43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/*
|
|
* HID over I2C protocol implementation
|
|
*
|
|
* Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
|
|
* Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
#ifndef __LINUX_I2C_HID_H
|
|
#define __LINUX_I2C_HID_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct regulator;
|
|
|
|
/**
|
|
* struct i2chid_platform_data - used by hid over i2c implementation.
|
|
* @hid_descriptor_address: i2c register where the HID descriptor is stored.
|
|
* @supply: regulator for powering on the device.
|
|
* @post_power_delay_ms: delay after powering on before device is usable.
|
|
*
|
|
* Note that it is the responsibility of the platform driver (or the acpi 5.0
|
|
* driver, or the flattened device tree) to setup the irq related to the gpio in
|
|
* the struct i2c_board_info.
|
|
* The platform driver should also setup the gpio according to the device:
|
|
*
|
|
* A typical example is the following:
|
|
* irq = gpio_to_irq(intr_gpio);
|
|
* hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info
|
|
* gpio_request(intr_gpio, "elan-irq");
|
|
* s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP);
|
|
*/
|
|
struct i2c_hid_platform_data {
|
|
u16 hid_descriptor_address;
|
|
struct regulator *supply;
|
|
int post_power_delay_ms;
|
|
};
|
|
|
|
#endif /* __LINUX_I2C_HID_H */
|