--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// MediaTek ALSA SoC Audio DAI I2S Control
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Jiaxin Yu <jiaxin.yu@mediatek.com>
+
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include "mt8186-afe-common.h"
+#include "mt8186-afe-gpio.h"
+#include "mt8186-interconnection.h"
+
+struct mtk_afe_pcm_priv {
+ unsigned int id;
+ unsigned int fmt;
+ unsigned int bck_invert;
+ unsigned int lck_invert;
+};
+
+enum aud_tx_lch_rpt {
+ AUD_TX_LCH_RPT_NO_REPEAT = 0,
+ AUD_TX_LCH_RPT_REPEAT = 1
+};
+
+enum aud_vbt_16k_mode {
+ AUD_VBT_16K_MODE_DISABLE = 0,
+ AUD_VBT_16K_MODE_ENABLE = 1
+};
+
+enum aud_ext_modem {
+ AUD_EXT_MODEM_SELECT_INTERNAL = 0,
+ AUD_EXT_MODEM_SELECT_EXTERNAL = 1
+};
+
+enum aud_pcm_sync_type {
+ /* bck sync length = 1 */
+ AUD_PCM_ONE_BCK_CYCLE_SYNC = 0,
+ /* bck sync length = PCM_INTF_CON1[9:13] */
+ AUD_PCM_EXTENDED_BCK_CYCLE_SYNC = 1
+};
+
+enum aud_bt_mode {
+ AUD_BT_MODE_DUAL_MIC_ON_TX = 0,
+ AUD_BT_MODE_SINGLE_MIC_ON_TX = 1
+};
+
+enum aud_pcm_afifo_src {
+ /* slave mode & external modem uses different crystal */
+ AUD_PCM_AFIFO_ASRC = 0,
+ /* slave mode & external modem uses the same crystal */
+ AUD_PCM_AFIFO_AFIFO = 1
+};
+
+enum aud_pcm_clock_source {
+ AUD_PCM_CLOCK_MASTER_MODE = 0,
+ AUD_PCM_CLOCK_SLAVE_MODE = 1
+};
+
+enum aud_pcm_wlen {
+ AUD_PCM_WLEN_PCM_32_BCK_CYCLES = 0,
+ AUD_PCM_WLEN_PCM_64_BCK_CYCLES = 1
+};
+
+enum aud_pcm_24bit {
+ AUD_PCM_24BIT_PCM_16_BITS = 0,
+ AUD_PCM_24BIT_PCM_24_BITS = 1
+};
+
+enum aud_pcm_mode {
+ AUD_PCM_MODE_PCM_MODE_8K = 0,
+ AUD_PCM_MODE_PCM_MODE_16K = 1,
+ AUD_PCM_MODE_PCM_MODE_32K = 2,
+ AUD_PCM_MODE_PCM_MODE_48K = 3,
+};
+
+enum aud_pcm_fmt {
+ AUD_PCM_FMT_I2S = 0,
+ AUD_PCM_FMT_EIAJ = 1,
+ AUD_PCM_FMT_PCM_MODE_A = 2,
+ AUD_PCM_FMT_PCM_MODE_B = 3
+};
+
+enum aud_bclk_out_inv {
+ AUD_BCLK_OUT_INV_NO_INVERSE = 0,
+ AUD_BCLK_OUT_INV_INVERSE = 1
+};
+
+enum aud_lrclk_out_inv {
+ AUD_LRCLK_OUT_INV_NO_INVERSE = 0,
+ AUD_LRCLK_OUT_INV_INVERSE = 1
+};
+
+enum aud_pcm_en {
+ AUD_PCM_EN_DISABLE = 0,
+ AUD_PCM_EN_ENABLE = 1
+};
+
+/* dai component */
+static const struct snd_kcontrol_new mtk_pcm_1_playback_ch1_mix[] = {
+ SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1 Switch", AFE_CONN7,
+ I_ADDA_UL_CH1, 1, 0),
+ SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH1 Switch", AFE_CONN7,
+ I_DL2_CH1, 1, 0),
+ SOC_DAPM_SINGLE_AUTODISABLE("DL4_CH1 Switch", AFE_CONN7_1,
+ I_DL4_CH1, 1, 0),
+};
+
+static const struct snd_kcontrol_new mtk_pcm_1_playback_ch2_mix[] = {
+ SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2 Switch", AFE_CONN8,
+ I_ADDA_UL_CH2, 1, 0),
+ SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH2 Switch", AFE_CONN8,
+ I_DL2_CH2, 1, 0),
+ SOC_DAPM_SINGLE_AUTODISABLE("DL4_CH2 Switch", AFE_CONN8_1,
+ I_DL4_CH2, 1, 0),
+};
+
+static int mtk_pcm_en_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol,
+ int event)
+{
+ struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+
+ dev_dbg(afe->dev, "%s(), name %s, event 0x%x\n",
+ __func__, w->name, event);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ mt8186_afe_gpio_request(afe->dev, true, MT8186_DAI_PCM, 0);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ mt8186_afe_gpio_request(afe->dev, false, MT8186_DAI_PCM, 0);
+ break;
+ }
+
+ return 0;
+}
+
+/* pcm in/out lpbk */
+static const char * const pcm_lpbk_mux_map[] = {
+ "Normal", "Lpbk",
+};
+
+static int pcm_lpbk_mux_map_value[] = {
+ 0, 1,
+};
+
+static SOC_VALUE_ENUM_SINGLE_AUTODISABLE_DECL(pcm_in_lpbk_mux_map_enum,
+ PCM_INTF_CON1,
+ PCM_I2S_PCM_LOOPBACK_SFT,
+ 1,
+ pcm_lpbk_mux_map,
+ pcm_lpbk_mux_map_value);
+
+static const struct snd_kcontrol_new pcm_in_lpbk_mux_control =
+ SOC_DAPM_ENUM("PCM In Lpbk Select", pcm_in_lpbk_mux_map_enum);
+
+static SOC_VALUE_ENUM_SINGLE_AUTODISABLE_DECL(pcm_out_lpbk_mux_map_enum,
+ PCM_INTF_CON1,
+ PCM_I2S_PCM_LOOPBACK_SFT,
+ 1,
+ pcm_lpbk_mux_map,
+ pcm_lpbk_mux_map_value);
+
+static const struct snd_kcontrol_new pcm_out_lpbk_mux_control =
+ SOC_DAPM_ENUM("PCM Out Lpbk Select", pcm_out_lpbk_mux_map_enum);
+
+static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = {
+ /* inter-connections */
+ SND_SOC_DAPM_MIXER("PCM_1_PB_CH1", SND_SOC_NOPM, 0, 0,
+ mtk_pcm_1_playback_ch1_mix,
+ ARRAY_SIZE(mtk_pcm_1_playback_ch1_mix)),
+ SND_SOC_DAPM_MIXER("PCM_1_PB_CH2", SND_SOC_NOPM, 0, 0,
+ mtk_pcm_1_playback_ch2_mix,
+ ARRAY_SIZE(mtk_pcm_1_playback_ch2_mix)),
+
+ SND_SOC_DAPM_SUPPLY("PCM_1_EN",
+ PCM_INTF_CON1, PCM_EN_SFT, 0,
+ mtk_pcm_en_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+ /* pcm in lpbk */
+ SND_SOC_DAPM_MUX("PCM_In_Lpbk_Mux",
+ SND_SOC_NOPM, 0, 0, &pcm_in_lpbk_mux_control),
+
+ /* pcm out lpbk */
+ SND_SOC_DAPM_MUX("PCM_Out_Lpbk_Mux",
+ SND_SOC_NOPM, 0, 0, &pcm_out_lpbk_mux_control),
+};
+
+static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = {
+ {"PCM 1 Playback", NULL, "PCM_1_PB_CH1"},
+ {"PCM 1 Playback", NULL, "PCM_1_PB_CH2"},
+
+ {"PCM 1 Playback", NULL, "PCM_1_EN"},
+ {"PCM 1 Capture", NULL, "PCM_1_EN"},
+
+ {"PCM_1_PB_CH1", "DL2_CH1 Switch", "DL2"},
+ {"PCM_1_PB_CH2", "DL2_CH2 Switch", "DL2"},
+
+ {"PCM_1_PB_CH1", "DL4_CH1 Switch", "DL4"},
+ {"PCM_1_PB_CH2", "DL4_CH2 Switch", "DL4"},
+
+ /* pcm out lpbk */
+ {"PCM_Out_Lpbk_Mux", "Lpbk", "PCM 1 Playback"},
+ {"I2S0", NULL, "PCM_Out_Lpbk_Mux"},
+
+ /* pcm in lpbk */
