From d104c169112f1a5d885dc6a8f8a015d058d13f44 Mon Sep 17 00:00:00 2001 From: Hugo Hu Date: Fri, 15 Jun 2018 15:49:55 -0400 Subject: [PATCH 4917/5725] drm/amd/display: Patch for extend time to panel poweron. [WHY] In eDP spec, the min duration in LCDVDD on-off-on sequence should be 500ms, some BOE panels need 700ms to pass. [HOW] Add patch to wait more time when eDP power on. Signed-off-by: Hugo Hu Reviewed-by: Charlene Liu Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dc_types.h | 1 + drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 9 ++++++--- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index 59bf0d5..58a6ef8 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -192,6 +192,7 @@ union display_content_support { struct dc_panel_patch { unsigned int dppowerup_delay; + unsigned int extra_t12_ms; }; struct dc_edid_caps { diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index b0bcc9a..286b6071 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -871,10 +871,13 @@ void hwss_edp_power_control( unsigned long long wait_time_ms = 0; /* max 500ms from LCDVDD off to on */ + unsigned long long edp_poweroff_time_ms = + 500 + link->local_sink->edid_caps.panel_patch.extra_t12_ms; + if (link->link_trace.time_stamp.edp_poweroff == 0) - wait_time_ms = 500; - else if (duration_in_ms < 500) - wait_time_ms = 500 - duration_in_ms; + wait_time_ms = edp_poweroff_time_ms; + else if (duration_in_ms < edp_poweroff_time_ms) + wait_time_ms = edp_poweroff_time_ms - duration_in_ms; if (wait_time_ms) { msleep(wait_time_ms); -- 2.7.4