sound/soc/soc-utils-test.c

Source file repositories/reference/linux-study-clean/sound/soc/soc-utils-test.c

File Facts

System: Linux kernel
Corpus path: sound/soc/soc-utils-test.c
Extension: .c
Size: 9813 bytes
Lines: 233
Domain: Driver Families
Bucket: sound/soc
Inferred role: Driver Families: implementation source
Status: source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

kunit/test.h
linux/module.h
sound/pcm.h
sound/pcm_params.h
sound/soc.h
uapi/sound/asound.h

Detected Declarations

function test_tdm_params_to_bclk_one
function test_tdm_params_to_bclk
function test_snd_soc_params_to_bclk_one
function test_snd_soc_params_to_bclk

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
// Copyright (C) 2022 Cirrus Logic, Inc. and
//                    Cirrus Logic International Semiconductor Ltd.

#include <kunit/test.h>
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <uapi/sound/asound.h>

static const struct {
	u32 rate;
	snd_pcm_format_t fmt;
	u8 channels;
	u8 tdm_width;
	u8 tdm_slots;
	u8 slot_multiple;
	u32 bclk;
} tdm_params_to_bclk_cases[] = {
	/* rate		fmt	   channels tdm_width tdm_slots slot_multiple bclk */

	/* From params only */
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	0,	  128000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	0,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	0,	  192000 },
	{   8000,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	0,	  384000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	0,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	0,	  512000 },
	{  44100,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	0,	  705600 },
	{  44100,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	0,	 1411200 },
	{  44100,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	0,	 1058400 },
	{  44100,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	0,	 2116800 },
	{  44100,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	0,	 1411200 },
	{  44100,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	0,	 2822400 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	0,	 6144000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	0,	12288000 },
	{ 384000,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	0,	 9216000 },
	{ 384000,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	0,	18432000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	0,	12288000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	0,	24576000 },

	/* I2S from params */
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	2,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	2,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	2,	  384000 },
	{   8000,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	2,	  384000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	2,	  512000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	2,	  512000 },
	{  44100,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	2,	 1411200 },
	{  44100,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	2,	 1411200 },
	{  44100,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	2,	 2116800 },
	{  44100,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	2,	 2116800 },
	{  44100,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	2,	 2822400 },
	{  44100,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	2,	 2822400 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	0,	2,	12288000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	0,	2,	12288000 },
	{ 384000,  SNDRV_PCM_FORMAT_S24_LE, 1,	0,	0,	2,	18432000 },
	{ 384000,  SNDRV_PCM_FORMAT_S24_LE, 2,	0,	0,	2,	18432000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	0,	2,	24576000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	0,	2,	24576000 },

	/* Fixed 8-slot TDM, other values from params */
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	8,	0,	 1024000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	8,	0,	 1024000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 3,	0,	8,	0,	 1024000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 4,	0,	8,	0,	 1024000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	8,	0,	 2048000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	8,	0,	 2048000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 3,	0,	8,	0,	 2048000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 4,	0,	8,	0,	 2048000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,	0,	8,	0,	49152000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,	0,	8,	0,	49152000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 3,	0,	8,	0,	49152000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 4,	0,	8,	0,	49152000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,	0,	8,	0,	98304000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,	0,	8,	0,	98304000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 3,	0,	8,	0,	98304000 },
	{ 384000,  SNDRV_PCM_FORMAT_S32_LE, 4,	0,	8,	0,	98304000 },

	/* Fixed 32-bit TDM, other values from params */
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,	32,	0,	0,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,	32,	0,	0,	  512000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 3,	32,	0,	0,	  768000 },
	{   8000,  SNDRV_PCM_FORMAT_S16_LE, 4,	32,	0,	0,	 1024000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,	32,	0,	0,	  256000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,	32,	0,	0,	  512000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 3,	32,	0,	0,	  768000 },
	{   8000,  SNDRV_PCM_FORMAT_S32_LE, 4,	32,	0,	0,	 1024000 },
	{ 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,	32,	0,	0,	12288000 },

Annotation

Immediate include surface: `kunit/test.h`, `linux/module.h`, `sound/pcm.h`, `sound/pcm_params.h`, `sound/soc.h`, `uapi/sound/asound.h`.
Detected declarations: `function test_tdm_params_to_bclk_one`, `function test_tdm_params_to_bclk`, `function test_snd_soc_params_to_bclk_one`, `function test_snd_soc_params_to_bclk`.
Atlas domain: Driver Families / sound/soc.
Implementation status: source implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.