Merged in alinjerpelea/nuttx (pull request #1046)

boards: spresense: add audio implementation

* boards: arm: cxd56xx: add audio implementation

    Add the board audio control implemantation

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

* boards: arm: cxd56xx: update audio defconfig

    Small updates to build the platforms specific audio driver

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

* boards: arm: cxd56xx: drivers: add audio implementation

    Add the audio implementation for CXD56XX chip

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

* boards: arm: cxd56xx: fix Load switch GPIO

    During the initial bringup the grong GPIO was set.

    Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

boards/arm/cxd56xx/common/src/Make.defs

@@ -34,6 +34,10 @@
 
 CSRCS += cxd56_boot.c
 
+ifeq ($(CONFIG_CXD56_AUDIO), y)
+CSRCS += cxd56_audio.c
+endif
+
 ifeq ($(CONFIG_BOARDCTL_UNIQUEID),y)
 CSRCS += cxd56_uid.c
 endif

boards/arm/cxd56xx/common/src/cxd56_audio.c

@@ -0,0 +1,390 @@
+/****************************************************************************
+ * boards/arm/cxd56xx/common/src/cxd56_audio.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+
+#include "chip.h"
+#include "up_arch.h"
+
+#include <arch/board/board.h>
+#include "cxd56_pmic.h"
+#include "cxd56_gpio.h"
+#include "cxd56_pinconfig.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Check if the following are defined in the board.h */
+
+#ifndef CXD5247_XRST
+#  error "CXD5247_XRST must be defined in board.h !!"
+#endif
+#ifndef CXD5247_AVDD
+#  error "CXD5247_AVDD must be defined in board.h !!"
+#endif
+#ifndef CXD5247_DVDD
+#  error "CXD5247_DVDD must be defined in board.h !!"
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: check_pin_i2s_mode
+ *
+ * Description:
+ *   Check if the pin is I2S.
+ *
+ ****************************************************************************/
+
+static bool check_pin_i2s_mode(uint32_t pin)
+{
+  bool                res = false;
+  cxd56_pin_status_t  pstat;
+
+  if (cxd56_pin_status(pin, &pstat) >= 0)
+    {
+      if (pstat.mode == 1)
+        {
+          res = true;
+        }
+    }
+
+  return res;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_aca_power_control
+ *
+ * Description:
+ *   Power on/off the Aca device on the board.
+ *
+ ****************************************************************************/
+
+int board_aca_power_control(int target, bool en)
+{
+  int ret = 0;
+  static int first = 1;
+  static bool avdd_on = false;
+  static bool dvdd_on = false;
+
+  if (first)
+    {
+      /* gpio configuration (output disabled yet) */
+
+      cxd56_gpio_config(CXD5247_XRST, false);
+
+      first = 0;
+    }
+
+  if (en)
+    {
+      if (!dvdd_on && (target & CXD5247_DVDD))
+        {
+          /* reset assert */
+
+          cxd56_gpio_write(CXD5247_XRST, false);
+        }
+
+      /* power on */
+
+      if (!avdd_on && (target & CXD5247_AVDD))
+        {
+          board_power_control(POWER_AUDIO_AVDD, true);
+          avdd_on = true;
+        }
+      if (!dvdd_on && (target & CXD5247_DVDD))
+        {
+          board_power_control(POWER_AUDIO_DVDD, true);
+          dvdd_on = true;
+
+          /* reset release */
+
+          cxd56_gpio_write(CXD5247_XRST, true);
+        }
+    }
+  else
+    {
+      if (dvdd_on && (target & CXD5247_DVDD))
+        {
+          /* reset assert */
+
+          cxd56_gpio_write(CXD5247_XRST, false);
+        }
+
+      /* power off */
+
+      if (avdd_on && (target & CXD5247_AVDD))
+        {
+          board_power_control(POWER_AUDIO_AVDD, false);
+          avdd_on = false;
+        }
+      if (dvdd_on && (target & CXD5247_DVDD))
+        {
+          board_power_control(POWER_AUDIO_DVDD, false);
+          dvdd_on = false;
+        }
+    }
+  return ret;
+}
+
+/****************************************************************************
+ * Name: board_aca_power_monitor
+ *
+ * Description:
+ *   Get status of Power on/off the Aca device on the board.
+ *
+ ****************************************************************************/
+
+bool board_aca_power_monitor(int target)
+{
+  bool avdd_stat = true;
+  bool dvdd_stat = true;
+
+  if (target & CXD5247_AVDD)
+    {
+      avdd_stat = board_power_monitor(POWER_AUDIO_AVDD);
+    }
+  if (target & CXD5247_DVDD)
+    {
+      dvdd_stat = board_power_monitor(POWER_AUDIO_DVDD);
+    }
+
+  return avdd_stat && dvdd_stat;
+}
+
+#define MUTE_OFF_DELAY  (1250 * 1000) /* ms */
+#define MUTE_ON_DELAY   (150 * 1000) /* ms */
+
+/****************************************************************************
+ * Name: board_external_amp_mute_control
+ *
+ * Description:
+ *   External Amp. Mute on/off.
+ *    true:  Mute on
+ *    false: Mute off
+ *
+ ****************************************************************************/
+
+int board_external_amp_mute_control(bool en)
+{
+  int ret = 0;
+
+  if (en)
+    {
+      /* Mute ON */
+
+      ret = board_power_control(POWER_AUDIO_MUTE, false);
+      usleep(MUTE_ON_DELAY);
+    }
+  else
+    {
+      /* Mute OFF */
+
+      usleep(MUTE_OFF_DELAY);
+      ret = board_power_control(POWER_AUDIO_MUTE, true);
+    }
+
+  return ret;
+}
+
+/****************************************************************************
+ * Name: board_external_amp_mute_monitor
+ *
+ * Description:
+ *   Get External Amp. Mute status.
+ *    true:  Mute on
+ *    false: Mute off
+ *
+ ****************************************************************************/
+
+bool board_external_amp_mute_monitor(void)
+{
+  bool mute = board_power_monitor(POWER_AUDIO_MUTE);
+  return !mute;
+}
+
+/****************************************************************************
+ * Name: board_audio_i2s_enable
+ *
+ * Description:
+ *   Enable I2S on the board.
+ *
+ ****************************************************************************/
+
+void board_audio_i2s_enable(void)
+{
+#ifdef CONFIG_CXD56_I2S0
+  /* Select I2S0_BCK, I2S0_LRCK, I2S0_DATA_IN, I2S0_DATA_OUT. */
+
+#  ifdef CONFIG_CXD56_AUDIO_I2S_DEVICE_1_MASTER
+  /* I2S0 Master. */
+
+#    ifdef CONFIG_CXD56_AUDIO_I2S_LOWEMI_2MA
+  CXD56_PIN_CONFIGS(PINCONFS_I2S0_M_NORM);
+#    else
+  CXD56_PIN_CONFIGS(PINCONFS_I2S0_M_HIGH);
+#    endif
+#  else
+  /* I2S0 Slave. */
+
+#    ifdef CONFIG_CXD56_AUDIO_I2S_LOWEMI_2MA
+  CXD56_PIN_CONFIGS(PINCONFS_I2S0_S_NORM);
+#    else
+  CXD56_PIN_CONFIGS(PINCONFS_I2S0_S_HIGH);
+#    endif
+#  endif /* CONFIG_CXD56_AUDIO_I2S_DEVICE_1_MASTER */
+#endif /* CONFIG_CXD56_I2S0 */
+
+#ifdef CONFIG_CXD56_I2S1
+  /* Select I2S1_BCK, I2S1_LRCK, I2S1_DATA_IN, I2S1_DATA_OUT. */
+
+#  ifdef CONFIG_CXD56_AUDIO_I2S_DEVICE_2_MASTER
+  /* I2S1 Master. */
+
+#    ifdef CONFIG_CXD56_AUDIO_I2S_LOWEMI_2MA
+  CXD56_PIN_CONFIGS(PINCONFS_I2S1_M_NORM);
+#    else
+  CXD56_PIN_CONFIGS(PINCONFS_I2S1_M_HIGH);
+#    endif
+#  else
+  /* I2S1 Slave. */
+
+#    ifdef CONFIG_CXD56_AUDIO_I2S_LOWEMI_2MA
+  CXD56_PIN_CONFIGS(PINCONFS_I2S1_S_NORM);
+#    else
+  CXD56_PIN_CONFIGS(PINCONFS_I2S1_S_HIGH);
+#    endif
+#  endif /* CONFIG_CXD56_AUDIO_I2S_DEVICE_2_MASTER */
+#endif /* CONFIG_CXD56_I2S1 */
+}
+
+/****************************************************************************
+ * Name: board_audio_i2s_disable
+ *
+ * Description:
+ *   Dsiable I2S on the board.
+ *
+ ****************************************************************************/
+
+void board_audio_i2s_disable(void)
+{
+#ifdef CONFIG_CXD56_I2S0
+  /* Select GPIO(P1v_00/01/02/03) */
+
+  if (check_pin_i2s_mode(PIN_I2S0_BCK))
+    {
+      CXD56_PIN_CONFIGS(PINCONFS_I2S0_GPIO);
+    }
+#endif
+
+#ifdef CONFIG_CXD56_I2S1
+  /* Select GPIO(P1v_00/01/02/03) */
+
+  if (check_pin_i2s_mode(PIN_I2S1_BCK))
+    {
+      CXD56_PIN_CONFIGS(PINCONFS_I2S1_GPIO);
+    }
+#endif
+}
+
+/****************************************************************************
+ * Name: board_audio_initialize
+ *
+ * Description:
+ *   Initialize audio I/O on the board.
+ *
+ ****************************************************************************/
+
+void board_audio_initialize(void)
+{
+  /* Select MCLK. */
+
+#ifndef CONFIG_CXD56_AUDIO_ANALOG_NONE
+  CXD56_PIN_CONFIGS(PINCONFS_MCLK);
+#endif
+
+  /* Select PDM_CLK, PDM_IN, PDM_OUT. */
+
+#ifdef CONFIG_CXD56_AUDIO_PDM_LOWEMI_2MA
+  CXD56_PIN_CONFIGS(PINCONFS_PDM_NORM);
+#else
+  CXD56_PIN_CONFIGS(PINCONFS_PDM_HIGH);
+#endif
+}
+
+/****************************************************************************
+ * Name: board_audio_finalize
+ *
+ * Description:
+ *   Finalize audio I/O on the board.
+ *
+ ****************************************************************************/
+
+void board_audio_finalize(void)
+{
+  /* Select GPIO(P1x_00). */
+
+#ifndef CONFIG_CXD56_AUDIO_ANALOG_NONE
+  CXD56_PIN_CONFIGS(PINCONFS_MCLK_GPIO);
+#endif
+
+  /* Select GPIO(P1y_00/01/02). */
+
+  CXD56_PIN_CONFIGS(PINCONFS_PDM_GPIO);
+
+  /* Disable I2S. */
+
+  board_audio_i2s_disable();
+}

boards/arm/cxd56xx/drivers/Kconfig

@@ -3,4 +3,5 @@
 # see the file kconfig-language.txt in the NuttX tools repository.
 #
 
+source "drivers/platform/audio/Kconfig"
 source "drivers/platform/sensors/Kconfig"

boards/arm/cxd56xx/drivers/Make.defs

@@ -33,4 +33,5 @@
 #
 ############################################################################
 
+include platform$(DELIM)audio$(DELIM)Make.defs
 include platform$(DELIM)sensors$(DELIM)Make.defs

