// SPDX-License-Identifier: GPL-2.0
//
// soc-dai.c
//
// Copyright (C) 2019 Renesas Electronics Corp.
// Kuninori Morimoto <[email protected]>
//
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-link.h>
#define soc_dai_ret(dai, ret) _soc_dai_ret(dai, __func__, ret)
static inline int _soc_dai_ret(const struct snd_soc_dai *dai,
const char *func, int ret)
{
/* Positive, Zero values are not errors */
if (ret >= 0)
return ret;
/* Negative values might be errors */
switch (ret) {
case -EPROBE_DEFER:
case -ENOTSUPP:
break;
default:
dev_err(dai->dev,
"ASoC: error at %s on %s: %d\n",
func, dai->name, ret);
}
return ret;
}
/*
* We might want to check substream by using list.
* In such case, we can update these macros.
*/
#define soc_dai_mark_push(dai, substream, tgt) ((dai)->mark_##tgt = substream)
#define soc_dai_mark_pop(dai, substream, tgt) ((dai)->mark_##tgt = NULL)
#define soc_dai_mark_match(dai, substream, tgt) ((dai)->mark_##tgt == substream)
/**
* snd_soc_dai_set_sysclk - configure DAI system or master clock.
* @dai: DAI
* @clk_id: DAI specific clock ID
* @freq: new clock frequency in Hz
* @dir: new clock direction (SND_SOC_CLOCK_IN or SND_SOC_CLOCK_OUT)
*
* Configures the DAI master (MCLK) or system (SYSCLK) clocking.
*/
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
int ret;
if (dai->driver->ops &&
dai->driver->ops->set_sysclk)
ret = dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
else
ret = snd_soc_component_set_sysclk(dai->component, clk_id, 0,
freq, dir);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
/**
* snd_soc_dai_set_clkdiv - configure DAI clock dividers.
* @dai: DAI
* @div_id: DAI specific clock divider ID
* @div: new clock divisor.
*
* Configures the clock dividers. This is used to derive the best DAI bit and
* frame clocks from the system or master clock. It's best to set the DAI bit
* and frame clocks as low as possible to save system power.
*/
int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
int div_id, int div)
{
int ret = -EINVAL;
if (dai->driver->ops &&
dai->driver->ops->set_clkdiv)
ret = dai->driver->ops->set_clkdiv(dai, div_id, div);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
/**
* snd_soc_dai_set_pll - configure DAI PLL.
* @dai: DAI
* @pll_id: DAI specific PLL ID
* @source: DAI specific source for the PLL
* @freq_in: PLL input clock frequency in Hz
* @freq_out: requested PLL output clock frequency in Hz
*
* Configures and enables PLL to generate output clock based on input clock.
*/
int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out)
{
int ret;
if (dai->driver->ops &&
dai->driver->ops->set_pll)
ret = dai->driver->ops->set_pll(dai, pll_id, source,
freq_in, freq_out);
else
ret = snd_soc_component_set_pll(dai->component, pll_id, source,
freq_in, freq_out);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
/**
* snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
* @dai: DAI
* @ratio: Ratio of BCLK to Sample rate.
*
* Configures the DAI for a preset BCLK to sample rate ratio.
*/
int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
{
int ret = -ENOTSUPP;
if (dai->driver->ops &&
dai->driver->ops->set_bclk_ratio)
ret = dai->driver->ops->set_bclk_ratio(dai, ratio);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
int snd_soc_dai_get_fmt_max_priority(const struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *dai;
int i, max = 0;
/*
* return max num if *ALL* DAIs have .auto_selectable_formats
*/
for_each_rtd_dais(rtd, i, dai) {
if (dai->driver->ops &&
dai->driver->ops->num_auto_selectable_formats)
max = max(max, dai->driver->ops->num_auto_selectable_formats);
else
return 0;
}
return max;
}
/**
* snd_soc_dai_get_fmt - get supported audio format.
* @dai: DAI
* @priority: priority level of supported audio format.
*
* This should return only formats implemented with high
* quality by the DAI so that the core can configure a
* format which will work well with other devices.
* For example devices which don't support both edges of the
* LRCLK signal in I2S style formats should only list DSP
* modes. This will mean that sometimes fewer formats
* are reported here than are supported by set_fmt().
