Commit 5282cbe3 authored by Yongqiang Sun's avatar Yongqiang Sun Committed by Alex Deucher

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: default avatarYongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: default avatarEric Yang <eric.yang2@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 8f121fe2
......@@ -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;
......
......@@ -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)
......
......@@ -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,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment