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 */ 37 void usbhid_init_reports(struct hid_device *hid); 38 struct usb_interface *usbhid_find_interface(int minor); 39 40 /* iofl flags */ 41 #define HID_CTRL_RUNNING 1 42 #define HID_OUT_RUNNING 2 43 #define HID_IN_RUNNING 3 44 #define HID_RESET_PENDING 4 45 #define HID_SUSPENDED 5 46 #define HID_CLEAR_HALT 6 47 #define HID_DISCONNECTED 7 48 #define HID_STARTED 8 49 #define HID_KEYS_PRESSED 10 50 #define HID_NO_BANDWIDTH 11 51 #define HID_RESUME_RUNNING 12 52 /* 53 * The device is opened, meaning there is a client that is interested 54 * in data coming from the device. 55 */ 56 #define HID_OPENED 13 57 /* 58 * We are polling input endpoint by [re]submitting IN URB, because 59 * either HID device is opened or ALWAYS POLL quirk is set for the 60 * device. 61 */ 62 #define HID_IN_POLLING 14 63 64 /* 65 * USB-specific HID struct, to be pointed to 66 * from struct hid_device->driver_data 67 */ 68 69 struct usbhid_device { 70 struct hid_device *hid; /* pointer to corresponding HID dev */ 71 72 struct usb_interface *intf; /* USB interface */ 73 int ifnum; /* USB interface number */ 74 75 unsigned int bufsize; /* URB buffer size */ 76 77 struct urb *urbin; /* Input URB */ 78 char *inbuf; /* Input buffer */ 79 dma_addr_t inbuf_dma; /* Input buffer dma */ 80 81 struct urb *urbctrl; /* Control URB */ 82 struct usb_ctrlrequest *cr; /* Control request struct */ 83 struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */ 84 unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */ 85 char *ctrlbuf; /* Control buffer */ 86 dma_addr_t ctrlbuf_dma; /* Control buffer dma */ 87 unsigned long last_ctrl; /* record of last output for timeouts */ 88 89 struct urb *urbout; /* Output URB */ 90 struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */ 91 unsigned char outhead, outtail; /* Output pipe fifo head & tail */ 92 char *outbuf; /* Output buffer */ 93 dma_addr_t outbuf_dma; /* Output buffer dma */ 94 unsigned long last_out; /* record of last output for timeouts */ 95 96 spinlock_t lock; /* fifo spinlock */ 97 unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */ 98 struct timer_list io_retry; /* Retry timer */ 99 unsigned long stop_retry; /* Time to give up, in jiffies */ 100 unsigned int retry_delay; /* Delay length in ms */ 101 struct work_struct reset_work; /* Task context for resets */ 102 wait_queue_head_t wait; /* For sleeping */ 103 }; 104 105 #define hid_to_usb_dev(hid_dev) \ 106 to_usb_device(hid_dev->dev.parent->parent) 107 108 #endif 109 110