Il 17/02/22 14:41, Jiaxin Yu ha scritto:
This patch adds mt8186 i2s dai driver
Signed-off-by: Jiaxin Yu <jiaxin.yu@xxxxxxxxxxxx>
---
sound/soc/mediatek/mt8186/mt8186-dai-i2s.c | 1371 ++++++++++++++++++++
1 file changed, 1371 insertions(+)
create mode 100644 sound/soc/mediatek/mt8186/mt8186-dai-i2s.c
diff --git a/sound/soc/mediatek/mt8186/mt8186-dai-i2s.c b/sound/soc/mediatek/mt8186/mt8186-dai-i2s.c
new file mode 100644
index 000000000000..d6db5f6a7315
--- /dev/null
+++ b/sound/soc/mediatek/mt8186/mt8186-dai-i2s.c
@@ -0,0 +1,1371 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// MediaTek ALSA SoC Audio DAI I2S Control
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Jiaxin Yu <jiaxin.yu@xxxxxxxxxxxx>
+
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include "mt8186-afe-clk.h"
+#include "mt8186-afe-common.h"
+#include "mt8186-afe-gpio.h"
+#include "mt8186-interconnection.h"
+
+enum {
+ I2S_FMT_EIAJ = 0,
+ I2S_FMT_I2S = 1,
+};
+
+enum {
+ I2S_WLEN_16_BIT = 0,
+ I2S_WLEN_32_BIT = 1,
+};
+
+enum {
+ I2S_HD_NORMAL = 0,
+ I2S_HD_LOW_JITTER = 1,
+};
+
+enum {
+ I2S1_SEL_O28_O29 = 0,
+ I2S1_SEL_O03_O04 = 1,
+};
+
+enum {
+ I2S_IN_PAD_CONNSYS = 0,
+ I2S_IN_PAD_IO_MUX = 1,
+};
+
+struct mtk_afe_i2s_priv {
+ int id;
+ int rate; /* for determine which apll to use */
+ int low_jitter_en;
+ int master; /* only i2s0 has slave mode*/
+
+ const char *share_property_name;
+ int share_i2s_id;
+
+ int mclk_id;
+ int mclk_rate;
+ int mclk_apll;
+};
+
+static unsigned int get_i2s_wlen(snd_pcm_format_t format)
+{
+ return snd_pcm_format_physical_width(format) <= 16 ?
+ I2S_WLEN_16_BIT : I2S_WLEN_32_BIT;
+}
+
+#define MTK_AFE_I2S0_KCONTROL_NAME "I2S0_HD_Mux"
+#define MTK_AFE_I2S1_KCONTROL_NAME "I2S1_HD_Mux"
+#define MTK_AFE_I2S2_KCONTROL_NAME "I2S2_HD_Mux"
+#define MTK_AFE_I2S3_KCONTROL_NAME "I2S3_HD_Mux"
+#define MTK_AFE_I2S0_SRC_KCONTROL_NAME "I2S0_SRC_Mux"
+
+#define I2S0_HD_EN_W_NAME "I2S0_HD_EN"
+#define I2S1_HD_EN_W_NAME "I2S1_HD_EN"
+#define I2S2_HD_EN_W_NAME "I2S2_HD_EN"
+#define I2S3_HD_EN_W_NAME "I2S3_HD_EN"
+
+#define I2S0_MCLK_EN_W_NAME "I2S0_MCLK_EN"
+#define I2S1_MCLK_EN_W_NAME "I2S1_MCLK_EN"
+#define I2S2_MCLK_EN_W_NAME "I2S2_MCLK_EN"
+#define I2S3_MCLK_EN_W_NAME "I2S3_MCLK_EN"
+
+static int get_i2s_id_by_name(struct mtk_base_afe *afe,
+ const char *name)
+{
+ if (strncmp(name, "I2S0", 4) == 0)
+ return MT8186_DAI_I2S_0;
+ else if (strncmp(name, "I2S1", 4) == 0)
+ return MT8186_DAI_I2S_1;
+ else if (strncmp(name, "I2S2", 4) == 0)
+ return MT8186_DAI_I2S_2;
+ else if (strncmp(name, "I2S3", 4) == 0)
+ return MT8186_DAI_I2S_3;
This is just
return -EINVAL;
(without the "else").
