Merged in alinjerpelea/nuttx (pull request #1048)

boards: arm: cxd56xx: audio: add power_control and audio_tone_generator

* boards: arm: cxd56xx: audio: add power_control

    Add a simeple way to control the audio power for userspace apps

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

* boards: arm: cxd56xx: audio: add audio_tone_generator

    Add a simple way to control the audio buzzer with defined frequency
    for userspace apps

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

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

arch/arm/include/cxd56xx/audio.h

@@ -939,6 +939,12 @@ CXD56_AUDIO_ECODE cxd56_audio_set_micmap(uint32_t map);
 
 uint32_t cxd56_audio_get_micmap(void);
 
+/* Tone generator
+ *
+ * Setup tone generator
+ */
+bool board_audio_tone_generator(bool en, int16_t vol, uint16_t freq);
+
 #ifdef __cplusplus
 } /* end of extern "C" */
 #endif /* __cplusplus */

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

@@ -47,6 +47,7 @@
 #include <debug.h>
 
 #include <nuttx/arch.h>
+#include <arch/chip/audio.h>
 
 #include "chip.h"
 #include "up_arch.h"
@@ -104,6 +105,75 @@ static bool check_pin_i2s_mode(uint32_t pin)
  * Public Functions
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: board_audio_power_control
+ *
+ * Description:
+ *   Power on/off the audio device on the board.
+ *
+ ****************************************************************************/
+bool board_audio_power_control(bool en)
+{
+  if (en)
+    {
+      /* Enable I2S pin. */
+
+      cxd56_audio_en_i2s_io();
+
+      /* Enable speaker output. */
+
+      cxd56_audio_set_spout(true);
+
+      /* Power on Audio driver */
+
+      if (cxd56_audio_poweron() != 0)
+        {
+          return false;
+        }
+
+      /* Enable BaseBand driver output */
+
+      if (cxd56_audio_en_output() != 0)
+        {
+          return false;
+        }
+
+      /* Cancel output mute. */
+
+      board_external_amp_mute_control(false);
+    }
+    else
+    {
+      /* Set output mute. */
+
+      board_external_amp_mute_control(true);
+
+      /* Disable speaker output. */
+
+      cxd56_audio_set_spout(false);
+
+      /* Disable I2S pin. */
+
+      cxd56_audio_dis_i2s_io();
+
+      /* Power off Audio driver */
+
+      if (cxd56_audio_dis_output() != 0)
+        {
+          return false;
+        }
+
+      /* Disable BaseBand driver output */
+
+      if (cxd56_audio_poweroff() != 0)
+        {
+          return false;
+        }
+    }
+
+  return true;
+}
+
 /****************************************************************************
  * Name: board_aca_power_control
  *

boards/arm/cxd56xx/drivers/audio/cxd56_audio.c

@@ -1303,3 +1303,48 @@ uint32_t cxd56_audio_get_micmap(void)
 {
   return cxd56_audio_config_get_micmap();
 }
+
+bool board_audio_tone_generator(bool en, int16_t vol, uint16_t freq)
+{
+  if (!en)
+    {
+      /* Stop beep */
+
+      if (cxd56_audio_stop_beep() != 0)
+        {
+          return false;
+        }
+    }
+
+  if (0 != freq)
+    {
+      /* Set beep frequency parameter */
+
+      if (cxd56_audio_set_beep_freq(freq) != 0)
+        {
+          return false;
+        }
+    }
+
+  if (255 != vol)
+    {
+      /* Set beep volume parameter */
+
+      if (cxd56_audio_set_beep_vol(vol) != 0)
+        {
+          return false;
+        }
+    }
+
+  if (en)
+    {
+      /* Play beep */
+
+      if (cxd56_audio_play_beep() != 0)
+        {
+          return false;
+        }
+    }
+
+  return true;
+}

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

@@ -63,6 +63,17 @@ extern "C"
 #define EXTERN extern
 #endif
 
+/****************************************************************************
+ * Name: board_audio_power_control
+ *
+ * Description:
+ *   Power on/off the audio on the board.
+ *
+ ****************************************************************************/
+
+bool board_audio_power_control(bool en);
+
+
 /****************************************************************************
  * Name: board_aca_power_control
  *