drm/amd/display: add function for eDP and backlight power on

[HOW&WHY]
Add function to be used for early eDP power on

Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index b0fcabf8baf98b3516d6f8b4e109673e6f1d5fa6..31e1c76ff14c7f8ff5a489cfef0939b6268da447 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -6360,3 +6360,14 @@ bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx)
                        dc_is_dp_signal(pipe_ctx->stream->signal));
 }
 #endif
+
+void edp_panel_backlight_power_on(struct dc_link *link)
+{
+       if (link->connector_signal != SIGNAL_TYPE_EDP)
+               return;
+
+       link->dc->hwss.edp_power_control(link, true);
+       link->dc->hwss.edp_wait_for_hpd_ready(link, true);
+       if (link->dc->hwss.edp_backlight_control)
+               link->dc->hwss.edp_backlight_control(link, true);
+}

diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index a6d3d859754a49586505f3a62fd1501f60d34628..8f50b1ba2058565f071a430966a0a11f16dda812 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -217,4 +217,5 @@ bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 void reset_dp_hpo_stream_encoders_for_link(struct dc_link *link);
 
 bool dp_retrieve_lttpr_cap(struct dc_link *link);
+void edp_panel_backlight_power_on(struct dc_link *link);
 #endif /* __DC_LINK_DP_H__ */