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