drm/amdgpu: support backlight control for UNIPHY3

Same interface as other UNIPHY blocks

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
index 48b6bd671cda..c32eca26155c 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
@@ -98,6 +98,7 @@ amdgpu_atombios_encoder_set_backlight_level(struct amdgpu_encoder *amdgpu_encode
                 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
                 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
                 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
+                case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
                         if (dig->backlight_level == 0)
                                 amdgpu_atombios_encoder_setup_dig_transmitter(encoder,
                                                                        ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0);