Add Digital Audio Interface driver that convers PDM bitstream to PCM
format.
Features:
- Fixed filtering characteristics for audio application.
- Full or partial set of channels operation with individual enable control.
- Programmable PDM clock generator.
- Programmable decimation rate.
- 16-bit signed output result.
- Overall stopband attenuation more than 80dB.
- Overall passband ripple less than 0.2dB.
- Programmable cut-off frequency.
- Hardware Voice Activity Detector (HWVAD)
Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@xxxxxxx>
Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
---
sound/soc/fsl/Kconfig | 9 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/fsl_micfil.c | 2451 ++++++++++++++++++++++++++++++++++++++++++++
sound/soc/fsl/fsl_micfil.h | 317 ++++++
4 files changed, 2779 insertions(+)
create mode 100644 sound/soc/fsl/fsl_micfil.c
create mode 100644 sound/soc/fsl/fsl_micfil.h
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 6ec19fb..fe0f339 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -57,6 +57,15 @@ config SND_SOC_FSL_ESAI
This option is only useful for out-of-tree drivers since
in-tree drivers select it automatically.
+config SND_SOC_FSL_MICFIL
+ tristate "Pulse Density Modulation Microphone Interface (MICFIL) module support"
+ select REGMAP_MMIO
+ select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y if you want to add Pulse Density Modulation microphone
+ interface (MICFIL) support for NXP.
+
config SND_SOC_FSL_UTILS
tristate
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index de94fa0..3c0ff31 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -19,6 +19,7 @@ snd-soc-fsl-ssi-y := fsl_ssi.o
snd-soc-fsl-ssi-$(CONFIG_DEBUG_FS) += fsl_ssi_dbg.o
snd-soc-fsl-spdif-objs := fsl_spdif.o
snd-soc-fsl-esai-objs := fsl_esai.o
+snd-soc-fsl-micfil-objs := fsl_micfil.o
snd-soc-fsl-utils-objs := fsl_utils.o
snd-soc-fsl-dma-objs := fsl_dma.o
obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o
@@ -27,6 +28,7 @@ obj-$(CONFIG_SND_SOC_FSL_SAI) += snd-soc-fsl-sai.o
obj-$(CONFIG_SND_SOC_FSL_SSI) += snd-soc-fsl-ssi.o
obj-$(CONFIG_SND_SOC_FSL_SPDIF) += snd-soc-fsl-spdif.o
obj-$(CONFIG_SND_SOC_FSL_ESAI) += snd-soc-fsl-esai.o
+obj-$(CONFIG_SND_SOC_FSL_MICFIL) += snd-soc-fsl-micfil.o
obj-$(CONFIG_SND_SOC_FSL_UTILS) += snd-soc-fsl-utils.o
obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
new file mode 100644
index 0000000..ddf188e
--- /dev/null
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -0,0 +1,2451 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright 2018 NXP
+
+#include <linux/atomic.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/kobject.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/core.h>
+
+#include "fsl_micfil.h"
+#include "imx-pcm.h"
+
+#define FSL_MICFIL_RATES SNDRV_PCM_RATE_8000_48000
+#define FSL_MICFIL_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
+
+struct fsl_micfil {
+ struct platform_device *pdev;
+ struct regmap *regmap;
+ const struct fsl_micfil_soc_data *soc;
+ struct clk *mclk;
+ struct clk *clk_src[MICFIL_CLK_SRC_NUM];
+ struct snd_dmaengine_dai_dma_data dma_params_rx;
+ struct kobject *hwvad_kobject;
+ unsigned int vad_channel;
+ unsigned int dataline;
+ char name[32];
+ int irq[MICFIL_IRQ_LINES];
+ unsigned int mclk_streams;
+ int quality; /*QUALITY 2-0 bits */
+ bool slave_mode;
+ int channel_gain[8];
+ int clk_src_id;
+ int vad_sound_gain;
+ int vad_noise_gain;
+ int vad_input_gain;
+ int vad_frame_time;
+ int vad_init_time;
+ int vad_init_mode;
+ int vad_nfil_adjust;
+ int vad_hpf;
+ int vad_zcd_th;
+ int vad_zcd_auto;
+ int vad_zcd_en;
+ int vad_zcd_adj;
+ int vad_rate_index;
+ atomic_t recording_state;
+ atomic_t hwvad_state;
+};
+
+struct fsl_micfil_soc_data {
+ unsigned int fifos;
+ unsigned int fifo_depth;
+ unsigned int dataline;
+ bool imx;
+};
+
+static char *envp[] = {
+ "EVENT=PDM_VOICE_DETECT",
+ NULL,
+ };
+
+static struct fsl_micfil_soc_data fsl_micfil_imx8mm = {
+ .imx = true,
+ .fifos = 8,
+ .fifo_depth = 8,
+ .dataline = 0xf,
+};
+
+static const struct of_device_id fsl_micfil_dt_ids[] = {
+ { .compatible = "fsl,imx8mm-micfil", .data = &fsl_micfil_imx8mm },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_micfil_dt_ids);
+
+/* Table 5. Quality Modes
+ * Medium 0 0 0
+ * High 0 0 1
+ * Very Low 2 1 0 0
+ * Very Low 1 1 0 1
+ * Very Low 0 1 1 0
+ * Low 1 1 1
+ */
+static const char * const micfil_quality_select_texts[] = {
+ "Medium", "High",
+ "N/A", "N/A",
+ "VLow2", "VLow1",
+ "VLow0", "Low",
+};
+
+static const char * const micfil_hwvad_init_mode[] = {
+ "Envelope mode", "Energy mode",
+};
+
+static const char * const micfil_hwvad_hpf_texts[] = {
+ "Filter bypass",
+ "Cut-off @1750Hz",
+ "Cut-off @215Hz",
+ "Cut-off @102Hz",
+};
+
+static const char * const micfil_hwvad_zcd_enable[] = {
+ "OFF", "ON",
+};
+
+static const char * const micfil_hwvad_zcdauto_enable[] = {
+ "OFF", "ON",
+};
+
+static const char * const micfil_hwvad_noise_decimation[] = {
+ "Disabled", "Enabled",
+};
+
+/* when adding new rate text, also add it to the
+ * micfil_hwvad_rate_ints
+ */
+static const char * const micfil_hwvad_rate[] = {
+ "48KHz", "44.1KHz",
+};
+
+static const int micfil_hwvad_rate_ints[] = {
+ 48000, 44100,
+};
+
+static const char * const micfil_clk_src_texts[] = {
+ "Auto", "AudioPLL1", "AudioPLL2", "ExtClk3",
+};
+
+static const struct soc_enum fsl_micfil_quality_enum =
+ SOC_ENUM_SINGLE(REG_MICFIL_CTRL2,
+ MICFIL_CTRL2_QSEL_SHIFT,
+ ARRAY_SIZE(micfil_quality_select_texts),
+ micfil_quality_select_texts);
+static const struct soc_enum fsl_micfil_hwvad_init_mode_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_init_mode),
+ micfil_hwvad_init_mode);
+static const struct soc_enum fsl_micfil_hwvad_hpf_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_hpf_texts),
+ micfil_hwvad_hpf_texts);
+static const struct soc_enum fsl_micfil_hwvad_zcd_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_zcd_enable),
+ micfil_hwvad_zcd_enable);
+static const struct soc_enum fsl_micfil_hwvad_zcdauto_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_zcdauto_enable),
+ micfil_hwvad_zcd_enable);
+static const struct soc_enum fsl_micfil_hwvad_ndec_enum =
+ SOC_ENUM_SINGLE(REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NOREN_SHIFT,
+ ARRAY_SIZE(micfil_hwvad_noise_decimation),
+ micfil_hwvad_noise_decimation);
+static const struct soc_enum fsl_micfil_hwvad_rate_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_hwvad_rate),
+ micfil_hwvad_rate);
+static const struct soc_enum fsl_micfil_clk_src_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_clk_src_texts),
+ micfil_clk_src_texts);
+
+static int micfil_put_clk_src(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ micfil->clk_src_id = val;
+
+ return 0;
+}
+
+static int micfil_get_clk_src(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->clk_src_id;
+
+ return 0;
+}
+
+static int hwvad_put_init_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ /* 0 - Envelope-based Mode
+ * 1 - Energy-based Mode
+ */
+ micfil->vad_init_mode = val;
+ return 0;
+}
+
+static int hwvad_get_init_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_init_mode;
+
+ return 0;
+}
+
+static int hwvad_put_hpf(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ /* 00 - HPF Bypass
+ * 01 - Cut-off frequency 1750Hz
+ * 10 - Cut-off frequency 215Hz
+ * 11 - Cut-off frequency 102Hz
+ */
+ micfil->vad_hpf = val;
+
+ return 0;
+}
+
+static int hwvad_get_hpf(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_hpf;
+
+ return 0;
+}
+
+static int hwvad_put_zcd_en(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ micfil->vad_zcd_en = val;
+
+ return 0;
+}
+
+static int hwvad_get_zcd_en(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_zcd_en;
+
+ return 0;
+}
+
+static int hwvad_put_rate(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ micfil->vad_rate_index = val;
+
+ return 0;
+}
+
+static int hwvad_get_rate(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_rate_index;
+
+ return 0;
+}
+
+static int hwvad_put_zcd_auto(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *item = ucontrol->value.enumerated.item;
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ int val = snd_soc_enum_item_to_val(e, item[0]);
+
+ micfil->vad_zcd_auto = val;
+
+ return 0;
+}
+
+static int hwvad_get_zcd_auto(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_zcd_auto;
+
+ return 0;
+}
+
+static int gain_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 0xf;
+
+ return 0;
+}
+
+static int put_channel_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ unsigned int shift = mc->shift;
+ int index = shift / 4;
+ int val = ucontrol->value.integer.value[0];
+ int remapped_value;
+ int ret;
+ u32 reg_val;
+
+ /* a value remapping must be done since the gain field have
+ * the following meaning:
+ * * 0 : no gain
+ * * 1 - 7 : +1 to +7 bits gain
+ * * 8 - 15 : -8 to -1 bits gain
+ * After the remapp, the scale should start from -8 to +7
+ */
+
+ micfil->channel_gain[index] = val;
+
+ remapped_value = (val - 8) & 0xF;
+
+ reg_val = remapped_value << shift;
+
+ ret = snd_soc_component_update_bits(comp,
+ REG_MICFIL_OUT_CTRL,
+ 0xF << shift,
+ reg_val);
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int get_channel_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int index;
+
+ /* gain bitfield is 4 bits wide */
+ index = mc->shift / 4;
+
+ ucontrol->value.enumerated.item[0] = micfil->channel_gain[index];
+
+ return 0;
+}
+
+static int hwvad_put_input_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_input_gain = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_input_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_input_gain;
+
+ return 0;
+}
+
+static int hwvad_put_sound_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_sound_gain = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_sound_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_sound_gain;
+
+ return 0;
+}
+
