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| author | Yongqiang Sun <yongqiang.sun@amd.com> | 2018-03-27 10:05:10 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-04-11 13:08:08 -0500 |
| commit | 5282cbe32ea5b8008f86a743922f018287113e2c (patch) | |
| tree | e13eb115e8785c6f561b5399a01e2066d254aa2e /drivers/gpu/drm/amd/display/dc/core/dc_link.c | |
| parent | 8f121fe281692ce4b7849ee7be9f3c0dcb079742 (diff) | |
| download | linux-5282cbe32ea5b8008f86a743922f018287113e2c.tar.bz2 | |
drm/amd/display: Change disable backlight ramp change threshold from 0 to maximum value.
Instead of user set brightness with range of percentage,
HLK test set brightness level with range of normal, this will result in
HLK test case set brightness from 0 to 255, DC set brightness with ramp is 0,
and disabled ramp change which will fail the HLK test.
Fix:
In case of unblank stream and turn on edp, change brightness level in
stream to 0xFFFFFFFF(actural maximum level is 0xFF), use that value as
a flag to recogonize this the case of resume from S3.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index d9efdd926145..0cd286f8eaa0 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1982,7 +1982,7 @@ bool dc_link_set_backlight_level(const struct dc_link *link, uint32_t level, return false; if (stream) { - if (stream->bl_pwm_level == 0) + if (stream->bl_pwm_level == EDP_BACKLIGHT_RAMP_DISABLE_LEVEL) frame_ramp = 0; ((struct dc_stream_state *)stream)->bl_pwm_level = level; |