1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /* I2C access for DA9055 PMICs.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright(c) 2012 Dialog Semiconductor Ltd.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Author: David Dajun Chen <dchen@diasemi.com>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/module.h>
10*4882a593Smuzhiyun #include <linux/device.h>
11*4882a593Smuzhiyun #include <linux/i2c.h>
12*4882a593Smuzhiyun #include <linux/err.h>
13*4882a593Smuzhiyun #include <linux/of.h>
14*4882a593Smuzhiyun #include <linux/of_device.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <linux/mfd/da9055/core.h>
17*4882a593Smuzhiyun
da9055_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)18*4882a593Smuzhiyun static int da9055_i2c_probe(struct i2c_client *i2c,
19*4882a593Smuzhiyun const struct i2c_device_id *id)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun struct da9055 *da9055;
22*4882a593Smuzhiyun int ret;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
25*4882a593Smuzhiyun if (!da9055)
26*4882a593Smuzhiyun return -ENOMEM;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
29*4882a593Smuzhiyun if (IS_ERR(da9055->regmap)) {
30*4882a593Smuzhiyun ret = PTR_ERR(da9055->regmap);
31*4882a593Smuzhiyun dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
32*4882a593Smuzhiyun ret);
33*4882a593Smuzhiyun return ret;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun da9055->dev = &i2c->dev;
37*4882a593Smuzhiyun da9055->chip_irq = i2c->irq;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun i2c_set_clientdata(i2c, da9055);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun return da9055_device_init(da9055);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
da9055_i2c_remove(struct i2c_client * i2c)44*4882a593Smuzhiyun static int da9055_i2c_remove(struct i2c_client *i2c)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun struct da9055 *da9055 = i2c_get_clientdata(i2c);
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun da9055_device_exit(da9055);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun return 0;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /*
54*4882a593Smuzhiyun * DO NOT change the device Ids. The naming is intentionally specific as both
55*4882a593Smuzhiyun * the PMIC and CODEC parts of this chip are instantiated separately as I2C
56*4882a593Smuzhiyun * devices (both have configurable I2C addresses, and are to all intents and
57*4882a593Smuzhiyun * purposes separate). As a result there are specific DA9055 ids for PMIC
58*4882a593Smuzhiyun * and CODEC, which must be different to operate together.
59*4882a593Smuzhiyun */
60*4882a593Smuzhiyun static const struct i2c_device_id da9055_i2c_id[] = {
61*4882a593Smuzhiyun {"da9055-pmic", 0},
62*4882a593Smuzhiyun { }
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun static const struct of_device_id da9055_of_match[] = {
67*4882a593Smuzhiyun { .compatible = "dlg,da9055-pmic", },
68*4882a593Smuzhiyun { }
69*4882a593Smuzhiyun };
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun static struct i2c_driver da9055_i2c_driver = {
72*4882a593Smuzhiyun .probe = da9055_i2c_probe,
73*4882a593Smuzhiyun .remove = da9055_i2c_remove,
74*4882a593Smuzhiyun .id_table = da9055_i2c_id,
75*4882a593Smuzhiyun .driver = {
76*4882a593Smuzhiyun .name = "da9055-pmic",
77*4882a593Smuzhiyun .of_match_table = of_match_ptr(da9055_of_match),
78*4882a593Smuzhiyun },
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun
da9055_i2c_init(void)81*4882a593Smuzhiyun static int __init da9055_i2c_init(void)
82*4882a593Smuzhiyun {
83*4882a593Smuzhiyun int ret;
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun ret = i2c_add_driver(&da9055_i2c_driver);
86*4882a593Smuzhiyun if (ret != 0) {
87*4882a593Smuzhiyun pr_err("DA9055 I2C registration failed %d\n", ret);
88*4882a593Smuzhiyun return ret;
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun return 0;
92*4882a593Smuzhiyun }
93*4882a593Smuzhiyun subsys_initcall(da9055_i2c_init);
94*4882a593Smuzhiyun
da9055_i2c_exit(void)95*4882a593Smuzhiyun static void __exit da9055_i2c_exit(void)
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun i2c_del_driver(&da9055_i2c_driver);
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun module_exit(da9055_i2c_exit);
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
102*4882a593Smuzhiyun MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
103*4882a593Smuzhiyun MODULE_LICENSE("GPL");
104