Added left/right/deemphasis functionality of dac_volume

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1227 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 9 insertions, 6 deletions

diff --git a/firmware/drivers/dac.c b/firmware/drivers/dac.c
index 0c12a8d912..9a40244292 100644
--- a/firmware/drivers/dac.c
+++ b/firmware/drivers/dac.c
@@ -16,23 +16,26 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
+#include "stdbool.h"
 #include "i2c.h"
 #include "debug.h"
 #include "dac.h"
 
-int dac_volume(unsigned int volume)
+int dac_volume(unsigned int left, unsigned int right, bool deemph)
 {
     int ret = 0;
     unsigned char buf[3];
 
     i2c_begin();
 
-    if(volume > 0x38)
-        volume = 0x38;
+    if (left > 0x38)
+        left = 0x38;
+    if (right > 0x38)
+        right = 0x38;
 
     buf[0] = DAC_REG_WRITE | DAC_AVOL;
-    buf[1] = (volume & 0x3f) | 0x40; /* Deemphasis ON */
-    buf[2] = volume & 0x3f;
+    buf[1] = (left & 0x3f) | (deemph ? 0x40 : 0);
+    buf[2] = right & 0x3f;
 
     /* send read command */
     if (i2c_write(DAC_DEV_WRITE,buf,3))
diff --git a/firmware/drivers/dac.h b/firmware/drivers/dac.h
index c860538a24..9530677bec 100644
--- a/firmware/drivers/dac.h
+++ b/firmware/drivers/dac.h
@@ -32,7 +32,7 @@
 #define DAC_AVOL        2
 #define DAC_GCFG        3
 
-extern int dac_volume(unsigned int volume);
+extern int dac_volume(unsigned int left, unsigned int right, bool deemph);
 extern int dac_config(int value);
 
 #endif