121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Implements I2C interface for VTI CMA300_D0x Accelerometer driver
|
||
|
|
*
|
||
|
|
* Copyright (C) 2010 Texas Instruments
|
||
|
|
* Author: Hemanth V <hemanthv@ti.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/input/cma3000.h>
|
||
|
|
#include "cma3000_d0x.h"
|
||
|
|
|
||
|
|
static int cma3000_i2c_set(struct device *dev,
|
||
|
|
u8 reg, u8 val, char *msg)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = to_i2c_client(dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = i2c_smbus_write_byte_data(client, reg, val);
|
||
|
|
if (ret < 0)
|
||
|
|
dev_err(&client->dev,
|
||
|
|
"%s failed (%s, %d)\n", __func__, msg, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int cma3000_i2c_read(struct device *dev, u8 reg, char *msg)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = to_i2c_client(dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = i2c_smbus_read_byte_data(client, reg);
|
||
|
|
if (ret < 0)
|
||
|
|
dev_err(&client->dev,
|
||
|
|
"%s failed (%s, %d)\n", __func__, msg, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct cma3000_bus_ops cma3000_i2c_bops = {
|
||
|
|
.bustype = BUS_I2C,
|
||
|
|
#define CMA3000_BUSI2C (0 << 4)
|
||
|
|
.ctrl_mod = CMA3000_BUSI2C,
|
||
|
|
.read = cma3000_i2c_read,
|
||
|
|
.write = cma3000_i2c_set,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int cma3000_i2c_probe(struct i2c_client *client,
|
||
|
|
const struct i2c_device_id *id)
|
||
|
|
{
|
||
|
|
struct cma3000_accl_data *data;
|
||
|
|
|
||
|
|
data = cma3000_init(&client->dev, client->irq, &cma3000_i2c_bops);
|
||
|
|
if (IS_ERR(data))
|
||
|
|
return PTR_ERR(data);
|
||
|
|
|
||
|
|
i2c_set_clientdata(client, data);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int cma3000_i2c_remove(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
cma3000_exit(data);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_PM
|
||
|
|
static int cma3000_i2c_suspend(struct device *dev)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = to_i2c_client(dev);
|
||
|
|
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
cma3000_suspend(data);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int cma3000_i2c_resume(struct device *dev)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = to_i2c_client(dev);
|
||
|
|
struct cma3000_accl_data *data = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
cma3000_resume(data);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct dev_pm_ops cma3000_i2c_pm_ops = {
|
||
|
|
.suspend = cma3000_i2c_suspend,
|
||
|
|
.resume = cma3000_i2c_resume,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static const struct i2c_device_id cma3000_i2c_id[] = {
|
||
|
|
{ "cma3000_d01", 0 },
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
|
||
|
|
MODULE_DEVICE_TABLE(i2c, cma3000_i2c_id);
|
||
|
|
|
||
|
|
static struct i2c_driver cma3000_i2c_driver = {
|
||
|
|
.probe = cma3000_i2c_probe,
|
||
|
|
.remove = cma3000_i2c_remove,
|
||
|
|
.id_table = cma3000_i2c_id,
|
||
|
|
.driver = {
|
||
|
|
.name = "cma3000_i2c_accl",
|
||
|
|
#ifdef CONFIG_PM
|
||
|
|
.pm = &cma3000_i2c_pm_ops,
|
||
|
|
#endif
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
module_i2c_driver(cma3000_i2c_driver);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
|