Prevent the click of death when connecting an ipod to usb.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11622 a1c6a512-1295-4272-9138-f99709370657

firmware/drivers/ata.c

@@ -1215,6 +1215,15 @@ void ata_sleep(void)
     queue_post(&ata_queue, Q_SLEEP, NULL);
 }
 
+void ata_sleepnow(void)
+{
+    if (!spinup && !sleeping && !ata_mtx.locked)
+    {
+        call_ata_idle_notifys(false);
+        ata_perform_sleep();
+    }
+}
+
 void ata_spin(void)
 {
     last_user_activity = current_tick;
@@ -1288,7 +1297,6 @@ static void ata_thread(void)
                 call_ata_idle_notifys(false);
                 last_disk_activity = current_tick - sleep_timeout + (HZ/2);
                 break;
-                
         }
     }
 }

firmware/export/ata.h

@@ -40,6 +40,7 @@ extern void ata_enable(bool on);
 extern void ata_spindown(int seconds);
 extern void ata_poweroff(bool enable);
 extern void ata_sleep(void);
+extern void ata_sleepnow(void);
 extern bool ata_disk_is_active(void);
 extern int ata_hard_reset(void);
 extern int ata_soft_reset(void);

firmware/target/arm/ipod/usb-ipod.c

@@ -94,6 +94,9 @@ void usb_enable(bool on)
 #elif defined(IPOD_NANO) || defined(IPOD_VIDEO) || defined(IPOD_MINI2G)
         unsigned char* storage_ptr = (unsigned char *)0x4001FF00;
 #endif
+        
+        ata_sleepnow(); /* Immediately spindown the disk. */
+        sleep(HZ*2);
         memcpy(storage_ptr, "diskmode\0\0hotstuff\0\0\1", 21);
         DEV_RS |= 4; /* Reboot */
     }