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
 19static 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};
 30MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
 31
 32static 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};
 43MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
 44
 45static 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
 54static 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
 80static void mc13xxx_i2c_remove(struct i2c_client *client)
 81{
 82	mc13xxx_common_exit(&client->dev);
 83}
 84
 85static 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
 95static int __init mc13xxx_i2c_init(void)
 96{
 97	return i2c_add_driver(&mc13xxx_i2c_driver);
 98}
 99subsys_initcall(mc13xxx_i2c_init);
100
101static void __exit mc13xxx_i2c_exit(void)
102{
103	i2c_del_driver(&mc13xxx_i2c_driver);
104}
105module_exit(mc13xxx_i2c_exit);
106
107MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
108MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
109MODULE_LICENSE("GPL v2");