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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC4 *5 * Copyright 2007, 2008 Wolfson Microelectronics PLC.6 *7 * Author: Liam Girdwood8 * linux@wolfsonmicro.com9 */10 11#include <linux/err.h>12#include <linux/init.h>13#include <linux/i2c.h>14#include <linux/platform_device.h>15#include <linux/mfd/wm8350/core.h>16#include <linux/regmap.h>17#include <linux/slab.h>18 19static int wm8350_i2c_probe(struct i2c_client *i2c)20{21 struct wm8350 *wm8350;22 struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);23 int ret = 0;24 25 wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);26 if (wm8350 == NULL)27 return -ENOMEM;28 29 wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);30 if (IS_ERR(wm8350->regmap)) {31 ret = PTR_ERR(wm8350->regmap);32 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",33 ret);34 return ret;35 }36 37 i2c_set_clientdata(i2c, wm8350);38 wm8350->dev = &i2c->dev;39 40 return wm8350_device_init(wm8350, i2c->irq, pdata);41}42 43static const struct i2c_device_id wm8350_i2c_id[] = {44 { "wm8350" },45 { "wm8351" },46 { "wm8352" },47 { }48};49 50static struct i2c_driver wm8350_i2c_driver = {51 .driver = {52 .name = "wm8350",53 .suppress_bind_attrs = true,54 },55 .probe = wm8350_i2c_probe,56 .id_table = wm8350_i2c_id,57};58 59static int __init wm8350_i2c_init(void)60{61 return i2c_add_driver(&wm8350_i2c_driver);62}63/* init early so consumer devices can complete system boot */64subsys_initcall(wm8350_i2c_init);65