112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
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* fxls8471-i2c.c - Linux kernel modules for 3-Axis Smart Orientation
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* /Motion Sensor
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* Version : 01.00
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* Time : Dec.26, 2012
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* Author : rick zhang <rick.zhang@freescale.com>
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*
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* Copyright (C) 2010-2011 Freescale Semiconductor.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include "fxls8471.h"
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static s32 fxls8471_i2c_write(struct fxls8471_data *pdata, u8 reg, u8 val)
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{
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struct i2c_client *client = (struct i2c_client *)pdata->bus_priv;
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return i2c_smbus_write_byte_data(client, reg, val);
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}
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static int fxls8471_i2c_read(struct fxls8471_data *pdata, u8 reg)
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{
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struct i2c_client *client = (struct i2c_client *)pdata->bus_priv;
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int fxls8471_i2c_read_block(struct fxls8471_data *pdata, u8 reg, u8 len,
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u8 *val)
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{
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struct i2c_client *client = (struct i2c_client *)pdata->bus_priv;
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return i2c_smbus_read_i2c_block_data(client, reg, len, val);
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}
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static int fxls8471_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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fxls8471_dev.bus_priv = client;
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fxls8471_dev.bus_type = BUS_I2C;
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fxls8471_dev.irq = client->irq;
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fxls8471_dev.read = fxls8471_i2c_read;
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fxls8471_dev.write = fxls8471_i2c_write;
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fxls8471_dev.read_block = fxls8471_i2c_read_block;
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i2c_set_clientdata(client, &fxls8471_dev);
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return fxls8471_driver_init(&fxls8471_dev);
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}
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static int fxls8471_i2c_remove(struct i2c_client *client)
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{
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return fxls8471_driver_remove(&fxls8471_dev);
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}
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#ifdef CONFIG_PM
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static int fxls8471_i2c_suspend(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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return fxls8471_driver_suspend(i2c_get_clientdata(client));
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}
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static int fxls8471_i2c_resume(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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return fxls8471_driver_resume(i2c_get_clientdata(client));
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}
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#else /* */
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#define fxls8471_i2c_suspend NULL
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#define fxls8471_i2c_resume NULL
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#endif /* */
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static const struct i2c_device_id fxls8471_i2c_id[] = {
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{"fxls8471", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, fxls8471_i2c_id);
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static SIMPLE_DEV_PM_OPS(fxls8471_pm_ops, fxls8471_i2c_suspend,
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fxls8471_i2c_resume);
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static struct i2c_driver fxls8471_i2c_driver = {
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.driver = {
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.name = "fxls8471",
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.owner = THIS_MODULE,
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.pm = &fxls8471_pm_ops,
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},
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.probe = fxls8471_i2c_probe,
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.remove = fxls8471_i2c_remove,
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.id_table = fxls8471_i2c_id,
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};
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module_i2c_driver(fxls8471_i2c_driver);
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MODULE_AUTHOR("Freescale Semiconductor, Inc.");
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MODULE_DESCRIPTION("FXLS8471 3-Axis Acc Sensor driver");
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MODULE_LICENSE("GPL");
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