+static int hwvad_put_noise_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_noise_gain = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_noise_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_noise_gain;
+
+ return 0;
+}
+
+static int hwvad_framet_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 1;
+ uinfo->value.integer.max = 64;
+
+ return 0;
+}
+
+static int hwvad_put_frame_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_frame_time = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_frame_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_frame_time;
+
+ return 0;
+}
+
+static int hwvad_initt_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 1;
+ uinfo->value.integer.max = 32;
+
+ return 0;
+}
+
+static int hwvad_put_init_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_init_time = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_init_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_init_time;
+
+ return 0;
+}
+
+static int hwvad_nfiladj_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 1;
+ uinfo->value.integer.max = 32;
+
+ return 0;
+}
+
+static int hwvad_put_nfil_adjust(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_nfil_adjust = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_nfil_adjust(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_nfil_adjust;
+
+ return 0;
+}
+
+static int hwvad_zcdth_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 1;
+ uinfo->value.integer.max = 1024;
+
+ return 0;
+}
+
+static int hwvad_put_zcd_th(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_zcd_th = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_zcd_th(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_zcd_th;
+
+ return 0;
+}
+
+static int hwvad_zcdadj_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 1;
+ uinfo->value.integer.max = 16;
+
+ return 0;
+}
+
+static int hwvad_put_zcd_adj(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ micfil->vad_zcd_adj = ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int hwvad_get_zcd_adj(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct fsl_micfil *micfil = snd_soc_component_get_drvdata(comp);
+
+ ucontrol->value.enumerated.item[0] = micfil->vad_zcd_adj;
+
+ return 0;
+}
+
+static DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0);
+
+static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
+ SOC_SINGLE_RANGE_EXT_TLV("CH0 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(0),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH1 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(1),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH2 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(2),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH3 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(3),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH4 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(4),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH5 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(5),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH6 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(6),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+ SOC_SINGLE_RANGE_EXT_TLV("CH7 Gain", -1, MICFIL_OUTGAIN_CHX_SHIFT(7),
+ 0x0, 0xF, 0,
+ get_channel_gain, put_channel_gain, gain_tlv),
+
+ SOC_ENUM_EXT("MICFIL Quality Select",
+ fsl_micfil_quality_enum,
+ snd_soc_get_enum_double, snd_soc_put_enum_double),
+ SOC_ENUM_EXT("HWVAD Initialization Mode",
+ fsl_micfil_hwvad_init_mode_enum,
+ hwvad_get_init_mode, hwvad_put_init_mode),
+ SOC_ENUM_EXT("HWVAD High-Pass Filter",
+ fsl_micfil_hwvad_hpf_enum,
+ hwvad_get_hpf, hwvad_put_hpf),
+ SOC_ENUM_EXT("HWVAD Zero-Crossing Detector Enable",
+ fsl_micfil_hwvad_zcd_enum,
+ hwvad_get_zcd_en, hwvad_put_zcd_en),
+ SOC_ENUM_EXT("HWVAD Zero-Crossing Detector Auto Threshold",
+ fsl_micfil_hwvad_zcdauto_enum,
+ hwvad_get_zcd_auto, hwvad_put_zcd_auto),
+ SOC_ENUM_EXT("HWVAD Noise OR Enable",
+ fsl_micfil_hwvad_ndec_enum,
+ snd_soc_get_enum_double, snd_soc_put_enum_double),
+ SOC_ENUM_EXT("HWVAD Sampling Rate",
+ fsl_micfil_hwvad_rate_enum,
+ hwvad_get_rate, hwvad_put_rate),
+ SOC_ENUM_EXT("Clock Source",
+ fsl_micfil_clk_src_enum,
+ micfil_get_clk_src, micfil_put_clk_src),
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Input Gain",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = gain_info,
+ .get = hwvad_get_input_gain,
+ .put = hwvad_put_input_gain,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Sound Gain",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = gain_info,
+ .get = hwvad_get_sound_gain,
+ .put = hwvad_put_sound_gain,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Noise Gain",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = gain_info,
+ .get = hwvad_get_noise_gain,
+ .put = hwvad_put_noise_gain,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Detector Frame Time",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = hwvad_framet_info,
+ .get = hwvad_get_frame_time,
+ .put = hwvad_put_frame_time,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Detector Initialization Time",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = hwvad_initt_info,
+ .get = hwvad_get_init_time,
+ .put = hwvad_put_init_time,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Noise Filter Adjustment",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = hwvad_nfiladj_info,
+ .get = hwvad_get_nfil_adjust,
+ .put = hwvad_put_nfil_adjust,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Zero-Crossing Detector Threshold",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = hwvad_zcdth_info,
+ .get = hwvad_get_zcd_th,
+ .put = hwvad_put_zcd_th,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "HWVAD Zero-Crossing Detector Adjustment",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = hwvad_zcdadj_info,
+ .get = hwvad_get_zcd_adj,
+ .put = hwvad_put_zcd_adj,
+ },
+
+};
+
+static int disable_hwvad(struct device *dev, bool sync);
+
+static inline int get_pdm_clk(struct fsl_micfil *micfil,
+ unsigned int rate);
+
+static inline int get_clk_div(struct fsl_micfil *micfil,
+ unsigned int rate)
+{
+ u32 ctrl2_reg;
+ long mclk_rate;
+ int osr;
+ int clk_div;
+
+ regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
+ osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK)
+ >> MICFIL_CTRL2_CICOSR_SHIFT);
+
+ mclk_rate = clk_get_rate(micfil->mclk);
+
+ clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2);
+
+ return clk_div;
+}
+
+static inline int get_pdm_clk(struct fsl_micfil *micfil,
+ unsigned int rate)
+{
+ u32 ctrl2_reg;
+ int qsel, osr;
+ int bclk;
+
+ regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
+ osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK)
+ >> MICFIL_CTRL2_CICOSR_SHIFT);
+
+ regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
+ qsel = ctrl2_reg & MICFIL_CTRL2_QSEL_MASK;
+
+ switch (qsel) {
+ case MICFIL_HIGH_QUALITY:
+ bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */
+ break;
+ case MICFIL_MEDIUM_QUALITY:
+ case MICFIL_VLOW0_QUALITY:
+ bclk = rate * 4 * osr * 1; /* kfactor = 1 */
+ break;
+ case MICFIL_LOW_QUALITY:
+ case MICFIL_VLOW1_QUALITY:
+ bclk = rate * 2 * osr * 2; /* kfactor = 2 */
+ break;
+ case MICFIL_VLOW2_QUALITY:
+ bclk = rate * osr * 4; /* kfactor = 4 */
+ break;
+ default:
+ dev_err(&micfil->pdev->dev,
+ "Please make sure you select a valid quality.\n");
+ bclk = -1;
+ break;
+ }
+
+ return bclk;
+}
+
+/* The SRES is a self-negated bit which provides the CPU with the
+ * capability to initialize the PDM Interface module through the
+ * slave-bus interface. This bit always reads as zero, and this
+ * bit is only effective when MDIS is cleared
+ */
+static int fsl_micfil_reset(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regmap_update_bits(micfil->regmap,
+ REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_MDIS_MASK,
+ 0);
+ if (ret) {
+ dev_err(dev, "failed to clear MDIS bit %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_update_bits(micfil->regmap,
+ REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_SRES_MASK,
+ MICFIL_CTRL1_SRES);
+ if (ret) {
+ dev_err(dev, "failed to reset MICFIL: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* enable/disable hwvad interrupts */
+static int configure_hwvad_interrupts(struct device *dev,
+ int enable)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ u32 vadie_reg = enable ? MICFIL_VAD0_CTRL1_IE : 0;
+ u32 vaderie_reg = enable ? MICFIL_VAD0_CTRL1_ERIE : 0;
+
+ /* Voice Activity Detector Error Interruption Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_ERIE_MASK,
+ vaderie_reg);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set/clear VADERIE in CTRL1_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Voice Activity Detector Interruption Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_IE_MASK,
+ vadie_reg);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set/clear VADIE in CTRL1_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int init_hwvad_internal_filters(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+
+ /* Voice Activity Detector Internal Filters Initialization*/
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_ST10_MASK,
+ MICFIL_VAD0_CTRL1_ST10);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set VADST10 in CTRL1_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* sleep for 100ms - it should be enough for bit to stay
+ * pulsed for more than 2 cycles
+ */
+ usleep_range(MICFIL_SLEEP_MIN, MICFIL_SLEEP_MAX);
+
+ /* Voice Activity Detector Enabled */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_ST10_MASK,
+ 0);
+ if (ret) {
+ dev_err(dev,
+ "Failed to clear VADST10 in CTRL1_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+ return 0;
+}
+
+/* Zero-Crossing Detector Initialization
+ * Optionally a Zero-Crossing Detection block (ZCD) could
+ * be enabled to avoid low energy voiced speech be missed,
+ * improving the voice detection performance.