*/
u64 snd_soc_dai_get_fmt(const struct snd_soc_dai *dai, int priority)
{
const struct snd_soc_dai_ops *ops = dai->driver->ops;
u64 fmt = 0;
int i, max = 0, until = priority;
/*
* Collect auto_selectable_formats until priority
*
* ex)
* auto_selectable_formats[] = { A, B, C };
* (A, B, C = SND_SOC_POSSIBLE_DAIFMT_xxx)
*
* priority = 1 : A
* priority = 2 : A | B
* priority = 3 : A | B | C
* priority = 4 : A | B | C
* ...
*/
if (ops)
max = ops->num_auto_selectable_formats;
if (max < until)
until = max;
for (i = 0; i < until; i++)
fmt |= ops->auto_selectable_formats[i];
return fmt;
}
/**
* snd_soc_dai_set_fmt - configure DAI hardware audio format.
* @dai: DAI
* @fmt: SND_SOC_DAIFMT_* format value.
*
* Configures the DAI hardware format and clocking.
*/
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
int ret = -ENOTSUPP;
if (dai->driver->ops && dai->driver->ops->set_fmt)
ret = dai->driver->ops->set_fmt(dai, fmt);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
/**
* snd_soc_xlate_tdm_slot_mask - generate tx/rx slot mask.
* @slots: Number of slots in use.
* @tx_mask: bitmask representing active TX slots.
* @rx_mask: bitmask representing active RX slots.
*
* Generates the TDM tx and rx slot default masks for DAI.
*/
static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
unsigned int *tx_mask,
unsigned int *rx_mask)
{
if (*tx_mask || *rx_mask)
return 0;
if (!slots)
return -EINVAL;
*tx_mask = (1 << slots) - 1;
*rx_mask = (1 << slots) - 1;
return 0;
}
/**
* snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
* @dai: The DAI to configure
* @tx_mask: bitmask representing active TX slots.
* @rx_mask: bitmask representing active RX slots.
* @slots: Number of slots in use.
* @slot_width: Width in bits for each slot.
*
* This function configures the specified DAI for TDM operation. @slot contains
* the total number of slots of the TDM stream and @slot_with the width of each
* slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
* active slots of the TDM stream for the specified DAI, i.e. which slots the
* DAI should write to or read from. If a bit is set the corresponding slot is
* active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
* the first slot, bit 1 to the second slot and so on. The first active slot
* maps to the first channel of the DAI, the second active slot to the second
* channel and so on.
*
* TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
* @rx_mask and @slot_width will be ignored.
*
* Returns 0 on success, a negative error code otherwise.
*/
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width)
{
int ret = -ENOTSUPP;
int stream;
unsigned int *tdm_mask[] = {
&tx_mask,
&rx_mask,
};
if (dai->driver->ops &&
dai->driver->ops->xlate_tdm_slot_mask)
dai->driver->ops->xlate_tdm_slot_mask(slots,
&tx_mask, &rx_mask);
else
snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
for_each_pcm_streams(stream)
snd_soc_dai_tdm_mask_set(dai, stream, *tdm_mask[stream]);
if (dai->driver->ops &&
dai->driver->ops->set_tdm_slot)
ret = dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
slots, slot_width);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
/**
* snd_soc_dai_set_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_set_channel_map(struct snd_soc_dai *dai,
unsigned int tx_num, const unsigned int *tx_slot,
unsigned int rx_num, const unsigned int *rx_slot)
{
int ret = -ENOTSUPP;
if (dai->driver->ops &&
dai->driver->ops->set_channel_map)
ret = dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
rx_num, rx_slot);
return soc_dai_ret(dai, ret);
}
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(const struct snd_soc_dai *dai,
unsigned int *tx_num, unsigned int *tx_slot,
unsigned int *rx_num, unsigned int *rx_slot)
{
int ret = -ENOTSUPP;
if (dai->driver->ops &&
dai->driver->ops->get_channel_map)
ret = dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
rx_num, rx_slot);
return soc_dai_ret(dai, ret);
}
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
*
* Tristates the DAI so that others can use it.
*/
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
{
int ret = -EINVAL;
if (dai->driver->ops &&
dai->driver->ops->set_tristate)
ret = dai->driver->ops->set_tristate(dai, tristate);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
/**
* snd_soc_dai_digital_mute - configure DAI system or master clock.
* @dai: DAI
* @mute: mute enable
* @direction: stream to mute
*
* Mutes the DAI DAC.
