1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * camss.h
4  *
5  * Qualcomm MSM Camera Subsystem - Core
6  *
7  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
8  * Copyright (C) 2015-2018 Linaro Ltd.
9  */
10 #ifndef QC_MSM_CAMSS_H
11 #define QC_MSM_CAMSS_H
12 
13 #include <linux/device.h>
14 #include <linux/types.h>
15 #include <media/v4l2-async.h>
16 #include <media/v4l2-device.h>
17 #include <media/v4l2-subdev.h>
18 #include <media/media-device.h>
19 #include <media/media-entity.h>
20 
21 #include "camss-csid.h"
22 #include "camss-csiphy.h"
23 #include "camss-ispif.h"
24 #include "camss-vfe.h"
25 #include "camss-format.h"
26 
27 #define to_camss(ptr_module)	\
28 	container_of(ptr_module, struct camss, ptr_module)
29 
30 #define to_device(ptr_module)	\
31 	(to_camss(ptr_module)->dev)
32 
33 #define module_pointer(ptr_module, index)	\
34 	((const struct ptr_module##_device (*)[]) &(ptr_module[-(index)]))
35 
36 #define to_camss_index(ptr_module, index)	\
37 	container_of(module_pointer(ptr_module, index),	\
38 		     struct camss, ptr_module)
39 
40 #define to_device_index(ptr_module, index)	\
41 	(to_camss_index(ptr_module, index)->dev)
42 
43 #define CAMSS_RES_MAX 17
44 
45 struct camss_subdev_resources {
46 	char *regulators[CAMSS_RES_MAX];
47 	char *clock[CAMSS_RES_MAX];
48 	char *clock_for_reset[CAMSS_RES_MAX];
49 	u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX];
50 	char *reg[CAMSS_RES_MAX];
51 	char *interrupt[CAMSS_RES_MAX];
52 	union {
53 		struct csiphy_subdev_resources csiphy;
54 		struct csid_subdev_resources csid;
55 		struct vfe_subdev_resources vfe;
56 	};
57 };
58 
59 struct icc_bw_tbl {
60 	u32 avg;
61 	u32 peak;
62 };
63 
64 struct resources_icc {
65 	char *name;
66 	struct icc_bw_tbl icc_bw_tbl;
67 };
68 
69 struct resources_wrapper {
70 	char *reg;
71 };
72 
73 enum pm_domain {
74 	PM_DOMAIN_VFE0 = 0,
75 	PM_DOMAIN_VFE1 = 1,
76 	PM_DOMAIN_VFELITE = 2,		/* VFELITE / TOP GDSC */
77 };
78 
79 enum camss_version {
80 	CAMSS_660,
81 	CAMSS_7280,
82 	CAMSS_8x16,
83 	CAMSS_8x53,
84 	CAMSS_8x96,
85 	CAMSS_8250,
86 	CAMSS_8280XP,
87 	CAMSS_845,
88 	CAMSS_8550,
89 };
90 
91 enum icc_count {
92 	ICC_DEFAULT_COUNT = 0,
93 	ICC_SM8250_COUNT = 4,
94 };
95 
96 struct camss_resources {
97 	enum camss_version version;
98 	const char *pd_name;
99 	const struct camss_subdev_resources *csiphy_res;
100 	const struct camss_subdev_resources *csid_res;
101 	const struct camss_subdev_resources *ispif_res;
102 	const struct camss_subdev_resources *vfe_res;
103 	const struct resources_wrapper *csid_wrapper_res;
104 	const struct resources_icc *icc_res;
105 	const unsigned int icc_path_num;
106 	const unsigned int csiphy_num;
107 	const unsigned int csid_num;
108 	const unsigned int vfe_num;
109 	int (*link_entities)(struct camss *camss);
110 };
111 
112 struct camss {
113 	struct v4l2_device v4l2_dev;
114 	struct v4l2_async_notifier notifier;
115 	struct media_device media_dev;
116 	struct device *dev;
117 	struct csiphy_device *csiphy;
118 	struct csid_device *csid;
119 	struct ispif_device *ispif;
120 	struct vfe_device *vfe;
121 	void __iomem *csid_wrapper_base;
122 	atomic_t ref_count;
123 	int genpd_num;
124 	struct device *genpd;
125 	struct device_link *genpd_link;
126 	struct icc_path *icc_path[ICC_SM8250_COUNT];
127 	const struct camss_resources *res;
128 };
129 
130 struct camss_camera_interface {
131 	u8 csiphy_id;
132 	struct csiphy_csi2_cfg csi2;
133 };
134 
135 struct camss_async_subdev {
136 	struct v4l2_async_connection asd; /* must be first */
137 	struct camss_camera_interface interface;
138 };
139 
140 struct camss_clock {
141 	struct clk *clk;
142 	const char *name;
143 	u32 *freq;
144 	u32 nfreqs;
145 };
146 
147 struct parent_dev_ops {
148 	int (*get)(struct camss *camss, int id);
149 	int (*put)(struct camss *camss, int id);
150 	void __iomem *(*get_base_address)(struct camss *camss, int id);
151 };
152 
153 void camss_add_clock_margin(u64 *rate);
154 int camss_enable_clocks(int nclocks, struct camss_clock *clock,
155 			struct device *dev);
156 void camss_disable_clocks(int nclocks, struct camss_clock *clock);
157 struct media_pad *camss_find_sensor_pad(struct media_entity *entity);
158 s64 camss_get_link_freq(struct media_entity *entity, unsigned int bpp,
159 			unsigned int lanes);
160 int camss_get_pixel_clock(struct media_entity *entity, u64 *pixel_clock);
161 int camss_pm_domain_on(struct camss *camss, int id);
162 void camss_pm_domain_off(struct camss *camss, int id);
163 int camss_vfe_get(struct camss *camss, int id);
164 void camss_vfe_put(struct camss *camss, int id);
165 void camss_delete(struct camss *camss);
166 void camss_buf_done(struct camss *camss, int hw_id, int port_id);
167 void camss_reg_update(struct camss *camss, int hw_id,
168 		      int port_id, bool is_clear);
169 
170 #endif /* QC_MSM_CAMSS_H */
171