Debug function to dump audio and PMU registers

---
 apps/debug_menu.c               |   20 ++++++++++++++++++++
 firmware/drivers/audio/as3514.c |    2 +-
 2 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index 828b881..a452f98 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -52,6 +52,7 @@
 #endif
 #include "lcd-remote.h"
 #include "crc32.h"
+#define LOGF_ENABLE
 #include "logf.h"
 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 #include "disk.h"
@@ -2318,6 +2319,22 @@ static bool dbg_pic(void)
 }
 #endif
 
+#ifdef HAVE_AS3543
+extern uint8_t as3514_regs[AS3514_NUM_AUDIO_REGS];
+#include "ascodec-target.h"
+static bool dbg_as3543(void)
+{
+    unsigned i, j;
+    for (i = 0; i < AS3514_NUM_AUDIO_REGS; i++)
+        logf("AS3514[%x] = %x", i, (unsigned)(as3514_regs[i]));
+
+    for (j = 0x17; j <= 0x1B; j++)
+        for (i = 0; i <= 7; i++)
+            logf("AS3514[%x,%x] = %x", j, i, ascodec_read_pmu(j,i));
+
+    return false;
+}
+#endif  /* HAVE_AS3543 */
 
 /****** The menu *********/
 struct the_menu_item {
@@ -2404,6 +2421,9 @@ static const struct the_menu_item menuitems[] = {
         { "View PIC info", dbg_pic },
 #endif
 #ifdef ROCKBOX_HAS_LOGF
+#ifdef HAVE_AS3543
+        { "Log AS3543 registers", dbg_as3543 },
+#endif  /* HAVE_AS3543 */
         {"Show Log File", logfdisplay },
         {"Dump Log File", logfdump },
 #endif
diff --git a/firmware/drivers/audio/as3514.c b/firmware/drivers/audio/as3514.c
index 1774932..3db95ab 100644
--- a/firmware/drivers/audio/as3514.c
+++ b/firmware/drivers/audio/as3514.c
@@ -79,7 +79,7 @@ const struct sound_settings_info audiohw_settings[] = {
 };
 
 /* Shadow registers */
-static uint8_t as3514_regs[AS3514_NUM_AUDIO_REGS]; /* 8-bit registers */
+/* static */ uint8_t as3514_regs[AS3514_NUM_AUDIO_REGS]; /* 8-bit registers */
 
 /*
  * little helper method to set register values.
-- 
1.7.1