Straighten out the mad twisted state of sound.c and related areas.

This is going right in since it's long overdue. If anything is goofed,
drop me a line or just tweak it yourself if you know what's wrong. :-)

Make HW/SW codec interface more uniform when emulating HW functionality
on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to-
DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX"
APIs are all in sound.c with none in DSP code any longer.

Reduce number of settings definitions needed by each codec by providing
defaults for common ones like balance, channels and SW tone controls.

Remove need for separate SIM code and tables and add virtual codec header
for hosted targets.

Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b

1 files changed, 18 insertions, 37 deletions

diff --git a/firmware/drivers/audio/wm8731.c b/firmware/drivers/audio/wm8731.c
index 71050454f3..3689a28f31 100644
--- a/firmware/drivers/audio/wm8731.c
+++ b/firmware/drivers/audio/wm8731.c
@@ -37,22 +37,6 @@
 #include "wmcodec.h"
 #include "sound.h"
 
-
-const struct sound_settings_info audiohw_settings[] = {
-    [SOUND_VOLUME]        = {"dB", 0,  1, -74,   6, -25},
-    /* HAVE_SW_TONE_CONTROLS */
-    [SOUND_BASS]          = {"dB", 0,  1, -24,  24,   0},
-    [SOUND_TREBLE]        = {"dB", 0,  1, -24,  24,   0},
-    [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},
-    [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},
-    [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},
-#if defined(HAVE_WM8731) && defined(HAVE_RECORDING)
-    [SOUND_LEFT_GAIN]     = {"dB", 1,  1,   0,  31,  23},
-    [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,   0,  31,  23},
-    [SOUND_MIC_GAIN]      = {"dB", 1,  1,   0,   1,   0},
-#endif
-};
-
 /* Init values/shadows
  * Ignore bit 8 since that only specifies "both" for updating
  * gains - "RESET" (15h) not included */
@@ -109,22 +93,6 @@ static void wmc_write_masked(int reg, unsigned bits, unsigned mask)
     wmc_write(reg, (wmc_regs[reg] & ~mask) | (bits & mask));
 }
 
-/* convert tenth of dB volume (-730..60) to master volume register value */
-int tenthdb2master(int db)
-{
-    /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
-    /* 1111111 == +6dB  (0x7f) */
-    /* 1111001 == 0dB   (0x79) */
-    /* 0110000 == -73dB (0x30 */
-    /* 0101111 == mute  (0x2f) */
-
-    if (db < VOLUME_MIN) {
-        return 0x2f;
-    } else {
-        return((db/10)+0x30+73);
-    }
-}
-
 int sound_val2phys(int setting, int value)
 {
     int result;
@@ -148,6 +116,21 @@ int sound_val2phys(int setting, int value)
     return result;
 }
 
+/* convert tenth of dB volume (-730..60) to master volume register value */
+static int vol_tenthdb2hw(int db)
+{
+    /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
+    /* 1111111 ==  +6dB (0x7f) */
+    /* 1111001 ==   0dB (0x79) */
+    /* 0110000 == -73dB (0x30) */
+    /* 0101111 ==  mute (0x2f) */
+    if (db < VOLUME_MIN) {
+        return 0x2f;
+    } else {
+        return((db/10)+0x30+73);
+    }
+}
+
 static void audiohw_mute(bool mute)
 {
     if (mute) {
@@ -207,13 +190,11 @@ void audiohw_postinit(void)
 #endif
 }
 
-void audiohw_set_master_vol(int vol_l, int vol_r)
+void audiohw_set_volume(int vol_l, int vol_r)
 {
     /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
-    /* 1111111 == +6dB */
-    /* 1111001 == 0dB */
-    /* 0110000 == -73dB */
-    /* 0101111 == mute (0x2f) */
+    vol_l = vol_tenthdb2hw(vol_l);
+    vol_r = vol_tenthdb2hw(vol_r);
     wmc_write_masked(LOUTVOL, vol_l, WMC_OUT_VOL_MASK);
     wmc_write_masked(ROUTVOL, vol_r, WMC_OUT_VOL_MASK);
 }