[PATCH 09/33] drm/amd/display: Clear dmps off for eDP when resume.

[Harry Wentland]

From: Yongqiang Sun <yongqiang.sun at amd.com>

This patch fixed secondary screen only S4 resume, eDP is unintentionally
light up due to incorrect dpms off flag.

When entering S4, dpms off flags are set to true via
set power state. During resume, eDP is light up by vbios, so the flags
should be changed to false to match the real state.
By change the flag properly, eDP is able to be turned off properly as per
OS request.

This change may affect S3/S4 Shut down resume IOIC, need to verify
those cases.

Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c               | 4 ++++
 drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 6 ++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 556b155ba5af..b7540152005b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2297,9 +2297,13 @@ void core_link_enable_stream(
 	if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP &&
 		core_dc->apply_edp_fast_boot_optimization) {
 		core_dc->apply_edp_fast_boot_optimization = false;
+		pipe_ctx->stream->dpms_off = false;
 		return;
 	}
 
+	if (pipe_ctx->stream->dpms_off)
+		return;
+
 	status = enable_link(state, pipe_ctx);
 
 	if (status != DC_OK) {
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 0422c72a7579..73e0bcd5ba8f 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
@@ -1320,10 +1320,8 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 
 	resource_build_info_frame(pipe_ctx);
 	dce110_update_info_frame(pipe_ctx);
-	if (!pipe_ctx_old->stream) {
-		if (!pipe_ctx->stream->dpms_off)
-			core_link_enable_stream(context, pipe_ctx);
-	}
+	if (!pipe_ctx_old->stream)
+		core_link_enable_stream(context, pipe_ctx);
 
 	pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != 0;
 
-- 
2.14.1