From: Thierry Reding <tred...@nvidia.com>
Store capabilities in max_* fields and add separate fields for the
currently selected settings.
Cc: Rob Clark <robdcl...@gmail.com>
Reviewed-by: Andrzej Hajda <a.ha...@samsung.com>
Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
drivers/gpu/drm/bridge/tc358767.c | 14 ++++++-------
drivers/gpu/drm/drm_dp_helper.c | 16 ++++++++++-----
drivers/gpu/drm/msm/edp/edp_ctrl.c | 8 ++++----
drivers/gpu/drm/rockchip/cdn-dp-core.c | 8 ++++----
drivers/gpu/drm/rockchip/cdn-dp-reg.c | 13 ++++++------
drivers/gpu/drm/tegra/dpaux.c | 8 ++++----
drivers/gpu/drm/tegra/sor.c | 28 +++++++++++++-------------
include/drm/drm_dp_helper.h | 15 +++++++++-----
8 files changed, 60 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c
b/drivers/gpu/drm/bridge/tc358767.c
index cebc8e620820..733fca7d3829 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -437,7 +437,7 @@ static u32 tc_srcctrl(struct tc_data *tc)
reg |= DP0_SRCCTRL_SCRMBLDIS; /* Scrambler Disabled */
if (tc->link.spread)
reg |= DP0_SRCCTRL_SSCG; /* Spread Spectrum Enable */
- if (tc->link.base.num_lanes == 2)
+ if (tc->link.base.lanes == 2)
reg |= DP0_SRCCTRL_LANES_2; /* Two Main Channel Lanes */
if (tc->link.base.rate != 162000)
reg |= DP0_SRCCTRL_BW27; /* 2.7 Gbps link */
@@ -674,9 +674,9 @@ static int tc_get_display_props(struct tc_data *tc)
tc->link.base.rate = 270000;
}
- if (tc->link.base.num_lanes > 2) {
+ if (tc->link.base.lanes > 2) {
dev_dbg(tc->dev, "Falling to 2 lanes\n");
- tc->link.base.num_lanes = 2;
+ tc->link.base.lanes = 2;
}
ret = drm_dp_dpcd_readb(&tc->aux, DP_MAX_DOWNSPREAD, ®);
@@ -698,7 +698,7 @@ static int tc_get_display_props(struct tc_data *tc)
dev_dbg(tc->dev, "DPCD rev: %d.%d, rate: %s, lanes: %d, framing: %s\n",
tc->link.base.revision >> 4, tc->link.base.revision & 0x0f,
(tc->link.base.rate == 162000) ? "1.62Gbps" : "2.7Gbps",
- tc->link.base.num_lanes,
+ tc->link.base.lanes,
(tc->link.base.capabilities & DP_LINK_CAP_ENHANCED_FRAMING) ?