boards/arm/cxd56xx/drivers/audio/Kconfig

@@ -0,0 +1,429 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+comment "Audio Options"
+
+menuconfig CXD56_AUDIO
+	bool "CXD56 Audio Driver"
+	default n
+
+if CXD56_AUDIO
+
+config CXD56_I2S0
+	bool "I2S0"
+	default y
+	---help---
+		Enable I2S channel 0
+
+config CXD56_I2S1
+	bool "I2S1"
+	default n
+	---help---
+		Enable I2S channel 1
+
+menu "Audio baseband config settings"
+
+choice
+	prompt "Audio analog block selection"
+	default CXD56_AUDIO_ANALOG_CXD5247
+
+config CXD56_AUDIO_ANALOG_CXD5247
+	bool "CXD5247"
+
+config CXD56_AUDIO_ANALOG_NONE
+	bool "System does not use audio analog block"
+endchoice
+
+if CXD56_AUDIO_ANALOG_CXD5247
+menu "CXD5247 settings"
+choice
+	prompt "X'tal frequency of the CXD5247"
+	default CXD56_AUDIO_XTAL_SEL_49_152MHZ
+
+config CXD56_AUDIO_XTAL_SEL_24_576MHZ
+	bool "24.576MHz"
+
+config CXD56_AUDIO_XTAL_SEL_49_152MHZ
+	bool "49.152MHz"
+endchoice
+
+choice
+	prompt "MICBIAS voltage of the CXD5247"
+	default CXD56_AUDIO_MICBIAS_20V
+
+config CXD56_AUDIO_MICBIAS_20V
+	bool "2.0V"
+
+config CXD56_AUDIO_MICBIAS_28V
+	bool "2.8V"
+endchoice
+
+config CXD56_AUDIO_MIC_CHANNEL_SEL
+	hex "MIC channel select map"
+	default 0xFFFF4321
+	range 0 0xFFFFFFFF
+	---help---
+		This designates microphone input of the CXD5247 in matrix format.
+		One microphone can be assigned to multiple channels (CHs.)
+		(Example: When DMA transfer is performed in monaural mode,
+		AMIC1 is assigned to CH1 and CH2 and the same audio data is
+		transferred to the each channel)
+
+choice
+	prompt "Output drive strength of MCLKOUT selection"
+	default CXD56_AUDIO_MCLKOUT_WEAKEST
+
+config CXD56_AUDIO_MCLKOUT_WEAKEST
+	bool "2mA"
+
+config CXD56_AUDIO_MCLKOUT_WEAKER
+	bool "4mA"
+
+config CXD56_AUDIO_MCLKOUT_STRONGER
+	bool "6mA"
+
+config CXD56_AUDIO_MCLKOUT_STRONGEST
+	bool "8mA"
+endchoice
+
+choice
+	prompt "Output drive strength of CLKOUT_DMIC selection"
+	default CXD56_AUDIO_CLKOUT_DMIC_WEAKEST
+
+config CXD56_AUDIO_CLKOUT_DMIC_WEAKEST
+	bool "2mA"
+
+config CXD56_AUDIO_CLKOUT_DMIC_WEAKER
+	bool "4mA"
+
+config CXD56_AUDIO_CLKOUT_DMIC_STRONGER
+	bool "6mA"
+
+config CXD56_AUDIO_CLKOUT_DMIC_STRONGEST
+	bool "8mA"
+endchoice
+
+choice
+	prompt "Output drive strength of DA_DATA selection"
+	default CXD56_AUDIO_DA_DATA_WEAKEST
+
+config CXD56_AUDIO_DA_DATA_WEAKEST
+	bool "2mA"
+
+config CXD56_AUDIO_DA_DATA_WEAKER
+	bool "4mA"
+
+config CXD56_AUDIO_DA_DATA_STRONGER
+	bool "6mA"
+
+config CXD56_AUDIO_DA_DATA_STRONGEST
+	bool "8mA"
+endchoice
+
+choice
+	prompt "Output drive strength of GPO_A selection"
+	default CXD56_AUDIO_GPO_A_WEAKEST
+
+config CXD56_AUDIO_GPO_A_WEAKEST
+	bool "2mA"
+
+config CXD56_AUDIO_GPO_A_WEAKER
+	bool "4mA"
+
+config CXD56_AUDIO_GPO_A_STRONGER
+	bool "6mA"
+
+config CXD56_AUDIO_GPO_A_STRONGEST
+	bool "8mA"
+endchoice
+
+choice
+	prompt "Input source of Cascaded Integrator-Comb filter selection"
+	default CXD56_AUDIO_CIC_IN_SEL_CXD
+
+config CXD56_AUDIO_CIC_IN_SEL_CXD
+	bool "from CXD5247"
+
+config CXD56_AUDIO_CIC_IN_SEL_DMIC
+	bool "from DMIC"
+
+config CXD56_AUDIO_CIC_IN_SEL_NONE
+	bool "No Cascaded Integrator-Comb filter input"
+endchoice
+
+choice
+	prompt "Drive currents of PDM signals"
+	default CXD56_AUDIO_PDM_LOWEMI_2MA
+
+config CXD56_AUDIO_PDM_LOWEMI_2MA
+	bool "2mA"
+
+config CXD56_AUDIO_PDM_LOWEMI_4MA
+	bool "4mA"
+endchoice
+
+choice
+	prompt "HPADC mic bias selection"
+	default CXD56_AUDIO_HPADC_MIC_BIAS_OFF
+	---help---
+		This setting depends on a circuit board configration.
+		Set "Microphone bias is enabled" when a microphone connected to
+		HPADC should be applied with voltage from the CXD5247.
+		Otherwise, set "Microphone bias is disabled".
+
+config CXD56_AUDIO_HPADC_MIC_BIAS_ON
+	bool "Microphone bias is enabled"
+
+config CXD56_AUDIO_HPADC_MIC_BIAS_OFF
+	bool "Microphone bias is disabled"
+endchoice
+
+choice
+	prompt "Version of the CXD5247"
+	default CXD56_CXD5247_VER_ES4
+
+config CXD56_CXD5247_VER_ES2
+	bool "ES Version 2.0"
+
+config CXD56_CXD5247_VER_ES3
+	bool "ES Version 3.0"
+
+config CXD56_CXD5247_VER_ES4
+	bool "ES Version 4.0"
+endchoice
+
+if CXD56_CXD5247_VER_ES4
+choice
+	prompt "Speaker time split on drive selection"
+	default CXD56_AUDIO_SP_SPLIT_SHORTEST
+
+config CXD56_AUDIO_SP_SPLIT_SHORTEST
+	bool "shortest"
+
+config CXD56_AUDIO_SP_SPLIT_SHORT
+	bool "short"
+
+config CXD56_AUDIO_SP_SPLIT_LONG
+	bool "long"
+
+config CXD56_AUDIO_SP_SPLIT_LONGEST
+	bool "longest"
+endchoice
+
+choice
+	prompt "Speaker drive mode selection"
+	default CXD56_AUDIO_SP_DRV_LINEOUT
+
+config CXD56_AUDIO_SP_DRV_4DRIVERT
+	bool "4Driver(SPK)"
+
+config CXD56_AUDIO_SP_DRV_2DRIVERT
+	bool "2Driver"
+
+config CXD56_AUDIO_SP_DRV_1DRIVERT
+	bool "1Driver(HP)"
+
+config CXD56_AUDIO_SP_DRV_LINEOUT
+	bool "Lineout"
+endchoice
+endif # CXD56_CXD5247_VER_ES4
+endmenu
+endif # CXD56_AUDIO_ANALOG_CXD5247
+
+menu "I2S settings"
+
+if CXD56_I2S0
+choice
+	prompt "I2S0 device mode selection"
+	default CXD56_AUDIO_I2S_DEVICE_1_SLAVE
+	---help---
+		This designates ports and clock modes that are connected
+		as interfaces for PCM signal input and output.
+
+config CXD56_AUDIO_I2S_DEVICE_1_SLAVE
+	bool "I2S0 Slave mode"
+
+config CXD56_AUDIO_I2S_DEVICE_1_MASTER
+	bool "I2S0 Master mode"
+endchoice
+
+choice
+	prompt "I2S0 format type selection"
+	default CXD56_AUDIO_I2S_FORMAT_1_I2S
+	---help---
+		This designates the format of PCM signals on I2S.
+
+config CXD56_AUDIO_I2S_FORMAT_1_I2S
+	bool "I2S format"
+
+config CXD56_AUDIO_I2S_FORMAT_1_LEFT
+	bool "Left Justified format"
+endchoice
+
+choice
+	prompt "I2S0 bypass mode selection"
+	default CXD56_AUDIO_I2S_BYPASS_MODE_1_DISABLE
+	---help---
+		This designates the bypass mode of the sampling rate converter.
+		To improve sound quality, set it to "Enable".
+		The bypass mode can be enable when audio clk_mode is Hi-Res mode,
+		and I2S device mode is master mode and rate is 192kHz(192000).
+
+config CXD56_AUDIO_I2S_BYPASS_MODE_1_ENABLE
+	bool "Enable bypass"
+
+config CXD56_AUDIO_I2S_BYPASS_MODE_1_DISABLE
+	bool "Disable bypass"
+endchoice
+
+config CXD56_AUDIO_I2S_RATE_1
+	int "I2S0 data rate"
+	default  48000
+	range 48000 192000
+	---help---
+		This designates input and output data rate of I2S.
+		The maximum rate is 192000.
+
+endif # CXD56_I2S0
+
+if CXD56_I2S1
+choice
+	prompt "I2S1 device mode selection"
+	default CXD56_AUDIO_I2S_DEVICE_2_SLAVE
+	---help---
+		This designates ports and clock modes that are connected
+		as interfaces for PCM signal input and output.
+
+config CXD56_AUDIO_I2S_DEVICE_2_SLAVE
+	bool "I2S1 Slave mode"
+
+config CXD56_AUDIO_I2S_DEVICE_2_MASTER
+	bool "I2S1 Master mode"
+endchoice
+
+choice
+	prompt "I2S1 format type selection"
+	default CXD56_AUDIO_I2S_FORMAT_2_I2S
+	---help---
+		This designates the format of PCM signals on I2S0.
+
+config CXD56_AUDIO_I2S_FORMAT_2_I2S
+	bool "I2S format"
+
+config CXD56_AUDIO_I2S_FORMAT_2_LEFT
+	bool "Left Justified format"
+endchoice
+
+choice
+	prompt "I2S1 bypass mode selection"
+	default CXD56_AUDIO_I2S_BYPASS_MODE_2_DISABLE
+	---help---
+		This designates the bypass mode of the sampling rate converter.
+		To improve sound quality, set it to "Enable".
+		The bypass mode can be enable when audio clk_mode is Hi-Res mode,
+		and I2S device mode is master mode and rate is 192kHz(192000).
+
+config CXD56_AUDIO_I2S_BYPASS_MODE_2_ENABLE
+	bool "Enable bypass"
+
+config CXD56_AUDIO_I2S_BYPASS_MODE_2_DISABLE
+	bool "Disable bypass"
+endchoice
+
+config CXD56_AUDIO_I2S_RATE_2
+	int "I2S1 data rate"
+	default  48000
+	range 48000 192000
+	---help---
+		This designates input and output data rate of I2S1.
+		The maximum rate is 192000.
+
+endif # CXD56_I2S1
+
+choice
+	prompt "Drive currents of I2S signals"
+	default CXD56_AUDIO_I2S_LOWEMI_2MA
+
+config CXD56_AUDIO_I2S_LOWEMI_2MA
+	bool "2mA"
+
+config CXD56_AUDIO_I2S_LOWEMI_4MA
+	bool "4mA"
+endchoice
+endmenu
+
+choice
+	prompt "ON/OFF of Automatic Level Control/Sound Pressure Counter selection"
+	default CXD56_AUDIO_ALC_SPC_SEL_OFF
+
+config CXD56_AUDIO_ALC_SPC_SEL_OFF
+	bool "All OFF"
+
+config CXD56_AUDIO_ALC_SPC_SEL_ALC
+	bool "Automatic Level Control ON"
+
+config CXD56_AUDIO_ALC_SPC_SEL_SPC
+	bool "Sound Pressure Counter ON"
+endchoice
+
+if CXD56_AUDIO_ALC_SPC_SEL_ALC
+menu "Automatic Level Control setting"
+config CXD56_AUDIO_ALC_KNEE
+	int "Knee levels of Automatic Level Control.[(1/10)dB]"
+	default -40
+	range -635 0
+	---help---
+		This command sets integer values 10 times larger than knee levels of
+		Automatic Level Control. (step width: 0.5 dB) When a value within the
+		range in the table below with a number other than 0 or 5 in one's
+		place is designated, it will be regarded as a integer value round up
+		to zero or five in the one's place. For example, when "-24" is
+		designated, the value will be regarded as "-20".
+
+config CXD56_AUDIO_ALC_TARGET
+	int "Target level of Automatic Level Control.[dB]"
+	default 0
+	range -63 0
+endmenu
+endif # CXD56_AUDIO_ALC_SPC_SEL_ALC
+
+if CXD56_AUDIO_ALC_SPC_SEL_SPC
+menu "Sound Pressure Conter setting"
+config CXD56_AUDIO_SPC_LIMIT
+	int "Limit levels of Sound Pressure Counter.[(1/10)dB]"
+	default 0
+	range -250 0
+	---help---
+		This command sets integer values 10 times larger than limit levels of
+		Sound Pressure Counter. (step width: 0.5 dB) When a value within the
+		range in the table below with a number other than 0 or 5 in one's
+		place is designated, it will be regarded as a integer value round up
+		to zero or five in the one's place. For example, when "-24" is
+		designated, the value will be regarded as "-20".
+endmenu
+endif # CXD56_AUDIO_ALC_SPC_SEL_SPC
+
+choice
+	prompt "LR data format during DMA transfer"
+	default CXD56_AUDIO_DMA_DATA_FORMAT_RL
+	---help---
+		This sets the data arrangement of left channel and right channel in
+		the data format for 16 bit DMA transfer.
+
+config CXD56_AUDIO_DMA_DATA_FORMAT_LR
+	bool "allocate left channel data in most significant bit"
+
+config CXD56_AUDIO_DMA_DATA_FORMAT_RL
+	bool "allocate right channel data in most significant bit"
+endchoice
+
+config CXD56_AUDIO_MIC_BOOT_WAIT
+	int "Wait time for mic booting.[msec]"
+	default 1100
+	range 0 65535
+
+endmenu
+
+endif # CXD56_AUDIO

boards/arm/cxd56xx/drivers/audio/Make.defs

@@ -0,0 +1,19 @@
+CSRCS += cxd56_audio.c
+CSRCS += cxd56_audio_config.c
+CSRCS += cxd56_audio_analog.c
+CSRCS += cxd56_audio_power.c
+CSRCS += cxd56_audio_filter.c
+CSRCS += cxd56_audio_mic.c
+CSRCS += cxd56_audio_volume.c
+CSRCS += cxd56_audio_digital.c
+CSRCS += cxd56_audio_beep.c
+CSRCS += cxd56_audio_irq.c
+CSRCS += cxd56_audio_dma.c
+CSRCS += cxd56_audio_ac_reg.c
+CSRCS += cxd56_audio_bca_reg.c
+CSRCS += cxd56_audio_aca.c
+CSRCS += cxd56_audio_pin.c
+
+DEPPATH += --dep-path platform$(DELIM)audio
+VPATH += :platform$(DELIM)audio
+CFLAGS += $(shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)platform$(DELIM)audio)

