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/*
* 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 const struct input_id tsc2004_input_id = {
.bustype = BUS_I2C,
.product = 2004,
};
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, &tsc2004_input_id,
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");
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