Hi, I still have a question :If alsa are not added to the system ,are there other solutions to make the system generate sound ?Is alsa the only way? Thanks --Weber
On Jul 26, 10:53 pm, Weber <[email protected]> wrote: > 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 -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
