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Benjamin Tissoires4a200c32012-11-12 15:42:59 +01001/*
2 * HID over I2C protocol implementation
3 *
4 * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
5 * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file COPYING in the main directory of this archive for
9 * more details.
10 */
11
12#ifndef __LINUX_I2C_HID_H
13#define __LINUX_I2C_HID_H
14
15#include <linux/types.h>
16
17/**
18 * struct i2chid_platform_data - used by hid over i2c implementation.
19 * @hid_descriptor_address: i2c register where the HID descriptor is stored.
20 *
21 * Note that it is the responsibility of the platform driver (or the acpi 5.0
Benjamin Tissoires3d7d2482013-06-13 09:50:35 +020022 * driver, or the flattened device tree) to setup the irq related to the gpio in
23 * the struct i2c_board_info.
Benjamin Tissoires4a200c32012-11-12 15:42:59 +010024 * The platform driver should also setup the gpio according to the device:
25 *
26 * A typical example is the following:
27 * irq = gpio_to_irq(intr_gpio);
28 * hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info
29 * gpio_request(intr_gpio, "elan-irq");
30 * s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP);
31 */
32struct i2c_hid_platform_data {
33 u16 hid_descriptor_address;
34};
35
36#endif /* __LINUX_I2C_HID_H */