Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / leds / leds-rb532.c

diff --git a/kernel/drivers/leds/leds-rb532.c b/kernel/drivers/leds/leds-rb532.c
new file mode 100644 (file)
index 0000000..fcd1215
--- /dev/null
+++ b/kernel/drivers/leds/leds-rb532.c
@@ -0,0 +1,64 @@
+/*
+ * LEDs driver for the "User LED" on Routerboard532
+ *
+ * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>
+ *
+ * Based on leds-cobalt-qube.c by Florian Fainelly and
+ * rb-diag.c (my own standalone driver for both LED and
+ * button of Routerboard532).
+ */
+
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-rc32434/gpio.h>
+#include <asm/mach-rc32434/rb.h>
+
+static void rb532_led_set(struct led_classdev *cdev,
+                         enum led_brightness brightness)
+{
+       if (brightness)
+               set_latch_u5(LO_ULED, 0);
+
+       else
+               set_latch_u5(0, LO_ULED);
+}
+
+static enum led_brightness rb532_led_get(struct led_classdev *cdev)
+{
+       return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
+}
+
+static struct led_classdev rb532_uled = {
+       .name = "uled",
+       .brightness_set = rb532_led_set,
+       .brightness_get = rb532_led_get,
+       .default_trigger = "nand-disk",
+};
+
+static int rb532_led_probe(struct platform_device *pdev)
+{
+       return led_classdev_register(&pdev->dev, &rb532_uled);
+}
+
+static int rb532_led_remove(struct platform_device *pdev)
+{
+       led_classdev_unregister(&rb532_uled);
+       return 0;
+}
+
+static struct platform_driver rb532_led_driver = {
+       .probe = rb532_led_probe,
+       .remove = rb532_led_remove,
+       .driver = {
+               .name = "rb532-led",
+       },
+};
+
+module_platform_driver(rb532_led_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("User LED support for Routerboard532");
+MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
+MODULE_ALIAS("platform:rb532-led");