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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/soc/sdw_utils/soc_sdw_cs42l42.c
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// SPDX-License-Identifier: GPL-2.0-only

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// This file incorporates work covered by the following copyright notice:

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// Copyright (c) 2023 Intel Corporation

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// Copyright (c) 2024 Advanced Micro Devices, Inc.

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/*

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 *  soc_sdw_cs42l42 - Helpers to handle CS42L42 from generic machine driver

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 */

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#include <linux/device.h>

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#include <linux/errno.h>

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#include <linux/input.h>

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#include <linux/soundwire/sdw.h>

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#include <linux/soundwire/sdw_type.h>

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#include <sound/control.h>

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#include <sound/soc.h>

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#include <sound/soc-acpi.h>

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#include <sound/soc-dapm.h>

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#include <sound/jack.h>

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#include <sound/soc_sdw_utils.h>

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static const struct snd_soc_dapm_route cs42l42_map[] = {

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	/* HP jack connectors - unknown if we have jack detection */

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	{"Headphone", NULL, "cs42l42 HP"},

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	/* other jacks */

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	{"cs42l42 HS", NULL, "Headset Mic"},

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};

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static struct snd_soc_jack_pin cs42l42_jack_pins[] = {

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	{

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		.pin    = "Headphone",

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		.mask   = SND_JACK_HEADPHONE,

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	},

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	{

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		.pin    = "Headset Mic",

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		.mask   = SND_JACK_MICROPHONE,

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	},

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};

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int asoc_sdw_cs42l42_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)

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{

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	struct snd_soc_card *card = rtd->card;

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	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);

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	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);

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	struct snd_soc_component *component;

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	struct snd_soc_jack *jack;

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	int ret;

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	component = dai->component;

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	card->components = devm_kasprintf(card->dev, GFP_KERNEL,

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					  "%s hs:cs42l42",

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					  card->components);

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	if (!card->components)

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		return -ENOMEM;

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	ret = snd_soc_dapm_add_routes(dapm, cs42l42_map,

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				      ARRAY_SIZE(cs42l42_map));

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	if (ret) {

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		dev_err(card->dev, "cs42l42 map addition failed: %d\n", ret);

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		return ret;

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	}

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	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",

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					 SND_JACK_HEADSET | SND_JACK_BTN_0 |

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					 SND_JACK_BTN_1 | SND_JACK_BTN_2 |

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					 SND_JACK_BTN_3,

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					 &ctx->sdw_headset,

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					 cs42l42_jack_pins,

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					 ARRAY_SIZE(cs42l42_jack_pins));

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	if (ret) {

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		dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",

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			ret);

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		return ret;

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	}

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	jack = &ctx->sdw_headset;

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	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);

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	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);

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	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);

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	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);

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	ret = snd_soc_component_set_jack(component, jack, NULL);

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	if (ret)

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		dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",

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			ret);

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	return ret;

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}

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EXPORT_SYMBOL_NS(asoc_sdw_cs42l42_rtd_init, "SND_SOC_SDW_UTILS");

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