+ * See Section 8.4.3
+ */
+static int __maybe_unused init_zcd(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+
+ /* exit if zcd is not enabled from userspace */
+ if (!micfil->vad_zcd_en)
+ return 0;
+
+ if (micfil->vad_zcd_auto) {
+ /* Zero-Crossing Detector Adjustment */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_ZCD,
+ MICFIL_VAD0_ZCD_ZCDADJ_MASK,
+ micfil->vad_zcd_adj);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set ZCDADJ in ZCD_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+ }
+
+ /* Zero-Crossing Detector Threshold */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_ZCD,
+ MICFIL_VAD0_ZCD_ZCDTH_MASK,
+ MICFIL_VAD0_ZCD_ZCDTH(micfil->vad_zcd_th));
+ if (ret) {
+ dev_err(dev, "Failed to set ZCDTH in ZCD_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Zero-Crossing Detector AND Behavior */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_ZCD,
+ MICFIL_VAD0_ZCD_ZCDAND_MASK,
+ MICFIL_HWVAD_ZCDAND);
+ if (ret) {
+ dev_err(dev, "Failed to set ZCDAND in ZCD_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Zero-Crossing Detector Automatic Threshold */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_ZCD,
+ MICFIL_VAD0_ZCD_ZCDAUT_MASK,
+ micfil->vad_zcd_auto);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set/clear ZCDAUT in ZCD_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Zero-Crossing Detector Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_ZCD,
+ MICFIL_VAD0_ZCD_ZCDEN_MASK,
+ MICFIL_VAD0_ZCD_ZCDEN);
+ if (ret) {
+ dev_err(dev, "Failed to set ZCDEN in ZCD_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* Configuration done only in energy-based initialization mode */
+static int init_hwvad_energy_mode(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret, i;
+ u32 stat;
+ u32 flag;
+
+ dev_info(dev, "Energy-based mode initialization\n");
+
+ /* Voice Activity Detector Reset */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_RST_SHIFT,
+ MICFIL_VAD0_CTRL1_RST);
+ if (ret) {
+ dev_err(dev, "Failed to set VADRST in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Voice Activity Detector Enabled */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_EN_MASK,
+ MICFIL_VAD0_CTRL1_EN);
+ if (ret) {
+ dev_err(dev, "Failed to set VADEN in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* it would be a good idea to wait some time before VADEN
+ * is set
+ */
+ usleep_range(5 * MICFIL_SLEEP_MIN, 5 * MICFIL_SLEEP_MAX);
+
+ /* Enable Interrupts */
+ ret = configure_hwvad_interrupts(dev, 1);
+
+ /* Initialize Zero Crossing Detector */
+ ret = init_zcd(dev);
+ if (ret)
+ return ret;
+
+ /* Enable MICFIL module */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK,
+ MICFIL_CTRL1_PDMIEN);
+ if (ret) {
+ dev_err(dev, "failed to enable the module\n");
+ return ret;
+ }
+
+ /* Wait for INITF to be asserted */
+ for (i = 0; i < MICFIL_MAX_RETRY; i++) {
+ ret = regmap_read(micfil->regmap, REG_MICFIL_VAD0_STAT, &stat);
+ if (ret) {
+ dev_err(dev, "failed to read register %d\n",
+ REG_MICFIL_VAD0_STAT);
+ return ret;
+ }
+
+ flag = (stat & MICFIL_VAD0_STAT_INITF_MASK);
+ if (flag == 0)
+ break;
+
+ usleep_range(MICFIL_SLEEP_MIN, MICFIL_SLEEP_MAX);
+ }
+
+ if (i == MICFIL_MAX_RETRY) {
+ dev_err(dev, "initf not asserted. Failed to init hwvad\n");
+ return -EBUSY;
+ }
+
+ /* Initialize Internal Filters */
+ ret = init_hwvad_internal_filters(dev);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+/* Configuration done only in envelope-based initialization mode */
+static int init_hwvad_envelope_mode(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret, i;
+ u32 stat;
+ u32 flag;
+
+ /* Frame energy disable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_FRENDIS_MASK,
+ MICFIL_VAD0_CTRL2_FRENDIS);
+ if (ret) {
+ dev_err(dev, "Failed to set FRENDIS in CTRL2_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Enable pre-filter Noise & Signal */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_PREFEN_MASK,
+ MICFIL_VAD0_CTRL2_PREFEN);
+ if (ret) {
+ dev_err(dev, "Failed to set PREFEN in CTRL2_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Enable Signal Filter */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_SCONFIG,
+ MICFIL_VAD0_SCONFIG_SFILEN_MASK,
+ MICFIL_VAD0_SCONFIG_SFILEN);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set SFILEN in SCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Signal Maximum Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_SCONFIG,
+ MICFIL_VAD0_SCONFIG_SMAXEN_MASK,
+ MICFIL_VAD0_SCONFIG_SMAXEN);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set SMAXEN in SCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Allways enable noise filter, not based on voice activity
+ * information
+ */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NFILAUT_MASK,
+ 0);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set NFILAUT in NCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Noise Minimum Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NMINEN_MASK,
+ MICFIL_VAD0_NCONFIG_NMINEN);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set NMINEN in NCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Noise Decimation Enable */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NDECEN_MASK,
+ MICFIL_VAD0_NCONFIG_NDECEN);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set NDECEN in NCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* Voice Activity Detector Reset */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_RST_MASK,
+ MICFIL_VAD0_CTRL1_RST);
+ if (ret) {
+ dev_err(dev, "Failed to set VADRST in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Initialize Zero Crossing Detector */
+ ret = init_zcd(dev);
+ if (ret)
+ return ret;
+
+ /* Voice Activity Detector Enabled */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_EN_MASK,
+ MICFIL_VAD0_CTRL1_EN);
+ if (ret) {
+ dev_err(dev, "Failed to set VADEN in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* Enable MICFIL module */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK,
+ MICFIL_CTRL1_PDMIEN);
+ if (ret) {
+ dev_err(dev, "failed to enable the module\n");
+ return ret;
+ }
+
+ /* it would be a good idea to wait some time before VADEN
+ * is set
+ */
+ usleep_range(3 * MICFIL_SLEEP_MIN, 3 * MICFIL_SLEEP_MAX);
+
+ /* Wait for INITF to be asserted */
+ for (i = 0; i < MICFIL_MAX_RETRY; i++) {
+ ret = regmap_read(micfil->regmap, REG_MICFIL_VAD0_STAT, &stat);
+ if (ret) {
+ dev_err(dev, "failed to read register %d\n",
+ REG_MICFIL_VAD0_STAT);
+ return ret;
+ }
+
+ flag = (stat & MICFIL_VAD0_STAT_INITF_MASK);
+ if (flag == 0)
+ break;
+
+ usleep_range(MICFIL_SLEEP_MIN, MICFIL_SLEEP_MAX);
+ }
+
+ if (i == MICFIL_MAX_RETRY) {
+ dev_err(dev, "initf not asserted. Failed to init hwvad\n");
+ return -EBUSY;
+ }
+
+ /* Initialize Internal Filters */
+ ret = init_hwvad_internal_filters(dev);
+ if (ret)
+ return ret;
+
+ /* Enable interrupts */
+ ret = configure_hwvad_interrupts(dev, 1);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+/* Hardware Voice Active Detection: The HWVAD takes data from the input
+ * of a selected PDM microphone to detect if there is any
+ * voice activity. When a voice activity is detected, an interrupt could
+ * be delivered to the system. Initialization in section 8.4:
+ * Can work in two modes:
+ * -> Eneveope-based mode (section 8.4.1)
+ * -> Energy-based mode (section 8.4.2)
+ *
+ * It is important to remark that the HWVAD detector could be enabled
+ * or reset only when the MICFIL isn't running i.e. when the BSY_FIL
+ * bit in STAT register is cleared
+ */
+static int __maybe_unused init_hwvad(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ u32 reg_val;
+
+ /* configure CIC OSR in VADCICOSR */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_CICOSR_MASK,
+ MICFIL_CTRL2_OSR_DEFAULT);
+ if (ret) {
+ dev_err(dev, "Failed to set CICOSR in CTRL1_VAD0i [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure source channel in VADCHSEL */
+ reg_val = MICFIL_VAD0_CTRL1_CHSEL(micfil->vad_channel);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_CHSEL_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set CHSEL in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure detector frame time VADFRAMET */
+ reg_val = MICFIL_VAD0_CTRL2_FRAMET(micfil->vad_frame_time);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_FRAMET_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set FRAMET in CTRL2_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure initialization time in VADINITT */
+ reg_val = MICFIL_VAD0_CTRL1_INITT(micfil->vad_init_time);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_INITT_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set INITT in CTRL1_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure input gain in VADINPGAIN */
+ reg_val = MICFIL_VAD0_CTRL2_INPGAIN(micfil->vad_input_gain);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_INPGAIN_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set INPGAIN in CTRL2_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure sound gain in SGAIN */
+ reg_val = MICFIL_VAD0_SCONFIG_SGAIN(micfil->vad_sound_gain);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_SCONFIG,
+ MICFIL_VAD0_SCONFIG_SGAIN_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set SGAIN in SCONFIG_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure noise gain in NGAIN */
+ reg_val = MICFIL_VAD0_NCONFIG_NGAIN(micfil->vad_noise_gain);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NGAIN_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set NGAIN in NCONFIG_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* configure or clear the VADNFILADJ based on mode */
+ reg_val = MICFIL_VAD0_NCONFIG_NFILADJ(micfil->vad_nfil_adjust);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NFILADJ_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev,
+ "Failed to set VADNFILADJ in NCONFIG_VAD0 [%d]\n",
+ ret);
+ return ret;
+ }
+
+ /* enable the high-pass filter in VADHPF */
+ reg_val = MICFIL_VAD0_CTRL2_HPF(micfil->vad_hpf);
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_HPF_MASK,
+ reg_val);
+ if (ret) {
+ dev_err(dev, "Failed to set HPF in CTRL2_VAD0 [%d]\n", ret);
+ return ret;
+ }
+
+ /* envelope-based specific initialization */
+ if (micfil->vad_init_mode == MICFIL_HWVAD_ENVELOPE_MODE) {
+ ret = init_hwvad_envelope_mode(dev);
+ if (ret)
+ return ret;
+ } else {
+ ret = init_hwvad_energy_mode(dev);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline bool clk_in_list(struct clk *p, struct clk *clk_src[])
+{
+ int i;
+
+ for (i = 0; i < MICFIL_CLK_SRC_NUM; i++)
+ if (clk_is_match(p, clk_src[i]))
+ return true;
+
+ return false;
+}
+
+static int fsl_micfil_set_mclk_rate(struct fsl_micfil *micfil, int clk_id,
+ unsigned int freq)
+{
+ struct clk *p = micfil->mclk, *pll = 0, *npll = 0;
+ struct device *dev = &micfil->pdev->dev;
+ u64 ratio = freq;
+ u64 clk_rate;
+ int ret;
+ int i;
+
+ /* Do not touch the clock if hwvad is already enabled
+ * since you can record only at hwvad rate and clock
+ * has already been set to the required frequency
+ */
+ if (atomic_read(&micfil->hwvad_state) == MICFIL_HWVAD_ON)
+ return 0;
+
+ /* check if all clock sources are valid */
+ for (i = 0; i < MICFIL_CLK_SRC_NUM; i++) {
+ if (micfil->clk_src[i])
+ continue;
+
+ dev_err(dev, "Clock Source %d is not valid.\n", i);
+ return -EINVAL;
+ }
+
+ while (p) {
+ struct clk *pp = clk_get_parent(p);
+
+ if (clk_in_list(pp, micfil->clk_src)) {
+ pll = pp;
+ break;
+ }
+ p = pp;
+ }
+
+ if (!pll) {
+ dev_err(dev, "reached a null clock\n");
+ return -EINVAL;
+ }
+
+ if (micfil->clk_src_id == MICFIL_CLK_AUTO) {
+ for (i = 0; i < MICFIL_CLK_SRC_NUM; i++) {
+ clk_rate = clk_get_rate(micfil->clk_src[i]);
+ /* This is an workaround since audio_pll2 clock
+ * has 722534399 rate and this will never divide
+ * to any known frequency ???
+ */
+ clk_rate = round_up(clk_rate, 10);
+ if (do_div(clk_rate, ratio) == 0)
+ npll = micfil->clk_src[i];
+ }
+ } else {
+ /* clock id is offseted by 1 since ID=0 means
+ * auto clock selection
+ */
+ npll = micfil->clk_src[micfil->clk_src_id - 1];
+ }
+
+ if (!npll) {
+ dev_err(dev,
+ "failed to find a suitable clock source\n");
+ return -EINVAL;
+ }
+
+ if (!clk_is_match(pll, npll)) {
+ ret = clk_set_parent(p, npll);
+ if (ret < 0)
+ dev_warn(dev,
+ "failed to set parrent %d\n", ret);
+ }
+
+ clk_disable_unprepare(micfil->mclk);
+ ret = clk_set_rate(micfil->mclk, freq * 1024);
+ if (ret)
+ dev_warn(dev, "failed to set rate (%u): %d\n",
+ freq * 1024, ret);
+ clk_prepare_enable(micfil->mclk);
+
+ return ret;
+}
+
+static int fsl_micfil_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+
+ if (!micfil) {
+ dev_err(dai->dev,
+ "micfil dai priv_data not set\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int fsl_micfil_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+ struct device *dev = &micfil->pdev->dev;
+ int ret;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ret = fsl_micfil_reset(dev);
+ if (ret) {
+ dev_err(dev, "failed to soft reset\n");
+ return ret;
+ }
+
+ /* DMA Interrupt Selection - DISEL bits
+ * 00 - DMA and IRQ disabled
+ * 01 - DMA req enabled
+ * 10 - IRQ enabled
+ * 11 - reserved
+ */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_DISEL_MASK,
+ (1 << MICFIL_CTRL1_DISEL_SHIFT));
+ if (ret) {
+ dev_err(dev, "failed to update DISEL bits\n");
+ return ret;
+ }
+
+ /* Enable the module */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK,
+ MICFIL_CTRL1_PDMIEN);
+ if (ret) {
+ dev_err(dev, "failed to enable the module\n");
+ return ret;
+ }
+
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ /* Disable the module */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK,
+ 0);
+ if (ret) {
+ dev_err(dev, "failed to enable the module\n");
+ return ret;
+ }
+
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_DISEL_MASK,
+ (0 << MICFIL_CTRL1_DISEL_SHIFT));
+ if (ret) {
+ dev_err(dev, "failed to update DISEL bits\n");
+ return ret;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fsl_set_clock_params(struct device *dev, unsigned int rate)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int clk_div;
+ int ret = 0;
+
+ ret = fsl_micfil_set_mclk_rate(micfil, 0, rate);
+ if (ret < 0)
+ dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
+ clk_get_rate(micfil->mclk), rate);
+
+ /* set CICOSR */
+ ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
+ MICFIL_CTRL2_CICOSR_MASK,
+ MICFIL_CTRL2_OSR_DEFAULT);
+ if (ret)
+ dev_err(dev, "failed to set CICOSR in reg 0x%X\n",
+ REG_MICFIL_CTRL2);
+
+ /* set CLK_DIV */
+ clk_div = get_clk_div(micfil, rate);
+ if (clk_div < 0)
+ ret = -EINVAL;
+
+ ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
+ MICFIL_CTRL2_CLKDIV_MASK, clk_div);
+ if (ret)
+ dev_err(dev, "failed to set CLKDIV in reg 0x%X\n",
+ REG_MICFIL_CTRL2);
+
+ return ret;
+}
+
+static int fsl_micfil_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+ unsigned int channels = params_channels(params);
+ unsigned int rate = params_rate(params);
+ struct device *dev = &micfil->pdev->dev;
+ unsigned int hwvad_rate;
+ int ret;
+ u32 hwvad_state;
+
+ hwvad_rate = micfil_hwvad_rate_ints[micfil->vad_rate_index];
+ hwvad_state = atomic_read(&micfil->hwvad_state);
+
+ /* if hwvad is enabled, make sure you are recording at
+ * the same rate the hwvad is on or reject it to avoid
+ * changing the clock rate.
