we appeared to be rejecting
the VBT defined backlight frequency in
intel_dp_aux_vesa_calc_max_backlight(). It's noted in this function that:
/* Use highest possible value of Pn for more granularity of brightness
* adjustment while satifying the conditions below.
* ...
* - FxP is within 25% of desired value.
* Note: 25% is arbitrary value and may need some tweak.
*/
So it's possible that this value might just need to be tweaked, but for now
let's just disable the VESA backlight interface unless it's specified in
the VBT just to be safe. We might be able to try enabling this again by
default in the future.
Fixes: 2227816e647a ("drm/i915/dp: Allow forcing specific interfaces through
enable_dpcd_backlight")
Cc: Jani Nikula
Cc: Rodrigo Vivi
Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3169
Signed-off-by: Lyude Paul
---
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
index 651884390137..4f8337c7fd2e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
@@ -646,7 +646,6 @@ int intel_dp_aux_init_backlight_funcs(struct
intel_connector *connector)
break;
case INTEL_BACKLIGHT_DISPLAY_DDI:
try_intel_interface = true;
- try_vesa_interface = true;
break;
default:
return -ENODEV;
--
2.29.2
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[PATCH 2/2] drm/nouveau/kms/nv50-: Always validate LUTs in nv50_head_atomic_check_lut()
When it comes to gamma or degamma luts, nouveau will actually skip the
calculation of certain LUTs depending on the head and plane states. For
instance, when the head is disabled we don't perform any error checking on
the gamma LUT, and likewise if no planes are present and enabled in our
atomic state we will skip error checking the degamma LUT. This is a bit of
a problem though, since the per-head gamma and degamma props in DRM can be
changed even while a head is disabled - a situation which can be triggered
by the igt testcase mentioned down below.
Originally I thought this was a bit silly and was tempted to just fix the
igt test to only set gamma/degamma with the head enabled. After a bit of
thinking though I realized we should fix this in nouveau. This is because
if a program decides to set an invalid LUT for a head before enabling the
head, such a property change would succeed while also making it impossible
to turn the head back on until the LUT is removed or corrected - something
that could be painful for a user to figure out.
So, fix this checking both degamma and gamma LUTs unconditionally during
atomic checks. We start by calling nv50_head_atomic_check_lut() regardless
of whether the head is active or not in nv50_head_atomic_check(). Then we
move the ilut error checking into nv50_head_atomic_check_lut() and add a
per-head hook for it, primarily because as a per-CRTC property DRM we want
the LUT to be error checked by the head any time it's included in an atomic
state. Of course though, actual programming of the degamma lut to hardware
is still handled in each plane's atomic check and commit.
Signed-off-by: Lyude Paul
Testcase: igt/kms_color/pipe-invalid-*-lut-sizes
---
drivers/gpu/drm/nouveau/dispnv50/base907c.c | 6 +
drivers/gpu/drm/nouveau/dispnv50/head.c | 30 +++--
drivers/gpu/drm/nouveau/dispnv50/head.h | 2 ++
drivers/gpu/drm/nouveau/dispnv50/head907d.c | 6 +
drivers/gpu/drm/nouveau/dispnv50/head917d.c | 1 +
drivers/gpu/drm/nouveau/dispnv50/headc37d.c | 1 +
drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 1 +
drivers/gpu/drm/nouveau/dispnv50/wndw.c | 5 +---
drivers/gpu/drm/nouveau/dispnv50/wndw.h | 4 +--
drivers/gpu/drm/nouveau/dispnv50/wndwc37e.c | 6 +
drivers/gpu/drm/nouveau/dispnv50/wndwc57e.c | 7 +++--
11 files changed, 41 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/base907c.c
b/drivers/gpu/drm/nouveau/dispnv50/base907c.c
index 5396e3707cc4..e6b0417c325b 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/base907c.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/base907c.c
@@ -103,12 +103,9 @@ base907c_xlut_set(struct nv50_wndw *wndw, struct
