Oliver Neukum <oneukum@xxxxxxx> writes:
> On Wednesday 03 July 2013 14:08:00 Bjørn Mork wrote:
>> But this just does not seem right? Any modern USB device is supposed to
>> support autosuspend, right? I am using the firmware patch included in
>
> What should be and what is may be different although it oughn't be.
>
>> the latest public firmware repo:
>
> Does the device respond to standard request, that is what does lsusb do?
Yes, it does. Standard USB requests seems to wake the device. Running
"lsusb -vd 8087:07dc" from suspended state works fine for example:
nemi:/tmp# grep . /sys/bus/usb/devices/7-1/power/runtime_status; lsusb -vd 8087:07dc >/dev/null ; grep . /sys/bus/usb/devices/7-1/power/runtime_status
suspended
active
usbmon trace of this:
nemi:/tmp# cat /sys/kernel/debug/usb/usbmon/7t
ffff88021ae42680 3655354231 S Ci:001:00 s a3 00 0000 0001 0004 4 <
ffff88021ae42680 3655354476 C Ci:001:00 0 4 = 07010000
ffff88021ae42680 3655354683 S Ci:001:00 s a3 00 0000 0002 0004 4 <
ffff88021ae42680 3655354825 C Ci:001:00 0 4 = 00010000
ffff8802300c1680 3655354960 S Ii:001:01 -115 2 <
ffff88021ae42680 3655355508 S Ci:001:00 s a3 00 0000 0001 0004 4 <
ffff88021ae42680 3655355903 C Ci:001:00 0 4 = 07010000
ffff88021ae42680 3655356070 S Co:001:00 s 23 01 0002 0001 0000 0
ffff88021ae42680 3655356248 C Co:001:00 0 0
ffff88022cac6ec0 3655386101 S Ci:001:00 s a3 00 0000 0001 0004 4 <
ffff88022cac6ec0 3655386152 C Ci:001:00 0 4 = 03010400
ffff88021ae42680 3655402102 S Co:001:00 s 23 01 0012 0001 0000 0
ffff88021ae42680 3655402133 C Co:001:00 0 0
ffff88021ae42680 3655402178 S Ci:002:00 s 80 00 0000 0000 0002 2 <
ffff88021ae42680 3655404198 C Ci:002:00 0 2 = 0300
ffff88021ae42680 3655404311 S Co:002:00 s 00 01 0001 0000 0000 0
ffff88021ae42680 3655405219 C Co:002:00 0 0
ffff88021ae42680 3655405422 S Ii:002:01 -115 64 <
ffff88022cac6ec0 3655405459 S Bi:002:02 -115 1028 <
ffff88022cac6e00 3655405510 S Bi:002:02 -115 1028 <
ffff88022cac6d40 3655407116 S Ci:002:00 s 80 06 0600 0000 000a 10 <
ffff88022cac6c80 3655407277 S Co:002:00 s 01 0b 0000 0001 0000 0
ffff88022cac6d40 3655408225 C Ci:002:00 -32 0
ffff88022cac6d40 3655408514 S Ci:002:00 s 80 06 0a00 0000 0004 4 <
ffff88022cac6c80 3655409220 C Co:002:00 0 0
ffff88022cac6d40 3655409258 C Ci:002:00 0 0
ffff88022cac6d40 3655409528 S Ci:002:00 s 80 00 0000 0000 0002 2 <
ffff88022cac6d40 3655410194 C Ci:002:00 0 2 = 0100
And then when suspending:
ffff88021ae42680 3657411219 C Ii:002:01 -2 0
ffff88021ae42680 3657411253 S Ii:002:01 -115 64 <
ffff88021ae42680 3657411298 E Ii:002:01 -1 0
ffff88022cac6e00 3657412234 C Bi:002:02 -2 0
ffff88022cac6e00 3657412261 S Bi:002:02 -115 1028 <
ffff88022cac6e00 3657412280 E Bi:002:02 -1 0
ffff88022cac6ec0 3657413234 C Bi:002:02 -2 0
ffff88022cac6ec0 3657413261 S Bi:002:02 -115 1028 <
ffff88022cac6ec0 3657413281 E Bi:002:02 -1 0
ffff88022cac6ec0 3657413557 S Co:002:00 s 00 03 0001 0000 0000 0
ffff88022cac6ec0 3657414209 C Co:002:00 0 0
ffff88022cac6ec0 3657414531 S Co:001:00 s 23 03 0002 0001 0000 0
ffff88022cac6ec0 3657414565 C Co:001:00 0 0
ffff8802300c1680 3657430065 C Ii:001:01 -2 0
Ah, this is probably a timing issue. The HCI commands also wake the
device, but too late most of the time. This fails:
nemi:/tmp# grep . /sys/bus/usb/devices/7-1/power/runtime_status; hciconfig hci1 version ; grep . /sys/bus/usb/devices/7-1/power/runtime_status
suspended
Can't read version info hci1: Connection timed out (110)
active
But repeating the command makes the second attempt work:
nemi:/tmp# grep . /sys/bus/usb/devices/7-1/power/runtime_status; hciconfig hci1 version; hciconfig hci1 version ; grep . /sys/bus/usb/devices/7-1/power/runtime_status
suspended
Can't read version info hci1: Connection timed out (110)
hci1: Type: BR/EDR Bus: USB
BD Address: 0C:8B:FD:08:09:75 ACL MTU: 1021:5 SCO MTU: 96:5
HCI Version: 4.0 (0x6) Revision: 0x500
LMP Version: 4.0 (0x6) Subversion: 0x500
Manufacturer: Intel Corp. (2)
active
Bjørn
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