+ */
+ if (hwvad_state == MICFIL_HWVAD_ON && rate != hwvad_rate) {
+ dev_err(dev, "Record at hwvad rate %u\n", hwvad_rate);
+ return -EINVAL;
+ }
+
+ atomic_set(&micfil->recording_state, MICFIL_RECORDING_ON);
+
+ if (hwvad_state == MICFIL_HWVAD_OFF) {
+ /* 1. Disable the module */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK, 0);
+ if (ret) {
+ dev_err(dev, "failed to disable the module\n");
+ return ret;
+ }
+ }
+
+ /* enable channels */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
+ 0xFF, ((1 << channels) - 1));
+ if (ret) {
+ dev_err(dev, "failed to enable channels %d, reg 0x%X\n", ret,
+ REG_MICFIL_CTRL1);
+ return ret;
+ }
+
+ ret = fsl_set_clock_params(dev, rate);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set clock parameters [%d]\n", ret);
+ return ret;
+ }
+
+ micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;
+
+ return 0;
+}
+
+static int fsl_micfil_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+
+ atomic_set(&micfil->recording_state, MICFIL_RECORDING_OFF);
+
+ return 0;
+}
+
+static int fsl_micfil_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+ struct device *dev = &micfil->pdev->dev;
+
+ int ret;
+
+ if (!freq)
+ return 0;
+
+ ret = fsl_micfil_set_mclk_rate(micfil, clk_id, freq);
+ if (ret < 0)
+ dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
+ clk_get_rate(micfil->mclk), freq);
+
+ return ret;
+}
+
+static int fsl_micfil_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
+
+ /* DAI MODE */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* DAI CLK INVERSION */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ micfil->slave_mode = false;
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops fsl_micfil_dai_ops = {
+ .startup = fsl_micfil_startup,
+ .trigger = fsl_micfil_trigger,
+ .hw_params = fsl_micfil_hw_params,
+ .hw_free = fsl_micfil_hw_free,
+ .set_sysclk = fsl_micfil_set_dai_sysclk,
+ .set_fmt = fsl_micfil_set_dai_fmt,
+};
+
+static int fsl_micfil_dai_probe(struct snd_soc_dai *cpu_dai)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(cpu_dai->dev);
+ struct device *dev = cpu_dai->dev;
+ unsigned int val;
+ int ret;
+ int i;
+
+ /* set qsel to medium */
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
+ MICFIL_CTRL2_QSEL_MASK, MICFIL_MEDIUM_QUALITY);
+ if (ret) {
+ dev_err(dev, "failed to set quality mode bits, reg 0x%X\n",
+ REG_MICFIL_CTRL2);
+ return ret;
+ }
+
+ /* set default gain to max_gain */
+ regmap_write(micfil->regmap, REG_MICFIL_OUT_CTRL, 0x77777777);
+ for (i = 0; i < 8; i++)
+ micfil->channel_gain[i] = 0xF;
+
+ snd_soc_dai_init_dma_data(cpu_dai, NULL,
+ &micfil->dma_params_rx);
+
+ /* FIFO Watermark Control - FIFOWMK*/
+ val = MICFIL_FIFO_CTRL_FIFOWMK(micfil->soc->fifo_depth) - 1;
+ ret = regmap_update_bits(micfil->regmap, REG_MICFIL_FIFO_CTRL,
+ MICFIL_FIFO_CTRL_FIFOWMK_MASK,
+ val);
+ if (ret) {
+ dev_err(dev, "failed to set FIFOWMK\n");
+ return ret;
+ }
+
+ snd_soc_dai_set_drvdata(cpu_dai, micfil);
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver fsl_micfil_dai = {
+ .probe = fsl_micfil_dai_probe,
+ .capture = {
+ .stream_name = "CPU-Capture",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = FSL_MICFIL_RATES,
+ .formats = FSL_MICFIL_FORMATS,
+ },
+ .ops = &fsl_micfil_dai_ops,
+};
+
+static const struct snd_soc_component_driver fsl_micfil_component = {
+ .name = "fsl-micfil-dai",
+ .controls = fsl_micfil_snd_controls,
+ .num_controls = ARRAY_SIZE(fsl_micfil_snd_controls),
+
+};
+
+/* REGMAP */
+static const struct reg_default fsl_micfil_reg_defaults[] = {
+ {REG_MICFIL_CTRL1, 0x00000000},
+ {REG_MICFIL_CTRL2, 0x00000000},
+ {REG_MICFIL_STAT, 0x00000000},
+ {REG_MICFIL_FIFO_CTRL, 0x00000007},
+ {REG_MICFIL_FIFO_STAT, 0x00000000},
+ {REG_MICFIL_DATACH0, 0x00000000},
+ {REG_MICFIL_DATACH1, 0x00000000},
+ {REG_MICFIL_DATACH2, 0x00000000},
+ {REG_MICFIL_DATACH3, 0x00000000},
+ {REG_MICFIL_DATACH4, 0x00000000},
+ {REG_MICFIL_DATACH5, 0x00000000},
+ {REG_MICFIL_DATACH6, 0x00000000},
+ {REG_MICFIL_DATACH7, 0x00000000},
+ {REG_MICFIL_DC_CTRL, 0x00000000},
+ {REG_MICFIL_OUT_CTRL, 0x00000000},
+ {REG_MICFIL_OUT_STAT, 0x00000000},
+ {REG_MICFIL_VAD0_CTRL1, 0x00000000},
+ {REG_MICFIL_VAD0_CTRL2, 0x000A0000},
+ {REG_MICFIL_VAD0_STAT, 0x00000000},
+ {REG_MICFIL_VAD0_SCONFIG, 0x00000000},
+ {REG_MICFIL_VAD0_NCONFIG, 0x80000000},
+ {REG_MICFIL_VAD0_NDATA, 0x00000000},
+ {REG_MICFIL_VAD0_ZCD, 0x00000004},
+};
+
+static bool fsl_micfil_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case REG_MICFIL_CTRL1:
+ case REG_MICFIL_CTRL2:
+ case REG_MICFIL_STAT:
+ case REG_MICFIL_FIFO_CTRL:
+ case REG_MICFIL_FIFO_STAT:
+ case REG_MICFIL_DATACH0:
+ case REG_MICFIL_DATACH1:
+ case REG_MICFIL_DATACH2:
+ case REG_MICFIL_DATACH3:
+ case REG_MICFIL_DATACH4:
+ case REG_MICFIL_DATACH5:
+ case REG_MICFIL_DATACH6:
+ case REG_MICFIL_DATACH7:
+ case REG_MICFIL_DC_CTRL:
+ case REG_MICFIL_OUT_CTRL:
+ case REG_MICFIL_OUT_STAT:
+ case REG_MICFIL_VAD0_CTRL1:
+ case REG_MICFIL_VAD0_CTRL2:
+ case REG_MICFIL_VAD0_STAT:
+ case REG_MICFIL_VAD0_SCONFIG:
+ case REG_MICFIL_VAD0_NCONFIG:
+ case REG_MICFIL_VAD0_NDATA:
+ case REG_MICFIL_VAD0_ZCD:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool fsl_micfil_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case REG_MICFIL_CTRL1:
+ case REG_MICFIL_CTRL2:
+ case REG_MICFIL_STAT: /* Write 1 to Clear */
+ case REG_MICFIL_FIFO_CTRL:
+ case REG_MICFIL_FIFO_STAT: /* Write 1 to Clear */
+ case REG_MICFIL_DC_CTRL:
+ case REG_MICFIL_OUT_CTRL:
+ case REG_MICFIL_OUT_STAT: /* Write 1 to Clear */
+ case REG_MICFIL_VAD0_CTRL1:
+ case REG_MICFIL_VAD0_CTRL2:
+ case REG_MICFIL_VAD0_STAT: /* Write 1 to Clear */
+ case REG_MICFIL_VAD0_SCONFIG:
+ case REG_MICFIL_VAD0_NCONFIG:
+ case REG_MICFIL_VAD0_ZCD:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool fsl_micfil_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case REG_MICFIL_CTRL1:
+ case REG_MICFIL_CTRL2:
+ case REG_MICFIL_STAT:
+ case REG_MICFIL_DATACH0:
+ case REG_MICFIL_DATACH1:
+ case REG_MICFIL_DATACH2:
+ case REG_MICFIL_DATACH3:
+ case REG_MICFIL_DATACH4:
+ case REG_MICFIL_DATACH5:
+ case REG_MICFIL_DATACH6:
+ case REG_MICFIL_DATACH7:
+ case REG_MICFIL_VAD0_CTRL1:
+ case REG_MICFIL_VAD0_CTRL2:
+ case REG_MICFIL_VAD0_STAT:
+ case REG_MICFIL_VAD0_SCONFIG:
+ case REG_MICFIL_VAD0_NCONFIG:
+ case REG_MICFIL_VAD0_NDATA:
+ case REG_MICFIL_VAD0_ZCD:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config fsl_micfil_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+
+ .max_register = REG_MICFIL_VAD0_ZCD,
+ .reg_defaults = fsl_micfil_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(fsl_micfil_reg_defaults),
+ .readable_reg = fsl_micfil_readable_reg,
+ .volatile_reg = fsl_micfil_volatile_reg,
+ .writeable_reg = fsl_micfil_writeable_reg,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+/* END OF REGMAP */
+
+static irqreturn_t voice_detected_fn(int irq, void *devid)
+{
+ struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
+ struct device *dev = &micfil->pdev->dev;
+ int ret;
+
+ /* disable hwvad */
+ ret = disable_hwvad(dev, true);
+ if (ret)
+ dev_err(dev, "Failed to disable HWVAD module\n");
+
+ /* notify userspace that voice was detected */
+ kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t hwvad_isr(int irq, void *devid)
+{
+ struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
+ struct device *dev = &micfil->pdev->dev;
+ int ret;
+ u32 vad0_reg;
+
