Index: linux-2.6.16/arch/arm/mach-ep93xx/core.c
===================================================================
--- linux-2.6.16.orig/arch/arm/mach-ep93xx/core.c
+++ linux-2.6.16/arch/arm/mach-ep93xx/core.c
@@ -478,6 +478,46 @@ static struct platform_device ep93xx_rtc
 };
 
 
+
+static struct timer_list blink_timer;
+static int led_state;
+
+static void do_blink(unsigned long ignored)
+{
+	int i;
+
+	blink_timer.expires = jiffies + HZ;
+	add_timer(&blink_timer);
+
+	led_state ^= 1;
+
+	for (i = 0; i < 8; i++) {
+		gpio_line_set(EP93XX_GPIO_LINE_A(i), led_state);
+		gpio_line_set(EP93XX_GPIO_LINE_B(i), led_state);
+	}
+
+	gpio_line_set(EP93XX_GPIO_LINE_GRLED, led_state);
+	gpio_line_set(EP93XX_GPIO_LINE_RDLED, led_state ^ 1);
+
+	gpio_line_set(EP93XX_GPIO_LINE_F(1), led_state);
+
+	gpio_line_set(EP93XX_GPIO_LINE_H(3), led_state);
+	gpio_line_set(EP93XX_GPIO_LINE_H(4), led_state);
+	gpio_line_set(EP93XX_GPIO_LINE_H(5), led_state);
+}
+
+static irqreturn_t test_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	static long last = 0;
+
+	if (jiffies - last > HZ) {
+		printk("got interrupt\n");
+		last = jiffies;
+	}
+
+	return IRQ_HANDLED;
+}
+
 void __init ep93xx_init_devices(void)
 {
 	unsigned int v;
@@ -497,4 +537,56 @@ void __init ep93xx_init_devices(void)
 	platform_device_register(&ep93xx_ohci_device);
 	platform_device_register(&ep93xx_i2c_device);
 	platform_device_register(&ep93xx_rtc_device);
+
+	if (0) {
+		int i;
+
+		led_state = 0;
+
+		for (i = 0; i < 8; i++) {
+			gpio_line_config(EP93XX_GPIO_LINE_A(i), GPIO_OUT);
+			gpio_line_config(EP93XX_GPIO_LINE_B(i), GPIO_OUT);
+		}
+
+		gpio_line_config(EP93XX_GPIO_LINE_F(1), GPIO_OUT);
+
+		gpio_line_config(EP93XX_GPIO_LINE_H(3), GPIO_OUT);
+		gpio_line_config(EP93XX_GPIO_LINE_H(4), GPIO_OUT);
+		gpio_line_config(EP93XX_GPIO_LINE_H(5), GPIO_OUT);
+
+		init_timer(&blink_timer);
+		blink_timer.function = do_blink;
+		blink_timer.expires = jiffies + HZ;
+		add_timer(&blink_timer);
+	}
+
+	if (0) {
+		int i;
+
+		gpio_line_config(EP93XX_GPIO_LINE_C(0), GPIO_OUT);
+		gpio_line_set(EP93XX_GPIO_LINE_C(0), EP93XX_GPIO_HIGH);
+		for (i=0;i<1000000;i++) ;
+		printk("***** init %d\n",gpio_line_get(EP93XX_GPIO_LINE_C(0)));
+		gpio_line_set(EP93XX_GPIO_LINE_C(0), EP93XX_GPIO_LOW);
+		for (i=0;i<1000000;i++) ;
+		printk("***** init %d\n",gpio_line_get(EP93XX_GPIO_LINE_C(0)));
+
+		gpio_line_config(EP93XX_GPIO_LINE_C(1), GPIO_OUT);
+		gpio_line_set(EP93XX_GPIO_LINE_C(1), EP93XX_GPIO_HIGH);
+		for (i=0;i<1000000;i++) ;
+		printk("***** init %d\n",gpio_line_get(EP93XX_GPIO_LINE_C(1)));
+		gpio_line_set(EP93XX_GPIO_LINE_C(1), EP93XX_GPIO_LOW);
+		for (i=0;i<1000000;i++) ;
+		printk("***** init %d\n",gpio_line_get(EP93XX_GPIO_LINE_C(1)));
+	}
+
+	if (0) {
+		int err;
+
+		err = request_irq(IRQ_EP93XX_GPIO(8), test_int_handler,
+					SA_INTERRUPT | SA_TRIGGER_LOW,
+					"test int", &err);
+
+		printk("error %d\n", err);
+	}
 }