boards/arm/cxd56xx/drivers/audio/cxd56_audio_ac_reg.h

@@ -0,0 +1,454 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_ac_reg.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_AC_REG_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_AC_REG_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+enum audio_codec_register_id_e
+{
+  RI_REVID = 0,
+  RI_DEVICEID,
+  RI_PDN_AMICEXT,
+  RI_PDN_AMIC1,
+  RI_PDN_AMIC2,
+  RI_PDN_DAC,
+  RI_PDN_LINEIN,
+  RI_PDN_MIC,
+  RI_PDN_DMIC,
+  RI_PDN_DSPB,
+  RI_PDN_ANC,
+  RI_PDN_DNC1,
+  RI_PDN_DNC2,
+  RI_PDN_SMSTR,
+  RI_PDN_DSPS2,
+  RI_PDN_DSPS1,
+  RI_PDN_DSPC,
+  RI_FS_FS,
+  RI_DECIM0_EN,
+  RI_DECIM1_EN,
+  RI_SDES_EN,
+  RI_MCK_AHBMSTR_EN,
+  RI_AU_DAT_SEL2,
+  RI_AU_DAT_SEL1,
+  RI_COD_INSEL3,
+  RI_COD_INSEL2,
+  RI_COD_INSEL1,
+  RI_DSR_RATE,
+  RI_DIGSFT,
+  RI_SRC1,
+  RI_SRC1IN_SEL,
+  RI_SRC2,
+  RI_SRC2IN_SEL,
+  RI_DIF2,
+  RI_DIF1,
+  RI_SD2MASTER,
+  RI_SD1MASTER,
+  RI_SDCK_OUTENX,
+  RI_HI_RES_MODE,
+  RI_HPF2_MODE,
+  RI_CIC2IN_SWAP,
+  RI_INV_DMIC2L,
+  RI_INV_DMIC2R,
+  RI_CIC2_GAIN_MODE,
+  RI_CIC2IN_SEL,
+  RI_ADC2_BOOST,
+  RI_INV_AMIC2L,
+  RI_INV_AMIC2R,
+  RI_HPF1_MODE,
+  RI_CIC1IN_SWAP,
+  RI_INV_DMIC1L,
+  RI_INV_DMIC1R,
+  RI_CIC1_GAIN_MODE,
+  RI_CIC1IN_SEL,
+  RI_ADC1_BOOST,
+  RI_ADC_FS,
+  RI_INV_AMIC1L,
+  RI_INV_AMIC1R,
+  RI_HPF4_MODE,
+  RI_CIC4IN_SWAP,
+  RI_INV_DMIC4L,
+  RI_INV_DMIC4R,
+  RI_CIC4IN_SEL,
+  RI_ADC4_BOOST,
+  RI_INV_AMIC4L,
+  RI_INV_AMIC4R,
+  RI_HPF3_MODE,
+  RI_CIC3IN_SWAP,
+  RI_INV_DMIC3L,
+  RI_INV_DMIC3R,
+  RI_CIC3IN_SEL,
+  RI_ADC_3_BOOST,
+  RI_INV_AMIC3L,
+  RI_INV_AMIC3R,
+  RI_CIC1_RGAIN,
+  RI_CIC1_LGAIN,
+  RI_CIC2_RGAIN,
+  RI_CIC2_LGAIN,
+  RI_CIC3_RGAIN,
+  RI_CIC3_LGAIN,
+  RI_CIC4_RGAIN,
+  RI_CIC4_LGAIN,
+  RI_SPC_LIMIT,
+  RI_SPC_EN,
+  RI_ALC_KNEE,
+  RI_ALCTARGET,
+  RI_ALC_REC,
+  RI_ALC_EN,
+  RI_INV_ASP2R,
+  RI_INV_ASP2L,
+  RI_INV_ASP1R,
+  RI_INV_ASP1L,
+  RI_ARC,
+  RI_ARC_VOL,
+  RI_CS_VOL,
+  RI_CS_SIGN,
+  RI_SDOUT_VOL,
+  RI_SDIN2_VOL,
+  RI_SDIN1_VOL,
+  RI_SDIN1_EN,
+  RI_SDIN2_EN,
+  RI_SDOUT1_EN,
+  RI_SDOUT2_EN,
+  RI_MUTE_B,
+  RI_BLF_EN,
+  RI_TRANS_MODE,
+  RI_DAC_VOL,
+  RI_LINEIN_VOL,
+  RI_BEEP_VOL,
+  RI_BEEP_FREQ,
+  RI_BEEP_ON,
+  RI_M_SPCLKERR1,
+  RI_M_SPCLKERR2,
+  RI_ADC1L_VOL,
+  RI_ADC1R_VOL,
+  RI_ADC2L_VOL,
+  RI_ADC2R_VOL,
+  RI_SMS_INTIM,
+  RI_DNC2_AVF,
+  RI_DNC2_MONION1,
+  RI_DNC2_MONIEN1,
+  RI_DNC2_MONION0,
+  RI_DNC2_MONIEN0,
+  RI_DNC1_AVF,
+  RI_DNC1_MONION1,
+  RI_DNC1_MONIEN1,
+  RI_DNC1_MONION0,
+  RI_DNC1_MONIEN0,
+  RI_DNC2_CFMD,
+  RI_DNC2_ESS,
+  RI_DNC2_ZWR,
+  RI_DNC2_MUTE,
+  RI_DNC2_START,
+  RI_DNC1_CFMD,
+  RI_DNC1_ESS,
+  RI_DNC1_ZWR,
+  RI_DNC1_MUTE,
+  RI_DNC1_START,
+  RI_DNC_STB,
+  RI_DCMFS_34,
+  RI_DNC_512,
+  RI_DCMFS,
+  RI_DNC1_CANVOL1,
+  RI_DNC1_CANVOL0,
+  RI_DNC2_CANVOL1,
+  RI_DNC2_CANVOL0,
+  RI_DNC1_MONVOL1,
+  RI_DNC1_MONVOL0,
+  RI_DNC2_MONVOL1,
+  RI_DNC2_MONVOL0,
+  RI_DNC1_ALGAIN1,
+  RI_DNC1_ALGAIN0,
+  RI_DNC2_ALGAIN1,
+  RI_DNC2_ALGAIN0,
+  RI_DNC_PHD,
+  RI_DNC1_LIMIYT,
+  RI_DNC1_LMTON0,
+  RI_DNC1_LIMITR,
+  RI_DNC1_LIMITA,
+  RI_DNC1_INSTMD,
+  RI_DNC2_LIMIYT,
+  RI_DNC2_LMTON0,
+  RI_DNC2_LIMITR,
+  RI_DNC2_LIMITA,
+  RI_DNC2_INSTMD,
+  RI_ANC_FALVL,
+  RI_ANC_TST,
+  RI_ANC_FATST,
+  RI_ENVREG_RESET,
+  RI_ANC_CHSEL,
+  RI_ANC_TR,
+  RI_ANC_TA,
+  RI_ANC_SOUT,
+  RI_ANC_FASPN,
+  RI_ANC_ZWR,
+  RI_ANC_MUTE,
+  RI_ANC_START,
+  RI_ANC_FASTART,
+  RI_ANC_FAWTB,
+  RI_ANC_FAWTA,
+  RI_ANC_ENV1,
+  RI_ANC_ENV0,
+  RI_ANC_CURST,
+  RI_ANC_FAST,
+  RI_ANC_ENV2,
+  RI_NS_AMMD,
+  RI_BPGAIN,
+  RI_BPSEL,
+  RI_NSDI,
+  RI_NSII,
+  RI_BPON,
+  RI_NSMS,
+  RI_CHSEL,
+  RI_NSADJON,
+  RI_NSX2,
+  RI_NSPMUTE,
+  RI_NSDD,
+  RI_OUT2DLY,
+  RI_NSAD,
+  RI_PWMMD,
+  RI_NSAS,
+  RI_NSADJ,
+  RI_VCONT,
+  RI_TEST_OUT,
+  RI_TEST_OUT_SEL0,
+  RI_TEST_OUT_SEL1,
+  RI_TEST_IN,
+  RI_S_RESET,
+  RI_HALT_INHIBIT,
+  RI_FSRDBGMD,
+  RI_BEEP_TEST,
+  RI_ARWPHSET,
+  RI_DSPRAM4_CLR,
+  RI_DSPRAM3_CLR,
+  RI_DSPRAM2_CLR,
+  RI_DSPRAM1_CLR,
+  RI_ALC_DELAY,
+  RI_ALC_ALG,
+  RI_ARC_TIMER,
+  RI_ARC_DLY,
+  RI_SPC_AWEIGHT,
+  RI_SPC_ALC_ATTACK,
+  RI_SPC_ALC_RELEASE,
+  RI_ALC_LPF,
+  RI_SPC_ENERGY,
+  RI_W_RSRV,
+  RI_R_RSRV,
+  RI_SER_MODE,
+  RI_PDM_OUT_EN,
+  RI_FS_CLK_EN,
+  RI_SEL_OUT4_R,
+  RI_SEL_OUT4_L,
+  RI_SEL_OUT3_R,
+  RI_SEL_OUT3_L,
+  RI_SEL_OUT2_R,
+  RI_SEL_OUT2_L,
+  RI_SEL_OUT1_R,
+  RI_SEL_OUT1_L,
+  RI_OUTEN_MIC1L_B,
+  RI_OUTEN_MIC1R_B,
+  RI_OUTEN_MIC2L_B,
+  RI_OUTEN_MIC2R_B,
+  RI_OUTEN_MIC1L_A,
+  RI_OUTEN_MIC1R_A,
+  RI_OUTEN_MIC2L_A,
+  RI_OUTEN_MIC2R_A,
+  RI_SEL_OUTF,
+  RI_SEL_INF,
+  RI_SEL_DECIM,
+  RI_DEQ_COEF_1B0,
+  RI_DEQ_EN,
+  RI_DEQ_COEF_1B1,
+  RI_DEQ_COEF_1B2,
+  RI_DEQ_COEF_1A1,
+  RI_DEQ_COEF_1A2,
+  RI_DEQ_COEF_2B0,
+  RI_DEQ_COEF_2B1,
+  RI_DEQ_COEF_2B2,
+  RI_DEQ_COEF_2A1,
+  RI_DEQ_COEF_2A2,
+  RI_DEQ_COEF_3B0,
+  RI_DEQ_COEF_3B1,
+  RI_DEQ_COEF_3B2,
+  RI_DEQ_COEF_3A1,
+  RI_DEQ_COEF_3A2,
+  RI_DEQ_COEF_4B0,
+  RI_DEQ_COEF_4B1,
+  RI_DEQ_COEF_4B2,
+  RI_DEQ_COEF_4A1,
+  RI_DEQ_COEF_4A2,
+  RI_DEQ_COEF_5B0,
+  RI_DEQ_COEF_5B1,
+  RI_DEQ_COEF_5B2,
+  RI_DEQ_COEF_5A1,
+  RI_DEQ_COEF_5A2,
+  RI_DEQ_COEF_6B0,
+  RI_DEQ_COEF_6B1,
+  RI_DEQ_COEF_6B2,
+  RI_DEQ_COEF_6A1,
+  RI_DEQ_COEF_6A2,
+  RI_LR_SWAP1,
+  RI_LR_SWAP2,
+  RI_DUMMY_0,
+  RI_DUMMY_1,
+  RI_DUMMY_2,
+  RI_DUMMY_3,
+  RI_DUMMY_4,
+  RI_DUMMY_5,
+  RI_DUMMY_6,
+  RI_DUMMY_7,
+  RI_DUMMY_8,
+  RI_DUMMY_9,
+  RI_DUMMY_10,
+  RI_DUMMY_11,
+  RI_DUMMY_12,
+  RI_DUMMY_13,
+  RI_DUMMY_14,
+  RI_DUMMY_15,
+  RI_DUMMY_16,
+  RI_DUMMY_17,
+  RI_DUMMY_18,
+  RI_DUMMY_19,
+  RI_DUMMY_20,
+  RI_DUMMY_21,
+  RI_DUMMY_22,
+  RI_DUMMY_23,
+  RI_DUMMY_24,
+  RI_DUMMY_25,
+  RI_DUMMY_26,
+  RI_DUMMY_27,
+  RI_DUMMY_28,
+  RI_DUMMY_29,
+  RI_DUMMY_30,
+  RI_DUMMY_31,
+  RI_RAM_RW_EN,
+  RI_REG_MAX_ENTRY
+};
+
+typedef enum audio_codec_register_id_e AC_REG_ID;
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct cxd56_audio_ac_reg_seloutch_s
+{
+  uint8_t ch[CXD56_AUDIO_MIC_CH_MAX];
+};
+
+typedef struct cxd56_audio_ac_reg_seloutch_s cxd56_audio_ac_reg_seloutch_t;
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_checkid(void);
+void cxd56_audio_ac_reg_resetdsp(void);
+void cxd56_audio_ac_reg_initdsp(void);
+void cxd56_audio_ac_reg_poweron_sdes(void);
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_set_micmode(uint8_t mic_mode);
+void cxd56_audio_ac_reg_poweron_codec(void);
+void cxd56_audio_ac_reg_poweroff_codec(void);
+void cxd56_audio_ac_reg_enable_serialif(void);
+void cxd56_audio_ac_reg_init_selector(void);
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_set_alcspc(void);
+void cxd56_audio_ac_reg_poweron_dnc(void);
+void cxd56_audio_ac_reg_poweroff_dnc(void);
+void cxd56_audio_ac_reg_disable_dnc(cxd56_audio_dnc_id_t id);
+void cxd56_audio_ac_reg_enable_dnc(cxd56_audio_dnc_id_t id);
+void cxd56_audio_ac_reg_mute_dnc(cxd56_audio_dnc_id_t id);
+void cxd56_audio_ac_reg_unmute_dnc(cxd56_audio_dnc_id_t id);
+void cxd56_audio_ac_reg_set_dncram(cxd56_audio_dnc_id_t id,
+                                   FAR cxd56_audio_dnc_bin_t *bin);
+void cxd56_audio_ac_reg_enable_deq(void);
+void cxd56_audio_ac_reg_disable_deq(void);
+void cxd56_audio_ac_reg_set_deq_param(FAR cxd56_audio_deq_coef_t *deq);
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_poweron_cic(uint8_t mic_in,
+                                                 uint8_t mic_mode,
+                                                 uint8_t cic_num,
+                                                 FAR cxd56_audio_mic_gain_t *gain);
+void cxd56_audio_ac_reg_poweroff_cic(void);
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_poweron_decim(uint8_t mic_mode,
+                                                   uint8_t clk_mode);
+void cxd56_audio_ac_reg_poweroff_decim(void);
+void cxd56_audio_ac_reg_poweron_smaster(uint8_t clk_mode);
+void cxd56_audio_ac_reg_poweroff_smaster(void);
+void cxd56_audio_ac_reg_enable_smaster(void);
+void cxd56_audio_ac_reg_disable_smaster(void);
+void cxd56_audio_ac_reg_enable_beep(void);
+void cxd56_audio_ac_reg_disable_beep(void);
+void cxd56_audio_ac_reg_set_beep_freq(uint32_t freq);
+void cxd56_audio_ac_reg_set_beep_vol(uint32_t vol);
+void cxd56_audio_ac_reg_set_cicgain(uint8_t cic_num,
+                                    FAR cxd56_audio_mic_gain_t *gain);
+void cxd56_audio_ac_reg_enable_digsft(void);
+void cxd56_audio_ac_reg_disable_digsft(void);
+void cxd56_audio_ac_reg_set_dsrrate(uint32_t rate);
+void cxd56_audio_ac_reg_set_seloutch(FAR cxd56_audio_ac_reg_seloutch_t *seloutch);
+void cxd56_audio_ac_reg_enable_dma(void);
+
+void cxd56_audio_ac_reg_poweron_i2s(uint8_t clk_mode);
+void cxd56_audio_ac_reg_enable_i2s_src1(void);
+void cxd56_audio_ac_reg_enable_i2s_src2(void);
+void cxd56_audio_ac_reg_enable_i2s_bcklrckout(void);
+void cxd56_audio_ac_reg_disable_i2s_bcklrckout(void);
+
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_set_selector(cxd56_audio_signal_t sig,
+                                                  cxd56_audio_sel_t sel);
+
+CXD56_AUDIO_ECODE cxd56_audio_ac_reg_enable_cstereo(bool sign_inv,
+                                                    int16_t vol);
+void cxd56_audio_ac_reg_disable_cstereo(void);
+void cxd56_audio_ac_reg_set_vol_sdin1(uint32_t vol);
+void cxd56_audio_ac_reg_set_vol_sdin2(uint32_t vol);
+void cxd56_audio_ac_reg_set_vol_dac(uint32_t vol);
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_AC_REG_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_aca.h

