1 /* 2 * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC 3 * 4 * Copyright 2007, 2008 Wolfson Microelectronics PLC. 5 * 6 * Author: Liam Girdwood 7 * linux@wolfsonmicro.com 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the 11 * Free Software Foundation; either version 2 of the License, or (at your 12 * option) any later version. 13 * 14 */ 15 16 #include <linux/err.h> 17 #include <linux/init.h> 18 #include <linux/i2c.h> 19 #include <linux/platform_device.h> 20 #include <linux/mfd/wm8350/core.h> 21 #include <linux/regmap.h> 22 #include <linux/slab.h> 23 24 static int wm8350_i2c_probe(struct i2c_client *i2c, 25 const struct i2c_device_id *id) 26 { 27 struct wm8350 *wm8350; 28 struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev); 29 int ret = 0; 30 31 wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL); 32 if (wm8350 == NULL) 33 return -ENOMEM; 34 35 wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap); 36 if (IS_ERR(wm8350->regmap)) { 37 ret = PTR_ERR(wm8350->regmap); 38 dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 39 ret); 40 return ret; 41 } 42 43 i2c_set_clientdata(i2c, wm8350); 44 wm8350->dev = &i2c->dev; 45 46 return wm8350_device_init(wm8350, i2c->irq, pdata); 47 } 48 49 static const struct i2c_device_id wm8350_i2c_id[] = { 50 { "wm8350", 0 }, 51 { "wm8351", 0 }, 52 { "wm8352", 0 }, 53 { } 54 }; 55 56 static struct i2c_driver wm8350_i2c_driver = { 57 .driver = { 58 .name = "wm8350", 59 .suppress_bind_attrs = true, 60 }, 61 .probe = wm8350_i2c_probe, 62 .id_table = wm8350_i2c_id, 63 }; 64 65 static int __init wm8350_i2c_init(void) 66 { 67 return i2c_add_driver(&wm8350_i2c_driver); 68 } 69 /* init early so consumer devices can complete system boot */ 70 subsys_initcall(wm8350_i2c_init); 71