1// SPDX-License-Identifier: GPL-2.0-only
  2// Copyright (c) 2020 Intel Corporation
  3//
  4// sof_sdw_maxim - Helpers to handle maxim codecs
  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 int maxim_part_id;
 17#define SOF_SDW_PART_ID_MAX98363 0x8363
 18#define SOF_SDW_PART_ID_MAX98373 0x8373
 19
 20static const struct snd_soc_dapm_widget maxim_widgets[] = {
 21	SND_SOC_DAPM_SPK("Left Spk", NULL),
 22	SND_SOC_DAPM_SPK("Right Spk", NULL),
 23};
 24
 25static const struct snd_kcontrol_new maxim_controls[] = {
 26	SOC_DAPM_PIN_SWITCH("Left Spk"),
 27	SOC_DAPM_PIN_SWITCH("Right Spk"),
 28};
 29
 30static int spk_init(struct snd_soc_pcm_runtime *rtd)
 31{
 32	struct snd_soc_card *card = rtd->card;
 33	int ret;
 34
 35	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 36					  "%s spk:mx%04x",
 37					  card->components, maxim_part_id);
 38	if (!card->components)
 39		return -ENOMEM;
 40
 41	dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
 42		card->components);
 43
 44	ret = snd_soc_add_card_controls(card, maxim_controls,
 45					ARRAY_SIZE(maxim_controls));
 46	if (ret) {
 47		dev_err(card->dev, "mx%04x ctrls addition failed: %d\n", maxim_part_id, ret);
 48		return ret;
 49	}
 50
 51	ret = snd_soc_dapm_new_controls(&card->dapm, maxim_widgets,
 52					ARRAY_SIZE(maxim_widgets));
 53	if (ret) {
 54		dev_err(card->dev, "mx%04x widgets addition failed: %d\n", maxim_part_id, ret);
 55		return ret;
 56	}
 57
 58	ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
 59	if (ret)
 60		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
 61
 62	return ret;
 63}
 64
 65static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
 66{
 67	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 68	struct snd_soc_dai *codec_dai;
 69	struct snd_soc_dai *cpu_dai;
 70	int ret;
 71	int j;
 72
 73	/* set spk pin by playback only */
 74	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 75		return 0;
 76
 77	cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 78	for_each_rtd_codec_dais(rtd, j, codec_dai) {
 79		struct snd_soc_dapm_context *dapm =
 80				snd_soc_component_get_dapm(cpu_dai->component);
 81		char pin_name[16];
 82
 83		snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
 84			 codec_dai->component->name_prefix);
 85
 86		if (enable)
 87			ret = snd_soc_dapm_enable_pin(dapm, pin_name);
 88		else
 89			ret = snd_soc_dapm_disable_pin(dapm, pin_name);
 90
 91		if (!ret)
 92			snd_soc_dapm_sync(dapm);
 93	}
 94
 95	return 0;
 96}
 97
 98static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
 99{
100	int ret;
101
102	/* according to soc_pcm_prepare dai link prepare is called first */
103	ret = sdw_prepare(substream);
104	if (ret < 0)
105		return ret;
106
107	return mx8373_enable_spk_pin(substream, true);
108}
109
110static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
111{
112	int ret;
113
114	/* according to soc_pcm_hw_free dai link free is called first */
115	ret = sdw_hw_free(substream);
116	if (ret < 0)
117		return ret;
118
119	return mx8373_enable_spk_pin(substream, false);
120}
121
122static const struct snd_soc_ops max_98373_sdw_ops = {
123	.startup = sdw_startup,
124	.prepare = mx8373_sdw_prepare,
125	.trigger = sdw_trigger,
126	.hw_params = sdw_hw_params,
127	.hw_free = mx8373_sdw_hw_free,
128	.shutdown = sdw_shutdown,
129};
130
131static int mx8373_sdw_late_probe(struct snd_soc_card *card)
132{
133	struct snd_soc_dapm_context *dapm = &card->dapm;
134
135	/* Disable Left and Right Spk pin after boot */
136	snd_soc_dapm_disable_pin(dapm, "Left Spk");
137	snd_soc_dapm_disable_pin(dapm, "Right Spk");
138	return snd_soc_dapm_sync(dapm);
139}
140
141int sof_sdw_maxim_init(struct snd_soc_card *card,
142		       const struct snd_soc_acpi_link_adr *link,
143		       struct snd_soc_dai_link *dai_links,
144		       struct sof_sdw_codec_info *info,
145		       bool playback)
146{
147	info->amp_num++;
148	if (info->amp_num == 2)
149		dai_links->init = spk_init;
150
151	maxim_part_id = info->part_id;
152	switch (maxim_part_id) {
153	case SOF_SDW_PART_ID_MAX98363:
154		/* Default ops are set in function init_dai_link.
155		 * called as part of function create_sdw_dailink
156		 */
157		break;
158	case SOF_SDW_PART_ID_MAX98373:
159		info->codec_card_late_probe = mx8373_sdw_late_probe;
160		dai_links->ops = &max_98373_sdw_ops;
161		break;
162	default:
163		dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
164		return -EINVAL;
165	}
166	return 0;
167}