From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Renesas sound device has CTU (= Channel Transfer Unit), and
sound card needs its support.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
.../bindings/sound/renesas,rsrc-card.txt | 1 +
sound/soc/sh/rcar/rsrc-card.c | 22 ++++++++++++++++------
2 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt b/Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt
index 2b2caa2..5abebf7 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt
@@ -30,6 +30,7 @@ Optional subnode properties:
- frame-inversion : bool property. Add this if the
dai-link uses frame clock inversion.
- convert-rate : platform specified sampling rate convert
+- convert-channels : platform specified channel size convert
- audio-prefix : see audio-routing
- audio-routing : A list of the connections between audio components.
Each entry is a pair of strings, the first being the connection's sink,
diff --git a/sound/soc/sh/rcar/rsrc-card.c b/sound/soc/sh/rcar/rsrc-card.c
index 8a357fd..ecf5d47 100644
--- a/sound/soc/sh/rcar/rsrc-card.c
+++ b/sound/soc/sh/rcar/rsrc-card.c
@@ -66,6 +66,7 @@ struct rsrc_card_priv {
struct snd_soc_dai_link *dai_link;
int dai_num;
u32 convert_rate;
+ u32 convert_channels;
};
#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
@@ -145,11 +146,16 @@ static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
+ struct snd_interval *channels = hw_param_interval(params,
+ SNDRV_PCM_HW_PARAM_CHANNELS);
- if (!priv->convert_rate)
- return 0;
+ if (priv->convert_rate)
+ rate->min =
+ rate->max = priv->convert_rate;
- rate->min = rate->max = priv->convert_rate;
+ if (priv->convert_channels)
+ channels->min =
+ channels->max = priv->convert_channels;
return 0;
}
@@ -437,9 +443,13 @@ static int rsrc_card_parse_of(struct device_node *node,
/* sampling rate convert */
of_property_read_u32(node, "convert-rate", &priv->convert_rate);
- dev_dbg(dev, "New rsrc-audio-card: %s (%d)\n",
- priv->snd_card.name ? priv->snd_card.name : "",
- priv->convert_rate);
+ /* channels transfer */
+ of_property_read_u32(node, "convert-channels", &priv->convert_channels);
+
+ dev_dbg(dev, "New rsrc-audio-card: %s\n",
+ priv->snd_card.name ? priv->snd_card.name : "");
+ dev_dbg(dev, "SRC : convert_rate %d\n", priv->convert_rate);
+ dev_dbg(dev, "CTU : convert_channels %d\n", priv->convert_channels);
ret = rsrc_card_dai_link_of(node, priv);
if (ret < 0)
--
1.9.1
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