1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Arizona-i2c.c -- Arizona I2C bus interface
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2012 Wolfson Microelectronics plc
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/err.h>
11*4882a593Smuzhiyun #include <linux/i2c.h>
12*4882a593Smuzhiyun #include <linux/module.h>
13*4882a593Smuzhiyun #include <linux/pm_runtime.h>
14*4882a593Smuzhiyun #include <linux/regmap.h>
15*4882a593Smuzhiyun #include <linux/regulator/consumer.h>
16*4882a593Smuzhiyun #include <linux/slab.h>
17*4882a593Smuzhiyun #include <linux/of.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include <linux/mfd/arizona/core.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include "arizona.h"
22*4882a593Smuzhiyun
arizona_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)23*4882a593Smuzhiyun static int arizona_i2c_probe(struct i2c_client *i2c,
24*4882a593Smuzhiyun const struct i2c_device_id *id)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun struct arizona *arizona;
27*4882a593Smuzhiyun const struct regmap_config *regmap_config = NULL;
28*4882a593Smuzhiyun unsigned long type;
29*4882a593Smuzhiyun int ret;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun if (i2c->dev.of_node)
32*4882a593Smuzhiyun type = arizona_of_get_type(&i2c->dev);
33*4882a593Smuzhiyun else
34*4882a593Smuzhiyun type = id->driver_data;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun switch (type) {
37*4882a593Smuzhiyun case WM5102:
38*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_MFD_WM5102))
39*4882a593Smuzhiyun regmap_config = &wm5102_i2c_regmap;
40*4882a593Smuzhiyun break;
41*4882a593Smuzhiyun case WM5110:
42*4882a593Smuzhiyun case WM8280:
43*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_MFD_WM5110))
44*4882a593Smuzhiyun regmap_config = &wm5110_i2c_regmap;
45*4882a593Smuzhiyun break;
46*4882a593Smuzhiyun case WM8997:
47*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_MFD_WM8997))
48*4882a593Smuzhiyun regmap_config = &wm8997_i2c_regmap;
49*4882a593Smuzhiyun break;
50*4882a593Smuzhiyun case WM8998:
51*4882a593Smuzhiyun case WM1814:
52*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_MFD_WM8998))
53*4882a593Smuzhiyun regmap_config = &wm8998_i2c_regmap;
54*4882a593Smuzhiyun break;
55*4882a593Smuzhiyun default:
56*4882a593Smuzhiyun dev_err(&i2c->dev, "Unknown device type %ld\n", type);
57*4882a593Smuzhiyun return -EINVAL;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun if (!regmap_config) {
61*4882a593Smuzhiyun dev_err(&i2c->dev,
62*4882a593Smuzhiyun "No kernel support for device type %ld\n", type);
63*4882a593Smuzhiyun return -EINVAL;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
67*4882a593Smuzhiyun if (arizona == NULL)
68*4882a593Smuzhiyun return -ENOMEM;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
71*4882a593Smuzhiyun if (IS_ERR(arizona->regmap)) {
72*4882a593Smuzhiyun ret = PTR_ERR(arizona->regmap);
73*4882a593Smuzhiyun dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
74*4882a593Smuzhiyun ret);
75*4882a593Smuzhiyun return ret;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun arizona->type = type;
79*4882a593Smuzhiyun arizona->dev = &i2c->dev;
80*4882a593Smuzhiyun arizona->irq = i2c->irq;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun return arizona_dev_init(arizona);
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
arizona_i2c_remove(struct i2c_client * i2c)85*4882a593Smuzhiyun static int arizona_i2c_remove(struct i2c_client *i2c)
86*4882a593Smuzhiyun {
87*4882a593Smuzhiyun struct arizona *arizona = dev_get_drvdata(&i2c->dev);
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun arizona_dev_exit(arizona);
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun return 0;
92*4882a593Smuzhiyun }
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun static const struct i2c_device_id arizona_i2c_id[] = {
95*4882a593Smuzhiyun { "wm5102", WM5102 },
96*4882a593Smuzhiyun { "wm5110", WM5110 },
97*4882a593Smuzhiyun { "wm8280", WM8280 },
98*4882a593Smuzhiyun { "wm8997", WM8997 },
99*4882a593Smuzhiyun { "wm8998", WM8998 },
100*4882a593Smuzhiyun { "wm1814", WM1814 },
101*4882a593Smuzhiyun { }
102*4882a593Smuzhiyun };
103*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun static struct i2c_driver arizona_i2c_driver = {
106*4882a593Smuzhiyun .driver = {
107*4882a593Smuzhiyun .name = "arizona",
108*4882a593Smuzhiyun .pm = &arizona_pm_ops,
109*4882a593Smuzhiyun .of_match_table = of_match_ptr(arizona_of_match),
110*4882a593Smuzhiyun },
111*4882a593Smuzhiyun .probe = arizona_i2c_probe,
112*4882a593Smuzhiyun .remove = arizona_i2c_remove,
113*4882a593Smuzhiyun .id_table = arizona_i2c_id,
114*4882a593Smuzhiyun };
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun module_i2c_driver(arizona_i2c_driver);
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun MODULE_DESCRIPTION("Arizona I2C bus interface");
119*4882a593Smuzhiyun MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
120*4882a593Smuzhiyun MODULE_LICENSE("GPL");
121