include/linux/usb/quirks.h

   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 /* device can't handle device_qualifier descriptor requests */
  45 #define USB_QUIRK_DEVICE_QUALIFIER      0x00000100
  46
  47 #endif /* __LINUX_USB_QUIRKS_H */