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authorHugo Hu <hugo.hu@amd.com>2018-06-15 15:49:55 -0400
committerAlex Deucher <alexander.deucher@amd.com>2018-07-13 14:49:29 -0500
commitff58798725ba9c747cd934e2623f7a0610b3f0dd (patch)
treeb69a54d636fe62f89685bf55b7c3b96f43c6577a /drivers/gpu
parent39a9f4d89e123b62c8a5cc26696ea8afa98e0e88 (diff)
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>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dc_types.h1
-rw-r--r--drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c9
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 03bf9eee9a04..8c6eb78b0c3b 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 5b41cbe06f59..7227cfddb352 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);