1// SPDX-License-Identifier: GPL-2.0-only
  2// This file incorporates work covered by the following copyright notice:
  3// Copyright (c) 2020 Intel Corporation
  4// Copyright (c) 2024 Advanced Micro Devices, Inc.
  5//
  6// soc_sdw_maxim - Helpers to handle maxim codecs
  7// codec devices from generic machine driver
  8
  9#include <linux/device.h>
 10#include <linux/errno.h>
 11#include <sound/control.h>
 12#include <sound/soc.h>
 13#include <sound/soc-acpi.h>
 14#include <sound/soc-dapm.h>
 15#include <sound/soc_sdw_utils.h>
 16
 17static int maxim_part_id;
 18#define SOC_SDW_PART_ID_MAX98363 0x8363
 19#define SOC_SDW_PART_ID_MAX98373 0x8373
 20
 21static const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
 22	{ "Left Spk", NULL, "Left BE_OUT" },
 23	{ "Right Spk", NULL, "Right BE_OUT" },
 24};
 25
 26int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
 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:mx%04x",
 33					  card->components, maxim_part_id);
 34	if (!card->components)
 35		return -ENOMEM;
 36
 37	dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
 38		card->components);
 39
 40	ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
 41	if (ret)
 42		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
 43
 44	return ret;
 45}
 46EXPORT_SYMBOL_NS(asoc_sdw_maxim_spk_rtd_init, "SND_SOC_SDW_UTILS");
 47
 48static int asoc_sdw_mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
 49{
 50	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 51	struct snd_soc_dai *codec_dai;
 52	struct snd_soc_dai *cpu_dai;
 53	int ret;
 54	int j;
 55
 56	/* set spk pin by playback only */
 57	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 58		return 0;
 59
 60	cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 61	for_each_rtd_codec_dais(rtd, j, codec_dai) {
 62		struct snd_soc_dapm_context *dapm =
 63				snd_soc_component_get_dapm(cpu_dai->component);
 64		char pin_name[16];
 65
 66		snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
 67			 codec_dai->component->name_prefix);
 68
 69		if (enable)
 70			ret = snd_soc_dapm_enable_pin(dapm, pin_name);
 71		else
 72			ret = snd_soc_dapm_disable_pin(dapm, pin_name);
 73
 74		if (!ret)
 75			snd_soc_dapm_sync(dapm);
 76	}
 77
 78	return 0;
 79}
 80
 81static int asoc_sdw_mx8373_prepare(struct snd_pcm_substream *substream)
 82{
 83	int ret;
 84
 85	/* according to soc_pcm_prepare dai link prepare is called first */
 86	ret = asoc_sdw_prepare(substream);
 87	if (ret < 0)
 88		return ret;
 89
 90	return asoc_sdw_mx8373_enable_spk_pin(substream, true);
 91}
 92
 93static int asoc_sdw_mx8373_hw_free(struct snd_pcm_substream *substream)
 94{
 95	int ret;
 96
 97	/* according to soc_pcm_hw_free dai link free is called first */
 98	ret = asoc_sdw_hw_free(substream);
 99	if (ret < 0)
100		return ret;
101
102	return asoc_sdw_mx8373_enable_spk_pin(substream, false);
103}
104
105static const struct snd_soc_ops max_98373_sdw_ops = {
106	.startup = asoc_sdw_startup,
107	.prepare = asoc_sdw_mx8373_prepare,
108	.trigger = asoc_sdw_trigger,
109	.hw_params = asoc_sdw_hw_params,
110	.hw_free = asoc_sdw_mx8373_hw_free,
111	.shutdown = asoc_sdw_shutdown,
112};
113
114static int asoc_sdw_mx8373_sdw_late_probe(struct snd_soc_card *card)
115{
116	struct snd_soc_dapm_context *dapm = &card->dapm;
117
118	/* Disable Left and Right Spk pin after boot */
119	snd_soc_dapm_disable_pin(dapm, "Left Spk");
120	snd_soc_dapm_disable_pin(dapm, "Right Spk");
121	return snd_soc_dapm_sync(dapm);
122}
123
124int asoc_sdw_maxim_init(struct snd_soc_card *card,
125			struct snd_soc_dai_link *dai_links,
126			struct asoc_sdw_codec_info *info,
127			bool playback)
128{
129	info->amp_num++;
130
131	maxim_part_id = info->part_id;
132	switch (maxim_part_id) {
133	case SOC_SDW_PART_ID_MAX98363:
134		/* Default ops are set in function init_dai_link.
135		 * called as part of function create_sdw_dailink
136		 */
137		break;
138	case SOC_SDW_PART_ID_MAX98373:
139		info->codec_card_late_probe = asoc_sdw_mx8373_sdw_late_probe;
140		dai_links->ops = &max_98373_sdw_ops;
141		break;
142	default:
143		dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
144		return -EINVAL;
145	}
146	return 0;
147}
148EXPORT_SYMBOL_NS(asoc_sdw_maxim_init, "SND_SOC_SDW_UTILS");