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From 175d8b1b5391be3686d218d400c37af79b202a18 Mon Sep 17 00:00:00 2001
From: Charlene Liu <charlene.liu@amd.com>
Date: Mon, 8 Jan 2018 16:47:39 -0500
Subject: [PATCH 3257/4131] 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>
---
.../amd/display/dc/dce110/dce110_hw_sequencer.c | 33 ++++++++++++++++++----
1 file changed, 27 insertions(+), 6 deletions(-)
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 d036d1d..f982f23 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
@@ -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);
+
+ struct dc_link *edp_link = get_link_for_edp(dc);
- if (eDP_link_to_turnoff)
- dc->hwss.edp_backlight_control(eDP_link_to_turnoff, false);
+ 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);
}
--
2.7.4
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