+ regmap_read(micfil->regmap, REG_MICFIL_VAD0_STAT, &vad0_reg);
+
+ /* The only difference between MICFIL_VAD0_STAT_EF and
+ * MICFIL_VAD0_STAT_IF is that the former requires Write
+ * 1 to Clear. Since both flags are set, it is enough
+ * to only read one of them
+ */
+ if (vad0_reg & MICFIL_VAD0_STAT_IF_MASK) {
+ /* Write 1 to clear */
+ regmap_write_bits(micfil->regmap, REG_MICFIL_VAD0_STAT,
+ MICFIL_VAD0_STAT_IF_MASK,
+ MICFIL_VAD0_STAT_IF);
+
+ /* disable hwvad interrupts */
+ ret = configure_hwvad_interrupts(dev, 0);
+ if (ret)
+ dev_err(dev, "Failed to disable interrupts\n");
+ }
+
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t hwvad_err_isr(int irq, void *devid)
+{
+ struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
+ struct device *dev = &micfil->pdev->dev;
+ u32 vad0_reg;
+
+ regmap_read(micfil->regmap, REG_MICFIL_VAD0_STAT, &vad0_reg);
+
+ if (vad0_reg & MICFIL_VAD0_STAT_INSATF_MASK)
+ dev_dbg(dev, "voice activity input overflow/underflow detected\n");
+
+ if (vad0_reg & MICFIL_VAD0_STAT_INITF_MASK)
+ dev_dbg(dev, "voice activity dectector is initializing\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t micfil_isr(int irq, void *devid)
+{
+ struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
+ struct platform_device *pdev = micfil->pdev;
+ u32 stat_reg;
+ u32 fifo_stat_reg;
+ u32 ctrl1_reg;
+ bool dma_enabled;
+ int i;
+
+ regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
+ regmap_read(micfil->regmap, REG_MICFIL_CTRL1, &ctrl1_reg);
+ regmap_read(micfil->regmap, REG_MICFIL_FIFO_STAT, &fifo_stat_reg);
+
+ dma_enabled = MICFIL_DMA_ENABLED(ctrl1_reg);
+
+ /* Channel 0-7 Output Data Flags */
+ for (i = 0; i < MICFIL_OUTPUT_CHANNELS; i++) {
+ if (stat_reg & MICFIL_STAT_CHXF_MASK(i))
+ dev_dbg(&pdev->dev,
+ "Data available in Data Channel %d\n", i);
+ /* if DMA is not enabled, field must be written with 1
+ * to clear
+ */
+ if (!dma_enabled)
+ regmap_write_bits(micfil->regmap,
+ REG_MICFIL_STAT,
+ MICFIL_STAT_CHXF_MASK(i),
+ 1);
+ }
+
+ for (i = 0; i < MICFIL_FIFO_NUM; i++) {
+ if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_OVER_MASK(i))
+ dev_dbg(&pdev->dev,
+ "FIFO Overflow Exception flag for channel %d\n",
+ i);
+
+ if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_UNDER_MASK(i))
+ dev_dbg(&pdev->dev,
+ "FIFO Underflow Exception flag for channel %d\n",
+ i);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t micfil_err_isr(int irq, void *devid)
+{
+ struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
+ struct platform_device *pdev = micfil->pdev;
+ u32 stat_reg;
+
+ regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
+
+ if (stat_reg & MICFIL_STAT_BSY_FIL_MASK)
+ dev_dbg(&pdev->dev, "isr: Decimation Filter is running\n");
+
+ if (stat_reg & MICFIL_STAT_FIR_RDY_MASK)
+ dev_dbg(&pdev->dev, "isr: FIR Filter Data ready\n");
+
+ if (stat_reg & MICFIL_STAT_LOWFREQF_MASK) {
+ dev_dbg(&pdev->dev, "isr: ipg_clk_app is too low\n");
+ regmap_write_bits(micfil->regmap, REG_MICFIL_STAT,
+ MICFIL_STAT_LOWFREQF_MASK, 1);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int fsl_set_clock_params(struct device *, unsigned int);
+
+static int enable_hwvad(struct device *dev, bool sync)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ int rate;
+ u32 state;
+
+ if (sync)
+ pm_runtime_get_sync(dev);
+
+ state = atomic_cmpxchg(&micfil->hwvad_state,
+ MICFIL_HWVAD_OFF,
+ MICFIL_HWVAD_ON);
+
+ /* we should not reenable when sync = true because
+ * this means enable was called for second time by
+ * user. However state = ON and sync = false can only
+ * occur when enable is called from system_resume. In
+ * this case we should enable the hwvad
+ */
+ if (sync && state == MICFIL_HWVAD_ON) {
+ dev_err(dev, "hwvad already on\n");
+ ret = -EBUSY;
+ goto enable_error;
+ }
+
+ if (micfil->vad_rate_index >= ARRAY_SIZE(micfil_hwvad_rate_ints)) {
+ dev_err(dev, "There are more select texts than rates\n");
+ ret = -EINVAL;
+ goto enable_error;
+ }
+
+ rate = micfil_hwvad_rate_ints[micfil->vad_rate_index];
+
+ /* This is required because if an arecord was done,
+ * suspend function will mark regmap as cache only
+ * and reads/writes in volatile regs will fail
+ */
+ regcache_cache_only(micfil->regmap, false);
+ regcache_mark_dirty(micfil->regmap);
+ regcache_sync(micfil->regmap);
+
+ ret = fsl_set_clock_params(dev, rate);
+ if (ret)
+ return ret;
+
+ ret = fsl_micfil_reset(dev);
+ if (ret)
+ return ret;
+
+ /* Initialize Hardware Voice Activity */
+ ret = init_hwvad(dev);
+
+ return ret;
+enable_error:
+ if (sync)
+ pm_runtime_put_sync(dev);
+ return ret;
+}
+
+static int disable_hwvad(struct device *dev, bool sync)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret = 0;
+ u32 state;
+
+ /* This is required because if an arecord was done,
+ * suspend function will mark regmap as cache only
+ * and reads/writes in volatile regs will fail
+ */
+ regcache_cache_only(micfil->regmap, false);
+ regcache_mark_dirty(micfil->regmap);
+ regcache_sync(micfil->regmap);
+
+ /* disable is called with sync = false only from
+ * system suspend and in this case, you should not
+ * change the hwvad_state so we know at system_resume
+ * to reenable hwvad
+ */
+ if (sync)
+ state = atomic_cmpxchg(&micfil->hwvad_state,
+ MICFIL_HWVAD_ON,
+ MICFIL_HWVAD_OFF);
+ else
+ state = atomic_read(&micfil->hwvad_state);
+
+ if (state == MICFIL_HWVAD_ON) {
+ /* Voice Activity Detector Reset */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_RST_SHIFT,
+ MICFIL_VAD0_CTRL1_RST);
+
+ /* Disable HWVAD */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_CTRL1,
+ MICFIL_VAD0_CTRL1_EN_MASK,
+ 0);
+
+ /* Disable Signal Filter */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_SCONFIG,
+ MICFIL_VAD0_SCONFIG_SFILEN_MASK,
+ 0);
+
+ /* Signal Maximum Enable */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_SCONFIG,
+ MICFIL_VAD0_SCONFIG_SMAXEN_MASK,
+ 0);
+
+ /* Enable pre-filter Noise & Signal */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_CTRL2,
+ MICFIL_VAD0_CTRL2_PREFEN_MASK,
+ 0);
+
+ /* Noise Decimation Enable */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_VAD0_NCONFIG,
+ MICFIL_VAD0_NCONFIG_NDECEN_MASK,
+ 0);
+
+ /* disable the module and clock only if recording
+ * is not done in parallel
+ */
+ state = atomic_read(&micfil->recording_state);
+ if (state == MICFIL_RECORDING_OFF) {
+ /* Disable MICFIL module */
+ ret |= regmap_update_bits(micfil->regmap,
+ REG_MICFIL_CTRL1,
+ MICFIL_CTRL1_PDMIEN_MASK,
+ 0);
+ }
+
+ } else {
+ ret = -EPERM;
+ dev_err(dev, "HWVAD is not enabled %d\n", ret);
+ }
+
+ if (sync)
+ pm_runtime_put_sync(dev);
+
+ return ret;
+}
+
+static ssize_t micfil_hwvad_handler(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct kobject *nand_kobj = kobj->parent;
+ struct device *dev = container_of(nand_kobj, struct device, kobj);
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ unsigned long vad_channel;
+ int ret;
+
+ ret = kstrtoul(buf, 16, &vad_channel);
+ if (ret < 0)
+ return -EINVAL;
+
+ if (vad_channel <= 7) {
+ micfil->vad_channel = vad_channel;
+ ret = enable_hwvad(dev, true);
+ if (ret)
+ dev_err(dev, "Failed to enable hwvad");
+ } else {
+ micfil->vad_channel = -1;
+ ret = disable_hwvad(dev, true);
+ }
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static struct kobj_attribute hwvad_en_attr = __ATTR(enable,
+ 0660,
+ NULL,
+ micfil_hwvad_handler);
+
+static int fsl_micfil_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *of_id;
