From: Xiaodong Yan <[email protected]> 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, Change-Id: Iac651aa22197bce98b1c7c8537333891b87d474e Signed-off-by: Xiaodong Yan <[email protected]> Reviewed-by: Wenjing Liu <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> --- drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 4 ++++ drivers/gpu/drm/amd/display/dc/dc_types.h | 1 + 2 files changed, 5 insertions(+) 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 { -- 2.17.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
