1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2009-2010 Creative Product Design
4*4882a593Smuzhiyun * Marc Reilly marc@cpdesign.com.au
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/slab.h>
8*4882a593Smuzhiyun #include <linux/module.h>
9*4882a593Smuzhiyun #include <linux/platform_device.h>
10*4882a593Smuzhiyun #include <linux/mfd/core.h>
11*4882a593Smuzhiyun #include <linux/mfd/mc13xxx.h>
12*4882a593Smuzhiyun #include <linux/of.h>
13*4882a593Smuzhiyun #include <linux/of_device.h>
14*4882a593Smuzhiyun #include <linux/of_gpio.h>
15*4882a593Smuzhiyun #include <linux/i2c.h>
16*4882a593Smuzhiyun #include <linux/err.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "mc13xxx.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun .name = "mc13892",
23*4882a593Smuzhiyun .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
24*4882a593Smuzhiyun }, {
25*4882a593Smuzhiyun .name = "mc34708",
26*4882a593Smuzhiyun .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
27*4882a593Smuzhiyun }, {
28*4882a593Smuzhiyun /* sentinel */
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun static const struct of_device_id mc13xxx_dt_ids[] = {
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun .compatible = "fsl,mc13892",
36*4882a593Smuzhiyun .data = &mc13xxx_variant_mc13892,
37*4882a593Smuzhiyun }, {
38*4882a593Smuzhiyun .compatible = "fsl,mc34708",
39*4882a593Smuzhiyun .data = &mc13xxx_variant_mc34708,
40*4882a593Smuzhiyun }, {
41*4882a593Smuzhiyun /* sentinel */
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun };
44*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun static const struct regmap_config mc13xxx_regmap_i2c_config = {
47*4882a593Smuzhiyun .reg_bits = 8,
48*4882a593Smuzhiyun .val_bits = 24,
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun .max_register = MC13XXX_NUMREGS,
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun .cache_type = REGCACHE_NONE,
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun
mc13xxx_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)55*4882a593Smuzhiyun static int mc13xxx_i2c_probe(struct i2c_client *client,
56*4882a593Smuzhiyun const struct i2c_device_id *id)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun struct mc13xxx *mc13xxx;
59*4882a593Smuzhiyun int ret;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
62*4882a593Smuzhiyun if (!mc13xxx)
63*4882a593Smuzhiyun return -ENOMEM;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun dev_set_drvdata(&client->dev, mc13xxx);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun mc13xxx->irq = client->irq;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun mc13xxx->regmap = devm_regmap_init_i2c(client,
70*4882a593Smuzhiyun &mc13xxx_regmap_i2c_config);
71*4882a593Smuzhiyun if (IS_ERR(mc13xxx->regmap)) {
72*4882a593Smuzhiyun ret = PTR_ERR(mc13xxx->regmap);
73*4882a593Smuzhiyun dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
74*4882a593Smuzhiyun return ret;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun if (client->dev.of_node) {
78*4882a593Smuzhiyun const struct of_device_id *of_id =
79*4882a593Smuzhiyun of_match_device(mc13xxx_dt_ids, &client->dev);
80*4882a593Smuzhiyun mc13xxx->variant = of_id->data;
81*4882a593Smuzhiyun } else {
82*4882a593Smuzhiyun mc13xxx->variant = (void *)id->driver_data;
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun return mc13xxx_common_init(&client->dev);
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
mc13xxx_i2c_remove(struct i2c_client * client)88*4882a593Smuzhiyun static int mc13xxx_i2c_remove(struct i2c_client *client)
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun return mc13xxx_common_exit(&client->dev);
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun static struct i2c_driver mc13xxx_i2c_driver = {
94*4882a593Smuzhiyun .id_table = mc13xxx_i2c_device_id,
95*4882a593Smuzhiyun .driver = {
96*4882a593Smuzhiyun .name = "mc13xxx",
97*4882a593Smuzhiyun .of_match_table = mc13xxx_dt_ids,
98*4882a593Smuzhiyun },
99*4882a593Smuzhiyun .probe = mc13xxx_i2c_probe,
100*4882a593Smuzhiyun .remove = mc13xxx_i2c_remove,
101*4882a593Smuzhiyun };
102*4882a593Smuzhiyun
mc13xxx_i2c_init(void)103*4882a593Smuzhiyun static int __init mc13xxx_i2c_init(void)
104*4882a593Smuzhiyun {
105*4882a593Smuzhiyun return i2c_add_driver(&mc13xxx_i2c_driver);
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun subsys_initcall(mc13xxx_i2c_init);
108*4882a593Smuzhiyun
mc13xxx_i2c_exit(void)109*4882a593Smuzhiyun static void __exit mc13xxx_i2c_exit(void)
110*4882a593Smuzhiyun {
111*4882a593Smuzhiyun i2c_del_driver(&mc13xxx_i2c_driver);
112*4882a593Smuzhiyun }
113*4882a593Smuzhiyun module_exit(mc13xxx_i2c_exit);
114*4882a593Smuzhiyun
115*4882a593Smuzhiyun MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
116*4882a593Smuzhiyun MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
117*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
118