The Get Status value for USB 3.0 devices adds three new status bits.
Bits 2 and 3 indicate if U1 and U2 are enabled, and bit 4 indicates if
Latency Tolerance Messaging (LTM) is enabled.
Upcoming patches for the Linux kernel will enable LTM, so lsusb should
be changed to show whether LTM is enabled for a device.
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
lsusb.c | 14 +++++++++++---
1 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/lsusb.c b/lsusb.c
index 1e2957e..738d65a 100644
--- a/lsusb.c
+++ b/lsusb.c
@@ -3435,7 +3435,7 @@ static int do_otg(struct libusb_config_descriptor *config)
}
static void
-dump_device_status(libusb_device_handle *fd, int otg, int wireless)
+dump_device_status(libusb_device_handle *fd, int otg, int wireless, int super_speed)
{
unsigned char status[8];
int ret;
@@ -3461,7 +3461,7 @@ dump_device_status(libusb_device_handle *fd, int otg, int wireless)
printf(" (Bus Powered)\n");
if (status[0] & (1 << 1))
printf(" Remote Wakeup Enabled\n");
- if (status[0] & (1 << 2)) {
+ if (status[0] & (1 << 2) && !super_speed) {
/* for high speed devices */
if (!wireless)
printf(" Test Mode\n");
@@ -3469,6 +3469,14 @@ dump_device_status(libusb_device_handle *fd, int otg, int wireless)
else
printf(" Battery Powered\n");
}
+ if (super_speed) {
+ if (status[0] & (1 << 2))
+ printf(" U1 Enabled\n");
+ if (status[0] & (1 << 3))
+ printf(" U2 Enabled\n");
+ if (status[0] & (1 << 4))
+ printf(" Latency Tolerance Messaging (LTM) Enabled\n");
+ }
/* if both HOST and DEVICE support OTG */
if (otg) {
if (status[0] & (1 << 3))
@@ -3796,7 +3804,7 @@ static void dumpdev(libusb_device *dev)
do_dualspeed(udev);
}
do_debug(udev);
- dump_device_status(udev, otg, wireless);
+ dump_device_status(udev, otg, wireless, desc.bcdUSB >= 0x0300);
libusb_close(udev);
}
--
1.7.9
--
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