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
