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Commit ba251bde authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

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



Seems some newer systems require this explicitly.

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent d33ef52d

drivers/gpu/drm/radeon/radeon_encoders.c

+14 −1
Original line number Diff line number Diff line
@@ -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);