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drm/bridge: analogix_dp: Apply DP helper API drm_dp_dpcd_read_link_status()

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Use existing DP helper API to read link status related DPCDs.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20251110085823.1197472-2-damon.ding@rock-chips.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Damon Ding
2025-11-10 16:58:20 +08:00
committed by Luca Ceresoli
parent 05d09e7f28
commit b97a424b09
1 changed files with 6 additions and 7 deletions
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13
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
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@@ -384,13 +384,13 @@ static int analogix_dp_process_clock_recovery(struct analogix_dp_device *dp)
{
int lane, lane_count, retval;
u8 voltage_swing, pre_emphasis, training_lane;
u8 link_status[2], adjust_request[2];
u8 link_status[DP_LINK_STATUS_SIZE], adjust_request[2];
usleep_range(100, 101);
lane_count = dp->link_train.lane_count;
retval = drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status, 2);
retval = drm_dp_dpcd_read_link_status(&dp->aux, link_status);
if (retval < 0)
return retval;
@@ -450,13 +450,13 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
{
int lane_count, retval;
u32 reg;
u8 link_align, link_status[2], adjust_request[2];
u8 link_align, link_status[DP_LINK_STATUS_SIZE], adjust_request[2];
usleep_range(400, 401);
lane_count = dp->link_train.lane_count;
retval = drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status, 2);
retval = drm_dp_dpcd_read_link_status(&dp->aux, link_status);
if (retval < 0)
return retval;
@@ -615,7 +615,7 @@ static int analogix_dp_full_link_train(struct analogix_dp_device *dp,
static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
{
int ret;
u8 link_align, link_status[2];
u8 link_align, link_status[DP_LINK_STATUS_SIZE];
analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
ret = analogix_dp_wait_pll_locked(dp);
@@ -657,8 +657,7 @@ static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
return ret;
}
ret = drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status,
2);
ret = drm_dp_dpcd_read_link_status(&dp->aux, link_status);
if (ret < 0) {
DRM_DEV_ERROR(dp->dev, "Read link status failed %d\n",
ret);