u0_a71@android:/ $ su
root@android:/ # insmod /system/lib/modules/snd-hwdep.ko
root@android:/ # insmod /system/lib/modules/snd-rawmidi.ko
root@android:/ # insmod /system/lib/modules/snd-usbmidi-lib.ko
root@android:/ # insmod /system/lib/modules/snd-usb-audio.ko
root@android:/ # ls dev/snd
controlC0
controlC1
controlC2
pcmC0D0c
pcmC0D0p
pcmC1D0p
pcmC2D0c
pcmC2D0p
timer
root@android:/ # cat /proc/asound/cards
 0 [RK29WM8731     ]: RK29_WM8731 - RK29_WM8731
                      RK29_WM8731
 1 [RKHDMII2S      ]: RK-HDMI-I2S - RK-HDMI-I2S
                      RK-HDMI-I2S
 2 [Headset        ]: USB-Audio - Plantronics Headset
                      Plantronics Plantronics Headset at usb-usb20_host-1.3, full speed
root@android:/ #