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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
ASoC: mediatek: mt8189: support PCM in platform driver
Add mt8189 PCM DAI driver support.
Signed-off-by: Cyril Chao <Cyril.Chao@mediatek.com>
Link: https://patch.msgid.link/20251031073216.8662-7-Cyril.Chao@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
authored by
Cyril Chao
and committed by
Mark Brown
402ff043
9f202872
+332
+332
sound/soc/mediatek/mt8189/mt8189-dai-pcm.c
+332
sound/soc/mediatek/mt8189/mt8189-dai-pcm.c
···
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// SPDX-License-Identifier: GPL-2.0
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/*
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* MediaTek ALSA SoC Audio DAI I2S Control
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*
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* Copyright (c) 2025 MediaTek Inc.
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* Author: Darren Ye <darren.ye@mediatek.com>
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*/
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#include <linux/regmap.h>
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#include <sound/pcm_params.h>
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#include "mt8189-afe-common.h"
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#include "mt8189-interconnection.h"
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#include "mt8189-afe-clk.h"
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enum AUD_TX_LCH_RPT {
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AUD_TX_LCH_RPT_NO_REPEAT,
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AUD_TX_LCH_RPT_REPEAT
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};
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enum AUD_VBT_16K_MODE {
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AUD_VBT_16K_MODE_DISABLE,
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AUD_VBT_16K_MODE_ENABLE
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};
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enum AUD_EXT_MODEM {
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AUD_EXT_MODEM_SELECT_INTERNAL,
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AUD_EXT_MODEM_SELECT_EXTERNAL
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};
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enum AUD_PCM_SYNC_TYPE {
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/* bck sync length = 1 */
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AUD_PCM_ONE_BCK_CYCLE_SYNC,
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/* bck sync length = PCM_INTF_CON1[9:13] */
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AUD_PCM_EXTENDED_BCK_CYCLE_SYNC
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};
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enum AUD_BT_MODE {
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AUD_BT_MODE_DUAL_MIC_ON_TX,
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AUD_BT_MODE_SINGLE_MIC_ON_TX
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};
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enum AUD_PCM_AFIFO_SRC {
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/* slave mode & external modem uses different crystal */
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AUD_PCM_AFIFO_ASRC,
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/* slave mode & external modem uses the same crystal */
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AUD_PCM_AFIFO_AFIFO
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};
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enum AUD_PCM_CLOCK_SOURCE {
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AUD_PCM_CLOCK_MASTER_MODE,
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AUD_PCM_CLOCK_SLAVE_MODE
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};
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enum AUD_PCM_WLEN {
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AUD_PCM_WLEN_PCM_32_BCK_CYCLES,
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AUD_PCM_WLEN_PCM_64_BCK_CYCLES
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};
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enum AUD_PCM_MODE {
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AUD_PCM_MODE_PCM_MODE_8K,
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AUD_PCM_MODE_PCM_MODE_16K,
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AUD_PCM_MODE_PCM_MODE_32K,
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AUD_PCM_MODE_PCM_MODE_48K
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};
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enum AUD_PCM_FMT {
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AUD_PCM_FMT_I2S,
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AUD_PCM_FMT_EIAJ,
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AUD_PCM_FMT_PCM_MODE_A,
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AUD_PCM_FMT_PCM_MODE_B
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};
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enum AUD_BCLK_OUT_INV {
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AUD_BCLK_OUT_INV_NO_INVERSE,
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AUD_BCLK_OUT_INV_INVERSE
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};
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enum AUD_PCM_EN {
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AUD_PCM_EN_DISABLE,
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AUD_PCM_EN_ENABLE
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};
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enum AUD_PCM1_1X_EN_DOMAIN {
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HOPPING_26M,
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APLL,
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SLAVE = 6
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};
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enum AUD_PCM1_1X_EN_SLAVE_MODE {
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PCM0_SLAVE_1X_EN,
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PCM1_SLAVE_1X_EN
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};
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enum {
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PCM_8K,
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PCM_16K = 4,
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PCM_32K = 8,
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PCM_48K = 10
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};
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static unsigned int pcm_1x_rate_transform(struct device *dev,
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unsigned int rate)
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{
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switch (rate) {
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case 8000:
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return PCM_8K;
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case 16000:
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return PCM_16K;
