1/*
 2 * cyttsp_i2c.c
 3 * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
 4 * For use with Cypress Txx3xx parts.
 5 * Supported parts include:
 6 * CY8CTST341
 7 * CY8CTMA340
 8 *
 9 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
10 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * version 2, and only version 2, as published by the
15 * Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20 * GNU General Public License for more details.
21 *
22 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
23 *
24 */
25
26#include "cyttsp_core.h"
27
28#include <linux/i2c.h>
29#include <linux/input.h>
30
31#define CY_I2C_DATA_SIZE	128
32
33static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
34	.bustype	= BUS_I2C,
35	.write		= cyttsp_i2c_write_block_data,
36	.read           = cyttsp_i2c_read_block_data,
37};
38
39static int cyttsp_i2c_probe(struct i2c_client *client,
40				      const struct i2c_device_id *id)
41{
42	struct cyttsp *ts;
43
44	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
45		dev_err(&client->dev, "I2C functionality not Supported\n");
46		return -EIO;
47	}
48
49	ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
50			  CY_I2C_DATA_SIZE);
51
52	if (IS_ERR(ts))
53		return PTR_ERR(ts);
54
55	i2c_set_clientdata(client, ts);
56	return 0;
57}
58
59static const struct i2c_device_id cyttsp_i2c_id[] = {
60	{ CY_I2C_NAME, 0 },
61	{ }
62};
63MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
64
65static struct i2c_driver cyttsp_i2c_driver = {
66	.driver = {
67		.name	= CY_I2C_NAME,
68		.pm	= &cyttsp_pm_ops,
69	},
70	.probe		= cyttsp_i2c_probe,
71	.id_table	= cyttsp_i2c_id,
72};
73
74module_i2c_driver(cyttsp_i2c_driver);
75
76MODULE_LICENSE("GPL");
77MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
78MODULE_AUTHOR("Cypress");