"enhanced" : "non-enhanced");
dev_dbg(tc->dev, "Downspread: %s, scrambler: %s\n",
@@ -906,7 +906,7 @@ static int tc_main_link_enable(struct tc_data *tc)
/* Setup Main Link */
dp_phy_ctrl = BGREN | PWR_SW_EN | PHY_A0_EN | PHY_M0_EN;
- if (tc->link.base.num_lanes == 2)
+ if (tc->link.base.lanes == 2)
dp_phy_ctrl |= PHY_2LANE;
ret = regmap_write(tc->regmap, DP_PHY_CTRL, dp_phy_ctrl);
@@ -1094,7 +1094,7 @@ static int tc_main_link_enable(struct tc_data *tc)
ret = -ENODEV;
}
- if (tc->link.base.num_lanes == 2) {
+ if (tc->link.base.lanes == 2) {
value = (tmp[0] >> 4) & DP_CHANNEL_EQ_BITS;
if (value != DP_CHANNEL_EQ_BITS) {
@@ -1291,7 +1291,7 @@ static enum drm_mode_status tc_mode_valid(struct
drm_bridge *bridge,
return MODE_CLOCK_HIGH;
req = mode->clock * bits_per_pixel / 8;
- avail = tc->link.base.num_lanes * tc->link.base.rate;
+ avail = tc->link.base.lanes * tc->link.base.rate;
if (req > avail)
return MODE_BAD;
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index f5af71ec1b7d..365de63a02fb 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -342,9 +342,12 @@ static void drm_dp_link_reset(struct drm_dp_link *link)
return;
link->revision = 0;
- link->rate = 0;
- link->num_lanes = 0;
+ link->max_rate = 0;
+ link->max_lanes = 0;
link->capabilities = 0;
+
+ link->rate = 0;
+ link->lanes = 0;
}
/**
@@ -370,12 +373,15 @@ int drm_dp_link_probe(struct drm_dp_aux *aux, struct
drm_dp_link *link)
return err;
link->revision = values[0];
- link->rate = drm_dp_bw_code_to_link_rate(values[1]);
- link->num_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
+ link->max_rate = drm_dp_bw_code_to_link_rate(values[1]);
+ link->max_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
if (values[2] & DP_ENHANCED_FRAME_CAP)
link->capabilities |= DP_LINK_CAP_ENHANCED_FRAMING;
+ link->rate = link->max_rate;
+ link->lanes = link->max_lanes;
+
return 0;
}
EXPORT_SYMBOL(drm_dp_link_probe);
@@ -462,7 +468,7 @@ int drm_dp_link_configure(struct drm_dp_aux *aux, struct
drm_dp_link *link)
int err;
values[0] = drm_dp_link_rate_to_bw_code(link->rate);
- values[1] = link->num_lanes;
+ values[1] = link->lanes;
if (link->capabilities & DP_LINK_CAP_ENHANCED_FRAMING)
values[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c
b/drivers/gpu/drm/msm/edp/edp_ctrl.c
index 7f3dd3ffe2c9..4b31bc30be2c 100644
--- a/drivers/gpu/drm/msm/edp/edp_ctrl.c
+++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c
@@ -403,7 +403,7 @@ static void edp_fill_link_cfg(struct edp_ctrl *ctrl)
u32 prate;
u32 lrate;
u32 bpp;
- u8 max_lane = ctrl->dp_link.num_lanes;
+ u8 max_lane = ctrl->dp_link.max_lanes;
u8 lane;
prate = ctrl->pixel_rate;
@@ -413,7 +413,7 @@ static void edp_fill_link_cfg(struct edp_ctrl *ctrl)
* By default, use the maximum link rate and minimum lane count,
* so that we can do rate down shift during link training.
*/
- ctrl->link_rate = drm_dp_link_rate_to_bw_code(ctrl->dp_link.rate);
+ ctrl->link_rate = drm_dp_link_rate_to_bw_code(ctrl->dp_link.max_rate);
prate *= bpp;
prate /= 8; /* in kByte */
@@ -701,7 +701,7 @@ static int edp_link_rate_down_shift(struct edp_ctrl *ctrl)
rate = ctrl->link_rate;
lane = ctrl->lane_cnt;
- max_lane = ctrl->dp_link.num_lanes;
+ max_lane = ctrl->dp_link.max_lanes;
bpp = ctrl->color_depth * 3;
prate = ctrl->pixel_rate;
@@ -759,7 +759,7 @@ static int edp_do_link_train(struct edp_ctrl *ctrl)