+ struct fsl_micfil *micfil;
+ struct resource *res;
+ void __iomem *regs;
+ int ret, i;
+ unsigned long irqflag = 0;
+
+ micfil = devm_kzalloc(&pdev->dev, sizeof(*micfil), GFP_KERNEL);
+ if (!micfil)
+ return -ENOMEM;
+
+ micfil->pdev = pdev;
+ strncpy(micfil->name, np->name, sizeof(micfil->name) - 1);
+
+ of_id = of_match_device(fsl_micfil_dt_ids, &pdev->dev);
+ if (!of_id || !of_id->data)
+ return -EINVAL;
+
+ micfil->soc = of_id->data;
+
+ /* ipg_clk is used to control the registers
+ * ipg_clk_app is used to operate the filter
+ */
+ micfil->mclk = devm_clk_get(&pdev->dev, "ipg_clk_app");
+ if (IS_ERR(micfil->mclk)) {
+ dev_err(&pdev->dev, "failed to get core clock: %ld\n",
+ PTR_ERR(micfil->mclk));
+ return PTR_ERR(micfil->mclk);
+ }
+
+ /* get audio pll1 and pll2 */
+ micfil->clk_src[MICFIL_AUDIO_PLL1] = devm_clk_get(&pdev->dev, "pll8k");
+ if (IS_ERR(micfil->clk_src[MICFIL_AUDIO_PLL1]))
+ micfil->clk_src[MICFIL_AUDIO_PLL1] = NULL;
+
+ micfil->clk_src[MICFIL_AUDIO_PLL2] = devm_clk_get(&pdev->dev, "pll11k");
+ if (IS_ERR(micfil->clk_src[MICFIL_AUDIO_PLL2]))
+ micfil->clk_src[MICFIL_AUDIO_PLL2] = NULL;
+
+ micfil->clk_src[MICFIL_CLK_EXT3] = devm_clk_get(&pdev->dev, "clkext3");
+ if (IS_ERR(micfil->clk_src[MICFIL_CLK_EXT3]))
+ micfil->clk_src[MICFIL_CLK_EXT3] = NULL;
+
+ /* init regmap */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ micfil->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
+ "ipg_clk",
+ regs,
+ &fsl_micfil_regmap_config);
+ if (IS_ERR(micfil->regmap)) {
+ dev_err(&pdev->dev, "failed to init MICFIL regmap: %ld\n",
+ PTR_ERR(micfil->regmap));
+ return PTR_ERR(micfil->regmap);
+ }
+
+ /* dataline mask for RX */
+ ret = of_property_read_u32_index(np,
+ "fsl,dataline",
+ 0,
+ &micfil->dataline);
+ if (ret)
+ micfil->dataline = 1;
+
+ if (micfil->dataline & ~micfil->soc->dataline) {
+ dev_err(&pdev->dev, "dataline setting error, Mask is 0x%X\n",
+ micfil->soc->dataline);
+ return -EINVAL;
+ }
+
+ /* get IRQs */
+ for (i = 0; i < MICFIL_IRQ_LINES; i++) {
+ micfil->irq[i] = platform_get_irq(pdev, i);
+ dev_err(&pdev->dev, "GET IRQ: %d\n", micfil->irq[i]);
+ if (micfil->irq[i] < 0) {
+ dev_err(&pdev->dev, "no irq for node %s\n", pdev->name);
+ return micfil->irq[i];
+ }
+ }
+
+ if (of_property_read_bool(np, "fsl,shared-interrupt"))
+ irqflag = IRQF_SHARED;
+
+ /* Digital Microphone interface voice activity detector event
+ * interrupt - IRQ 44
+ */
+ ret = devm_request_threaded_irq(&pdev->dev, micfil->irq[0],
+ hwvad_isr, voice_detected_fn,
+ irqflag, micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim hwvad event irq %u\n",
+ micfil->irq[0]);
+ return ret;
+ }
+
+ /* Digital Microphone interface voice activity detector error
+ * interrupt - IRQ 45
+ */
+ ret = devm_request_irq(&pdev->dev, micfil->irq[1],
+ hwvad_err_isr, irqflag,
+ micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim hwvad error irq %u\n",
+ micfil->irq[1]);
+ return ret;
+ }
+
+ /* Digital Microphone interface interrupt - IRQ 109 */
+ ret = devm_request_irq(&pdev->dev, micfil->irq[2],
+ micfil_isr, irqflag,
+ micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim mic interface irq %u\n",
+ micfil->irq[2]);
+ return ret;
+ }
+
+ /* Digital Microphone interface error interrupt - IRQ 110 */
+ ret = devm_request_irq(&pdev->dev, micfil->irq[3],
+ micfil_err_isr, irqflag,
+ micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim mic interface error irq %u\n",
+ micfil->irq[3]);
+ return ret;
+ }
+
+ micfil->slave_mode = false;
+
+ micfil->dma_params_rx.chan_name = "rx";
+ micfil->dma_params_rx.addr = res->start + REG_MICFIL_DATACH0;
+ micfil->dma_params_rx.maxburst = MICFIL_DMA_MAXBURST_RX;
+
+ /* set default rate to first value in available vad rates */
+ micfil->vad_rate_index = 0;
+
+ platform_set_drvdata(pdev, micfil);
+
+ pm_runtime_enable(&pdev->dev);
+
+ ret = devm_snd_soc_register_component(&pdev->dev, &fsl_micfil_component,
+ &fsl_micfil_dai, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register component %s\n",
+ fsl_micfil_component.name);
+ return ret;
+ }
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to pcm register\n");
+ return ret;
+ }
+
+ /* create sysfs entry used to enable hwvad from userspace */
+ micfil->hwvad_kobject = kobject_create_and_add("hwvad",
+ &pdev->dev.kobj);
+ if (!micfil->hwvad_kobject)
+ return -ENOMEM;
+
+ ret = sysfs_create_file(micfil->hwvad_kobject,
+ &hwvad_en_attr.attr);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to create file for hwvad_enable\n");
+ kobject_put(micfil->hwvad_kobject);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ u32 state;
+
+ state = atomic_read(&micfil->hwvad_state);
+ if (state == MICFIL_HWVAD_ON)
+ return 0;
+
+ regcache_cache_only(micfil->regmap, true);
+
+ /* Disable the clock only if the hwvad is not enabled */
+ if (state == MICFIL_HWVAD_OFF)
+ clk_disable_unprepare(micfil->mclk);
+
+ return 0;
+}
+
+static int __maybe_unused fsl_micfil_runtime_resume(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ u32 state;
+
+ state = atomic_read(&micfil->hwvad_state);
+
+ /* enable mclk only if the hwvad is not enabled
+ * When hwvad is enabled, clock won't be disabled
+ * in suspend since hwvad and recording share the
+ * same clock
+ */
+ if (state == MICFIL_HWVAD_ON)
+ return 0;
+
+ ret = clk_prepare_enable(micfil->mclk);
+ if (ret < 0)
+ return ret;
+
+ regcache_cache_only(micfil->regmap, false);
+ regcache_mark_dirty(micfil->regmap);
+ regcache_sync(micfil->regmap);
+
+ return 0;
+}
+#endif /* CONFIG_PM*/
+
+#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused fsl_micfil_suspend(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ u32 state;
+
+ state = atomic_read(&micfil->hwvad_state);
+
+ if (state == MICFIL_HWVAD_ON) {
+ dev_err(dev, "Disabling hwvad on suspend");
+ ret = disable_hwvad(dev, false);
+ if (ret)
+ dev_warn(dev, "Failed to disable hwvad");
+ }
+
+ pm_runtime_force_suspend(dev);
+
+ return 0;
+}
+
+static int __maybe_unused fsl_micfil_resume(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ int ret;
+ u32 state;
+
+ pm_runtime_force_resume(dev);
+
+ state = atomic_read(&micfil->hwvad_state);
+ if (state == MICFIL_HWVAD_ON) {
+ dev_err(dev, "Enabling hwvad on resume");
+ ret = enable_hwvad(dev, false);
+ if (ret)
+ dev_warn(dev, "Failed to re-enable hwvad");
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops fsl_micfil_pm_ops = {
+ SET_RUNTIME_PM_OPS(fsl_micfil_runtime_suspend,
+ fsl_micfil_runtime_resume,
+ NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(fsl_micfil_suspend,
+ fsl_micfil_resume)
+};
+
+static struct platform_driver fsl_micfil_driver = {
+ .probe = fsl_micfil_probe,
+ .driver = {
+ .name = "fsl-micfil-dai",
+ .pm = &fsl_micfil_pm_ops,
+ .of_match_table = fsl_micfil_dt_ids,
+ },
+};
+module_platform_driver(fsl_micfil_driver);
+
+MODULE_AUTHOR("Cosmin-Gabriel Samoila <cosmin.samoila@xxxxxxx>");
+MODULE_DESCRIPTION("NXP PDM Microphone Interface (MICFIL) driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/fsl/fsl_micfil.h b/sound/soc/fsl/fsl_micfil.h
new file mode 100644
index 0000000..792187b
--- /dev/null
+++ b/sound/soc/fsl/fsl_micfil.h
@@ -0,0 +1,317 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * PDM Microphone Interface for the NXP i.MX SoC
+ * Copyright 2018 NXP
+ */
+
+#ifndef _FSL_MICFIL_H
+#define _FSL_MICFIL_H
+
+/* MICFIL Register Map */
+#define REG_MICFIL_CTRL1 0x00
+#define REG_MICFIL_CTRL2 0x04
