| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 | struct mutex mutex; /* start/stop/open/close */ |
| 97 | spinlock_t lock; /* fifo spinlock */ |
| 98 | unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */ |
| 99 | struct timer_list io_retry; /* Retry timer */ |
| 100 | unsigned long stop_retry; /* Time to give up, in jiffies */ |
| 101 | unsigned int retry_delay; /* Delay length in ms */ |
| 102 | struct work_struct reset_work; /* Task context for resets */ |
| 103 | wait_queue_head_t wait; /* For sleeping */ |
| 104 | }; |
| 105 | |
| 106 | #define hid_to_usb_dev(hid_dev) \ |
| 107 | to_usb_device(hid_dev->dev.parent->parent) |
| 108 | |
| 109 | #endif |
| 110 | |