shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

drm/bridge: analogix_dp: Fix TX lane count & rate setup

Browse Source 
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
Change-Id: Idca54fe6c1bd4317da6c4bb65e87df3d4aa07c6c
This commit is contained in:
Wyon Bi
2022-08-02 07:57:38 +00:00
committed by Tao Huang
parent 38fbb24eeb
commit 0c71219bf3
1 changed files with 3 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
View File

@@ -689,19 +689,9 @@ static int analogix_dp_full_link_train(struct analogix_dp_device *dp,
analogix_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate);
analogix_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
if ((dp->link_train.link_rate != DP_LINK_BW_1_62) &&
(dp->link_train.link_rate != DP_LINK_BW_2_7) &&
(dp->link_train.link_rate != DP_LINK_BW_5_4)) {
dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
dp->link_train.link_rate);
dp->link_train.link_rate = DP_LINK_BW_1_62;
}
if (dp->link_train.lane_count == 0) {
dev_err(dp->dev, "Rx Max Lane count is abnormal :%x !\n",
dp->link_train.lane_count);
dp->link_train.lane_count = (u8)LANE_COUNT1;
}
/* Setup TX lane count & rate */
dp->link_train.lane_count = min_t(u32, dp->link_train.lane_count, max_lanes);
dp->link_train.link_rate = min_t(u32, dp->link_train.link_rate, max_rate);
if (!analogix_dp_bandwidth_ok(dp, &video->mode,
drm_dp_bw_code_to_link_rate(dp->link_train.link_rate),
@@ -713,12 +703,6 @@ static int analogix_dp_full_link_train(struct analogix_dp_device *dp,
drm_dp_dpcd_readb(&dp->aux, DP_MAX_DOWNSPREAD, &dpcd);
dp->link_train.ssc = !!(dpcd & DP_MAX_DOWNSPREAD_0_5);
/* Setup TX lane count & rate */
if (dp->link_train.lane_count > max_lanes)
dp->link_train.lane_count = max_lanes;
if (dp->link_train.link_rate > max_rate)
dp->link_train.link_rate = max_rate;
/* All DP analog module power up */
analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);