Hi Sam,
On Sat 04 Jan 20, 20:20, Sam Ravnborg wrote:
> Good looking driver. Well structured in a number of relevant files.
> A few comments in the following.
> Some parts I fail to follow - due to my lack of DRM knowledge.
> So all in all - only trivial comments.
Thanks for the review and the friendly feedback!
> With these fixed you can add:
> Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
I'll take most of your suggestions in for the next version and there's just one
point where I disagree:
> > +struct logicvc_drm {
> > + const struct logicvc_drm_caps *caps;
> > + struct logicvc_drm_config config;
> > + struct drm_device *drm;
> Modern drm drivers are expected to embed drm_device.
> See example in drm_drv.c
Well, I see lots of modern drivers that use drm_dev_alloc, including vc4 that
I took as a reference.
My understanding is that embedding the struct is a recommendation but
drm_dev_alloc is still quite valid and that the choice is left open.
Quoting drm_drv.c:
* It is recommended that drivers embed &struct drm_device into their own device
* structure.
*
* Drivers that do not want to allocate their own device struct
* embedding &struct drm_device can call drm_dev_alloc() instead.
In my case, I like the fact that drm_dev_alloc correctly wraps drm_dev_init
and drmm_add_final_kfree (and I'd rather not add & all around unless I'm
obliged to ;)
Cheers,
Paul
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
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