+#define REG_MICFIL_STAT 0x08
+#define REG_MICFIL_FIFO_CTRL 0x10
+#define REG_MICFIL_FIFO_STAT 0x14
+#define REG_MICFIL_DATACH0 0x24
+#define REG_MICFIL_DATACH1 0x28
+#define REG_MICFIL_DATACH2 0x2C
+#define REG_MICFIL_DATACH3 0x30
+#define REG_MICFIL_DATACH4 0x34
+#define REG_MICFIL_DATACH5 0x38
+#define REG_MICFIL_DATACH6 0x3C
+#define REG_MICFIL_DATACH7 0x40
+#define REG_MICFIL_DC_CTRL 0x64
+#define REG_MICFIL_OUT_CTRL 0x74
+#define REG_MICFIL_OUT_STAT 0x7C
+#define REG_MICFIL_VAD0_CTRL1 0x90
+#define REG_MICFIL_VAD0_CTRL2 0x94
+#define REG_MICFIL_VAD0_STAT 0x98
+#define REG_MICFIL_VAD0_SCONFIG 0x9C
+#define REG_MICFIL_VAD0_NCONFIG 0xA0
+#define REG_MICFIL_VAD0_NDATA 0xA4
+#define REG_MICFIL_VAD0_ZCD 0xA8
+
+/* MICFIL Control Register 1 -- REG_MICFILL_CTRL1 0x00 */
+#define MICFIL_CTRL1_MDIS_SHIFT 31
+#define MICFIL_CTRL1_MDIS_MASK BIT(MICFIL_CTRL1_MDIS_SHIFT)
+#define MICFIL_CTRL1_MDIS BIT(MICFIL_CTRL1_MDIS_SHIFT)
+#define MICFIL_CTRL1_DOZEN_SHIFT 30
+#define MICFIL_CTRL1_DOZEN_MASK BIT(MICFIL_CTRL1_DOZEN_SHIFT)
+#define MICFIL_CTRL1_DOZEN BIT(MICFIL_CTRL1_DOZEN_SHIFT)
+#define MICFIL_CTRL1_PDMIEN_SHIFT 29
+#define MICFIL_CTRL1_PDMIEN_MASK BIT(MICFIL_CTRL1_PDMIEN_SHIFT)
+#define MICFIL_CTRL1_PDMIEN BIT(MICFIL_CTRL1_PDMIEN_SHIFT)
+#define MICFIL_CTRL1_DBG_SHIFT 28
+#define MICFIL_CTRL1_DBG_MASK BIT(MICFIL_CTRL1_DBG_SHIFT)
+#define MICFIL_CTRL1_DBG BIT(MICFIL_CTRL1_DBG_SHIFT)
+#define MICFIL_CTRL1_SRES_SHIFT 27
+#define MICFIL_CTRL1_SRES_MASK BIT(MICFIL_CTRL1_SRES_SHIFT)
+#define MICFIL_CTRL1_SRES BIT(MICFIL_CTRL1_SRES_SHIFT)
+#define MICFIL_CTRL1_DBGE_SHIFT 26
+#define MICFIL_CTRL1_DBGE_MASK BIT(MICFIL_CTRL1_DBGE_SHIFT)
+#define MICFIL_CTRL1_DBGE BIT(MICFIL_CTRL1_DBGE_SHIFT)
+#define MICFIL_CTRL1_DISEL_SHIFT 24
+#define MICFIL_CTRL1_DISEL_WIDTH 2
+#define MICFIL_CTRL1_DISEL_MASK ((BIT(MICFIL_CTRL1_DISEL_WIDTH) - 1) \
+ << MICFIL_CTRL1_DISEL_SHIFT)
+#define MICFIL_CTRL1_DISEL(v) (((v) << MICFIL_CTRL1_DISEL_SHIFT) \
+ & MICFIL_CTRL1_DISEL_MASK)
+#define MICFIL_CTRL1_ERREN_SHIFT 23
+#define MICFIL_CTRL1_ERREN_MASK BIT(MICFIL_CTRL1_ERREN_SHIFT)
+#define MICFIL_CTRL1_ERREN BIT(MICFIL_CTRL1_ERREN_SHIFT)
+#define MICFIL_CTRL1_CHEN_SHIFT 0
+#define MICFIL_CTRL1_CHEN_WIDTH 8
+#define MICFIL_CTRL1_CHEN_MASK(x) (BIT(x) << MICFIL_CTRL1_CHEN_SHIFT)
+#define MICFIL_CTRL1_CHEN(x) (MICFIL_CTRL1_CHEN_MASK(x))
+
+/* MICFIL Control Register 2 -- REG_MICFILL_CTRL2 0x04 */
+#define MICFIL_CTRL2_QSEL_SHIFT 25
+#define MICFIL_CTRL2_QSEL_WIDTH 3
+#define MICFIL_CTRL2_QSEL_MASK ((BIT(MICFIL_CTRL2_QSEL_WIDTH) - 1) \
+ << MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_HIGH_QUALITY BIT(MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_MEDIUM_QUALITY (0 << MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_LOW_QUALITY (7 << MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_VLOW0_QUALITY (6 << MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_VLOW1_QUALITY (5 << MICFIL_CTRL2_QSEL_SHIFT)
+#define MICFIL_VLOW2_QUALITY (4 << MICFIL_CTRL2_QSEL_SHIFT)
+
+#define MICFIL_CTRL2_CICOSR_SHIFT 16
+#define MICFIL_CTRL2_CICOSR_WIDTH 4
+#define MICFIL_CTRL2_CICOSR_MASK ((BIT(MICFIL_CTRL2_CICOSR_WIDTH) - 1) \
+ << MICFIL_CTRL2_CICOSR_SHIFT)
+#define MICFIL_CTRL2_CICOSR(v) (((v) << MICFIL_CTRL2_CICOSR_SHIFT) \
+ & MICFIL_CTRL2_CICOSR_MASK)
+#define MICFIL_CTRL2_CLKDIV_SHIFT 0
+#define MICFIL_CTRL2_CLKDIV_WIDTH 8
+#define MICFIL_CTRL2_CLKDIV_MASK ((BIT(MICFIL_CTRL2_CLKDIV_WIDTH) - 1) \
+ << MICFIL_CTRL2_CLKDIV_SHIFT)
+#define MICFIL_CTRL2_CLKDIV(v) (((v) << MICFIL_CTRL2_CLKDIV_SHIFT) \
+ & MICFIL_CTRL2_CLKDIV_MASK)
+
+/* MICFIL Status Register -- REG_MICFIL_STAT 0x08 */
+#define MICFIL_STAT_BSY_FIL_SHIFT 31
+#define MICFIL_STAT_BSY_FIL_MASK BIT(MICFIL_STAT_BSY_FIL_SHIFT)
+#define MICFIL_STAT_BSY_FIL BIT(MICFIL_STAT_BSY_FIL_SHIFT)
+#define MICFIL_STAT_FIR_RDY_SHIFT 30
+#define MICFIL_STAT_FIR_RDY_MASK BIT(MICFIL_STAT_FIR_RDY_SHIFT)
+#define MICFIL_STAT_FIR_RDY BIT(MICFIL_STAT_FIR_RDY_SHIFT)
+#define MICFIL_STAT_LOWFREQF_SHIFT 29
+#define MICFIL_STAT_LOWFREQF_MASK BIT(MICFIL_STAT_LOWFREQF_SHIFT)
+#define MICFIL_STAT_LOWFREQF BIT(MICFIL_STAT_LOWFREQF_SHIFT)
+#define MICFIL_STAT_CHXF_SHIFT(v) (v)
+#define MICFIL_STAT_CHXF_MASK(v) BIT(MICFIL_STAT_CHXF_SHIFT(v))
+#define MICFIL_STAT_CHXF(v) BIT(MICFIL_STAT_CHXF_SHIFT(v))
+
+/* MICFIL FIFO Control Register -- REG_MICFIL_FIFO_CTRL 0x10 */
+#define MICFIL_FIFO_CTRL_FIFOWMK_SHIFT 0
+#define MICFIL_FIFO_CTRL_FIFOWMK_WIDTH 3
+#define MICFIL_FIFO_CTRL_FIFOWMK_MASK ((BIT(MICFIL_FIFO_CTRL_FIFOWMK_WIDTH) - 1) \
+ << MICFIL_FIFO_CTRL_FIFOWMK_SHIFT)
+#define MICFIL_FIFO_CTRL_FIFOWMK(v) (((v) << MICFIL_FIFO_CTRL_FIFOWMK_SHIFT) \
+ & MICFIL_FIFO_CTRL_FIFOWMK_MASK)
+
+/* MICFIL FIFO Status Register -- REG_MICFIL_FIFO_STAT 0x14 */
+#define MICFIL_FIFO_STAT_FIFOX_OVER_SHIFT(v) (v)
+#define MICFIL_FIFO_STAT_FIFOX_OVER_MASK(v) BIT(MICFIL_FIFO_STAT_FIFOX_OVER_SHIFT(v))
+#define MICFIL_FIFO_STAT_FIFOX_UNDER_SHIFT(v) ((v) + 8)
+#define MICFIL_FIFO_STAT_FIFOX_UNDER_MASK(v) BIT(MICFIL_FIFO_STAT_FIFOX_UNDER_SHIFT(v))
+
+/* MICFIL HWVAD0 Control 1 Register -- REG_MICFIL_VAD0_CTRL1*/
+#define MICFIL_VAD0_CTRL1_CHSEL_SHIFT 24
+#define MICFIL_VAD0_CTRL1_CHSEL_WIDTH 3
+#define MICFIL_VAD0_CTRL1_CHSEL_MASK ((BIT(MICFIL_VAD0_CTRL1_CHSEL_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL1_CHSEL_SHIFT)
+#define MICFIL_VAD0_CTRL1_CHSEL(v) (((v) << MICFIL_VAD0_CTRL1_CHSEL_SHIFT) \
+ & MICFIL_VAD0_CTRL1_CHSEL_MASK)
+#define MICFIL_VAD0_CTRL1_CICOSR_SHIFT 16
+#define MICFIL_VAD0_CTRL1_CICOSR_WIDTH 4
+#define MICFIL_VAD0_CTRL1_CICOSR_MASK ((BIT(MICFIL_VAD0_CTRL1_CICOSR_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL1_CICOSR_SHIFT)
+#define MICFIL_VAD0_CTRL1_CICOSR(v) (((v) << MICFIL_VAD0_CTRL1_CICOSR_SHIFT) \
+ & MICFIL_VAD0_CTRL1_CICOSR_MASK)
+#define MICFIL_VAD0_CTRL1_INITT_SHIFT 8
+#define MICFIL_VAD0_CTRL1_INITT_WIDTH 5
+#define MICFIL_VAD0_CTRL1_INITT_MASK ((BIT(MICFIL_VAD0_CTRL1_INITT_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL1_INITT_SHIFT)
+#define MICFIL_VAD0_CTRL1_INITT(v) (((v) << MICFIL_VAD0_CTRL1_INITT_SHIFT) \
+ & MICFIL_VAD0_CTRL1_INITT_MASK)
+#define MICFIL_VAD0_CTRL1_ST10_SHIFT 4
+#define MICFIL_VAD0_CTRL1_ST10_MASK BIT(MICFIL_VAD0_CTRL1_ST10_SHIFT)
+#define MICFIL_VAD0_CTRL1_ST10 BIT(MICFIL_VAD0_CTRL1_ST10_SHIFT)
+#define MICFIL_VAD0_CTRL1_ERIE_SHIFT 3
+#define MICFIL_VAD0_CTRL1_ERIE_MASK BIT(MICFIL_VAD0_CTRL1_ERIE_SHIFT)
+#define MICFIL_VAD0_CTRL1_ERIE BIT(MICFIL_VAD0_CTRL1_ERIE_SHIFT)
+#define MICFIL_VAD0_CTRL1_IE_SHIFT 2
+#define MICFIL_VAD0_CTRL1_IE_MASK BIT(MICFIL_VAD0_CTRL1_IE_SHIFT)
+#define MICFIL_VAD0_CTRL1_IE BIT(MICFIL_VAD0_CTRL1_IE_SHIFT)
+#define MICFIL_VAD0_CTRL1_RST_SHIFT 1
+#define MICFIL_VAD0_CTRL1_RST_MASK BIT(MICFIL_VAD0_CTRL1_RST_SHIFT)
+#define MICFIL_VAD0_CTRL1_RST BIT(MICFIL_VAD0_CTRL1_RST_SHIFT)
+#define MICFIL_VAD0_CTRL1_EN_SHIFT 0
+#define MICFIL_VAD0_CTRL1_EN_MASK BIT(MICFIL_VAD0_CTRL1_EN_SHIFT)
+#define MICFIL_VAD0_CTRL1_EN BIT(MICFIL_VAD0_CTRL1_EN_SHIFT)
+
+/* MICFIL HWVAD0 Control 2 Register -- REG_MICFIL_VAD0_CTRL2*/
+#define MICFIL_VAD0_CTRL2_FRENDIS_SHIFT 31
+#define MICFIL_VAD0_CTRL2_FRENDIS_MASK BIT(MICFIL_VAD0_CTRL2_FRENDIS_SHIFT)
+#define MICFIL_VAD0_CTRL2_FRENDIS BIT(MICFIL_VAD0_CTRL2_FRENDIS_SHIFT)
+#define MICFIL_VAD0_CTRL2_PREFEN_SHIFT 30
+#define MICFIL_VAD0_CTRL2_PREFEN_MASK BIT(MICFIL_VAD0_CTRL2_PREFEN_SHIFT)
+#define MICFIL_VAD0_CTRL2_PREFEN BIT(MICFIL_VAD0_CTRL2_PREFEN_SHIFT)
+#define MICFIL_VAD0_CTRL2_FOUTDIS_SHIFT 28
