[PATCH 3/3] drm/crtc-helper: Add a drm_crtc_helper_atomic_check() helper

[Thomas Zimmermann]

Hi

Am 11.10.22 um 15:26 schrieb Javier Martinez Canillas:
> On 10/11/22 15:21, Thomas Zimmermann wrote:
>> Hi
>>
>> Am 10.10.22 um 19:02 schrieb Javier Martinez Canillas:
>>> Provides a default CRTC state check handler for CRTCs that only have one
>>> primary plane attached.
>>>
>>> There are some drivers that duplicate this logic in their helpers, such as
>>> simpledrm and ssd130x. Factor out this common code into a CRTC helper and
>>> make drivers use it.
>>>
>>> Signed-off-by: Javier Martinez Canillas <javierm at redhat.com>
>>
>> Reviewed-by: Thomas Zimmermann <tzimmermann at suse.de>
>>
>> There really isn't much here for now. I suspect that there are more
>> drivers that could use this helper. If you merge this before ofdrm, I'll
>> rebase ofdrm on top.
>>
> 
> Sure. I probably won't post a v2 until tomorrow and I believe ofdrm is
> ready to be merged, so I'll just rebase this series on top of that once
> just push it.

I just realized that this function in ofdrm has additional code for 
color management. There won't be anything to convert.

Best regards
Thomas

> 
>> Please also see my comment below.
>>
>>
> 
> [...]
> 
>>> +/**
>>> + * drm_crtc_helper_atomic_check() - Helper to check CRTC atomic-state
>>> + * @crtc: CRTC to check
>>> + * @state: atomic state object
>>> + *
>>> + * Provides a default CRTC-state check handler for CRTCs that only have
>>> + * one primary plane attached to it.
>>> + *
>>> + * This is often the case for the CRTC of simple framebuffers.
>>
>> I'd add a reference to drm_plane_helper_atomic_check() to this
>> paragraph. Like
>>
>>     See drm_plane_helper_atomic_check() for the respective plane helpers.
>>
>> And also reference back from the plane-check helper to the CRTC-check
>> helper.
>>
> 
> Good idea, I'll do that. Thanks for your review.
>   
>> Best regards
>> Thomas
>>
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
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