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Commit 74b3112e authored by Alex Deucher's avatar Alex Deucher
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drm/amdgpu: Restore LCD backlight level on resume 



Instead of only enabling the backlight (which seems to set it to max
brightness), just re-set the current backlight level, which also takes
care of enabling the backlight if necessary.

Port of radeon commit:
drm/radeon: Restore LCD backlight level on resume (>= R5xx)

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 4281f46e

drivers/gpu/drm/amd/amdgpu/atombios_encoders.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -1279,8 +1279,7 @@ amdgpu_atombios_encoder_setup_dig(struct drm_encoder *encoder, int action) 
			amdgpu_atombios_encoder_setup_dig_encoder(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);

			amdgpu_atombios_encoder_setup_dig_encoder(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);

		}

		}

		if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))

		if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))

			amdgpu_atombios_encoder_setup_dig_transmitter(encoder,

			amdgpu_atombios_encoder_set_backlight_level(amdgpu_encoder, dig->backlight_level);

							       ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);

		if (ext_encoder)

		if (ext_encoder)

			amdgpu_atombios_encoder_setup_external_encoder(encoder, ext_encoder, ATOM_ENABLE);

			amdgpu_atombios_encoder_setup_external_encoder(encoder, ext_encoder, ATOM_ENABLE);

	} else {

	} else {