nv50_wndw_atom *asyw)
return 0;
}
-static bool
+static void
base907c_ilut(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw, int size)
{
- if (size != 256 && size != 1024)
- return false;
-
if (size == 1024)
asyw->xlut.i.mode =
NV907C_SET_BASE_LUT_LO_MODE_INTERPOLATE_1025_UNITY_RANGE;
else
@@ -116,7 +113,6 @@ base907c_ilut(struct nv50_wndw *wndw, struct nv50_wndw_atom
*asyw, int size)
asyw->xlut.i.enable = NV907C_SET_BASE_LUT_LO_ENABLE_ENABLE;
asyw->xlut.i.load = head907d_olut_load;
- return true;
}
static inline u32
diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c
b/drivers/gpu/drm/nouveau/dispnv50/head.c
index fb821dcf6bd2..3b96eafb7bdd 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/head.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/head.c
@@ -225,9 +225,20 @@ nv50_head_atomic_check_lut(struct nv50_head *head,
struct drm_crtc *crtc = >base.base;
struct nv50_disp *disp = nv50_disp(dev);
struct nouveau_drm *drm = nouveau_drm(dev);
- struct drm_property_blob *olut = asyh->state.gamma_lut;
+ struct drm_property_blob *olut = asyh->state.gamma_lut,
+*ilut = asyh->state.degamma_lut;
int size;
+ /* Ensure that the ilut is valid */
+ if (ilut) {
+ size = drm_color_lut_size(ilut);
+ if (!head->func->ilut_check(size)) {
+ NV_ATOMIC(drm, "Invalid size %d for degamma on
[CRTC:%d:%s]\n",
+ size, crtc->base.id, crtc->name);
+ return -EINVAL;
+ }
+ }
+
/* Determine whether core output LUT should be enabled. */
if (olut) {
/* Check if any window(s) have stolen the core output LUT
@@ -329,8 +340,17 @@ nv50_head_atomic_check(struct drm_crtc *crtc, struct
drm_atomic_state *state)
struct drm_connector_state *conns;
struct drm_connector *conn;
int i, ret;
+ bool check_lut = asyh->state.color_mgmt_changed ||
+memcmp(>wndw, >wndw, sizeof(asyh->wndw));
NV_ATOMIC(drm, "%s atomic_check %d\n", crtc-&
[PATCH 1/2] drm/nouveau/kms/nv50-: Use NV_ATOMIC() in nv50_head_atomic_check_lut()
Since this is used in the atomic check, we should use the right debug macro
for it.
Signed-off-by: Lyude Paul
Cc: Martin Peres
Cc: Jeremy Cline
---
drivers/gpu/drm/nouveau/dispnv50/head.c | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c
b/drivers/gpu/drm/nouveau/dispnv50/head.c
index ec361d17e900..fb821dcf6bd2 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/head.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/head.c
@@ -221,7 +221,10 @@ static int
nv50_head_atomic_check_lut(struct nv50_head *head,
struct nv50_head_atom *asyh)
{
- struct nv50_disp *disp = nv50_disp(head->base.base.dev);
+ struct drm_device *dev = head->base.base.dev;
+ struct drm_crtc *crtc = >base.base;
+ struct nv50_disp *disp = nv50_disp(dev);
+ struct nouveau_drm *drm = nouveau_drm(dev);
struct drm_property_blob *olut = asyh->state.gamma_lut;
int size;
@@ -251,7 +254,8 @@ nv50_head_atomic_check_lut(struct nv50_head *head,
}
if (!head->func->olut(head, asyh, size)) {
- DRM_DEBUG_KMS("Invalid olut\n");
+ NV_ATOMIC(drm, "Invalid size %d for gamma on [CRTC:%d:%s]\n",
+ size, crtc->base.id, crtc->name);
return -EINVAL;
}
asyh->olut.handle = disp->core->chan.vram.handle;
--
2.29.2
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[PATCH v2] drm/nouveau/kms/nve4-nv108: Don't advertise 256x256 cursor support yet
While Kepler does technically support 256x256 cursors, it turns out that
in order for us to use these correctly we need to make sure that the cursor
plane uses a ctxdma that is set to use small (4K)/large (128K) pages -
whichever is applicable to the given cursor surface.
Right now however, we share the main kmsVramCtxDma that is used for all but
the ovly plane which defaults to small pages - resulting in artifacts when
we use 256x256 cursor surfaces. So until we teach nouveau to use a separate
ctxdma for the cursor, let's just stop advertising 256x256 cursors by
default - which should fix the issues that users were seeing.
Coincidentally - this is also why small ovlys don't work on Kepler: the
ctxdma we use for ovlys is set to large pages.
