NEW_LEDS support for the LinkSys NSLU2

Signed-off-by: John Bowler <jbowler@acm.org>

--- linux-2.6.15/arch/arm/mach-ixp4xx/nslu2-setup.c	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.15/arch/arm/mach-ixp4xx/nslu2-setup.c	1970-01-01 00:00:00.000000000 +0000
@@ -17,6 +17,7 @@
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
 #include <linux/mtd/mtd.h>
+#include <linux/leds.h>
 
 #include <asm/setup.h>
 #include <asm/memory.h>
@@ -50,6 +51,48 @@ static struct ixp4xx_i2c_pins nslu2_i2c_
 	.scl_pin		= NSLU2_SCL_PIN,
 };
 
+#ifdef CONFIG_LEDS_CLASS
+static struct resource nslu2_led_resources[] = {
+	{
+		.name		= "ready",  /* green led */
+		.start		= NSLU2_LED_GRN,
+		.end		= NSLU2_LED_GRN,
+		.flags		= IXP4XX_GPIO_HIGH,
+	},
+	{
+		.name		= "status", /* red led */
+		.start		= NSLU2_LED_RED,
+		.end		= NSLU2_LED_RED,
+		.flags		= IXP4XX_GPIO_HIGH,
+	},
+	{
+		.name		= "disk-1",
+		.start		= NSLU2_LED_DISK1,
+		.end		= NSLU2_LED_DISK1,
+		.flags		= IXP4XX_GPIO_LOW,
+	},
+	{
+		.name		= "disk-2",
+		.start		= NSLU2_LED_DISK2,
+		.end		= NSLU2_LED_DISK2,
+		.flags		= IXP4XX_GPIO_LOW,
+	},
+	{
+		.name		= "buzzer",
+		.start		= NSLU2_GPIO_BUZZ,
+		.end		= NSLU2_GPIO_BUZZ,
+		.flags		= IXP4XX_GPIO_LOW,
+	},
+};
+
+static struct platform_device nslu2_leds = {
+	.name			= "IXP4XX-GPIO-LED",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(nslu2_led_resources),
+	.resource		= nslu2_led_resources,
+};
+#endif
+
 static struct platform_device nslu2_i2c_controller = {
 	.name			= "IXP4XX-I2C",
 	.id			= 0,
@@ -103,7 +146,6 @@ static struct platform_device nslu2_uart
 static struct platform_device *nslu2_devices[] __initdata = {
 	&nslu2_i2c_controller,
 	&nslu2_flash,
-	&nslu2_uart,
 };
 
 static void nslu2_power_off(void)
@@ -164,7 +206,18 @@ static void __init nslu2_init(void)
 
 	pm_power_off = nslu2_power_off;
 
+	/* This is only useful on a modified machine, but it is valuable
+	 * to have it first in order to see debug messages, and so that
+	 * it does *not* get removed if platform_add_devices fails!
+	 */
+	(void)platform_device_register(&nslu2_uart);
+
 	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
+
+#ifdef CONFIG_LEDS_CLASS
+	/* We don't care whether or not this works. */
+	(void)platform_device_register(&nslu2_leds);
+#endif
 }
 
 /*