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SubjectRe: [alsa-devel] [PATCH 1/3] ASoC: Add ADAV80x codec driver
On 23/06/11 07:00, Lars-Peter Clausen wrote:
> This patch adds support for the Analog Devices ADAV801 and ADAV803 audio codec.
>
> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
>
> ---
> Changes since v1:
> * Sync register on resume
> * Don't use arrays for the mux enums and controls
> * Rework PLL handling. Use DAPM for powering the PLL and OSC down and use
> set_sysclk to select the system clock instead of doing this implicitly in
> set_pll.
> ---
> MAINTAINERS | 1 +
> sound/soc/codecs/Kconfig | 4 +
> sound/soc/codecs/Makefile | 2 +
> sound/soc/codecs/adav80x.c | 908 ++++++++++++++++++++++++++++++++++++++++++++
> sound/soc/codecs/adav80x.h | 31 ++
> 5 files changed, 946 insertions(+), 0 deletions(-)
> create mode 100644 sound/soc/codecs/adav80x.c
> create mode 100644 sound/soc/codecs/adav80x.h
>

snip

> +
> +static int adav80x_probe(struct snd_soc_codec *codec)
> +{
> + int ret;
> + struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
> +
> + ret = snd_soc_codec_set_cache_io(codec, 7, 9, adav80x->control_type);
> + if (ret) {
> + dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
> + return ret;
> + }
> +
> + /* Power down SYSCLK output, power down S/PDIF receiver */
> + snd_soc_write(codec, ADAV80X_PLL_OUTE, 0x27);
> + /* Disable DAC zero flag */
> + snd_soc_write(codec, ADAV80X_DAC_CTRL3, 0x6);
> +
> + return adav80x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
> +}
> +

It's usually better disable things like sysclk output in your machine driver as others may depend on it for probing.

Liam


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