projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 97fb5e8d | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 4065d1e7 | 2 | /* |
| 9664877e | 3 | * cyttsp_i2c.c |
| 4065d1e7 JMC |
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 | * | |
| 9664877e | 13 | * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com> |
| 4065d1e7 JMC |
14 | */ |
| 15 | ||
| 16 | #include "cyttsp_core.h" | |
| 17 | ||
| 18 | #include <linux/i2c.h> | |
| 19 | #include <linux/input.h> | |
| 20 | ||
| 21 | #define CY_I2C_DATA_SIZE 128 | |
| 22 | ||
| 4065d1e7 JMC |
23 | static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = { |
| 24 | .bustype = BUS_I2C, | |
| 25 | .write = cyttsp_i2c_write_block_data, | |
| 26 | .read = cyttsp_i2c_read_block_data, | |
| 27 | }; | |
| 28 | ||
| 5298cc4c | 29 | static int cyttsp_i2c_probe(struct i2c_client *client, |
| 4065d1e7 JMC |
30 | const struct i2c_device_id *id) |
| 31 | { | |
| 32 | struct cyttsp *ts; | |
| 33 | ||
| 34 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
| 35 | dev_err(&client->dev, "I2C functionality not Supported\n"); | |
| 36 | return -EIO; | |
| 37 | } | |
| 38 | ||
| 39 | ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq, | |
| 40 | CY_I2C_DATA_SIZE); | |
| 41 | ||
| 42 | if (IS_ERR(ts)) | |
| 43 | return PTR_ERR(ts); | |
| 44 | ||
| 45 | i2c_set_clientdata(client, ts); | |
| 4065d1e7 JMC |
46 | return 0; |
| 47 | } | |
| 48 | ||
| 4065d1e7 JMC |
49 | static const struct i2c_device_id cyttsp_i2c_id[] = { |
| 50 | { CY_I2C_NAME, 0 }, | |
| 51 | { } | |
| 52 | }; | |
| 53 | MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id); | |
| 54 | ||
| 55 | static struct i2c_driver cyttsp_i2c_driver = { | |
| 56 | .driver = { | |
| 57 | .name = CY_I2C_NAME, | |
| 4065d1e7 JMC |
58 | .pm = &cyttsp_pm_ops, |
| 59 | }, | |
| 60 | .probe = cyttsp_i2c_probe, | |
| 4065d1e7 JMC |
61 | .id_table = cyttsp_i2c_id, |
| 62 | }; | |
| 63 | ||
| 4a533835 | 64 | module_i2c_driver(cyttsp_i2c_driver); |
| 4065d1e7 JMC |
65 | |
| 66 | MODULE_LICENSE("GPL"); | |
| 67 | MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver"); | |
| 68 | MODULE_AUTHOR("Cypress"); |