diff options
| author | Hugo Hu <hugo.hu@amd.com> | 2020-10-06 12:21:00 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-11-02 23:31:10 +0300 |
| commit | 3a372bed1e337efa450d8288bc75cfc9237b7bad (patch) | |
| tree | 7ba10106226aa2010cca196621c2a2f4d062bdad /drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | |
| parent | cae78e0331459643e21b982e4833a6525a43e498 (diff) | |
| download | linux-3a372bed1e337efa450d8288bc75cfc9237b7bad.tar.xz | |
drm/amd/display: correct eDP T9 delay
[Why]
The current end of T9 delay is relay on polling
sink status by DPCD. But the polling for sink
status change after NoVideoStream_flag set to 0.
[How]
Add function edp_add_delay_for_T9 to add T9 delay.
Move the sink status polling after blank.
Signed-off-by: Hugo Hu <hugo.hu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 13 |
1 files changed, 8 insertions, 5 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 11a619befb42..124ce215fca5 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 @@ -156,6 +156,13 @@ void dp_enable_link_phy( dp_receiver_power_ctrl(link, true); } +void edp_add_delay_for_T9(struct dc_link *link) +{ + if (link->local_sink && + 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); +} + bool edp_receiver_ready_T9(struct dc_link *link) { unsigned int tries = 0; @@ -165,7 +172,7 @@ bool edp_receiver_ready_T9(struct dc_link *link) result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev)); - /* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/ + /* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/ if (result == DC_OK && edpRev >= DP_EDP_12) { do { sinkstatus = 1; @@ -178,10 +185,6 @@ bool edp_receiver_ready_T9(struct dc_link *link) } while (++tries < 50); } - if (link->local_sink && - 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) |