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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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The Hardware Voice Activity Detector (HWVAD) is a block responsible for detect voice activity in a channel selected by the user. It can be configured in Envelope-based or Energy-based mode. There are additional two interrupts for HWVAD, one is event interrupt, another is error interrupt. Enable hwvad in parallel with recording. when voice activity detected, HWVAD will be disabled and alsa control notification is triggerred. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Link: https://lore.kernel.org/r/1663925494-9941-1-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
149 lines
5 KiB
C
149 lines
5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* PDM Microphone Interface for the NXP i.MX SoC
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* Copyright 2018 NXP
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*/
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#ifndef _FSL_MICFIL_H
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#define _FSL_MICFIL_H
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/* MICFIL Register Map */
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#define REG_MICFIL_CTRL1 0x00
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#define REG_MICFIL_CTRL2 0x04
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#define REG_MICFIL_STAT 0x08
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#define REG_MICFIL_FIFO_CTRL 0x10
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#define REG_MICFIL_FIFO_STAT 0x14
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#define REG_MICFIL_DATACH0 0x24
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#define REG_MICFIL_DATACH1 0x28
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#define REG_MICFIL_DATACH2 0x2C
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#define REG_MICFIL_DATACH3 0x30
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#define REG_MICFIL_DATACH4 0x34
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#define REG_MICFIL_DATACH5 0x38
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#define REG_MICFIL_DATACH6 0x3C
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#define REG_MICFIL_DATACH7 0x40
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#define REG_MICFIL_DC_CTRL 0x64
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#define REG_MICFIL_OUT_CTRL 0x74
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#define REG_MICFIL_OUT_STAT 0x7C
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#define REG_MICFIL_VAD0_CTRL1 0x90
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#define REG_MICFIL_VAD0_CTRL2 0x94
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#define REG_MICFIL_VAD0_STAT 0x98
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#define REG_MICFIL_VAD0_SCONFIG 0x9C
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#define REG_MICFIL_VAD0_NCONFIG 0xA0
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#define REG_MICFIL_VAD0_NDATA 0xA4
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#define REG_MICFIL_VAD0_ZCD 0xA8
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/* MICFIL Control Register 1 -- REG_MICFILL_CTRL1 0x00 */
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#define MICFIL_CTRL1_MDIS BIT(31)
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#define MICFIL_CTRL1_DOZEN BIT(30)
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#define MICFIL_CTRL1_PDMIEN BIT(29)
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#define MICFIL_CTRL1_DBG BIT(28)
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#define MICFIL_CTRL1_SRES BIT(27)
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#define MICFIL_CTRL1_DBGE BIT(26)
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#define MICFIL_CTRL1_DISEL_DISABLE 0
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#define MICFIL_CTRL1_DISEL_DMA 1
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#define MICFIL_CTRL1_DISEL_IRQ 2
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#define MICFIL_CTRL1_DISEL GENMASK(25, 24)
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#define MICFIL_CTRL1_ERREN BIT(23)
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#define MICFIL_CTRL1_CHEN(ch) BIT(ch)
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/* MICFIL Control Register 2 -- REG_MICFILL_CTRL2 0x04 */
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#define MICFIL_CTRL2_QSEL_SHIFT 25
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#define MICFIL_CTRL2_QSEL GENMASK(27, 25)
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#define MICFIL_QSEL_MEDIUM_QUALITY 0
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#define MICFIL_QSEL_HIGH_QUALITY 1
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#define MICFIL_QSEL_LOW_QUALITY 7
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#define MICFIL_QSEL_VLOW0_QUALITY 6
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#define MICFIL_QSEL_VLOW1_QUALITY 5
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#define MICFIL_QSEL_VLOW2_QUALITY 4
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#define MICFIL_CTRL2_CICOSR GENMASK(19, 16)
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#define MICFIL_CTRL2_CLKDIV GENMASK(7, 0)
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/* MICFIL Status Register -- REG_MICFIL_STAT 0x08 */
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#define MICFIL_STAT_BSY_FIL BIT(31)
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#define MICFIL_STAT_FIR_RDY BIT(30)
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#define MICFIL_STAT_LOWFREQF BIT(29)
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#define MICFIL_STAT_CHXF(ch) BIT(ch)
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/* MICFIL FIFO Control Register -- REG_MICFIL_FIFO_CTRL 0x10 */
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#define MICFIL_FIFO_CTRL_FIFOWMK GENMASK(2, 0)
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/* MICFIL FIFO Status Register -- REG_MICFIL_FIFO_STAT 0x14 */
