diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mfd/wm8350-i2c.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mfd/wm8350-i2c.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/ANDROID_3.4.5/drivers/mfd/wm8350-i2c.c b/ANDROID_3.4.5/drivers/mfd/wm8350-i2c.c deleted file mode 100644 index d955faaf..00000000 --- a/ANDROID_3.4.5/drivers/mfd/wm8350-i2c.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC - * - * Copyright 2007, 2008 Wolfson Microelectronics PLC. - * - * Author: Liam Girdwood - * linux@wolfsonmicro.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/i2c.h> -#include <linux/platform_device.h> -#include <linux/mfd/wm8350/core.h> -#include <linux/slab.h> - -static int wm8350_i2c_read_device(struct wm8350 *wm8350, char reg, - int bytes, void *dest) -{ - int ret; - - ret = i2c_master_send(wm8350->i2c_client, ®, 1); - if (ret < 0) - return ret; - ret = i2c_master_recv(wm8350->i2c_client, dest, bytes); - if (ret < 0) - return ret; - if (ret != bytes) - return -EIO; - return 0; -} - -static int wm8350_i2c_write_device(struct wm8350 *wm8350, char reg, - int bytes, void *src) -{ - /* we add 1 byte for device register */ - u8 msg[(WM8350_MAX_REGISTER << 1) + 1]; - int ret; - - if (bytes > ((WM8350_MAX_REGISTER << 1) + 1)) - return -EINVAL; - - msg[0] = reg; - memcpy(&msg[1], src, bytes); - ret = i2c_master_send(wm8350->i2c_client, msg, bytes + 1); - if (ret < 0) - return ret; - if (ret != bytes + 1) - return -EIO; - return 0; -} - -static int wm8350_i2c_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) -{ - struct wm8350 *wm8350; - int ret = 0; - - wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL); - if (wm8350 == NULL) - return -ENOMEM; - - i2c_set_clientdata(i2c, wm8350); - wm8350->dev = &i2c->dev; - wm8350->i2c_client = i2c; - wm8350->read_dev = wm8350_i2c_read_device; - wm8350->write_dev = wm8350_i2c_write_device; - - ret = wm8350_device_init(wm8350, i2c->irq, i2c->dev.platform_data); - if (ret < 0) - goto err; - - return ret; - -err: - return ret; -} - -static int wm8350_i2c_remove(struct i2c_client *i2c) -{ - struct wm8350 *wm8350 = i2c_get_clientdata(i2c); - - wm8350_device_exit(wm8350); - - return 0; -} - -static const struct i2c_device_id wm8350_i2c_id[] = { - { "wm8350", 0 }, - { "wm8351", 0 }, - { "wm8352", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id); - - -static struct i2c_driver wm8350_i2c_driver = { - .driver = { - .name = "wm8350", - .owner = THIS_MODULE, - }, - .probe = wm8350_i2c_probe, - .remove = wm8350_i2c_remove, - .id_table = wm8350_i2c_id, -}; - -static int __init wm8350_i2c_init(void) -{ - return i2c_add_driver(&wm8350_i2c_driver); -} -/* init early so consumer devices can complete system boot */ -subsys_initcall(wm8350_i2c_init); - -static void __exit wm8350_i2c_exit(void) -{ - i2c_del_driver(&wm8350_i2c_driver); -} -module_exit(wm8350_i2c_exit); - -MODULE_DESCRIPTION("I2C support for the WM8350 AudioPlus PMIC"); -MODULE_LICENSE("GPL"); |