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From d104c169112f1a5d885dc6a8f8a015d058d13f44 Mon Sep 17 00:00:00 2001
From: Hugo Hu <hugo.hu@amd.com>
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 <hugo.hu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
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
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