Le 26/07/2023 à 17:02, Herve Codina a écrit :
> The framer codec interracts with a framer.
> It allows to use some of the framer timeslots as audio channels to
> transport audio data over the framer E1/T1/J1 lines.
> It also reports line carrier detection events through the ALSA jack
> detection feature.
>
> Signed-off-by: Herve Codina <herve.cod...@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.le...@csgroup.eu>
See below
> +static int framer_dai_hw_rule_channels_by_format(struct snd_soc_dai *dai,
> + struct snd_pcm_hw_params
> *params,
> + unsigned int nb_ts)
> +{
> + struct snd_interval *c = hw_param_interval(params,
> SNDRV_PCM_HW_PARAM_CHANNELS);
> + snd_pcm_format_t format = params_format(params);
> + struct snd_interval ch = {0};
> +
> + switch (snd_pcm_format_physical_width(format)) {
> + case 8:
> + ch.max = nb_ts;
> + break;
> + case 16:
> + ch.max = nb_ts / 2;
> + break;
> + case 32:
> + ch.max = nb_ts / 4;
> + break;
> + case 64:
> + ch.max = nb_ts / 8;
> + break;
> + default:
> + dev_err(dai->dev, "format physical width %u not supported\n",
> + snd_pcm_format_physical_width(format));
> + return -EINVAL;
> + }
What about
width = snd_pcm_format_physical_width(format);
if (width == 8 || width == 16 || width == 32 || width == 64) {
ch.max = nb_ts * 8 / width;
} else {
dev_err(dai->dev, "format physical width %u not supported\n",
width);
return -EINVAL;
}
