sound/soc/sdw_utils/soc_sdw_es9356.c

Source file repositories/reference/linux-study-clean/sound/soc/sdw_utils/soc_sdw_es9356.c

File Facts

System
Linux kernel
Corpus path
sound/soc/sdw_utils/soc_sdw_es9356.c
Extension
.c
Size
6213 bytes
Lines
231
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: exported/initcall integration point
Status
integration 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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
// Based on sof_sdw_rt5682.c
// This file incorporates work covered by the following copyright notice:
// Copyright (c) 2023 Intel Corporation
// Copyright (c) 2024 Advanced Micro Devices, Inc.
// Copyright (c) 2025 Everest Semiconductor Co., Ltd

/*
 *  soc_sdw_es9356 - Helpers to handle ES9356 from generic machine driver
 */

#include <linux/device.h>
#include <linux/errno.h>
#include <linux/input.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include <sound/control.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <sound/soc_sdw_utils.h>

/*
 * Note this MUST be called before snd_soc_register_card(), so that the props
 * are in place before the codec component driver's probe function parses them.
 */
static int es9356_add_codec_device_props(struct device *sdw_dev, unsigned long quirk)
{
	struct property_entry props[SOC_SDW_MAX_NO_PROPS] = {};
	struct fwnode_handle *fwnode;
	int ret;

	if (!SOC_SDW_JACK_JDSRC(quirk))
		return 0;
	props[0] = PROPERTY_ENTRY_U32("everest,jd-src", SOC_SDW_JACK_JDSRC(quirk));

	fwnode = fwnode_create_software_node(props, NULL);
	if (IS_ERR(fwnode))
		return PTR_ERR(fwnode);

	ret = device_add_software_node(sdw_dev, to_software_node(fwnode));

	fwnode_handle_put(fwnode);

	return ret;
}

static const struct snd_soc_dapm_route es9356_map[] = {
	/* Headphones */
	{ "Headphone", NULL, "es9356 HP" },
	{ "es9356 MIC1", NULL, "Headset Mic" },
};

static const struct snd_soc_dapm_route es9356_spk_map[] = {
	/* Speaker */
	{ "Speaker", NULL, "es9356 SPK" },
};

static const struct snd_soc_dapm_route es9356_dmic_map[] = {
	/* DMIC */
	{ "es9356 PDM_DIN", NULL, "DMIC" },
};

static struct snd_soc_jack_pin es9356_jack_pins[] = {
	{
		.pin    = "Headphone",
		.mask   = SND_JACK_HEADPHONE,
	},
	{
		.pin    = "Headset Mic",
		.mask   = SND_JACK_MICROPHONE,
	},
};

int asoc_sdw_es9356_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
{
	struct snd_soc_card *card = rtd->card;
	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
	int ret;

	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
					  "%s spk:es9356-spk",
					  card->components);
	if (!card->components)
		return -ENOMEM;

	ret = snd_soc_dapm_add_routes(dapm, es9356_spk_map,
				      ARRAY_SIZE(es9356_spk_map));
	if (ret)

Annotation

Implementation Notes