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Name	Size	Permission	Date
ac97	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
sof	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
ac97_codec.h	15.8 KB	-rw-r--r--	2024-03-10 20:38
aci.h	2.4 KB	-rw-r--r--	2024-03-10 20:38
acp63_chip_offset_byte.h	29.75 KB	-rw-r--r--	2024-03-10 20:38
ad1816a.h	4.73 KB	-rw-r--r--	2024-03-10 20:38
ad1843.h	1.48 KB	-rw-r--r--	2024-03-10 20:38
adau1373.h	706 B	-rw-r--r--	2024-03-10 20:38
ak4113.h	10.22 KB	-rw-r--r--	2024-03-10 20:38
ak4114.h	9.54 KB	-rw-r--r--	2024-03-10 20:38
ak4117.h	8.34 KB	-rw-r--r--	2024-03-10 20:38
ak4531_codec.h	2.42 KB	-rw-r--r--	2024-03-10 20:38
ak4641.h	476 B	-rw-r--r--	2024-03-10 20:38
ak4xxx-adda.h	2.66 KB	-rw-r--r--	2024-03-10 20:38
alc5623.h	536 B	-rw-r--r--	2024-03-10 20:38
asequencer.h	3.06 KB	-rw-r--r--	2024-03-10 20:38
asound.h	590 B	-rw-r--r--	2024-03-10 20:38
asoundef.h	16.02 KB	-rw-r--r--	2024-03-10 20:38
compress_driver.h	7.8 KB	-rw-r--r--	2024-03-10 20:38
control.h	10.73 KB	-rw-r--r--	2024-03-10 20:38
core.h	15.78 KB	-rw-r--r--	2024-03-10 20:38
cs35l33.h	888 B	-rw-r--r--	2024-03-10 20:38
cs35l34.h	741 B	-rw-r--r--	2024-03-10 20:38
cs35l35.h	2.21 KB	-rw-r--r--	2024-03-10 20:38
cs35l36.h	772 B	-rw-r--r--	2024-03-10 20:38
cs35l41.h	34.14 KB	-rw-r--r--	2024-03-10 20:38
cs35l56.h	10.47 KB	-rw-r--r--	2026-05-26 09:55
cs4231-regs.h	7.6 KB	-rw-r--r--	2024-03-10 20:38
cs4271.h	906 B	-rw-r--r--	2024-03-10 20:38
cs42l42.h	34.51 KB	-rw-r--r--	2024-03-10 20:38
cs42l43.h	385 B	-rw-r--r--	2024-03-10 20:38
cs42l52.h	592 B	-rw-r--r--	2024-03-10 20:38
cs42l56.h	1.02 KB	-rw-r--r--	2024-03-10 20:38
cs42l73.h	361 B	-rw-r--r--	2024-03-10 20:38
cs8403.h	7.95 KB	-rw-r--r--	2024-03-10 20:38
cs8427.h	9.72 KB	-rw-r--r--	2024-03-10 20:38
da7213.h	1.01 KB	-rw-r--r--	2024-03-10 20:38
da7218.h	2.41 KB	-rw-r--r--	2024-03-10 20:38
da7219-aad.h	2.37 KB	-rw-r--r--	2024-03-10 20:38
da7219.h	998 B	-rw-r--r--	2024-03-10 20:38
da9055.h	707 B	-rw-r--r--	2024-03-10 20:38
designware_i2s.h	1.66 KB	-rw-r--r--	2024-03-10 20:38
dmaengine_pcm.h	6.7 KB	-rw-r--r--	2026-05-26 09:55
emu10k1.h	93.94 KB	-rw-r--r--	2026-05-26 09:55
emu10k1_synth.h	693 B	-rw-r--r--	2024-03-10 20:38
emu8000.h	3.25 KB	-rw-r--r--	2024-03-10 20:38
emu8000_reg.h	9.54 KB	-rw-r--r--	2024-03-10 20:38
emux_legacy.h	4.7 KB	-rw-r--r--	2024-03-10 20:38
emux_synth.h	6.78 KB	-rw-r--r--	2024-03-10 20:38
es1688.h	2.85 KB	-rw-r--r--	2024-03-10 20:38
graph_card.h	1.04 KB	-rw-r--r--	2024-03-10 20:38
gus.h	19.65 KB	-rw-r--r--	2024-03-10 20:38
hda-mlink.h	6.13 KB	-rw-r--r--	2024-03-10 20:38
hda_chmap.h	2.6 KB	-rw-r--r--	2024-03-10 20:38
