1 /*
2  * Copyright (c) 2015 MediaTek Inc.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  * GNU General Public License for more details.
12  */
13 
14 #ifndef MTK_DRM_DDP_COMP_H
15 #define MTK_DRM_DDP_COMP_H
16 
17 #include <linux/io.h>
18 
19 struct device;
20 struct device_node;
21 struct drm_crtc;
22 struct drm_device;
23 struct mtk_plane_state;
24 
25 enum mtk_ddp_comp_type {
26 	MTK_DISP_OVL,
27 	MTK_DISP_RDMA,
28 	MTK_DISP_WDMA,
29 	MTK_DISP_COLOR,
30 	MTK_DISP_AAL,
31 	MTK_DISP_GAMMA,
32 	MTK_DISP_UFOE,
33 	MTK_DSI,
34 	MTK_DPI,
35 	MTK_DISP_PWM,
36 	MTK_DISP_MUTEX,
37 	MTK_DISP_OD,
38 	MTK_DDP_COMP_TYPE_MAX,
39 };
40 
41 enum mtk_ddp_comp_id {
42 	DDP_COMPONENT_AAL,
43 	DDP_COMPONENT_COLOR0,
44 	DDP_COMPONENT_COLOR1,
45 	DDP_COMPONENT_DPI0,
46 	DDP_COMPONENT_DSI0,
47 	DDP_COMPONENT_DSI1,
48 	DDP_COMPONENT_GAMMA,
49 	DDP_COMPONENT_OD,
50 	DDP_COMPONENT_OVL0,
51 	DDP_COMPONENT_OVL1,
52 	DDP_COMPONENT_PWM0,
53 	DDP_COMPONENT_PWM1,
54 	DDP_COMPONENT_RDMA0,
55 	DDP_COMPONENT_RDMA1,
56 	DDP_COMPONENT_RDMA2,
57 	DDP_COMPONENT_UFOE,
58 	DDP_COMPONENT_WDMA0,
59 	DDP_COMPONENT_WDMA1,
60 	DDP_COMPONENT_ID_MAX,
61 };
62 
63 struct mtk_ddp_comp;
64 
65 struct mtk_ddp_comp_funcs {
66 	void (*config)(struct mtk_ddp_comp *comp, unsigned int w,
67 		       unsigned int h, unsigned int vrefresh);
68 	void (*start)(struct mtk_ddp_comp *comp);
69 	void (*stop)(struct mtk_ddp_comp *comp);
70 	void (*enable_vblank)(struct mtk_ddp_comp *comp, struct drm_crtc *crtc);
71 	void (*disable_vblank)(struct mtk_ddp_comp *comp);
72 	void (*layer_on)(struct mtk_ddp_comp *comp, unsigned int idx);
73 	void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx);
74 	void (*layer_config)(struct mtk_ddp_comp *comp, unsigned int idx,
75 			     struct mtk_plane_state *state);
76 };
77 
78 struct mtk_ddp_comp {
79 	struct clk *clk;
80 	void __iomem *regs;
81 	int irq;
82 	struct device *larb_dev;
83 	enum mtk_ddp_comp_id id;
84 	const struct mtk_ddp_comp_funcs *funcs;
85 };
86 
87 static inline void mtk_ddp_comp_config(struct mtk_ddp_comp *comp,
88 				       unsigned int w, unsigned int h,
89 				       unsigned int vrefresh)
90 {
91 	if (comp->funcs && comp->funcs->config)
92 		comp->funcs->config(comp, w, h, vrefresh);
93 }
94 
95 static inline void mtk_ddp_comp_start(struct mtk_ddp_comp *comp)
96 {
97 	if (comp->funcs && comp->funcs->start)
98 		comp->funcs->start(comp);
99 }
100 
101 static inline void mtk_ddp_comp_stop(struct mtk_ddp_comp *comp)
102 {
103 	if (comp->funcs && comp->funcs->stop)
104 		comp->funcs->stop(comp);
105 }
106 
107 static inline void mtk_ddp_comp_enable_vblank(struct mtk_ddp_comp *comp,
108 					      struct drm_crtc *crtc)
109 {
110 	if (comp->funcs && comp->funcs->enable_vblank)
111 		comp->funcs->enable_vblank(comp, crtc);
112 }
113 
114 static inline void mtk_ddp_comp_disable_vblank(struct mtk_ddp_comp *comp)
115 {
116 	if (comp->funcs && comp->funcs->disable_vblank)
117 		comp->funcs->disable_vblank(comp);
118 }
119 
120 static inline void mtk_ddp_comp_layer_on(struct mtk_ddp_comp *comp,
121 					 unsigned int idx)
122 {
123 	if (comp->funcs && comp->funcs->layer_on)
124 		comp->funcs->layer_on(comp, idx);
125 }
126 
127 static inline void mtk_ddp_comp_layer_off(struct mtk_ddp_comp *comp,
128 					  unsigned int idx)
129 {
130 	if (comp->funcs && comp->funcs->layer_off)
131 		comp->funcs->layer_off(comp, idx);
132 }
133 
134 static inline void mtk_ddp_comp_layer_config(struct mtk_ddp_comp *comp,
135 					     unsigned int idx,
136 					     struct mtk_plane_state *state)
137 {
138 	if (comp->funcs && comp->funcs->layer_config)
139 		comp->funcs->layer_config(comp, idx, state);
140 }
141 
142 int mtk_ddp_comp_get_id(struct device_node *node,
143 			enum mtk_ddp_comp_type comp_type);
144 int mtk_ddp_comp_init(struct device *dev, struct device_node *comp_node,
145 		      struct mtk_ddp_comp *comp, enum mtk_ddp_comp_id comp_id,
146 		      const struct mtk_ddp_comp_funcs *funcs);
147 int mtk_ddp_comp_register(struct drm_device *drm, struct mtk_ddp_comp *comp);
148 void mtk_ddp_comp_unregister(struct drm_device *drm, struct mtk_ddp_comp *comp);
149 
150 #endif /* MTK_DRM_DDP_COMP_H */
151