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Fri, 26 Apr 2024 10:22:50 -0700 (PDT) From: Alexandre Mergnat Date: Fri, 26 Apr 2024 19:22:37 +0200 Subject: [PATCH v4 08/16] ASoC: mediatek: mt8365: Add DMIC DAI support Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240226-audio-i350-v4-8-082b22186d4c@baylibre.com> References: <20240226-audio-i350-v4-0-082b22186d4c@baylibre.com> In-Reply-To: <20240226-audio-i350-v4-0-082b22186d4c@baylibre.com> To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Lee Jones , Flora Fu , Jaroslav Kysela , Takashi Iwai , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Catalin Marinas , Will Deacon , Rob Herring , Krzysztof Kozlowski Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Alexandre Mergnat X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; 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a=openpgp; fpr=231B5ED7F3EAAA700E60FE8B2B46499D7E31D445 Add Digital Micro Device Audio Interface support for MT8365 SoC. Signed-off-by: Alexandre Mergnat --- sound/soc/mediatek/mt8365/mt8365-dai-dmic.c | 347 ++++++++++++++++++++++++++++ 1 file changed, 347 insertions(+) diff --git a/sound/soc/mediatek/mt8365/mt8365-dai-dmic.c b/sound/soc/mediatek/mt8365/mt8365-dai-dmic.c new file mode 100644 index 000000000000..0dd606274d8e --- /dev/null +++ b/sound/soc/mediatek/mt8365/mt8365-dai-dmic.c @@ -0,0 +1,347 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mediatek 8365 ALSA SoC Audio DAI DMIC Control + * + * Copyright (c) 2024 MediaTek Inc. + * Authors: Jia Zeng + * Alexandre Mergnat + */ + +#include +#include +#include +#include "mt8365-afe-clk.h" +#include "mt8365-afe-common.h" + +struct mt8365_dmic_data { + bool two_wire_mode; + unsigned int clk_phase_sel_ch1; + unsigned int clk_phase_sel_ch2; + bool iir_on; + unsigned int irr_mode; + unsigned int dmic_mode; + unsigned int dmic_channel; +}; + +static int get_chan_reg(unsigned int channel) +{ + switch (channel) { + case 8: + fallthrough; + case 7: + return AFE_DMIC3_UL_SRC_CON0; + case 6: + fallthrough; + case 5: + return AFE_DMIC2_UL_SRC_CON0; + case 4: + fallthrough; + case 3: + return AFE_DMIC1_UL_SRC_CON0; + case 2: + fallthrough; + case 1: + return AFE_DMIC0_UL_SRC_CON0; + default: + return -EINVAL; + } +} + +/* DAI Drivers */ + +static void audio_dmic_adda_enable(struct mtk_base_afe *afe) +{ + mt8365_dai_enable_adda_on(afe); + regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0, + AFE_ADDA_UL_DL_DMIC_CLKDIV_ON, + AFE_ADDA_UL_DL_DMIC_CLKDIV_ON); +} + +static void audio_dmic_adda_disable(struct mtk_base_afe *afe) +{ + regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0, + AFE_ADDA_UL_DL_DMIC_CLKDIV_ON, + ~AFE_ADDA_UL_DL_DMIC_CLKDIV_ON); + mt8365_dai_disable_adda_on(afe); +} + +static void mt8365_dai_enable_dmic(struct mtk_base_afe *afe, + struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + struct mt8365_dmic_data *dmic_data = afe_priv->dai_priv[MT8365_AFE_IO_DMIC]; + unsigned int val_mask; + int reg = get_chan_reg(dmic_data->dmic_channel); + + if (reg < 0) + return; + + /* val and mask will be always same to enable */ + val_mask = DMIC_TOP_CON_CH1_ON | + DMIC_TOP_CON_CH2_ON | + DMIC_TOP_CON_SRC_ON; + + regmap_update_bits(afe->regmap, reg, val_mask, val_mask); +} + +static void mt8365_dai_disable_dmic(struct mtk_base_afe *afe, + struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + struct mt8365_dmic_data *dmic_data = afe_priv->dai_priv[MT8365_AFE_IO_DMIC]; + unsigned int mask; + int reg = get_chan_reg(dmic_data->dmic_channel); + + if (reg < 0) + return; + + dev_info(afe->dev, "%s dmic_channel %d\n", + __func__, dmic_data->dmic_channel); + + mask = DMIC_TOP_CON_CH1_ON | + DMIC_TOP_CON_CH2_ON | + DMIC_TOP_CON_SRC_ON | + DMIC_TOP_CON_SDM3_LEVEL_MODE; + + /* Set all masked values to 0 */ + regmap_update_bits(afe->regmap, reg, mask, 0); +} + +static const struct reg_sequence mt8365_dmic_iir_coeff[] = { + { AFE_DMIC0_IIR_COEF_02_01, 0x00000000 }, + { AFE_DMIC0_IIR_COEF_04_03, 0x00003FB8 }, + { AFE_DMIC0_IIR_COEF_06_05, 0x3FB80000 }, + { AFE_DMIC0_IIR_COEF_08_07, 0x3FB80000 }, + { AFE_DMIC0_IIR_COEF_10_09, 0x0000C048 }, + { AFE_DMIC1_IIR_COEF_02_01, 0x00000000 }, + { AFE_DMIC1_IIR_COEF_04_03, 0x00003FB8 }, + { AFE_DMIC1_IIR_COEF_06_05, 0x3FB80000 }, + { AFE_DMIC1_IIR_COEF_08_07, 0x3FB80000 }, + { AFE_DMIC1_IIR_COEF_10_09, 0x0000C048 }, + { AFE_DMIC2_IIR_COEF_02_01, 0x00000000 }, + { AFE_DMIC2_IIR_COEF_04_03, 0x00003FB8 }, + { AFE_DMIC2_IIR_COEF_06_05, 0x3FB80000 }, + { AFE_DMIC2_IIR_COEF_08_07, 0x3FB80000 }, + { AFE_DMIC2_IIR_COEF_10_09, 0x0000C048 }, + { AFE_DMIC3_IIR_COEF_02_01, 0x00000000 }, + { AFE_DMIC3_IIR_COEF_04_03, 0x00003FB8 }, + { AFE_DMIC3_IIR_COEF_06_05, 0x3FB80000 }, + { AFE_DMIC3_IIR_COEF_08_07, 0x3FB80000 }, + { AFE_DMIC3_IIR_COEF_10_09, 0x0000C048 }, +}; + +static int mt8365_dai_load_dmic_iir_coeff_table(struct mtk_base_afe *afe) +{ + return regmap_multi_reg_write(afe->regmap, + mt8365_dmic_iir_coeff, + ARRAY_SIZE(mt8365_dmic_iir_coeff)); +} + +static int mt8365_dai_configure_dmic(struct mtk_base_afe *afe, + struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + struct mt8365_dmic_data *dmic_data = afe_priv->dai_priv[MT8365_AFE_IO_DMIC]; + bool two_wire_mode = dmic_data->two_wire_mode; + unsigned int clk_phase_sel_ch1 = dmic_data->clk_phase_sel_ch1; + unsigned int clk_phase_sel_ch2 = dmic_data->clk_phase_sel_ch2; + unsigned int val = 0; + unsigned int mask = 0; + unsigned int rate = dai->rate; + int reg = get_chan_reg(dai->channels); + + if (reg < 0) + return -EINVAL; + + dmic_data->dmic_channel = dai->channels; + + val |= DMIC_TOP_CON_SDM3_LEVEL_MODE; + mask |= DMIC_TOP_CON_SDM3_LEVEL_MODE; + + if (two_wire_mode) { + val |= DMIC_TOP_CON_TWO_WIRE_MODE; + mask |= DMIC_TOP_CON_TWO_WIRE_MODE; + } else { + val |= FIELD_PREP(DMIC_TOP_CON_CK_PHASE_SEL_CH1, + clk_phase_sel_ch1); + val |= FIELD_PREP(DMIC_TOP_CON_CK_PHASE_SEL_CH2, + clk_phase_sel_ch2); + mask |= DMIC_TOP_CON_CK_PHASE_SEL_CH1; + mask |= DMIC_TOP_CON_CK_PHASE_SEL_CH2; + } + + switch (rate) { + case 48000: + val |= DMIC_TOP_CON_VOICE_MODE_48K; + break; + case 32000: + val |= DMIC_TOP_CON_VOICE_MODE_32K; + break; + case 16000: + val |= DMIC_TOP_CON_VOICE_MODE_16K; + break; + case 8000: + val |= DMIC_TOP_CON_VOICE_MODE_8K; + break; + default: + return -EINVAL; + } + mask |= DMIC_TOP_CON_VOICE_MODE_MASK; + + regmap_update_bits(afe->regmap, reg, DMIC_TOP_CON_CONFIG_MASK, val); + + return 0; +} + +static int mt8365_dai_dmic_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); + + mt8365_afe_enable_main_clk(afe); + + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_DMIC0_ADC); + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_DMIC1_ADC); + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_DMIC2_ADC); + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_DMIC3_ADC); + + audio_dmic_adda_enable(afe); + + return 