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ASoC: mediatek: mt8365: Add PCM DAI support
Add Pulse Code Modulation Device Audio Interface support for MT8365 SoC. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com> Link: https://patch.msgid.link/20240226-audio-i350-v7-9-6518d953a141@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexandre Mergnat
Mark Brown
parent
1c50ec75ce
commit
5097c0c863
293
sound/soc/mediatek/mt8365/mt8365-dai-pcm.c
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293
sound/soc/mediatek/mt8365/mt8365-dai-pcm.c
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// SPDX-License-Identifier: GPL-2.0
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/*
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* MediaTek 8365 ALSA SoC Audio DAI PCM Control
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*
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* Copyright (c) 2024 MediaTek Inc.
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* Authors: Jia Zeng <jia.zeng@mediatek.com>
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* Alexandre Mergnat <amergnat@baylibre.com>
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*/
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#include <linux/bitops.h>
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#include <linux/regmap.h>
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#include <sound/pcm_params.h>
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#include "mt8365-afe-clk.h"
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#include "mt8365-afe-common.h"
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struct mt8365_pcm_intf_data {
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bool slave_mode;
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bool lrck_inv;
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bool bck_inv;
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unsigned int format;
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};
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/* DAI Drivers */
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static void mt8365_dai_enable_pcm1(struct mtk_base_afe *afe)
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{
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regmap_update_bits(afe->regmap, PCM_INTF_CON1,
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PCM_INTF_CON1_EN, PCM_INTF_CON1_EN);
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}
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static void mt8365_dai_disable_pcm1(struct mtk_base_afe *afe)
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{
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regmap_update_bits(afe->regmap, PCM_INTF_CON1,
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PCM_INTF_CON1_EN, 0x0);
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}
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static int mt8365_dai_configure_pcm1(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
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struct mt8365_afe_private *afe_priv = afe->platform_priv;
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struct mt8365_pcm_intf_data *pcm_priv = afe_priv->dai_priv[MT8365_AFE_IO_PCM1];
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bool slave_mode = pcm_priv->slave_mode;
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bool lrck_inv = pcm_priv->lrck_inv;
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bool bck_inv = pcm_priv->bck_inv;
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unsigned int fmt = pcm_priv->format;
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unsigned int bit_width = dai->sample_bits;
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unsigned int val = 0;
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if (!slave_mode) {
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val |= PCM_INTF_CON1_MASTER_MODE |
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PCM_INTF_CON1_BYPASS_ASRC;
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if (lrck_inv)
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val |= PCM_INTF_CON1_SYNC_OUT_INV;
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if (bck_inv)
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val |= PCM_INTF_CON1_BCLK_OUT_INV;
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} else {
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val |= PCM_INTF_CON1_SLAVE_MODE;
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if (lrck_inv)
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val |= PCM_INTF_CON1_SYNC_IN_INV;
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if (bck_inv)
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val |= PCM_INTF_CON1_BCLK_IN_INV;
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/* TODO: add asrc setting */
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}
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val |= FIELD_PREP(PCM_INTF_CON1_FORMAT_MASK, fmt);
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if (fmt == MT8365_PCM_FORMAT_PCMA ||
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fmt == MT8365_PCM_FORMAT_PCMB)
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val |= PCM_INTF_CON1_SYNC_LEN(1);
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else
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val |= PCM_INTF_CON1_SYNC_LEN(bit_width);
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switch (substream->runtime->rate) {
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case 48000:
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val |= PCM_INTF_CON1_FS_48K;
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break;
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case 32000:
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val |= PCM_INTF_CON1_FS_32K;
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break;
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case 16000:
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val |= PCM_INTF_CON1_FS_16K;
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break;
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case 8000:
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val |= PCM_INTF_CON1_FS_8K;
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break;
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default:
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return -EINVAL;
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}
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if (bit_width > 16)
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val |= PCM_INTF_CON1_24BIT | PCM_INTF_CON1_64BCK;
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else
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val |= PCM_INTF_CON1_16BIT | PCM_INTF_CON1_32BCK;
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val |= PCM_INTF_CON1_EXT_MODEM;
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regmap_update_bits(afe->regmap, PCM_INTF_CON1,
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PCM_INTF_CON1_CONFIG_MASK, val);
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return 0;
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}
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static int mt8365_dai_pcm1_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
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if (snd_soc_dai_active(dai))
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return 0;
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mt8365_afe_enable_main_clk(afe);
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return 0;
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}
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static void mt8365_dai_pcm1_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
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if (snd_soc_dai_active(dai))
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return;
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mt8365_dai_disable_pcm1(afe);
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mt8365_afe_disable_main_clk(afe);
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}
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static int mt8365_dai_pcm1_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
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int ret;
