soc_sdw_bridge_cs35l56.c

  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	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
 37	int i, ret;
 38	unsigned int rx_mask = 3; // ASP RX1, RX2
 39	unsigned int tx_mask = 3; // ASP TX1, TX2
 40	struct snd_soc_dai *codec_dai;
 41	struct snd_soc_dai *cpu_dai;
 42
 43	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 44					  "%s spk:cs35l56-bridge",
 45					  card->components);
 46	if (!card->components)
 47		return -ENOMEM;
 48
 49	ret = snd_soc_dapm_new_controls(dapm, bridge_widgets,
 50					ARRAY_SIZE(bridge_widgets));
 51	if (ret) {
 52		dev_err(card->dev, "widgets addition failed: %d\n", ret);
 53		return ret;
 54	}
 55
 56	ret = snd_soc_dapm_add_routes(dapm, bridge_map, ARRAY_SIZE(bridge_map));
 57	if (ret) {
 58		dev_err(card->dev, "map addition failed: %d\n", ret);
 59		return ret;
 60	}
 61
 62	/* 4 x 16-bit sample slots and FSYNC=48000, BCLK=3.072 MHz */
 63	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 64		ret = asoc_sdw_cs35l56_volume_limit(card, codec_dai->component->name_prefix);
 65		if (ret)
 66			return ret;
 67
 68		ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_mask, rx_mask, 4, 16);
 69		if (ret < 0)
 70			return ret;
 71
 72		ret = snd_soc_dai_set_sysclk(codec_dai, 0, 3072000, SND_SOC_CLOCK_IN);
 73		if (ret < 0)
 74			return ret;
 75	}
 76
 77	for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
 78		ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_mask, rx_mask, 4, 16);
 79		if (ret < 0)
 80			return ret;
 81	}
 82
 83	return 0;
 84}
 85
 86static const struct snd_soc_pcm_stream asoc_sdw_bridge_params = {
 87	.formats = SNDRV_PCM_FMTBIT_S16_LE,
 88	.rate_min = 48000,
 89	.rate_max = 48000,
 90	.channels_min = 2,
 91	.channels_max = 2,
 92};
 93
 94SND_SOC_DAILINK_DEFS(asoc_sdw_bridge_dai,
 95		     DAILINK_COMP_ARRAY(COMP_CODEC("cs42l43-codec", "cs42l43-asp")),
 96		     DAILINK_COMP_ARRAY(COMP_CODEC("spi-cs35l56-left", "cs35l56-asp1"),
 97					COMP_CODEC("spi-cs35l56-right", "cs35l56-asp1")),
 98		     DAILINK_COMP_ARRAY(COMP_PLATFORM("cs42l43-codec")));
 99
100static const struct snd_soc_dai_link bridge_dai_template = {
101	.name = "cs42l43-cs35l56",
102	.init = asoc_sdw_bridge_cs35l56_asp_init,
103	.c2c_params = &asoc_sdw_bridge_params,
104	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBC_CFC,
105	SND_SOC_DAILINK_REG(asoc_sdw_bridge_dai),
106};
107
108int asoc_sdw_bridge_cs35l56_count_sidecar(struct snd_soc_card *card,
109					  int *num_dais, int *num_devs)
110{
111	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
112
113	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
114		(*num_dais)++;
115		(*num_devs) += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
116	}
117
118	return 0;
119}
120EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_count_sidecar, "SND_SOC_SDW_UTILS");
121
122int asoc_sdw_bridge_cs35l56_add_sidecar(struct snd_soc_card *card,
123					struct snd_soc_dai_link **dai_links,
124					struct snd_soc_codec_conf **codec_conf)
125{
126	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
127
128	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
129		**dai_links = bridge_dai_template;
130
131		for (int i = 0; i < ARRAY_SIZE(bridge_cs35l56_name_prefixes); i++) {
132			(*codec_conf)->dlc.name = (*dai_links)->codecs[i].name;
133			(*codec_conf)->name_prefix = bridge_cs35l56_name_prefixes[i];
134			(*codec_conf)++;
135		}
136
137		(*dai_links)++;
138	}
139
140	return 0;
141}
142EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_add_sidecar, "SND_SOC_SDW_UTILS");
143
144int asoc_sdw_bridge_cs35l56_spk_init(struct snd_soc_card *card,
145				     struct snd_soc_dai_link *dai_links,
146				     struct asoc_sdw_codec_info *info,
147				     bool playback)
148{
149	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
150
151	if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS)
152		info->amp_num += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
153
154	return 0;
155}
156EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_spk_init, "SND_SOC_SDW_UTILS");