diff options
| author |   Nicholas Bishop <nicholasbishop@google.com> | 2022-02-11 14:57:39 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2022-02-14 15:01:46 -0500 |
| commit | 364438fd629f7611a84c8e6d7de91659300f1502 (patch) | |
| tree | 40daa7685988bb8ede5df0c1031eaa358406f2ec /drivers/gpu/drm/radeon/atombios_encoders.c | |
| parent | drm/amd/pm: correct the sequence of sending gpu reset msg (diff) | |
| download | linux-dev-364438fd629f7611a84c8e6d7de91659300f1502.tar.xz linux-dev-364438fd629f7611a84c8e6d7de91659300f1502.zip | |
drm/radeon: Fix backlight control on iMac 12,1
The iMac 12,1 does not use the gmux driver for backlight, so the radeon
backlight device is needed to set the brightness.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1838
Signed-off-by: Nicholas Bishop <nicholasbishop@google.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_encoders.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_encoders.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index 0fce73b9a646..70bd84b7ef2b 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -198,7 +198,8 @@ void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder, * so don't register a backlight device */ if ((rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) && - (rdev->pdev->device == 0x6741)) + (rdev->pdev->device == 0x6741) && + !dmi_match(DMI_PRODUCT_NAME, "iMac12,1")) return; if (!radeon_encoder->enc_priv) |