// SPDX-License-Identifier: GPL-2.0
/*
* MediaTek ALSA SoC Audio DAI eTDM Control
*
* Copyright (c) 2023 MediaTek Inc.
* Authors: Vic Wu <[email protected]>
* Maso Huang <[email protected]>
*/
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/regmap.h>
#include <sound/pcm_params.h>
#include "mt7986-afe-common.h"
#include "mt7986-reg.h"
#define HOPPING_CLK 0
#define APLL_CLK 1
#define MTK_DAI_ETDM_FORMAT_I2S 0
#define MTK_DAI_ETDM_FORMAT_DSPA 4
#define MTK_DAI_ETDM_FORMAT_DSPB 5
enum {
MTK_ETDM_RATE_8K = 0,
MTK_ETDM_RATE_12K = 1,
MTK_ETDM_RATE_16K = 2,
MTK_ETDM_RATE_24K = 3,
MTK_ETDM_RATE_32K = 4,
MTK_ETDM_RATE_48K = 5,
MTK_ETDM_RATE_96K = 7,
MTK_ETDM_RATE_192K = 9,
MTK_ETDM_RATE_11K = 16,
MTK_ETDM_RATE_22K = 17,
MTK_ETDM_RATE_44K = 18,
MTK_ETDM_RATE_88K = 19,
MTK_ETDM_RATE_176K = 20,
};
struct mtk_dai_etdm_priv {
bool bck_inv;
bool lrck_inv;
bool slave_mode;
unsigned int format;
};
static unsigned int mt7986_etdm_rate_transform(struct device *dev, unsigned int rate)
{
switch (rate) {
case 8000:
return MTK_ETDM_RATE_8K;
case 11025:
return MTK_ETDM_RATE_11K;
case 12000:
return MTK_ETDM_RATE_12K;
case 16000:
return MTK_ETDM_RATE_16K;
case 22050:
return MTK_ETDM_RATE_22K;
case 24000:
return MTK_ETDM_RATE_24K;
case 32000:
return MTK_ETDM_RATE_32K;
case 44100:
return MTK_ETDM_RATE_44K;
case 48000:
return MTK_ETDM_RATE_48K;
case 88200:
return MTK_ETDM_RATE_88K;
case 96000:
return MTK_ETDM_RATE_96K;
case 176400:
return MTK_ETDM_RATE_176K;
case 192000:
return MTK_ETDM_RATE_192K;
default:
dev_warn(dev, "%s(), rate %u invalid, using %d!!!\n",
__func__, rate, MTK_ETDM_RATE_48K);
return MTK_ETDM_RATE_48K;
}
}
static int get_etdm_wlen(unsigned int bitwidth)
{
return bitwidth <= 16 ? 16 : 32;
}
/* dai component */
/* interconnection */
static const struct snd_kcontrol_new o124_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("I032_Switch", AFE_CONN124_1, 0, 1, 0),
};
static const struct snd_kcontrol_new o125_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("I033_Switch", AFE_CONN125_1, 1, 1, 0),
};
static const struct snd_soc_dapm_widget mtk_dai_etdm_widgets[] = {
/* DL */
SND_SOC_DAPM_MIXER("I150", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_MIXER("I151", SND_SOC_NOPM, 0, 0, NULL, 0),
/* UL */
SND_SOC_DAPM_MIXER("O124", SND_SOC_NOPM, 0, 0, o124_mix, ARRAY_SIZE(o124_mix)),
SND_SOC_DAPM_MIXER("O125", SND_SOC_NOPM, 0, 0, o125_mix, ARRAY_SIZE(o125_mix)),
};
static const struct snd_soc_dapm_route mtk_dai_etdm_routes[] = {
{"I150", NULL, "ETDM Capture"},
{"I151", NULL, "ETDM Capture"},
{"ETDM Playback", NULL, "O124"},
{"ETDM Playback", NULL, "O125"},
{"O124", "I032_Switch", "I032"},
{"O125", "I033_Switch", "I033"},
};
/* dai ops */
static int mtk_dai_etdm_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct mt7986_afe_private *afe_priv = afe->platform_priv;
int ret;
ret = clk_bulk_prepare_enable(afe_priv->num_clks, afe_priv->clks);
if (ret)
return dev_err_probe(afe->dev, ret, "Failed to enable clocks\n");
regmap_update_bits(afe->regmap, AUDIO_TOP_CON2, CLK_OUT5_PDN_MASK, 0);
regmap_update_bits(afe->regmap, AUDIO_TOP_CON2, CLK_IN5_PDN_MASK, 0);
return 0;
}
static void mtk_dai_etdm_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct mt7986_afe_private *afe_priv = afe->platform_priv;
