On Thu, May 22, 2008 at 11:20:08AM -0500, Geoffrey Wossum wrote:
> stream. A patch is found a the bottom of this email. With this patch, the
> registers on the WM8510 seem to be getting configured properly (all the clock
> rates and such look correct), but I get no signal at the speaker outputs or
Almost of this looks good, thanks for spotting these! I've applied the
bits I was able to check, see below for one issue. Note that when
submitting changes it's always best to supply a Signed-off-by, though
for changes like this it's probably OK not to.
> the mono output, no matter what the mixer settings are. They just sit VMID
> after the initial power up of the chip.
Check that all the required DAPM widgets are powered up by looking in
/sys/bus/platform/devices/soc-audio/dapm_widget during playback - if
they aren't then enabling DAPM_DEBUG in sound/soc/soc-dapm.c will make
DAPM display information about the decisions it's making. If you can't
see anything there could you please supply a register dump from during
playback (availible in /sys/bus/platform/devices/soc-audio/codec_reg)?
I'm out of the office at the minute so can't test on actual hardware
myself right now.
> @@ -597,14 +597,14 @@ struct snd_soc_codec_dai wm8510_dai = {
> .name = "WM8510 HiFi",
> .playback = {
> .stream_name = "Playback",
> - .channels_min = 1,
> - .channels_max = 1,
> + .channels_min = 2,
> + .channels_max = 2,
> .rates = WM8510_RATES,
I'll need to check this out in more detail - the WM8510 is a mono codec
so it can only play one channel.
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
