LXR linux/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
  19static int wm8350_i2c_probe(struct i2c_client *i2c,
  20                            const struct i2c_device_id *id)
  21{
  22        struct wm8350 *wm8350;
  23        struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);
  24        int ret = 0;
  25
  26        wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
  27        if (wm8350 == NULL)
  28                return -ENOMEM;
  29
  30        wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
  31        if (IS_ERR(wm8350->regmap)) {
  32                ret = PTR_ERR(wm8350->regmap);
  33                dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
  34                        ret);
  35                return ret;
  36        }
  37
  38        i2c_set_clientdata(i2c, wm8350);
  39        wm8350->dev = &i2c->dev;
  40
  41        return wm8350_device_init(wm8350, i2c->irq, pdata);
  42}
  43
  44static const struct i2c_device_id wm8350_i2c_id[] = {
  45        { "wm8350", 0 },
  46        { "wm8351", 0 },
  47        { "wm8352", 0 },
  48        { }
  49};
  50
  51static struct i2c_driver wm8350_i2c_driver = {
  52        .driver = {
  53                   .name = "wm8350",
  54                   .suppress_bind_attrs = true,
  55        },
  56        .probe = wm8350_i2c_probe,
  57        .id_table = wm8350_i2c_id,
  58};
  59
  60static int __init wm8350_i2c_init(void)
  61{
  62        return i2c_add_driver(&wm8350_i2c_driver);
  63}
  64/* init early so consumer devices can complete system boot */
  65subsys_initcall(wm8350_i2c_init);
  66