drm/amdgpu/display: make backlight setting failure messages debug

Avoid spamming the log.  The backlight controller on DCN chips
gets powered down when the display is off, so if you attempt to
set the backlight level when the display is off, you'll get this
message.  This isn't a problem as we cache the requested backlight
level if it's adjusted when the display is off and set it again
during modeset.

Reviewed-by: Nicholas Kazlauskas <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
Cc: [email protected]

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e0c727c27a88b3a4afb6ae501601baaf87ee7f15..f303e8dbdb5fadd52cffe4b3a7f2c703f0ab67a4 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3506,7 +3506,7 @@ static int amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm,
                        rc = dc_link_set_backlight_level_nits(link[i], true, brightness[i],
                                AUX_BL_DEFAULT_TRANSITION_TIME_MS);
                        if (!rc) {
-                               DRM_ERROR("DM: Failed to update backlight via AUX on eDP[%d]\n", i);
+                               DRM_DEBUG("DM: Failed to update backlight via AUX on eDP[%d]\n", i);
                                break;
                        }
                }
@@ -3514,7 +3514,7 @@ static int amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm,
                for (i = 0; i < dm->num_of_edps; i++) {
                        rc = dc_link_set_backlight_level(dm->backlight_link[i], brightness[i], 0);
                        if (!rc) {
-                               DRM_ERROR("DM: Failed to update backlight on eDP[%d]\n", i);
+                               DRM_DEBUG("DM: Failed to update backlight on eDP[%d]\n", i);
                                break;
                        }
                }