+ else
+ return -EINVAL;
+}
+
+static struct mtk_afe_i2s_priv *get_i2s_priv_by_name(struct mtk_base_afe *afe,
+ const char *name)
+{
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ int dai_id = get_i2s_id_by_name(afe, name);
+
+ if (dai_id < 0)
+ return NULL;
+
+ return afe_priv->dai_priv[dai_id];
+}
+
+/* low jitter control */
+static const char * const mt8186_i2s_hd_str[] = {
+ "Normal", "Low_Jitter"
+};
+
+static const struct soc_enum mt8186_i2s_enum[] = {
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_i2s_hd_str),
+ mt8186_i2s_hd_str),
+};
+
+/* clock source control */
+static const char * const mt8186_i2s_src_str[] = {
+ "Master", "Slave"
+};
+
+static const struct soc_enum mt8186_i2s_src_enum[] = {
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_i2s_src_str),
+ mt8186_i2s_src_str),
+};
+
+static int mt8186_i2s_hd_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ i2s_priv = get_i2s_priv_by_name(afe, kcontrol->id.name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ ucontrol->value.integer.value[0] = i2s_priv->low_jitter_en;
+
+ return 0;
+}
+
+static int mt8186_i2s_hd_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ int hd_en;
+
+ if (ucontrol->value.enumerated.item[0] >= e->items)
+ return -EINVAL;
+
+ hd_en = ucontrol->value.integer.value[0];
+
+ dev_info(afe->dev, "%s(), kcontrol name %s, hd_en %d\n",
+ __func__, kcontrol->id.name, hd_en);
dev_dbg()
+
+ i2s_priv = get_i2s_priv_by_name(afe, kcontrol->id.name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ i2s_priv->low_jitter_en = hd_en;
+
+ return 0;
+}
+
+static int mt8186_i2s_src_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ i2s_priv = get_i2s_priv_by_name(afe, kcontrol->id.name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ ucontrol->value.integer.value[0] = i2s_priv->master;
+
+ return 0;
+}
+
+static int mt8186_i2s_src_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ int clk_src;
+ int dai_id;
+
+ if (ucontrol->value.enumerated.item[0] >= e->items)
+ return -EINVAL;
+
+ clk_src = ucontrol->value.integer.value[0];
+
+ dev_info(afe->dev, "%s(), kcontrol name %s, hd_en %d\n",
+ __func__, kcontrol->id.name, clk_src);
dev_dbg()
+
+ i2s_priv = get_i2s_priv_by_name(afe, kcontrol->id.name);
+ dai_id = get_i2s_id_by_name(afe, kcontrol->id.name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ switch (dai_id) {
+ case MT8186_DAI_I2S_0:
+ regmap_update_bits(afe->regmap, AFE_I2S_CON,
+ I2S_SRC_MASK_SFT,
+ clk_src << I2S_SRC_SFT);
+ break;
+ default:
+ break;
+ }
+
+ i2s_priv->master = clk_src;
+
+ return 0;
+}
+
..snip..
+
+static int mtk_i2s_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);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ i2s_priv = get_i2s_priv_by_name(afe, w->name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ dev_dbg(cmpnt->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, i2s_priv->id, 0);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ mt8186_afe_gpio_request(afe->dev, false, i2s_priv->id, 0);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int mtk_apll_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(cmpnt->dev, "%s(), name %s, event 0x%x\n",
+ __func__, w->name, event);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ if (strcmp(w->name, APLL1_W_NAME) == 0)
+ mt8186_apll1_enable(afe);
+ else
+ mt8186_apll2_enable(afe);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ if (strcmp(w->name, APLL1_W_NAME) == 0)
+ mt8186_apll1_disable(afe);
+ else
+ mt8186_apll2_disable(afe);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int mtk_mclk_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);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n",
+ __func__, w->name, event);
+
+ i2s_priv = get_i2s_priv_by_name(afe, w->name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ mt8186_mck_enable(afe, i2s_priv->mclk_id, i2s_priv->mclk_rate);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ i2s_priv->mclk_rate = 0;
+ mt8186_mck_disable(afe, i2s_priv->mclk_id);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
..snip..
