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f2bc114b82
The drivers have a I2C device ID table that is used to create the module aliases and also "cyttsp" and "cyttsp4" are not supported I2C device IDs so these module aliases are never used. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
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* cyttsp_i2c.c
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* Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
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* For use with Cypress Txx3xx parts.
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* Supported parts include:
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* CY8CTST341
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* CY8CTMA340
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*
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* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
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* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2, and only version 2, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
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*
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*/
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#include "cyttsp_core.h"
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#include <linux/i2c.h>
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#include <linux/input.h>
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#define CY_I2C_DATA_SIZE 128
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static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
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.bustype = BUS_I2C,
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.write = cyttsp_i2c_write_block_data,
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.read = cyttsp_i2c_read_block_data,
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};
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static int cyttsp_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct cyttsp *ts;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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dev_err(&client->dev, "I2C functionality not Supported\n");
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return -EIO;
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}
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ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
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CY_I2C_DATA_SIZE);
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if (IS_ERR(ts))
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return PTR_ERR(ts);
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i2c_set_clientdata(client, ts);
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return 0;
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}
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static int cyttsp_i2c_remove(struct i2c_client *client)
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{
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struct cyttsp *ts = i2c_get_clientdata(client);
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cyttsp_remove(ts);
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return 0;
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}
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static const struct i2c_device_id cyttsp_i2c_id[] = {
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{ CY_I2C_NAME, 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
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static struct i2c_driver cyttsp_i2c_driver = {
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.driver = {
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.name = CY_I2C_NAME,
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.pm = &cyttsp_pm_ops,
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},
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.probe = cyttsp_i2c_probe,
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.remove = cyttsp_i2c_remove,
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.id_table = cyttsp_i2c_id,
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};
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module_i2c_driver(cyttsp_i2c_driver);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
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MODULE_AUTHOR("Cypress");
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