blob: 1fb088239d12b9f4a5a849a2ce662343743c8bd9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/*
* 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 */
|
