sound: tegra: Add a sound driver

[oweals/u-boot.git] / drivers / sound / sound.c

diff --git a/drivers/sound/sound.c b/drivers/sound/sound.c
index 4f0ad0d8f0d706f4bd0881e878341f37a388f414..dd3f9db4f7547da4b45491eb44e8dd906062e504 100644 (file)
--- a/drivers/sound/sound.c
+++ b/drivers/sound/sound.c
@@ -8,7 +8,7 @@
 #include <sound.h>
 
 void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
-                             uint freq)
+                             uint freq, uint channels)
 {
        const unsigned short amplitude = 16000; /* between 1 and 32767 */
        const int period = freq ? sample_rate / freq : 0;
@@ -21,14 +21,17 @@ void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
                size--;
 
        while (size) {
-               int i;
+               int i, j;
+
                for (i = 0; size && i < half; i++) {
                        size -= 2;
-                       *data++ = amplitude;
+                       for (j = 0; j < channels; j++)
+                               *data++ = amplitude;
                }
                for (i = 0; size && i < period - half; i++) {
                        size -= 2;
-                       *data++ = -amplitude;
+                       for (j = 0; j < channels; j++)
+                               *data++ = -amplitude;
                }
        }
 }