1// SPDX-License-Identifier: GPL-2.0-only
  2// This file incorporates work covered by the following copyright notice:
  3// Copyright (c) 2024 Intel Corporation
  4// Copyright (c) 2024 Advanced Micro Devices, Inc.
  5
  6/*
  7 * soc_sdw_bridge_cs35l56 - codec helper functions for handling CS35L56 Smart AMP
  8 */
  9
 10#include <linux/module.h>
 11#include <linux/platform_device.h>
 12#include <sound/core.h>
 13#include <sound/pcm.h>
 14#include <sound/pcm_params.h>
 15#include <sound/soc.h>
 16#include <sound/soc-acpi.h>
 17#include <sound/soc_sdw_utils.h>
 18
 19static const struct snd_soc_dapm_widget bridge_widgets[] = {
 20	SND_SOC_DAPM_SPK("Bridge Speaker", NULL),
 21};
 22
 23static const struct snd_soc_dapm_route bridge_map[] = {
 24	{"Bridge Speaker", NULL, "AMPL SPK"},
 25	{"Bridge Speaker", NULL, "AMPR SPK"},
 26};
 27
 28static const char * const bridge_cs35l56_name_prefixes[] = {
 29	"AMPL",
 30	"AMPR",
 31};
 32
 33static int asoc_sdw_bridge_cs35l56_asp_init(struct snd_soc_pcm_runtime *rtd)
 34{
 35	struct snd_soc_card *card = rtd->card;
 36	int i, ret;
 37	unsigned int rx_mask = 3; // ASP RX1, RX2
 38	unsigned int tx_mask = 3; // ASP TX1, TX2
 39	struct snd_soc_dai *codec_dai;
 40	struct snd_soc_dai *cpu_dai;
 41
 42	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 43					  "%s spk:cs35l56-bridge",
 44					  card->components);
 45	if (!card->components)
 46		return -ENOMEM;
 47
 48	ret = snd_soc_dapm_new_controls(&card->dapm, bridge_widgets,
 49					ARRAY_SIZE(bridge_widgets));
 50	if (ret) {
 51		dev_err(card->dev, "widgets addition failed: %d\n", ret);
 52		return ret;
 53	}
 54
 55	ret = snd_soc_dapm_add_routes(&card->dapm, bridge_map, ARRAY_SIZE(bridge_map));
 56	if (ret) {
 57		dev_err(card->dev, "map addition failed: %d\n", ret);
 58		return ret;
 59	}
 60
 61	/* 4 x 16-bit sample slots and FSYNC=48000, BCLK=3.072 MHz */
 62	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 63		ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_mask, rx_mask, 4, 16);
 64		if (ret < 0)
 65			return ret;
 66
 67		ret = snd_soc_dai_set_sysclk(codec_dai, 0, 3072000, SND_SOC_CLOCK_IN);
 68		if (ret < 0)
 69			return ret;
 70	}
 71
 72	for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
 73		ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_mask, rx_mask, 4, 16);
 74		if (ret < 0)
 75			return ret;
 76	}
 77
 78	return 0;
 79}
 80
 81static const struct snd_soc_pcm_stream asoc_sdw_bridge_params = {
 82	.formats = SNDRV_PCM_FMTBIT_S16_LE,
 83	.rate_min = 48000,
 84	.rate_max = 48000,
 85	.channels_min = 2,
 86	.channels_max = 2,
 87};
 88
 89SND_SOC_DAILINK_DEFS(asoc_sdw_bridge_dai,
 90		     DAILINK_COMP_ARRAY(COMP_CODEC("cs42l43-codec", "cs42l43-asp")),
 91		     DAILINK_COMP_ARRAY(COMP_CODEC("spi-cs35l56-left", "cs35l56-asp1"),
 92					COMP_CODEC("spi-cs35l56-right", "cs35l56-asp1")),
 93		     DAILINK_COMP_ARRAY(COMP_PLATFORM("cs42l43-codec")));
 94
 95static const struct snd_soc_dai_link bridge_dai_template = {
 96	.name = "cs42l43-cs35l56",
 97	.init = asoc_sdw_bridge_cs35l56_asp_init,
 98	.c2c_params = &asoc_sdw_bridge_params,
 99	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBC_CFC,
100	SND_SOC_DAILINK_REG(asoc_sdw_bridge_dai),
101};
102
103int asoc_sdw_bridge_cs35l56_count_sidecar(struct snd_soc_card *card,
104					  int *num_dais, int *num_devs)
105{
106	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
107
108	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
109		(*num_dais)++;
110		(*num_devs) += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
111	}
112
113	return 0;
114}
115EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_count_sidecar, "SND_SOC_SDW_UTILS");
116
117int asoc_sdw_bridge_cs35l56_add_sidecar(struct snd_soc_card *card,
118					struct snd_soc_dai_link **dai_links,
119					struct snd_soc_codec_conf **codec_conf)
120{
121	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
122
123	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
124		**dai_links = bridge_dai_template;
125
126		for (int i = 0; i < ARRAY_SIZE(bridge_cs35l56_name_prefixes); i++) {
127			(*codec_conf)->dlc.name = (*dai_links)->codecs[i].name;
128			(*codec_conf)->name_prefix = bridge_cs35l56_name_prefixes[i];
129			(*codec_conf)++;
130		}
131
132		(*dai_links)++;
133	}
134
135	return 0;
136}
137EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_add_sidecar, "SND_SOC_SDW_UTILS");
138
139int asoc_sdw_bridge_cs35l56_spk_init(struct snd_soc_card *card,
140				     struct snd_soc_dai_link *dai_links,
141				     struct asoc_sdw_codec_info *info,
142				     bool playback)
143{
144	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
145
146	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS)
147		info->amp_num += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
148
149	return 0;
150}
151EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_spk_init, "SND_SOC_SDW_UTILS");