1/*
2 * cyttsp_i2c.c
3 * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
4 * For use with Cypress  Txx4xx parts.
5 * Supported parts include:
6 * TMA4XX
7 * TMA1036
8 *
9 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
10 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
11 * Copyright (C) 2013 Cypress Semiconductor
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2, and only version 2, as published by the
16 * Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21 * GNU General Public License for more details.
22 *
23 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
24 *
25 */
26
27#include "cyttsp4_core.h"
28
29#include <linux/i2c.h>
30#include <linux/input.h>
31
32#define CYTTSP4_I2C_DATA_SIZE	(3 * 256)
33
34static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {
35	.bustype	= BUS_I2C,
36	.write		= cyttsp_i2c_write_block_data,
37	.read           = cyttsp_i2c_read_block_data,
38};
39
40static int cyttsp4_i2c_probe(struct i2c_client *client,
41				      const struct i2c_device_id *id)
42{
43	struct cyttsp4 *ts;
44
45	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
46		dev_err(&client->dev, "I2C functionality not Supported\n");
47		return -EIO;
48	}
49
50	ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,
51			  CYTTSP4_I2C_DATA_SIZE);
52
53	if (IS_ERR(ts))
54		return PTR_ERR(ts);
55
56	return 0;
57}
58
59static int cyttsp4_i2c_remove(struct i2c_client *client)
60{
61	struct cyttsp4 *ts = i2c_get_clientdata(client);
62
63	cyttsp4_remove(ts);
64
65	return 0;
66}
67
68static const struct i2c_device_id cyttsp4_i2c_id[] = {
69	{ CYTTSP4_I2C_NAME, 0 },
70	{ }
71};
72MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
73
74static struct i2c_driver cyttsp4_i2c_driver = {
75	.driver = {
76		.name	= CYTTSP4_I2C_NAME,
77		.owner	= THIS_MODULE,
78		.pm	= &cyttsp4_pm_ops,
79	},
80	.probe		= cyttsp4_i2c_probe,
81	.remove		= cyttsp4_i2c_remove,
82	.id_table	= cyttsp4_i2c_id,
83};
84
85module_i2c_driver(cyttsp4_i2c_driver);
86
87MODULE_LICENSE("GPL");
88MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
89MODULE_AUTHOR("Cypress");
90MODULE_ALIAS("i2c:cyttsp4");
91