hda_codec.h	17.75 KB	-rw-r--r--	2026-05-26 09:55
hda_component.h	2.04 KB	-rw-r--r--	2024-03-10 20:38
hda_hwdep.h	736 B	-rw-r--r--	2024-03-10 20:38
hda_i915.h	589 B	-rw-r--r--	2024-03-10 20:38
hda_register.h	11.93 KB	-rw-r--r--	2024-03-10 20:38
hda_regmap.h	6.77 KB	-rw-r--r--	2024-03-10 20:38
hda_verbs.h	16.88 KB	-rw-r--r--	2024-03-10 20:38
hdaudio.h	24.4 KB	-rw-r--r--	2024-03-10 20:38
hdaudio_ext.h	4.59 KB	-rw-r--r--	2026-05-26 09:55
hdmi-codec.h	3.04 KB	-rw-r--r--	2024-03-10 20:38
hwdep.h	1.88 KB	-rw-r--r--	2024-03-10 20:38
i2c.h	2.79 KB	-rw-r--r--	2024-03-10 20:38
info.h	7.75 KB	-rw-r--r--	2024-03-10 20:38
initval.h	2.43 KB	-rw-r--r--	2024-03-10 20:38
intel-dsp-config.h	896 B	-rw-r--r--	2024-03-10 20:38
intel-nhlt.h	3.75 KB	-rw-r--r--	2024-03-10 20:38
jack.h	3.1 KB	-rw-r--r--	2024-03-10 20:38
madera-pdata.h	1.95 KB	-rw-r--r--	2024-03-10 20:38
max9768.h	544 B	-rw-r--r--	2024-03-10 20:38
max98088.h	1.05 KB	-rw-r--r--	2024-03-10 20:38
max98090.h	534 B	-rw-r--r--	2024-03-10 20:38
max98095.h	1.33 KB	-rw-r--r--	2024-03-10 20:38
memalloc.h	3.79 KB	-rw-r--r--	2024-03-10 20:38
minors.h	3.65 KB	-rw-r--r--	2024-03-10 20:38
mixer_oss.h	1.73 KB	-rw-r--r--	2024-03-10 20:38
mpu401.h	3.81 KB	-rw-r--r--	2024-03-10 20:38
omap-hdmi-audio.h	971 B	-rw-r--r--	2024-03-10 20:38
opl3.h	11.62 KB	-rw-r--r--	2024-03-10 20:38
opl4.h	459 B	-rw-r--r--	2024-03-10 20:38
pcm-indirect.h	5.18 KB	-rw-r--r--	2024-03-10 20:38
pcm.h	54.31 KB	-rw-r--r--	2026-05-26 09:55
pcm_drm_eld.h	183 B	-rw-r--r--	2024-03-10 20:38
pcm_iec958.h	597 B	-rw-r--r--	2024-03-10 20:38
pcm_oss.h	2.01 KB	-rw-r--r--	2024-03-10 20:38
pcm_params.h	8.72 KB	-rw-r--r--	2024-03-10 20:38
pt2258.h	513 B	-rw-r--r--	2024-03-10 20:38
pxa2xx-lib.h	2.25 KB	-rw-r--r--	2024-03-10 20:38
rawmidi.h	6.01 KB	-rw-r--r--	2024-03-10 20:38
rt1015.h	283 B	-rw-r--r--	2024-03-10 20:38
rt286.h	314 B	-rw-r--r--	2024-03-10 20:38
rt298.h	373 B	-rw-r--r--	2024-03-10 20:38
rt5514.h	399 B	-rw-r--r--	2024-03-10 20:38
rt5659.h	880 B	-rw-r--r--	2024-03-10 20:38
rt5660.h	578 B	-rw-r--r--	2024-03-10 20:38
rt5663.h	476 B	-rw-r--r--	2024-03-10 20:38
rt5665.h	723 B	-rw-r--r--	2024-03-10 20:38
rt5668.h	607 B	-rw-r--r--	2024-03-10 20:38
rt5682.h	862 B	-rw-r--r--	2024-03-10 20:38
rt5682s.h	1.01 KB	-rw-r--r--	2024-03-10 20:38
sb.h	10.3 KB	-rw-r--r--	2024-03-10 20:38
sb16_csp.h	2.05 KB	-rw-r--r--	2024-03-10 20:38
sdw.h	1.63 KB	-rw-r--r--	2024-03-10 20:38
seq_device.h	2.16 KB	-rw-r--r--	2024-03-10 20:38
seq_kernel.h	3.66 KB	-rw-r--r--	2024-03-10 20:38
seq_midi_emul.h	6.6 KB	-rw-r--r--	2024-03-10 20:38
seq_midi_event.h	1.32 KB	-rw-r--r--	2024-03-10 20:38
seq_oss.h	2.21 KB	-rw-r--r--	2024-03-10 20:38