+
+static int mtk_afe_i2s_share_connect(struct snd_soc_dapm_widget *source,
+ struct snd_soc_dapm_widget *sink)
+{
+ struct snd_soc_dapm_widget *w = sink;
+ struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ i2s_priv = get_i2s_priv_by_name(afe, sink->name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
Is this an error? => dev_err()
Is this expected? => dev_dbg()
+ return 0;
+ }
+
+ if (i2s_priv->share_i2s_id < 0)
+ return 0;
+
+ return i2s_priv->share_i2s_id == get_i2s_id_by_name(afe, source->name);
+}
+
+static int mtk_afe_i2s_hd_connect(struct snd_soc_dapm_widget *source,
+ struct snd_soc_dapm_widget *sink)
+{
+ struct snd_soc_dapm_widget *w = sink;
+ struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+ struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
+ struct mtk_afe_i2s_priv *i2s_priv;
+
+ i2s_priv = get_i2s_priv_by_name(afe, sink->name);
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
Is this an error? => dev_err()
Is this expected? => dev_dbg()
Please fix all of the other instances of this.
+ return 0;
+ }
+
+ if (get_i2s_id_by_name(afe, sink->name) ==
+ get_i2s_id_by_name(afe, source->name))
+ return i2s_priv->low_jitter_en;
+
+ /* check if share i2s need hd en */
+ if (i2s_priv->share_i2s_id < 0)
+ return 0;
+
+ if (i2s_priv->share_i2s_id == get_i2s_id_by_name(afe, source->name))
+ return i2s_priv->low_jitter_en;
+
+ return 0;
+}
+
..snip...
+
+/* dai ops */
+static int mtk_dai_connsys_i2s_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);
+ unsigned int rate = params_rate(params);
+ unsigned int rate_reg = mt8186_rate_transform(afe->dev,
+ rate, dai->id);
+ unsigned int i2s_con = 0;
+
+ dev_info(afe->dev, "%s(), id %d, stream %d, rate %d\n",
+ __func__,
+ dai->id,
+ substream->stream,
+ rate);
+
+ /* non-inverse, i2s mode, slave, 16bits, from connsys */
+ i2s_con |= 0 << INV_PAD_CTRL_SFT;
+ i2s_con |= I2S_FMT_I2S << I2S_FMT_SFT;
+ i2s_con |= 1 << I2S_SRC_SFT;
+ i2s_con |= get_i2s_wlen(SNDRV_PCM_FORMAT_S16_LE) << I2S_WLEN_SFT;
+ i2s_con |= 0 << I2SIN_PAD_SEL_SFT;
+ regmap_write(afe->regmap, AFE_CONNSYS_I2S_CON, i2s_con);
+
+ /* use asrc */
+ regmap_update_bits(afe->regmap,
+ AFE_CONNSYS_I2S_CON,
+ I2S_BYPSRC_MASK_SFT,
+ 0x0 << I2S_BYPSRC_SFT);
Zero shifted of a billion bits is still zero.
regmap_update_bits(afe->regmap, AFE_CONNSYS_I2S_CON, I2S_BYPSRC_MASK_SFT, 0);
+
+ /* slave mode, set i2s for asrc */
+ regmap_update_bits(afe->regmap,
+ AFE_CONNSYS_I2S_CON,
+ I2S_MODE_MASK_SFT,
+ rate_reg << I2S_MODE_SFT);
regmap_update_bits(afe->regmap, AFE_CONNSYS_I2S_CON,
I2S_MODE_MASK_SFT, rate_reg << I2S_MODE_SFT);
+
+ if (rate == 44100)
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON3, 0x001B9000);
lower case hex, please, and no leading zeros.
+ else if (rate == 32000)
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON3, 0x140000);
+ else
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON3, 0x001E0000);
+
+ /* Calibration setting */
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON4, 0x00140000);
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON9, 0x00036000);
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON10, 0x0002FC00);
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON6, 0x00007EF4);
+ regmap_write(afe->regmap, AFE_ASRC_2CH_CON5, 0x00FF5986);
ditto.
