commit a67cc22bf5d87f46c11bd53771554f2e851e24b2
Author: Bertrik Sikken <bertrik@sikken.nl>
Date:   Sun Jan 15 14:45:33 2012 +0100

    autofade restored from patch

diff --git a/firmware/drivers/audio/as3514.c b/firmware/drivers/audio/as3514.c
index 2260962..8289d8f 100644
--- a/firmware/drivers/audio/as3514.c
+++ b/firmware/drivers/audio/as3514.c
@@ -151,7 +151,10 @@ void audiohw_preinit(void)
 #ifdef HAVE_AS3543

     as3514_write(AS3514_AUDIOSET1, AUDIOSET1_DAC_on | AUDIOSET1_DAC_GAIN_on);
-    as3514_write(AS3514_AUDIOSET2, AUDIOSET2_AGC_off | AUDIOSET2_HPH_QUALITY_LOW_POWER);
+    as3514_write(AS3514_AUDIOSET2,
+                 AUDIOSET2_AGC_off |
+                 AUDIOSET2_HPH_QUALITY_LOW_POWER |
+                 AUDIOSET2_GAIN_STEP_OFF);
     /* common ground on, delay playback unmuting when inserting headphones */
     as3514_write(AS3514_AUDIOSET3, AUDIOSET3_HPCM_on | AUDIOSET3_HP_LONGSTART);

diff --git a/firmware/export/as3514.h b/firmware/export/as3514.h
index acf1344..7a9fe37 100644
--- a/firmware/export/as3514.h
+++ b/firmware/export/as3514.h
@@ -306,6 +306,11 @@ extern void audiohw_set_sampr_dividers(int fsel);
 #define AUDIOSET2_AGC_off       (0x1 << 5)
 #define AUDIOSET2_HPH_QUALITY_LOW_POWER (0x0 << 4)
 #define AUDIOSET2_HPH_QUALITY_HIGH      (0x1 << 4)
+#define AUDIOSET2_GAIN_STEP     (0x3 << 2)
+    #define AUDIOSET2_GAIN_STEP_2MS (0x0 << 2)
+    #define AUDIOSET2_GAIN_STEP_4MS (0x1 << 2)
+    #define AUDIOSET2_GAIN_STEP_8MS (0x2 << 2)
+    #define AUDIOSET2_GAIN_STEP_OFF (0x3 << 2)
 #else
 #define AUDIOSET2_BIAS_off      (0x1 << 7)
 #define AUDIOSET2_DITH_off      (0x1 << 6)