regmap_update_bits(afe->regmap, AUDIO_TOP_CON2, CLK_OUT5_PDN_MASK,
CLK_OUT5_PDN);
regmap_update_bits(afe->regmap, AUDIO_TOP_CON2, CLK_IN5_PDN_MASK,
CLK_IN5_PDN);
clk_bulk_disable_unprepare(afe_priv->num_clks, afe_priv->clks);
}
static unsigned int get_etdm_ch_fixup(unsigned int channels)
{
if (channels > 16)
return 24;
else if (channels > 8)
return 16;
else if (channels > 4)
return 8;
else if (channels > 2)
return 4;
else
return 2;
}
static int mtk_dai_etdm_config(struct mtk_base_afe *afe,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai,
int stream)
{
struct mt7986_afe_private *afe_priv = afe->platform_priv;
struct mtk_dai_etdm_priv *etdm_data = afe_priv->dai_priv[dai->id];
unsigned int rate = params_rate(params);
unsigned int etdm_rate = mt7986_etdm_rate_transform(afe->dev, rate);
unsigned int afe_rate = mt7986_afe_rate_transform(afe->dev, rate);
unsigned int channels = params_channels(params);
unsigned int bit_width = params_width(params);
unsigned int wlen = get_etdm_wlen(bit_width);
unsigned int val = 0;
unsigned int mask = 0;
dev_dbg(afe->dev, "%s(), stream %d, rate %u, bitwidth %u\n",
__func__, stream, rate, bit_width);
/* CON0 */
mask |= ETDM_BIT_LEN_MASK;
val |= FIELD_PREP(ETDM_BIT_LEN_MASK, bit_width - 1);
mask |= ETDM_WRD_LEN_MASK;
val |= FIELD_PREP(ETDM_WRD_LEN_MASK, wlen - 1);
mask |= ETDM_FMT_MASK;
val |= FIELD_PREP(ETDM_FMT_MASK, etdm_data->format);
mask |= ETDM_CH_NUM_MASK;
val |= FIELD_PREP(ETDM_CH_NUM_MASK, get_etdm_ch_fixup(channels) - 1);
mask |= RELATCH_SRC_MASK;
val |= FIELD_PREP(RELATCH_SRC_MASK, APLL_CLK);
switch (stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
/* set ETDM_OUT5_CON0 */
regmap_update_bits(afe->regmap, ETDM_OUT5_CON0, mask, val);
/* set ETDM_OUT5_CON4 */
regmap_update_bits(afe->regmap, ETDM_OUT5_CON4,
OUT_RELATCH_MASK, OUT_RELATCH(afe_rate));
regmap_update_bits(afe->regmap, ETDM_OUT5_CON4,
OUT_CLK_SRC_MASK, OUT_CLK_SRC(APLL_CLK));
regmap_update_bits(afe->regmap, ETDM_OUT5_CON4,
OUT_SEL_FS_MASK, OUT_SEL_FS(etdm_rate));
/* set ETDM_OUT5_CON5 */
regmap_update_bits(afe->regmap, ETDM_OUT5_CON5,
ETDM_CLK_DIV_MASK, ETDM_CLK_DIV);
break;
case SNDRV_PCM_STREAM_CAPTURE:
/* set ETDM_IN5_CON0 */
regmap_update_bits(afe->regmap, ETDM_IN5_CON0, mask, val);
regmap_update_bits(afe->regmap, ETDM_IN5_CON0,
ETDM_SYNC_MASK, ETDM_SYNC);
/* set ETDM_IN5_CON2 */
regmap_update_bits(afe->regmap, ETDM_IN5_CON2,
IN_CLK_SRC_MASK, IN_CLK_SRC(APLL_CLK));
/* set ETDM_IN5_CON3 */
regmap_update_bits(afe->regmap, ETDM_IN5_CON3,
IN_SEL_FS_MASK, IN_SEL_FS(etdm_rate));
/* set ETDM_IN5_CON4 */
regmap_update_bits(afe->regmap, ETDM_IN5_CON4,
IN_RELATCH_MASK, IN_RELATCH(afe_rate));
break;
default:
break;
}
return 0;
}
static int mtk_dai_etdm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
unsigned int rate = params_rate(params);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
switch (rate) {
case 8000:
case 12000:
case 16000:
case 24000:
case 32000:
case 48000:
case 96000:
case 192000:
mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
return 0;
default:
dev_err(afe->dev,
"Sample rate %d invalid. Supported rates: 8/12/16/24/32/48/96/192 kHz\n",
rate);
return -EINVAL;
}
}
static int mtk_dai_etdm_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
