linux/drivers/hid/usbhid/usbhid.h
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   1#ifndef __USBHID_H
   2#define __USBHID_H
   3
   4/*
   5 *  Copyright (c) 1999 Andreas Gal
   6 *  Copyright (c) 2000-2001 Vojtech Pavlik
   7 *  Copyright (c) 2006 Jiri Kosina
   8 */
   9
  10/*
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License as published by
  13 * the Free Software Foundation; either version 2 of the License, or
  14 * (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  24 *
  25 */
  26
  27#include <linux/types.h>
  28#include <linux/slab.h>
  29#include <linux/list.h>
  30#include <linux/mutex.h>
  31#include <linux/timer.h>
  32#include <linux/wait.h>
  33#include <linux/workqueue.h>
  34#include <linux/input.h>
  35
  36/*  API provided by hid-core.c for USB HID drivers */
  37int usbhid_wait_io(struct hid_device* hid);
  38void usbhid_close(struct hid_device *hid);
  39int usbhid_open(struct hid_device *hid);
  40void usbhid_init_reports(struct hid_device *hid);
  41void usbhid_submit_report
  42(struct hid_device *hid, struct hid_report *report, unsigned char dir);
  43int usbhid_get_power(struct hid_device *hid);
  44void usbhid_put_power(struct hid_device *hid);
  45struct usb_interface *usbhid_find_interface(int minor);
  46
  47/* iofl flags */
  48#define HID_CTRL_RUNNING        1
  49#define HID_OUT_RUNNING         2
  50#define HID_IN_RUNNING          3
  51#define HID_RESET_PENDING       4
  52#define HID_SUSPENDED           5
  53#define HID_CLEAR_HALT          6
  54#define HID_DISCONNECTED        7
  55#define HID_STARTED             8
  56#define HID_REPORTED_IDLE       9
  57#define HID_KEYS_PRESSED        10
  58
  59/*
  60 * USB-specific HID struct, to be pointed to
  61 * from struct hid_device->driver_data
  62 */
  63
  64struct usbhid_device {
  65        struct hid_device *hid;                                         /* pointer to corresponding HID dev */
  66
  67        struct usb_interface *intf;                                     /* USB interface */
  68        int ifnum;                                                      /* USB interface number */
  69
  70        unsigned int bufsize;                                           /* URB buffer size */
  71
  72        struct urb *urbin;                                              /* Input URB */
  73        char *inbuf;                                                    /* Input buffer */
  74        dma_addr_t inbuf_dma;                                           /* Input buffer dma */
  75
  76        struct urb *urbctrl;                                            /* Control URB */
  77        struct usb_ctrlrequest *cr;                                     /* Control request struct */
  78        struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE];            /* Control fifo */
  79        unsigned char ctrlhead, ctrltail;                               /* Control fifo head & tail */
  80        char *ctrlbuf;                                                  /* Control buffer */
  81        dma_addr_t ctrlbuf_dma;                                         /* Control buffer dma */
  82        unsigned long last_ctrl;                                                /* record of last output for timeouts */
  83
  84        struct urb *urbout;                                             /* Output URB */
  85        struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE];              /* Output pipe fifo */
  86        unsigned char outhead, outtail;                                 /* Output pipe fifo head & tail */
  87        char *outbuf;                                                   /* Output buffer */
  88        dma_addr_t outbuf_dma;                                          /* Output buffer dma */
  89        unsigned long last_out;                                                 /* record of last output for timeouts */
  90
  91        spinlock_t lock;                                                /* fifo spinlock */
  92        unsigned long iofl;                                             /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
  93        struct timer_list io_retry;                                     /* Retry timer */
  94        unsigned long stop_retry;                                       /* Time to give up, in jiffies */
  95        unsigned int retry_delay;                                       /* Delay length in ms */
  96        struct work_struct reset_work;                                  /* Task context for resets */
  97        wait_queue_head_t wait;                                         /* For sleeping */
  98        int ledcount;                                                   /* counting the number of active leds */
  99
 100        struct work_struct led_work;                                    /* Task context for setting LEDs */
 101};
 102
 103#define hid_to_usb_dev(hid_dev) \
 104        container_of(hid_dev->dev.parent->parent, struct usb_device, dev)
 105
 106#endif
 107
 108