// 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");
|
