110 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2009-2010 Creative Product Design4 * Marc Reilly marc@cpdesign.com.au5 */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");110