1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2009-2010 Creative Product Design
4 * Marc Reilly marc@cpdesign.com.au
5 */
6
7 #include <linux/slab.h>
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/mfd/core.h>
11 #include <linux/mfd/mc13xxx.h>
12 #include <linux/of.h>
13 #include <linux/of_device.h>
14 #include <linux/i2c.h>
15 #include <linux/err.h>
16
17 #include "mc13xxx.h"
18
19 static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
20 {
21 .name = "mc13892",
22 .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
23 }, {
24 .name = "mc34708",
25 .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
26 }, {
27 /* sentinel */
28 }
29 };
30 MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
31
32 static const struct of_device_id mc13xxx_dt_ids[] = {
33 {
34 .compatible = "fsl,mc13892",
35 .data = &mc13xxx_variant_mc13892,
36 }, {
37 .compatible = "fsl,mc34708",
38 .data = &mc13xxx_variant_mc34708,
39 }, {
40 /* sentinel */
41 }
42 };
43 MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
44
45 static const struct regmap_config mc13xxx_regmap_i2c_config = {
46 .reg_bits = 8,
47 .val_bits = 24,
48
49 .max_register = MC13XXX_NUMREGS,
50
51 .cache_type = REGCACHE_NONE,
52 };
53
mc13xxx_i2c_probe(struct i2c_client * client)54 static int mc13xxx_i2c_probe(struct i2c_client *client)
55 {
56 struct mc13xxx *mc13xxx;
57 int ret;
58
59 mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
60 if (!mc13xxx)
61 return -ENOMEM;
62
63 dev_set_drvdata(&client->dev, mc13xxx);
64
65 mc13xxx->irq = client->irq;
66
67 mc13xxx->regmap = devm_regmap_init_i2c(client,
68 &mc13xxx_regmap_i2c_config);
69 if (IS_ERR(mc13xxx->regmap)) {
70 ret = PTR_ERR(mc13xxx->regmap);
71 dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
72 return ret;
73 }
74
75 mc13xxx->variant = i2c_get_match_data(client);
76
77 return mc13xxx_common_init(&client->dev);
78 }
79
mc13xxx_i2c_remove(struct i2c_client * client)80 static void mc13xxx_i2c_remove(struct i2c_client *client)
81 {
82 mc13xxx_common_exit(&client->dev);
83 }
84
85 static struct i2c_driver mc13xxx_i2c_driver = {
86 .id_table = mc13xxx_i2c_device_id,
87 .driver = {
88 .name = "mc13xxx",
89 .of_match_table = mc13xxx_dt_ids,
90 },
91 .probe = mc13xxx_i2c_probe,
92 .remove = mc13xxx_i2c_remove,
93 };
94
mc13xxx_i2c_init(void)95 static int __init mc13xxx_i2c_init(void)
96 {
97 return i2c_add_driver(&mc13xxx_i2c_driver);
98 }
99 subsys_initcall(mc13xxx_i2c_init);
100
mc13xxx_i2c_exit(void)101 static void __exit mc13xxx_i2c_exit(void)
102 {
103 i2c_del_driver(&mc13xxx_i2c_driver);
104 }
105 module_exit(mc13xxx_i2c_exit);
106
107 MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
108 MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
109 MODULE_LICENSE("GPL v2");
110