+#define MICFIL_VAD0_CTRL2_FOUTDIS_MASK BIT(MICFIL_VAD0_CTRL2_FOUTDIS_SHIFT)
+#define MICFIL_VAD0_CTRL2_FOUTDIS BIT(MICFIL_VAD0_CTRL2_FOUTDIS_SHIFT)
+#define MICFIL_VAD0_CTRL2_FRAMET_SHIFT 16
+#define MICFIL_VAD0_CTRL2_FRAMET_WIDTH 6
+#define MICFIL_VAD0_CTRL2_FRAMET_MASK ((BIT(MICFIL_VAD0_CTRL2_FRAMET_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL2_FRAMET_SHIFT)
+#define MICFIL_VAD0_CTRL2_FRAMET(v) (((v) << MICFIL_VAD0_CTRL2_FRAMET_SHIFT) \
+ & MICFIL_VAD0_CTRL2_FRAMET_MASK)
+#define MICFIL_VAD0_CTRL2_INPGAIN_SHIFT 8
+#define MICFIL_VAD0_CTRL2_INPGAIN_WIDTH 4
+#define MICFIL_VAD0_CTRL2_INPGAIN_MASK ((BIT(MICFIL_VAD0_CTRL2_INPGAIN_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL2_INPGAIN_SHIFT)
+#define MICFIL_VAD0_CTRL2_INPGAIN(v) (((v) << MICFIL_VAD0_CTRL2_INPGAIN_SHIFT) \
+ & MICFIL_VAD0_CTRL2_INPGAIN_MASK)
+#define MICFIL_VAD0_CTRL2_HPF_SHIFT 0
+#define MICFIL_VAD0_CTRL2_HPF_WIDTH 2
+#define MICFIL_VAD0_CTRL2_HPF_MASK ((BIT(MICFIL_VAD0_CTRL2_HPF_WIDTH) - 1) \
+ << MICFIL_VAD0_CTRL2_HPF_SHIFT)
+#define MICFIL_VAD0_CTRL2_HPF(v) (((v) << MICFIL_VAD0_CTRL2_HPF_SHIFT) \
+ & MICFIL_VAD0_CTRL2_HPF_MASK)
+
+/* MICFIL HWVAD0 Signal CONFIG Register -- REG_MICFIL_VAD0_SCONFIG */
+#define MICFIL_VAD0_SCONFIG_SFILEN_SHIFT 31
+#define MICFIL_VAD0_SCONFIG_SFILEN_MASK BIT(MICFIL_VAD0_SCONFIG_SFILEN_SHIFT)
+#define MICFIL_VAD0_SCONFIG_SFILEN BIT(MICFIL_VAD0_SCONFIG_SFILEN_SHIFT)
+#define MICFIL_VAD0_SCONFIG_SMAXEN_SHIFT 30
+#define MICFIL_VAD0_SCONFIG_SMAXEN_MASK BIT(MICFIL_VAD0_SCONFIG_SMAXEN_SHIFT)
+#define MICFIL_VAD0_SCONFIG_SMAXEN BIT(MICFIL_VAD0_SCONFIG_SMAXEN_SHIFT)
+#define MICFIL_VAD0_SCONFIG_SGAIN_SHIFT 0
+#define MICFIL_VAD0_SCONFIG_SGAIN_WIDTH 4
+#define MICFIL_VAD0_SCONFIG_SGAIN_MASK ((BIT(MICFIL_VAD0_SCONFIG_SGAIN_WIDTH) - 1) \
+ << MICFIL_VAD0_SCONFIG_SGAIN_SHIFT)
+#define MICFIL_VAD0_SCONFIG_SGAIN(v) (((v) << MICFIL_VAD0_SCONFIG_SGAIN_SHIFT) \
+ & MICFIL_VAD0_SCONFIG_SGAIN_MASK)
+
+/* MICFIL HWVAD0 Noise CONFIG Register -- REG_MICFIL_VAD0_NCONFIG */
+#define MICFIL_VAD0_NCONFIG_NFILAUT_SHIFT 31
+#define MICFIL_VAD0_NCONFIG_NFILAUT_MASK BIT(MICFIL_VAD0_NCONFIG_NFILAUT_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NFILAUT BIT(MICFIL_VAD0_NCONFIG_NFILAUT_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NMINEN_SHIFT 30
+#define MICFIL_VAD0_NCONFIG_NMINEN_MASK BIT(MICFIL_VAD0_NCONFIG_NMINEN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NMINEN BIT(MICFIL_VAD0_NCONFIG_NMINEN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NDECEN_SHIFT 29
+#define MICFIL_VAD0_NCONFIG_NDECEN_MASK BIT(MICFIL_VAD0_NCONFIG_NDECEN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NDECEN BIT(MICFIL_VAD0_NCONFIG_NDECEN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NOREN_SHIFT 28
+#define MICFIL_VAD0_NCONFIG_NOREN BIT(MICFIL_VAD0_NCONFIG_NOREN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NFILADJ_SHIFT 8
+#define MICFIL_VAD0_NCONFIG_NFILADJ_WIDTH 5
+#define MICFIL_VAD0_NCONFIG_NFILADJ_MASK ((BIT(MICFIL_VAD0_NCONFIG_NFILADJ_WIDTH) - 1) \
+ << MICFIL_VAD0_NCONFIG_NFILADJ_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NFILADJ(v) (((v) << MICFIL_VAD0_NCONFIG_NFILADJ_SHIFT) \
+ & MICFIL_VAD0_NCONFIG_NFILADJ_MASK)
+#define MICFIL_VAD0_NCONFIG_NGAIN_SHIFT 0
+#define MICFIL_VAD0_NCONFIG_NGAIN_WIDTH 4
+#define MICFIL_VAD0_NCONFIG_NGAIN_MASK ((BIT(MICFIL_VAD0_NCONFIG_NGAIN_WIDTH) - 1) \
+ << MICFIL_VAD0_NCONFIG_NGAIN_SHIFT)
+#define MICFIL_VAD0_NCONFIG_NGAIN(v) (((v) << MICFIL_VAD0_NCONFIG_NGAIN_SHIFT) \
+ & MICFIL_VAD0_NCONFIG_NGAIN_MASK)
+
+/* MICFIL HWVAD0 Zero-Crossing Detector - REG_MICFIL_VAD0_ZCD */
+#define MICFIL_VAD0_ZCD_ZCDTH_SHIFT 16
+#define MICFIL_VAD0_ZCD_ZCDTH_WIDTH 10
+#define MICFIL_VAD0_ZCD_ZCDTH_MASK ((BIT(MICFIL_VAD0_ZCD_ZCDTH_WIDTH) - 1) \
+ << MICFIL_VAD0_ZCD_ZCDTH_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDTH(v) (((v) << MICFIL_VAD0_ZCD_ZCDTH_SHIFT)\
+ & MICFIL_VAD0_ZCD_ZCDTH_MASK)
+#define MICFIL_VAD0_ZCD_ZCDADJ_SHIFT 8
+#define MICFIL_VAD0_ZCD_ZCDADJ_WIDTH 4
+#define MICFIL_VAD0_ZCD_ZCDADJ_MASK ((BIT(MICFIL_VAD0_ZCD_ZCDADJ_WIDTH) - 1)\
+ << MICFIL_VAD0_ZCD_ZCDADJ_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDADJ(v) (((v) << MICFIL_VAD0_ZCD_ZCDADJ_SHIFT)\
+ & MICFIL_VAD0_ZCD_ZCDADJ_MASK)
+#define MICFIL_VAD0_ZCD_ZCDAND_SHIFT 4
+#define MICFIL_VAD0_ZCD_ZCDAND_MASK BIT(MICFIL_VAD0_ZCD_ZCDAND_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDAND BIT(MICFIL_VAD0_ZCD_ZCDAND_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDAUT_SHIFT 2
+#define MICFIL_VAD0_ZCD_ZCDAUT_MASK BIT(MICFIL_VAD0_ZCD_ZCDAUT_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDAUT BIT(MICFIL_VAD0_ZCD_ZCDAUT_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDEN_SHIFT 0
+#define MICFIL_VAD0_ZCD_ZCDEN_MASK BIT(MICFIL_VAD0_ZCD_ZCDEN_SHIFT)
+#define MICFIL_VAD0_ZCD_ZCDEN BIT(MICFIL_VAD0_ZCD_ZCDEN_SHIFT)
+
+/* MICFIL HWVAD0 Status Register - REG_MICFIL_VAD0_STAT */
+#define MICFIL_VAD0_STAT_INITF_SHIFT 31
+#define MICFIL_VAD0_STAT_INITF_MASK BIT(MICFIL_VAD0_STAT_INITF_SHIFT)
+#define MICFIL_VAD0_STAT_INITF BIT(MICFIL_VAD0_STAT_INITF_SHIFT)
+#define MICFIL_VAD0_STAT_INSATF_SHIFT 16
+#define MICFIL_VAD0_STAT_INSATF_MASK BIT(MICFIL_VAD0_STAT_INSATF_SHIFT)
+#define MICFIL_VAD0_STAT_INSATF BIT(MICFIL_VAD0_STAT_INSATF_SHIFT)
+#define MICFIL_VAD0_STAT_EF_SHIFT 15
+#define MICFIL_VAD0_STAT_EF_MASK BIT(MICFIL_VAD0_STAT_EF_SHIFT)
+#define MICFIL_VAD0_STAT_EF BIT(MICFIL_VAD0_STAT_EF_SHIFT)
+#define MICFIL_VAD0_STAT_IF_SHIFT 0
+#define MICFIL_VAD0_STAT_IF_MASK BIT(MICFIL_VAD0_STAT_IF_SHIFT)
+#define MICFIL_VAD0_STAT_IF BIT(MICFIL_VAD0_STAT_IF_SHIFT)
+
+/* HWVAD Constants */
+#define MICFIL_HWVAD_ENVELOPE_MODE 0
+#define MICFIL_HWVAD_ENERGY_MODE 1
+#define MICFIL_HWVAD_INIT_FRAMES 10
+#define MICFIL_HWVAD_INPGAIN 0
+#define MICFIL_HWVAD_SGAIN 6
+#define MICFIL_HWVAD_NGAIN 3
+#define MICFIL_HWVAD_NFILADJ 0
+#define MICFIL_HWVAD_ZCDADJ (1 << (MICFIL_VAD0_ZCD_ZCDADJ_WIDTH - 2))
+#define MICFIL_HWVAD_ZCDTH 10 /* initial threshold value */
+#define MICFIL_HWVAD_ZCDOR 0
+#define MICFIL_HWVAD_ZCDAND 1
+#define MICFIL_HWVAD_ZCD_MANUAL 0
+#define MICFIL_HWVAD_ZCD_AUTO 1
+#define MICFIL_HWVAD_HPF_BYPASS 0
+#define MICFIL_HWVAD_HPF_1750HZ 1
+#define MICFIL_HWVAD_HPF_215HZ 2
+#define MICFIL_HWVAD_HPF_102HZ 3
+#define MICFIL_HWVAD_FRAMET_DEFAULT 10
+
+/* MICFIL Output Control Register */
+#define MICFIL_OUTGAIN_CHX_SHIFT(v) (4 * (v))
+
+/* Constants */
+#define MICFIL_DMA_IRQ_DISABLED(v) ((v) & MICFIL_CTRL1_DISEL_MASK)
+#define MICFIL_DMA_ENABLED(v) ((0x1 << MICFIL_CTRL1_DISEL_SHIFT) \
+ == ((v) & MICFIL_CTRL1_DISEL_MASK))
+#define MICFIL_IRQ_ENABLED(v) ((0x2 << MICFIL_CTRL1_DISEL_SHIFT) \
+ == ((v) & MICFIL_CTRL1_DISEL_MASK))
+#define MICFIL_OUTPUT_CHANNELS 8
+#define MICFIL_FIFO_NUM 8
+
+#define FIFO_PTRWID 3
+#define FIFO_LEN BIT(FIFO_PTRWID)
+
+#define MICFIL_IRQ_LINES 4
+#define MICFIL_MAX_RETRY 25
+#define MICFIL_SLEEP_MIN 90000 /* in us */
+#define MICFIL_SLEEP_MAX 100000 /* in us */
+#define MICFIL_DMA_MAXBURST_RX 6
+#define MICFIL_CTRL2_OSR_DEFAULT (0 << MICFIL_CTRL2_CICOSR_SHIFT)
+#define MICFIL_DEFAULT_RATE 48000
+#define MICFIL_CLK_SRC_NUM 3
+#define MICFIL_CLK_AUTO 0
+
+/* clock source ids */
+#define MICFIL_AUDIO_PLL1 0
+#define MICFIL_AUDIO_PLL2 1
+#define MICFIL_CLK_EXT3 2
+
+/* States of micfil */
+#define MICFIL_HWVAD_OFF 0
+#define MICFIL_HWVAD_ON 1
+#define MICFIL_RECORDING_OFF 0
+#define MICFIL_RECORDING_ON 1
+
+#endif /* _FSL_MICFIL_H */
--
2.7.4
