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| author | Xiaodong Yan <Xiaodong.Yan@amd.com> | 2019-01-17 00:18:01 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-02-05 21:16:23 -0500 |
| commit | a4f1d2b8a543e136a0c945ca85d5d64ab471ac2a (patch) | |
| tree | c73ab5894f9b7f0e01b3ce9240ba1547be145d3e | |
| parent | 385d7eeaf14752b9d8180feb4bc52730b6dc99ce (diff) | |
| download | linux-stable-a4f1d2b8a543e136a0c945ca85d5d64ab471ac2a.tar.gz linux-stable-a4f1d2b8a543e136a0c945ca85d5d64ab471ac2a.tar.bz2 linux-stable-a4f1d2b8a543e136a0c945ca85d5d64ab471ac2a.zip | |
drm/amd/display: Add monitor patch for backlight off
[Why]
Different panel need different time from backlight disable to end of valid video data,
if the time is too short, panel will flash when dpms off
[How]
Add monitor patch to control the time from backlight disable to end of valid video data,
Signed-off-by: Xiaodong Yan <Xiaodong.Yan@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_types.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index 16d441d3af8a..f7f7515f65f4 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -119,6 +119,10 @@ bool edp_receiver_ready_T9(struct dc_link *link) break; udelay(100); //MAx T9 } while (++tries < 50); + + if (link->local_sink->edid_caps.panel_patch.extra_delay_backlight_off > 0) + udelay(link->local_sink->edid_caps.panel_patch.extra_delay_backlight_off * 1000); + return result; } bool edp_receiver_ready_T7(struct dc_link *link) diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index 56e7f3dab15a..da2009a108cf 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -201,6 +201,7 @@ union display_content_support { struct dc_panel_patch { unsigned int dppowerup_delay; unsigned int extra_t12_ms; + unsigned int extra_delay_backlight_off; }; struct dc_edid_caps { |