2 * HID over I2C protocol implementation
5 * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
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
12 #ifndef __LINUX_I2C_HID_H
13 #define __LINUX_I2C_HID_H
15 #include <linux/regulator/consumer.h>
16 #include <linux/types.h>
19 * struct i2chid_platform_data - used by hid over i2c implementation.
20 * @hid_descriptor_address: i2c register where the HID descriptor is stored.
21 * @supplies: regulators for powering on the device.
22 * @post_power_delay_ms: delay after powering on before device is usable.
24 * Note that it is the responsibility of the platform driver (or the acpi 5.0
25 * driver, or the flattened device tree) to setup the irq related to the gpio in
26 * the struct i2c_board_info.
27 * The platform driver should also setup the gpio according to the device:
29 * A typical example is the following:
30 * irq = gpio_to_irq(intr_gpio);
31 * hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info
32 * gpio_request(intr_gpio, "elan-irq");
33 * s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP);
35 struct i2c_hid_platform_data {
36 u16 hid_descriptor_address;
37 struct regulator_bulk_data supplies[2];
38 int post_power_delay_ms;
41 #endif /* __LINUX_I2C_HID_H */