1 /*
2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3  * Author:Mark Yao <mark.yao@rock-chips.com>
4  *
5  * based on exynos_drm_drv.h
6  *
7  * This software is licensed under the terms of the GNU General Public
8  * License version 2, as published by the Free Software Foundation, and
9  * may be copied, distributed, and modified under those terms.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  */
16 
17 #ifndef _ROCKCHIP_DRM_DRV_H
18 #define _ROCKCHIP_DRM_DRV_H
19 
20 #include <drm/drm_fb_helper.h>
21 #include <drm/drm_atomic_helper.h>
22 #include <drm/drm_gem.h>
23 
24 #include <linux/module.h>
25 #include <linux/component.h>
26 
27 #define ROCKCHIP_MAX_FB_BUFFER	3
28 #define ROCKCHIP_MAX_CONNECTOR	2
29 #define ROCKCHIP_MAX_CRTC	2
30 
31 struct drm_device;
32 struct drm_connector;
33 
34 /*
35  * Rockchip drm private crtc funcs.
36  * @enable_vblank: enable crtc vblank irq.
37  * @disable_vblank: disable crtc vblank irq.
38  */
39 struct rockchip_crtc_funcs {
40 	int (*enable_vblank)(struct drm_crtc *crtc);
41 	void (*disable_vblank)(struct drm_crtc *crtc);
42 	void (*wait_for_update)(struct drm_crtc *crtc);
43 };
44 
45 struct rockchip_atomic_commit {
46 	struct work_struct	work;
47 	struct drm_atomic_state *state;
48 	struct drm_device *dev;
49 	struct mutex lock;
50 };
51 
52 /*
53  * Rockchip drm private structure.
54  *
55  * @crtc: array of enabled CRTCs, used to map from "pipe" to drm_crtc.
56  * @num_pipe: number of pipes for this device.
57  */
58 struct rockchip_drm_private {
59 	struct drm_fb_helper fbdev_helper;
60 	struct drm_gem_object *fbdev_bo;
61 	const struct rockchip_crtc_funcs *crtc_funcs[ROCKCHIP_MAX_CRTC];
62 
63 	struct rockchip_atomic_commit commit;
64 };
65 
66 void rockchip_drm_atomic_work(struct work_struct *work);
67 int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
68 				 const struct rockchip_crtc_funcs *crtc_funcs);
69 void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc);
70 int rockchip_drm_encoder_get_mux_id(struct device_node *node,
71 				    struct drm_encoder *encoder);
72 int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc, int connector_type,
73 				  int out_mode);
74 int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
75 				   struct device *dev);
76 void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
77 				    struct device *dev);
78 #endif /* _ROCKCHIP_DRM_DRV_H_ */
79