linux/drivers/input/touchscreen/wacom_i2c.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Wacom Penabled Driver for I2C
 *
 * Copyright (c) 2011 - 2013 Tatsunosuke Tobita, Wacom.
 * <[email protected]>
 */

#include <linux/bits.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/unaligned.h>

/* Bitmasks (for data[3]) */
#define WACOM_TIP_SWITCH …
#define WACOM_BARREL_SWITCH …
#define WACOM_ERASER …
#define WACOM_INVERT …
#define WACOM_BARREL_SWITCH_2 …
#define WACOM_IN_PROXIMITY …

/* Registers */
#define WACOM_COMMAND_LSB …
#define WACOM_COMMAND_MSB …

#define WACOM_DATA_LSB …
#define WACOM_DATA_MSB …

/* Report types */
#define REPORT_FEATURE …

/* Requests / operations */
#define OPCODE_GET_REPORT …

#define WACOM_QUERY_REPORT …
#define WACOM_QUERY_SIZE …

struct wacom_features { … };

struct wacom_i2c { … };

static int wacom_query_device(struct i2c_client *client,
			      struct wacom_features *features)
{ … }

static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
{ … }

static int wacom_i2c_open(struct input_dev *dev)
{ … }

static void wacom_i2c_close(struct input_dev *dev)
{ … }

static int wacom_i2c_probe(struct i2c_client *client)
{ … }

static int wacom_i2c_suspend(struct device *dev)
{ … }

static int wacom_i2c_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(wacom_i2c_pm, wacom_i2c_suspend, wacom_i2c_resume);

static const struct i2c_device_id wacom_i2c_id[] = …;
MODULE_DEVICE_TABLE(i2c, wacom_i2c_id);

static struct i2c_driver wacom_i2c_driver = …;
module_i2c_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;