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ASoC: rsrc-card: add .be_hw_params_fixup support for convert rate

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Current rsnd-dpcm-card is supporting DPCM FE/BE sound card.
This patch adds .be_hw_params_fixup and enabled sampling convert rate.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2015-03-26 04:01:46 +00:00 committed by Mark Brown
parent 415f1cb29d
commit af7e2be966
2 changed files with 26 additions and 2 deletions
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1
Documentation/devicetree/bindings/sound/renesas,rsrc-card.txt
View file

@ -28,6 +28,7 @@ Optional subnode properties:
dai-link uses bit clock inversion.
- frame-inversion : bool property. Add this if the
dai-link uses frame clock inversion.
- convert-rate : platform specified sampling rate convert
Required CPU/CODEC subnodes properties:

27
sound/soc/sh/rcar/rsrc-card.c
View file

@ -63,6 +63,7 @@ struct rsrc_card_priv {
} dai_props[RSRC_FB_NUM];
struct snd_soc_codec_conf codec_conf;
struct snd_soc_dai_link dai_link[RSRC_FB_NUM];
u32 convert_rate;
};
#define rsrc_priv_to_dev(priv) ((priv)->snd_card.dev)
@ -154,6 +155,21 @@ static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd)
return 0;
}
static int rsrc_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
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);
if (!priv->convert_rate)
return 0;
rate->min = rate->max = priv->convert_rate;
return 0;
}
static int
rsrc_card_sub_parse_of(struct rsrc_card_priv *priv,
struct device_node *np,
@ -347,6 +363,9 @@ static int rsrc_card_dai_link_of(struct device_node *node,
dai_link->ops = &rsrc_card_ops;
dai_link->init = rsrc_card_dai_init;
if (idx == IDX_CODEC)
dai_link->be_hw_params_fixup = rsrc_card_be_hw_params_fixup;
dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
dai_link->cpu_dai_name,
@ -394,8 +413,12 @@ static int rsrc_card_parse_of(struct device_node *node,
priv->snd_card.of_dapm_routes = of_data->routes;
priv->snd_card.num_of_dapm_routes = of_data->num_routes;
dev_dbg(dev, "New rsrc-audio-card: %s\n", priv->snd_card.name ?
priv->snd_card.name : "");
/* 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);
/* FE/BE */
for (i = 0; i < RSRC_FB_NUM; i++) {