I just got an Audio assignment and it's Intel baytrial board with android Kitkat OS.
I am newbie in ALSA. The system can't find the soundcard (Realtek ALC5642). I someone please help me.
When the board startup I got these logs:
[ 5.279213] snd_byt_bl_rt5642: Baytrail Machine Driver byt_rt5642 registerd
[ 5.287138] snd_byt_cr_aic3100: Baytrail Machine Driver byt_aic31xx registerd
[ 5.295181] ALSA device list:
[ 5.298499] No soundcards found.
These information I got when I use these tools:
alsa_aplay -l
aplay: device_list:236: no soundcards found...
/proc/asound # cat cards
--- no soundcards ---
cat devices
1: : sequencer
33: : timer
/proc/asound/oss # cat sndstat
Sound Driver:3.8.1a-980706 (ALSA emulation code)
Kernel: Linux localhost 3.10.20 #1 SMP PREEMPT Wed Jun 25 15:22:06 CEST 2014 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
--- no soundcards ---
Audio devices: NOT ENABLED IN CONFIG
Synth devices: NOT ENABLED IN CONFIG
Midi devices: NOT ENABLED IN CONFIG
Timers:
7: system timer
Mixers: NOT ENABLED IN CONFIG
/proc/asound # cat version
Advanced Linux Sound Architecture Driver Version k3.10.20.
cat asound.conf
# Android ALSA configuration file
#
# Mixer Devices
#
ctl.AndroidPlayback {
type hw
card 0
device 0
}
ctl.AndroidPlayback_Widi {
type hw
card Loopback
device 0
}
ctl.AndroidPlayback_Widi-Loopback {
type hw
card Loopback
device 0
}
ctl.AndroidRecord {
type hw
card 0
device 0
}
ctl.AndroidPlayback_HDMIAudio {
type hw
card 0
device 0
}
#
# Playback Devices
#
pcm.AndroidPlayback {
type plug
slave.pcm "both"
}
pcm.AndroidPlayback_Speaker_normal {
type plug
slave.pcm "speaker"
}
pcm.AndroidPlayback_Headset_normal {
type plug
slave.pcm "headphone"
}
pcm.both {
type hooks
slave.pcm {
type hw
card 0
device 0
}
hooks.0 {
type ctl_elems
hook_args [
{name "Speaker Mux Playback Route" value [1 1]}
{name "Mode Playback Route" value 0}
{name "Playback Switch" value 1}
]
}
}
pcm.speaker {
type hooks
slave.pcm {
type hw
card 0
device 0
}
hooks.0 {
type ctl_elems
hook_args [
{name "Speaker Mux Playback Route" value [1 1]}
{name "Mode Playback Route" value 0}
{name "Playback Switch" value 0}
]
}
}
pcm.headphone {
type hooks
slave.pcm {
type hw
card 0
device 0
}
hooks.0 {
type ctl_elems
hook_args [
{name "Speaker Mux Playback Route" value [0 0]}
{name "Mode Playback Route" value 0}
{name "Playback Switch" value 1}
]
}
}
#
# HDMI routing
#
pcm.HDMIAudio {
type hw
card 0
device 0
}
pcm.AndroidPlayback_HDMIAudio {
type linear
slave {
pcm HDMIAudio
format S24_LE
}
}
pcm.AndroidPlayback_HDMIAudio_normal {
type linear
slave {
pcm HDMIAudio
format S24_LE
}
}
#
# WIDI routing
#
pcm.AndroidPlayback_Widi{
type hw
card Loopback
device 0
subdevice 0
}
pcm.AndroidPlayback_Widi-Loopback{
type plug
slave.pcm "loopback_sink"
}
pcm.AndroidPlayback_Widi-Loopback_normal{
type plug
slave.pcm "loopback_sink"
}
pcm.loopback_sink {
type hw
card Loopback
device 0
subdevice 0
}
#
# Capture device
#
pcm.AndroidCapture {
type hooks
slave.pcm {
type hw
card 0
device 0
}
hooks.0 {
type ctl_elems
hook_args [
{name "DMIC12 Capture Route" value 1}
{name "DMIC34 Capture Route" value 1}
{name "Txpath1 Capture Route" value 0}
{name "Txpath2 Capture Route" value 2}
{name "Txpath3 Capture Route" value 6}
{name "Txpath4 Capture Route" value 6}
]
}
}
#
# WIDI
#
pcm.loopback_src {
type hw
card Loopback
device 1
subdevice 0
}
Best Regards,
Zaid
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