@@ -0,0 +1,83 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_aca.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ACA_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ACA_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define DNC1_IRAM_BASE  0x3000
+#define DNC1_CRAM_BASE  0x3800
+#define DNC2_IRAM_BASE  0x3c00
+#define DNC2_CRAM_BASE  0x4400
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweron(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweroff(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweron_micbias(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweron_input(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_aca_set_smaster(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweron_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweroff_input(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_poweroff_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_enable_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_disable_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_aca_set_micgain(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_aca_notify_micbootdone(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ACA_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_analog.c

@@ -0,0 +1,309 @@
+/****************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_analog.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/arch.h>
+#include <nuttx/irq.h>
+#include <time.h>
+#include <arch/board/board.h>
+#include <arch/chip/audio.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_analog.h"
+#include "cxd56_audio_aca.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define AUD_MCLK_EXT     (0u<<16) /* External XTAL */
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+  inline void cxd56_audio_clock_enable(uint32_t clk, uint32_t div);
+  inline void cxd56_audio_clock_disable(void);
+  inline bool cxd56_audio_clock_is_enabled(void);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+uint64_t g_mic_boot_start_time = 0x0ull;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static void clear_mic_boot_time(void)
+{
+  g_mic_boot_start_time = 0x0ull;
+}
+
+static void set_mic_boot_time(void)
+{
+  struct timespec start;
+  if (clock_gettime(CLOCK_REALTIME, &start) < 0)
+    {
+      g_mic_boot_start_time = 0x0ull;
+      return;
+    }
+
+  g_mic_boot_start_time = (uint64_t)start.tv_sec * 1000 +
+                          (uint64_t)start.tv_nsec / 1000000;
+}
+
+static void wait_mic_boot_finish(void)
+{
+  if (g_mic_boot_start_time != 0x0ull)
+    {
+      struct timespec end;
+      if (clock_gettime(CLOCK_REALTIME, &end) < 0)
+        {
+          return;
+        }
+      uint64_t time = (uint64_t)end.tv_sec * 1000 +
+                      (uint64_t)end.tv_nsec / 1000000 -
+                       g_mic_boot_start_time;
+
+      if (time < CXD56_AUDIO_MIC_BOOT_WAIT)
+        {
+          usleep((CXD56_AUDIO_MIC_BOOT_WAIT - time) * 1000);
+        }
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  if (board_aca_power_control(CXD5247_AVDD | CXD5247_DVDD, true) != 0)
+    {
+      return CXD56_AUDIO_ECODE_ANA_PWON;
+    }
+
+  if (!board_aca_power_monitor(CXD5247_AVDD | CXD5247_DVDD))
+    {
+      return CXD56_AUDIO_ECODE_ANA_PWON;
+    }
+
+  ret = cxd56_audio_aca_poweron();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  cxd56_audio_clock_enable(AUD_MCLK_EXT, 0);
+  if (!cxd56_audio_clock_is_enabled())
+    {
+      return CXD56_AUDIO_ECODE_ANA_CLK_EN;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  cxd56_audio_clock_disable();
+
+  ret = cxd56_audio_aca_poweroff();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  board_aca_power_control(CXD5247_AVDD | CXD5247_DVDD, false);
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron_input(FAR cxd56_audio_mic_gain_t *gain)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  uint8_t mic_dev = cxd56_audio_config_get_micdev();
+
+  if ((mic_dev == CXD56_AUDIO_CFG_MIC_DEV_ANALOG) ||
+      (mic_dev == CXD56_AUDIO_CFG_MIC_DEV_ANADIG))
+    {
+      ret = cxd56_audio_aca_poweron_micbias();
+      if (CXD56_AUDIO_ECODE_OK != ret)
+        {
+          return ret;
+        }
+
+      set_mic_boot_time();
+    }
+
+  ret = cxd56_audio_aca_poweron_input(gain);
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron_output(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+
+  ret = cxd56_audio_aca_set_smaster();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  ret = cxd56_audio_aca_poweron_output();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff_input(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  ret = cxd56_audio_aca_poweroff_input();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+  clear_mic_boot_time();
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff_output(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  ret = cxd56_audio_aca_poweroff_output();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_enable_output(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  ret = cxd56_audio_aca_enable_output();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_disable_output(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  ret = cxd56_audio_aca_disable_output();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_set_micgain(FAR cxd56_audio_mic_gain_t *gain)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+
+  ret = cxd56_audio_aca_set_micgain(gain);
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_wait_input_standby()
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+#ifdef CONFIG_CXD56_AUDIO_ANALOG_CXD5247
+  wait_mic_boot_finish();
+  ret = cxd56_audio_aca_notify_micbootdone();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+#endif
+
+  return ret;
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_analog.h

@@ -0,0 +1,76 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_analog.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ANALOG_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ANALOG_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron_input(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweron_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff_input(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_poweroff_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_enable_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_disable_output(void);
+CXD56_AUDIO_ECODE cxd56_audio_analog_set_micgain(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_analog_wait_input_standby(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_ANALOG_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_bca_reg.h

@@ -0,0 +1,312 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_bca_reg.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BCA_REG_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BCA_REG_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+typedef enum
+{
+  BCA_Mic_In_start_adr,
+  BCA_Mic_In_sample_no,
+  BCA_Mic_In_rtd_trg,
+  BCA_Mic_In_nointr,
+  BCA_Mic_In_bitwt,
+  BCA_Mic_In_ch8_sel,
+  BCA_Mic_In_ch7_sel,
+  BCA_Mic_In_ch6_sel,
+  BCA_Mic_In_ch5_sel,
+  BCA_Mic_In_ch4_sel,
+  BCA_Mic_In_ch3_sel,
+  BCA_Mic_In_ch2_sel,
+  BCA_Mic_In_ch1_sel,
+  BCA_Mic_In_start,
+  BCA_Mic_In_error_setting,
+  BCA_Mic_In_monbuf,
+  BCA_I2s1_In_start_adr,
+  BCA_I2s1_In_sample_no,
+  BCA_I2s1_In_rtd_trg,
+  BCA_I2s1_In_nointr,
+  BCA_I2s1_In_bitwt,
+  BCA_I2s1_In_ch2_sel,
+  BCA_I2s1_In_ch1_sel,
+  BCA_I2s1_In_Mon_start,
+  BCA_I2s1_In_Mon_error_setting,
+  BCA_I2s1_In_Mon_monbuf,
+  BCA_I2s2_In_start_adr,
+  BCA_I2s2_In_sample_no,
+  BCA_I2s2_In_rtd_trg,
+  BCA_I2s2_In_nointr,
+  BCA_I2s2_In_bitwt,
+  BCA_I2s2_In_ch2_sel,
+  BCA_I2s2_In_ch1_sel,
+  BCA_I2s2_In_Mon_start,
+  BCA_I2s2_In_Mon_error_setting,
+  BCA_I2s2_In_Mon_monbuf,
+  BCA_I2s1_Out_start_adr,
+  BCA_I2s1_Out_sample_no,
+  BCA_I2s1_Out_rtd_trg,
+  BCA_I2s1_Out_nointr,
+  BCA_I2s1_Out_bitwt,
+  BCA_I2s1_Out_sd1_r_sel,
+  BCA_I2s1_Out_sd1_l_sel,
+  BCA_I2s1_Out_Mon_start,
+  BCA_I2s1_Out_Mon_error_setting,
+  BCA_I2s1_Out_Mon_monbuf,
+  BCA_I2s2_Out_start_adr,
+  BCA_I2s2_Out_sample_no,
+  BCA_I2s2_Out_rtd_trg,
+  BCA_I2s2_Out_nointr,
+  BCA_I2s2_Out_bitwt,
+  BCA_I2s2_Out_sd1_r_sel,
+  BCA_I2s2_Out_sd1_l_sel,
+  BCA_I2s2_Out_Mon_start,
+  BCA_I2s2_Out_Mon_error_setting,
+  BCA_I2s2_Out_Mon_monbuf,
+  BCA_I2s_ensel,
+  BCA_Mic_In_prdat_u,
+  BCA_I2s1_In_prdat_u,
+  BCA_I2s2_In_prdat_u,
+  BCA_I2s1_Out_prdat_d,
+  BCA_I2s2_Out_prdat_d,
+  BCA_Mic_Int_Ctrl_done_mic,
+  BCA_Mic_Int_Ctrl_err_mic,
+  BCA_Mic_Int_Ctrl_smp_mic,
+  BCA_Mic_Int_Ctrl_cmb_mic,
+  BCA_I2s1_Int_Ctrl_done_i2so,
+  BCA_I2s1_Int_Ctrl_err_i2so,
+  BCA_I2s1_Int_Ctrl_done_i2si,
+  BCA_I2s1_Int_Ctrl_err_i2si,
+  BCA_I2s1_Int_Ctrl_smp_i2s,
+  BCA_I2s1_Int_Ctrl_cmb_i2s,
+  BCA_I2s2_Int_Ctrl_done_i2so,
+  BCA_I2s2_Int_Ctrl_err_i2so,
+  BCA_I2s2_Int_Ctrl_done_i2si,
+  BCA_I2s2_Int_Ctrl_err_i2si,
+  BCA_I2s2_Int_Ctrl_smp_i2s,
+  BCA_I2s2_Int_Ctrl_cmb_i2s,
+  BCA_Mic_Int_Mask_done_mic,
+  BCA_Mic_Int_Mask_err_mic,
+  BCA_Mic_Int_Mask_smp_mic,
+  BCA_Mic_Int_Mask_cmb_mic,
+  BCA_Mic_Int_Mask_nostpmsk,
+  BCA_Mic_Int_Mask_srst_mic,
+  BCA_I2s1_Int_Mask_done_i2so,
+  BCA_I2s1_Int_Mask_err_i2so,
+  BCA_I2s1_Int_Mask_done_i2si,
+  BCA_I2s1_Int_Mask_err_i2si,
+  BCA_I2s1_Int_Mask_smp_i2s,
+  BCA_I2s1_Int_Mask_cmb_i2s,
+  BCA_I2s1_Int_Mask_nostpmsk,
+  BCA_I2s1_Int_Mask_srst_i2s,
+  BCA_I2s2_Int_Mask_done_i2so,
+  BCA_I2s2_Int_Mask_err_i2so,
+  BCA_I2s2_Int_Mask_done_i2si,
+  BCA_I2s2_Int_Mask_err_i2si,
+  BCA_I2s2_Int_Mask_smp_i2s,
+  BCA_I2s2_Int_Mask_cmb_i2s,
+  BCA_I2s2_Int_Mask_nostpmsk,
+  BCA_I2s2_Int_Mask_srst_i2s,
+  BCA_Int_m_hresp_err,
+  BCA_Int_m_i2s1_bck_err1,
+  BCA_Int_m_i2s1_bck_err2,
+  BCA_Int_m_anc_faint,
+  BCA_Int_m_ovf_smasl,
+  BCA_Int_m_ovf_smasr,
+  BCA_Int_m_ovf_dnc1l,
+  BCA_Int_m_ovf_dnc1r,
+  BCA_Int_m_ovf_dnc2l,
+  BCA_Int_m_ovf_dnc2r,
+  BCA_Int_clr_hresp_err,
+  BCA_Int_clr_i2s1_bck_err1,
+  BCA_Int_clr_i2S1_bck_err2,
+  BCA_Int_clr_anc_faint,
+  BCA_Int_clr_ovf_smasl,
+  BCA_Int_clr_ovf_smasr,
+  BCA_Int_clr_ovf_dnc1l,
+  BCA_Int_clr_ovf_dnc1r,
+  BCA_Int_clr_ovf_dnc2l,
+  BCA_Int_clr_ovf_dnc2r,
+  BCA_Int_hresp_err,
+  BCA_Int_i2s_bck_err1,
+  BCA_Int_i2s_bck_err2,
+  BCA_Int_anc_faint,
+  BCA_Int_ovf_smasl,
+  BCA_Int_ovf_smasr,
+  BCA_Int_ovf_dnc1l,
+  BCA_Int_ovf_dnc1r,
+  BCA_Int_ovf_dnc2l,
+  BCA_Int_ovf_dnc2r,
+  BCA_Dbg_Mic_ch1_data,
+  BCA_Dbg_Mic_ch2_data,
+  BCA_Dbg_Mic_ch3_data,
+  BCA_Dbg_Mic_ch4_data,
+  BCA_Dbg_Mic_ch5_data,
+  BCA_Dbg_Mic_ch6_data,
+  BCA_Dbg_Mic_ch7_data,
+  BCA_Dbg_Mic_ch8_data,
+  BCA_Dbg_I2s1_u_ch1_data,
+  BCA_Dbg_I2s1_u_ch2_data,
+  BCA_Dbg_I2s1_d_ch1_data,
+  BCA_Dbg_I2s1_d_ch2_data,
+  BCA_Dbg_I2s2_u_ch1_data,
+  BCA_Dbg_I2s2_u_ch2_data,
+  BCA_Dbg_I2s2_d_ch1_data,
+  BCA_Dbg_I2s2_d_ch2_data,
+  BCA_Dbg_Ctrl_mic_dbg_en,
+  BCA_Dbg_Ctrl_I2s1_dbg_u_en,
+  BCA_Dbg_Ctrl_I2s1_dbg_d_en,
+  BCA_Dbg_Ctrl_I2s2_dbg_u_en,
+  BCA_Dbg_Ctrl_I2s2_dbg_d_en,
+  BCA_Clk_En_ahbmstr_mic_en,
+  BCA_Clk_En_ahbmstr_I2s1_en,
+  BCA_Clk_En_ahbmstr_I2s2_en,
+  BCA_Mclk_Mon_thresh,
+  AHB_Master_Mic_Mask,
+  AHB_Master_I2s1_Mask,
+  AHB_Master_I2s2_Mask,
+  BCA_REG_MAX_ENTRY
+} BCA_REG_ID;
+
+#define DMA_STATE_BIT_AC_DONE        1
+#define DMA_STATE_BIT_AC_ERR         2
+#define DMA_STATE_BIT_AC_CMB         8
+#define DMA_STATE_BIT_I2S_OUT_DONE   1
+#define DMA_STATE_BIT_I2S_OUT_ERR    2
+#define DMA_STATE_BIT_I2S_IN_DONE    4
+#define DMA_STATE_BIT_I2S_IN_ERR     8
+#define DMA_STATE_BIT_I2S_CMB        32
+
+#define DMA_MSTATE_START             1
+#define DMA_MSTART_READY             0
+
+#define DMA_MSTATE_ERR_OK
+#define DMA_MSTATE_ERR_NO_ENABLE_CH  1
+#define DMA_MSTATE_ERR_CH1_4_INVALID 2
+#define DMA_MSTATE_ERR_CH5_8_INVALID 4
+
+#define DMA_MSTATE_BUF_EMPTY         3
+
+#define DMA_CMD_FIFO_NOT_FULL        1
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void cxd56_audio_bca_reg_clear_bck_err_int(void);
+void cxd56_audio_bca_reg_set_smaster(void);
+void cxd56_audio_bca_reg_set_datarate(uint8_t clk_mode);
+
+void cxd56_audio_bca_reg_en_fmt24(cxd56_audio_dma_t handle, uint8_t ch_num);
+void cxd56_audio_bca_reg_en_fmt16(cxd56_audio_dma_t handle, uint8_t ch_num);
+
+void cxd56_audio_bca_reg_en_bus_err_int(void);
+void cxd56_audio_bca_reg_dis_bus_err_int(void);
+
+void cxd56_audio_bca_reg_get_dma_mstate(cxd56_audio_dma_t handle,
+                                        FAR cxd56_audio_dma_mstate_t *state);
+
+uint32_t cxd56_audio_bca_reg_get_dma_done_state_mic(void);
+uint32_t cxd56_audio_bca_reg_get_dma_done_state_i2s1(void);
+uint32_t cxd56_audio_bca_reg_get_dma_done_state_i2s2(void);
+
+void cxd56_audio_bca_reg_mask_done_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_unmask_done_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_clear_done_int(cxd56_audio_dma_t handle);
+
+void cxd56_audio_bca_reg_clear_dma_done_state_mic(uint32_t value);
+void cxd56_audio_bca_reg_clear_dma_done_state_i2s1(uint32_t value);
+void cxd56_audio_bca_reg_clear_dma_done_state_i2s2(uint32_t value);
+
+bool cxd56_audio_bca_reg_is_dma_fifo_empty(cxd56_audio_dma_t handle);
+
+void cxd56_audio_bca_reg_mask_err_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_unmask_err_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_clear_err_int(cxd56_audio_dma_t handle);
+
+void cxd56_audio_bca_reg_mask_cmb_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_unmask_cmb_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_clear_cmb_int(cxd56_audio_dma_t handle);
+
+uint32_t cxd56_audio_bca_reg_get_int_status(void);
+void cxd56_audio_bca_reg_clear_int_status(uint32_t int_au);
+
+void cxd56_audio_bca_reg_mask_bus_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_unmask_bus_int(cxd56_audio_dma_t handle);
+
+void cxd56_audio_bca_reg_set_start_addr(cxd56_audio_dma_t handle,
+                                        uint32_t addr);
+void cxd56_audio_bca_reg_set_sample_no(cxd56_audio_dma_t handle,
+                                       uint32_t sample);
+void cxd56_audio_bca_reg_start_dma(cxd56_audio_dma_t handle,
+                                   bool nointr);
+void cxd56_audio_bca_reg_stop_dma(cxd56_audio_dma_t handle);
+
+bool cxd56_audio_bca_reg_is_done_int(cxd56_audio_dma_t handle);
+bool cxd56_audio_bca_reg_is_err_int(cxd56_audio_dma_t handle);
+
+bool cxd56_audio_bca_reg_is_smp_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_mask_smp_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_unmask_smp_int(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_clear_smp_int(cxd56_audio_dma_t handle);
+
+uint32_t cxd56_audio_bca_reg_get_mon_state_err(cxd56_audio_dma_t handle);
+uint32_t cxd56_audio_bca_reg_get_mon_state_start(cxd56_audio_dma_t handle);
+uint32_t cxd56_audio_bca_reg_get_mon_state_buf(cxd56_audio_dma_t handle);
+uint32_t cxd56_audio_bca_reg_get_dma_state(cxd56_audio_dma_t handle);
+void cxd56_audio_bca_reg_reset_chsel(cxd56_audio_dma_t handle);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BCA_REG_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_beep.c