* Set the current link rate and lane cnt to panel. They may have been
* adjusted and the values are different from them in DPCD CAP
*/
- dp_link.num_lanes = ctrl->lane_cnt;
+ dp_link.lanes = ctrl->lane_cnt;
dp_link.rate = drm_dp_bw_code_to_link_rate(ctrl->link_rate);
dp_link.capabilities = ctrl->dp_link.capabilities;
if (drm_dp_link_configure(ctrl->drm_aux, &dp_link) < 0)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c
b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index d505ea7d5384..c500be895e64 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -478,7 +478,7 @@ static int cdn_dp_disable(struct cdn_dp_device *dp)
cdn_dp_clk_disable(dp);
dp->active = false;
dp->link.rate = 0;
- dp->link.num_lanes = 0;
+ dp->link.lanes = 0;
if (!dp->connected) {
kfree(dp->edid);
dp->edid = NULL;
@@ -570,7 +570,7 @@ static bool cdn_dp_check_link_status(struct cdn_dp_device
*dp)
struct cdn_dp_port *port = cdn_dp_connected_port(dp);
u8 sink_lanes = drm_dp_max_lane_count(dp->dpcd);
- if (!port || !dp->link.rate || !dp->link.num_lanes)
+ if (!port || !dp->link.rate || !dp->link.lanes)
return false;
if (cdn_dp_dpcd_read(dp, DP_LANE0_1_STATUS, link_status,
@@ -953,7 +953,7 @@ static void cdn_dp_pd_event_work(struct work_struct *work)
/* Enabled and connected with a sink, re-train if requested */
} else if (!cdn_dp_check_link_status(dp)) {
unsigned int rate = dp->link.rate;
- unsigned int lanes = dp->link.num_lanes;
+ unsigned int lanes = dp->link.lanes;
struct drm_display_mode *mode = &dp->mode;
DRM_DEV_INFO(dp->dev, "Connected with sink. Re-train link\n");
@@ -966,7 +966,7 @@ static void cdn_dp_pd_event_work(struct work_struct *work)
/* If training result is changed, update the video config */
if (mode->clock &&
- (rate != dp->link.rate || lanes != dp->link.num_lanes)) {
+ (rate != dp->link.rate || lanes != dp->link.lanes)) {
ret = cdn_dp_config_video(dp);
if (ret) {
dp->connected = false;
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
index 077c87021908..7b254d0d0ba2 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
@@ -536,7 +536,7 @@ static int cdn_dp_get_training_status(struct cdn_dp_device
*dp)
goto err_get_training_status;
dp->link.rate = drm_dp_bw_code_to_link_rate(status[0]);
- dp->link.num_lanes = status[1];
+ dp->link.lanes = status[1];
err_get_training_status:
if (ret)
@@ -561,7 +561,7 @@ int cdn_dp_train_link(struct cdn_dp_device *dp)
}
DRM_DEV_DEBUG_KMS(dp->dev, "rate:0x%x, lanes:%d\n", dp->link.rate,
- dp->link.num_lanes);
+ dp->link.lanes);
return ret;
}
@@ -659,14 +659,13 @@ int cdn_dp_config_video(struct cdn_dp_device *dp)
do {
tu_size_reg += 2;
symbol = tu_size_reg * mode->clock * bit_per_pix;
- do_div(symbol, dp->link.num_lanes * link_rate * 8);
+ do_div(symbol, dp->link.lanes * link_rate * 8);
rem = do_div(symbol, 1000);
if (tu_size_reg > 64) {
ret = -EINVAL;
DRM_DEV_ERROR(dp->dev,
"tu error, clk:%d, lanes:%d, rate:%d\n",
- mode->clock, dp->link.num_lanes,
- link_rate);
+ mode->clock, dp->link.lanes, link_rate);
goto err_config_video;
}
} while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
@@ -680,7 +679,7 @@ int cdn_dp_config_video(struct cdn_dp_device *dp)
/* set the FIFO Buffer size */
val = div_u64(mode->clock * (symbol + 1), 1000) + link_rate;
- val /= (dp->link.num_lanes * link_rate);
+ val /= (dp->link.lanes * link_rate);
val = div_u64(8 * (symbol + 1), bit_per_pix) - val;
