On Mon, Jun 13, 2016 at 4:04 PM, Caleb Crome <caleb@xxxxxxxxx> wrote: > On Mon, Jun 13, 2016 at 2:53 AM, Peter Chen <hzpeterchen@xxxxxxxxx> wrote: >> On Wed, Jun 08, 2016 at 04:11:11PM -0700, Caleb Crome wrote: >>> >>> Here is the script I use for starting the gadget interface: >>> >>> cd /sys/kernel/config/usb_gadget >>> mkdir g1 >>> cd g1 >>> echo "0x1d6b" > idVendor >>> echo "0x0104" > idProduct >>> mkdir strings/0x409 >>> echo "0123456789" > strings/0x409/serialnumber >>> echo "Foo Inc." > strings/0x409/manufacturer >>> echo "Bar Gadget" > strings/0x409/product >>> mkdir functions/uac2.aud0 >>> mkdir functions/ecm.usb0 >>> #echo 64000 > functions/uac2.aud0/c_srate >>> #echo 64000 > functions/uac2.aud0/p_srate >>> mkdir configs/c.1 >>> mkdir configs/c.1/strings/0x409 >>> echo "CDC ECM + audio" > configs/c.1/strings/0x409/configuration >>> ln -s functions/uac2.aud0 configs/c.1 >>> ln -s functions/ecm.usb0 configs/c.1 >>> echo `ls /sys/class/udc/` > /sys/kernel/config/usb_gadget/g1/UDC >>> >> >> Try to use below command to see if it works, it works at my i.mx6 board. >> >> 1. **** List of PLAYBACK Hardware Devices **** >> root@imx6sxsabresd:~# aplay -l >> **** List of PLAYBACK Hardware Devices **** >> card 0: wm8962audio [wm8962-audio], device 0: HiFi wm8962-0 [] >> Subdevices: 1/1 >> Subdevice #0: subdevice #0 >> card 1: imxspdif [imx-spdif], device 0: S/PDIF PCM Playback dit-hifi-0 [] >> Subdevices: 1/1 >> Subdevice #0: subdevice #0 >> card 2: UAC2Gadget [UAC2_Gadget], device 0: UAC2 PCM [UAC2 PCM] >> Subdevices: 1/1 >> Subdevice #0: subdevice #0 >> 2. **** List of CAPTURE Hardware Devices **** >> root@imx6sxsabresd:~# arecord -l >> **** List of CAPTURE Hardware Devices **** >> card 0: wm8962audio [wm8962-audio], device 0: HiFi wm8962-0 [] >> Subdevices: 1/1 >> Subdevice #0: subdevice #0 >> card 2: UAC2Gadget [UAC2_Gadget], device 0: UAC2 PCM [UAC2 PCM] >> Subdevices: 1/1 >> Subdevice #0: subdevice #0 >> 3. Using below command to play (it is playback, the audio file is from >> PC) >> root@imx6sxsabresd:~# arecord -f dat -t wav -D hw:2,0 | aplay -D hw:0,0 & >> >> NOTE: arecord uses uac2_gadget to record, aplay uses real codec to play >> > > Great to hear that it works on your board, that gives me hope :-) > > 2 questions: > 1) What kernel version do you use? > 2) What are the commands you send to configfs to get it working? Does > it look like mine? > > The command you suggest > # arecord -f dat -t wav -D hw:2,0 > > does not work for me: again, I get an error message: > > # arecord: pcm_read:2031: read error: Input/output error > > >>> >>> When I run the script above I get the following dumped into /var/log/syslog: >>> Jun 8 23:08:14 wandboard kernel: [ 139.994081] using random self >>> ethernet address >>> Jun 8 23:08:14 wandboard kernel: [ 139.994107] using random host >>> ethernet address >>> Jun 8 23:08:14 wandboard NetworkManager[359]: >>> nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed >>> Jun 8 23:08:14 wandboard NetworkManager[359]: <info> (usb0): new >>> Generic device (carrier: OFF, driver: 'g_ether', ifindex: 4) >>> Jun 8 23:08:14 wandboard kernel: [ 140.125255] usb0: HOST MAC >>> 3e:52:2d:0d:98:fe >>> Jun 8 23:08:14 wandboard kernel: [ 140.153803] usb0: MAC 0e:cf:aa:06:aa:8a >>> Jun 8 23:08:14 wandboard systemd-udevd[773]: Failed to apply ACL on >>> /dev/snd/controlC3: Operation not supported >>> Jun 8 23:08:14 wandboard systemd-udevd[776]: Failed to apply ACL on >>> /dev/snd/pcmC3D0c: Operation not supported >>> Jun 8 23:08:14 wandboard systemd-udevd[775]: Failed to apply ACL on >>> /dev/snd/pcmC3D0p: Operation not supported >>> Jun 8 23:08:14 wandboard systemd-udevd[773]: Process >>> '/usr/sbin/alsactl -E HOME=/var/run/alsa restore 3' failed with exit >>> code 99. >>> Jun 8 23:08:14 wandboard NetworkManager[359]: <info> devices added >>> (path: /sys/devices/soc0/soc/2100000.aips-bus/2184000.usb/ci_hdrc.0/gadget/net/usb0, >>> iface: usb0) >>> Jun 8 23:08:14 wandboard NetworkManager[359]: <info> device added >>> (path: /sys/devices/soc0/soc/2100000.aips-bus/2184000.usb/ci_hdrc.0/gadget/net/usb0, >>> iface: usb0): no ifupdown configuration found. >>> >>> >>> Any idea what could be wrong?Is the 'Failed to apply ACL' relavent? >> >> Sorry, I don't know what that mean, do that mean there is something >> wrong with your local codec? > > No, I'm not trying to use a local codec at all. I'm trying to capture > to a .wav file. I'm just getting the above messages that look like > this: > >>> Jun 8 23:08:14 wandboard systemd-udevd[773]: Failed to apply ACL on >>> /dev/snd/controlC3: Operation not supported > > Any idea why that is? It's the UAC2 audio device. Do you get that > message in your syslog? Ah, I found that setting CONFIG_TMPFS_POSIX_ACL in the kernel config fixed the ACL problem, but did nothing for my input/output error. I still get arecord: pcm_read:2031: read error: Input/output error -Caleb -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
