ar71xx: add driver for the USB LED on the WNDR3700

[openwrt/svn-archive/archive.git] / target / linux / ar71xx / files / drivers / leds / leds-wndr3700-usb.c

diff --git a/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c b/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c
new file mode 100644 (file)
index 0000000..9f17861
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c
@@ -0,0 +1,75 @@
+/*
+ *  USB LED driver for the NETGEAR WNDR3700
+ *
+ *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ar71xx/ar71xx.h>
+
+#define DRIVER_NAME    "wndr3700-led-usb"
+
+static void wndr3700_usb_led_set(struct led_classdev *cdev,
+                                enum led_brightness brightness)
+{
+       if (brightness)
+               ar71xx_device_start(RESET_MODULE_GE1_PHY);
+       else
+               ar71xx_device_stop(RESET_MODULE_GE1_PHY);
+}
+
+static enum led_brightness wndr3700_usb_led_get(struct led_classdev *cdev)
+{
+       return ar71xx_device_stopped(RESET_MODULE_GE1_PHY) ? LED_OFF : LED_FULL;
+}
+
+static struct led_classdev wndr3700_usb_led = {
+       .name = "wndr3700:green:usb",
+       .brightness_set = wndr3700_usb_led_set,
+       .brightness_get = wndr3700_usb_led_get,
+};
+
+static int __devinit wndr3700_usb_led_probe(struct platform_device *pdev)
+{
+       return led_classdev_register(&pdev->dev, &wndr3700_usb_led);
+}
+
+static int __devexit wndr3700_usb_led_remove(struct platform_device *pdev)
+{
+       led_classdev_unregister(&wndr3700_usb_led);
+       return 0;
+}
+
+static struct platform_driver wndr3700_usb_led_driver = {
+       .probe = wndr3700_usb_led_probe,
+       .remove = __devexit_p(wndr3700_usb_led_remove),
+       .driver = {
+               .name = DRIVER_NAME,
+               .owner = THIS_MODULE,
+       },
+};
+
+static int __init wndr3700_usb_led_init(void)
+{
+       return platform_driver_register(&wndr3700_usb_led_driver);
+}
+
+static void __exit wndr3700_usb_led_exit(void)
+{
+       platform_driver_unregister(&wndr3700_usb_led_driver);
+}
+
+module_init(wndr3700_usb_led_init);
+module_exit(wndr3700_usb_led_exit);
+
+MODULE_DESCRIPTION("USB LED driver for the NETGEAR WNDR3700");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);