*/
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
int direction)
{
int ret = -ENOTSUPP;
/*
* ignore if direction was CAPTURE
* and it had .no_capture_mute flag
*/
if (dai->driver->ops &&
dai->driver->ops->mute_stream &&
(direction == SNDRV_PCM_STREAM_PLAYBACK ||
!dai->driver->ops->no_capture_mute))
ret = dai->driver->ops->mute_stream(dai, mute, direction);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
int snd_soc_dai_hw_params(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
int ret = 0;
if (dai->driver->ops &&
dai->driver->ops->hw_params)
ret = dai->driver->ops->hw_params(substream, params, dai);
/* mark substream if succeeded */
if (ret == 0)
soc_dai_mark_push(dai, substream, hw_params);
return soc_dai_ret(dai, ret);
}
void snd_soc_dai_hw_free(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream,
int rollback)
{
if (rollback && !soc_dai_mark_match(dai, substream, hw_params))
return;
if (dai->driver->ops &&
dai->driver->ops->hw_free)
dai->driver->ops->hw_free(substream, dai);
/* remove marked substream */
soc_dai_mark_pop(dai, substream, hw_params);
}
int snd_soc_dai_startup(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream)
{
int ret = 0;
if (!snd_soc_dai_stream_valid(dai, substream->stream))
return 0;
if (dai->driver->ops &&
dai->driver->ops->startup)
ret = dai->driver->ops->startup(substream, dai);
/* mark substream if succeeded */
if (ret == 0)
soc_dai_mark_push(dai, substream, startup);
return soc_dai_ret(dai, ret);
}
void snd_soc_dai_shutdown(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream,
int rollback)
{
if (!snd_soc_dai_stream_valid(dai, substream->stream))
return;
if (rollback && !soc_dai_mark_match(dai, substream, startup))
return;
if (dai->driver->ops &&
dai->driver->ops->shutdown)
dai->driver->ops->shutdown(substream, dai);
/* remove marked substream */
soc_dai_mark_pop(dai, substream, startup);
}
int snd_soc_dai_compress_new(struct snd_soc_dai *dai,
struct snd_soc_pcm_runtime *rtd, int num)
{
int ret = -ENOTSUPP;
if (dai->driver->ops &&
dai->driver->ops->compress_new)
ret = dai->driver->ops->compress_new(rtd, num);
return soc_dai_ret(dai, ret);
}
/*
* snd_soc_dai_stream_valid() - check if a DAI supports the given stream
*
* Returns true if the DAI supports the indicated stream type.
*/
bool snd_soc_dai_stream_valid(const struct snd_soc_dai *dai, int dir)
{
const struct snd_soc_pcm_stream *stream = snd_soc_dai_get_pcm_stream(dai, dir);
/* If the codec specifies any channels at all, it supports the stream */
return stream->channels_min;
}
void snd_soc_dai_action(struct snd_soc_dai *dai,
int stream, int action)
{
/* see snd_soc_dai_stream_active() */
dai->stream[stream].active += action;
/* see snd_soc_component_active() */
dai->component->active += action;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_action);
int snd_soc_dai_active(const struct snd_soc_dai *dai)
{
int stream, active;
active = 0;
for_each_pcm_streams(stream)
active += dai->stream[stream].active;
return active;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_active);
int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order)
{
struct snd_soc_dai *dai;
int i;
for_each_rtd_dais(rtd, i, dai) {
if (dai->probed)
continue;
if (dai->driver->ops) {
if (dai->driver->ops->probe_order != order)
continue;
if (dai->driver->ops->probe) {
int ret = dai->driver->ops->probe(dai);
if (ret < 0)
return soc_dai_ret(dai, ret);
}
}
dai->probed = 1;
}
return 0;
}
int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order)
{
struct snd_soc_dai *dai;
int i, r, ret = 0;
for_each_rtd_dais(rtd, i, dai) {
if (!dai->probed)
continue;
if (dai->driver->ops) {
if (dai->driver->ops->remove_order != order)
continue;
if (dai->driver->ops->remove) {
r = dai->driver->ops->remove(dai);
if (r < 0)
ret = r; /* use last error */
}
}
dai->probed = 0;
}
return ret;
}
int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *dai;
int i;
for_each_rtd_dais(rtd, i, dai) {
if (dai->driver->ops &&
dai->driver->ops->pcm_new) {
int ret = dai->driver->ops->pcm_new(rtd, dai);
if (ret < 0)
return soc_dai_ret(dai, ret);
}
}
return 0;
}
int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *dai;
int i, ret;
for_each_rtd_dais(rtd, i, dai) {
if (!snd_soc_dai_stream_valid(dai, substream->stream))
continue;
if (dai->driver->ops &&
dai->driver->ops->prepare) {
ret = dai->driver->ops->prepare(substream, dai);
if (ret < 0)
return soc_dai_ret(dai, ret);
}
}
return 0;
}
static int soc_dai_trigger(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream, int cmd)
{
int ret = 0;
if (!snd_soc_dai_stream_valid(dai, substream->stream))
