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drm/amd/display: fix backlight not off at resume from S4 

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Charlene Liu 2018-01-08 16:47:39 -05:00 committed by Alex Deucher
parent 3be1406a72
commit cf1835f03f
1 changed files with 27 additions and 6 deletions
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33
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
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@ -914,6 +914,7 @@ void hwss_edp_backlight_control(
/*todo: unhardcode*/
cntl.lanes_number = LANE_COUNT_FOUR;
cntl.hpd_sel = link->link_enc->hpd_source;
cntl.signal = SIGNAL_TYPE_EDP;
/* For eDP, the following delays might need to be considered
* after link training completed:
@ -1407,7 +1408,24 @@ static void disable_vga_and_power_gate_all_controllers(
}
}
static struct dc_link *get_link_for_eDP_not_in_use(
static struct dc_link *get_link_for_edp(
struct dc *dc)
{
int i;
struct dc_link *link = NULL;
/* check if there is an eDP panel not in use */
for (i = 0; i < dc->link_count; i++) {
if (dc->links[i]->local_sink &&
dc->links[i]->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
link = dc->links[i];
break;
}
}
return link;
}
static struct dc_link *get_link_for_edp_not_in_use(
struct dc *dc,
struct dc_state *context)
{
@ -1441,16 +1459,19 @@ static struct dc_link *get_link_for_eDP_not_in_use(
*/
void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
{
struct dc_link *eDP_link_to_turnoff = get_link_for_eDP_not_in_use(dc, context);
struct dc_link *edp_link_to_turnoff = get_link_for_edp_not_in_use(dc, context);
if (eDP_link_to_turnoff)
dc->hwss.edp_backlight_control(eDP_link_to_turnoff, false);
struct dc_link *edp_link = get_link_for_edp(dc);
if (edp_link)
/*we need turn off backlight before DP_blank and encoder powered down*/
dc->hwss.edp_backlight_control(edp_link, false);
power_down_all_hw_blocks(dc);
disable_vga_and_power_gate_all_controllers(dc);
if (eDP_link_to_turnoff)
dc->hwss.edp_power_control(eDP_link_to_turnoff, false);
if (edp_link_to_turnoff)
dc->hwss.edp_power_control(edp_link_to_turnoff, false);
bios_set_scratch_acc_mode_change(dc->ctx->dc_bios);
}