LXR linux/drivers/input/touchscreen/cyttsp4

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * cyttsp_i2c.c
   4 * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
   5 * For use with Cypress  Txx4xx parts.
   6 * Supported parts include:
   7 * TMA4XX
   8 * TMA1036
   9 *
  10 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
  11 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
  12 * Copyright (C) 2013 Cypress Semiconductor
  13 *
  14 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
  15 */
  16
  17#include "cyttsp4_core.h"
  18
  19#include <linux/i2c.h>
  20#include <linux/input.h>
  21
  22#define CYTTSP4_I2C_DATA_SIZE   (3 * 256)
  23
  24static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {
  25        .bustype        = BUS_I2C,
  26        .write          = cyttsp_i2c_write_block_data,
  27        .read           = cyttsp_i2c_read_block_data,
  28};
  29
  30static int cyttsp4_i2c_probe(struct i2c_client *client,
  31                                      const struct i2c_device_id *id)
  32{
  33        struct cyttsp4 *ts;
  34
  35        if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
  36                dev_err(&client->dev, "I2C functionality not Supported\n");
  37                return -EIO;
  38        }
  39
  40        ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,
  41                          CYTTSP4_I2C_DATA_SIZE);
  42
  43        return PTR_ERR_OR_ZERO(ts);
  44}
  45
  46static int cyttsp4_i2c_remove(struct i2c_client *client)
  47{
  48        struct cyttsp4 *ts = i2c_get_clientdata(client);
  49
  50        cyttsp4_remove(ts);
  51
  52        return 0;
  53}
  54
  55static const struct i2c_device_id cyttsp4_i2c_id[] = {
  56        { CYTTSP4_I2C_NAME, 0 },
  57        { }
  58};
  59MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
  60
  61static struct i2c_driver cyttsp4_i2c_driver = {
  62        .driver = {
  63                .name   = CYTTSP4_I2C_NAME,
  64                .pm     = &cyttsp4_pm_ops,
  65        },
  66        .probe          = cyttsp4_i2c_probe,
  67        .remove         = cyttsp4_i2c_remove,
  68        .id_table       = cyttsp4_i2c_id,
  69};
  70
  71module_i2c_driver(cyttsp4_i2c_driver);
  72
  73MODULE_LICENSE("GPL");
  74MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
  75MODULE_AUTHOR("Cypress");
  76