/sys/class/sound/card0/device/:
-r--r--r--    1 root     root          4096 May  6 14:16 ari_enabled
-rw-r--r--    1 root     root          4096 May  6 14:16 broken_parity_status
-r--r--r--    1 root     root          4096 May  6 14:16 class
-rw-r--r--    1 root     root           256 May  6 14:16 config
-r--r--r--    1 root     root          4096 May  6 14:16 consistent_dma_mask_bits
-rw-r--r--    1 root     root          4096 May  6 14:16 d3cold_allowed
-r--r--r--    1 root     root          4096 May  6 14:16 device
-r--r--r--    1 root     root          4096 May  6 14:16 dma_mask_bits
lrwxrwxrwx    1 root     root             0 May  6 14:16 driver -> ../../../bus/pci/drivers/snd_hda_intel
-rw-r--r--    1 root     root          4096 May  6 14:16 driver_override
-rw-r--r--    1 root     root          4096 May  6 14:16 enable
lrwxrwxrwx    1 root     root             0 May  6 14:16 firmware_node -> ../../LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:25
drwxr-xr-x    4 root     root             0 May  6 14:16 hdaudioC0D0
-r--r--r--    1 root     root          4096 May  6 14:16 irq
-r--r--r--    1 root     root          4096 May  6 14:16 local_cpulist
-r--r--r--    1 root     root          4096 May  6 14:16 local_cpus
-r--r--r--    1 root     root          4096 May  6 14:16 modalias
-rw-r--r--    1 root     root          4096 May  6 14:16 msi_bus
drwxr-xr-x    2 root     root             0 May  6 14:16 power
-r--r--r--    1 root     root          4096 May  6 14:16 power_state
--w--w----    1 root     root          4096 May  6 14:16 remove
--w-------    1 root     root          4096 May  6 14:16 rescan
--w-------    1 root     root          4096 May  6 14:16 reset
-rw-r--r--    1 root     root          4096 May  6 14:16 reset_method
-r--r--r--    1 root     root          4096 May  6 14:16 resource
-rw-------    1 root     root         16384 May  6 14:16 resource0
-r--r--r--    1 root     root          4096 May  6 14:16 revision
drwxr-xr-x    3 root     root             0 May  6 14:16 sound
lrwxrwxrwx    1 root     root             0 May  6 14:16 subsystem -> ../../../bus/pci
-r--r--r--    1 root     root          4096 May  6 14:16 subsystem_device
-r--r--r--    1 root     root          4096 May  6 14:16 subsystem_vendor
-rw-r--r--    1 root     root          4096 May  6 14:16 uevent
-r--r--r--    1 root     root          4096 May  6 14:16 vendor

/sys/class/sound/card1/device/:
-rw-r--r--    1 root     root          4096 May  6 14:16 authorized
-r--r--r--    1 root     root          4096 May  6 14:16 bAlternateSetting
-r--r--r--    1 root     root          4096 May  6 14:16 bInterfaceClass
-r--r--r--    1 root     root          4096 May  6 14:16 bInterfaceNumber
-r--r--r--    1 root     root          4096 May  6 14:16 bInterfaceProtocol
-r--r--r--    1 root     root          4096 May  6 14:16 bInterfaceSubClass
-r--r--r--    1 root     root          4096 May  6 14:16 bNumEndpoints
lrwxrwxrwx    1 root     root             0 May  6 14:16 driver -> ../../../../../../bus/usb/drivers/snd-usb-audio
lrwxrwxrwx    1 root     root             0 May  6 14:16 firmware_node -> ../../../../../LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:18/device:19/device:22
-r--r--r--    1 root     root          4096 May  6 14:16 iad_bFirstInterface
-r--r--r--    1 root     root          4096 May  6 14:16 iad_bFunctionClass
-r--r--r--    1 root     root          4096 May  6 14:16 iad_bFunctionProtocol
-r--r--r--    1 root     root          4096 May  6 14:16 iad_bFunctionSubClass
-r--r--r--    1 root     root          4096 May  6 14:16 iad_bInterfaceCount
-r--r--r--    1 root     root          4096 May  6 14:16 modalias
drwxr-xr-x    2 root     root             0 May  6 14:16 power
drwxr-xr-x    3 root     root             0 May  5 22:50 sound
lrwxrwxrwx    1 root     root             0 May  6 14:16 subsystem -> ../../../../../../bus/usb
-r--r--r--    1 root     root          4096 May  6 14:16 supports_autosuspend
-rw-r--r--    1 root     root          4096 May  5 22:50 uevent