diff options
| author | Baihan Li <libaihan@huawei.com> | 2025-12-10 10:37:56 +0800 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-01-20 10:53:14 +0200 |
| commit | 3906e7a3b26d683868704fe262db443207f392fe (patch) | |
| tree | 417ee6344402cf0f540b7ccd67ba6f7949711815 /tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git | |
| parent | 7d0507772406e129329983b8b807e5b499bd74fd (diff) | |
drm/hisilicon/hibmc: fix dp probabilistical detect errors after HPD irq
The issue is that drm_connector_helper_detect_from_ddc() returns wrong
status when plugging or unplugging the monitor, which may cause the link
failed err.[0] Use HPD pin status in DP's detect_ctx() for real physical
monitor in/out, and implement a complete DP detection including read DPCD,
check if it's a branch device and its sink count for different situations.
[0]:
hibme-drm 0000:83:00.0: [drm] *ERROR* channel equalization failed 5 times
hibme-drm 0000:83:00.0: [drm] *ERROR* channel equalization failed 5 times
hibme-drm 0000:83:00.0: [drm] *ERROR* dp link training failed, ret: -16
hibmc-drm 0000:83:00.0: [drm] *ERROR* hibme dp mode set failed: -16
Fixes: 3c7623fb5bb6 ("drm/hisilicon/hibmc: Enable this hot plug detect of irq feature")
Signed-off-by: Baihan Li <libaihan@huawei.com>
Signed-off-by: Yongbang Shi <shiyongbang@huawei.com>
Reviewed-by: Tao Tian <tiantao6@hisilicon.com>
Link: https://patch.msgid.link/20251210023759.3944834-2-shiyongbang@huawei.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Diffstat (limited to 'tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions