This source file includes following definitions.
- zpa2326_i2c_hwid
- zpa2326_probe_i2c
- zpa2326_remove_i2c
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10 #include <linux/module.h>
11 #include <linux/regmap.h>
12 #include <linux/i2c.h>
13 #include <linux/of_device.h>
14 #include "zpa2326.h"
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18
19
20 static const struct regmap_config zpa2326_regmap_i2c_config = {
21 .reg_bits = 8,
22 .val_bits = 8,
23 .writeable_reg = zpa2326_isreg_writeable,
24 .readable_reg = zpa2326_isreg_readable,
25 .precious_reg = zpa2326_isreg_precious,
26 .max_register = ZPA2326_TEMP_OUT_H_REG,
27 .read_flag_mask = BIT(7),
28 .cache_type = REGCACHE_NONE,
29 };
30
31 static unsigned int zpa2326_i2c_hwid(const struct i2c_client *client)
32 {
33 #define ZPA2326_SA0(_addr) (_addr & BIT(0))
34 #define ZPA2326_DEVICE_ID_SA0_SHIFT (1)
35
36
37 return (ZPA2326_DEVICE_ID |
38 (ZPA2326_SA0(client->addr) << ZPA2326_DEVICE_ID_SA0_SHIFT));
39 }
40
41 static int zpa2326_probe_i2c(struct i2c_client *client,
42 const struct i2c_device_id *i2c_id)
43 {
44 struct regmap *regmap;
45
46 regmap = devm_regmap_init_i2c(client, &zpa2326_regmap_i2c_config);
47 if (IS_ERR(regmap)) {
48 dev_err(&client->dev, "failed to init registers map");
49 return PTR_ERR(regmap);
50 }
51
52 return zpa2326_probe(&client->dev, i2c_id->name, client->irq,
53 zpa2326_i2c_hwid(client), regmap);
54 }
55
56 static int zpa2326_remove_i2c(struct i2c_client *client)
57 {
58 zpa2326_remove(&client->dev);
59
60 return 0;
61 }
62
63 static const struct i2c_device_id zpa2326_i2c_ids[] = {
64 { "zpa2326", 0 },
65 { },
66 };
67 MODULE_DEVICE_TABLE(i2c, zpa2326_i2c_ids);
68
69 #if defined(CONFIG_OF)
70 static const struct of_device_id zpa2326_i2c_matches[] = {
71 { .compatible = "murata,zpa2326" },
72 { }
73 };
74 MODULE_DEVICE_TABLE(of, zpa2326_i2c_matches);
75 #endif
76
77 static struct i2c_driver zpa2326_i2c_driver = {
78 .driver = {
79 .name = "zpa2326-i2c",
80 .of_match_table = of_match_ptr(zpa2326_i2c_matches),
81 .pm = ZPA2326_PM_OPS,
82 },
83 .probe = zpa2326_probe_i2c,
84 .remove = zpa2326_remove_i2c,
85 .id_table = zpa2326_i2c_ids,
86 };
87 module_i2c_driver(zpa2326_i2c_driver);
88
89 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
90 MODULE_DESCRIPTION("I2C driver for Murata ZPA2326 pressure sensor");
91 MODULE_LICENSE("GPL v2");