From: Muyuan Yang <muyuan.yang@amd.com>
Date: Wed, 5 Jun 2024 14:24:59 +0000 (-0400)
Subject: drm/amd/display: Change Brightness Control Priority
X-Git-Tag: v6.13-rc1~122^2~15^2~207
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e1b58b2b116af57a69ba5d8574c9e960b2b0b2e8;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/display: Change Brightness Control Priority

Prioritize Aux-based over PWM-based brightness control
for more types of panels and introduce a new structure
to store and manage the type of brightness control used.

Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Signed-off-by: Muyuan Yang <muyuan.yang@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@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/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 8878a770c3765..059e5f4ede492 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1786,6 +1786,7 @@ struct dc_link {
 	// BW ALLOCATON USB4 ONLY
 	struct dc_dpia_bw_alloc dpia_bw_alloc_config;
 	bool skip_implict_edp_power_control;
+	enum backlight_control_type backlight_control_type;
 };
 
 /* Return an enumerated dc_link.
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index b0b7102fdbc75..3401f4c9fb10e 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -923,6 +923,12 @@ struct display_endpoint_id {
 	enum display_endpoint_type ep_type;
 };
 
+enum backlight_control_type {
+	BACKLIGHT_CONTROL_PWM = 0,
+	BACKLIGHT_CONTROL_VESA_AUX = 1,
+	BACKLIGHT_CONTROL_AMD_AUX = 2,
+};
+
 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
 struct otg_phy_mux {
 	uint8_t phy_output_num;