zymon/seeed-voicecard
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override channels in dts setting

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peter.yang 2017-11-22 07:33:59 +00:00
parent 878027066d
commit 5607fed986
5 changed files with 36 additions and 9 deletions
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2
seeed-4mic-voicecard-overlay.dts
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@ -51,6 +51,8 @@
simple-audio-card,bitclock-master = <&codec_dai>;
simple-audio-card,frame-master = <&codec_dai>;
simple-audio-card,channels-playback-override = <4>;
simple-audio-card,channels-capture-override = <4>;
cpu_dai: simple-audio-card,cpu {
sound-dai = <&i2s>;

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seeed-4mic-voicecard.dtbo
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2
seeed-8mic-voicecard-overlay.dts
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@ -58,6 +58,8 @@
simple-audio-card,bitclock-master = <&codec_dai>;
simple-audio-card,frame-master = <&codec_dai>;
simple-audio-card,channels-playback-override = <8>;
simple-audio-card,channels-capture-override = <8>;
cpu_dai: simple-audio-card,cpu {
sound-dai = <&i2s>;

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seeed-8mic-voicecard.dtbo
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39
simple-card.c
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@ -35,6 +35,10 @@ struct simple_card_data {
unsigned int mclk_fs;
} *dai_props;
unsigned int mclk_fs;
unsigned channels_playback_default;
unsigned channels_playback_override;
unsigned channels_capture_default;
unsigned channels_capture_override;
struct asoc_simple_jack hp_jack;
struct asoc_simple_jack mic_jack;
struct snd_soc_dai_link *dai_link;
@ -125,10 +129,16 @@ static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
if (ret)
clk_disable_unprepare(dai_props->cpu_dai.clk);
rtd->cpu_dai->driver->playback.channels_min = 8;
rtd->cpu_dai->driver->playback.channels_max = 8;
rtd->cpu_dai->driver->capture.channels_min = 8;
rtd->cpu_dai->driver->capture.channels_max = 8;
if (rtd->cpu_dai->driver->playback.channels_min) {
priv->channels_playback_default = rtd->cpu_dai->driver->playback.channels_min;
}
if (rtd->cpu_dai->driver->capture.channels_min) {
priv->channels_capture_default = rtd->cpu_dai->driver->capture.channels_min;
}
rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_override;
rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_override;
rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_override;
rtd->cpu_dai->driver->capture.channels_max = priv->channels_capture_override;
return ret;
}
@ -140,10 +150,10 @@ static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
struct simple_dai_props *dai_props =
simple_priv_to_props(priv, rtd->num);
rtd->cpu_dai->driver->playback.channels_min = 2;
rtd->cpu_dai->driver->playback.channels_max = 2;
rtd->cpu_dai->driver->capture.channels_min = 2;
rtd->cpu_dai->driver->capture.channels_max = 2;
rtd->cpu_dai->driver->playback.channels_min = priv->channels_playback_default;
rtd->cpu_dai->driver->playback.channels_max = priv->channels_playback_default;
rtd->cpu_dai->driver->capture.channels_min = priv->channels_capture_default;
rtd->cpu_dai->driver->capture.channels_max = priv->channels_capture_default;
clk_disable_unprepare(dai_props->cpu_dai.clk);
@ -421,6 +431,19 @@ static int asoc_simple_card_parse_of(struct device_node *node,
ret = asoc_simple_card_parse_aux_devs(node, priv);
priv->channels_playback_default = 0;
priv->channels_playback_override = 2;
priv->channels_capture_default = 0;
priv->channels_capture_override = 2;
of_property_read_u32(node, PREFIX "channels-playback-default",
&priv->channels_playback_default);
of_property_read_u32(node, PREFIX "channels-playback-override",
&priv->channels_playback_override);
of_property_read_u32(node, PREFIX "channels-capture-default",
&priv->channels_capture_default);
of_property_read_u32(node, PREFIX "channels-capture-override",
&priv->channels_capture_override);
card_parse_end:
of_node_put(dai_link);