linux/sound/soc/soc-dai.c

// SPDX-License-Identifier: GPL-2.0
//
// soc-dai.c
//
// Copyright (C) 2019 Renesas Electronics Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//

#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)
{
	return snd_soc_ret(dai->dev, ret,
			   "at %s() on %s\n", func, dai->name);
}

/*
 * 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, 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);

	if (!ret)
		dai->bclk_ratio = ratio;

	return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);

/**
 * snd_soc_dai_set_bclk_clk - set the BCLK clock for shared clock detection
 * @dai: DAI
 * @bclk: BCLK clock pointer (or NULL to clear)
 *
 * When multiple DAIs share the same physical BCLK (detected via
 * clk_is_match()), the ASoC core will automatically constrain their
 * hw_params so that the resulting BCLK rates are compatible.
 */
void snd_soc_dai_set_bclk_clk(struct snd_soc_dai *dai, struct clk *bclk)
{
	dai->bclk = bclk;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_clk);

static int soc_dai_fmt_match_cnt(u64 fmt)
{
	int cnt = 0;

	if (fmt & SND_SOC_POSSIBLE_DAIFMT_FORMAT_MASK)
		cnt++;
	if (fmt & SND_SOC_POSSIBLE_DAIFMT_CLOCK_MASK)
		cnt++;
	if (fmt & SND_SOC_POSSIBLE_DAIFMT_INV_MASK)
		cnt++;

	return cnt;
}

static void soc_dai_auto_select_format(u64 fmt, const struct snd_soc_pcm_runtime *rtd,
				      int idx, u64 *best_fmt)
{
	struct snd_soc_dai *dai;
	const struct snd_soc_dai_ops *ops;
	int max_idx = rtd->dai_link->num_cpus + rtd->dai_link->num_codecs;
	u64 available_fmt;

	/*
	 * NOTE
	 * It doesn't support Multi CPU/Codec for now
	 */
	if (rtd->dai_link->num_cpus	!= 1 ||
	    rtd->dai_link->num_codecs	!= 1)
		return;

	if (idx >= max_idx)
		return;

	dai = rtd->dais[idx];
	ops = dai->driver->ops;

	/* zero chance of auto select format */
	if (!ops || !ops->num_auto_selectable_formats)
		return;

	/*
	 ****************************
	 *            NOTE
	 ****************************
	 * Using .auto_selectable_formats is not mandatory,
	 * It try to find best formats as much as possible, but automatically selecting the
	 * perfect format is impossible. So you can select full or missing format manually
	 * from Sound Card.
	 *
	 * ex)
	 * CPU					Codec
	 * (A)[0] I2S/LEFT_J : IB_NF/IB_IF	(X)[0] I2S/DSP_A: NB_NF : GATED
	 * (B)[1] DSP_A/DSP_B: NB_NF/IB_NF	(Y)[1] LEFT_J:    NB_NF : GATED
	 * (C)[2] ...
	 *
	 * 1. (A) -> (X) : I2S		:update best format
	 * 2. (A) -> (Y) : LEFT_J
	 * 3. (B) -> (X) : DSP_A/NB_NF	:update best format
	 * 4. (B) -> (Y) : NB_NF
	 * 5. (C) -> (X) ...
	 * 6. (C) -> (Y) ...
	 * ...
	 *
	 * In above case GATED will not be selected
	 */

	/* find best formats */
	for (int i = 0; i < ops->num_auto_selectable_formats; i++) {
		available_fmt = fmt & ops->auto_selectable_formats[i];

		/* In case of last DAI */
		if (idx + 1 >= max_idx) {
			int cnt1 = soc_dai_fmt_match_cnt(*best_fmt);
			int cnt2 = soc_dai_fmt_match_cnt(available_fmt);

			if (cnt1 < cnt2)
				*best_fmt = available_fmt;
		}
		/* parse with next DAI */
		else {
			soc_dai_auto_select_format(available_fmt, rtd, idx + 1, best_fmt);
		}
	}
}

static unsigned int soc_dai_convert_possiblefmt_to_daifmt(u64 possible_fmt, unsigned int configured_fmt)
{
	unsigned int fmt = 0;
	unsigned int mask = 0;

	/*
	 * convert POSSIBLE_DAIFMT to DAIFMT
	 *
	 * Some basic/default settings on each is defined as 0.
	 * see
	 *	SND_SOC_DAIFMT_NB_NF
	 *	SND_SOC_DAIFMT_GATED
	 *
	 * SND_SOC_DAIFMT_xxx_MASK can't notice it if Sound Card specify
	 * these value, and will be overwrite to auto selected value.
	 *
	 * To avoid such issue, loop from 63 to 0 here.
	 * Small number of SND_SOC_POSSIBLE_xxx will be Hi priority.
	 * Basic/Default settings of each part and above are defined
	 * as Hi priority (= small number) of SND_SOC_POSSIBLE_xxx.
	 */
	for (int i = 63; i >= 0; i--) {
		u64 pos = 1ULL << i;