seq_oss_legacy.h	360 B	-rw-r--r--	2024-03-10 20:38
seq_virmidi.h	2.07 KB	-rw-r--r--	2024-03-10 20:38
sh_dac_audio.h	441 B	-rw-r--r--	2024-03-10 20:38
sh_fsi.h	693 B	-rw-r--r--	2024-03-10 20:38
simple_card.h	524 B	-rw-r--r--	2024-03-10 20:38
simple_card_utils.h	8.69 KB	-rw-r--r--	2024-03-10 20:38
snd_wavefront.h	5.49 KB	-rw-r--r--	2026-05-26 09:55
soc-acpi-intel-match.h	2.5 KB	-rw-r--r--	2024-03-10 20:38
soc-acpi.h	7.01 KB	-rw-r--r--	2024-03-10 20:38
soc-card.h	3.56 KB	-rw-r--r--	2024-03-10 20:38
soc-component.h	20.11 KB	-rw-r--r--	2024-03-10 20:38
soc-dai.h	20.75 KB	-rw-r--r--	2024-03-10 20:38
soc-dapm.h	33.45 KB	-rw-r--r--	2024-03-10 20:38
soc-dpcm.h	5.56 KB	-rw-r--r--	2024-03-10 20:38
soc-jack.h	3.73 KB	-rw-r--r--	2024-03-10 20:38
soc-link.h	1.14 KB	-rw-r--r--	2024-03-10 20:38
soc-topology.h	5.74 KB	-rw-r--r--	2024-03-10 20:38
soc.h	53.84 KB	-rw-r--r--	2026-05-26 09:55
sof.h	4.54 KB	-rw-r--r--	2024-03-10 20:38
soundfont.h	3.81 KB	-rw-r--r--	2024-03-10 20:38
spear_dma.h	350 B	-rw-r--r--	2024-03-10 20:38
spear_spdif.h	345 B	-rw-r--r--	2024-03-10 20:38
sta32x.h	1015 B	-rw-r--r--	2024-03-10 20:38
sta350.h	1.44 KB	-rw-r--r--	2024-03-10 20:38
tas2552-plat.h	283 B	-rw-r--r--	2024-03-10 20:38
tas2781-dsp.h	4.85 KB	-rw-r--r--	2026-05-26 09:55
tas2781-tlv.h	579 B	-rw-r--r--	2026-05-26 09:55
tas2781.h	5.27 KB	-rw-r--r--	2026-05-26 09:55
tas5086.h	210 B	-rw-r--r--	2024-03-10 20:38
tea6330t.h	468 B	-rw-r--r--	2024-03-10 20:38
timer.h	4.99 KB	-rw-r--r--	2024-03-10 20:38
tlv.h	1.59 KB	-rw-r--r--	2024-03-10 20:38
tlv320aic32x4.h	1.29 KB	-rw-r--r--	2024-03-10 20:38
tlv320dac33-plat.h	574 B	-rw-r--r--	2024-03-10 20:38
tpa6130a2-plat.h	291 B	-rw-r--r--	2024-03-10 20:38
uda1380.h	335 B	-rw-r--r--	2024-03-10 20:38
ump.h	8.14 KB	-rw-r--r--	2026-05-26 09:55
ump_convert.h	1.25 KB	-rw-r--r--	2026-05-26 09:55
ump_msg.h	13.81 KB	-rw-r--r--	2026-05-26 09:55
util_mem.h	1.58 KB	-rw-r--r--	2024-03-10 20:38
vx_core.h	14.7 KB	-rw-r--r--	2024-03-10 20:38
wavefront.h	16.32 KB	-rw-r--r--	2024-03-10 20:38
wm0010.h	321 B	-rw-r--r--	2024-03-10 20:38
wm2000.h	479 B	-rw-r--r--	2024-03-10 20:38
wm2200.h	1.21 KB	-rw-r--r--	2024-03-10 20:38
wm5100.h	935 B	-rw-r--r--	2024-03-10 20:38
wm8903.h	15.02 KB	-rw-r--r--	2024-03-10 20:38
wm8904.h	7.22 KB	-rw-r--r--	2024-03-10 20:38
wm8955.h	442 B	-rw-r--r--	2024-03-10 20:38
wm8960.h	888 B	-rw-r--r--	2024-03-10 20:38
wm8962.h	1.65 KB	-rw-r--r--	2024-03-10 20:38
wm8993.h	1.05 KB	-rw-r--r--	2024-03-10 20:38
wm8996.h	1.19 KB	-rw-r--r--	2024-03-10 20:38
wm9081.h	515 B	-rw-r--r--	2024-03-10 20:38
wm9090.h	634 B	-rw-r--r--	2024-03-10 20:38
wss.h	7.76 KB	-rw-r--r--	2024-03-10 20:38

