1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * cyttsp_i2c.c
4*4882a593Smuzhiyun * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
5*4882a593Smuzhiyun * For use with Cypress Txx4xx parts.
6*4882a593Smuzhiyun * Supported parts include:
7*4882a593Smuzhiyun * TMA4XX
8*4882a593Smuzhiyun * TMA1036
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
11*4882a593Smuzhiyun * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
12*4882a593Smuzhiyun * Copyright (C) 2013 Cypress Semiconductor
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
15*4882a593Smuzhiyun */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include "cyttsp4_core.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include <linux/i2c.h>
20*4882a593Smuzhiyun #include <linux/input.h>
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #define CYTTSP4_I2C_DATA_SIZE (3 * 256)
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {
25*4882a593Smuzhiyun .bustype = BUS_I2C,
26*4882a593Smuzhiyun .write = cyttsp_i2c_write_block_data,
27*4882a593Smuzhiyun .read = cyttsp_i2c_read_block_data,
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun
cyttsp4_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)30*4882a593Smuzhiyun static int cyttsp4_i2c_probe(struct i2c_client *client,
31*4882a593Smuzhiyun const struct i2c_device_id *id)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun struct cyttsp4 *ts;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
36*4882a593Smuzhiyun dev_err(&client->dev, "I2C functionality not Supported\n");
37*4882a593Smuzhiyun return -EIO;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,
41*4882a593Smuzhiyun CYTTSP4_I2C_DATA_SIZE);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun return PTR_ERR_OR_ZERO(ts);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
cyttsp4_i2c_remove(struct i2c_client * client)46*4882a593Smuzhiyun static int cyttsp4_i2c_remove(struct i2c_client *client)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun struct cyttsp4 *ts = i2c_get_clientdata(client);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun cyttsp4_remove(ts);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun return 0;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun static const struct i2c_device_id cyttsp4_i2c_id[] = {
56*4882a593Smuzhiyun { CYTTSP4_I2C_NAME, 0 },
57*4882a593Smuzhiyun { }
58*4882a593Smuzhiyun };
59*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun static struct i2c_driver cyttsp4_i2c_driver = {
62*4882a593Smuzhiyun .driver = {
63*4882a593Smuzhiyun .name = CYTTSP4_I2C_NAME,
64*4882a593Smuzhiyun .pm = &cyttsp4_pm_ops,
65*4882a593Smuzhiyun },
66*4882a593Smuzhiyun .probe = cyttsp4_i2c_probe,
67*4882a593Smuzhiyun .remove = cyttsp4_i2c_remove,
68*4882a593Smuzhiyun .id_table = cyttsp4_i2c_id,
69*4882a593Smuzhiyun };
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun module_i2c_driver(cyttsp4_i2c_driver);
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun MODULE_LICENSE("GPL");
74*4882a593Smuzhiyun MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
75*4882a593Smuzhiyun MODULE_AUTHOR("Cypress");
76