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case 32000:
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return PCM_32K;
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case 48000:
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return PCM_48K;
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default:
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dev_warn(dev, "rate %u invalid, use %d!!!\n",
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rate, PCM_48K);
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return PCM_48K;
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}
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}
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static unsigned int pcm_rate_transform(struct device *dev,
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unsigned int rate)
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{
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switch (rate) {
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case 8000:
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return MTK_AFE_PCM_RATE_8K;
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case 16000:
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return MTK_AFE_PCM_RATE_16K;
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case 32000:
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return MTK_AFE_PCM_RATE_32K;
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case 48000:
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return MTK_AFE_PCM_RATE_48K;
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default:
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dev_warn(dev, "rate %u invalid, use %d\n",
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rate, MTK_AFE_PCM_RATE_48K);
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return MTK_AFE_PCM_RATE_48K;
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}
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}
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/* dai component */
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static const struct snd_kcontrol_new mtk_pcm_0_playback_ch1_mix[] = {
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SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1", AFE_CONN096_0,
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I_ADDA_UL_CH1, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH1", AFE_CONN096_1,
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I_DL2_CH1, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH1", AFE_CONN096_1,
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I_DL_24CH_CH1, 1, 0),
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};
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static const struct snd_kcontrol_new mtk_pcm_0_playback_ch2_mix[] = {
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SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2", AFE_CONN097_0,
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I_ADDA_UL_CH2, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH2", AFE_CONN097_1,
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I_DL2_CH2, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH2", AFE_CONN097_1,
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I_DL_24CH_CH2, 1, 0),
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};
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static const struct snd_kcontrol_new mtk_pcm_0_playback_ch4_mix[] = {
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SOC_DAPM_SINGLE_AUTODISABLE("I2SIN1_CH1", AFE_CONN099_4,
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I_I2SIN1_CH1, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("I2SIN1_CH2", AFE_CONN099_4,
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I_I2SIN1_CH2, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL0_CH1", AFE_CONN099_1,
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I_DL0_CH1, 1, 0),
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SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH1", AFE_CONN099_1,
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I_DL_24CH_CH1, 1, 0),
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};
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static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = {
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/* inter-connections */
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SND_SOC_DAPM_MIXER("PCM_0_PB_CH1", SND_SOC_NOPM, 0, 0,
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mtk_pcm_0_playback_ch1_mix,
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ARRAY_SIZE(mtk_pcm_0_playback_ch1_mix)),
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SND_SOC_DAPM_MIXER("PCM_0_PB_CH2", SND_SOC_NOPM, 0, 0,
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mtk_pcm_0_playback_ch2_mix,
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ARRAY_SIZE(mtk_pcm_0_playback_ch2_mix)),
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SND_SOC_DAPM_MIXER("PCM_0_PB_CH4", SND_SOC_NOPM, 0, 0,
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mtk_pcm_0_playback_ch4_mix,
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ARRAY_SIZE(mtk_pcm_0_playback_ch4_mix)),
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SND_SOC_DAPM_SUPPLY("PCM_0_EN",
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AFE_PCM0_INTF_CON0, PCM0_EN_SFT, 0,
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NULL, 0),
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SND_SOC_DAPM_SUPPLY("PCM0_CG", AUDIO_TOP_CON0, PDN_PCM0_SFT, 1,
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NULL, 0),
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SND_SOC_DAPM_INPUT("AFE_PCM_INPUT"),
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SND_SOC_DAPM_OUTPUT("AFE_PCM_OUTPUT"),
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};
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static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = {
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{"PCM 0 Playback", NULL, "PCM_0_PB_CH1"},
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{"PCM 0 Playback", NULL, "PCM_0_PB_CH2"},
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{"PCM 0 Playback", NULL, "PCM_0_PB_CH4"},
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{"PCM 0 Playback", NULL, "PCM_0_EN"},
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{"PCM 0 Capture", NULL, "PCM_0_EN"},
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{"PCM 0 Playback", NULL, "PCM0_CG"},
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{"PCM 0 Capture", NULL, "PCM0_CG"},
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{"AFE_PCM_OUTPUT", NULL, "PCM 0 Playback"},
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{"PCM 0 Capture", NULL, "AFE_PCM_INPUT"},
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{"PCM_0_PB_CH1", "DL2_CH1", "DL2"},
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{"PCM_0_PB_CH2", "DL2_CH2", "DL2"},
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{"PCM_0_PB_CH4", "DL0_CH1", "DL0"},
