1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
new file mode 100644
index 0000000000..ef22e1e940
--- /dev/null
+++ b/drivers/leds/leds-cobalt-qube.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2006 - Florian Fainelli <florian@openwrt.org>
+ *
+ * Control the Cobalt Qube/RaQ front LED
+ */
+#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	= "default-on",
+};
+
+static int cobalt_qube_led_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EBUSY;
+
+	led_port = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (!led_port)
+		return -ENOMEM;
+
+	led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
+	writeb(led_value, led_port);
+
+	return devm_led_classdev_register(&pdev->dev, &qube_front_led);
+}
+
+static struct platform_driver cobalt_qube_led_driver = {
+	.probe	= cobalt_qube_led_probe,
+	.driver	= {
+		.name	= "cobalt-qube-leds",
+	},
+};
+
+module_platform_driver(cobalt_qube_led_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Front LED support for Cobalt Server");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_ALIAS("platform:cobalt-qube-leds");