xref: /linux/drivers/gpu/drm/exynos/exynos_drm_fb.h (revision 4413e16d9d21673bb5048a2e542f1aaa00015c2e)
1 /*
2  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
3  * Authors:
4  *	Inki Dae <inki.dae@samsung.com>
5  *	Joonyoung Shim <jy0922.shim@samsung.com>
6  *	Seung-Woo Kim <sw0312.kim@samsung.com>
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the "Software"),
10  * to deal in the Software without restriction, including without limitation
11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12  * and/or sell copies of the Software, and to permit persons to whom the
13  * Software is furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice (including the next
16  * paragraph) shall be included in all copies or substantial portions of the
17  * Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25  * OTHER DEALINGS IN THE SOFTWARE.
26  */
27 
28 #ifndef _EXYNOS_DRM_FB_H_
29 #define _EXYNOS_DRM_FB_H
30 
31 static inline int exynos_drm_format_num_buffers(uint32_t format)
32 {
33 	switch (format) {
34 	case DRM_FORMAT_NV12:
35 	case DRM_FORMAT_NV12MT:
36 		return 2;
37 	case DRM_FORMAT_YUV420:
38 		return 3;
39 	default:
40 		return 1;
41 	}
42 }
43 
44 struct drm_framebuffer *
45 exynos_drm_framebuffer_init(struct drm_device *dev,
46 			    struct drm_mode_fb_cmd2 *mode_cmd,
47 			    struct drm_gem_object *obj);
48 
49 /* get memory information of a drm framebuffer */
50 struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
51 						 int index);
52 
53 void exynos_drm_mode_config_init(struct drm_device *dev);
54 
55 #endif
56