[PATCH 06/27] drm/amd/display: wait for T9 after backlight off mainlink blank.

[Harry Wentland]

From: Charlene Liu <charlene....@amd.com>

Signed-off-by: Charlene Liu <charlene....@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c          | 3 +--
 drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 ++
 drivers/gpu/drm/amd/display/dc/inc/link_hwss.h              | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 2096f2a179f2..524f4aafa543 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -102,7 +102,7 @@ void dp_enable_link_phy(
        dp_receiver_power_ctrl(link, true);
 }
 
-static bool edp_receiver_ready_T9(struct dc_link *link)
+bool edp_receiver_ready_T9(struct dc_link *link)
 {
        unsigned int tries = 0;
        unsigned char sinkstatus = 0;
@@ -130,7 +130,6 @@ void dp_disable_link_phy(struct dc_link *link, enum 
signal_type signal)
                dp_receiver_power_ctrl(link, false);
 
        if (signal == SIGNAL_TYPE_EDP) {
-               edp_receiver_ready_T9(link);
                link->link_enc->funcs->disable_output(link->link_enc, signal);
                link->dc->hwss.edp_power_control(link, false);
        } else
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 d293cafb6418..fbb84a7ccaf5 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
@@ -928,6 +928,8 @@ void hwss_edp_backlight_control(
         */
        /* dc_service_sleep_in_milliseconds(50); */
        link_transmitter_control(ctx->dc_bios, &cntl);
+       /*edp 1.2*/
+       edp_receiver_ready_T9(link);
 }
 
 void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option)
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h 
b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
index f2b8c9a376d5..46bb201aab6a 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
@@ -51,6 +51,7 @@ void dp_enable_link_phy(
        const struct dc_link_settings *link_settings);
 
 void dp_receiver_power_ctrl(struct dc_link *link, bool on);
+bool edp_receiver_ready_T9(struct dc_link *link);
 
 void dp_disable_link_phy(struct dc_link *link, enum signal_type signal);
 
-- 
2.14.1

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