@@ -0,0 +1,209 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_beep.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_ac_reg.h"
+#include "cxd56_audio_beep.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Maximum frequency. */
+
+#define FREQ_MAX        4085
+
+/* Minimum frequency. */
+
+#define FREQ_MIN        94
+
+/* Maximum volume. */
+
+#define VOL_MAX         0
+
+/* Minimum volume. */
+
+#define VOL_MIN         -90
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static bool g_beep = false;
+
+static const uint16_t g_beepfreqtable[] =
+{
+   120,  127,  134,  142,  151,  160,  169,  180,  190,  201,  214,  226,
+   240,  254,  269,  285,  302,  320,  339,  360,  381,  403,  428,  453,
+   480,  509,  539,  571,  606,  642,  681,  719,  762,  810,  857,  910,
+   965, 1021, 1079, 1143, 1215, 1289, 1362, 1444, 1536, 1627, 1714, 1829,
+  1939, 2043, 2182, 2313, 2400, 2560, 2704, 2866, 3048, 3200, 3429, 3623,
+  3840, 4085,   94
+};
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+uint32_t convert_freq(uint32_t freq)
+{
+  uint32_t prev;
+  uint32_t i;
+
+  for (i = 0; i < sizeof(g_beepfreqtable) / sizeof(uint16_t); i++)
+    {
+      prev = (i + 62) % 63;
+      if (freq < g_beepfreqtable[i])
+        {
+          if (prev == 62)
+            {
+              break;
+            }
+          else if(g_beepfreqtable[prev] <= freq)
+            {
+              break;
+            }
+        }
+    }
+
+  return prev;
+}
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_beep_set_freq(uint16_t freq)
+{
+  uint32_t conv_freq = 0;
+
+  if (freq > FREQ_MAX)
+    {
+      return CXD56_AUDIO_ECODE_BEP_FREQ_MAX;
+    }
+
+  if (freq < FREQ_MIN)
+    {
+      return CXD56_AUDIO_ECODE_BEP_FREQ_MIN;
+    }
+
+  /* Mute beep. */
+
+  cxd56_audio_ac_reg_disable_beep();
+
+  /* Convert Frequency. */
+
+  conv_freq = convert_freq(freq);
+
+  /* Set beep parameter. */
+
+  cxd56_audio_ac_reg_set_beep_freq(conv_freq);
+
+  if (g_beep)
+    {
+      cxd56_audio_ac_reg_enable_beep();
+    }
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_beep_set_vol(int16_t vol)
+{
+  uint32_t conv_vol  = 0;
+
+  if (vol > VOL_MAX)
+    {
+      return CXD56_AUDIO_ECODE_BEP_VOL_MAX;
+    }
+
+  if (vol < VOL_MIN)
+    {
+      return CXD56_AUDIO_ECODE_BEP_VOL_MIN;
+    }
+
+  /* Mute off. */
+
+  cxd56_audio_ac_reg_disable_beep();
+
+  /* Convert Volume. */
+
+  if (vol != 0)
+    {
+      conv_vol = -vol / 3;
+    }
+  else
+    {
+      conv_vol = 0;
+    }
+
+  /* Set beep parameter. */
+
+  cxd56_audio_ac_reg_set_beep_vol(conv_vol);
+
+  if (g_beep)
+    {
+      cxd56_audio_ac_reg_enable_beep();
+    }
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+void cxd56_audio_beep_play(void)
+{
+  g_beep = true;
+
+  cxd56_audio_ac_reg_enable_beep();
+}
+
+void cxd56_audio_beep_stop(void)
+{
+  g_beep = false;
+
+  cxd56_audio_ac_reg_disable_beep();
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_beep.h

@@ -0,0 +1,70 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_beep.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BEEP_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BEEP_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_beep_set_freq(uint16_t freq);
+CXD56_AUDIO_ECODE cxd56_audio_beep_set_vol(int16_t vol);
+void cxd56_audio_beep_play(void);
+void cxd56_audio_beep_stop(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_BEEP_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_config.c

@@ -0,0 +1,197 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_config.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include "cxd56_audio_config.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define MIC_CH_BITNUM  4
+#define MIC_CH_BITMAP  0xf
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+struct cxd56_audio_cfg_s
+{
+  uint8_t mic_num;
+  uint8_t mic_dev;
+  uint8_t mic_mode;
+  uint32_t mic_map;
+  cxd56_audio_clkmode_t clk_mode;
+  cxd56_audio_sp_drv_t  sp_driver;
+};
+static struct cxd56_audio_cfg_s g_audio_cfg =
+{
+  1,
+  CXD56_AUDIO_CFG_MIC_DEV_ANADIG,
+  CXD56_AUDIO_CFG_MIC_MODE_64FS,
+  CXD56_AUDIO_CFG_MIC,
+  CXD56_AUDIO_CLKMODE_NORMAL,
+  CXD56_AUDIO_CFG_SP_DRIVER
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static void set_miccfg(void)
+{
+  bool is_amic = false;
+  bool is_dmic = false;
+  uint8_t mic_num = 0;
+  uint8_t mic_sel = 0;
+  uint8_t i;
+
+  for (i = 0; i < CXD56_AUDIO_MIC_CH_MAX; i++)
+    {
+      mic_sel = (g_audio_cfg.mic_map >> (i * MIC_CH_BITNUM)) &
+                MIC_CH_BITMAP;
+      if ((mic_sel >= 1) && (mic_sel <= 4))
+        {
+          is_amic = true;
+          mic_num++;
+        }
+      else if ((mic_sel >= 5) && (mic_sel <= 12))
+        {
+          is_dmic = true;
+          mic_num++;
+        }
+    }
+
+  /* Set mic number. */
+
+  g_audio_cfg.mic_num = mic_num;
+
+  /* Set mic device type and mode. */
+
+  if (is_amic)
+    {
+      if(is_dmic)
+        {
+          g_audio_cfg.mic_dev  = CXD56_AUDIO_CFG_MIC_DEV_ANADIG;
+          g_audio_cfg.mic_mode = CXD56_AUDIO_CFG_MIC_MODE_64FS;
+        }
+      else
+        {
+          g_audio_cfg.mic_dev  = CXD56_AUDIO_CFG_MIC_DEV_ANALOG;
+          g_audio_cfg.mic_mode = CXD56_AUDIO_CFG_MIC_MODE_128FS;
+        }
+    }
+  else
+    {
+      if(is_dmic)
+        {
+          g_audio_cfg.mic_dev  = CXD56_AUDIO_CFG_MIC_DEV_DIGITAL;
+          g_audio_cfg.mic_mode = CXD56_AUDIO_CFG_MIC_MODE_64FS;
+        }
+      else
+        {
+          g_audio_cfg.mic_dev  = CXD56_AUDIO_CFG_MIC_DEV_NONE;
+          g_audio_cfg.mic_mode = CXD56_AUDIO_CFG_MIC_MODE_64FS;
+        }
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void cxd56_audio_config_init(void)
+{
+  /* Set mic config */
+
+  set_miccfg();
+}
+
+uint8_t cxd56_audio_config_get_micmode(void)
+{
+  return g_audio_cfg.mic_mode;
+}
+
+uint8_t cxd56_audio_config_get_micdev(void)
+{
+  return g_audio_cfg.mic_dev;
+}
+
+uint8_t cxd56_audio_config_get_micnum(void)
+{
+  return g_audio_cfg.mic_num;
+}
+
+void cxd56_audio_config_set_spdriver(cxd56_audio_sp_drv_t sp_driver)
+{
+  g_audio_cfg.sp_driver = sp_driver;
+}
+
+cxd56_audio_sp_drv_t cxd56_audio_config_get_spdriver(void)
+{
+  return g_audio_cfg.sp_driver;
+}
+
+void cxd56_audio_config_set_clkmode(cxd56_audio_clkmode_t mode)
+{
+  g_audio_cfg.clk_mode = mode;
+}
+
+cxd56_audio_clkmode_t cxd56_audio_config_get_clkmode(void)
+{
+  return g_audio_cfg.clk_mode;
+}
+
+void cxd56_audio_config_set_micmap(uint32_t map)
+{
+  g_audio_cfg.mic_map = map;
+}
+
+uint32_t cxd56_audio_config_get_micmap(void)
+{
+  return g_audio_cfg.mic_map;
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_config.h

