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drm/amd/display: fix brightness level after resume from suspend 

Adding missing call to cache current backlight values.
Otherwise the brightness resets to default value on resume.

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2018-03-29 10:56:17 -04:00 committed by Alex Deucher
parent af2ac32608
commit c3d7bad88e
3 changed files with 18 additions and 1 deletions
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13
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -1997,6 +1997,19 @@ bool dc_link_set_backlight_level(const struct dc_link *link, uint32_t level,
return true;
}
bool dc_link_set_abm_disable(const struct dc_link *link)
{
struct dc *core_dc = link->ctx->dc;
struct abm *abm = core_dc->res_pool->abm;
if ((abm == NULL) || (abm->funcs->set_backlight_level == NULL))
return false;
abm->funcs->set_abm_immediate_disable(abm);
return true;
}
bool dc_link_set_psr_enable(const struct dc_link *link, bool enable, bool wait)
{
struct dc *core_dc = link->ctx->dc;

2
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@ -132,6 +132,8 @@ static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_
bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t level,
uint32_t frame_ramp, const struct dc_stream_state *stream);
bool dc_link_set_abm_disable(const struct dc_link *dc_link);
bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable, bool wait);
bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);

4
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
View File

@ -1016,8 +1016,10 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->sink->link;
if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP)
if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
link->dc->hwss.edp_backlight_control(link, false);
dc_link_set_abm_disable(link);
}
if (dc_is_dp_signal(pipe_ctx->stream->signal))
pipe_ctx->stream_res.stream_enc->funcs->dp_blank(pipe_ctx->stream_res.stream_enc);