11 May
2023
11 May
'23
1:31 p.m.
On 11/05/2023 14:26, Thomas Zimmermann wrote:
Hi
Am 10.05.23 um 15:10 schrieb Jocelyn Falempe:
When mgag200 switched from simple KMS to regular atomic helpers, the initialization of the gamma settings was lost. This leads to a black screen, if the bios/uefi doesn't use the same pixel color depth.
v2: rebase on top of drm-misc-fixes, and add Cc stable tag.
Looks good. Please add the patch to drm-misc-fixes.
Applied to drm-misc-fixes
Thanks
--
Jocelyn
>
> Best regards
> Thomas
>
>>
>> Link: https://bugzilla.redhat.com/show_bug.cgi?id=2171155
>> Fixes: 1baf9127c482 ("drm/mgag200: Replace simple-KMS with regular
>> atomic helpers")
>> Cc: stable@vger.kernel.org
>> Tested-by: Phil Oester kernel@linuxace.com
>> Reviewed-by: Thomas Zimmermann tzimmermann@suse.de
>> Signed-off-by: Jocelyn Falempe jfalempe@redhat.com
>> ---
>> drivers/gpu/drm/mgag200/mgag200_mode.c | 5 +++++
>> 1 file changed, 5 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c
>> b/drivers/gpu/drm/mgag200/mgag200_mode.c
>> index 0a5aaf78172a..576c4c838a33 100644
>> --- a/drivers/gpu/drm/mgag200/mgag200_mode.c
>> +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
>> @@ -640,6 +640,11 @@ void mgag200_crtc_helper_atomic_enable(struct
>> drm_crtc *crtc, struct drm_atomic_
>> if (funcs->pixpllc_atomic_update)
>> funcs->pixpllc_atomic_update(crtc, old_state);
>> + if (crtc_state->gamma_lut)
>> + mgag200_crtc_set_gamma(mdev, format,
>> crtc_state->gamma_lut->data);
>> + else
>> + mgag200_crtc_set_gamma_linear(mdev, format);
>> +
>> mgag200_enable_display(mdev);
>> if (funcs->enable_vidrst)
>>
>> base-commit: a26cc2934331b57b5a7164bff344f0a2ec245fc0
>