Re: [PATCH v5 4/4] drm/amdgpu: Set FreeSync state using drm VRR properties
On 2018-10-12 12:44 p.m., Nicholas Kazlauskas wrote:
> Support for AMDGPU specific FreeSync properties and ioctls are dropped
> from amdgpu_dm in favor of supporting drm variable refresh rate
> properties.
>
> The notify_freesync and set_freesync_property functions are dropped
> from amdgpu_display_funcs.
>
> The drm vrr_capable property is now attached to any DP/HDMI connector.
> Its value is updated accordingly to the connector's FreeSync capabiltiy.
>
> The freesync_enable logic and ioctl control has has been dropped in
> favor of utilizing the vrr_enabled on the drm CRTC. This allows for more
> fine grained atomic control over which CRTCs should support variable
> refresh rate.
>
> To handle state changes for vrr_enabled it was easiest to drop the
> forced modeset on freesync_enabled change. This patch now performs the
> required stream updates when planes are flipped.
>
> This is done for a few reasons:
>
> (1) VRR stream updates can be done in the fast update path
>
> (2) amdgpu_dm_atomic_check would need to be hacked apart to check
> desired variable refresh state and capability before the CRTC
> disable pass.
>
> (3) Performing VRR stream updates on-flip is needed for enabling BTR
> support.
>
> VRR packets and timing adjustments are now tracked and compared to
> previous values sent to the hardware.
>
> Signed-off-by: Nicholas Kazlauskas
Reviewed-by: Harry Wentland
Harry
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 7 -
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 255 +-
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 +-
> 3 files changed, 138 insertions(+), 131 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> index b9e9e8b02fb7..0cbe867ec375 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> @@ -295,13 +295,6 @@ struct amdgpu_display_funcs {
> uint16_t connector_object_id,
> struct amdgpu_hpd *hpd,
> struct amdgpu_router *router);
> - /* it is used to enter or exit into free sync mode */
> - int (*notify_freesync)(struct drm_device *dev, void *data,
> -struct drm_file *filp);
> - /* it is used to allow enablement of freesync mode */
> - int (*set_freesync_property)(struct drm_connector *connector,
> - struct drm_property *property,
> - uint64_t val);
>
>
> };
> 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 e224f23e2215..f6af388cc32d 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -1802,72 +1802,6 @@ static void dm_bandwidth_update(struct amdgpu_device
> *adev)
> /* TODO: implement later */
> }
>
> -static int amdgpu_notify_freesync(struct drm_device *dev, void *data,
> - struct drm_file *filp)
> -{
> - struct drm_atomic_state *state;
> - struct drm_modeset_acquire_ctx ctx;
> - struct drm_crtc *crtc;
> - struct drm_connector *connector;
> - struct drm_connector_state *old_con_state, *new_con_state;
> - int ret = 0;
> - uint8_t i;
> - bool enable = false;
> -
> - drm_modeset_acquire_init(, 0);
> -
> - state = drm_atomic_state_alloc(dev);
> - if (!state) {
> - ret = -ENOMEM;
> - goto out;
> - }
> - state->acquire_ctx =
> -
> -retry:
> - drm_for_each_crtc(crtc, dev) {
> - ret = drm_atomic_add_affected_connectors(state, crtc);
> - if (ret)
> - goto fail;
> -
> - /* TODO rework amdgpu_dm_commit_planes so we don't need this */
> - ret = drm_atomic_add_affected_planes(state, crtc);
> - if (ret)
> - goto fail;
> - }
> -
> - for_each_oldnew_connector_in_state(state, connector, old_con_state,
> new_con_state, i) {
> - struct dm_connector_state *dm_new_con_state =
> to_dm_connector_state(new_con_state);
> - struct drm_crtc_state *new_crtc_state;
> - struct amdgpu_crtc *acrtc =
> to_amdgpu_crtc(dm_new_con_state->base.crtc);
> - struct dm_crtc_state *dm_new_crtc_state;
> -
> - if (!acrtc) {
> - ASSERT(0);
> - continue;
> - }
> -
> - new_crtc_state = drm_atomic_get_new_crtc_state(state,
> >base);
> - dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
> -
> - dm_new_crtc_state->freesync_enabled = enable;
> - }
> -
> - ret = drm_atomic_commit(state);
> -
> -fail:
> - if (ret == -EDEADLK) {
> - drm_atomic_state_clear(state);
> - drm_modeset_backoff();
> -
[PATCH v5 4/4] drm/amdgpu: Set FreeSync state using drm VRR properties
Support for AMDGPU specific FreeSync properties and ioctls are dropped
from amdgpu_dm in favor of supporting drm variable refresh rate
properties.
