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Name	Size	Permission
ac97	[ DIR ]	drwxr-xr-x
sof	[ DIR ]	drwxr-xr-x
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aci.h	2.4 KB	-rw-r--r--
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ak4xxx-adda.h	2.66 KB	-rw-r--r--
alc5623.h	536 B	-rw-r--r--
asequencer.h	2.91 KB	-rw-r--r--
asound.h	590 B	-rw-r--r--
asoundef.h	16.02 KB	-rw-r--r--
compress_driver.h	7.8 KB	-rw-r--r--
control.h	9.73 KB	-rw-r--r--
core.h	15.21 KB	-rw-r--r--
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designware_i2s.h	1.59 KB	-rw-r--r--
dmaengine_pcm.h	6.68 KB	-rw-r--r--
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emux_legacy.h	4.7 KB	-rw-r--r--
emux_synth.h	6.79 KB	-rw-r--r--
es1688.h	2.85 KB	-rw-r--r--
graph_card.h	271 B	-rw-r--r--
gus.h	19.65 KB	-rw-r--r--
hda_chmap.h	2.6 KB	-rw-r--r--
hda_codec.h	17.25 KB	-rw-r--r--
hda_component.h	2.04 KB	-rw-r--r--
hda_hwdep.h	736 B	-rw-r--r--
hda_i915.h	589 B	-rw-r--r--
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hdaudio.h	20.93 KB	-rw-r--r--
hdaudio_ext.h	5.6 KB	-rw-r--r--
hdmi-codec.h	2.94 KB	-rw-r--r--
hwdep.h	1.88 KB	-rw-r--r--
i2c.h	2.79 KB	-rw-r--r--
info.h	7.86 KB	-rw-r--r--
initval.h	2.43 KB	-rw-r--r--
intel-dsp-config.h	869 B	-rw-r--r--
intel-nhlt.h	2.78 KB	-rw-r--r--
jack.h	3.07 KB	-rw-r--r--
l3.h	524 B	-rw-r--r--
madera-pdata.h	1.95 KB	-rw-r--r--
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max98088.h	1.05 KB	-rw-r--r--
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memalloc.h	2.58 KB	-rw-r--r--
minors.h	3.65 KB	-rw-r--r--
mixer_oss.h	1.73 KB	-rw-r--r--
mpu401.h	3.81 KB	-rw-r--r--
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pcm-indirect.h	5.04 KB	-rw-r--r--
pcm.h	51.27 KB	-rw-r--r--
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pcm_iec958.h	597 B	-rw-r--r--
pcm_oss.h	2.01 KB	-rw-r--r--
pcm_params.h	8.66 KB	-rw-r--r--
pt2258.h	513 B	-rw-r--r--
pxa2xx-lib.h	2.14 KB	-rw-r--r--
rawmidi.h	5.74 KB	-rw-r--r--
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sb.h	10.3 KB	-rw-r--r--
sb16_csp.h	2.05 KB	-rw-r--r--
seq_device.h	2.11 KB	-rw-r--r--
seq_kernel.h	3.3 KB	-rw-r--r--
seq_midi_emul.h	6.6 KB	-rw-r--r--
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seq_virmidi.h	2.07 KB	-rw-r--r--
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simple_card.h	529 B	-rw-r--r--
simple_card_utils.h	8.16 KB	-rw-r--r--
snd_wavefront.h	5.57 KB	-rw-r--r--
soc-acpi-intel-match.h	2.03 KB	-rw-r--r--
soc-acpi.h	5.5 KB	-rw-r--r--
soc-card.h	2 KB	-rw-r--r--
soc-component.h	18.93 KB	-rw-r--r--
soc-dai.h	19.07 KB	-rw-r--r--
soc-dapm.h	32.16 KB	-rw-r--r--
soc-dpcm.h	5.19 KB	-rw-r--r--
soc-jack.h	3.73 KB	-rw-r--r--
soc-link.h	1.14 KB	-rw-r--r--
soc-topology.h	5.7 KB	-rw-r--r--
soc.h	46.39 KB	-rw-r--r--
sof.h	2.54 KB	-rw-r--r--
soundfont.h	3.81 KB	-rw-r--r--
spear_dma.h	350 B	-rw-r--r--
spear_spdif.h	345 B	-rw-r--r--
sta32x.h	1015 B	-rw-r--r--
sta350.h	1.44 KB	-rw-r--r--
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tea6330t.h	468 B	-rw-r--r--
timer.h	4.99 KB	-rw-r--r--
tlv.h	1.59 KB	-rw-r--r--
tlv320aic32x4.h	1.29 KB	-rw-r--r--
tlv320aic3x.h	1.74 KB	-rw-r--r--
tlv320dac33-plat.h	574 B	-rw-r--r--
tpa6130a2-plat.h	291 B	-rw-r--r--
uda134x.h	451 B	-rw-r--r--
uda1380.h	335 B	-rw-r--r--
util_mem.h	1.58 KB	-rw-r--r--
vx_core.h	14.7 KB	-rw-r--r--
wavefront.h	18.08 KB	-rw-r--r--
wm0010.h	466 B	-rw-r--r--
wm1250-ev1.h	510 B	-rw-r--r--
wm2000.h	479 B	-rw-r--r--
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wm9081.h	515 B	-rw-r--r--
wm9090.h	634 B	-rw-r--r--
wss.h	7.76 KB	-rw-r--r--

