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97 lines
3.7 KiB
97 lines
3.7 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef __USBHID_H |
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#define __USBHID_H |
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/* |
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* Copyright (c) 1999 Andreas Gal |
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* Copyright (c) 2000-2001 Vojtech Pavlik |
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* Copyright (c) 2006 Jiri Kosina |
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*/ |
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/* |
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*/ |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/list.h> |
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#include <linux/mutex.h> |
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#include <linux/timer.h> |
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#include <linux/wait.h> |
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#include <linux/workqueue.h> |
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#include <linux/input.h> |
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/* API provided by hid-core.c for USB HID drivers */ |
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void usbhid_init_reports(struct hid_device *hid); |
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struct usb_interface *usbhid_find_interface(int minor); |
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/* iofl flags */ |
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#define HID_CTRL_RUNNING 1 |
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#define HID_OUT_RUNNING 2 |
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#define HID_IN_RUNNING 3 |
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#define HID_RESET_PENDING 4 |
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#define HID_SUSPENDED 5 |
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#define HID_CLEAR_HALT 6 |
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#define HID_DISCONNECTED 7 |
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#define HID_STARTED 8 |
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#define HID_KEYS_PRESSED 10 |
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#define HID_NO_BANDWIDTH 11 |
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#define HID_RESUME_RUNNING 12 |
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/* |
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* The device is opened, meaning there is a client that is interested |
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* in data coming from the device. |
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*/ |
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#define HID_OPENED 13 |
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/* |
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* We are polling input endpoint by [re]submitting IN URB, because |
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* either HID device is opened or ALWAYS POLL quirk is set for the |
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* device. |
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*/ |
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#define HID_IN_POLLING 14 |
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/* |
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* USB-specific HID struct, to be pointed to |
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* from struct hid_device->driver_data |
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*/ |
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struct usbhid_device { |
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struct hid_device *hid; /* pointer to corresponding HID dev */ |
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struct usb_interface *intf; /* USB interface */ |
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int ifnum; /* USB interface number */ |
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unsigned int bufsize; /* URB buffer size */ |
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struct urb *urbin; /* Input URB */ |
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char *inbuf; /* Input buffer */ |
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dma_addr_t inbuf_dma; /* Input buffer dma */ |
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struct urb *urbctrl; /* Control URB */ |
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struct usb_ctrlrequest *cr; /* Control request struct */ |
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struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */ |
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unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */ |
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char *ctrlbuf; /* Control buffer */ |
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dma_addr_t ctrlbuf_dma; /* Control buffer dma */ |
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unsigned long last_ctrl; /* record of last output for timeouts */ |
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struct urb *urbout; /* Output URB */ |
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struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */ |
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unsigned char outhead, outtail; /* Output pipe fifo head & tail */ |
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char *outbuf; /* Output buffer */ |
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dma_addr_t outbuf_dma; /* Output buffer dma */ |
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unsigned long last_out; /* record of last output for timeouts */ |
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struct mutex mutex; /* start/stop/open/close */ |
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spinlock_t lock; /* fifo spinlock */ |
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unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */ |
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struct timer_list io_retry; /* Retry timer */ |
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unsigned long stop_retry; /* Time to give up, in jiffies */ |
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unsigned int retry_delay; /* Delay length in ms */ |
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struct work_struct reset_work; /* Task context for resets */ |
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wait_queue_head_t wait; /* For sleeping */ |
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}; |
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#define hid_to_usb_dev(hid_dev) \ |
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to_usb_device(hid_dev->dev.parent->parent) |
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#endif |
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