drivers/mfd/wm8350-i2c.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * wm8350-i2c.c  --  Generic I2C driver for Wolfson WM8350 PMIC
0004  *
0005  * Copyright 2007, 2008 Wolfson Microelectronics PLC.
0006  *
0007  * Author: Liam Girdwood
0008  *         linux@wolfsonmicro.com
0009  */
0010
0011 #include <linux/err.h>
0012 #include <linux/init.h>
0013 #include <linux/i2c.h>
0014 #include <linux/platform_device.h>
0015 #include <linux/mfd/wm8350/core.h>
0016 #include <linux/regmap.h>
0017 #include <linux/slab.h>
0018
0019 static int wm8350_i2c_probe(struct i2c_client *i2c,
0020                 const struct i2c_device_id *id)
0021 {
0022     struct wm8350 *wm8350;
0023     struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);
0024     int ret = 0;
0025
0026     wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
0027     if (wm8350 == NULL)
0028         return -ENOMEM;
0029
0030     wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
0031     if (IS_ERR(wm8350->regmap)) {
0032         ret = PTR_ERR(wm8350->regmap);
0033         dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
0034             ret);
0035         return ret;
0036     }
0037
0038     i2c_set_clientdata(i2c, wm8350);
0039     wm8350->dev = &i2c->dev;
0040
0041     return wm8350_device_init(wm8350, i2c->irq, pdata);
0042 }
0043
0044 static const struct i2c_device_id wm8350_i2c_id[] = {
0045     { "wm8350", 0 },
0046     { "wm8351", 0 },
0047     { "wm8352", 0 },
0048     { }
0049 };
0050
0051 static struct i2c_driver wm8350_i2c_driver = {
0052     .driver = {
0053            .name = "wm8350",
0054            .suppress_bind_attrs = true,
0055     },
0056     .probe = wm8350_i2c_probe,
0057     .id_table = wm8350_i2c_id,
0058 };
0059
0060 static int __init wm8350_i2c_init(void)
0061 {
0062     return i2c_add_driver(&wm8350_i2c_driver);
0063 }
0064 /* init early so consumer devices can complete system boot */
0065 subsys_initcall(wm8350_i2c_init);