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if ((snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_PLAYBACK) +
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snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_CAPTURE)) > 1) {
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dev_info(afe->dev, "%s '%s' active(%u-%u) already\n",
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__func__, snd_pcm_stream_str(substream),
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snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_PLAYBACK),
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snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_CAPTURE));
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return 0;
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}
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ret = mt8365_dai_configure_pcm1(substream, dai);
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if (ret)
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return ret;
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mt8365_dai_enable_pcm1(afe);
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return 0;
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}
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static int mt8365_dai_pcm1_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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{
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struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
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struct mt8365_afe_private *afe_priv = afe->platform_priv;
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struct mt8365_pcm_intf_data *pcm_priv = afe_priv->dai_priv[MT8365_AFE_IO_PCM1];
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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pcm_priv->format = MT8365_PCM_FORMAT_I2S;
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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pcm_priv->bck_inv = false;
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pcm_priv->lrck_inv = false;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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pcm_priv->bck_inv = false;
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pcm_priv->lrck_inv = true;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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pcm_priv->bck_inv = true;
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pcm_priv->lrck_inv = false;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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pcm_priv->bck_inv = true;
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pcm_priv->lrck_inv = true;
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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pcm_priv->slave_mode = true;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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pcm_priv->slave_mode = false;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct snd_soc_dai_ops mt8365_dai_pcm1_ops = {
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.startup = mt8365_dai_pcm1_startup,
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.shutdown = mt8365_dai_pcm1_shutdown,
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.prepare = mt8365_dai_pcm1_prepare,
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.set_fmt = mt8365_dai_pcm1_set_fmt,
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};
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static struct snd_soc_dai_driver mtk_dai_pcm_driver[] = {
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{
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.name = "PCM1",
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.id = MT8365_AFE_IO_PCM1,
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.playback = {
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.stream_name = "PCM1 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000 |
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SNDRV_PCM_RATE_16000 |
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SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S32_LE,
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},
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.capture = {
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.stream_name = "PCM1 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000 |
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SNDRV_PCM_RATE_16000 |
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SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S32_LE,
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},
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.ops = &mt8365_dai_pcm1_ops,
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.symmetric_rate = 1,
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.symmetric_sample_bits = 1,
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}
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};
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/* DAI widget */
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static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("PCM1 Out"),
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SND_SOC_DAPM_INPUT("PCM1 In"),
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};
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/* DAI route */
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static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = {
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{"PCM1 Playback", NULL, "O07"},
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{"PCM1 Playback", NULL, "O08"},
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{"PCM1 Out", NULL, "PCM1 Playback"},
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{"I09", NULL, "PCM1 Capture"},
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{"I22", NULL, "PCM1 Capture"},
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{"PCM1 Capture", NULL, "PCM1 In"},
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};
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static int init_pcmif_priv_data(struct mtk_base_afe *afe)
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{
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struct mt8365_afe_private *afe_priv = afe->platform_priv;
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struct mt8365_pcm_intf_data *pcmif_priv;
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pcmif_priv = devm_kzalloc(afe->dev, sizeof(struct mt8365_pcm_intf_data),
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GFP_KERNEL);
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if (!pcmif_priv)
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return -ENOMEM;
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afe_priv->dai_priv[MT8365_AFE_IO_PCM1] = pcmif_priv;
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return 0;
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}
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int mt8365_dai_pcm_register(struct mtk_base_afe *afe)
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{
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struct mtk_base_afe_dai *dai;
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dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
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if (!dai)
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return -ENOMEM;
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list_add(&dai->list, &afe->sub_dais);
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dai->dai_drivers = mtk_dai_pcm_driver;
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dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_pcm_driver);
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dai->dapm_widgets = mtk_dai_pcm_widgets;
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dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_pcm_widgets);
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dai->dapm_routes = mtk_dai_pcm_routes;
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dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_pcm_routes);
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return init_pcmif_priv_data(afe);
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}
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