Add Pulse Code Modulation Device Audio Interface support for MT8365 SoC. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx> --- sound/soc/mediatek/mt8365/mt8365-dai-pcm.c | 293 +++++++++++++++++++++++++++++ 1 file changed, 293 insertions(+) diff --git a/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c b/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c new file mode 100644 index 000000000000..6be991d53333 --- /dev/null +++ b/sound/soc/mediatek/mt8365/mt8365-dai-pcm.c @@ -0,0 +1,293 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mediatek 8365 ALSA SoC Audio DAI PCM Control + * + * Copyright (c) 2024 MediaTek Inc. + * Authors: Jia Zeng <jia.zeng@xxxxxxxxxxxx> + * Alexandre Mergnat <amergnat@xxxxxxxxxxxx> + */ + +#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->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_playback(dai) + + snd_soc_dai_stream_active_capture(dai)) > 1) { + dev_info(afe->dev, "%s '%s' active(%u-%u) already\n", + __func__, snd_pcm_stream_str(substream), + snd_soc_dai_stream_active_playback(dai), + snd_soc_dai_stream_active_capture(dai)); + 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); +} -- 2.25.1