This patch tries to add code to actually power up the bluetooth chip (bcm2035) once
BTUART is opened from userspace.  Unfortunately it doesn't really work yet.

Index: linux-2.6.16.13-ezx3/arch/arm/mach-pxa/ezx.c
===================================================================
--- linux-2.6.16.13-ezx3.orig/arch/arm/mach-pxa/ezx.c	2006-05-12 00:24:20.000000000 +0200
+++ linux-2.6.16.13-ezx3/arch/arm/mach-pxa/ezx.c	2006-05-12 01:23:41.000000000 +0200
@@ -58,6 +58,26 @@
 extern void usb_send_readurb(void);
 extern void pm_do_poweroff(void);
 
+/* Bluetooth stuff */
+void ezx_bt_wakeup(int on)
+{
+	printk(KERN_NOTICE "switching BT wakeup %d\n", on);
+	if (on)
+		set_GPIO(GPIO_BT_WAKEUP);
+	else
+		clr_GPIO(GPIO_BT_WAKEUP);
+}
+EXPORT_SYMBOL(ezx_bt_wakeup);
+
+void ezx_bt_reset(int on)
+{
+	printk(KERN_NOTICE "switching BT reset %d\n", on);
+	if (on)
+		set_GPIO(GPIO_BT_RESET);
+	else
+		clr_GPIO(GPIO_BT_RESET);
+}
+EXPORT_SYMBOL(ezx_bt_reset);
 
 /* check power down condition */
 inline void check_power_off(void)
Index: linux-2.6.16.13-ezx3/drivers/serial/pxa.c
===================================================================
--- linux-2.6.16.13-ezx3.orig/drivers/serial/pxa.c	2006-05-12 00:21:45.000000000 +0200
+++ linux-2.6.16.13-ezx3/drivers/serial/pxa.c	2006-05-12 01:24:06.000000000 +0200
@@ -417,6 +417,14 @@
 	(void) serial_in(up, UART_IIR);
 	(void) serial_in(up, UART_MSR);
 
+#ifdef CONFIG_PXA_EZX
+	if (port->line == 1) {
+		ezx_bt_reset(0);
+		ezx_bt_wakeup(0);
+		ezx_bt_reset(1);
+	}
+#endif
+
 	return 0;
 }
 
@@ -446,6 +454,11 @@
 				  UART_FCR_CLEAR_RCVR |
 				  UART_FCR_CLEAR_XMIT);
 	serial_out(up, UART_FCR, 0);
+
+#ifdef CONFIG_PXA_EZX
+	if (port->line == 1)
+		ezx_bt_wakeup(1);
+#endif
 }
 
 static void