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 5ae521d1b74be6a0f3b818e9f4087a6342620fb3..bf69cd50712e34b882421b51de039b2622e87e8c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -250,6 +250,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, static void handle_hpd_irq_helper(struct amdgpu_dm_connector *aconnector); static void handle_hpd_rx_irq(void *param); +static void amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm, + int bl_idx, + u32 user_brightness); + static bool is_timing_unchanged_for_freesync(struct drm_crtc_state *old_crtc_state, struct drm_crtc_state *new_crtc_state); @@ -3432,6 +3436,12 @@ static int dm_resume(struct amdgpu_ip_block *ip_block) mutex_unlock(&dm->dc_lock); + /* set the backlight after a reset */ + for (i = 0; i < dm->num_of_edps; i++) { + if (dm->backlight_dev[i]) + amdgpu_dm_backlight_set_level(dm, i, dm->brightness[i]); + } + return 0; }