Commit FS#8624 by Linus Nielsen, Ryan Press, Craig Elliott, and Kenderes Tamas. Adds preliminary support for numerous accessories that use the ipod serial port on the dock connector. See IpodAccessories for a list of tested devices.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19585 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/ipod/button-clickwheel.c

@@ -316,7 +316,11 @@ int button_read_device(void)
     }
 
     /* The int_btn variable is set in the button interrupt handler */
+#ifdef IPOD_ACCESSORY_PROTOCOL
+    return int_btn | remote_control_rx();
+#else
     return int_btn;
+#endif
 }
 
 bool button_hold(void)

firmware/target/arm/ipod/button-target.h

@@ -50,7 +50,22 @@ void ipod_4g_button_int(void);
                 |BUTTON_LEFT|BUTTON_RIGHT|BUTTON_SCROLL_FWD\
                 |BUTTON_SCROLL_BACK|BUTTON_PLAY)
 
+    /* Remote control's buttons */
+#ifdef IPOD_ACCESSORY_PROTOCOL
+#define BUTTON_RC_PLAY      0x00100000
+#define BUTTON_RC_STOP      0x00080000
+
+#define BUTTON_RC_LEFT      0x00040000
+#define BUTTON_RC_RIGHT     0x00020000
+#define BUTTON_RC_VOL_UP    0x00010000
+#define BUTTON_RC_VOL_DOWN  0x00008000
+
+#define BUTTON_REMOTE (BUTTON_RC_PLAY|BUTTON_RC_STOP\
+                |BUTTON_RC_LEFT|BUTTON_RC_RIGHT\
+                |BUTTON_RC_VOL_UP|BUTTON_RC_VOL_DOWN)
+#else
 #define BUTTON_REMOTE 0
+#endif
 
 /* This is for later
 #define  BUTTON_SCROLL_TOUCH 0x00000200

firmware/target/arm/system-pp502x.c

@@ -32,6 +32,7 @@
 #ifndef BOOTLOADER
 extern void TIMER1(void);
 extern void TIMER2(void);
+extern void SERIAL0(void);
 extern void ipod_mini_button_int(void); /* iPod Mini 1st gen only */
 extern void ipod_4g_button_int(void);   /* iPod 4th gen and higher only */
 
@@ -78,6 +79,11 @@ void irq(void)
                 button_int();
         }        
 #endif
+#ifdef IPOD_ACCESSORY_PROTOCOL
+	else if (CPU_HI_INT_STAT & SER0_MASK) {
+	    SERIAL0();
+	}
+#endif
 #ifdef HAVE_USBSTACK
         else if (CPU_INT_STAT & USB_MASK) {
             usb_drv_int();