Changes since v2:
* Fix comments and patch description
Signed-off-by: Lyude Paul
Fixes: d3b2f0f7921c ("drm/nouveau/kms/nv50-: Report max cursor size to
userspace")
Cc: # v5.11+
---
drivers/gpu/drm/nouveau/dispnv50/disp.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c
b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 196612addfd6..d92cf9e17ac3 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -2693,9 +2693,19 @@ nv50_display_create(struct drm_device *dev)
else
nouveau_display(dev)->format_modifiers = disp50xx_modifiers;
- if (disp->disp->object.oclass >= GK104_DISP) {
+ /* FIXME: 256x256 cursors are supported on Kepler, however unlike
Maxwell and later
+* generations Kepler requires that we specify the page type, small
(4K) or large (128K),
+* correctly for the ctxdma being used on curs/ovly. We currently share
a ctxdma across all
+* display planes (except ovly) that defaults to small pages, which
results in artifacting
+* on 256x256 cursors. Until we teach nouveau to create an appropriate
ctxdma for the cursor
+* fb in use, simply avoid advertising support for 256x256 cursors.
+*/
+ if (disp->disp->object.oclass >= GM107_DISP) {
dev->mode_config.cursor_width = 256;
dev->mode_config.cursor_height = 256;
+ } else if (disp->disp->object.oclass >= GK104_DISP) {
+ dev->mode_config.cursor_width = 128;
+ dev->mode_config.cursor_height = 128;
} else {
dev->mode_config.cursor_width = 64;
dev->mode_config.cursor_height = 64;
--
2.29.2
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[PATCH] drm/nouveau/kms/nve4-nv108: Limit cursors to 128x128
While Kepler does technically support 256x256 cursors, it turns out that
Kepler actually has some additional requirements for scanout surfaces that
we're not enforcing correctly, which aren't present on Maxwell and later.
Cursor surfaces must always use small pages (4K), and overlay surfaces must
always use large pages (128K).
Fixing this correctly though will take a bit more work: as we'll need to
add some code in prepare_fb() to move cursor FBs in large pages to small
pages, and vice-versa for overlay FBs. So until we have the time to do
that, just limit cursor surfaces to 128x128 - a size small enough to always
default to small pages.
This means small ovlys are still broken on Kepler, but it is extremely
unlikely anyone cares about those anyway :).
Signed-off-by: Lyude Paul
Fixes: d3b2f0f7921c ("drm/nouveau/kms/nv50-: Report max cursor size to
userspace")
Cc: # v5.11+
---
drivers/gpu/drm/nouveau/dispnv50/disp.c | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c
b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 196612addfd6..1c9c0cdf85db 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -2693,9 +2693,20 @@ nv50_display_create(struct drm_device *dev)
else
nouveau_display(dev)->format_modifiers = disp50xx_modifiers;
- if (disp->disp->object.oclass >= GK104_DISP) {
+ /* FIXME: 256x256 cursors are supported on Kepler, however unlike
Maxwell and later
+* generations Kepler requires that we use small pages (4K) for cursor
scanout surfaces. The
+* proper fix for this is to teach nouveau to migrate fbs being used
for the cursor plane to
+* small page allocations in prepare_fb(). When this is implemented, we
should also force
+* large pages (128K) for ovly fbs in order to fix Kepler ovlys.
+* But until then, just limit cursors to 128x128 - which is small
enough to avoid ever using
+* large pages.
+*/
+ if (disp->disp->object.oclass >= GM107_DISP) {
dev->mode_config.cursor_width = 256;
dev->mode_config.cursor_height = 256;
+ } else if (disp->disp->object.oclass >= GK104_DISP) {
+ dev->mode_config.cursor_width = 128;
+ dev->mode_config.cursor_height = 128;
} else {
dev->mode_config.cursor_width = 64;
dev->mode_config.cursor_height = 64;
--
2.29.2
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Re: [PATCH 17/53] drm/nouveau/dispnv50/headc57d: Make local function 'headc57d_olut' static
Reviewed-by: Lyude Paul
Thanks!
