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 int usbhid_wait_io(struct hid_device* hid); 38 void usbhid_close(struct hid_device *hid); 39 int usbhid_open(struct hid_device *hid); 40 void usbhid_init_reports(struct hid_device *hid); 41 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir); 42 43 /* 44 * USB-specific HID struct, to be pointed to 45 * from struct hid_device->driver_data 46 */ 47 48 struct usbhid_device { 49 struct hid_device *hid; /* pointer to corresponding HID dev */ 50 51 struct usb_interface *intf; /* USB interface */ 52 int ifnum; /* USB interface number */ 53 54 unsigned int bufsize; /* URB buffer size */ 55 56 struct urb *urbin; /* Input URB */ 57 char *inbuf; /* Input buffer */ 58 dma_addr_t inbuf_dma; /* Input buffer dma */ 59 spinlock_t inlock; /* Input fifo spinlock */ 60 61 struct urb *urbctrl; /* Control URB */ 62 struct usb_ctrlrequest *cr; /* Control request struct */ 63 dma_addr_t cr_dma; /* Control request struct dma */ 64 struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */ 65 unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */ 66 char *ctrlbuf; /* Control buffer */ 67 dma_addr_t ctrlbuf_dma; /* Control buffer dma */ 68 spinlock_t ctrllock; /* Control fifo spinlock */ 69 70 struct urb *urbout; /* Output URB */ 71 struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */ 72 unsigned char outhead, outtail; /* Output pipe fifo head & tail */ 73 char *outbuf; /* Output buffer */ 74 dma_addr_t outbuf_dma; /* Output buffer dma */ 75 spinlock_t outlock; /* Output fifo spinlock */ 76 77 struct mutex setup; 78 unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */ 79 struct timer_list io_retry; /* Retry timer */ 80 unsigned long stop_retry; /* Time to give up, in jiffies */ 81 unsigned int retry_delay; /* Delay length in ms */ 82 struct work_struct reset_work; /* Task context for resets */ 83 wait_queue_head_t wait; /* For sleeping */ 84 }; 85 86 #define hid_to_usb_dev(hid_dev) \ 87 container_of(hid_dev->dev.parent->parent, struct usb_device, dev) 88 89 #endif 90 91