+ {"PCM_In_Lpbk_Mux", "Lpbk", "PCM 1 Capture"},
+ {"I2S3", NULL, "PCM_In_Lpbk_Mux"},
+};
+
+/* dai ops */
+static int mtk_dai_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ int pcm_id = dai->id;
+ struct mtk_afe_pcm_priv *pcm_priv = afe_priv->dai_priv[pcm_id];
+ unsigned int rate = params_rate(params);
+ unsigned int rate_reg = mt8186_rate_transform(afe->dev, rate, dai->id);
+ snd_pcm_format_t format = params_format(params);
+ unsigned int data_width =
+ snd_pcm_format_width(format);
+ unsigned int wlen_width =
+ snd_pcm_format_physical_width(format);
+ unsigned int pcm_con = 0;
+
+ dev_dbg(afe->dev, "%s(), id %d, stream %d, widget active p %d, c %d\n",
+ __func__, dai->id, substream->stream, dai->playback_widget->active,
+ dai->capture_widget->active);
+ dev_dbg(afe->dev, "%s(), rate %d, rate_reg %d, data_width %d, wlen_width %d\n",
+ __func__, rate, rate_reg, data_width, wlen_width);
+
+ if (dai->playback_widget->active || dai->capture_widget->active)
+ return 0;
+
+ switch (dai->id) {
+ case MT8186_DAI_PCM:
+ pcm_con |= AUD_TX_LCH_RPT_NO_REPEAT << PCM_TX_LCH_RPT_SFT;
+ pcm_con |= AUD_VBT_16K_MODE_DISABLE << PCM_VBT_16K_MODE_SFT;
+ pcm_con |= AUD_EXT_MODEM_SELECT_EXTERNAL << PCM_EXT_MODEM_SFT;
+ pcm_con |= AUD_PCM_ONE_BCK_CYCLE_SYNC << PCM_SYNC_TYPE_SFT;
+ pcm_con |= AUD_BT_MODE_DUAL_MIC_ON_TX << PCM_BT_MODE_SFT;
+ pcm_con |= AUD_PCM_AFIFO_AFIFO << PCM_BYP_ASRC_SFT;
+ pcm_con |= AUD_PCM_CLOCK_MASTER_MODE << PCM_SLAVE_SFT;
+ pcm_con |= 0 << PCM_SYNC_LENGTH_SFT;
+
+ /* sampling rate */
+ pcm_con |= rate_reg << PCM_MODE_SFT;
+
+ /* format */
+ pcm_con |= pcm_priv->fmt << PCM_FMT_SFT;
+
+ /* 24bit data width */
+ if (data_width > 16)
+ pcm_con |= AUD_PCM_24BIT_PCM_24_BITS << PCM_24BIT_SFT;
+ else
+ pcm_con |= AUD_PCM_24BIT_PCM_16_BITS << PCM_24BIT_SFT;
+
+ /* wlen width*/
+ if (wlen_width > 16)
+ pcm_con |= AUD_PCM_WLEN_PCM_64_BCK_CYCLES << PCM_WLEN_SFT;
+ else
+ pcm_con |= AUD_PCM_WLEN_PCM_32_BCK_CYCLES << PCM_WLEN_SFT;
+
+ /* clock invert */
+ pcm_con |= pcm_priv->lck_invert << PCM_SYNC_OUT_INV_SFT;
+ pcm_con |= pcm_priv->bck_invert << PCM_BCLK_OUT_INV_SFT;
+
+ regmap_update_bits(afe->regmap, PCM_INTF_CON1, 0xfffffffe, pcm_con);
+ break;
+ default:
+ dev_err(afe->dev, "%s(), id %d not support\n", __func__, dai->id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mtk_dai_pcm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct mtk_afe_pcm_priv *pcm_priv = afe_priv->dai_priv[dai->id];
+
+ if (!pcm_priv) {
+ dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__);
+ return -EINVAL;
+ }
+
+ /* DAI mode*/
