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ASoC: core: add support to snd_soc_dai_get_channel_map()

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On Qualcomm platforms, specifically with SLIMbus interfaced codecs,
the codec slim channel numbers are passed to DSP while configuring
the slim audio path. Having get_channel_map() would allow dais to
share such information across multiple dais.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla
2018-07-23 16:54:03 +01:00
committed by Mark Brown
parent a241c3d95b
commit 467b061f1a
2 changed files with 30 additions and 0 deletions
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22
sound/soc/soc-core.c
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@@ -2679,6 +2679,28 @@ int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
/**
* snd_soc_dai_get_channel_map - Get DAI audio channel map
* @dai: DAI
* @tx_num: how many TX channels
* @tx_slot: pointer to an array which imply the TX slot number channel
* 0~num-1 uses
* @rx_num: how many RX channels
* @rx_slot: pointer to an array which imply the RX slot number channel
* 0~num-1 uses
*/
int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
unsigned int *tx_num, unsigned int *tx_slot,
unsigned int *rx_num, unsigned int *rx_slot)
{
if (dai->driver->ops->get_channel_map)
return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
rx_num, rx_slot);
else
return -ENOTSUPP;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
/**
* snd_soc_dai_set_tristate - configure DAI system or master clock.
* @dai: DAI