From: Alex Deucher <alexdeucher@gmail.com>
Date: Tue, 16 Nov 2010 17:09:39 +0000 (-0500)
Subject: drm/radeon/kms: turn the backlight off explicitly for dpms
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ba251bde9ab8bdce8fbd3f60dbb71b36cc4c9adf;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

drm/radeon/kms: turn the backlight off explicitly for dpms

Seems some newer systems require this explicitly.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index f678257c42e..d55cb58283a 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -1086,6 +1086,8 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
 				if (ASIC_IS_DCE4(rdev))
 					atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON);
 			}
+			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
+				atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
 			break;
 		case DRM_MODE_DPMS_STANDBY:
 		case DRM_MODE_DPMS_SUSPEND:
@@ -1095,20 +1097,31 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
 				if (ASIC_IS_DCE4(rdev))
 					atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF);
 			}
+			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
+				atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0);
 			break;
 		}
 	} else {
 		switch (mode) {
 		case DRM_MODE_DPMS_ON:
 			args.ucAction = ATOM_ENABLE;
+			atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+				args.ucAction = ATOM_LCD_BLON;
+				atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+			}
 			break;
 		case DRM_MODE_DPMS_STANDBY:
 		case DRM_MODE_DPMS_SUSPEND:
 		case DRM_MODE_DPMS_OFF:
 			args.ucAction = ATOM_DISABLE;
+			atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+				args.ucAction = ATOM_LCD_BLOFF;
+				atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+			}
 			break;
 		}
-		atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 	}
 	radeon_atombios_encoder_dpms_scratch_regs(encoder, (mode == DRM_MODE_DPMS_ON) ? true : false);