From 5a49245cfc122eeb433e2710f61a5985246e01b9 Mon Sep 17 00:00:00 2001
From: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Date: Mon, 15 Nov 2021 17:21:51 -0500
Subject: drm/amd/display: add function for eDP and backlight power on
Git-commit: 0a043904187b31fc34369d31569186a5ded23e20
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
[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>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 11 +++++++++++
drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 1 +
2 files changed, 12 insertions(+)
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 b0fcabf8baf9..31e1c76ff14c 100644
--- 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 a6d3d859754a..8f50b1ba2058 100644
--- 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__ */
--
2.38.1