val += 2;
ret = cdn_dp_reg_write(dp, DP_VC_TABLE(15), val);
@@ -833,7 +832,7 @@ static void cdn_dp_audio_config_i2s(struct cdn_dp_device
*dp,
u32 val;
if (audio->channels == 2) {
- if (dp->link.num_lanes == 1)
+ if (dp->link.lanes == 1)
sub_pckt_num = 2;
else
sub_pckt_num = 4;
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index a0f6f9b0d258..ec1688bdff8d 100644
--- a/drivers/gpu/drm/tegra/dpaux.c
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -792,14 +792,14 @@ int drm_dp_aux_train(struct drm_dp_aux *aux, struct
drm_dp_link *link,
if (tp == DP_TRAINING_PATTERN_DISABLE)
return 0;
- for (i = 0; i < link->num_lanes; i++)
+ for (i = 0; i < link->lanes; i++)
values[i] = DP_TRAIN_MAX_PRE_EMPHASIS_REACHED |
DP_TRAIN_PRE_EMPH_LEVEL_0 |
DP_TRAIN_MAX_SWING_REACHED |
DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
err = drm_dp_dpcd_write(aux, DP_TRAINING_LANE0_SET, values,
- link->num_lanes);
+ link->lanes);
if (err < 0)
return err;
@@ -811,13 +811,13 @@ int drm_dp_aux_train(struct drm_dp_aux *aux, struct
drm_dp_link *link,
switch (tp) {
case DP_TRAINING_PATTERN_1:
- if (!drm_dp_clock_recovery_ok(status, link->num_lanes))
+ if (!drm_dp_clock_recovery_ok(status, link->lanes))
return -EAGAIN;
break;
case DP_TRAINING_PATTERN_2:
- if (!drm_dp_channel_eq_ok(status, link->num_lanes))
+ if (!drm_dp_channel_eq_ok(status, link->lanes))
return -EAGAIN;
break;
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index e1669ada0a40..cb94091d98a7 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -649,7 +649,7 @@ static int tegra_sor_dp_train_fast(struct tegra_sor *sor,
if (err < 0)
return err;
- for (i = 0, value = 0; i < link->num_lanes; i++) {
+ for (i = 0, value = 0; i < link->lanes; i++) {
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
SOR_DP_TPG_SCRAMBLER_NONE |
SOR_DP_TPG_PATTERN_TRAIN1;
@@ -670,7 +670,7 @@ static int tegra_sor_dp_train_fast(struct tegra_sor *sor,
value |= SOR_DP_SPARE_MACRO_SOR_CLK;
tegra_sor_writel(sor, value, SOR_DP_SPARE0);
- for (i = 0, value = 0; i < link->num_lanes; i++) {
+ for (i = 0, value = 0; i < link->lanes; i++) {
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
SOR_DP_TPG_SCRAMBLER_NONE |
SOR_DP_TPG_PATTERN_TRAIN2;
@@ -685,7 +685,7 @@ static int tegra_sor_dp_train_fast(struct tegra_sor *sor,
if (err < 0)
return err;
- for (i = 0, value = 0; i < link->num_lanes; i++) {
+ for (i = 0, value = 0; i < link->lanes; i++) {
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
SOR_DP_TPG_SCRAMBLER_GALIOS |
SOR_DP_TPG_PATTERN_NONE;
@@ -912,11 +912,11 @@ static int tegra_sor_compute_config(struct tegra_sor *sor,
u32 num_syms_per_line;
unsigned int i;
- if (!link_rate || !link->num_lanes || !pclk || !config->bits_per_pixel)
+ if (!link_rate || !link->lanes || !pclk || !config->bits_per_pixel)
return -EINVAL;
- output = link_rate * 8 * link->num_lanes;
input = pclk * config->bits_per_pixel;
+ output = link_rate * 8 * link->lanes;
if (input >= output)
return -ERANGE;
@@ -959,7 +959,7 @@ static int tegra_sor_compute_config(struct tegra_sor *sor,
watermark = div_u64(watermark + params.error, f);
config->watermark = watermark + (config->bits_per_pixel / 8) + 2;
num_syms_per_line = (mode->hdisplay * config->bits_per_pixel) *
- (link->num_lanes * 8);
+ (link->lanes * 8);
if (config->watermark > 30) {
config->watermark = 30;
