M:Robe 500: Initialize the buzzer and move it out of the LCD code.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24001 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/tms320dm320/mrobe-500/lcd-mr500.c

@@ -141,7 +141,6 @@ void lcd_init_device(void)
     
     /* LCD related pins:
      *  32 - LED above LCD
-     *  33 - ??
      *  34 - R2 for 18 bit output
      *  35 - Resolution (MO?)
      *  36 - LCD power (INI?)
@@ -154,10 +153,6 @@ void lcd_init_device(void)
     dm320_set_io(32, false, false, false, false, false, 0x00);
     IO_GIO_BITCLR2 = 1; /* Turn the LED off */
     
-    /*  33: output, non-inverted, no-irq, falling edge, no-chat, normal */
-    dm320_set_io(33, false, false, false, false, false, 0x00);
-    /* To-do: figure out value from OF */
-    
     /*  34: output, non-inverted, no-irq, falling edge, no-chat, R2 */
     dm320_set_io(34, false, false, false, false, false, 0x02);
     

firmware/target/arm/tms320dm320/system-dm320.c

@@ -199,6 +199,16 @@ void system_exception_wait(void)
 
 void system_init(void)
 {
+    /* Pin 33 is connected to a buzzer, for an annoying sound set 
+     *  PWM0C == 0x3264
+     *  PWM0H == 0x1932
+     *  Function to 1
+     *  Since this is not used in the FW, set it to a normal output at a zero
+     *  level. */
+    /*  33: output, non-inverted, no-irq, falling edge, no-chat, normal */
+    dm320_set_io(33, false, false, false, false, false, 0x00);
+    IO_GIO_BITCLR2      = 1<<1;
+
     /* taken from linux/arch/arm/mach-itdm320-20/irq.c */
 
     /* Clearing all FIQs and IRQs. */