Code Editor : compress_driver.h

/* SPDX-License-Identifier: GPL-2.0
 *
 *  compress_driver.h - compress offload driver definations
 *
 *  Copyright (C) 2011 Intel Corporation
 *  Authors:	Vinod Koul <vinod.koul@linux.intel.com>
 *		Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
 */

#ifndef __COMPRESS_DRIVER_H
#define __COMPRESS_DRIVER_H

#include <linux/types.h>
#include <linux/sched.h>
#include <sound/core.h>
#include <sound/compress_offload.h>
#include <sound/asound.h>
#include <sound/pcm.h>

struct snd_compr_ops;

/**
 * struct snd_compr_runtime: runtime stream description
 * @state: stream state
 * @ops: pointer to DSP callbacks
 * @buffer: pointer to kernel buffer, valid only when not in mmap mode or
 *	DSP doesn't implement copy
 * @buffer_size: size of the above buffer
 * @fragment_size: size of buffer fragment in bytes
 * @fragments: number of such fragments
 * @total_bytes_available: cumulative number of bytes made available in
 *	the ring buffer
 * @total_bytes_transferred: cumulative bytes transferred by offload DSP
 * @sleep: poll sleep
 * @private_data: driver private data pointer
 * @dma_area: virtual buffer address
 * @dma_addr: physical buffer address (not accessible from main CPU)
 * @dma_bytes: size of DMA area
 * @dma_buffer_p: runtime dma buffer pointer
 */
struct snd_compr_runtime {
	snd_pcm_state_t state;
	struct snd_compr_ops *ops;
	void *buffer;
	u64 buffer_size;
	u32 fragment_size;
	u32 fragments;
	u64 total_bytes_available;
	u64 total_bytes_transferred;
	wait_queue_head_t sleep;
	void *private_data;

unsigned char *dma_area;
	dma_addr_t dma_addr;
	size_t dma_bytes;
	struct snd_dma_buffer *dma_buffer_p;
};

/**
 * struct snd_compr_stream: compressed stream
 * @name: device name
 * @ops: pointer to DSP callbacks
 * @runtime: pointer to runtime structure
 * @device: device pointer
 * @error_work: delayed work used when closing the stream due to an error
 * @direction: stream direction, playback/recording
 * @metadata_set: metadata set flag, true when set
 * @next_track: has userspace signal next track transition, true when set
 * @partial_drain: undergoing partial_drain for stream, true when set
 * @pause_in_draining: paused during draining state, true when set
 * @private_data: pointer to DSP private data
 * @dma_buffer: allocated buffer if any
 */
struct snd_compr_stream {
	const char *name;
	struct snd_compr_ops *ops;
	struct snd_compr_runtime *runtime;
	struct snd_compr *device;
	struct delayed_work error_work;
	enum snd_compr_direction direction;
	bool metadata_set;
	bool next_track;
	bool partial_drain;
	bool pause_in_draining;
	void *private_data;
	struct snd_dma_buffer dma_buffer;
};

