ASoC: core: Add support for getting TX and RX channels
Based on which codec dai is selected, slimbus channel numbers
have to be queried when use case is being enabled.
Change adds support to get the channel numbers.
Change-Id: Iffeaf58b2fa9851efdb9afe4dea59d0fef94b713
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 964b7de..2dc0862 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -138,6 +138,10 @@
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
int direction);
+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);
+
int snd_soc_dai_is_dummy(struct snd_soc_dai *dai);
struct snd_soc_dai_ops {
@@ -166,6 +170,9 @@
unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot);
int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
+ int (*get_channel_map)(struct snd_soc_dai *dai,
+ unsigned int *tx_num, unsigned int *tx_slot,
+ unsigned int *rx_num, unsigned int *rx_slot);
/*
* DAI digital mute - optional.
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 6472467..914a798 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3881,6 +3881,30 @@
}
EXPORT_SYMBOL(snd_soc_info_multi_ext);
+/**
+ * snd_soc_dai_get_channel_map - configure 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
+ *
+ * configure the relationship between channel number and TDM slot number.
+ */
+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 && dai->driver->ops->get_channel_map)
+ return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
+ rx_num, rx_slot);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL(snd_soc_dai_get_channel_map);
+
int snd_soc_of_get_dai_name(struct device_node *of_node,
const char **dai_name)
{