Diff: Drivers/BSP/Components/wm8994/wm8994.c

Revision:

4:72a949940ad6

Parent:

0:c0f3bbab73d2

Child:

5:60b59d223214

--- a/Drivers/BSP/Components/wm8994/wm8994.c	Thu Jul 06 16:48:52 2017 +0200
+++ b/Drivers/BSP/Components/wm8994/wm8994.c	Fri Nov 15 11:20:11 2019 +0100
@@ -2,9 +2,7 @@
   ******************************************************************************
   * @file    wm8994.c
   * @author  MCD Application Team
-  * @version V2.1.0
-  * @date    22-February-2016
-  * @brief   This file provides the WM8994 Audio Codec driver.   
+  * @brief   This file provides the WM8994 Audio Codec driver.
   ******************************************************************************
   * @attention
   *
@@ -106,6 +104,8 @@
 
 static uint32_t outputEnabled = 0;
 static uint32_t inputEnabled = 0;
+static uint8_t ColdStartup = 1;
+
 /**
   * @}
   */ 
@@ -118,6 +118,7 @@
   * @}
   */ 
 
+
 /** @defgroup WM8994_Private_Functions
   * @{
   */ 
@@ -146,10 +147,10 @@
   counter += CODEC_IO_Write(DeviceAddr, 0x102, 0x0003);
   counter += CODEC_IO_Write(DeviceAddr, 0x817, 0x0000);
   counter += CODEC_IO_Write(DeviceAddr, 0x102, 0x0000);
-  
+
   /* Enable VMID soft start (fast), Start-up Bias Current Enabled */
   counter += CODEC_IO_Write(DeviceAddr, 0x39, 0x006C);
-  
+
     /* Enable bias generator, Enable VMID */
   if (input_device > 0)
   {
@@ -167,6 +168,7 @@
   if (output_device > 0)
   {
     outputEnabled = 1;
+
     switch (output_device)
     {
     case OUTPUT_DEVICE_SPEAKER:
@@ -465,6 +467,33 @@
 
   if (output_device > 0)  /* Audio output selected */
   {
+    if (output_device == OUTPUT_DEVICE_HEADPHONE)
+    {      
+      /* Select DAC1 (Left) to Left Headphone Output PGA (HPOUT1LVOL) path */
+      counter += CODEC_IO_Write(DeviceAddr, 0x2D, 0x0100);
+      
+      /* Select DAC1 (Right) to Right Headphone Output PGA (HPOUT1RVOL) path */
+      counter += CODEC_IO_Write(DeviceAddr, 0x2E, 0x0100);    
+            
+      /* Startup sequence for Headphone */
+      if(ColdStartup)
+      {
+        counter += CODEC_IO_Write(DeviceAddr,0x110,0x8100);
+        
+        ColdStartup=0;
+        /* Add Delay */
+        AUDIO_IO_Delay(300);
+      }
+      else /* Headphone Warm Start-Up */
+      { 
+        counter += CODEC_IO_Write(DeviceAddr,0x110,0x8108);
+        /* Add Delay */
+        AUDIO_IO_Delay(50);
+      }
+
+      /* Soft un-Mute the AIF1 Timeslot 0 DAC1 path L&R */
+      counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0000);
+    }
     /* Analog Output Configuration */
 
     /* Enable SPKRVOL PGA, Enable SPKMIXR, Enable SPKLVOL PGA, Enable SPKMIXL */
@@ -524,7 +553,7 @@
     counter += CODEC_IO_Write(DeviceAddr, 0x54, 0x0033);
 
     /* Add Delay */
-    AUDIO_IO_Delay(250);
+    AUDIO_IO_Delay(257);
 
     /* Enable HPOUT1 (Left) and HPOUT1 (Right) intermediate and output stages. Remove clamps */
     counter += CODEC_IO_Write(DeviceAddr, 0x60, 0x00EE);
@@ -538,7 +567,7 @@
     counter += CODEC_IO_Write(DeviceAddr, 0x611, 0x00C0);
 
     /* Unmute the AIF1 Timeslot 0 DAC path */
-    counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0000);
+    counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0010);
 
     /* Unmute DAC 2 (Left) */
     counter += CODEC_IO_Write(DeviceAddr, 0x612, 0x00C0);
@@ -547,7 +576,7 @@
     counter += CODEC_IO_Write(DeviceAddr, 0x613, 0x00C0);
 
     /* Unmute the AIF1 Timeslot 1 DAC2 path */
-    counter += CODEC_IO_Write(DeviceAddr, 0x422, 0x0000);
+    counter += CODEC_IO_Write(DeviceAddr, 0x422, 0x0010);
     
     /* Volume Control */
     wm8994_SetVolume(DeviceAddr, Volume);
@@ -701,7 +730,7 @@
 
     if (CodecPdwnMode == CODEC_PDWN_SW)
     {
-       /* Only output mute required*/
+      /* Only output mute required*/
     }
     else /* CODEC_PDWN_HW */
     {
@@ -830,10 +859,10 @@
     else /* AUDIO_MUTE_OFF Disable the Mute */
     {
       /* Unmute the AIF1 Timeslot 0 DAC1 path L&R */
-      counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0000);
+      counter += CODEC_IO_Write(DeviceAddr, 0x420, 0x0010);
 
       /* Unmute the AIF1 Timeslot 1 DAC2 path L&R */
-      counter += CODEC_IO_Write(DeviceAddr, 0x422, 0x0000);
+      counter += CODEC_IO_Write(DeviceAddr, 0x422, 0x0010);
     }
   }
   return counter;
@@ -950,6 +979,11 @@
     /* AIF1 Sample Rate = 16 (KHz), ratio=256 */ 
     counter += CODEC_IO_Write(DeviceAddr, 0x210, 0x0033);
     break;
+
+  case  AUDIO_FREQUENCY_32K:
+    /* AIF1 Sample Rate = 32 (KHz), ratio=256 */ 
+    counter += CODEC_IO_Write(DeviceAddr, 0x210, 0x0063);
+    break;
     
   case  AUDIO_FREQUENCY_48K:
     /* AIF1 Sample Rate = 48 (KHz), ratio=256 */