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