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 int cyttsp_i2c_remove(struct i2c_client *client)
60{
61	struct cyttsp *ts = i2c_get_clientdata(client);
62
63	cyttsp_remove(ts);
64
65	return 0;
66}
67
68static const struct i2c_device_id cyttsp_i2c_id[] = {
69	{ CY_I2C_NAME, 0 },
70	{ }
71};
72MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
73
 
 
 
 
 
 
 
74static struct i2c_driver cyttsp_i2c_driver = {
75	.driver = {
76		.name	= CY_I2C_NAME,
77		.owner	= THIS_MODULE,
78		.pm	= &cyttsp_pm_ops,
79	},
80	.probe		= cyttsp_i2c_probe,
81	.remove		= cyttsp_i2c_remove,
82	.id_table	= cyttsp_i2c_id,
83};
84
85module_i2c_driver(cyttsp_i2c_driver);
86
87MODULE_LICENSE("GPL");
88MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
89MODULE_AUTHOR("Cypress");
90MODULE_ALIAS("i2c:cyttsp");

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * cyttsp_i2c.c
 4 * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
 5 * For use with Cypress Txx3xx parts.
 6 * Supported parts include:
 7 * CY8CTST341
 8 * CY8CTMA340
 9 *
10 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
11 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
12 *
 
 
 
 
 
 
 
 
 
 
13 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
 
14 */
15
16#include "cyttsp_core.h"
17
18#include <linux/i2c.h>
19#include <linux/input.h>
20
21#define CY_I2C_NAME		"cyttsp-i2c"
22
23#define CY_I2C_DATA_SIZE	128
24
25static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
26	.bustype	= BUS_I2C,
27	.write		= cyttsp_i2c_write_block_data,
28	.read           = cyttsp_i2c_read_block_data,
29};
30
31static int cyttsp_i2c_probe(struct i2c_client *client)
 
32{
33	struct cyttsp *ts;
34
35	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
36		dev_err(&client->dev, "I2C functionality not Supported\n");
37		return -EIO;
38	}
39
40	ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
41			  CY_I2C_DATA_SIZE);
42
43	if (IS_ERR(ts))
44		return PTR_ERR(ts);
45
46	i2c_set_clientdata(client, ts);
47	return 0;
48}
49
 
 
 
 
 
 
 
 
 
50static const struct i2c_device_id cyttsp_i2c_id[] = {
51	{ CY_I2C_NAME, 0 },
52	{ }
53};
54MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
55
56static const struct of_device_id cyttsp_of_i2c_match[] = {
57	{ .compatible = "cypress,cy8ctma340", },
58	{ .compatible = "cypress,cy8ctst341", },
59	{ /* sentinel */ }
60};
61MODULE_DEVICE_TABLE(of, cyttsp_of_i2c_match);
62
63static struct i2c_driver cyttsp_i2c_driver = {
64	.driver = {
65		.name	= CY_I2C_NAME,
66		.pm	= pm_sleep_ptr(&cyttsp_pm_ops),
67		.of_match_table = cyttsp_of_i2c_match,
68	},
69	.probe		= cyttsp_i2c_probe,
 
70	.id_table	= cyttsp_i2c_id,
71};
72
73module_i2c_driver(cyttsp_i2c_driver);
74
75MODULE_LICENSE("GPL");
76MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
77MODULE_AUTHOR("Cypress");