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/timer.h> 31 #include <linux/wait.h> 32 #include <linux/workqueue.h> 33 #include <linux/input.h> 34 35 /* API provided by hid-core.c for USB HID drivers */ 36 int usbhid_wait_io(struct hid_device* hid); 37 void usbhid_close(struct hid_device *hid); 38 int usbhid_open(struct hid_device *hid); 39 void usbhid_init_reports(struct hid_device *hid); 40 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir); 41 42 /* 43 * USB-specific HID struct, to be pointed to 44 * from struct hid_device->driver_data 45 */ 46 47 struct usbhid_device { 48 struct hid_device *hid; /* pointer to corresponding HID dev */ 49 50 struct usb_interface *intf; /* USB interface */ 51 int ifnum; /* USB interface number */ 52 53 unsigned int bufsize; /* URB buffer size */ 54 55 struct urb *urbin; /* Input URB */ 56 char *inbuf; /* Input buffer */ 57 dma_addr_t inbuf_dma; /* Input buffer dma */ 58 spinlock_t inlock; /* Input fifo spinlock */ 59 60 struct urb *urbctrl; /* Control URB */ 61 struct usb_ctrlrequest *cr; /* Control request struct */ 62 dma_addr_t cr_dma; /* Control request struct dma */ 63 struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */ 64 unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */ 65 char *ctrlbuf; /* Control buffer */ 66 dma_addr_t ctrlbuf_dma; /* Control buffer dma */ 67 spinlock_t ctrllock; /* Control fifo spinlock */ 68 69 struct urb *urbout; /* Output URB */ 70 struct hid_report *out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */ 71 unsigned char outhead, outtail; /* Output pipe fifo head & tail */ 72 char *outbuf; /* Output buffer */ 73 dma_addr_t outbuf_dma; /* Output buffer dma */ 74 spinlock_t outlock; /* Output fifo spinlock */ 75 76 unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */ 77 struct timer_list io_retry; /* Retry timer */ 78 unsigned long stop_retry; /* Time to give up, in jiffies */ 79 unsigned int retry_delay; /* Delay length in ms */ 80 struct work_struct reset_work; /* Task context for resets */ 81 wait_queue_head_t wait; /* For sleeping */ 82 }; 83 84 #define hid_to_usb_dev(hid_dev) \ 85 container_of(hid_dev->dev->parent, struct usb_device, dev) 86 87 #endif 88 89