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| author | Sherry <Yao.Wang1@amd.com> | 2020-11-11 00:34:22 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-11-24 12:07:52 -0500 |
| commit | 014427adc5565a0b46fd3ef6719167a31f04d764 (patch) | |
| tree | 21c9b276727354fa6990824ab22e6ac368b19b03 /drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | |
| parent | 2208f39c750972ad3796b4353ccf9f7c8636931c (diff) | |
| download | linux-014427adc5565a0b46fd3ef6719167a31f04d764.tar.gz linux-014427adc5565a0b46fd3ef6719167a31f04d764.tar.bz2 linux-014427adc5565a0b46fd3ef6719167a31f04d764.zip | |
drm/amd/display: change hw sequence
[Why]
t9 delay func is called twice after setting power off, the unexpected
action results in a doubling of the added 140ms t9 delay
[How]
If the backlight has been turned off, does not turn it off again
Signed-off-by: Sherry <Yao.Wang1@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 13 |
1 files changed, 8 insertions, 5 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 9f56887029ca..90c85b3e859b 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 @@ -939,12 +939,15 @@ void dce110_edp_backlight_control( return; } - if (enable && link->panel_cntl && - link->panel_cntl->funcs->is_panel_backlight_on(link->panel_cntl)) { - DC_LOG_HW_RESUME_S3( - "%s: panel already powered up. Do nothing.\n", + if (link->panel_cntl) { + bool is_backlight_on = link->panel_cntl->funcs->is_panel_backlight_on(link->panel_cntl); + + if ((enable && is_backlight_on) || (!enable && !is_backlight_on)) { + DC_LOG_HW_RESUME_S3( + "%s: panel already powered up/off. Do nothing.\n", __func__); - return; + return; + } } /* Send VBIOS command to control eDP panel backlight */ |