@@ -0,0 +1,383 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_config.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_CONFIG_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_CONFIG_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+enum cxd56_audio_cfg_mic_mode_e
+{
+  CXD56_AUDIO_CFG_MIC_MODE_64FS = 0,
+  CXD56_AUDIO_CFG_MIC_MODE_128FS
+};
+
+enum cxd56_audio_cfg_mic_dev_e
+{
+  CXD56_AUDIO_CFG_MIC_DEV_NONE = 0,
+  CXD56_AUDIO_CFG_MIC_DEV_ANALOG,
+  CXD56_AUDIO_CFG_MIC_DEV_DIGITAL,
+  CXD56_AUDIO_CFG_MIC_DEV_ANADIG
+};
+
+enum cxd56_audio_cfg_mic_bias_e
+{
+  CXD56_AUDIO_CFG_MIC_BIAS_20V = 0,
+  CXD56_AUDIO_CFG_MIC_BIAS_28V
+};
+
+enum cxd56_audio_cfg_xtal_e
+{
+  CXD56_AUDIO_CFG_XTAL_24_576MHZ = 0,
+  CXD56_AUDIO_CFG_XTAL_49_152MHZ
+};
+
+enum cxd56_audio_cfg_ds_e
+{
+  CXD56_AUDIO_CFG_DS_WEAKEST = 0,
+  CXD56_AUDIO_CFG_DS_WEAKER,
+  CXD56_AUDIO_CFG_DS_STRONGER,
+  CXD56_AUDIO_CFG_DS_STRONGEST
+};
+
+enum cxd56_audio_cfg_i2s_mode_e
+{
+  CXD56_AUDIO_CFG_I2S_MODE_MASTER = 0,
+  CXD56_AUDIO_CFG_I2S_MODE_SLAVE
+};
+
+enum cxd56_audio_cfg_i2s_format_e
+{
+  CXD56_AUDIO_CFG_I2S_FORMAT_NORMAL = 0,
+  CXD56_AUDIO_CFG_I2S_FORMAT_LEFT
+};
+
+enum cxd56_audio_cfg_i2s_bypass_e
+{
+  CXD56_AUDIO_CFG_I2S_BYPASS_DISABLE = 0,
+  CXD56_AUDIO_CFG_I2S_BYPASS_ENABLE
+};
+
+enum cxd56_audio_cfg_cic_in_sel_e
+{
+  CXD56_AUDIO_CFG_CIC_IN_SEL_NONE = 0,
+  CXD56_AUDIO_CFG_CIC_IN_SEL_CXD,
+  CXD56_AUDIO_CFG_CIC_IN_SEL_DMICIF
+};
+
+enum cxd56_audio_cfg_alc_spc_sel_e
+{
+  CXD56_AUDIO_CFG_ALCSPC_NONE = 0,
+  CXD56_AUDIO_CFG_ALCSPC_ALC,
+  CXD56_AUDIO_CFG_ALCSPC_SPC
+};
+
+#define CXD56_AUDIO_CFG_SPC_LIMIT_DEFAULT  0
+#define CXD56_AUDIO_CFG_ALC_TARGET_DEFAULT 0
+#define CXD56_AUDIO_CFG_ALC_KNEE_DEFAULT   0
+
+enum cxd56_audio_cfg_dma_formatl_e
+{
+  CXD56_AUDIO_CFG_DMA_FORMAT_LR = 0,
+  CXD56_AUDIO_CFG_DMA_FORMAT_RL
+};
+
+enum cxd56_audio_cfg_hpadc_mic_bias_e
+{
+  CXD56_AUDIO_CFG_HPADC_MIC_BIAS_OFF = 0,
+  CXD56_AUDIO_CFG_HPADC_MIC_BIAS_ON
+};
+
+enum cxd56_audio_cfg_sp_spliton_e
+{
+  CXD56_AUDIO_CFG_SP_SPLITON_LONGEST = 0,
+  CXD56_AUDIO_CFG_SP_SPLITON_LONG,
+  CXD56_AUDIO_CFG_SP_SPLITON_SHORT,
+  CXD56_AUDIO_CFG_SP_SPLITON_SHORTEST
+};
+
+/* Mic bias voltage select */
+
+#if defined(CONFIG_CXD56_AUDIO_MICBIAS_20V)
+#  define CXD56_AUDIO_CFG_MIC_BIAS   CXD56_AUDIO_CFG_MIC_BIAS_20V
+#else
+#  define CXD56_AUDIO_CFG_MIC_BIAS   CXD56_AUDIO_CFG_MIC_BIAS_28V
+#endif
+
+/* Master clock select */
+
+#if defined(CONFIG_CXD56_AUDIO_XTAL_SEL_49_152MHZ)
+#  define CXD56_AUDIO_CFG_MCLK   CXD56_AUDIO_CFG_XTAL_49_152MHZ
+#else
+#  define CXD56_AUDIO_CFG_MCLK   CXD56_AUDIO_CFG_XTAL_24_576MHZ
+#endif
+
+/* Mic select */
+
+#define CXD56_AUDIO_CFG_MIC   CONFIG_CXD56_AUDIO_MIC_CHANNEL_SEL
+
+/* Drive strength of global pin output-A */
+
+#if defined(CONFIG_CXD56_AUDIO_GPO_A_WEAKEST)
+#  define CXD56_AUDIO_CFG_GPO_A_DS    CXD56_AUDIO_CFG_DS_WEAKEST
+#elif defined(CONFIG_CXD56_AUDIO_GPO_A_WEAKER)
+#  define CXD56_AUDIO_CFG_GPO_A_DS    CXD56_AUDIO_CFG_DS_WEAKER
+#elif defined(CONFIG_CXD56_AUDIO_GPO_A_STRONGER)
+#  define CXD56_AUDIO_CFG_GPO_A_DS    CXD56_AUDIO_CFG_DS_STRONGER
+#else
+#  define CXD56_AUDIO_CFG_GPO_A_DS    CXD56_AUDIO_CFG_DS_STRONGEST
+#endif
+
+/* Drive strength of D/A converted data */
+
+#if defined(CONFIG_CXD56_AUDIO_DA_DATA_WEAKEST)
+#  define CXD56_AUDIO_CFG_DA_DS    CXD56_AUDIO_CFG_DS_WEAKEST
+#elif defined(CONFIG_CXD56_AUDIO_DA_DATA_WEAKER)
+#  define CXD56_AUDIO_CFG_DS_DS    CXD56_AUDIO_CFG_DS_WEAKER
+#elif defined(CONFIG_CXD56_AUDIO_DA_DATA_STRONGER)
+#  define CXD56_AUDIO_CFG_DA_DS    CXD56_AUDIO_CFG_DS_STRONGER
+#else
+#  define CXD56_AUDIO_CFG_DA_DS    CXD56_AUDIO_CFG_DS_STRONGEST
+#endif
+
+/* Drive strength of digital mic clock */
+
+#if defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_WEAKEST)
+#  define CXD56_AUDIO_CFG_DMIC_CLK_DS    CXD56_AUDIO_CFG_DS_WEAKEST
+#elif defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_WEAKER)
+#  define CXD56_AUDIO_CFG_DMIC_CLK_DS    CXD56_AUDIO_CFG_DS_WEAKER
+#elif defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_STRONGER)
+#  define CXD56_AUDIO_CFG_DMIC_CLK_DS    CXD56_AUDIO_CFG_DS_STRONGER
+#else
+#  define CXD56_AUDIO_CFG_DMIC_CLK_DS    CXD56_AUDIO_CFG_DS_STRONGEST
+#endif
+
+/* Drive strength of master clock */
+
+#if defined(CONFIG_CXD56_AUDIO_MCLKOUT_WEAKEST)
+#  define CXD56_AUDIO_CFG_MCLKOUT_DS    CXD56_AUDIO_CFG_DS_WEAKEST
+#elif defined(CONFIG_CXD56_AUDIO_MCLKOUT_WEAKER)
+#  define CXD56_AUDIO_CFG_MCLKOUT_DS    CXD56_AUDIO_CFG_DS_WEAKER
+#elif defined(CONFIG_CXD56_AUDIO_MCLKOUT_STRONGER)
+#  define CXD56_AUDIO_CFG_MCLKOUT_DS    CXD56_AUDIO_CFG_DS_STRONGER
+#else
+#  define CXD56_AUDIO_CFG_MCLKOUT_DS    CXD56_AUDIO_CFG_DS_STRONGEST
+#endif
+
+/* I2S mode of I2S1 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_DEVICE_1_MASTER)
+#  define CXD56_AUDIO_CFG_I2S1_MODE    CXD56_AUDIO_CFG_I2S_MODE_MASTER
+#else
+#  define CXD56_AUDIO_CFG_I2S1_MODE    CXD56_AUDIO_CFG_I2S_MODE_SLAVE
+#endif
+
+/* I2S format of I2S1 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_FORMAT_1_LEFT)
+#  define CXD56_AUDIO_CFG_I2S1_FORMAT  CXD56_AUDIO_CFG_I2S_FORMAT_LEFT
+#else
+#  define CXD56_AUDIO_CFG_I2S1_FORMAT  CXD56_AUDIO_CFG_I2S_FORMAT_NORMAL
+#endif
+
+/* I2S bypass mode of I2S1 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_BYPASS_MODE_1_ENABLE)
+#  define CXD56_AUDIO_CFG_I2S1_BYPASS  CXD56_AUDIO_CFG_I2S_BYPASS_ENABLE
+#else
+#  define CXD56_AUDIO_CFG_I2S1_BYPASS  CXD56_AUDIO_CFG_I2S_BYPASS_DISABLE
+#endif
+
+/* I2S data rate of I2S1 */
+
+#if defined(CONFIG_CXD56_I2S0)
+#  define CXD56_AUDIO_CFG_I2S1_DATA_RATE   CONFIG_CXD56_AUDIO_I2S_RATE_1
+#else
+#  define CXD56_AUDIO_CFG_I2S1_DATA_RATE   0
+#endif
+
+/* I2S mode of I2S2 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_DEVICE_2_MASTER)
+#  define CXD56_AUDIO_CFG_I2S2_MODE    CXD56_AUDIO_CFG_I2S_MODE_MASTER
+#else
+#  define CXD56_AUDIO_CFG_I2S2_MODE    CXD56_AUDIO_CFG_I2S_MODE_SLAVE
+#endif
+
+/* I2S format of I2S2 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_FORMAT_2_LEFT)
+#  define CXD56_AUDIO_CFG_I2S2_FORMAT  CXD56_AUDIO_CFG_I2S_FORMAT_LEFT
+#else
+#  define CXD56_AUDIO_CFG_I2S2_FORMAT  CXD56_AUDIO_CFG_I2S_FORMAT_NORMAL
+#endif
+
+/* I2S bypass mode of I2S2 */
+
+#if defined(CONFIG_CXD56_AUDIO_I2S_BYPASS_MODE_2_ENABLE)
+#  define CXD56_AUDIO_CFG_I2S2_BYPASS  CXD56_AUDIO_CFG_I2S_BYPASS_ENABLE
+#else
+#  define CXD56_AUDIO_CFG_I2S2_BYPASS  CXD56_AUDIO_CFG_I2S_BYPASS_DISABLE
+#endif
+
+/* I2S data rate of I2S2 */
+
+#if defined(CONFIG_CXD56_I2S1)
+#  define CXD56_AUDIO_CFG_I2S2_DATA_RATE   CONFIG_CXD56_AUDIO_I2S_RATE_2
+#else
+#  define CXD56_AUDIO_CFG_I2S2_DATA_RATE   0
+#endif
+
+/* CIC filter input path */
+
+#if defined(CONFIG_CXD56_AUDIO_CIC_IN_SEL_CXD)
+#  define CXD56_AUDIO_CFG_CIC_IN  CXD56_AUDIO_CFG_CIC_IN_SEL_CXD
+#elif defined (CONFIG_CXD56_AUDIO_CIC_IN_SEL_DMIC)
+#  define CXD56_AUDIO_CFG_CIC_IN  CXD56_AUDIO_CFG_CIC_IN_SEL_DMICIF
+#else
+#  define CXD56_AUDIO_CFG_CIC_IN  CXD56_AUDIO_CFG_CIC_IN_SEL_NONE
+#endif
+
+/* Wait time of mic boot */
+
+#define CXD56_AUDIO_MIC_BOOT_WAIT CONFIG_CXD56_AUDIO_MIC_BOOT_WAIT
+
+/* ALC and SPC filter select */
+
+#if defined(CONFIG_CXD56_AUDIO_ALC_SPC_SEL_OFF)
+#  define CXD56_AUDIO_CFG_ALCSPC  CXD56_AUDIO_CFG_ALCSPC_NONE
+#elif defined (CONFIG_CXD56_AUDIO_ALC_SPC_SEL_ALC)
+#  define CXD56_AUDIO_CFG_ALCSPC  CXD56_AUDIO_CFG_ALCSPC_ALC
+#else
+#  define CXD56_AUDIO_CFG_ALCSPC  CXD56_AUDIO_CFG_ALCSPC_SPC
+#endif
+
+/* SPC limit level */
+
+#if defined(CONFIG_CXD56_AUDIO_ALC_SPC_SEL_SPC)
+#  define CXD56_AUDIO_CFG_SPC_LIMIT  CONFIG_CXD56_AUDIO_SPC_LIMIT
+#else
+#  define CXD56_AUDIO_CFG_SPC_LIMIT  CXD56_AUDIO_CFG_SPC_LIMIT_DEFAULT
+#endif
+
+/* ALC target level */
+
+#if defined(CONFIG_CXD56_AUDIO_ALC_SPC_SEL_ALC)
+#  define CXD56_AUDIO_CFG_ALC_TARGET   CONFIG_CXD56_AUDIO_ALC_TARGET
+#else
+#  define CXD56_AUDIO_CFG_ALC_TARGET   CXD56_AUDIO_CFG_ALC_TARGET_DEFAULT
+#endif
+
+/* ALC knee point */
+
+#if defined(CONFIG_CXD56_AUDIO_ALC_SPC_SEL_ALC)
+#  define CXD56_AUDIO_CFG_ALC_KNEE  CONFIG_CXD56_AUDIO_ALC_KNEE
+#else
+#  define CXD56_AUDIO_CFG_ALC_KNEE  CXD56_AUDIO_CFG_ALC_KNEE_DEFAULT
+#endif
+
+/* DMA format */
+
+#if defined(CONFIG_CXD56_AUDIO_DMA_DATA_FORMAT_LR)
+#  define CXD56_AUDIO_CFG_DMA_FORMAT  CXD56_AUDIO_CFG_DMA_FORMAT_LR
+#else
+#  define CXD56_AUDIO_CFG_DMA_FORMAT  CXD56_AUDIO_CFG_DMA_FORMAT_RL
+#endif
+
+/* Mic bias for HPADC */
+
+#if defined(CONFIG_CXD56_AUDIO_HPADC_MIC_BIAS_ON)
+#  define CXD56_AUDIO_CFG_HPADC_MIC_BIAS  CXD56_AUDIO_CFG_HPADC_MIC_BIAS_ON
+#else
+#  define CXD56_AUDIO_CFG_HPADC_MIC_BIAS  CXD56_AUDIO_CFG_HPADC_MIC_BIAS_OFF
+#endif
+
+/* Speaker time split on drive */
+
+#if defined(CONFIG_CXD56_AUDIO_SP_SPLIT_LONGEST)
+#  define CXD56_AUDIO_CFG_SP_SPLIT_ON    CXD56_AUDIO_CFG_SP_SPLITON_LONGEST
+#elif defined(CONFIG_CXD56_AUDIO_SP_SPLIT_LONG)
+#  define CXD56_AUDIO_CFG_SP_SPLIT_ON    CXD56_AUDIO_CFG_SP_SPLITON_LONG
+#elif defined(CONFIG_CXD56_AUDIO_SP_SPLIT_SHORT)
+#  define CXD56_AUDIO_CFG_SP_SPLIT_ON    CXD56_AUDIO_CFG_SP_SPLITON_SHORT
+#else
+#  define CXD56_AUDIO_CFG_SP_SPLIT_ON    CXD56_AUDIO_CFG_SP_SPLITON_SHORTEST
+#endif
+
+/* Speaker drive mode */
+
+#if defined(CONFIG_CXD56_AUDIO_SP_DRV_LINEOUT)
+#  define CXD56_AUDIO_CFG_SP_DRIVER   CXD56_AUDIO_SP_DRV_LINEOUT
+#elif defined(CONFIG_CXD56_AUDIO_SP_DRV_1DRIVERT)
+#  define CXD56_AUDIO_CFG_SP_DRIVER   CXD56_AUDIO_SP_DRV_1DRIVER
+#elif defined(CONFIG_CXD56_AUDIO_SP_DRV_2DRIVERT)
+#  define CXD56_AUDIO_CFG_SP_DRIVER   CXD56_AUDIO_SP_DRV_2DRIVER
+#else
+#  define CXD56_AUDIO_CFG_SP_DRIVER   CXD56_AUDIO_SP_DRV_4DRIVER
+#endif
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void cxd56_audio_config_init(void);
+uint8_t cxd56_audio_config_get_micmode(void);
+uint8_t cxd56_audio_config_get_micdev(void);
+uint8_t cxd56_audio_config_get_micnum(void);
+void cxd56_audio_config_set_spdriver(cxd56_audio_sp_drv_t sp_driver);
+cxd56_audio_sp_drv_t cxd56_audio_config_get_spdriver(void);
+void cxd56_audio_config_set_clkmode(cxd56_audio_clkmode_t mode);
+cxd56_audio_clkmode_t cxd56_audio_config_get_clkmode(void);
+void cxd56_audio_config_set_micmap(uint32_t map);
+uint32_t cxd56_audio_config_get_micmap(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_CONFIG_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_digital.c

