From 0a043904187b31fc34369d31569186a5ded23e20 Mon Sep 17 00:00:00 2001 From: Evgenii Krasnikov Date: Mon, 15 Nov 2021 17:21:51 -0500 Subject: [PATCH] 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 Acked-by: Bhawanpreet Lakha Signed-off-by: Evgenii Krasnikov Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- 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__ */ -- 2.50.1