[PATCH v5 3/9] drm/hisilicon/hibmc: Add support for frame buffer
Daniel Vetter
daniel at ffwll.ch
Tue Oct 25 22:56:48 PDT 2016
On Wed, Oct 26, 2016 at 10:37:00AM +0800, Rongrong Zou wrote:
> Add support for fbdev and kms fb management.
>
> Signed-off-by: Rongrong Zou <zourongrong at gmail.com>
Small drive-by comment below.
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> index db8d80e..d41138a 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
> @@ -20,9 +20,23 @@
> #define HIBMC_DRM_DRV_H
>
> #include <drm/drmP.h>
> +#include <drm/drm_fb_helper.h>
> #include <drm/ttm/ttm_bo_driver.h>
> #include <drm/drm_gem.h>
>
> +struct hibmc_framebuffer {
> + struct drm_framebuffer fb;
> + struct drm_gem_object *obj;
> + bool is_fbdev_fb;
> +};
> +
> +struct hibmc_fbdev {
> + struct drm_fb_helper helper;
> + struct hibmc_framebuffer fb;
I wouldn't embed the single framebuffer here, but instead have a pointer
and just refcount it. This here is a pattern that predates framebuffer
refcounting, and it leads to plenty of surprises.
Maybe we should update the documentation of
drm_framebuffer_unregister_private() to mention that it is deprecated? The
overview doc in drm_framebuffer.c already explains that, but I guess
that's not obvious enough.
Can you pls do that patch? And pls make sure it all looks pretty when
building the docs with
$ make htmldocs
Thanks, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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