@@ -0,0 +1,115 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_digital.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <arch/chip/audio.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_ac_reg.h"
+#include "cxd56_audio_bca_reg.h"
+#include "cxd56_audio_digital.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void cxd56_audio_digital_poweron(void)
+{
+#if defined(CONFIG_CXD56_I2S0) || defined(CONFIG_CXD56_I2S1)
+  cxd56_audio_clkmode_t clk_mode = cxd56_audio_config_get_clkmode();
+
+  /* Clear interrupt status of bck_err. */
+
+  cxd56_audio_bca_reg_clear_bck_err_int();
+
+  /* PowerON i2s. */
+
+  cxd56_audio_ac_reg_poweron_i2s(clk_mode);
+#endif /* defined(CONFIG_CXD56_I2S0) || defined(CONFIG_CXD56_I2S1) */
+}
+
+void cxd56_audio_digital_enable(void)
+{
+#if defined(CONFIG_CXD56_I2S0) || defined(CONFIG_CXD56_I2S1)
+
+#ifdef CONFIG_CXD56_I2S0
+  /* Enable I2S data input and output of SRC1 */
+
+  cxd56_audio_ac_reg_enable_i2s_src1();
+#endif /* CONFIG_CXD56_I2S0 */
+
+#ifdef CONFIG_CXD56_I2S1
+  /* Enable I2S data input and output of SRC2 */
+
+  cxd56_audio_ac_reg_enable_i2s_src2();
+#endif /* CONFIG_CXD56_I2S1 */
+
+  if ((CXD56_AUDIO_CFG_I2S1_MODE == CXD56_AUDIO_CFG_I2S_MODE_MASTER) ||
+      (CXD56_AUDIO_CFG_I2S2_MODE == CXD56_AUDIO_CFG_I2S_MODE_MASTER))
+    {
+      /* Enable BCK, LRCK output. */
+
+      cxd56_audio_ac_reg_enable_i2s_bcklrckout();
+    }
+  else
+    {
+      cxd56_audio_ac_reg_disable_i2s_bcklrckout();
+    }
+#endif /* defined(CONFIG_CXD56_I2S0) || defined(CONFIG_CXD56_I2S1) */
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_digital.h

@@ -0,0 +1,68 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_digital.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DIGITAL_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DIGITAL_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void cxd56_audio_digital_poweron(void);
+void cxd56_audio_digital_enable(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DIGITAL_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_dma.h

@@ -0,0 +1,81 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_dma.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DMA_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DMA_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_dma_get_handle(cxd56_audio_dma_path_t path,
+                                             FAR cxd56_audio_dma_t *handle);
+CXD56_AUDIO_ECODE cxd56_audio_dma_free_handle(cxd56_audio_dma_t handle);
+CXD56_AUDIO_ECODE cxd56_audio_dma_init(cxd56_audio_dma_t handle,
+                                       cxd56_audio_samp_fmt_t fmt,
+                                       FAR uint8_t *ch_num);
+CXD56_AUDIO_ECODE cxd56_audio_dma_set_cb(cxd56_audio_dma_t handle,
+                                         FAR cxd56_audio_dma_cb_t cb);
+CXD56_AUDIO_ECODE cxd56_audio_dma_get_mstate(cxd56_audio_dma_t handle,
+                                             FAR cxd56_audio_dma_mstate_t *state);
+CXD56_AUDIO_ECODE cxd56_audio_dma_en_dmaint(void);
+CXD56_AUDIO_ECODE cxd56_audio_dma_dis_dmaint(void);
+CXD56_AUDIO_ECODE cxd56_audio_dma_start(cxd56_audio_dma_t handle,
+                                        uint32_t addr,
+                                        uint32_t sample);
+CXD56_AUDIO_ECODE cxd56_audio_dma_stop(cxd56_audio_dma_t handle);
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_DMA_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_filter.c

@@ -0,0 +1,140 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_filter.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_filter.h"
+#include "cxd56_audio_ac_reg.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_filter_set_cstereo(bool en,
+                                                 bool sign_inv,
+                                                 int16_t vol)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+  if (en)
+    {
+      ret = cxd56_audio_ac_reg_enable_cstereo(sign_inv, vol);
+    }
+  else
+    {
+      cxd56_audio_ac_reg_disable_cstereo();
+    }
+
+  return ret;
+}
+
+void cxd56_audio_filter_poweron_dnc(void)
+{
+  cxd56_audio_ac_reg_poweron_dnc();
+}
+
+void cxd56_audio_filter_poweroff_dnc(void)
+{
+  cxd56_audio_ac_reg_poweroff_dnc();
+}
+
+void cxd56_audio_filter_set_dnc(cxd56_audio_dnc_id_t id,
+                                bool en,
+                                FAR cxd56_audio_dnc_bin_t *bin)
+{
+  /* Desable DNC. */
+
+  cxd56_audio_ac_reg_disable_dnc(id);
+
+  /* Set binary data to SRAM. */
+
+  if (bin != NULL)
+    {
+      cxd56_audio_ac_reg_set_dncram(id, bin);
+    }
+
+  /* Enable DNC. */
+
+  if (en)
+    {
+      cxd56_audio_ac_reg_enable_dnc(id);
+    }
+}
+
+void cxd56_audio_filter_set_deq(bool en,
+                                FAR cxd56_audio_deq_coef_t *deq)
+{
+  /* Disable DEQ. */
+
+  cxd56_audio_ac_reg_disable_deq();
+
+  /* Set DEQ coef data to register. */
+
+  if (deq != NULL)
+    {
+      cxd56_audio_ac_reg_set_deq_param(deq);
+    }
+
+  /* Enable DEQ. */
+
+  if (en)
+    {
+      cxd56_audio_ac_reg_enable_deq();
+    }
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_filter.h

@@ -0,0 +1,76 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_filter.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_FILTER_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_FILTER_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_filter_set_cstereo(bool en,
+                                                 bool sign_inv,
+                                                 int16_t vol);
+void cxd56_audio_filter_poweron_dnc(void);
+void cxd56_audio_filter_poweroff_dnc(void);
+void cxd56_audio_filter_set_dnc(cxd56_audio_dnc_id_t id,
+                                bool en,
+                                FAR cxd56_audio_dnc_bin_t *bin);
+void cxd56_audio_filter_set_deq(bool en,
+                                FAR cxd56_audio_deq_coef_t *deq);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_FILTER_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_irq.c

@@ -0,0 +1,100 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_irq.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+
+#include "cxd56_audio_irq.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+extern void CXD56_audio_dma_int_handler(void);
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void cxd56_audio_irq_attach(void)
+{
+  irq_attach(CXD56_IRQ_AUDIO_0, (xcpt_t)CXD56_audio_dma_int_handler, NULL);
+  irq_attach(CXD56_IRQ_AUDIO_1, (xcpt_t)CXD56_audio_dma_int_handler, NULL);
+  irq_attach(CXD56_IRQ_AUDIO_2, (xcpt_t)CXD56_audio_dma_int_handler, NULL);
+  irq_attach(CXD56_IRQ_AUDIO_3, (xcpt_t)CXD56_audio_dma_int_handler, NULL);
+}
+
+void cxd56_audio_irq_detach(void)
+{
+  irq_detach(CXD56_IRQ_AUDIO_0);
+  irq_detach(CXD56_IRQ_AUDIO_1);
+  irq_detach(CXD56_IRQ_AUDIO_2);
+  irq_detach(CXD56_IRQ_AUDIO_3);
+}
+
+void cxd56_audio_irq_enable(void)
+{
+  up_enable_irq(CXD56_IRQ_AUDIO_0);
+  up_enable_irq(CXD56_IRQ_AUDIO_1);
+  up_enable_irq(CXD56_IRQ_AUDIO_2);
+}
+
+void cxd56_audio_irq_disable(void)
+{
+  up_disable_irq(CXD56_IRQ_AUDIO_0);
+  up_disable_irq(CXD56_IRQ_AUDIO_1);
+  up_disable_irq(CXD56_IRQ_AUDIO_2);
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_irq.h

@@ -0,0 +1,70 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_irq.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_IRQ_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_IRQ_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void cxd56_audio_irq_attach(void);
+void cxd56_audio_irq_detach(void);
+void cxd56_audio_irq_enable(void);
+void cxd56_audio_irq_disable(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_IRQ_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_mic.c

@@ -0,0 +1,229 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_mic.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <arch/chip/audio.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_mic.h"
+#include "cxd56_audio_ac_reg.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define CIC_NUM           4
+#define CIC_MIC_CH_NUM    2
+
+#define MIC_CH_BITNUM  4
+#define MIC_CH_BITMAP  0xf
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_mic_enable(FAR cxd56_audio_mic_gain_t *gain)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+  uint8_t mic_num;
+  uint8_t cic_num;
+  uint8_t mic_sel;
+  uint8_t mic_mode;
+  uint32_t mic_map;
+  cxd56_audio_mic_gain_t cic_gain;
+  cxd56_audio_clkmode_t clk_mode;
+  uint8_t i;
+
+  /* Get mic number. */
+
+  mic_num = cxd56_audio_config_get_micnum();
+
+  /* Get CIC filter number. */
+
+  cic_num = (mic_num + 1) / CIC_MIC_CH_NUM;
+
+  /* Get mic mode. */
+
+  mic_mode = cxd56_audio_config_get_micmode();
+
+  /* Set cic gain. */
+
+  mic_map = cxd56_audio_config_get_micmap();
+
+  for (i = 0; i < CXD56_AUDIO_MIC_CH_MAX; i++)
+    {
+      mic_sel = (mic_map >> (i * MIC_CH_BITNUM)) &
+                MIC_CH_BITMAP;
+      if ((mic_sel >= 1) && (mic_sel <= 4))
+        {
+          cic_gain.gain[i] = 0;
+        }
+      else
+        {
+          cic_gain.gain[i] = gain->gain[i];
+        }
+    }
+
+  ret = cxd56_audio_ac_reg_poweron_cic(CXD56_AUDIO_CFG_CIC_IN,
+                                       mic_mode,
+                                       cic_num,
+                                       &cic_gain);
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  clk_mode = cxd56_audio_config_get_clkmode();
+  ret = cxd56_audio_ac_reg_poweron_decim(mic_mode, clk_mode);
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_mic_disable(void)
+{
+  /* Disable DECIM. */
+
+  cxd56_audio_ac_reg_poweroff_decim();
+
+  /* Power off CIC. */
+
+  cxd56_audio_ac_reg_poweroff_cic();
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_mic_set_gain(FAR cxd56_audio_mic_gain_t *gain)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+  uint8_t mic_num;
+  uint8_t cic_num;
+  uint8_t mic_sel;
+  uint32_t mic_map;
+  cxd56_audio_mic_gain_t cic_gain;
+  uint8_t i;
+
+  /* Get mic number. */
+
+  mic_num = cxd56_audio_config_get_micnum();
+
+  /* Get CIC filter number. */
+
+  cic_num = (mic_num + 1) / CIC_MIC_CH_NUM;
+
+  /* Set cic gain. */
+
+  mic_map = cxd56_audio_config_get_micmap();
+
+  for (i = 0; i < CXD56_AUDIO_MIC_CH_MAX; i++)
+    {
+      mic_sel = (mic_map >> (i * MIC_CH_BITNUM)) &
+                MIC_CH_BITMAP;
+      if ((mic_sel >= 1) && (mic_sel <= 4))
+        {
+          cic_gain.gain[i] = 0;
+        }
+      else
+        {
+          cic_gain.gain[i] = gain->gain[i];
+        }
+    }
+
+  cxd56_audio_ac_reg_set_cicgain(cic_num, &cic_gain);
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_mic_set_seloutch(uint8_t dma_mic_num,
+                                               cxd56_audio_samp_fmt_t format)
+{
+  uint8_t i;
+  cxd56_audio_ac_reg_seloutch_t seloutch;
+
+  if ((format == CXD56_AUDIO_SAMP_FMT_16) &&
+      (CXD56_AUDIO_CFG_DMA_FORMAT == CXD56_AUDIO_CFG_DMA_FORMAT_RL))
+    {
+      for (i = 0; i < CXD56_AUDIO_MIC_CH_MAX; i++)
+        {
+          seloutch.ch[i] = (i & 1) ? i - 1 : i + 1;
+        }
+    }
+  else
+    {
+      for (i = 0; i < CXD56_AUDIO_MIC_CH_MAX; i++)
+        {
+          seloutch.ch[i] = i;
+        }
+    }
+
+  if ((format == CXD56_AUDIO_SAMP_FMT_16) && ((dma_mic_num & 1) == 1))
+    {
+      if (CXD56_AUDIO_CFG_DMA_FORMAT == CXD56_AUDIO_CFG_DMA_FORMAT_LR)
+        {
+          seloutch.ch[dma_mic_num] = seloutch.ch[dma_mic_num - 1];
+        }
+      else
+        {
+          seloutch.ch[dma_mic_num - 1] = seloutch.ch[dma_mic_num];
+        }
+    }
+
+  cxd56_audio_ac_reg_set_seloutch(&seloutch);
+
+  return CXD56_AUDIO_ECODE_OK;
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_mic.h

@@ -0,0 +1,71 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_mic.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_MIC_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_MIC_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_mic_enable(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_mic_disable(void);
+CXD56_AUDIO_ECODE cxd56_audio_mic_set_gain(FAR cxd56_audio_mic_gain_t *gain);
+CXD56_AUDIO_ECODE cxd56_audio_mic_set_seloutch(uint8_t mic_num,
+                                               cxd56_audio_samp_fmt_t format);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_MIC_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_pin.c

@@ -0,0 +1,60 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_pin.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include "cxd56_audio_pin.h"
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void cxd56_audio_pin_i2s_set(void)
+{
+  /* Enable I2S. */
+
+  board_audio_i2s_enable();
+}
+
+void cxd56_audio_pin_i2s_unset(void)
+{
+  /* Disable I2S. */
+
+  board_audio_i2s_disable();
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_pin.h

@@ -0,0 +1,68 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_pin.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_PIN_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_PIN_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/board/board.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void cxd56_audio_pin_i2s_set(void);
+void cxd56_audio_pin_i2s_unset(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_PIN_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_power.c