@@ -979,12 +979,12 @@ static int tegra_sor_compute_config(struct tegra_sor *sor,
if (link->capabilities & DP_LINK_CAP_ENHANCED_FRAMING)
config->hblank_symbols -= 3;
- config->hblank_symbols -= 12 / link->num_lanes;
+ config->hblank_symbols -= 12 / link->lanes;
/* compute the number of symbols per vertical blanking interval */
num = (mode->hdisplay - 25) * link_rate;
config->vblank_symbols = div_u64(num, pclk);
- config->vblank_symbols -= 36 / link->num_lanes + 4;
+ config->vblank_symbols -= 36 / link->lanes + 4;
dev_dbg(sor->dev, "blank symbols: H:%u V:%u\n", config->hblank_symbols,
config->vblank_symbols);
@@ -1830,17 +1830,17 @@ static void tegra_sor_edp_enable(struct drm_encoder
*encoder)
/* power DP lanes */
value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0);
- if (link.num_lanes <= 2)
+ if (link.lanes <= 2)
value &= ~(SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_2);
else
value |= SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_2;
- if (link.num_lanes <= 1)
+ if (link.lanes <= 1)
value &= ~SOR_DP_PADCTL_PD_TXD_1;
else
value |= SOR_DP_PADCTL_PD_TXD_1;
- if (link.num_lanes == 0)
+ if (link.lanes == 0)
value &= ~SOR_DP_PADCTL_PD_TXD_0;
else
value |= SOR_DP_PADCTL_PD_TXD_0;
@@ -1849,7 +1849,7 @@ static void tegra_sor_edp_enable(struct drm_encoder
*encoder)
value = tegra_sor_readl(sor, SOR_DP_LINKCTL0);
value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK;
- value |= SOR_DP_LINKCTL_LANE_COUNT(link.num_lanes);
+ value |= SOR_DP_LINKCTL_LANE_COUNT(link.lanes);
tegra_sor_writel(sor, value, SOR_DP_LINKCTL0);
/* start lane sequencer */
@@ -1906,7 +1906,7 @@ static void tegra_sor_edp_enable(struct drm_encoder
*encoder)
dev_err(sor->dev, "failed to configure eDP link: %d\n", err);
rate = drm_dp_link_rate_to_bw_code(link.rate);
- lanes = link.num_lanes;
+ lanes = link.lanes;
value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK;
@@ -1924,7 +1924,7 @@ static void tegra_sor_edp_enable(struct drm_encoder
*encoder)
/* disable training pattern generator */
- for (i = 0; i < link.num_lanes; i++) {
+ for (i = 0; i < link.lanes; i++) {
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
SOR_DP_TPG_SCRAMBLER_GALIOS |
SOR_DP_TPG_PATTERN_NONE;
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 935f331e6e72..9c675bde11e8 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1359,17 +1359,22 @@ int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux,
#define DP_LINK_CAP_ENHANCED_FRAMING (1 << 0)
/**
- * struct drm_dp_link - DP link capabilities
+ * struct drm_dp_link - DP link capabilities and configuration
* @revision: DP specification revision supported on the link
- * @rate: maximum clock rate supported on the link
- * @num_lanes: maximum number of lanes supported on the link
+ * @max_rate: maximum clock rate supported on the link
+ * @max_lanes: maximum number of lanes supported on the link
* @capabilities: bitmask of capabilities supported on the link
+ * @rate: currently configured link rate
+ * @lanes: currently configured number of lanes
*/
struct drm_dp_link {
unsigned char revision;
- unsigned int rate;
- unsigned int num_lanes;
+ unsigned int max_rate;
+ unsigned int max_lanes;
unsigned long capabilities;
+
+ unsigned int rate;
+ unsigned int lanes;
};
int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link);
--
2.22.0
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