0; +} + +static void mt8365_dai_dmic_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); + + mt8365_dai_disable_dmic(afe, substream, dai); + audio_dmic_adda_disable(afe); + /* HW Request delay 125us before CG off */ + usleep_range(125, 300); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_DMIC3_ADC); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_DMIC2_ADC); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_DMIC1_ADC); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_DMIC0_ADC); + + mt8365_afe_disable_main_clk(afe); +} + +static int mt8365_dai_dmic_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); + + mt8365_dai_configure_dmic(afe, substream, dai); + mt8365_dai_enable_dmic(afe, substream, dai); + + return 0; +} + +static const struct snd_soc_dai_ops mt8365_afe_dmic_ops = { + .startup = mt8365_dai_dmic_startup, + .shutdown = mt8365_dai_dmic_shutdown, + .prepare = mt8365_dai_dmic_prepare, +}; + +static struct snd_soc_dai_driver mtk_dai_dmic_driver[] = { + { + .name = "DMIC", + .id = MT8365_AFE_IO_DMIC, + .capture = { + .stream_name = "DMIC Capture", + .channels_min = 1, + .channels_max = 8, + .rates = 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_afe_dmic_ops, + } +}; + +/* DAI Controls */ + +/* Values for 48kHz mode */ +static const char * const iir_mode_src[] = { + "SW custom", "5Hz", "10Hz", "25Hz", "50Hz", "65Hz" +}; + +static SOC_ENUM_SINGLE_DECL(iir_mode, AFE_DMIC0_UL_SRC_CON0, 7, iir_mode_src); + +static const struct snd_kcontrol_new mtk_dai_dmic_controls[] = { + SOC_SINGLE("DMIC IIR Switch", AFE_DMIC0_UL_SRC_CON0, DMIC_TOP_CON_IIR_ON, 1, 0), + SOC_ENUM("DMIC IIR Mode", iir_mode), +}; + +/* DAI widget */ + +static const struct snd_soc_dapm_widget mtk_dai_dmic_widgets[] = { + SND_SOC_DAPM_INPUT("DMIC In"), +}; + +/* DAI route */ + +static const struct snd_soc_dapm_route mtk_dai_dmic_routes[] = { + {"I14", NULL, "DMIC Capture"}, + {"I15", NULL, "DMIC Capture"}, + {"I16", NULL, "DMIC Capture"}, + {"I17", NULL, "DMIC Capture"}, + {"I18", NULL, "DMIC Capture"}, + {"I19", NULL, "DMIC Capture"}, + {"I20", NULL, "DMIC Capture"}, + {"I21", NULL, "DMIC Capture"}, + {"DMIC Capture", NULL, "DMIC In"}, +}; + +static int init_dmic_priv_data(struct mtk_base_afe *afe) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + struct mt8365_dmic_data *dmic_priv; + struct device_node *np = afe->dev->of_node; + unsigned int temps[4]; + int ret; + + dmic_priv = devm_kzalloc(afe->dev, sizeof(*dmic_priv), GFP_KERNEL); + if (!dmic_priv) + return -ENOMEM; + + ret = of_property_read_u32_array(np, "mediatek,dmic-mode", + &temps[0], + 1); + if (ret == 0) + dmic_priv->two_wire_mode = !!temps[0]; + + if (!dmic_priv->two_wire_mode) { + dmic_priv->clk_phase_sel_ch1 = 0; + dmic_priv->clk_phase_sel_ch2 = 4; + } + + afe_priv->dai_priv[MT8365_AFE_IO_DMIC] = dmic_priv; + return 0; +} + +int mt8365_dai_dmic_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_dmic_driver; + dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_dmic_driver); + dai->controls = mtk_dai_dmic_controls; + dai->num_controls = ARRAY_SIZE(mtk_dai_dmic_controls); + dai->dapm_widgets = mtk_dai_dmic_widgets; + dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_dmic_widgets); + dai->dapm_routes = mtk_dai_dmic_routes; + dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_dmic_routes); + return init_dmic_priv_data(afe); +}