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SubjectRe: 3.19 on Nokia n900: audio quality awful
Hi!

I looked around the diff between 3.18 and 3.19, reverted these, and
audio quality is back to reasonable level.

commit 68f438378cde79e29f71c7e043b10d76001d8892
Author: Lars-Peter Clausen <lars@metafoo.de>
Date: Wed Nov 26 20:57:57 2014 +0100

ASoC: tlv320aic3x: Cleanup manual bias level transitions

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to
do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

commit 68d6626925c3529790a2055d41578415fa98495e
Author: Misael Lopez Cruz <misael.lopez@ti.com>
Date: Tue Nov 11 10:59:01 2014 +0200

ASoC: tlv320aic3x: Add output driver pop reduction controls

Output driver has two parameters that can be configured to reduce
pop noise: power-on delay and ramp-up step time. Two new
kcontrols
have been added to set these parameters.

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


commit 368494093354ac613a80c2e1d77602aa12473cf0
Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Mon Nov 10 12:27:33 2014 +0200

ASoC: tlv320aic3x: Add TDM support

TDM support is achieved using DSP transfer mode and setting a
programmable offset which specifies where data begins with
respect to the frame sync.

It requires 256-clock mode if CODEC is master (not currently
supported in the driver). No additional dependency if CODEC
is slave.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


> diff --git a/sound/soc/omap/rx51.c b/sound/soc/omap/rx51.c
> index 04896d6252a2..7f299357c2d2 100644
> --- a/sound/soc/omap/rx51.c
> +++ b/sound/soc/omap/rx51.c
> @@ -250,14 +250,14 @@ static const struct snd_soc_dapm_route audio_map[] = {
> {"FM Transmitter", NULL, "LLOUT"},
> {"FM Transmitter", NULL, "RLOUT"},
>
> - {"DMic Rate 64", NULL, "Mic Bias"},
> - {"Mic Bias", NULL, "DMic"},
> + {"DMic Rate 64", NULL, "DMic"},
> + {"DMic", NULL, "Mic Bias"},
>
> {"b LINE2R", NULL, "MONO_LOUT"},
> {"Earphone", NULL, "b HPLOUT"},
>
> - {"LINE1L", NULL, "b Mic Bias"},
> - {"b Mic Bias", NULL, "HS Mic"}
> + {"LINE1L", NULL, "HS Mic"},
> + {"HS Mic", NULL, "b Mic Bias"},
> };
>
> static const char * const spk_function[] = {"Off", "On"};
>

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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