text: // SPDX-License-Identifier: GPL-2.0-only
  /*
   * cyttsp_i2c.c
   * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
   * For use with Cypress Txx3xx parts.
   * Supported parts include:
   * CY8CTST341
   * CY8CTMA340
   *
   * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
   * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
   *
   * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
   */
  
  #include "cyttsp_core.h"
  
  #include <linux/i2c.h>
  #include <linux/input.h>
  
  #define CY_I2C_DATA_SIZE	128
  
  static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
  	.bustype	= BUS_I2C,
  	.write		= cyttsp_i2c_write_block_data,
  	.read           = cyttsp_i2c_read_block_data,
  };
  
  static int cyttsp_i2c_probe(struct i2c_client *client,
  				      const struct i2c_device_id *id)
  {
  	struct cyttsp *ts;
  
  	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
  		dev_err(&client->dev, "I2C functionality not Supported\n");
  		return -EIO;
  	}
  
  	ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
  			  CY_I2C_DATA_SIZE);
  
  	if (IS_ERR(ts))
  		return PTR_ERR(ts);
  
  	i2c_set_clientdata(client, ts);
  	return 0;
  }
  
  static const struct i2c_device_id cyttsp_i2c_id[] = {
  	{ CY_I2C_NAME, 0 },
  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
  
  static struct i2c_driver cyttsp_i2c_driver = {
  	.driver = {
  		.name	= CY_I2C_NAME,
  		.pm	= &cyttsp_pm_ops,
  	},
  	.probe		= cyttsp_i2c_probe,
  	.id_table	= cyttsp_i2c_id,
  };
  
  module_i2c_driver(cyttsp_i2c_driver);
  
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
  MODULE_AUTHOR("Cypress");
  