9664877ed8
Existing I2C code is for TrueTouch Gen3 devices TrueTouch Gen4 device is using same protocol, will split driver into two pieces to use common code with both drivers. Read/Write functions parameter list modified, since shared code will be used by two separate drivers and these drivers are not sharing same structs, parameters updated to use common structures. Signed-off-by: Ferruh Yigit <fery@cypress.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
91 lines
2.2 KiB
C
91 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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.owner = THIS_MODULE,
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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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MODULE_ALIAS("i2c:cyttsp");
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