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", 0 }, 45 { "wm8351", 0 }, 46 { "wm8352", 0 }, 47 { } 48 }; 49 50 static struct i2c_driver wm8350_i2c_driver = { 51 .driver = { 52 .name = "wm8350", 53 .suppress_bind_attrs = true, 54 }, 55 .probe_new = 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); 65