diff options
| 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 | |
| parent | 8f121fe281692ce4b7849ee7be9f3c0dcb079742 (diff) | |
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>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | 2 |
3 files changed, 4 insertions, 2 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; 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 db2d15dfb831..78bf4fae9e0d 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 @@ -1036,7 +1036,7 @@ void dce110_unblank_stream(struct pipe_ctx *pipe_ctx, if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) { link->dc->hwss.edp_backlight_control(link, true); - stream->bl_pwm_level = 0; + stream->bl_pwm_level = EDP_BACKLIGHT_RAMP_DISABLE_LEVEL; } } void dce110_blank_stream(struct pipe_ctx *pipe_ctx) diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h index e764cbad881b..f54d478ffc5c 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h @@ -32,6 +32,8 @@ #include "inc/hw/link_encoder.h" #include "core_status.h" +#define EDP_BACKLIGHT_RAMP_DISABLE_LEVEL 0xFFFFFFFF + enum pipe_gating_control { PIPE_GATING_CONTROL_DISABLE = 0, PIPE_GATING_CONTROL_ENABLE, |