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/drmP.h>
18 #include <drm/drm_atomic.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_gem.h>
21 #include <drm/drm_gem_vram_helper.h>
22 #include <drm/drm_vram_mm_helper.h>
23 
24 struct hibmc_framebuffer {
25 	struct drm_framebuffer fb;
26 	struct drm_gem_object *obj;
27 };
28 
29 struct hibmc_fbdev {
30 	struct drm_fb_helper helper; /* must be first */
31 	struct hibmc_framebuffer *fb;
32 	int size;
33 };
34 
35 struct hibmc_drm_private {
36 	/* hw */
37 	void __iomem   *mmio;
38 	void __iomem   *fb_map;
39 	unsigned long  fb_base;
40 	unsigned long  fb_size;
41 	bool msi_enabled;
42 
43 	/* drm */
44 	struct drm_device  *dev;
45 	bool mode_config_initialized;
46 
47 	/* fbdev */
48 	struct hibmc_fbdev *fbdev;
49 };
50 
51 #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
52 
53 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
54 			  unsigned int power_mode);
55 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
56 			    unsigned int gate);
57 
58 int hibmc_de_init(struct hibmc_drm_private *priv);
59 int hibmc_vdac_init(struct hibmc_drm_private *priv);
60 int hibmc_fbdev_init(struct hibmc_drm_private *priv);
61 void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
62 
63 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
64 		     struct drm_gem_object **obj);
65 struct hibmc_framebuffer *
66 hibmc_framebuffer_init(struct drm_device *dev,
67 		       const struct drm_mode_fb_cmd2 *mode_cmd,
68 		       struct drm_gem_object *obj);
69 
70 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
71 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
72 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
73 		      struct drm_mode_create_dumb *args);
74 
75 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
76 
77 #endif
78