return 0;
if (dai->driver->ops &&
dai->driver->ops->trigger)
ret = dai->driver->ops->trigger(substream, cmd, dai);
return soc_dai_ret(dai, ret);
}
int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream,
int cmd, int rollback)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *dai;
int i, r, ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
for_each_rtd_dais(rtd, i, dai) {
ret = soc_dai_trigger(dai, substream, cmd);
if (ret < 0)
break;
if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
snd_soc_dai_digital_mute(dai, 0, substream->stream);
soc_dai_mark_push(dai, substream, trigger);
}
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
for_each_rtd_dais(rtd, i, dai) {
if (rollback && !soc_dai_mark_match(dai, substream, trigger))
continue;
if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
snd_soc_dai_digital_mute(dai, 1, substream->stream);
r = soc_dai_trigger(dai, substream, cmd);
if (r < 0)
ret = r; /* use last ret */
soc_dai_mark_pop(dai, substream, trigger);
}
}
return ret;
}
void snd_soc_pcm_dai_delay(struct snd_pcm_substream *substream,
snd_pcm_sframes_t *cpu_delay,
snd_pcm_sframes_t *codec_delay)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *dai;
int i;
/*
* We're looking for the delay through the full audio path so it needs to
* be the maximum of the DAIs doing transmit and the maximum of the DAIs
* doing receive (ie, all CPUs and all CODECs) rather than just the maximum
* of all DAIs.
*/
/* for CPU */
for_each_rtd_cpu_dais(rtd, i, dai)
if (dai->driver->ops &&
dai->driver->ops->delay)
*cpu_delay = max(*cpu_delay, dai->driver->ops->delay(substream, dai));
/* for Codec */
for_each_rtd_codec_dais(rtd, i, dai)
if (dai->driver->ops &&
dai->driver->ops->delay)
*codec_delay = max(*codec_delay, dai->driver->ops->delay(substream, dai));
}
int snd_soc_dai_compr_startup(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->startup)
ret = dai->driver->cops->startup(cstream, dai);
/* mark cstream if succeeded */
if (ret == 0)
soc_dai_mark_push(dai, cstream, compr_startup);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_startup);
void snd_soc_dai_compr_shutdown(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
int rollback)
{
if (rollback && !soc_dai_mark_match(dai, cstream, compr_startup))
return;
if (dai->driver->cops &&
dai->driver->cops->shutdown)
dai->driver->cops->shutdown(cstream, dai);
/* remove marked cstream */
soc_dai_mark_pop(dai, cstream, compr_startup);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_shutdown);
int snd_soc_dai_compr_trigger(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream, int cmd)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->trigger)
ret = dai->driver->cops->trigger(cstream, cmd, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_trigger);
int snd_soc_dai_compr_set_params(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_compr_params *params)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->set_params)
ret = dai->driver->cops->set_params(cstream, params, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_set_params);
int snd_soc_dai_compr_get_params(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_codec *params)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->get_params)
ret = dai->driver->cops->get_params(cstream, params, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_get_params);
int snd_soc_dai_compr_ack(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
size_t bytes)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->ack)
ret = dai->driver->cops->ack(cstream, bytes, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_ack);
int snd_soc_dai_compr_pointer(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_compr_tstamp *tstamp)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->pointer)
ret = dai->driver->cops->pointer(cstream, tstamp, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_pointer);
int snd_soc_dai_compr_set_metadata(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_compr_metadata *metadata)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->set_metadata)
ret = dai->driver->cops->set_metadata(cstream, metadata, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_set_metadata);
int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_compr_metadata *metadata)
{
int ret = 0;
if (dai->driver->cops &&
dai->driver->cops->get_metadata)
ret = dai->driver->cops->get_metadata(cstream, metadata, dai);
return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_compr_get_metadata);
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