Rename

/* SPDX-License-Identifier: GPL-2.0+
 *
 *  Copyright (C) 2012, Analog Devices Inc.
 *	Author: Lars-Peter Clausen <lars@metafoo.de>
 */

#ifndef __SOUND_DMAENGINE_PCM_H__
#define __SOUND_DMAENGINE_PCM_H__

#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/dmaengine.h>

/**
 * snd_pcm_substream_to_dma_direction - Get dma_transfer_direction for a PCM
 *   substream
 * @substream: PCM substream
 *
 * Return: DMA transfer direction
 */
static inline enum dma_transfer_direction
snd_pcm_substream_to_dma_direction(const struct snd_pcm_substream *substream)
{
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		return DMA_MEM_TO_DEV;
	else
		return DMA_DEV_TO_MEM;
}

int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
	const struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config);
int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream);
snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream);

int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
	struct dma_chan *chan);
int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream);
int snd_dmaengine_pcm_sync_stop(struct snd_pcm_substream *substream);

int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
	dma_filter_fn filter_fn, void *filter_data);
int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream);

struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
	void *filter_data);
struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream);

/*
 * The DAI supports packed transfers, eg 2 16-bit samples in a 32-bit word.
 * If this flag is set the dmaengine driver won't put any restriction on
 * the supported sample formats and set the DMA transfer size to undefined.
 * The DAI driver is responsible to disable any unsupported formats in it's
 * configuration and catch corner cases that are not already handled in
 * the ALSA core.
 */
#define SND_DMAENGINE_PCM_DAI_FLAG_PACK BIT(0)

