drivers/mfd/wm8350-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * wm8350-i2c.c  --  Generic I2C driver for Wolfson WM8350 PMIC
   4  *
   5  * Copyright 2007, 2008 Wolfson Microelectronics PLC.
   6  *
   7  * Author: Liam Girdwood
   8  *         linux@wolfsonmicro.com
   9  */
  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
  19 static 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
  43 static const struct i2c_device_id wm8350_i2c_id[] = {
  44         { "wm8350" },
  45         { "wm8351" },
  46         { "wm8352" },
  47         { }
  48 };
  49
  50 static 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
  59 static 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 */
  64 subsys_initcall(wm8350_i2c_init);