Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 40cd7e0c authored by Inki Dae's avatar Inki Dae
Browse files

drm/exynos: added a feature to get gem buffer information. 



this patch adds a feature to get a gem buffer information and user application
can get the gem buffer information simply in runtime through gem handle.

Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent b2df26c1

drivers/gpu/drm/exynos/exynos_drm_drv.c

+2 −0
Original line number Diff line number Diff line
@@ -211,6 +211,8 @@ static struct drm_ioctl_desc exynos_ioctls[] = { 
			DRM_AUTH),

	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,

			exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),

	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,

			exynos_drm_gem_get_ioctl, DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,

			DRM_UNLOCKED | DRM_AUTH),

	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,

drivers/gpu/drm/exynos/exynos_drm_gem.c

+26 −0
Original line number Diff line number Diff line
@@ -604,6 +604,32 @@ int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, 
	return 0;

}



int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,

				      struct drm_file *file_priv)

{	struct exynos_drm_gem_obj *exynos_gem_obj;

	struct drm_exynos_gem_info *args = data;

	struct drm_gem_object *obj;



	mutex_lock(&dev->struct_mutex);



	obj = drm_gem_object_lookup(dev, file_priv, args->handle);

	if (!obj) {

		DRM_ERROR("failed to lookup gem object.\n");

		mutex_unlock(&dev->struct_mutex);

		return -EINVAL;

	}



	exynos_gem_obj = to_exynos_gem_obj(obj);



	args->flags = exynos_gem_obj->flags;

	args->size = exynos_gem_obj->size;



	drm_gem_object_unreference(obj);

	mutex_unlock(&dev->struct_mutex);



	return 0;

}



int exynos_drm_gem_init_object(struct drm_gem_object *obj)

{

	DRM_DEBUG_KMS("%s\n", __FILE__);

drivers/gpu/drm/exynos/exynos_drm_gem.h

+4 −0
Original line number Diff line number Diff line
@@ -127,6 +127,10 @@ int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, 
int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data,

			      struct drm_file *file_priv);



/* get buffer information to memory region allocated by gem. */

int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,

				      struct drm_file *file_priv);



/* initialize gem object. */

int exynos_drm_gem_init_object(struct drm_gem_object *obj);

include/drm/exynos_drm.h

+19 −0
Original line number Diff line number Diff line
@@ -74,6 +74,21 @@ struct drm_exynos_gem_mmap { 
	uint64_t mapped;

};



/**

 * A structure to gem information.

 *

 * @handle: a handle to gem object created.

 * @flags: flag value including memory type and cache attribute and

 *	this value would be set by driver.

 * @size: size to memory region allocated by gem and this size would

 *	be set by driver.

 */

struct drm_exynos_gem_info {

	unsigned int handle;

	unsigned int flags;

	uint64_t size;

};



/**

 * A structure for user connection request of virtual display.

 *
@@ -113,6 +128,7 @@ enum e_drm_exynos_gem_mem_type { 
#define DRM_EXYNOS_GEM_MAP_OFFSET	0x01

#define DRM_EXYNOS_GEM_MMAP		0x02

/* Reserved 0x03 ~ 0x05 for exynos specific gem ioctl */

#define DRM_EXYNOS_GEM_GET		0x04

#define DRM_EXYNOS_PLANE_SET_ZPOS	0x06

#define DRM_EXYNOS_VIDI_CONNECTION	0x07
@@ -125,6 +141,9 @@ enum e_drm_exynos_gem_mem_type { 
#define DRM_IOCTL_EXYNOS_GEM_MMAP	DRM_IOWR(DRM_COMMAND_BASE + \

		DRM_EXYNOS_GEM_MMAP, struct drm_exynos_gem_mmap)



#define DRM_IOCTL_EXYNOS_GEM_GET	DRM_IOWR(DRM_COMMAND_BASE + \

		DRM_EXYNOS_GEM_GET,	struct drm_exynos_gem_info)



#define DRM_IOCTL_EXYNOS_PLANE_SET_ZPOS	DRM_IOWR(DRM_COMMAND_BASE + \

		DRM_EXYNOS_PLANE_SET_ZPOS, struct drm_exynos_plane_set_zpos)