net: mscc: ocelot: cross-check the sequence id from the timestamp FIFO with the skb...
[linux-2.6-microblaze.git] / drivers / mfd / arizona-i2c.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Arizona-i2c.c  --  Arizona I2C bus interface
4  *
5  * Copyright 2012 Wolfson Microelectronics plc
6  *
7  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8  */
9
10 #include <linux/err.h>
11 #include <linux/i2c.h>
12 #include <linux/module.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/regmap.h>
15 #include <linux/regulator/consumer.h>
16 #include <linux/slab.h>
17 #include <linux/of.h>
18
19 #include <linux/mfd/arizona/core.h>
20
21 #include "arizona.h"
22
23 static int arizona_i2c_probe(struct i2c_client *i2c,
24                              const struct i2c_device_id *id)
25 {
26         const void *match_data;
27         struct arizona *arizona;
28         const struct regmap_config *regmap_config = NULL;
29         unsigned long type = 0;
30         int ret;
31
32         match_data = device_get_match_data(&i2c->dev);
33         if (match_data)
34                 type = (unsigned long)match_data;
35         else if (id)
36                 type = id->driver_data;
37
38         switch (type) {
39         case WM5102:
40                 if (IS_ENABLED(CONFIG_MFD_WM5102))
41                         regmap_config = &wm5102_i2c_regmap;
42                 break;
43         case WM5110:
44         case WM8280:
45                 if (IS_ENABLED(CONFIG_MFD_WM5110))
46                         regmap_config = &wm5110_i2c_regmap;
47                 break;
48         case WM8997:
49                 if (IS_ENABLED(CONFIG_MFD_WM8997))
50                         regmap_config = &wm8997_i2c_regmap;
51                 break;
52         case WM8998:
53         case WM1814:
54                 if (IS_ENABLED(CONFIG_MFD_WM8998))
55                         regmap_config = &wm8998_i2c_regmap;
56                 break;
57         default:
58                 dev_err(&i2c->dev, "Unknown device type %ld\n", type);
59                 return -EINVAL;
60         }
61
62         if (!regmap_config) {
63                 dev_err(&i2c->dev,
64                         "No kernel support for device type %ld\n", type);
65                 return -EINVAL;
66         }
67
68         arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
69         if (arizona == NULL)
70                 return -ENOMEM;
71
72         arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
73         if (IS_ERR(arizona->regmap)) {
74                 ret = PTR_ERR(arizona->regmap);
75                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
76                         ret);
77                 return ret;
78         }
79
80         arizona->type = type;
81         arizona->dev = &i2c->dev;
82         arizona->irq = i2c->irq;
83
84         return arizona_dev_init(arizona);
85 }
86
87 static int arizona_i2c_remove(struct i2c_client *i2c)
88 {
89         struct arizona *arizona = dev_get_drvdata(&i2c->dev);
90
91         arizona_dev_exit(arizona);
92
93         return 0;
94 }
95
96 static const struct i2c_device_id arizona_i2c_id[] = {
97         { "wm5102", WM5102 },
98         { "wm5110", WM5110 },
99         { "wm8280", WM8280 },
100         { "wm8997", WM8997 },
101         { "wm8998", WM8998 },
102         { "wm1814", WM1814 },
103         { }
104 };
105 MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
106
107 static struct i2c_driver arizona_i2c_driver = {
108         .driver = {
109                 .name   = "arizona",
110                 .pm     = &arizona_pm_ops,
111                 .of_match_table = of_match_ptr(arizona_of_match),
112         },
113         .probe          = arizona_i2c_probe,
114         .remove         = arizona_i2c_remove,
115         .id_table       = arizona_i2c_id,
116 };
117
118 module_i2c_driver(arizona_i2c_driver);
119
120 MODULE_SOFTDEP("pre: arizona_ldo1");
121 MODULE_DESCRIPTION("Arizona I2C bus interface");
122 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
123 MODULE_LICENSE("GPL");