84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
|
|
* TSC2004 touchscreen driver
|
|
*
|
|
* Copyright (C) 2015 QWERTY Embedded Design
|
|
* Copyright (C) 2015 EMAC Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/input.h>
|
|
#include <linux/of.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/regmap.h>
|
|
#include "tsc200x-core.h"
|
|
|
|
static int tsc2004_cmd(struct device *dev, u8 cmd)
|
|
{
|
|
u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd;
|
|
s32 data;
|
|
struct i2c_client *i2c = to_i2c_client(dev);
|
|
|
|
data = i2c_smbus_write_byte(i2c, tx);
|
|
if (data < 0) {
|
|
dev_err(dev, "%s: failed, command: %x i2c error: %d\n",
|
|
__func__, cmd, data);
|
|
return data;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsc2004_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
|
|
{
|
|
return tsc200x_probe(&i2c->dev, i2c->irq, BUS_I2C,
|
|
devm_regmap_init_i2c(i2c, &tsc200x_regmap_config),
|
|
tsc2004_cmd);
|
|
}
|
|
|
|
static int tsc2004_remove(struct i2c_client *i2c)
|
|
{
|
|
return tsc200x_remove(&i2c->dev);
|
|
}
|
|
|
|
static const struct i2c_device_id tsc2004_idtable[] = {
|
|
{ "tsc2004", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tsc2004_idtable);
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id tsc2004_of_match[] = {
|
|
{ .compatible = "ti,tsc2004" },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tsc2004_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver tsc2004_driver = {
|
|
.driver = {
|
|
.name = "tsc2004",
|
|
.of_match_table = of_match_ptr(tsc2004_of_match),
|
|
.pm = &tsc200x_pm_ops,
|
|
},
|
|
.id_table = tsc2004_idtable,
|
|
.probe = tsc2004_probe,
|
|
.remove = tsc2004_remove,
|
|
};
|
|
module_i2c_driver(tsc2004_driver);
|
|
|
|
MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>");
|
|
MODULE_DESCRIPTION("TSC2004 Touchscreen Driver");
|
|
MODULE_LICENSE("GPL");
|