dev_dbg(afe->dev, "%s(), cmd %d, dai id %d\n", __func__, cmd, dai->id);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
regmap_update_bits(afe->regmap, ETDM_IN5_CON0, ETDM_EN_MASK,
ETDM_EN);
regmap_update_bits(afe->regmap, ETDM_OUT5_CON0, ETDM_EN_MASK,
ETDM_EN);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
regmap_update_bits(afe->regmap, ETDM_IN5_CON0, ETDM_EN_MASK,
0);
regmap_update_bits(afe->regmap, ETDM_OUT5_CON0, ETDM_EN_MASK,
0);
break;
default:
break;
}
return 0;
}
static int mtk_dai_etdm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct mt7986_afe_private *afe_priv = afe->platform_priv;
struct mtk_dai_etdm_priv *etdm_data;
void *priv_data;
switch (dai->id) {
case MT7986_DAI_ETDM:
break;
default:
dev_warn(afe->dev, "%s(), id %d not support\n",
__func__, dai->id);
return -EINVAL;
}
priv_data = devm_kzalloc(afe->dev, sizeof(struct mtk_dai_etdm_priv),
GFP_KERNEL);
if (!priv_data)
return -ENOMEM;
afe_priv->dai_priv[dai->id] = priv_data;
etdm_data = afe_priv->dai_priv[dai->id];
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
etdm_data->format = MTK_DAI_ETDM_FORMAT_I2S;
break;
case SND_SOC_DAIFMT_DSP_A:
etdm_data->format = MTK_DAI_ETDM_FORMAT_DSPA;
break;
case SND_SOC_DAIFMT_DSP_B:
etdm_data->format = MTK_DAI_ETDM_FORMAT_DSPB;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
etdm_data->bck_inv = false;
etdm_data->lrck_inv = false;
break;
case SND_SOC_DAIFMT_NB_IF:
etdm_data->bck_inv = false;
etdm_data->lrck_inv = true;
break;
case SND_SOC_DAIFMT_IB_NF:
etdm_data->bck_inv = true;
etdm_data->lrck_inv = false;
break;
case SND_SOC_DAIFMT_IB_IF:
etdm_data->bck_inv = true;
etdm_data->lrck_inv = true;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
etdm_data->slave_mode = true;
break;
case SND_SOC_DAIFMT_CBS_CFS:
etdm_data->slave_mode = false;
break;
default:
return -EINVAL;
}
return 0;
}
static const struct snd_soc_dai_ops mtk_dai_etdm_ops = {
.startup = mtk_dai_etdm_startup,
.shutdown = mtk_dai_etdm_shutdown,
.hw_params = mtk_dai_etdm_hw_params,
.trigger = mtk_dai_etdm_trigger,
.set_fmt = mtk_dai_etdm_set_fmt,
};
/* dai driver */
#define MTK_ETDM_RATES (SNDRV_PCM_RATE_8000_48000 |\
SNDRV_PCM_RATE_88200 |\
SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_176400 |\
SNDRV_PCM_RATE_192000)
#define MTK_ETDM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_driver mtk_dai_etdm_driver[] = {
{
.name = "ETDM",
.id = MT7986_DAI_ETDM,
.capture = {
.stream_name = "ETDM Capture",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_ETDM_RATES,
.formats = MTK_ETDM_FORMATS,
},
.playback = {
.stream_name = "ETDM Playback",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_ETDM_RATES,
.formats = MTK_ETDM_FORMATS,
},
.ops = &mtk_dai_etdm_ops,
.symmetric_rate = 1,
.symmetric_sample_bits = 1,
},
};
int mt7986_dai_etdm_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_etdm_driver;
dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_etdm_driver);
dai->dapm_widgets = mtk_dai_etdm_widgets;
dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_etdm_widgets);
dai->dapm_routes = mtk_dai_etdm_routes;
dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_etdm_routes);
return 0;
}
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