The notify_freesync and set_freesync_property functions are dropped
from amdgpu_display_funcs.
The drm vrr_capable property is now attached to any DP/HDMI connector.
Its value is updated accordingly to the connector's FreeSync capabiltiy.
The freesync_enable logic and ioctl control has has been dropped in
favor of utilizing the vrr_enabled on the drm CRTC. This allows for more
fine grained atomic control over which CRTCs should support variable
refresh rate.
To handle state changes for vrr_enabled it was easiest to drop the
forced modeset on freesync_enabled change. This patch now performs the
required stream updates when planes are flipped.
This is done for a few reasons:
(1) VRR stream updates can be done in the fast update path
(2) amdgpu_dm_atomic_check would need to be hacked apart to check
desired variable refresh state and capability before the CRTC
disable pass.
(3) Performing VRR stream updates on-flip is needed for enabling BTR
support.
VRR packets and timing adjustments are now tracked and compared to
previous values sent to the hardware.
Signed-off-by: Nicholas Kazlauskas
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 7 -
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 255 +-
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 +-
3 files changed, 138 insertions(+), 131 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index b9e9e8b02fb7..0cbe867ec375 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -295,13 +295,6 @@ struct amdgpu_display_funcs {
uint16_t connector_object_id,
struct amdgpu_hpd *hpd,
struct amdgpu_router *router);
- /* it is used to enter or exit into free sync mode */
- int (*notify_freesync)(struct drm_device *dev, void *data,
- struct drm_file *filp);
- /* it is used to allow enablement of freesync mode */
- int (*set_freesync_property)(struct drm_connector *connector,
-struct drm_property *property,
-uint64_t val);
};
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 e224f23e2215..f6af388cc32d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1802,72 +1802,6 @@ static void dm_bandwidth_update(struct amdgpu_device
*adev)
/* TODO: implement later */
}
-static int amdgpu_notify_freesync(struct drm_device *dev, void *data,
- struct drm_file *filp)
-{
- struct drm_atomic_state *state;
- struct drm_modeset_acquire_ctx ctx;
- struct drm_crtc *crtc;
- struct drm_connector *connector;
- struct drm_connector_state *old_con_state, *new_con_state;
- int ret = 0;
- uint8_t i;
- bool enable = false;
-
- drm_modeset_acquire_init(, 0);
-
- state = drm_atomic_state_alloc(dev);
- if (!state) {
- ret = -ENOMEM;
- goto out;
- }
- state->acquire_ctx =
-
-retry:
- drm_for_each_crtc(crtc, dev) {
- ret = drm_atomic_add_affected_connectors(state, crtc);
- if (ret)
- goto fail;
-
- /* TODO rework amdgpu_dm_commit_planes so we don't need this */
- ret = drm_atomic_add_affected_planes(state, crtc);
- if (ret)
- goto fail;
- }
-
- for_each_oldnew_connector_in_state(state, connector, old_con_state,
new_con_state, i) {
- struct dm_connector_state *dm_new_con_state =
to_dm_connector_state(new_con_state);
- struct drm_crtc_state *new_crtc_state;
- struct amdgpu_crtc *acrtc =
to_amdgpu_crtc(dm_new_con_state->base.crtc);
- struct dm_crtc_state *dm_new_crtc_state;
-
- if (!acrtc) {
- ASSERT(0);
- continue;
- }
-
- new_crtc_state = drm_atomic_get_new_crtc_state(state,
>base);
- dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
-
- dm_new_crtc_state->freesync_enabled = enable;
- }
-
- ret = drm_atomic_commit(state);
-
-fail:
- if (ret == -EDEADLK) {
- drm_atomic_state_clear(state);
- drm_modeset_backoff();
- goto retry;
- }
-
- drm_atomic_state_put(state);
-
-out:
- drm_modeset_drop_locks();
- drm_modeset_acquire_fini();
- return ret;
-}
static const struct amdgpu_display_funcs dm_display_funcs = {
