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 struct drm_crtc_state;
25 
26 enum mtk_ddp_comp_type {
27 	MTK_DISP_OVL,
28 	MTK_DISP_RDMA,
29 	MTK_DISP_WDMA,
30 	MTK_DISP_COLOR,
31 	MTK_DISP_AAL,
32 	MTK_DISP_GAMMA,
33 	MTK_DISP_UFOE,
34 	MTK_DSI,
35 	MTK_DPI,
36 	MTK_DISP_PWM,
37 	MTK_DISP_MUTEX,
38 	MTK_DISP_OD,
39 	MTK_DISP_BLS,
40 	MTK_DDP_COMP_TYPE_MAX,
41 };
42 
43 enum mtk_ddp_comp_id {
44 	DDP_COMPONENT_AAL,
45 	DDP_COMPONENT_BLS,
46 	DDP_COMPONENT_COLOR0,
47 	DDP_COMPONENT_COLOR1,
48 	DDP_COMPONENT_DPI0,
49 	DDP_COMPONENT_DSI0,
50 	DDP_COMPONENT_DSI1,
51 	DDP_COMPONENT_GAMMA,
52 	DDP_COMPONENT_OD,
53 	DDP_COMPONENT_OVL0,
54 	DDP_COMPONENT_OVL1,
55 	DDP_COMPONENT_PWM0,
56 	DDP_COMPONENT_PWM1,
57 	DDP_COMPONENT_RDMA0,
58 	DDP_COMPONENT_RDMA1,
59 	DDP_COMPONENT_RDMA2,
60 	DDP_COMPONENT_UFOE,
61 	DDP_COMPONENT_WDMA0,
62 	DDP_COMPONENT_WDMA1,
63 	DDP_COMPONENT_ID_MAX,
64 };
65 
66 struct mtk_ddp_comp;
67 
68 struct mtk_ddp_comp_funcs {
69 	void (*config)(struct mtk_ddp_comp *comp, unsigned int w,
70 		       unsigned int h, unsigned int vrefresh, unsigned int bpc);
71 	void (*start)(struct mtk_ddp_comp *comp);
72 	void (*stop)(struct mtk_ddp_comp *comp);
73 	void (*enable_vblank)(struct mtk_ddp_comp *comp, struct drm_crtc *crtc);
74 	void (*disable_vblank)(struct mtk_ddp_comp *comp);
75 	void (*layer_on)(struct mtk_ddp_comp *comp, unsigned int idx);
76 	void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx);
77 	void (*layer_config)(struct mtk_ddp_comp *comp, unsigned int idx,
78 			     struct mtk_plane_state *state);
79 	void (*gamma_set)(struct mtk_ddp_comp *comp,
80 			  struct drm_crtc_state *state);
81 };
82 
83 struct mtk_ddp_comp {
84 	struct clk *clk;
85 	void __iomem *regs;
86 	int irq;
87 	struct device *larb_dev;
88 	enum mtk_ddp_comp_id id;
89 	const struct mtk_ddp_comp_funcs *funcs;
90 };
91 
92 static inline void mtk_ddp_comp_config(struct mtk_ddp_comp *comp,
93 				       unsigned int w, unsigned int h,
94 				       unsigned int vrefresh, unsigned int bpc)
95 {
96 	if (comp->funcs && comp->funcs->config)
97 		comp->funcs->config(comp, w, h, vrefresh, bpc);
98 }
99 
100 static inline void mtk_ddp_comp_start(struct mtk_ddp_comp *comp)
101 {
102 	if (comp->funcs && comp->funcs->start)
103 		comp->funcs->start(comp);
104 }
105 
106 static inline void mtk_ddp_comp_stop(struct mtk_ddp_comp *comp)
107 {
108 	if (comp->funcs && comp->funcs->stop)
109 		comp->funcs->stop(comp);
110 }
111 
112 static inline void mtk_ddp_comp_enable_vblank(struct mtk_ddp_comp *comp,
113 					      struct drm_crtc *crtc)
114 {
115 	if (comp->funcs && comp->funcs->enable_vblank)
116 		comp->funcs->enable_vblank(comp, crtc);
117 }
118 
119 static inline void mtk_ddp_comp_disable_vblank(struct mtk_ddp_comp *comp)
120 {
121 	if (comp->funcs && comp->funcs->disable_vblank)
122 		comp->funcs->disable_vblank(comp);
123 }
124 
125 static inline void mtk_ddp_comp_layer_on(struct mtk_ddp_comp *comp,
126 					 unsigned int idx)
127 {
128 	if (comp->funcs && comp->funcs->layer_on)
129 		comp->funcs->layer_on(comp, idx);
130 }
131 
132 static inline void mtk_ddp_comp_layer_off(struct mtk_ddp_comp *comp,
133 					  unsigned int idx)
134 {
135 	if (comp->funcs && comp->funcs->layer_off)
136 		comp->funcs->layer_off(comp, idx);
137 }
138 
139 static inline void mtk_ddp_comp_layer_config(struct mtk_ddp_comp *comp,
140 					     unsigned int idx,
141 					     struct mtk_plane_state *state)
142 {
143 	if (comp->funcs && comp->funcs->layer_config)
144 		comp->funcs->layer_config(comp, idx, state);
145 }
146 
147 static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp,
148 				     struct drm_crtc_state *state)
149 {
150 	if (comp->funcs && comp->funcs->gamma_set)
151 		comp->funcs->gamma_set(comp, state);
152 }
153 
154 int mtk_ddp_comp_get_id(struct device_node *node,
155 			enum mtk_ddp_comp_type comp_type);
156 int mtk_ddp_comp_init(struct device *dev, struct device_node *comp_node,
157 		      struct mtk_ddp_comp *comp, enum mtk_ddp_comp_id comp_id,
158 		      const struct mtk_ddp_comp_funcs *funcs);
159 int mtk_ddp_comp_register(struct drm_device *drm, struct mtk_ddp_comp *comp);
160 void mtk_ddp_comp_unregister(struct drm_device *drm, struct mtk_ddp_comp *comp);
161 void mtk_dither_set(struct mtk_ddp_comp *comp, unsigned int bpc,
162 		    unsigned int CFG);
163 
164 #endif /* MTK_DRM_DDP_COMP_H */
165