mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
caab277b1d
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation 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 see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
120 lines
2.6 KiB
C
120 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>");
|