/**
 * struct snd_compr_ops: compressed path DSP operations
 * @open: Open the compressed stream
 * This callback is mandatory and shall keep dsp ready to receive the stream
 * parameter
 * @free: Close the compressed stream, mandatory
 * @set_params: Sets the compressed stream parameters, mandatory
 * This can be called in during stream creation only to set codec params
 * and the stream properties
 * @get_params: retrieve the codec parameters, mandatory
 * @set_metadata: Set the metadata values for a stream
 * @get_metadata: retrieves the requested metadata values from stream
 * @trigger: Trigger operations like start, pause, resume, drain, stop.
 * This callback is mandatory
 * @pointer: Retrieve current h/w pointer information. Mandatory
 * @copy: Copy the compressed data to/from userspace, Optional
 * Can't be implemented if DSP supports mmap
 * @mmap: DSP mmap method to mmap DSP memory
 * @ack: Ack for DSP when data is written to audio buffer, Optional
 * Not valid if copy is implemented
 * @get_caps: Retrieve DSP capabilities, mandatory
 * @get_codec_caps: Retrieve capabilities for a specific codec, mandatory
 */
struct snd_compr_ops {
	int (*open)(struct snd_compr_stream *stream);
	int (*free)(struct snd_compr_stream *stream);
	int (*set_params)(struct snd_compr_stream *stream,
			struct snd_compr_params *params);
	int (*get_params)(struct snd_compr_stream *stream,
			struct snd_codec *params);
	int (*set_metadata)(struct snd_compr_stream *stream,
			struct snd_compr_metadata *metadata);
	int (*get_metadata)(struct snd_compr_stream *stream,
			struct snd_compr_metadata *metadata);
	int (*trigger)(struct snd_compr_stream *stream, int cmd);
	int (*pointer)(struct snd_compr_stream *stream,
			struct snd_compr_tstamp *tstamp);
	int (*copy)(struct snd_compr_stream *stream, char __user *buf,
		       size_t count);
	int (*mmap)(struct snd_compr_stream *stream,
			struct vm_area_struct *vma);
	int (*ack)(struct snd_compr_stream *stream, size_t bytes);
	int (*get_caps) (struct snd_compr_stream *stream,
			struct snd_compr_caps *caps);
	int (*get_codec_caps) (struct snd_compr_stream *stream,
			struct snd_compr_codec_caps *codec);
};

/**
 * struct snd_compr: Compressed device
 * @name: DSP device name
 * @dev: associated device instance
 * @ops: pointer to DSP callbacks
 * @private_data: pointer to DSP pvt data
 * @card: sound card pointer
 * @direction: Playback or capture direction
 * @lock: device lock
 * @device: device id
 * @use_pause_in_draining: allow pause in draining, true when set
 */
struct snd_compr {
	const char *name;
	struct device dev;
	struct snd_compr_ops *ops;
	void *private_data;
	struct snd_card *card;
	unsigned int direction;
	struct mutex lock;
	int device;
	bool use_pause_in_draining;
#ifdef CONFIG_SND_VERBOSE_PROCFS
	/* private: */
	char id[64];
	struct snd_info_entry *proc_root;
	struct snd_info_entry *proc_info_entry;
#endif
};

/* compress device register APIs */
int snd_compress_new(struct snd_card *card, int device,
			int type, const char *id, struct snd_compr *compr);

/**
 * snd_compr_use_pause_in_draining - Allow pause and resume in draining state
 * @substream: compress substream to set
 *
 * Allow pause and resume in draining state.
 * Only HW driver supports this transition can call this API.
 */
static inline void snd_compr_use_pause_in_draining(struct snd_compr_stream *substream)
{
	substream->device->use_pause_in_draining = true;
}

/* dsp driver callback apis
 * For playback: driver should call snd_compress_fragment_elapsed() to let the
 * framework know that a fragment has been consumed from the ring buffer
 *
 * For recording: we want to know when a frame is available or when
 * at least one frame is available so snd_compress_frame_elapsed()
 * callback should be called when a encodeded frame is available
 */
static inline void snd_compr_fragment_elapsed(struct snd_compr_stream *stream)
{
	wake_up(&stream->runtime->sleep);
}

static inline void snd_compr_drain_notify(struct snd_compr_stream *stream)
{
	if (snd_BUG_ON(!stream))
		return;

/* for partial_drain case we are back to running state on success */
	if (stream->partial_drain) {
		stream->runtime->state = SNDRV_PCM_STATE_RUNNING;
		stream->partial_drain = false; /* clear this flag as well */
	} else {
		stream->runtime->state = SNDRV_PCM_STATE_SETUP;
	}

wake_up(&stream->runtime->sleep);
}

/**
 * snd_compr_set_runtime_buffer - Set the Compress runtime buffer
 * @stream: compress stream to set
 * @bufp: the buffer information, NULL to clear
 *
 * Copy the buffer information to runtime buffer when @bufp is non-NULL.
 * Otherwise it clears the current buffer information.
 */
static inline void
snd_compr_set_runtime_buffer(struct snd_compr_stream *stream,
			     struct snd_dma_buffer *bufp)
{
	struct snd_compr_runtime *runtime = stream->runtime;

if (bufp) {
		runtime->dma_buffer_p = bufp;
		runtime->dma_area = bufp->area;
		runtime->dma_addr = bufp->addr;
		runtime->dma_bytes = bufp->bytes;
	} else {
		runtime->dma_buffer_p = NULL;
		runtime->dma_area = NULL;
		runtime->dma_addr = 0;
		runtime->dma_bytes = 0;
	}
}

int snd_compr_malloc_pages(struct snd_compr_stream *stream, size_t size);
int snd_compr_free_pages(struct snd_compr_stream *stream);

int snd_compr_stop_error(struct snd_compr_stream *stream,
			 snd_pcm_state_t state);

#endif

${this.title}

Code Editor : compress_driver.h