Hi,everyone
I now want to porting alsa to eclair.My board are smdk6410,the audio
module are wm8987.
these are my steps:
1.download the snapshot of eclair version from android.git.kernel.org/
platform/external
and then tar them to external/
2.
build/target/board/.../BoardConfig.mk
#HAVE_HTC_AUDIO_DRIVER := true
BOARD_USES_GENERIC_AUDIO :=false
BOARD_USES_ALSA_AUDIO := true
BUILD_WITH_ALSA_UTILS := true
3.make and add sth to init.rc
# for alsa sound
chown audio audio /dev/snd/controlC0
chown audio audio /dev/snd/pcmC0D0c
chown audio audio /dev/snd/pcmC0D0p
chown audio audio /dev/snd/timer
chown audio audio /dev/snd/audio
chown audio audio /dev/snd/dsp
chown audio audio /dev/snd/mixer
chown audio audio /dev/snd/seq
chown audio audio /dev/snd/
chmod 0666 /dev/snd/controlC0
chmod 0666 /dev/snd/pcmC0D0c
chmod 0666 /dev/snd/pcmC0D0p
chmod 0666 /dev/snd/timer
chmod 0666 /dev/snd/audio
chmod 0666 /dev/snd/dsp
chmod 0666 /dev/snd/mixer
chmod 0666 /dev/snd/seq
4.add asound.conf to system/etc/asound.conf
then I boot the system ,but the system can't bootup now!(before
porting the alsa,it can bootup)
I can see the log from the std output:
# init: untracked pid 901 exited
# init: untracked pid 991 exited
# init: untracked pid 1079 exited
and I found that the print pids are the pids of /system/bin/
mediaserver
and here are the logcat related alsa:(no error )
330 D/AudioHardwareALSA( 687): openOutputStream called for devices:
0x00000002
331 D/ALSAModule( 687): open called for devices 00000002 in mode
0...
574 I/ALSAModule( 687): Initialized ALSA PLAYBACK device
AndroidPlayback_Speaker_normal
615 I/AudioFlinger( 687): AudioFlinger's thread 0x32520 ready to run
616 D/ALSAModule( 687): route called for devices 00000002 in mode
0...
3949 D/AudioHardwareALSA( 816): openOutputStream called for devices:
0x00000002
3950 D/ALSAModule( 816): open called for devices 00000002 in mode
0...
If I comment the mediaserver in init.rc ,the system still can not boot
up
the logcat are:
4011 I/ServiceManager( 704): Waiting for sevice media.audio_policy...
4012 I/ServiceManager( 704): Waiting for sevice media.audio_policy...
4013 W/AudioSystem( 704): AudioPolicyService not published,
waiting...
4014 I/ServiceManager( 704): Waiting for sevice media.audio_policy...
4015 I/ServiceManager( 704): Waiting for sevice media.audio_policy...
then I try to start it manually and use strace to log it
strace -o /mediaserver-log mediaserver
and the failure-cause-maybe in /mediaserver-log are:
1393 open("/dev/snd/pcmC0D0p", O_RDWR|O_NONBLOCK|O_ASYNC|O_LARGEFILE)
= 11
1394 close(10) = 0
1395 ioctl(11, AGPIOC_ACQUIRE or APM_IOC_STANDBY, 0xbeb646e0) = 0
1396 fcntl64(11, F_GETFL) = 0x22802 (flags O_RDWR|
O_NONBLOCK|O_ASYNC|O_LARGEFILE)
1397 ioctl(11, AGPIOC_INFO, 0xbeb646dc) = 0
1398 ioctl(11, AGPIOC_RELEASE or APM_IOC_SUSPEND, 0xbeb646d4) = 0
1399 mmap2(NULL, 4096, PROT_READ, MAP_SHARED, 11, 0x80000) = -1 ENXIO
(No such device or address)
It seem that mmap2() are the cause .but I don't know what to do now
also ,when run strace -o /mediaserver-log mediaserver
the std output are:
ptrace: umoven: I/O error
ptrace: umoven: I/O error
ptrace: umoven: I/O error
ptrace: umoven: I/O error
ptrace: umoven: I/O error
ptrace: umoven: I/O error
....
So could you help me?
Thanks
--Weber
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