1 /* Hisilicon Hibmc SoC drm driver
2  *
3  * Based on the bochs drm driver.
4  *
5  * Copyright (c) 2016 Huawei Limited.
6  *
7  * Author:
8  *	Rongrong Zou <zourongrong@huawei.com>
9  *	Rongrong Zou <zourongrong@gmail.com>
10  *	Jianhua Li <lijianhua@huawei.com>
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License as published by
14  * the Free Software Foundation; either version 2 of the License, or
15  * (at your option) any later version.
16  *
17  */
18 
19 #ifndef HIBMC_DRM_DRV_H
20 #define HIBMC_DRM_DRV_H
21 
22 #include <drm/drmP.h>
23 #include <drm/drm_atomic.h>
24 #include <drm/drm_fb_helper.h>
25 #include <drm/drm_gem.h>
26 #include <drm/drm_gem_vram_helper.h>
27 #include <drm/drm_vram_mm_helper.h>
28 
29 struct hibmc_framebuffer {
30 	struct drm_framebuffer fb;
31 	struct drm_gem_object *obj;
32 };
33 
34 struct hibmc_fbdev {
35 	struct drm_fb_helper helper; /* must be first */
36 	struct hibmc_framebuffer *fb;
37 	int size;
38 };
39 
40 struct hibmc_drm_private {
41 	/* hw */
42 	void __iomem   *mmio;
43 	void __iomem   *fb_map;
44 	unsigned long  fb_base;
45 	unsigned long  fb_size;
46 	bool msi_enabled;
47 
48 	/* drm */
49 	struct drm_device  *dev;
50 	bool mode_config_initialized;
51 
52 	/* fbdev */
53 	struct hibmc_fbdev *fbdev;
54 };
55 
56 #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
57 
58 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
59 			  unsigned int power_mode);
60 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
61 			    unsigned int gate);
62 
63 int hibmc_de_init(struct hibmc_drm_private *priv);
64 int hibmc_vdac_init(struct hibmc_drm_private *priv);
65 int hibmc_fbdev_init(struct hibmc_drm_private *priv);
66 void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
67 
68 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
69 		     struct drm_gem_object **obj);
70 struct hibmc_framebuffer *
71 hibmc_framebuffer_init(struct drm_device *dev,
72 		       const struct drm_mode_fb_cmd2 *mode_cmd,
73 		       struct drm_gem_object *obj);
74 
75 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
76 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
77 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
78 		      struct drm_mode_create_dumb *args);
79 
80 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
81 
82 #endif
83