/**
 * struct snd_dmaengine_dai_dma_data - DAI DMA configuration data
 * @addr: Address of the DAI data source or destination register.
 * @addr_width: Width of the DAI data source or destination register.
 * @maxburst: Maximum number of words(note: words, as in units of the
 * src_addr_width member, not bytes) that can be send to or received from the
 * DAI in one burst.
 * @filter_data: Custom DMA channel filter data, this will usually be used when
 * requesting the DMA channel.
 * @chan_name: Custom channel name to use when requesting DMA channel.
 * @fifo_size: FIFO size of the DAI controller in bytes
 * @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
 * @peripheral_config: peripheral configuration for programming peripheral
 * for dmaengine transfer
 * @peripheral_size: peripheral configuration buffer size
 */
struct snd_dmaengine_dai_dma_data {
	dma_addr_t addr;
	enum dma_slave_buswidth addr_width;
	u32 maxburst;
	void *filter_data;
	const char *chan_name;
	unsigned int fifo_size;
	unsigned int flags;
	void *peripheral_config;
	size_t peripheral_size;
};

void snd_dmaengine_pcm_set_config_from_dai_data(
	const struct snd_pcm_substream *substream,
	const struct snd_dmaengine_dai_dma_data *dma_data,
	struct dma_slave_config *config);

int snd_dmaengine_pcm_refine_runtime_hwparams(
	struct snd_pcm_substream *substream,
	struct snd_dmaengine_dai_dma_data *dma_data,
	struct snd_pcm_hardware *hw,
	struct dma_chan *chan);

/*
 * Try to request the DMA channel using compat_request_channel or
 * compat_filter_fn if it couldn't be requested through devicetree.
 */
#define SND_DMAENGINE_PCM_FLAG_COMPAT BIT(0)
/*
 * Don't try to request the DMA channels through devicetree. This flag only
 * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well.
 */
#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
/*
 * The PCM is half duplex and the DMA channel is shared between capture and
 * playback.
 */
#define SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX BIT(3)

/**
 * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM
 * @prepare_slave_config: Callback used to fill in the DMA slave_config for a
 *   PCM substream. Will be called from the PCM drivers hwparams callback.
 * @compat_request_channel: Callback to request a DMA channel for platforms
 *   which do not use devicetree.
 * @process: Callback used to apply processing on samples transferred from/to
 *   user space.
 * @compat_filter_fn: Will be used as the filter function when requesting a
 *  channel for platforms which do not use devicetree. The filter parameter
 *  will be the DAI's DMA data.
 * @dma_dev: If set, request DMA channel on this device rather than the DAI
 *  device.
 * @chan_names: If set, these custom DMA channel names will be requested at
 *  registration time.
 * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM.
 * @prealloc_buffer_size: Size of the preallocated audio buffer.
 *
 * Note: If both compat_request_channel and compat_filter_fn are set
 * compat_request_channel will be used to request the channel and
 * compat_filter_fn will be ignored. Otherwise the channel will be requested
 * using dma_request_channel with compat_filter_fn as the filter function.
 */
struct snd_dmaengine_pcm_config {
	int (*prepare_slave_config)(struct snd_pcm_substream *substream,
			struct snd_pcm_hw_params *params,
			struct dma_slave_config *slave_config);
	struct dma_chan *(*compat_request_channel)(
			struct snd_soc_pcm_runtime *rtd,
			struct snd_pcm_substream *substream);
	int (*process)(struct snd_pcm_substream *substream,
		       int channel, unsigned long hwoff,
		       unsigned long bytes);
	dma_filter_fn compat_filter_fn;
	struct device *dma_dev;
	const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];

const struct snd_pcm_hardware *pcm_hardware;
	unsigned int prealloc_buffer_size;
};

int snd_dmaengine_pcm_register(struct device *dev,
	const struct snd_dmaengine_pcm_config *config,
	unsigned int flags);
void snd_dmaengine_pcm_unregister(struct device *dev);

int devm_snd_dmaengine_pcm_register(struct device *dev,
	const struct snd_dmaengine_pcm_config *config,
	unsigned int flags);

int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct dma_slave_config *slave_config);

#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm"

struct dmaengine_pcm {
	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
	const struct snd_dmaengine_pcm_config *config;
	struct snd_soc_component component;
	unsigned int flags;
};

static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)
{
	return container_of(p, struct dmaengine_pcm, component);
}
#endif