tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 return PTR_ERR_OR_ZERO(ts);
54}
55
56static int cyttsp4_i2c_remove(struct i2c_client *client)
57{
58 struct cyttsp4 *ts = i2c_get_clientdata(client);
59
60 cyttsp4_remove(ts);
61
62 return 0;
63}
64
65static const struct i2c_device_id cyttsp4_i2c_id[] = {
66 { CYTTSP4_I2C_NAME, 0 },
67 { }
68};
69MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
70
71static struct i2c_driver cyttsp4_i2c_driver = {
72 .driver = {
73 .name = CYTTSP4_I2C_NAME,
74 .pm = &cyttsp4_pm_ops,
75 },
76 .probe = cyttsp4_i2c_probe,
77 .remove = cyttsp4_i2c_remove,
78 .id_table = cyttsp4_i2c_id,
79};
80
81module_i2c_driver(cyttsp4_i2c_driver);
82
83MODULE_LICENSE("GPL");
84MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
85MODULE_AUTHOR("Cypress");