[PATCH 14/24] drm/amd/display: Remove unnecessary eDP power down

[Tom Chung]

From: Yiling Chen <yi-ling.chen2 at amd.com>

[why]
When first time of link training is fail,
eDP would be powered down and
would not be powered up for next retry link training.
It causes that all of retry link linking would be fail.

[how]
We has extracted both power up and down sequence from
enable/disable link output function before DCN32.
We remov eDP power down in dcn32_disable_link_output().

Reviewed-by: Charlene Liu <charlene.liu at amd.com>
Signed-off-by: Yiling Chen <yi-ling.chen2 at amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung at amd.com>
---
 .../gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c  | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
index 2e6ecf939fbd..ee4de9ddfef4 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
@@ -1399,12 +1399,12 @@ void dcn32_disable_link_output(struct dc_link *link,
 
 	link_hwss->disable_link_output(link, link_res, signal);
 	link->phy_state.symclk_state = SYMCLK_OFF_TX_OFF;
-
-	if (signal == SIGNAL_TYPE_EDP &&
-			link->dc->hwss.edp_power_control &&
-			!link->skip_implict_edp_power_control)
-		link->dc->hwss.edp_power_control(link, false);
-	else if (dmcu != NULL && dmcu->funcs->unlock_phy)
+	/*
+	 * Add the logic to extract BOTH power up and power down sequences
+	 * from enable/disable link output and only call edp panel control
+	 * in enable_link_dp and disable_link_dp once.
+	 */
+	if (dmcu != NULL && dmcu->funcs->unlock_phy)
 		dmcu->funcs->unlock_phy(dmcu);
 
 	dc->link_srv->dp_trace_source_sequence(link, DPCD_SOURCE_SEQ_AFTER_DISABLE_LINK_PHY);
-- 
2.34.1