1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * camss-csiphy.h
4  *
5  * Qualcomm MSM Camera Subsystem - CSIPHY Module
6  *
7  * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
8  * Copyright (C) 2016-2018 Linaro Ltd.
9  */
10 #ifndef QC_MSM_CAMSS_CSIPHY_H
11 #define QC_MSM_CAMSS_CSIPHY_H
12 
13 #include <linux/clk.h>
14 #include <linux/interrupt.h>
15 #include <media/media-entity.h>
16 #include <media/v4l2-device.h>
17 #include <media/v4l2-mediabus.h>
18 #include <media/v4l2-subdev.h>
19 
20 #define MSM_CSIPHY_PAD_SINK 0
21 #define MSM_CSIPHY_PAD_SRC 1
22 #define MSM_CSIPHY_PADS_NUM 2
23 
24 struct csiphy_lane {
25 	u8 pos;
26 	u8 pol;
27 };
28 
29 struct csiphy_lanes_cfg {
30 	int num_data;
31 	struct csiphy_lane *data;
32 	struct csiphy_lane clk;
33 };
34 
35 struct csiphy_csi2_cfg {
36 	struct csiphy_lanes_cfg lane_cfg;
37 };
38 
39 struct csiphy_config {
40 	u8 combo_mode;
41 	u8 csid_id;
42 	struct csiphy_csi2_cfg *csi2;
43 };
44 
45 struct csiphy_format_info {
46 	u32 code;
47 	u8 bpp;
48 };
49 
50 struct csiphy_formats {
51 	unsigned int nformats;
52 	const struct csiphy_format_info *formats;
53 };
54 
55 struct csiphy_device;
56 
57 struct csiphy_hw_ops {
58 	/*
59 	 * csiphy_get_lane_mask - Calculate CSI2 lane mask configuration parameter
60 	 * @lane_cfg - CSI2 lane configuration
61 	 *
62 	 * Return lane mask
63 	 */
64 	u8 (*get_lane_mask)(struct csiphy_lanes_cfg *lane_cfg);
65 	void (*hw_version_read)(struct csiphy_device *csiphy,
66 				struct device *dev);
67 	void (*reset)(struct csiphy_device *csiphy);
68 	void (*lanes_enable)(struct csiphy_device *csiphy,
69 			     struct csiphy_config *cfg,
70 			     s64 link_freq, u8 lane_mask);
71 	void (*lanes_disable)(struct csiphy_device *csiphy,
72 			      struct csiphy_config *cfg);
73 	irqreturn_t (*isr)(int irq, void *dev);
74 };
75 
76 struct csiphy_subdev_resources {
77 	const struct csiphy_hw_ops *hw_ops;
78 	const struct csiphy_formats *formats;
79 };
80 
81 struct csiphy_device {
82 	struct camss *camss;
83 	u8 id;
84 	struct v4l2_subdev subdev;
85 	struct media_pad pads[MSM_CSIPHY_PADS_NUM];
86 	void __iomem *base;
87 	void __iomem *base_clk_mux;
88 	u32 irq;
89 	char irq_name[30];
90 	struct camss_clock *clock;
91 	bool *rate_set;
92 	int nclocks;
93 	u32 timer_clk_rate;
94 	struct csiphy_config cfg;
95 	struct v4l2_mbus_framefmt fmt[MSM_CSIPHY_PADS_NUM];
96 	const struct csiphy_subdev_resources *res;
97 };
98 
99 struct camss_subdev_resources;
100 
101 int msm_csiphy_subdev_init(struct camss *camss,
102 			   struct csiphy_device *csiphy,
103 			   const struct camss_subdev_resources *res, u8 id);
104 
105 int msm_csiphy_register_entity(struct csiphy_device *csiphy,
106 			       struct v4l2_device *v4l2_dev);
107 
108 void msm_csiphy_unregister_entity(struct csiphy_device *csiphy);
109 
110 extern const struct csiphy_formats csiphy_formats_8x16;
111 extern const struct csiphy_formats csiphy_formats_8x96;
112 extern const struct csiphy_formats csiphy_formats_sdm845;
113 
114 extern const struct csiphy_hw_ops csiphy_ops_2ph_1_0;
115 extern const struct csiphy_hw_ops csiphy_ops_3ph_1_0;
116 
117 #endif /* QC_MSM_CAMSS_CSIPHY_H */
118