Re: [PATCH v2 16/23] drm/rcar-du: Use GEM CMA object functions

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Thomas,

Thank you for the patch.

On Wed, Jun 03, 2020 at 10:31:25AM +0200, Thomas Zimmermann wrote:
> The rcar-du driver uses the default implementation for CMA functions; except
> for the .dumb_create callback. The DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE()
> macro now sets these defaults and .dumb_create in struct drm_driver.
> 
> By using DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE() the driver now
> sets .gem_create_object to drm_cma_gem_create_object_default_funcs(),
> which sets CMA GEM object functions. GEM object functions implement the
> rsp operations where possible. Corresponding interfaces in struct drm_driver
> are cleared. Prime import now uses drm_gem_cma_prime_import_sg_table_vmap(),
> which maps the imported buffer upon import. Mmap operations are performed
> by drm_gem_prime_mmap(), which goes through GEM file operations. These
> changes have been part of the aspeed driver for some time.

How is the aspeed driver related to this patch ?

> 
> v2:
> 	* update for DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE

As explained in the review of v1, this combines multiple changes in a
single patch. Some of those changes are not straightforward to review.
It would be easier if they were split in separate patches.

> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Tested-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> Acked-by: Emil Velikov <emil.velikov@collabora.com>
> ---
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index 3e67cf70f0402..f53b0ec710850 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -476,16 +476,7 @@ DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
>  
>  static struct drm_driver rcar_du_driver = {
>  	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
> -	.gem_free_object_unlocked = drm_gem_cma_free_object,
> -	.gem_vm_ops		= &drm_gem_cma_vm_ops,
> -	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
> -	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
> -	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
> -	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
> -	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
> -	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
> -	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
> -	.dumb_create		= rcar_du_dumb_create,
> +	DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(rcar_du_dumb_create),
>  	.fops			= &rcar_du_fops,
>  	.name			= "rcar-du",
>  	.desc			= "Renesas R-Car Display Unit",

-- 
Regards,

Laurent Pinchart
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