| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 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 | |
| 34 | static 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 | |
| 40 | static 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 | |
| 56 | static 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 | |
| 65 | static const struct i2c_device_id cyttsp4_i2c_id[] = { |
| 66 | { CYTTSP4_I2C_NAME, 0 }, |
| 67 | { } |
| 68 | }; |
| 69 | MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id); |
| 70 | |
| 71 | static 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 | |
| 81 | module_i2c_driver(cyttsp4_i2c_driver); |
| 82 | |
| 83 | MODULE_LICENSE("GPL"); |
| 84 | MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver"); |
| 85 | MODULE_AUTHOR("Cypress"); |