1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* Hisilicon Hibmc SoC drm driver
3  *
4  * Based on the bochs drm driver.
5  *
6  * Copyright (c) 2016 Huawei Limited.
7  *
8  * Author:
9  *	Rongrong Zou <zourongrong@huawei.com>
10  *	Rongrong Zou <zourongrong@gmail.com>
11  *	Jianhua Li <lijianhua@huawei.com>
12  */
13 
14 #ifndef HIBMC_DRM_DRV_H
15 #define HIBMC_DRM_DRV_H
16 
17 #include <drm/drm_fb_helper.h>
18 #include <drm/drm_framebuffer.h>
19 
20 struct drm_device;
21 struct drm_gem_object;
22 
23 struct hibmc_framebuffer {
24 	struct drm_framebuffer fb;
25 	struct drm_gem_object *obj;
26 };
27 
28 struct hibmc_fbdev {
29 	struct drm_fb_helper helper; /* must be first */
30 	struct hibmc_framebuffer *fb;
31 	int size;
32 };
33 
34 struct hibmc_drm_private {
35 	/* hw */
36 	void __iomem   *mmio;
37 	void __iomem   *fb_map;
38 	unsigned long  fb_base;
39 	unsigned long  fb_size;
40 	bool msi_enabled;
41 
42 	/* drm */
43 	struct drm_device  *dev;
44 	bool mode_config_initialized;
45 
46 	/* fbdev */
47 	struct hibmc_fbdev *fbdev;
48 };
49 
50 #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
51 
52 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
53 			  unsigned int power_mode);
54 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
55 			    unsigned int gate);
56 
57 int hibmc_de_init(struct hibmc_drm_private *priv);
58 int hibmc_vdac_init(struct hibmc_drm_private *priv);
59 int hibmc_fbdev_init(struct hibmc_drm_private *priv);
60 void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
61 
62 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
63 		     struct drm_gem_object **obj);
64 struct hibmc_framebuffer *
65 hibmc_framebuffer_init(struct drm_device *dev,
66 		       const struct drm_mode_fb_cmd2 *mode_cmd,
67 		       struct drm_gem_object *obj);
68 
69 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
70 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
71 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
72 		      struct drm_mode_create_dumb *args);
73 
74 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
75 
76 #endif
77