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Diffstat (limited to 'payloads/libpayload/drivers/usb/usb.c')
| -rw-r--r-- | payloads/libpayload/drivers/usb/usb.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/usb.c b/payloads/libpayload/drivers/usb/usb.c index e87e397061..bfb697d619 100644 --- a/payloads/libpayload/drivers/usb/usb.c +++ b/payloads/libpayload/drivers/usb/usb.c @@ -275,6 +275,20 @@ usb_decode_mps0(usb_speed speed, u8 bMaxPacketSize0) } } +int speed_to_default_mps(usb_speed speed) +{ + switch (speed) { + case LOW_SPEED: + return 8; + case FULL_SPEED: + case HIGH_SPEED: + return 64; + case SUPER_SPEED: + default: + return 512; + } +} + /* Normalize bInterval to log2 of microframes */ static int usb_decode_interval(usb_speed speed, const endpoint_type type, const unsigned char bInterval) |