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.
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 | 826 +++++++++++++++++++++++++++++++++++++++++++++
sound/soc/fsl/fsl_micfil.h | 283 ++++++++++++++++
4 files changed, 1120 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 2e75b5b..7b1d997 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..40c07e7
--- /dev/null
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -0,0 +1,826 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright 2018 NXP
+
+#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 snd_dmaengine_dai_dma_data dma_params_rx;
+ 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];
+};
+
+struct fsl_micfil_soc_data {
+ unsigned int fifos;
+ unsigned int fifo_depth;
+ unsigned int dataline;
+ bool imx;
+};
+
+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 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 DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0);
+
+static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
+ SOC_SINGLE_SX_TLV("CH0 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(0), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH1 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(1), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH2 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(2), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH3 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(3), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH4 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(4), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH5 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(5), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH6 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(6), 0xF, 0x7, gain_tlv),
+ SOC_SINGLE_SX_TLV("CH7 Volume", REG_MICFIL_OUT_CTRL,
+ MICFIL_OUTGAIN_CHX_SHIFT(7), 0xF, 0x7, gain_tlv),
+ SOC_ENUM_EXT("MICFIL Quality Select",
+ fsl_micfil_quality_enum,
+ snd_soc_get_enum_double, snd_soc_put_enum_double),
+};
+
+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;
+}
+
+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;
+}
+
+/* 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;
+}
+
+static int fsl_micfil_set_mclk_rate(struct fsl_micfil *micfil,
+ unsigned int freq)
+{
+ struct device *dev = &micfil->pdev->dev;
+ int 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, 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;
+ int ret;
+
+ /* 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_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, 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 struct snd_soc_dai_ops fsl_micfil_dai_ops = {
+ .startup = fsl_micfil_startup,
+ .trigger = fsl_micfil_trigger,
+ .hw_params = fsl_micfil_hw_params,
+ .set_sysclk = fsl_micfil_set_dai_sysclk,
+};
+
+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_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_STAT:
+ case REG_MICFIL_VAD0_NDATA:
+ 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 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_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);
+ }
+
+ /* 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 interrupt - IRQ 109 */
+ ret = devm_request_irq(&pdev->dev, micfil->irq[0],
+ micfil_isr, irqflag,
+ micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim mic interface irq %u\n",
+ micfil->irq[0]);
+ return ret;
+ }
+
+ /* Digital Microphone interface error interrupt - IRQ 110 */
+ ret = devm_request_irq(&pdev->dev, micfil->irq[1],
+ micfil_err_isr, irqflag,
+ micfil->name, micfil);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim mic interface error irq %u\n",
+ micfil->irq[1]);
+ return ret;
+ }
+
+ 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;
+
+
+ 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;
+}
+
+#ifdef CONFIG_PM
+static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+
+ regcache_cache_only(micfil->regmap, true);
+
+ 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;
+
+ 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)
+{
+ pm_runtime_force_suspend(dev);
+
+ return 0;
+}
+
+static int __maybe_unused fsl_micfil_resume(struct device *dev)
+{
+ pm_runtime_force_resume(dev);
+
+ 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..bac825c
--- /dev/null
+++ b/sound/soc/fsl/fsl_micfil.h
@@ -0,0 +1,283 @@
+/* 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)
+
+/* 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 2
+#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)
+
+#endif /* _FSL_MICFIL_H */
--
2.7.4
