ASoC: core: add support to snd_soc_dai_get_channel_map()
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>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ad5b0ef..81b2792 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2680,6 +2680,28 @@ 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
* @tristate: tristate enable