EP93xx leds driver

Signed-off-by: Petr Stetiar <ynezz@true.cz>

Index: linux-2.6.23-rc5/arch/arm/mach-ep93xx/core.c
===================================================================
--- linux-2.6.23-rc5.orig/arch/arm/mach-ep93xx/core.c	2007-09-04 02:40:19.000000000 +0200
+++ linux-2.6.23-rc5/arch/arm/mach-ep93xx/core.c	2007-09-04 02:40:25.000000000 +0200
@@ -568,6 +568,12 @@
 }
 
 
+static struct platform_device ep93xx_led_device = {
+	.name			= "ep93xx-led",
+	.id			= -1,
+};
+
+
 void __init ep93xx_init_devices(void)
 {
 	unsigned int v;
@@ -596,4 +602,5 @@
 	platform_device_register(&ep93xx_rtc_device);
 	platform_device_register(&ep93xx_ohci_device);
 	platform_device_register(&ep93xx_i2c_device);
+	platform_device_register(&ep93xx_led_device);
 }
Index: linux-2.6.23-rc5/drivers/leds/Kconfig
===================================================================
--- linux-2.6.23-rc5.orig/drivers/leds/Kconfig	2007-09-04 02:40:19.000000000 +0200
+++ linux-2.6.23-rc5/drivers/leds/Kconfig	2007-09-04 02:40:25.000000000 +0200
@@ -101,6 +101,12 @@
 	  outputs. To be useful the particular board must have LEDs
 	  and they must be connected to the GPIO lines.
 
+config LEDS_EP93XX
+	tristate "LED Support for Cirrus Logic EP93xx"
+	depends on LEDS_CLASS && ARCH_EP93XX
+	help
+	  This option enables support for the Cirrus Logic EP93xx based boards.
+
 comment "LED Triggers"
 
 config LEDS_TRIGGERS
Index: linux-2.6.23-rc5/drivers/leds/Makefile
===================================================================
--- linux-2.6.23-rc5.orig/drivers/leds/Makefile	2007-09-04 02:40:19.000000000 +0200
+++ linux-2.6.23-rc5/drivers/leds/Makefile	2007-09-04 02:40:25.000000000 +0200
@@ -16,6 +16,7 @@
 obj-$(CONFIG_LEDS_WRAP)			+= leds-wrap.o
 obj-$(CONFIG_LEDS_H1940)		+= leds-h1940.o
 obj-$(CONFIG_LEDS_COBALT)		+= leds-cobalt.o
+obj-$(CONFIG_LEDS_EP93XX)		+= leds-ep93xx.o
 obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
 
 # LED Triggers
Index: linux-2.6.23-rc5/drivers/leds/leds-ep93xx.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23-rc5/drivers/leds/leds-ep93xx.c	2007-09-04 02:40:25.000000000 +0200
@@ -0,0 +1,119 @@
+/*
+ * LEDs driver for Cirrus Logic EP93xx
+ *
+ * Author: Petr Stetiar <ynezz@true.cz>
+ *
+ * Based on leds-corgi.c by Richard Purdie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/mach-types.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+
+static void ep93xx_green_led_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	if (value)
+		gpio_line_set(EP93XX_GPIO_LINE_GRLED, EP93XX_GPIO_HIGH);
+	else
+		gpio_line_set(EP93XX_GPIO_LINE_GRLED, EP93XX_GPIO_LOW);
+}
+
+static void ep93xx_red_led_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	if (value)
+		gpio_line_set(EP93XX_GPIO_LINE_RDLED, EP93XX_GPIO_HIGH);
+	else
+		gpio_line_set(EP93XX_GPIO_LINE_RDLED, EP93XX_GPIO_LOW);
+}
+
+
+static struct led_classdev ep93xx_green_led = {
+	.name			= "ep93xx:green",
+	.default_trigger	= "none",
+	.brightness_set		= ep93xx_green_led_set,
+};
+
+static struct led_classdev ep93xx_red_led = {
+	.name			= "ep93xx:red",
+	.default_trigger	= "heartbeat",
+	.brightness_set		= ep93xx_red_led_set,
+};
+
+#ifdef CONFIG_PM
+static int ep93xx_led_suspend(struct platform_device *dev, pm_message_t state)
+{
+	led_classdev_suspend(&ep93xx_green_led);
+	led_classdev_suspend(&ep93xx_red_led);
+	return 0;
+}
+
+static int ep93xx_led_resume(struct platform_device *dev)
+{
+	led_classdev_resume(&ep93xx_red_led);
+	led_classdev_resume(&ep93xx_green_led);
+	return 0;
+}
+#endif
+
+static int ep93xx_led_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	gpio_line_config(EP93XX_GPIO_LINE_GRLED, GPIO_OUT);
+	gpio_line_config(EP93XX_GPIO_LINE_RDLED, GPIO_OUT);
+
+	ret = led_classdev_register(&pdev->dev, &ep93xx_green_led);
+	if (ret < 0)
+		return ret;
+
+	ret = led_classdev_register(&pdev->dev, &ep93xx_red_led);
+	if (ret < 0)
+		led_classdev_unregister(&ep93xx_green_led);
+
+	return ret;
+}
+
+static int ep93xx_led_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&ep93xx_green_led);
+	led_classdev_unregister(&ep93xx_red_led);
+	return 0;
+}
+
+static struct platform_driver ep93xx_led_driver = {
+	.probe		= ep93xx_led_probe,
+	.remove		= ep93xx_led_remove,
+#ifdef CONFIG_PM
+	.suspend	= ep93xx_led_suspend,
+	.resume		= ep93xx_led_resume,
+#endif
+	.driver		= {
+		.name		= "ep93xx-led",
+	},
+};
+
+static int __init ep93xx_led_init(void)
+{
+	return platform_driver_register(&ep93xx_led_driver);
+}
+
+static void __exit ep93xx_led_exit(void)
+{
+ 	platform_driver_unregister(&ep93xx_led_driver);
+}
+
+module_init(ep93xx_led_init);
+module_exit(ep93xx_led_exit);
+
+MODULE_AUTHOR("Petr Stetiar <ynezz@true.cz>");
+MODULE_DESCRIPTION("Cirrus Logic EP93xx LED driver");
+MODULE_LICENSE("GPL");