1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * This file holds the definitions of quirks found in USB devices. 4 * Only quirks that affect the whole device, not an interface, 5 * belong here. 6 */ 7 8 #ifndef __LINUX_USB_QUIRKS_H 9 #define __LINUX_USB_QUIRKS_H 10 11 /* string descriptors must not be fetched using a 255-byte read */ 12 #define USB_QUIRK_STRING_FETCH_255 BIT(0) 13 14 /* device can't resume correctly so reset it instead */ 15 #define USB_QUIRK_RESET_RESUME BIT(1) 16 17 /* device can't handle Set-Interface requests */ 18 #define USB_QUIRK_NO_SET_INTF BIT(2) 19 20 /* device can't handle its Configuration or Interface strings */ 21 #define USB_QUIRK_CONFIG_INTF_STRINGS BIT(3) 22 23 /* device can't be reset(e.g morph devices), don't use reset */ 24 #define USB_QUIRK_RESET BIT(4) 25 26 /* device has more interface descriptions than the bNumInterfaces count, 27 and can't handle talking to these interfaces */ 28 #define USB_QUIRK_HONOR_BNUMINTERFACES BIT(5) 29 30 /* device needs a pause during initialization, after we read the device 31 descriptor */ 32 #define USB_QUIRK_DELAY_INIT BIT(6) 33 34 /* 35 * For high speed and super speed interrupt endpoints, the USB 2.0 and 36 * USB 3.0 spec require the interval in microframes 37 * (1 microframe = 125 microseconds) to be calculated as 38 * interval = 2 ^ (bInterval-1). 39 * 40 * Devices with this quirk report their bInterval as the result of this 41 * calculation instead of the exponent variable used in the calculation. 42 */ 43 #define USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL BIT(7) 44 45 /* device can't handle device_qualifier descriptor requests */ 46 #define USB_QUIRK_DEVICE_QUALIFIER BIT(8) 47 48 /* device generates spurious wakeup, ignore remote wakeup capability */ 49 #define USB_QUIRK_IGNORE_REMOTE_WAKEUP BIT(9) 50 51 /* device can't handle Link Power Management */ 52 #define USB_QUIRK_NO_LPM BIT(10) 53 54 /* 55 * Device reports its bInterval as linear frames instead of the 56 * USB 2.0 calculation. 57 */ 58 #define USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL BIT(11) 59 60 /* 61 * Device needs to be disconnected before suspend to prevent spurious 62 * wakeup. 63 */ 64 #define USB_QUIRK_DISCONNECT_SUSPEND BIT(12) 65 66 /* Device needs a pause after every control message. */ 67 #define USB_QUIRK_DELAY_CTRL_MSG BIT(13) 68 69 /* Hub needs extra delay after resetting its port. */ 70 #define USB_QUIRK_HUB_SLOW_RESET BIT(14) 71 72 /* device has endpoints that should be ignored */ 73 #define USB_QUIRK_ENDPOINT_IGNORE BIT(15) 74 75 #endif /* __LINUX_USB_QUIRKS_H */ 76