diff options
Diffstat (limited to 'drivers/input/misc/fxls8471_i2c.c')
| -rw-r--r-- | drivers/input/misc/fxls8471_i2c.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/input/misc/fxls8471_i2c.c b/drivers/input/misc/fxls8471_i2c.c new file mode 100644 index 000000000000..f752ddd0d14b --- /dev/null +++ b/drivers/input/misc/fxls8471_i2c.c @@ -0,0 +1,111 @@ +/* + * fxls8471-i2c.c - Linux kernel modules for 3-Axis Smart Orientation + * /Motion Sensor + * Version : 01.00 + * Time : Dec.26, 2012 + * Author : rick zhang <rick.zhang@freescale.com> + * + * Copyright (C) 2010-2011 Freescale Semiconductor. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include "fxls8471.h" + +static s32 fxls8471_i2c_write(struct fxls8471_data *pdata, u8 reg, u8 val) +{ + struct i2c_client *client = (struct i2c_client *)pdata->bus_priv; + return i2c_smbus_write_byte_data(client, reg, val); +} + +static int fxls8471_i2c_read(struct fxls8471_data *pdata, u8 reg) +{ + struct i2c_client *client = (struct i2c_client *)pdata->bus_priv; + return i2c_smbus_read_byte_data(client, reg); +} + +static int fxls8471_i2c_read_block(struct fxls8471_data *pdata, u8 reg, u8 len, + u8 *val) +{ + struct i2c_client *client = (struct i2c_client *)pdata->bus_priv; + return i2c_smbus_read_i2c_block_data(client, reg, len, val); +} + +static int fxls8471_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + fxls8471_dev.bus_priv = client; + fxls8471_dev.bus_type = BUS_I2C; + fxls8471_dev.irq = client->irq; + fxls8471_dev.read = fxls8471_i2c_read; + fxls8471_dev.write = fxls8471_i2c_write; + fxls8471_dev.read_block = fxls8471_i2c_read_block; + i2c_set_clientdata(client, &fxls8471_dev); + return fxls8471_driver_init(&fxls8471_dev); +} + +static int fxls8471_i2c_remove(struct i2c_client *client) +{ + return fxls8471_driver_remove(&fxls8471_dev); +} + +#ifdef CONFIG_PM +static int fxls8471_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + return fxls8471_driver_suspend(i2c_get_clientdata(client)); +} + +static int fxls8471_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + return fxls8471_driver_resume(i2c_get_clientdata(client)); +} + +#else /* */ +#define fxls8471_i2c_suspend NULL +#define fxls8471_i2c_resume NULL +#endif /* */ +static const struct i2c_device_id fxls8471_i2c_id[] = { + {"fxls8471", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, fxls8471_i2c_id); + +static SIMPLE_DEV_PM_OPS(fxls8471_pm_ops, fxls8471_i2c_suspend, + fxls8471_i2c_resume); + +static struct i2c_driver fxls8471_i2c_driver = { + .driver = { + .name = "fxls8471", + .owner = THIS_MODULE, + .pm = &fxls8471_pm_ops, + }, + .probe = fxls8471_i2c_probe, + .remove = fxls8471_i2c_remove, + .id_table = fxls8471_i2c_id, +}; + +module_i2c_driver(fxls8471_i2c_driver); +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("FXLS8471 3-Axis Acc Sensor driver"); +MODULE_LICENSE("GPL"); |