ASoC: rsrc-card: add convert channels support
Renesas sound device has CTU (= Channel Transfer Unit), and sound card needs its support. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -30,6 +30,7 @@ Optional subnode properties:
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- frame-inversion : bool property. Add this if the
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dai-link uses frame clock inversion.
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- convert-rate : platform specified sampling rate convert
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- convert-channels : platform specified channel size convert
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- audio-prefix : see audio-routing
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- audio-routing : A list of the connections between audio components.
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Each entry is a pair of strings, the first being the connection's sink,
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@ -66,6 +66,7 @@ struct rsrc_card_priv {
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struct snd_soc_dai_link *dai_link;
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int dai_num;
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u32 convert_rate;
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u32 convert_channels;
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};
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#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
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@ -144,11 +145,16 @@ static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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if (!priv->convert_rate)
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return 0;
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if (priv->convert_rate)
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rate->min =
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rate->max = priv->convert_rate;
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rate->min = rate->max = priv->convert_rate;
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if (priv->convert_channels)
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channels->min =
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channels->max = priv->convert_channels;
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return 0;
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}
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@ -436,9 +442,13 @@ static int rsrc_card_parse_of(struct device_node *node,
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/* sampling rate convert */
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of_property_read_u32(node, "convert-rate", &priv->convert_rate);
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dev_dbg(dev, "New rsrc-audio-card: %s (%d)\n",
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priv->snd_card.name ? priv->snd_card.name : "",
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priv->convert_rate);
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/* channels transfer */
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of_property_read_u32(node, "convert-channels", &priv->convert_channels);
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dev_dbg(dev, "New rsrc-audio-card: %s\n",
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priv->snd_card.name ? priv->snd_card.name : "");
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dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate);
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dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);
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ret = rsrc_card_dai_link_of(node, priv);
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if (ret < 0)
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