On Wed, 2021-03-03 at 13:42 +, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
>
> drivers/gpu/drm/nouveau/dispnv50/headc57d.c:173:1: warning: no previous
> prototype for ‘headc57d_olut’ [-Wmissing-prototypes]
>
> Cc: Ben Skeggs
> Cc: David Airlie
> Cc: Daniel Vetter
> Cc: Lyude Paul
> Cc: dri-devel@lists.freedesktop.org
> Cc: nouv...@lists.freedesktop.org
> Signed-off-by: Lee Jones
> ---
> drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> index fd51527b56b83..bdcfd240d61c8 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
> @@ -169,7 +169,7 @@ headc57d_olut_load(struct drm_color_lut *in, int size,
> void __iomem *mem)
> writew(readw(mem - 4), mem + 4);
> }
>
> -bool
> +static bool
> headc57d_olut(struct nv50_head *head, struct nv50_head_atom *asyh, int size)
> {
> if (size != 0 && size != 256 && size != 1024)
--
Sincerely,
Lyude Paul (she/her)
Software Engineer at Red Hat
Note: I deal with a lot of emails and have a lot of bugs on my plate. If you've
asked me a question, are waiting for a review/merge on a patch, etc. and I
haven't responded in a while, please feel free to send me another email to check
on my status. I don't bite!
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Re: [PATCH 15/30] drm/dp: Add backpointer to drm_device in drm_dp_aux
On Sun, 2021-02-21 at 20:21 +0200, Laurent Pinchart wrote:
> Hi Lyude,
>
> Thank you for the patch.
>
> On Fri, Feb 19, 2021 at 04:53:11PM -0500, Lyude Paul wrote:
> > This is something that we've wanted for a while now: the ability to
> > actually look up the respective drm_device for a given drm_dp_aux struct.
> > This will also allow us to transition over to using the drm_dbg_*() helpers
> > for debug message printing, as we'll finally have a drm_device to reference
> > for doing so.
>
> Isn't it better to use the existing dev field ? If you have multiple DP
> outputs for one DRM device, using the DRM device name in debug messages
> won't tell which output the message corresponds to.
Well the thing is dev won't tell you that either - on most SoCs the DP AUX
adapter is it's own platform device that isn't a child of the DRM device. Also,
that's what the ability to name AUX channels is supposed to be there for.
> > Note that there is one limitation with this - because some DP AUX adapters
> > exist as platform devices which are initialized independently of their
> > respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be
> > non-NULL until drm_dp_aux_register() has been called. We make sure to point
> > this out in the documentation for struct drm_dp_aux.
> >
> > Signed-off-by: Lyude Paul
> > ---
> > drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 1 +
> > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 +
> > drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 1 +
> > drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 1 +
> > drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1 +
> > drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 1 +
> > drivers/gpu/drm/bridge/tc358767.c | 1 +
> > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 1 +
> > drivers/gpu/drm/drm_dp_aux_dev.c | 6 ++
> > drivers/gpu/drm/drm_dp_mst_topology.c | 1 +
> > drivers/gpu/drm/i915/display/intel_dp_aux.c | 1 +
> > drivers/gpu/drm/msm/edp/edp.h | 3 +--
> > drivers/gpu/drm/msm/edp/edp_aux.c | 5 +++--
> > drivers/gpu/drm/msm/edp/edp_ctrl.c | 2 +-
> > drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
> > drivers/gpu/drm/radeon/atombios_dp.c | 1 +
> > drivers/gpu/drm/tegra/dpaux.c | 1 +
> > drivers/gpu/drm/xlnx/zynqmp_dp.c | 1 +
> > include/drm/drm_dp_helper.h | 9 -
> > 19 files changed, 33 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> > b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> > index a3ba9ca11e98..6d35da65e09f 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
> > @@ -188,6 +188,7 @@ void amdgpu_atombios_dp_aux_init(struct amdgpu_connector
> > *amdgpu_connector)
> > {
> > amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
> > amdgpu_connector->ddc_bus->aux.transfer =
> > amdgpu_atombios_dp_aux_transfer;
> > + amdgpu_connector->ddc_bus->aux.drm_dev = amdgpu_connector->base.dev;
> > drm_dp_aux_init(_connector->ddc_bus->aux);
> > amdgpu_connector->ddc_bus->has_aux = true;
> > }
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > index 41b09ab22233..163641b44339 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > @@ -431,6 +431,7 @@ void amdgpu_dm_initialize_dp_connector(struct
> > amdgpu_display_manager *dm,
> > link_index);
> > aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
> > aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
> > + aconnector->dm_dp_aux.aux.drm_dev = dm->ddev;
> >
> > drm_dp_aux_init(>dm_dp_aux.aux);
> > drm_dp_cec_register_connector(>dm_dp_aux.aux,
> > diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> > b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> > index aa6cda458eb9..e33cd077595a 100644
> > --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
> > +++ b/drivers/gpu/drm/bridge/analog
