Release 4.11 drivers/gpu/drm/mediatek/mtk_drm_gem.h

/*
 * Copyright (c) 2015 MediaTek Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _MTK_DRM_GEM_H_

#define _MTK_DRM_GEM_H_

#include <drm/drm_gem.h>

/*
 * mtk drm buffer structure.
 *
 * @base: a gem object.
 *      - a new handle to this gem object would be created
 *      by drm_gem_handle_create().
 * @cookie: the return value of dma_alloc_attrs(), keep it for dma_free_attrs()
 * @kvaddr: kernel virtual address of gem buffer.
 * @dma_addr: dma address of gem buffer.
 * @dma_attrs: dma attributes of gem buffer.
 *
 * P.S. this object would be transferred to user as kms_bo.handle so
 *      user can access the buffer through kms_bo.handle.
 */

struct mtk_drm_gem_obj {
	
struct drm_gem_object	base;
	
void			*cookie;
	
void			*kvaddr;
	
dma_addr_t		dma_addr;
	
unsigned long		dma_attrs;
	
struct sg_table		*sg;
};


#define to_mtk_gem_obj(x)	container_of(x, struct mtk_drm_gem_obj, base)

void mtk_drm_gem_free_object(struct drm_gem_object *gem);
struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev, size_t size,
					   bool alloc_kmap);
int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
			    struct drm_mode_create_dumb *args);
int mtk_drm_gem_dumb_map_offset(struct drm_file *file_priv,
				struct drm_device *dev, uint32_t handle,
				uint64_t *offset);
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);
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);

#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
CK Hu
173
98.86%
1
50.00%
Krzysztof Kozlowski
2
1.14%
1
50.00%
Total
175
100.00%
2
100.00%
Directory: drivers/gpu/drm/mediatek

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.