+
+ /* 0:Stereo 1:Mono */
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON2,
+ CHSET_IS_MONO_MASK_SFT,
+ 0x0 << CHSET_IS_MONO_SFT);
0 << SOMETHING = 0
Also, this fits in one line.
+
+ return 0;
+}
+
+static int mtk_dai_connsys_i2s_trigger(struct snd_pcm_substream *substream,
+ int cmd, 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;
+
+ dev_info(afe->dev, "%s(), cmd %d, stream %d\n",
+ __func__,
+ cmd,
+ substream->stream);
dev_dbg(), also fits in two lines.
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ /* i2s enable */
+ regmap_update_bits(afe->regmap,
+ AFE_CONNSYS_I2S_CON,
+ I2S_EN_MASK_SFT,
+ 0x1 << I2S_EN_SFT);
BIT()
+
+ /* calibrator enable */
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON5,
+ CALI_EN_MASK_SFT,
+ 0x1 << CALI_EN_SFT);
BIT()
+
+ /* asrc enable */
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON0,
+ CON0_CHSET_STR_CLR_MASK_SFT,
+ 0x1 << CON0_CHSET_STR_CLR_SFT);
BIT()
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON0,
+ CON0_ASM_ON_MASK_SFT,
+ 0x1 << CON0_ASM_ON_SFT);
BIT()
+
+ afe_priv->dai_on[dai->id] = true;
+ return 0;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON0,
+ CON0_ASM_ON_MASK_SFT,
+ 0 << CON0_ASM_ON_SFT);
This is zero.
+ regmap_update_bits(afe->regmap,
+ AFE_ASRC_2CH_CON5,
+ CALI_EN_MASK_SFT,
+ 0 << CALI_EN_SFT);
Zero again.
+
+ /* i2s disable */
+ regmap_update_bits(afe->regmap,
+ AFE_CONNSYS_I2S_CON,
+ I2S_EN_MASK_SFT,
+ 0x0 << I2S_EN_SFT);
...and again.
+
+ /* bypass asrc */
+ regmap_update_bits(afe->regmap,
+ AFE_CONNSYS_I2S_CON,
+ I2S_BYPSRC_MASK_SFT,
+ 0x1 << I2S_BYPSRC_SFT);
BIT()
+
+ afe_priv->dai_on[dai->id] = false;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static const struct snd_soc_dai_ops mtk_dai_connsys_i2s_ops = {
+ .hw_params = mtk_dai_connsys_i2s_hw_params,
+ .trigger = mtk_dai_connsys_i2s_trigger,
+};
+
+/* i2s */
+static int mtk_dai_i2s_config(struct mtk_base_afe *afe,
+ struct snd_pcm_hw_params *params,
+ int i2s_id)
+{
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct mtk_afe_i2s_priv *i2s_priv = afe_priv->dai_priv[i2s_id];
+
+ unsigned int rate = params_rate(params);
+ unsigned int rate_reg = mt8186_rate_transform(afe->dev,
+ rate, i2s_id);
Fits on a single line.
+ snd_pcm_format_t format = params_format(params);
+ unsigned int i2s_con = 0;
+ int ret = 0;
+
+ dev_info(afe->dev, "%s(), id %d, rate %d, format %d\n",
+ __func__,
+ i2s_id,
+ rate, format);
dev_dbg(), fits on two lines.
