On 23 Oct 2008, at 23:12, Oliver Ford <oliford@xxxxxxxxxxxxx> wrote: > Oliver Ford wrote: > >>> name 'Speaker Playback Volume' >>> value 1 >>> } >>> > This is unrelated, I have just left it there from playing around. > > >> >>> One other thing that would be useful would be to put trace which >>> logs >>> the register writes in ac97_write() in the driver and then try >>> testing >>> both using alsamixer and then amixer to do the final enable of the >>> Speaker Mixer PCM Playback Switch. >>> > Well... > > In terms of the control's direct effect, setting it in alsamixer > gives: > pxa2xx_ac97_write: 0c = af08 > > setting it in amixer: > pxa2xx_ac97_write: 0c = af09 > > > > Am I right in understanding that setting all the controls in amixer > doesn't actually enable the control in the codec chip at that time > but that the powering on/off is done by soc-dapm.c when the the DAC > is actually enabled when playing some audio? This appears to be what > is happening when it does work (looking at the log). I hadn't > realised this. > > However, after running the offending amixer command this no longer > happens. It seems that the dapm_power_widgets() function determines > that the DAC is off and so doesn't power any widgets on at all. > > I've put some debugging in pxa2xx-ac97-write and in > dapm_power_widgets() and the log is attached (stripped of non-audio > stuff). > > > > Oliver > > Clean boot... > > > ** run speaker.sh setup without PCM->speaker setting... ** > pxa2xx_ac97_write: 000c = ef08 > pxa2xx_ac97_write: 001c = 0002 > pxa2xx_ac97_write: 001c = 1802 > pxa2xx_ac97_write: 001e = 0800 > pxa2xx_ac97_write: 0006 = 0081 > pxa2xx_ac97_write: 0002 = 0080 > > ** run alsamixer, set PCM->speaker on: ** > pxa2xx_ac97_write: 000c = af08 > > > # aplay /stuff/400Hz-wav.wav > +hpipaq214_startup() > hpipaq214-audio: Enabling iPAQ Speaker... > hpipaq214_startup, gpio96 -> on > -hpipaq214_startup() > > Playing WAVE '/stuff/400Hz-wav.wav' : Signed 16 bit Little Endian, > Rate 44100 Hz, Mono > pxa2xx_ac97_write: 002a = 0411 > pxa2xx_ac97_write: 002c = ac44 > DAPM: Path Widget 'DAC Inv Mux 2': off --> on > DAPM: Path Widget 'Out 4 Mux': off --> on > DAPM: Path Widget 'Left Speaker Out Mux': off --> on > DAPM: DAC Widget 'Right DAC': off --> on (w->active==1) > pxa2xx_ac97_write: 003c = 3abf > DAPM: DAC Widget 'Left DAC': off --> on (w->active==1) > pxa2xx_ac97_write: 003c = 3a3f > DAPM: Path Widget 'AC97 Mixer': off --> on > DAPM: Path Widget 'Speaker Mixer': off --> on > pxa2xx_ac97_write: 003c = 3a3d > DAPM: Path Widget 'Out 4': off --> on > pxa2xx_ac97_write: 003e = efff > DAPM: Path Widget 'Left Speaker': off --> on > pxa2xx_ac97_write: 003e = eeff > freq changed, set PCD to 5 (LCCR3 = 04700005, LCCR4 = 80000000) > DAPM: Path Widget 'iPAQ Speaker': off --> on > pxa2xx_ac97_write: 003c = 1a3d > hpipaq214_shutdown, gpio96 -> off > > ** aplay exits. ** > > ** ... few seconds delay ... ** > > DAPM: Path Widget 'iPAQ Speaker': on --> off > DAPM: Path Widget 'Out 4': on --> off > pxa2xx_ac97_write: 003e = feff > DAPM: Path Widget 'Left Speaker': on --> off > pxa2xx_ac97_write: 003e = ffff > DAPM: Path Widget 'AC97 Mixer': on --> off > DAPM: Path Widget 'Speaker Mixer': on --> off > pxa2xx_ac97_write: 003c = 1a3f > DAPM: Path Widget 'Right DAC': on --> off > pxa2xx_ac97_write: 003c = 1a7f > DAPM: Path Widget 'Left DAC': on --> off > pxa2xx_ac97_write: 003c = 1aff > DAPM: Path Widget 'DAC Inv Mux 2': on --> off > DAPM: Path Widget 'Out 4 Mux': on --> off > DAPM: Path Widget 'Left Speaker Out Mux': on --> off > pxa2xx_ac97_write: 003c = 1aff > pxa2xx_ac97_write: 0026 = 0000 > > > ** all quiet ** > > # > # > # amixer cset numid=62 1 > pxa2xx_ac97_write: 000c = af09 > numid=62,iface=MIXER,name='Speaker Mixer PCM Playback Swit' > ; type=BOOLEAN,access=rw---,values=1 > : values=on > > > > # aplay /stuff/400Hz-wav.wav > +hpipaq214_startup() > hpipaq214-audio: Enabling iPAQ Speaker... > hpipaq214_startup, gpio96 -> on > -hpipaq214_startup() > > Playing WAVE '/stuff/400Hz-wav.wav' : Signed 16 bit Little Endian, > Rate 44100 Hz, Mono > freq changed, set PCD to 5 (LCCR3 = 04700005, LCCR4 = 80000000) > pxa2xx_ac97_write: 002a = 0411 > pxa2xx_ac97_write: 002c = ac44 > DAPM: DAC Widget 'Right DAC': off --> off (w->active==1) > DAPM: DAC Widget 'Left DAC': off --> off (w->active==1) > pxa2xx_ac97_write: 003c = 1aff > hpipaq214_shutdown, gpio96 -> off > # > # > pxa2xx_ac97_write: 003c = 1aff > pxa2xx_ac97_write: 0026 = 0000 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
