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Diffstat (limited to 'drivers/leds/leds-cobalt-qube.c')
-rw-r--r--drivers/leds/leds-cobalt-qube.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
new file mode 100644
index 0000000..d2b54b5
--- /dev/null
+++ b/drivers/leds/leds-cobalt-qube.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2006 - Florian Fainelli <florian@openwrt.org>
+ *
+ * Control the Cobalt Qube/RaQ front LED
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
+#define LED_FRONT_LEFT 0x01
+#define LED_FRONT_RIGHT 0x02
+
+static void __iomem *led_port;
+static u8 led_value;
+
+static void qube_front_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ if (brightness)
+ led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
+ else
+ led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT);
+ writeb(led_value, led_port);
+}
+
+static struct led_classdev qube_front_led = {
+ .name = "qube-front",
+ .brightness = LED_FULL,
+ .brightness_set = qube_front_led_set,
+ .default_trigger = "ide-disk",
+};
+
+static int __devinit cobalt_qube_led_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int retval;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EBUSY;
+
+ led_port = ioremap(res->start, res->end - res->start + 1);
+ if (!led_port)
+ return -ENOMEM;
+
+ led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
+ writeb(led_value, led_port);
+
+ retval = led_classdev_register(&pdev->dev, &qube_front_led);
+ if (retval)
+ goto err_iounmap;
+
+ return 0;
+
+err_iounmap:
+ iounmap(led_port);
+ led_port = NULL;
+
+ return retval;
+}
+
+static int __devexit cobalt_qube_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&qube_front_led);
+
+ if (led_port) {
+ iounmap(led_port);
+ led_port = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver cobalt_qube_led_driver = {
+ .probe = cobalt_qube_led_probe,
+ .remove = __devexit_p(cobalt_qube_led_remove),
+ .driver = {
+ .name = "cobalt-qube-leds",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init cobalt_qube_led_init(void)
+{
+ return platform_driver_register(&cobalt_qube_led_driver);
+}
+
+static void __exit cobalt_qube_led_exit(void)
+{
+ platform_driver_unregister(&cobalt_qube_led_driver);
+}
+
+module_init(cobalt_qube_led_init);
+module_exit(cobalt_qube_led_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Front LED support for Cobalt Server");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");