+
+ if (i2s_priv)
+ i2s_priv->rate = rate;
+ else
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
I'm not sure about this print, maybe this should also be dev_dbg()
+
+ switch (i2s_id) {
+ case MT8186_DAI_I2S_0:
+ i2s_con = I2S_IN_PAD_IO_MUX << I2SIN_PAD_SEL_SFT;
+ i2s_con |= rate_reg << I2S_OUT_MODE_SFT;
+ i2s_con |= I2S_FMT_I2S << I2S_FMT_SFT;
+ i2s_con |= get_i2s_wlen(format) << I2S_WLEN_SFT;
+ regmap_update_bits(afe->regmap, AFE_I2S_CON,
+ 0xffffeffa, i2s_con);
+ break;
+ case MT8186_DAI_I2S_1:
+ i2s_con = I2S1_SEL_O28_O29 << I2S2_SEL_O03_O04_SFT;
+ i2s_con |= rate_reg << I2S2_OUT_MODE_SFT;
+ i2s_con |= I2S_FMT_I2S << I2S2_FMT_SFT;
+ i2s_con |= get_i2s_wlen(format) << I2S2_WLEN_SFT;
+ regmap_update_bits(afe->regmap, AFE_I2S_CON1,
+ 0xffffeffa, i2s_con);
+ break;
+ case MT8186_DAI_I2S_2:
+ i2s_con = 8 << I2S3_UPDATE_WORD_SFT;
+ i2s_con |= rate_reg << I2S3_OUT_MODE_SFT;
+ i2s_con |= I2S_FMT_I2S << I2S3_FMT_SFT;
+ i2s_con |= get_i2s_wlen(format) << I2S3_WLEN_SFT;
+ regmap_update_bits(afe->regmap, AFE_I2S_CON2,
+ 0xffffeffa, i2s_con);
+ break;
+ case MT8186_DAI_I2S_3:
+ i2s_con = rate_reg << I2S4_OUT_MODE_SFT;
+ i2s_con |= I2S_FMT_I2S << I2S4_FMT_SFT;
+ i2s_con |= get_i2s_wlen(format) << I2S4_WLEN_SFT;
+ regmap_update_bits(afe->regmap, AFE_I2S_CON3,
+ 0xffffeffa, i2s_con);
+ break;
+ default:
+ dev_info(afe->dev, "%s(), id %d not support\n",
+ __func__, i2s_id);
dev_err()
+ return -EINVAL;
+ }
+
+ /* set share i2s */
+ if (i2s_priv && i2s_priv->share_i2s_id >= 0)
+ ret = mtk_dai_i2s_config(afe, params, i2s_priv->share_i2s_id);
+
if (i2s_priv && i2s_priv->share_i2s_id >= 0) {
ret = mtk_dai_i2s_config(afe, params, i2s_priv->share_i2s_id);
if (ret)
return ret;
}
return 0;
+ return ret;
+}
+
+static int mtk_dai_i2s_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);
+
+ return mtk_dai_i2s_config(afe, params, dai->id);
+}
+
+static int mtk_dai_i2s_set_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct mtk_afe_i2s_priv *i2s_priv = afe_priv->dai_priv[dai->id];
+ int apll;
+ int apll_rate;
+
+ if (!i2s_priv) {
+ dev_info(afe->dev, "%s(), i2s_priv == NULL", __func__);
dev_err()
+ return -EINVAL;
+ }
+
+ if (dir != SND_SOC_CLOCK_OUT) {
+ dev_info(afe->dev, "%s(), dir != SND_SOC_CLOCK_OUT", __func__);
again...
+ return -EINVAL;
+ }
+
+ dev_info(afe->dev, "%s(), freq %d\n", __func__, freq);
dev_dbg()
+
+ apll = mt8186_get_apll_by_rate(afe, freq);
+ apll_rate = mt8186_get_apll_rate(afe, apll);
+
+ if (freq > apll_rate) {
+ dev_info(afe->dev, "%s(), freq > apll rate", __func__);
dev_err() .... please fix the rest as well.
+ return -EINVAL;
+ }
+
+ if (apll_rate % freq != 0) {
+ dev_info(afe->dev, "%s(), APLL cannot generate freq Hz", __func__);
+ return -EINVAL;
+ }
+
+ i2s_priv->mclk_rate = freq;
+ i2s_priv->mclk_apll = apll;
+
+ if (i2s_priv->share_i2s_id > 0) {
+ struct mtk_afe_i2s_priv *share_i2s_priv;
+
+ share_i2s_priv = afe_priv->dai_priv[i2s_priv->share_i2s_id];
+ if (!share_i2s_priv) {
+ dev_info(afe->dev, "%s(), share_i2s_priv == NULL", __func__);
+ return -EINVAL;
+ }
+
+ share_i2s_priv->mclk_rate = i2s_priv->mclk_rate;
+ share_i2s_priv->mclk_apll = i2s_priv->mclk_apll;
+ }
+
+ return 0;
+}
+
Regards,
Angelo
