Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[platform/kernel/linux-starfive.git] / include / media / ipu-bridge.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Author: Dan Scally <djrscally@gmail.com> */
3 #ifndef __IPU_BRIDGE_H
4 #define __IPU_BRIDGE_H
5
6 #include <linux/property.h>
7 #include <linux/types.h>
8 #include <media/v4l2-fwnode.h>
9
10 #define IPU_HID                         "INT343E"
11 #define IPU_MAX_LANES                           4
12 #define IPU_MAX_PORTS                           4
13 #define MAX_NUM_LINK_FREQS                      3
14
15 /* Values are educated guesses as we don't have a spec */
16 #define IPU_SENSOR_ROTATION_NORMAL              0
17 #define IPU_SENSOR_ROTATION_INVERTED            1
18
19 #define IPU_SENSOR_CONFIG(_HID, _NR, ...)       \
20         (const struct ipu_sensor_config) {      \
21                 .hid = _HID,                    \
22                 .nr_link_freqs = _NR,           \
23                 .link_freqs = { __VA_ARGS__ }   \
24         }
25
26 #define NODE_SENSOR(_HID, _PROPS)               \
27         (const struct software_node) {          \
28                 .name = _HID,                   \
29                 .properties = _PROPS,           \
30         }
31
32 #define NODE_PORT(_PORT, _SENSOR_NODE)          \
33         (const struct software_node) {          \
34                 .name = _PORT,                  \
35                 .parent = _SENSOR_NODE,         \
36         }
37
38 #define NODE_ENDPOINT(_EP, _PORT, _PROPS)       \
39         (const struct software_node) {          \
40                 .name = _EP,                    \
41                 .parent = _PORT,                \
42                 .properties = _PROPS,           \
43         }
44
45 #define NODE_VCM(_TYPE)                         \
46         (const struct software_node) {          \
47                 .name = _TYPE,                  \
48         }
49
50 enum ipu_sensor_swnodes {
51         SWNODE_SENSOR_HID,
52         SWNODE_SENSOR_PORT,
53         SWNODE_SENSOR_ENDPOINT,
54         SWNODE_IPU_PORT,
55         SWNODE_IPU_ENDPOINT,
56         /* below are optional / maybe empty */
57         SWNODE_IVSC_HID,
58         SWNODE_IVSC_SENSOR_PORT,
59         SWNODE_IVSC_SENSOR_ENDPOINT,
60         SWNODE_IVSC_IPU_PORT,
61         SWNODE_IVSC_IPU_ENDPOINT,
62         SWNODE_VCM,
63         SWNODE_COUNT
64 };
65
66 /* Data representation as it is in ACPI SSDB buffer */
67 struct ipu_sensor_ssdb {
68         u8 version;
69         u8 sku;
70         u8 guid_csi2[16];
71         u8 devfunction;
72         u8 bus;
73         u32 dphylinkenfuses;
74         u32 clockdiv;
75         u8 link;
76         u8 lanes;
77         u32 csiparams[10];
78         u32 maxlanespeed;
79         u8 sensorcalibfileidx;
80         u8 sensorcalibfileidxInMBZ[3];
81         u8 romtype;
82         u8 vcmtype;
83         u8 platforminfo;
84         u8 platformsubinfo;
85         u8 flash;
86         u8 privacyled;
87         u8 degree;
88         u8 mipilinkdefined;
89         u32 mclkspeed;
90         u8 controllogicid;
91         u8 reserved1[3];
92         u8 mclkport;
93         u8 reserved2[13];
94 } __packed;
95
96 struct ipu_property_names {
97         char clock_frequency[16];
98         char rotation[9];
99         char orientation[12];
100         char bus_type[9];
101         char data_lanes[11];
102         char remote_endpoint[16];
103         char link_frequencies[17];
104 };
105
106 struct ipu_node_names {
107         char port[7];
108         char ivsc_sensor_port[7];
109         char ivsc_ipu_port[7];
110         char endpoint[11];
111         char remote_port[7];
112         char vcm[16];
113 };
114
115 struct ipu_sensor_config {
116         const char *hid;
117         const u8 nr_link_freqs;
118         const u64 link_freqs[MAX_NUM_LINK_FREQS];
119 };
120
121 struct ipu_sensor {
122         /* append ssdb.link(u8) in "-%u" format as suffix of HID */
123         char name[ACPI_ID_LEN + 4];
124         struct acpi_device *adev;
125
126         struct device *csi_dev;
127         struct acpi_device *ivsc_adev;
128         char ivsc_name[ACPI_ID_LEN + 4];
129
130         /* SWNODE_COUNT + 1 for terminating NULL */
131         const struct software_node *group[SWNODE_COUNT + 1];
132         struct software_node swnodes[SWNODE_COUNT];
133         struct ipu_node_names node_names;
134
135         u8 link;
136         u8 lanes;
137         u32 mclkspeed;
138         u32 rotation;
139         enum v4l2_fwnode_orientation orientation;
140         const char *vcm_type;
141
142         struct ipu_property_names prop_names;
143         struct property_entry ep_properties[5];
144         struct property_entry dev_properties[5];
145         struct property_entry ipu_properties[3];
146         struct property_entry ivsc_properties[1];
147         struct property_entry ivsc_sensor_ep_properties[4];
148         struct property_entry ivsc_ipu_ep_properties[4];
149
150         struct software_node_ref_args local_ref[1];
151         struct software_node_ref_args remote_ref[1];
152         struct software_node_ref_args vcm_ref[1];
153         struct software_node_ref_args ivsc_sensor_ref[1];
154         struct software_node_ref_args ivsc_ipu_ref[1];
155 };
156
157 typedef int (*ipu_parse_sensor_fwnode_t)(struct acpi_device *adev,
158                                          struct ipu_sensor *sensor);
159
160 struct ipu_bridge {
161         struct device *dev;
162         ipu_parse_sensor_fwnode_t parse_sensor_fwnode;
163         char ipu_node_name[ACPI_ID_LEN];
164         struct software_node ipu_hid_node;
165         u32 data_lanes[4];
166         unsigned int n_sensors;
167         struct ipu_sensor sensors[IPU_MAX_PORTS];
168 };
169
170 #if IS_ENABLED(CONFIG_IPU_BRIDGE)
171 int ipu_bridge_init(struct device *dev,
172                     ipu_parse_sensor_fwnode_t parse_sensor_fwnode);
173 int ipu_bridge_parse_ssdb(struct acpi_device *adev, struct ipu_sensor *sensor);
174 int ipu_bridge_instantiate_vcm(struct device *sensor);
175 #else
176 /* Use a define to avoid the @parse_sensor_fwnode argument getting evaluated */
177 #define ipu_bridge_init(dev, parse_sensor_fwnode)       (0)
178 static inline int ipu_bridge_instantiate_vcm(struct device *s) { return 0; }
179 #endif
180
181 #endif