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#define MICFIL_FIFO_STAT_FIFOX_OVER(ch) BIT(ch)
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#define MICFIL_FIFO_STAT_FIFOX_UNDER(ch) BIT((ch) + 8)
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/* MICFIL DC Remover Control Register -- REG_MICFIL_DC_CTRL */
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#define MICFIL_DC_CTRL_CONFIG GENMASK(15, 0)
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#define MICFIL_DC_CHX_SHIFT(ch) ((ch) << 1)
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#define MICFIL_DC_CHX(ch) GENMASK((((ch) << 1) + 1), ((ch) << 1))
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#define MICFIL_DC_CUTOFF_21HZ 0
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#define MICFIL_DC_CUTOFF_83HZ 1
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#define MICFIL_DC_CUTOFF_152Hz 2
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#define MICFIL_DC_BYPASS 3
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/* MICFIL HWVAD0 Control 1 Register -- REG_MICFIL_VAD0_CTRL1*/
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#define MICFIL_VAD0_CTRL1_CHSEL GENMASK(26, 24)
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#define MICFIL_VAD0_CTRL1_CICOSR GENMASK(19, 16)
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#define MICFIL_VAD0_CTRL1_INITT GENMASK(12, 8)
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#define MICFIL_VAD0_CTRL1_ST10 BIT(4)
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#define MICFIL_VAD0_CTRL1_ERIE BIT(3)
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#define MICFIL_VAD0_CTRL1_IE BIT(2)
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#define MICFIL_VAD0_CTRL1_RST BIT(1)
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#define MICFIL_VAD0_CTRL1_EN BIT(0)
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/* MICFIL HWVAD0 Control 2 Register -- REG_MICFIL_VAD0_CTRL2*/
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#define MICFIL_VAD0_CTRL2_FRENDIS BIT(31)
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#define MICFIL_VAD0_CTRL2_PREFEN BIT(30)
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#define MICFIL_VAD0_CTRL2_FOUTDIS BIT(28)
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#define MICFIL_VAD0_CTRL2_FRAMET GENMASK(21, 16)
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#define MICFIL_VAD0_CTRL2_INPGAIN GENMASK(11, 8)
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#define MICFIL_VAD0_CTRL2_HPF GENMASK(1, 0)
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/* MICFIL HWVAD0 Signal CONFIG Register -- REG_MICFIL_VAD0_SCONFIG */
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#define MICFIL_VAD0_SCONFIG_SFILEN BIT(31)
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#define MICFIL_VAD0_SCONFIG_SMAXEN BIT(30)
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#define MICFIL_VAD0_SCONFIG_SGAIN GENMASK(3, 0)
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/* MICFIL HWVAD0 Noise CONFIG Register -- REG_MICFIL_VAD0_NCONFIG */
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#define MICFIL_VAD0_NCONFIG_NFILAUT BIT(31)
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#define MICFIL_VAD0_NCONFIG_NMINEN BIT(30)
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#define MICFIL_VAD0_NCONFIG_NDECEN BIT(29)
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#define MICFIL_VAD0_NCONFIG_NOREN BIT(28)
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#define MICFIL_VAD0_NCONFIG_NFILADJ GENMASK(12, 8)
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#define MICFIL_VAD0_NCONFIG_NGAIN GENMASK(3, 0)
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/* MICFIL HWVAD0 Zero-Crossing Detector - REG_MICFIL_VAD0_ZCD */
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#define MICFIL_VAD0_ZCD_ZCDTH GENMASK(25, 16)
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#define MICFIL_VAD0_ZCD_ZCDADJ GENMASK(11, 8)
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#define MICFIL_VAD0_ZCD_ZCDAND BIT(4)
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#define MICFIL_VAD0_ZCD_ZCDAUT BIT(2)
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#define MICFIL_VAD0_ZCD_ZCDEN BIT(0)
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/* MICFIL HWVAD0 Status Register - REG_MICFIL_VAD0_STAT */
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#define MICFIL_VAD0_STAT_INITF BIT(31)
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#define MICFIL_VAD0_STAT_INSATF BIT(16)
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#define MICFIL_VAD0_STAT_EF BIT(15)
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#define MICFIL_VAD0_STAT_IF BIT(0)
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/* MICFIL Output Control Register */
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#define MICFIL_OUTGAIN_CHX_SHIFT(v) (4 * (v))
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/* Constants */
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#define MICFIL_OUTPUT_CHANNELS 8
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#define MICFIL_FIFO_NUM 8
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#define FIFO_PTRWID 3
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#define FIFO_LEN BIT(FIFO_PTRWID)
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#define MICFIL_IRQ_LINES 4
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#define MICFIL_MAX_RETRY 25
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#define MICFIL_SLEEP_MIN 90000 /* in us */
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#define MICFIL_SLEEP_MAX 100000 /* in us */
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#define MICFIL_DMA_MAXBURST_RX 6
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/* HWVAD Constants */
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#define MICFIL_HWVAD_ENVELOPE_MODE 0
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#define MICFIL_HWVAD_ENERGY_MODE 1
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#endif /* _FSL_MICFIL_H */
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