1 /*****************************************************************************
2 * File: drivers/usb/misc/vstusb.h
4 * Purpose: Support for the bulk USB Vernier Spectrophotometers
6 * Author: EQware Engineering, Inc.
7 * Oregon City, OR, USA 97045
9 * Copyright: 2007, 2008
10 * Vernier Software & Technology
11 * Beaverton, OR, USA 97005
13 * Web: www.vernier.com
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License version 2 as
17 * published by the Free Software Foundation.
19 *****************************************************************************/
20 /*****************************************************************************
22 * The vstusb module is a standard usb 'client' driver running on top of the
23 * standard usb host controller stack.
25 * In general, vstusb supports standard bulk usb pipes. It supports multiple
26 * devices and multiple pipes per device.
28 * The vstusb driver supports two interfaces:
29 * 1 - ioctl SEND_PIPE/RECV_PIPE - a general bulk write/read msg
30 * interface to any pipe with timeout support;
31 * 2 - standard read/write with ioctl config - offers standard read/write
32 * interface with ioctl configured pipes and timeouts.
34 * Both interfaces can be signal from other process and will abort its i/o
37 * A timeout of 0 means NO timeout. The user can still terminate the read via
40 * If using multiple threads with this driver, the user should ensure that
41 * any reads, writes, or ioctls are complete before closing the device.
42 * Changing read/write timeouts or pipes takes effect on next read/write.
44 *****************************************************************************/
48 /* this struct is used for IOCTL_VSTUSB_SEND_PIPE, *
49 * IOCTL_VSTUSB_RECV_PIPE, and read()/write() fops */
53 unsigned int timeout_ms;
57 /* this one is used for IOCTL_VSTUSB_CONFIG_RW */
67 #define VST_IOC_MAGIC 'L'
68 #define VST_IOC_FIRST 0x20
69 #define IOCTL_VSTUSB_SEND_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST)
70 #define IOCTL_VSTUSB_RECV_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 1)
71 #define IOCTL_VSTUSB_CONFIG_RW _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 2)