		switch (possible_fmt & pos) {
		/*
		 * for format
		 */
		case SND_SOC_POSSIBLE_DAIFMT_I2S:
		case SND_SOC_POSSIBLE_DAIFMT_RIGHT_J:
		case SND_SOC_POSSIBLE_DAIFMT_LEFT_J:
		case SND_SOC_POSSIBLE_DAIFMT_DSP_A:
		case SND_SOC_POSSIBLE_DAIFMT_DSP_B:
		case SND_SOC_POSSIBLE_DAIFMT_AC97:
		case SND_SOC_POSSIBLE_DAIFMT_PDM:
			fmt = (fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | i;
			break;
		/*
		 * for clock
		 */
		case SND_SOC_POSSIBLE_DAIFMT_CONT:
			fmt = (fmt & ~SND_SOC_DAIFMT_CLOCK_MASK) | SND_SOC_DAIFMT_CONT;
			break;
		case SND_SOC_POSSIBLE_DAIFMT_GATED:
			fmt = (fmt & ~SND_SOC_DAIFMT_CLOCK_MASK) | SND_SOC_DAIFMT_GATED;
			break;
		/*
		 * for clock invert
		 */
		case SND_SOC_POSSIBLE_DAIFMT_NB_NF:
			fmt = (fmt & ~SND_SOC_DAIFMT_INV_MASK) | SND_SOC_DAIFMT_NB_NF;
			break;
		case SND_SOC_POSSIBLE_DAIFMT_NB_IF:
			fmt = (fmt & ~SND_SOC_DAIFMT_INV_MASK) | SND_SOC_DAIFMT_NB_IF;
			break;
		case SND_SOC_POSSIBLE_DAIFMT_IB_NF:
			fmt = (fmt & ~SND_SOC_DAIFMT_INV_MASK) | SND_SOC_DAIFMT_IB_NF;
			break;
		case SND_SOC_POSSIBLE_DAIFMT_IB_IF:
			fmt = (fmt & ~SND_SOC_DAIFMT_INV_MASK) | SND_SOC_DAIFMT_IB_IF;
			break;
		}
	}

	/*
	 * Some driver might have very complex limitation.
	 * In such case, user want to auto-select non-limitation part,
	 * and want to manually specify complex part.
	 *
	 * Or for example, if both CPU and Codec can be clock provider,
	 * but because of its quality, user want to specify it manually.
	 *
	 * Ignore already configured format if exist
	 */
	if (!(configured_fmt & SND_SOC_DAIFMT_FORMAT_MASK))
		mask |= SND_SOC_DAIFMT_FORMAT_MASK;
	if (!(configured_fmt & SND_SOC_DAIFMT_CLOCK_MASK))
		mask |= SND_SOC_DAIFMT_CLOCK_MASK;
	if (!(configured_fmt & SND_SOC_DAIFMT_INV_MASK))
		mask |= SND_SOC_DAIFMT_INV_MASK;
	if (!(configured_fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK))
		mask |= SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;

	return configured_fmt | (fmt & mask);
}

unsigned int snd_soc_dai_auto_select_format(const struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai_link *dai_link = rtd->dai_link;
	u64 possible_fmt = 0;

	soc_dai_auto_select_format(~0, rtd, 0, &possible_fmt);

	return soc_dai_convert_possiblefmt_to_daifmt(possible_fmt, dai_link->dai_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 (slots) {
		if (dai->driver->ops &&
		    dai->driver->ops->xlate_tdm_slot_mask)
			ret = dai->driver->ops->xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
		else
			ret = snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
		if (ret)
			goto err;
	}

	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);
err:
	return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);

/**
 * snd_soc_dai_set_tdm_idle() - Configure a DAI's TDM idle mode
 * @dai: The DAI to configure
 * @tx_mask: bitmask representing idle TX slots.
 * @rx_mask: bitmask representing idle RX slots.
 * @tx_mode: idle mode to set for TX slots.
 * @rx_mode: idle mode to set for RX slots.
 *
 * This function configures the DAI to handle idle TDM slots in the
 * specified manner. @tx_mode and @rx_mode can be one of
 * SND_SOC_DAI_TDM_IDLE_NONE, SND_SOC_DAI_TDM_IDLE_ZERO,
 * SND_SOC_DAI_TDM_IDLE_PULLDOWN, or SND_SOC_DAI_TDM_IDLE_HIZ.
 * SND_SOC_TDM_IDLE_NONE represents the DAI's default/unset idle slot
 * handling state and could be any of the other modes depending on the
 * hardware behind the DAI. It is therefore undefined behaviour when set
 * explicitly.
 *
 * Mode and mask can be set independently for both the TX and RX direction.
 * Some hardware may ignore both TX and RX masks depending on its
 * capabilities.
 */
int snd_soc_dai_set_tdm_idle(struct snd_soc_dai *dai,
			     unsigned int tx_mask, unsigned int rx_mask,
			     int tx_mode, int rx_mode)
{
	int ret = -EOPNOTSUPP;

	/* You can't write to the RX line */
	if (rx_mode == SND_SOC_DAI_TDM_IDLE_ZERO)
		return soc_dai_ret(dai, -EINVAL);

	if (dai->driver->ops &&
	    dai->driver->ops->set_tdm_idle)
		ret = dai->driver->ops->set_tdm_idle(dai, tx_mask, rx_mask,
						     tx_mode, rx_mode);

	return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_idle);

/**
 * 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);

int snd_soc_dai_prepare(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->prepare)
		ret = dai->driver->ops->prepare(substream, dai);

	return soc_dai_ret(dai, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_dai_prepare);

int snd_soc_dai_mute_is_ctrled_at_trigger(struct snd_soc_dai *dai)
{
	if (dai->driver->ops)
		return dai->driver->ops->mute_unmute_on_trigger;

	return 0;
}

/**
 * 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, 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, startup);
}

int snd_soc_dai_compress_new(struct snd_soc_dai *dai,
			     struct snd_soc_pcm_runtime *rtd)
{
	int ret = -ENOTSUPP;
	if (dai->driver->ops &&
	    dai->driver->ops->compress_new)
		ret = dai->driver->ops->compress_new(rtd);
	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) {
		ret = snd_soc_dai_prepare(dai, substream);
		if (ret < 0)
			return 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 (snd_soc_dai_mute_is_ctrled_at_trigger(dai))
				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 (snd_soc_dai_mute_is_ctrled_at_trigger(dai))
				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, 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, 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_tstamp64 *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);