1// SPDX-License-Identifier: GPL-2.0-only
  2// Copyright (c) 2020 Intel Corporation
  3//
  4// sof_sdw_max98373 - Helpers to handle 2x MAX98373
  5// codec devices from generic machine driver
  6
  7#include <linux/device.h>
  8#include <linux/errno.h>
  9#include <sound/control.h>
 10#include <sound/soc.h>
 11#include <sound/soc-acpi.h>
 12#include <sound/soc-dapm.h>
 13#include "sof_sdw_common.h"
 14#include "sof_maxim_common.h"
 15
 16static const struct snd_soc_dapm_widget mx8373_widgets[] = {
 17	SND_SOC_DAPM_SPK("Left Spk", NULL),
 18	SND_SOC_DAPM_SPK("Right Spk", NULL),
 19};
 20
 21static const struct snd_kcontrol_new mx8373_controls[] = {
 22	SOC_DAPM_PIN_SWITCH("Left Spk"),
 23	SOC_DAPM_PIN_SWITCH("Right Spk"),
 24};
 25
 26static int spk_init(struct snd_soc_pcm_runtime *rtd)
 27{
 28	struct snd_soc_card *card = rtd->card;
 29	int ret;
 30
 31	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 32					  "%s spk:mx8373",
 33					  card->components);
 34	if (!card->components)
 35		return -ENOMEM;
 36
 37	ret = snd_soc_add_card_controls(card, mx8373_controls,
 38					ARRAY_SIZE(mx8373_controls));
 39	if (ret) {
 40		dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret);
 41		return ret;
 42	}
 43
 44	ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets,
 45					ARRAY_SIZE(mx8373_widgets));
 46	if (ret) {
 47		dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret);
 48		return ret;
 49	}
 50
 51	ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
 52	if (ret)
 53		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
 54
 55	return ret;
 56}
 57
 58static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
 59{
 60	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 61	struct snd_soc_dai *codec_dai;
 62	struct snd_soc_dai *cpu_dai;
 63	int ret;
 64	int j;
 65
 66	/* set spk pin by playback only */
 67	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 68		return 0;
 69
 70	cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 71	for_each_rtd_codec_dais(rtd, j, codec_dai) {
 72		struct snd_soc_dapm_context *dapm =
 73				snd_soc_component_get_dapm(cpu_dai->component);
 74		char pin_name[16];
 75
 76		snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
 77			 codec_dai->component->name_prefix);
 78
 79		if (enable)
 80			ret = snd_soc_dapm_enable_pin(dapm, pin_name);
 81		else
 82			ret = snd_soc_dapm_disable_pin(dapm, pin_name);
 83
 84		if (!ret)
 85			snd_soc_dapm_sync(dapm);
 86	}
 87
 88	return 0;
 89}
 90
 91static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
 92{
 93	int ret = 0;
 94
 95	/* according to soc_pcm_prepare dai link prepare is called first */
 96	ret = sdw_prepare(substream);
 97	if (ret < 0)
 98		return ret;
 99
100	return mx8373_enable_spk_pin(substream, true);
101}
102
103static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
104{
105	int ret = 0;
106
107	/* according to soc_pcm_hw_free dai link free is called first */
108	ret = sdw_hw_free(substream);
109	if (ret < 0)
110		return ret;
111
112	return mx8373_enable_spk_pin(substream, false);
113}
114
115static const struct snd_soc_ops max_98373_sdw_ops = {
116	.startup = sdw_startup,
117	.prepare = mx8373_sdw_prepare,
118	.trigger = sdw_trigger,
119	.hw_free = mx8373_sdw_hw_free,
120	.shutdown = sdw_shutdown,
121};
122
123int sof_sdw_mx8373_init(const struct snd_soc_acpi_link_adr *link,
124			struct snd_soc_dai_link *dai_links,
125			struct sof_sdw_codec_info *info,
126			bool playback)
127{
128	info->amp_num++;
129	if (info->amp_num == 2)
130		dai_links->init = spk_init;
131
132	info->late_probe = true;
133
134	dai_links->ops = &max_98373_sdw_ops;
135
136	return 0;
137}
138
139int sof_sdw_mx8373_late_probe(struct snd_soc_card *card)
140{
141	struct snd_soc_dapm_context *dapm = &card->dapm;
142
143	/* Disable Left and Right Spk pin after boot */
144	snd_soc_dapm_disable_pin(dapm, "Left Spk");
145	snd_soc_dapm_disable_pin(dapm, "Right Spk");
146	return snd_soc_dapm_sync(dapm);
147}