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