From: Eric Yang <Eric.Yang2@xxxxxxx>
[why]
Previously we incorrectly skipped backlight control when stream is
present but dpms_off = true. This causes backlight to remain on in
the we boot up or resume into a external display only configuration
where VBIOS posted on the eDP.
[How]
Add dpms_off into the condition for edp need to turn off.
Signed-off-by: Eric Yang <Eric.Yang2@xxxxxxx>
Reviewed-by: Yongqiang Sun <yongqiang.sun@xxxxxxx>
Acked-by: Leo Li <sunpeng.li@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
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 97796fa2..026d973 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
@@ -1520,7 +1520,7 @@ static struct dc_link *get_link_for_edp(struct dc *dc)
return NULL;
}
-static struct dc_link *get_link_for_edp_not_in_use(
+static struct dc_link *get_link_for_edp_to_turn_off(
struct dc *dc,
struct dc_state *context)
{
@@ -1529,8 +1529,12 @@ static struct dc_link *get_link_for_edp_not_in_use(
/* check if eDP panel is suppose to be set mode, if yes, no need to disable */
for (i = 0; i < context->stream_count; i++) {
- if (context->streams[i]->signal == SIGNAL_TYPE_EDP)
- return NULL;
+ if (context->streams[i]->signal == SIGNAL_TYPE_EDP) {
+ if (context->streams[i]->dpms_off == true)
+ return context->streams[i]->sink->link;
+ else
+ return NULL;
+ }
}
/* check if there is an eDP panel not in use */
@@ -1572,7 +1576,7 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
}
if (can_edp_fast_boot_optimize)
- edp_link_to_turnoff = get_link_for_edp_not_in_use(dc, context);
+ edp_link_to_turnoff = get_link_for_edp_to_turn_off(dc, context);
/* if OS doesn't light up eDP and eDP link is available, we want to disable
* If resume from S4/S5, should optimization.
--
2.7.4
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