LXR linux/include/linux/platform

   1/*
   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
  17struct regulator;
  18
  19/**
  20 * struct i2chid_platform_data - used by hid over i2c implementation.
  21 * @hid_descriptor_address: i2c register where the HID descriptor is stored.
  22 * @supply: regulator for powering on the device.
  23 * @post_power_delay_ms: delay after powering on before device is usable.
  24 *
  25 * Note that it is the responsibility of the platform driver (or the acpi 5.0
  26 * driver, or the flattened device tree) to setup the irq related to the gpio in
  27 * the struct i2c_board_info.
  28 * The platform driver should also setup the gpio according to the device:
  29 *
  30 * A typical example is the following:
  31 *      irq = gpio_to_irq(intr_gpio);
  32 *      hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info
  33 *      gpio_request(intr_gpio, "elan-irq");
  34 *      s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP);
  35 */
  36struct i2c_hid_platform_data {
  37        u16 hid_descriptor_address;
  38        struct regulator *supply;
  39        int post_power_delay_ms;
  40};
  41
  42#endif /* __LINUX_I2C_HID_H */
  43