[alsa-devel] [PATCH v2] soc/lapis: add machine driver

Tomoya MORINAGA tomoya.rohm at gmail.com
Fri Dec 9 09:38:57 CET 2011


2011/12/7 Mark Brown <broonie at opensource.wolfsonmicro.com>:
> Your above code has no references to dai_fmt.  Have you looked at the
> dai_fmt field in the dai_link structure or at the existing examples of
> its use?

Still I can't understand your saying. Let me clarify.

Firstly, the above "dai_link structure" means below ? If yes, there is
no member "dai_fmt", right ?
697 struct snd_soc_dai_link {
698         /* config - must be set by machine driver */
699         const char *name;                       /* Codec name */
700         const char *stream_name;                /* Stream name */
701         const char *codec_name;         /* for multi-codec */
702         const char *platform_name;      /* for multi-platform */
703         const char *cpu_dai_name;
704         const char *codec_dai_name;
705
706         /* Keep DAI active over suspend */
707         unsigned int ignore_suspend:1;
708
709         /* Symmetry requirements */
710         unsigned int symmetric_rates:1;
711
712         /* codec/machine specific init - e.g. add machine controls */
713         int (*init)(struct snd_soc_pcm_runtime *rtd);
714
715         /* machine stream operations */
716         struct snd_soc_ops *ops;
717

> +     ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
> +                             SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
At the above point, do you mean I shouldn't  set these formats(
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS)
directly ?

Anyway,let me know your best reference driver obeys your saying about it.

thanks,
tomoya


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