[PATCH v2 23/25] drm/mediatek: add vmap support for mediatek drm

[CK Hu]

Hi, Yongqiang:

On Wed, 2019-03-27 at 14:19 +0800, yongqiang.niu at mediatek.com wrote:
> From: Yongqiang Niu <yongqiang.niu at mediatek.com>
> 
> This patch add add vmap support for mediatek drm

I think the upstreamed patch 'drm/mediatek: Implement gem prime
vmap/vunmap function' [1] has the same function of this patch. You could
cherry-pick that patch to your local and need not to upstream this
patch.

[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/mediatek?h=v5.1-rc5&id=3df64d7b0a4f70f1797f23cfd4cca5c4d48131fe

Regards,
CK

> 
> Signed-off-by: Yongqiang Niu <yongqiang.niu at mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
>  drivers/gpu/drm/mediatek/mtk_drm_gem.c | 7 +++++++
>  drivers/gpu/drm/mediatek/mtk_drm_gem.h | 1 +
>  3 files changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 84c6626..942789d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -370,6 +370,7 @@ static void mtk_drm_kms_deinit(struct drm_device *drm)
>  	.gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
>  	.gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
>  	.gem_prime_mmap = mtk_drm_gem_mmap_buf,
> +	.gem_prime_vmap = mtk_drm_gem_vmap_buf,
>  	.fops = &mtk_drm_fops,
>  
>  	.name = DRIVER_NAME,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> index 259b7b0..c230237 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
> @@ -165,6 +165,13 @@ int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, struct vm_area_struct *vma)
>  	return mtk_drm_gem_object_mmap(obj, vma);
>  }
>  
> +void *mtk_drm_gem_vmap_buf(struct drm_gem_object *obj)
> +{
> +	struct mtk_drm_gem_obj *mtk_gem = to_mtk_gem_obj(obj);
> +
> +	return mtk_gem->cookie;
> +}
> +
>  int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
>  {
>  	struct drm_gem_object *obj;
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.h b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> index 534639b..3c48af9 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
> @@ -49,6 +49,7 @@ int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
>  int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
>  int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj,
>  			 struct vm_area_struct *vma);
> +void *mtk_drm_gem_vmap_buf(struct drm_gem_object *obj);
>  struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj);
>  struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev,
>  			struct dma_buf_attachment *attach, struct sg_table *sg);