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ pcm_priv->fmt = AUD_PCM_FMT_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ pcm_priv->fmt = AUD_PCM_FMT_EIAJ;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ pcm_priv->fmt = AUD_PCM_FMT_PCM_MODE_A;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ pcm_priv->fmt = AUD_PCM_FMT_PCM_MODE_B;
+ break;
+ default:
+ pcm_priv->fmt = AUD_PCM_FMT_I2S;
+ }
+
+ /* DAI clock inversion*/
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_NO_INVERSE;
+ pcm_priv->lck_invert = AUD_LRCLK_OUT_INV_NO_INVERSE;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_NO_INVERSE;
+ pcm_priv->lck_invert = AUD_BCLK_OUT_INV_INVERSE;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_INVERSE;
+ pcm_priv->lck_invert = AUD_LRCLK_OUT_INV_NO_INVERSE;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_INVERSE;
+ pcm_priv->lck_invert = AUD_BCLK_OUT_INV_INVERSE;
+ break;
+ default:
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_NO_INVERSE;
+ pcm_priv->lck_invert = AUD_LRCLK_OUT_INV_NO_INVERSE;
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops mtk_dai_pcm_ops = {
+ .hw_params = mtk_dai_pcm_hw_params,
+ .set_fmt = mtk_dai_pcm_set_fmt,
+};
+
+/* dai driver */
+#define MTK_PCM_RATES (SNDRV_PCM_RATE_8000 |\
+ SNDRV_PCM_RATE_16000 |\
+ SNDRV_PCM_RATE_32000 |\
+ SNDRV_PCM_RATE_48000)
+
+#define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S24_LE |\
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver mtk_dai_pcm_driver[] = {
+ {
+ .name = "PCM 1",
+ .id = MT8186_DAI_PCM,
+ .playback = {
+ .stream_name = "PCM 1 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = MTK_PCM_RATES,
+ .formats = MTK_PCM_FORMATS,
+ },
+ .capture = {
+ .stream_name = "PCM 1 Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = MTK_PCM_RATES,
+ .formats = MTK_PCM_FORMATS,
+ },
+ .ops = &mtk_dai_pcm_ops,
+ .symmetric_rate = 1,
+ .symmetric_sample_bits = 1,
+ },
+};
+
+static struct mtk_afe_pcm_priv *init_pcm_priv_data(struct mtk_base_afe *afe)
+{
+ struct mtk_afe_pcm_priv *pcm_priv;
+
+ pcm_priv = devm_kzalloc(afe->dev, sizeof(struct mtk_afe_pcm_priv),
+ GFP_KERNEL);
+ if (!pcm_priv)
+ return NULL;
+
+ pcm_priv->id = MT8186_DAI_PCM;
+ pcm_priv->fmt = AUD_PCM_FMT_I2S;
+ pcm_priv->bck_invert = AUD_BCLK_OUT_INV_NO_INVERSE;
+ pcm_priv->lck_invert = AUD_LRCLK_OUT_INV_NO_INVERSE;
+
+ return pcm_priv;
+}
+
+int mt8186_dai_pcm_register(struct mtk_base_afe *afe)
+{
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct mtk_afe_pcm_priv *pcm_priv;
+ 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);
+
+ pcm_priv = init_pcm_priv_data(afe);
+ if (!pcm_priv)
+ return -ENOMEM;
+
+ afe_priv->dai_priv[MT8186_DAI_PCM] = pcm_priv;
+
+ return 0;
+}
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