@@ -0,0 +1,138 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_power.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/irq.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+#include <arch/chip/audio.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_power.h"
+#include "cxd56_audio_digital.h"
+#include "cxd56_audio_ac_reg.h"
+#include "cxd56_audio_bca_reg.h"
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static CXD56_AUDIO_ECODE power_on_codec(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+  cxd56_audio_clkmode_t clk_mode = cxd56_audio_config_get_clkmode();
+
+  ret = cxd56_audio_ac_reg_checkid();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  cxd56_audio_ac_reg_initdsp();
+  cxd56_audio_ac_reg_poweron_sdes();
+
+  uint8_t mic_mode = cxd56_audio_config_get_micmode();
+  ret = cxd56_audio_ac_reg_set_micmode(mic_mode);
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  cxd56_audio_ac_reg_poweron_codec();
+  cxd56_audio_digital_poweron();
+  cxd56_audio_ac_reg_resetdsp();
+  cxd56_audio_digital_enable();
+  cxd56_audio_ac_reg_enable_serialif();
+  cxd56_audio_ac_reg_init_selector();
+
+  ret = cxd56_audio_ac_reg_set_alcspc();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  cxd56_audio_bca_reg_set_datarate(clk_mode);
+
+  return ret;
+}
+
+/***************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_power_on(void)
+{
+  CXD56_AUDIO_ECODE ret = CXD56_AUDIO_ECODE_OK;
+
+  /* Power on audio codec block. */
+
+  ret = power_on_codec();
+  if (CXD56_AUDIO_ECODE_OK != ret)
+    {
+      return ret;
+    }
+
+  return ret;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_power_off(void)
+{
+  /* Power off audio codec block. */
+
+  cxd56_audio_ac_reg_poweroff_codec();
+
+  return CXD56_AUDIO_ECODE_OK;
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_power.h

@@ -0,0 +1,68 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_power.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_POWER_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_POWER_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_power_on(void);
+CXD56_AUDIO_ECODE cxd56_audio_power_off(void);
+
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_POWER_H */

boards/arm/cxd56xx/drivers/audio/cxd56_audio_volume.c

@@ -0,0 +1,288 @@
+/****************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_volume.c
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/arch.h>
+#include <nuttx/config.h>
+
+#include "cxd56_audio_config.h"
+#include "cxd56_audio_ac_reg.h"
+#include "cxd56_audio_analog.h"
+#include "cxd56_audio_volume.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Number of volume device. */
+
+#define VOLUME_NUM      3
+
+/* Maximum value. */
+
+#define VOLUME_MAX      120
+
+/* Minimum value. */
+
+#define VOLUME_MIN      -1020
+
+/* Mute volume. */
+
+#define VOLUME_MUTE     -1025
+
+#define MUTE_BIT_API  0x01
+#define MUTE_BIT_FADE 0x02
+#define MUTE_VOL_REG  0x33
+#define VOL_WAIT_TIME 20
+#define VOL_TO_REG(vol) (((vol) / 5) & 0xff)
+#define VOL_MUTE_TIME(vol, n_cycle) \
+  (((VOL_TO_REG(vol) - MUTE_VOL_REG) & 0xff) * (n_cycle + 1) * 4 / 48 * 1000)
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type
+ ****************************************************************************/
+
+struct set_vol_prm_s
+{
+  int16_t hold_vol;
+  uint8_t mute_bit;
+};
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct set_vol_prm_s g_volparam[VOLUME_NUM] =
+{
+  {VOLUME_MUTE, MUTE_BIT_API},
+  {VOLUME_MUTE, MUTE_BIT_API},
+  {VOLUME_MUTE, MUTE_BIT_API}
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static CXD56_AUDIO_ECODE set_mute(cxd56_audio_volid_t id,
+                                  bool wait,
+                                  uint8_t type)
+{
+  uint32_t waittime = 0;
+
+  waittime = VOL_MUTE_TIME(g_volparam[id].hold_vol, 1);
+
+  if (g_volparam[id].mute_bit == 0)
+    {
+      switch (id)
+        {
+          case CXD56_AUDIO_VOLID_MIXER_IN1:
+            cxd56_audio_ac_reg_set_vol_sdin1(MUTE_VOL_REG);
+            break;
+
+          case CXD56_AUDIO_VOLID_MIXER_IN2:
+            cxd56_audio_ac_reg_set_vol_sdin2(MUTE_VOL_REG);
+            break;
+
+          default:
+            cxd56_audio_ac_reg_set_vol_dac(MUTE_VOL_REG);
+            break;
+        }
+    }
+
+  if (wait)
+    {
+      usleep(waittime);
+    }
+
+  g_volparam[id].mute_bit |= type;
+
+  if (g_volparam[CXD56_AUDIO_VOLID_MIXER_OUT].mute_bit != 0)
+    {
+      CXD56_AUDIO_ECODE ret = cxd56_audio_analog_disable_output();
+      if (ret != CXD56_AUDIO_ECODE_OK)
+        {
+          return ret;
+        }
+    }
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+static CXD56_AUDIO_ECODE set_unmute(cxd56_audio_volid_t id,
+                                    bool wait,
+                                    uint8_t type)
+{
+  uint32_t waittime = 0;
+
+  g_volparam[id].mute_bit &= ~type;
+
+  if (g_volparam[CXD56_AUDIO_VOLID_MIXER_OUT].mute_bit == 0)
+    {
+      CXD56_AUDIO_ECODE ret = cxd56_audio_analog_enable_output();
+      if (ret != CXD56_AUDIO_ECODE_OK)
+        {
+          return ret;
+        }
+    }
+
+  if (g_volparam[id].mute_bit == 0)
+    {
+      if (type == MUTE_BIT_API)
+        {
+          waittime = VOL_WAIT_TIME;
+        }
+      else
+        {
+          /* fade */
+
+          waittime = VOL_MUTE_TIME(g_volparam[id].hold_vol, 1);
+        }
+
+      uint32_t vol = VOL_TO_REG(g_volparam[id].hold_vol);
+
+      switch (id)
+        {
+          case CXD56_AUDIO_VOLID_MIXER_IN1:
+            cxd56_audio_ac_reg_set_vol_sdin1(vol);
+            break;
+
+          case CXD56_AUDIO_VOLID_MIXER_IN2:
+            cxd56_audio_ac_reg_set_vol_sdin2(vol);
+            break;
+
+          default:
+            cxd56_audio_ac_reg_set_vol_dac(vol);
+            break;
+        }
+
+      if (wait)
+        {
+          usleep(waittime);
+        }
+    }
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_set(cxd56_audio_volid_t id,
+                                         int16_t vol)
+{
+  if (id >= VOLUME_NUM)
+    {
+      return CXD56_AUDIO_ECODE_VOL_ID;
+    }
+
+  if (VOLUME_MIN > vol)
+    {
+      if (VOLUME_MUTE != vol)
+        {
+          return CXD56_AUDIO_ECODE_VOL_MIN;
+        }
+    }
+  if (VOLUME_MAX < vol)
+    {
+      return CXD56_AUDIO_ECODE_VOL_MAX;
+    }
+
+  g_volparam[id].hold_vol = vol;
+  set_unmute(id, true, MUTE_BIT_API);
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_mute(cxd56_audio_volid_t id)
+{
+  if (id >= VOLUME_NUM)
+    {
+      return CXD56_AUDIO_ECODE_VOL_ID;
+    }
+
+  set_mute(id, true, MUTE_BIT_API);
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_unmute(cxd56_audio_volid_t id)
+{
+  if (id >= VOLUME_NUM)
+    {
+      return CXD56_AUDIO_ECODE_VOL_ID;
+    }
+
+  set_unmute(id, true, MUTE_BIT_API);
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_mute_fade(cxd56_audio_volid_t id,
+                                               bool wait)
+{
+  if (id >= VOLUME_NUM)
+    {
+      return CXD56_AUDIO_ECODE_VOL_ID;
+    }
+
+  set_mute(id, wait, MUTE_BIT_FADE);
+
+  return CXD56_AUDIO_ECODE_OK;
+}
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_unmute_fade(cxd56_audio_volid_t id,
+                                                 bool wait)
+{
+  if (id >= VOLUME_NUM)
+    {
+      return CXD56_AUDIO_ECODE_VOL_ID;
+    }
+
+  set_unmute(id, wait, MUTE_BIT_FADE);
+
+  return CXD56_AUDIO_ECODE_OK;
+}

boards/arm/cxd56xx/drivers/audio/cxd56_audio_volume.h

@@ -0,0 +1,72 @@
+/***************************************************************************
+ * arch/arm/src/cxd56xx/cxd56_audio_volume.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_VOLUME_H
+#define __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_VOLUME_H
+
+/***************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/chip/audio.h>
+
+/***************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/***************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/***************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+CXD56_AUDIO_ECODE cxd56_audio_volume_set(cxd56_audio_volid_t id, int16_t vol);
+CXD56_AUDIO_ECODE cxd56_audio_volume_mute(cxd56_audio_volid_t id);
+CXD56_AUDIO_ECODE cxd56_audio_volume_unmute(cxd56_audio_volid_t id);
+CXD56_AUDIO_ECODE cxd56_audio_volume_mute_fade(cxd56_audio_volid_t id,
+                                               bool wait);
+CXD56_AUDIO_ECODE cxd56_audio_volume_unmute_fade(cxd56_audio_volid_t id,
+                                                 bool wait);
+#endif /* __ARCH_ARM_SRC_CXD56XX_CXD56_AUDIO_VOLUME_H */

boards/arm/cxd56xx/spresense/configs/audio/defconfig

@@ -21,6 +21,7 @@ CONFIG_BOARD_LOOPSPERMSEC=5434
 CONFIG_BOOT_RUNFROMISRAM=y
 CONFIG_BUILTIN=y
 CONFIG_CLOCK_MONOTONIC=y
+CONFIG_CXD56_AUDIO=y
 CONFIG_CXD56_BINARY=y
 CONFIG_CXD56_I2C0=y
 CONFIG_CXD56_I2C=y
@@ -28,7 +29,6 @@ CONFIG_CXD56_SDIO=y
 CONFIG_CXD56_SPI4=y
 CONFIG_CXD56_SPI5=y
 CONFIG_CXD56_SPI=y
-CONFIG_CXD56_AUDIO=y
 CONFIG_CXD56_USBDEV=y
 CONFIG_DEBUG_FULLOPT=y
 CONFIG_DEBUG_SYMBOLS=y
@@ -42,6 +42,7 @@ CONFIG_FS_SMARTFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_I2C=y
+CONFIG_LIBM=y
 CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_MMCSD=y
@@ -70,6 +71,7 @@ CONFIG_SDCLONE_DISABLE=y
 CONFIG_SMARTFS_ALIGNED_ACCESS=y
 CONFIG_SMARTFS_MAXNAMLEN=30
 CONFIG_SMARTFS_MULTI_ROOT_DIRS=y
+CONFIG_SPECIFIC_DRIVERS=y
 CONFIG_SPI=y
 CONFIG_START_DAY=6
 CONFIG_START_MONTH=12

boards/arm/cxd56xx/spresense/include/board.h

@@ -56,6 +56,7 @@
 #include "cxd56_wdt.h"
 #include "cxd56_gpioif.h"
 
+#include "cxd56_audio.h"
 #include "cxd56_ak09912.h"
 #include "cxd56_apds9930.h"
 #include "cxd56_apds9960.h"
@@ -214,12 +215,13 @@ enum board_power_device
 
   POWER_AUDIO_DVDD      = PMIC_LSW(2),
   POWER_FLASH           = PMIC_LSW(3),
-  POWER_TCXO            = PMIC_LSW(3),
+  POWER_TCXO            = PMIC_LSW(4),
   POWER_LNA             = PMIC_LSW(4),
 
   /* GPO */
 
-  POWER_AUDIO_AVDD      = PMIC_GPO(0),
+  POWER_AUDIO_AVDD      = PMIC_GPO(1),
+  POWER_AUDIO_MUTE      = PMIC_GPO(6),
   POWER_SENSOR_18V      = PMIC_GPO(1),
   POWER_SENSOR_33V      = PMIC_GPO(2),
   POWER_BMI160          = POWER_SENSOR_18V,

boards/arm/cxd56xx/spresense/include/cxd56_audio.h

@@ -0,0 +1,160 @@
+/****************************************************************************
+ * boards/arm/cxd56xx/spresense/include/cxd56_audio.h
+ *
+ *   Copyright 2018 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_AUDIO_H
+#define __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_AUDIO_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Name: board_aca_power_control
+ *
+ * Description:
+ *   Power on/off the Aca device on the board.
+ *
+ ****************************************************************************/
+
+int board_aca_power_control(int target, bool en);
+
+/****************************************************************************
+ * Name: board_aca_power_monitor
+ *
+ * Description:
+ *   Get status of Power on/off the Aca device on the board.
+ *
+ ****************************************************************************/
+
+bool board_aca_power_monitor(int target);
+
+/****************************************************************************
+ * Name: board_external_amp_mute_control
+ *
+ * Description:
+ *   External Amp. Mute on/off.
+ *    true:  Mute on
+ *    false: Mute off
+ *
+ ****************************************************************************/
+
+int board_external_amp_mute_control(bool en);
+
+/****************************************************************************
+ * Name: board_external_amp_mute_monitor
+ *
+ * Description:
+ *   Get External Amp. Mute status.
+ *    true:  Mute on
+ *    false: Mute off
+ *
+ ****************************************************************************/
+
+bool board_external_amp_mute_monitor(void);
+
+/****************************************************************************
+ * Name: board_audio_i2s_enable
+ *
+ * Description:
+ *   Enable I2S on the board.
+ *   Used by the audio driver. Do not use by users.
+ *
+ ****************************************************************************/
+
+void board_audio_i2s_enable(void);
+
+/****************************************************************************
+ * Name: board_audio_i2s_disable
+ *
+ * Description:
+ *   Disable I2S on the board.
+ *   Used by the audio driver. Do not use by users.
+ *
+ ****************************************************************************/
+
+void board_audio_i2s_disable(void);
+
+/****************************************************************************
+ * Name: board_audio_initialize
+ *
+ * Description:
+ *   Initialize audio I/O on the board.
+ *   Used by the audio driver. Do not use by users.
+ *
+ ****************************************************************************/
+
+void board_audio_initialize(void);
+
+/****************************************************************************
+ * Name: board_audio_finalize
+ *
+ * Description:
+ *   Finalize audio I/O on the board.
+ *   Used by the audio driver. Do not use by users.
+ *
+ ****************************************************************************/
+
+void board_audio_finalize(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_AUDIO_H */