Hi Simon, Mark
I noticed that bockw 4th sound device doesn't work on latest linus/master.
My git bisect said the trigger is this patch
e14ee5deab24200e4b70fe31a8c806f0acd3d37c (ARM: shmobile: bockw: Do not enable CONFIG_DEVTMPFS defconfig)
This patch removed below from defconfig
-CONFIG_DEVTMPFS=y -CONFIG_DEVTMPFS_MOUNT=y
But, why this has relationship to sound ??
#0 - #3 sound device have no problem. But #4 sound device will be broken by this patch Do you have any idea ?
--- my kernel log ------- ... ALSA device list: #0: SSI56-AK4643 #1: SSI3-AK4554(playback) #2: SSI4-AK4554(capture) #3: SSI7-AK4554(playback) #4: SSI8-AK4554(capture)
--- test result of 4th device (bad case) ---
# /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card arecord: main:608: audio open error: No such file or directory
--- test result of 4th device (good case) ---
# /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge Recording WAVE '/tmp/hoge' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo