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| author |   Alex Deucher <alexander.deucher@amd.com> | 2018-03-08 09:56:01 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-03-14 15:39:51 -0500 |
| commit | b5e3241316973b9f01228d2fa5b8b2bb157d44aa (patch) | |
| tree | d1ee97f9c84e3957ab7bcd50a40aee08e6a0f2aa /drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | |
| parent | drm/radeon: fix prime teardown order (diff) | |
| download | linux-dev-b5e3241316973b9f01228d2fa5b8b2bb157d44aa.tar.xz linux-dev-b5e3241316973b9f01228d2fa5b8b2bb157d44aa.zip | |
drm/amdgpu: save/restore backlight level in legacy dce code
Save/restore the backlight level scratch register in S3/S4 so the
backlight level comes back at the previously requested level.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=199047
Fixes: 4ec6ecf48c64d (drm/amdgpu: drop scratch regs save and restore from S3/S4 handling)
Acked-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c index c008dc030687..012e0a9ae0ff 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c @@ -2819,6 +2819,11 @@ static int dce_v8_0_hw_fini(void *handle) static int dce_v8_0_suspend(void *handle) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + adev->mode_info.bl_level = + amdgpu_atombios_encoder_get_backlight_level_from_reg(adev); + return dce_v8_0_hw_fini(handle); } @@ -2827,6 +2832,9 @@ static int dce_v8_0_resume(void *handle) struct amdgpu_device *adev = (struct amdgpu_device *)handle; int ret; + amdgpu_atombios_encoder_set_backlight_level_to_reg(adev, + adev->mode_info.bl_level); + ret = dce_v8_0_hw_init(handle); /* turn on the BL */ |