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 <linux/gpio/consumer.h>
18 #include <linux/i2c-algo-bit.h>
19 #include <linux/i2c.h>
20 
21 #include <drm/drm_edid.h>
22 #include <drm/drm_fb_helper.h>
23 #include <drm/drm_framebuffer.h>
24 
25 struct hibmc_connector {
26 	struct drm_connector base;
27 
28 	struct i2c_adapter adapter;
29 	struct i2c_algo_bit_data bit_data;
30 };
31 
32 struct hibmc_drm_private {
33 	/* hw */
34 	void __iomem   *mmio;
35 	void __iomem   *fb_map;
36 	resource_size_t  fb_base;
37 	resource_size_t  fb_size;
38 
39 	/* drm */
40 	struct drm_device  *dev;
41 	struct drm_plane primary_plane;
42 	struct drm_crtc crtc;
43 	struct drm_encoder encoder;
44 	struct hibmc_connector connector;
45 	bool mode_config_initialized;
46 };
47 
48 static inline struct hibmc_connector *to_hibmc_connector(struct drm_connector *connector)
49 {
50 	return container_of(connector, struct hibmc_connector, base);
51 }
52 
53 static inline struct hibmc_drm_private *to_hibmc_drm_private(struct drm_device *dev)
54 {
55 	return dev->dev_private;
56 }
57 
58 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
59 			  u32 power_mode);
60 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
61 			    u32 gate);
62 
63 int hibmc_de_init(struct hibmc_drm_private *priv);
64 int hibmc_vdac_init(struct hibmc_drm_private *priv);
65 
66 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
67 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
68 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
69 		      struct drm_mode_create_dumb *args);
70 int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_connector *connector);
71 
72 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
73 
74 #endif
75