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ASoC: core: Add support for getting TX and RX channels

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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.

Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
This commit is contained in:
Gopikrishnaiah Anandan 2013-07-04 14:29:17 -04:00 committed by Stephen Boyd
parent 38b8d0868a
commit ee7c814762
2 changed files with 32 additions and 0 deletions
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9
include/sound/soc-dai.h
View File

@ -121,6 +121,11 @@ int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
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);
struct snd_soc_dai_ops {
/*
* DAI clocking configuration, all optional.
@ -144,6 +149,10 @@ struct snd_soc_dai_ops {
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.

23
sound/soc/soc-core.c
View File

@ -4499,6 +4499,29 @@ int snd_soc_info_multi_ext(struct snd_kcontrol *kcontrol,
return 0;
}
EXPORT_SYMBOL_GPL(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_GPL(snd_soc_dai_get_channel_map);
static int __init snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS