UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/exynos: support gem_prime_mmap 

This allows exported dma-bufs to be mapped using gem_prime_mmap.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2016-04-22 16:30:47 +09:00 committed by Inki Dae
parent fa9971d62a
commit 5a0202f758
3 changed files with 35 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/exynos/exynos_drm_drv.c
View File

@ -431,6 +431,7 @@ static struct drm_driver exynos_drm_driver = {
.gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
.gem_prime_vmap = exynos_drm_gem_prime_vmap,
.gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
.gem_prime_mmap = exynos_drm_gem_prime_mmap,
.ioctls = exynos_ioctls,
.num_ioctls = ARRAY_SIZE(exynos_ioctls),
.fops = &exynos_drm_driver_fops,

45
drivers/gpu/drm/exynos/exynos_drm_gem.c
View File

@ -503,22 +503,12 @@ out:
}
}
int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
struct vm_area_struct *vma)
{
struct exynos_drm_gem *exynos_gem;
struct drm_gem_object *obj;
struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
int ret;
/* set vm_area_struct. */
ret = drm_gem_mmap(filp, vma);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
}
obj = vma->vm_private_data;
exynos_gem = to_exynos_gem(obj);
DRM_DEBUG_KMS("flags = 0x%x\n", exynos_gem->flags);
/* non-cachable as default. */
@ -543,6 +533,23 @@ err_close_vm:
return ret;
}
int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct drm_gem_object *obj;
int ret;
/* set vm_area_struct. */
ret = drm_gem_mmap(filp, vma);
if (ret < 0) {
DRM_ERROR("failed to mmap.\n");
return ret;
}
obj = vma->vm_private_data;
return exynos_drm_gem_mmap_obj(obj, vma);
}
/* low-level interface prime helpers */
struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
{
@ -617,3 +624,15 @@ void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{
/* Nothing to do */
}
int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma)
{
int ret;
ret = drm_gem_mmap_obj(obj, obj->size, vma);
if (ret < 0)
return ret;
return exynos_drm_gem_mmap_obj(obj, vma);
}

2
drivers/gpu/drm/exynos/exynos_drm_gem.h
View File

@ -139,5 +139,7 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
struct sg_table *sgt);
void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj);
void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
#endif