tjh.dev
Linux kernel mirror (for testing)
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linux
1/*
2 * This file holds the definitions of quirks found in USB devices.
3 * Only quirks that affect the whole device, not an interface,
4 * belong here.
5 */
6
7#ifndef __LINUX_USB_QUIRKS_H
8#define __LINUX_USB_QUIRKS_H
9
10/* string descriptors must not be fetched using a 255-byte read */
11#define USB_QUIRK_STRING_FETCH_255 0x00000001
12
13/* device can't resume correctly so reset it instead */
14#define USB_QUIRK_RESET_RESUME 0x00000002
15
16/* device can't handle Set-Interface requests */
17#define USB_QUIRK_NO_SET_INTF 0x00000004
18
19/* device can't handle its Configuration or Interface strings */
20#define USB_QUIRK_CONFIG_INTF_STRINGS 0x00000008
21
22/* device can't be reset(e.g morph devices), don't use reset */
23#define USB_QUIRK_RESET 0x00000010
24
25/* device has more interface descriptions than the bNumInterfaces count,
26 and can't handle talking to these interfaces */
27#define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020
28
29/* device needs a pause during initialization, after we read the device
30 descriptor */
31#define USB_QUIRK_DELAY_INIT 0x00000040
32
33/*
34 * For high speed and super speed interupt endpoints, the USB 2.0 and
35 * USB 3.0 spec require the interval in microframes
36 * (1 microframe = 125 microseconds) to be calculated as
37 * interval = 2 ^ (bInterval-1).
38 *
39 * Devices with this quirk report their bInterval as the result of this
40 * calculation instead of the exponent variable used in the calculation.
41 */
42#define USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL 0x00000080
43
44#endif /* __LINUX_USB_QUIRKS_H */