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{"PCM_0_PB_CH1", "DL_24CH_CH1", "DL_24CH"},
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{"PCM_0_PB_CH2", "DL_24CH_CH2", "DL_24CH"},
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{"PCM_0_PB_CH4", "DL_24CH_CH1", "DL_24CH"},
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};
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/* dai ops */
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static int mtk_dai_pcm_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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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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unsigned int rate = params_rate(params);
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unsigned int rate_reg = pcm_rate_transform(afe->dev, rate);
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unsigned int x_rate_reg = pcm_1x_rate_transform(afe->dev, rate);
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unsigned int pcm_con0;
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unsigned int pcm_con1;
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unsigned int playback_active = 0;
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unsigned int capture_active = 0;
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struct snd_soc_dapm_widget *playback_widget =
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snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_PLAYBACK);
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struct snd_soc_dapm_widget *capture_widget =
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snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_CAPTURE);
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if (playback_widget)
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playback_active = playback_widget->active;
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if (capture_widget)
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capture_active = capture_widget->active;
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dev_dbg(afe->dev,
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"id %d, stream %d, rate %d, rate_reg %d, active p %d, c %d\n",
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dai->id, substream->stream, rate, rate_reg,
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playback_active, capture_active);
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if (playback_active || capture_active)
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return 0;
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switch (dai->id) {
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case MT8189_DAI_PCM_0:
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pcm_con0 = AUD_BCLK_OUT_INV_NO_INVERSE << PCM0_BCLK_OUT_INV_SFT;
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pcm_con0 |= AUD_TX_LCH_RPT_NO_REPEAT << PCM0_TX_LCH_RPT_SFT;
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pcm_con0 |= AUD_VBT_16K_MODE_DISABLE << PCM0_VBT_16K_MODE_SFT;
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pcm_con0 |= 0 << PCM0_SYNC_LENGTH_SFT;
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pcm_con0 |= AUD_PCM_ONE_BCK_CYCLE_SYNC << PCM0_SYNC_TYPE_SFT;
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pcm_con0 |= AUD_PCM_AFIFO_AFIFO << PCM0_BYP_ASRC_SFT;
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pcm_con0 |= AUD_PCM_CLOCK_MASTER_MODE << PCM0_SLAVE_SFT;
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pcm_con0 |= rate_reg << PCM0_MODE_SFT;
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pcm_con0 |= AUD_PCM_FMT_I2S << PCM0_FMT_SFT;
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pcm_con1 = AUD_EXT_MODEM_SELECT_INTERNAL << PCM0_EXT_MODEM_SFT;
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pcm_con1 |= AUD_BT_MODE_DUAL_MIC_ON_TX << PCM0_BT_MODE_SFT;
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pcm_con1 |= HOPPING_26M << PCM0_1X_EN_DOMAIN_SFT;
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pcm_con1 |= x_rate_reg << PCM0_1X_EN_MODE_SFT;
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regmap_update_bits(afe->regmap, AFE_PCM0_INTF_CON0,
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~(unsigned int)PCM0_EN_MASK_SFT, pcm_con0);
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regmap_update_bits(afe->regmap, AFE_PCM0_INTF_CON1,
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AFE_PCM0_INTF_CON1_MASK_MON_MASK_SFT,
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pcm_con1);
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break;
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default:
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dev_err(afe->dev, "%s(), id %d not support\n",
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__func__, dai->id);
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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 mtk_dai_pcm_ops = {
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.hw_params = mtk_dai_pcm_hw_params,
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};
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/* dai driver */
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#define MTK_PCM_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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#define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
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SNDRV_PCM_FMTBIT_S24_LE |\
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SNDRV_PCM_FMTBIT_S32_LE)
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static struct snd_soc_dai_driver mtk_dai_pcm_driver[] = {
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{
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.name = "PCM 0",
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.id = MT8189_DAI_PCM_0,
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.playback = {
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.stream_name = "PCM 0 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = MTK_PCM_RATES,
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.formats = MTK_PCM_FORMATS,
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},
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.capture = {
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.stream_name = "PCM 0 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = MTK_PCM_RATES,
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.formats = MTK_PCM_FORMATS,
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},
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.ops = &mtk_dai_pcm_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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int mt8189_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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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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list_add(&dai->list, &afe->sub_dais);
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return 0;
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}