1/*
  2 * Copyright 2006 - Florian Fainelli <florian@openwrt.org>
  3 *
  4 * Control the Cobalt Qube/RaQ front LED
  5 */
  6#include <linux/init.h>
  7#include <linux/io.h>
  8#include <linux/ioport.h>
  9#include <linux/leds.h>
 10#include <linux/module.h>
 11#include <linux/platform_device.h>
 12#include <linux/types.h>
 13
 14#define LED_FRONT_LEFT	0x01
 15#define LED_FRONT_RIGHT	0x02
 16
 17static void __iomem *led_port;
 18static u8 led_value;
 19
 20static void qube_front_led_set(struct led_classdev *led_cdev,
 21			       enum led_brightness brightness)
 22{
 23	if (brightness)
 24		led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
 25	else
 26		led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT);
 27	writeb(led_value, led_port);
 28}
 29
 30static struct led_classdev qube_front_led = {
 31	.name			= "qube::front",
 32	.brightness		= LED_FULL,
 33	.brightness_set		= qube_front_led_set,
 34	.default_trigger	= "default-on",
 35};
 36
 37static int __devinit cobalt_qube_led_probe(struct platform_device *pdev)
 38{
 39	struct resource *res;
 40	int retval;
 41
 42	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 43	if (!res)
 44		return -EBUSY;
 45
 46	led_port = ioremap(res->start, resource_size(res));
 47	if (!led_port)
 48		return -ENOMEM;
 49
 50	led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
 51	writeb(led_value, led_port);
 52
 53	retval = led_classdev_register(&pdev->dev, &qube_front_led);
 54	if (retval)
 55		goto err_iounmap;
 56
 57	return 0;
 58
 59err_iounmap:
 60	iounmap(led_port);
 61	led_port = NULL;
 62
 63	return retval;
 64}
 65
 66static int __devexit cobalt_qube_led_remove(struct platform_device *pdev)
 67{
 68	led_classdev_unregister(&qube_front_led);
 69
 70	if (led_port) {
 71		iounmap(led_port);
 72		led_port = NULL;
 73	}
 74
 75	return 0;
 76}
 77
 78/* work with hotplug and coldplug */
 79MODULE_ALIAS("platform:cobalt-qube-leds");
 80
 81static struct platform_driver cobalt_qube_led_driver = {
 82	.probe	= cobalt_qube_led_probe,
 83	.remove	= __devexit_p(cobalt_qube_led_remove),
 84	.driver	= {
 85		.name	= "cobalt-qube-leds",
 86		.owner	= THIS_MODULE,
 87	},
 88};
 89
 90static int __init cobalt_qube_led_init(void)
 91{
 92	return platform_driver_register(&cobalt_qube_led_driver);
 93}
 94
 95static void __exit cobalt_qube_led_exit(void)
 96{
 97	platform_driver_unregister(&cobalt_qube_led_driver);
 98}
 99
100module_init(cobalt_qube_led_init);
101module_exit(cobalt_qube_led_exit);
102
103MODULE_LICENSE("GPL");
104MODULE_DESCRIPTION("Front LED support for Cobalt Server");
105MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright 2006 - Florian Fainelli <florian@openwrt.org>
 4 *
 5 * Control the Cobalt Qube/RaQ front LED
 6 */
 
 7#include <linux/io.h>
 8#include <linux/ioport.h>
 9#include <linux/leds.h>
10#include <linux/module.h>
11#include <linux/platform_device.h>
12#include <linux/types.h>
13
14#define LED_FRONT_LEFT	0x01
15#define LED_FRONT_RIGHT	0x02
16
17static void __iomem *led_port;
18static u8 led_value;
19
20static void qube_front_led_set(struct led_classdev *led_cdev,
21			       enum led_brightness brightness)
22{
23	if (brightness)
24		led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
25	else
26		led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT);
27	writeb(led_value, led_port);
28}
29
30static struct led_classdev qube_front_led = {
31	.name			= "qube::front",
32	.brightness		= LED_FULL,
33	.brightness_set		= qube_front_led_set,
34	.default_trigger	= "default-on",
35};
36
37static int cobalt_qube_led_probe(struct platform_device *pdev)
38{
39	struct resource *res;
 
40
41	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
42	if (!res)
43		return -EBUSY;
44
45	led_port = devm_ioremap(&pdev->dev, res->start, resource_size(res));
46	if (!led_port)
47		return -ENOMEM;
48
49	led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
50	writeb(led_value, led_port);
51
52	return devm_led_classdev_register(&pdev->dev, &qube_front_led);
 
 
 
 
 
 
 
 
 
 
53}
54
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
55static struct platform_driver cobalt_qube_led_driver = {
56	.probe	= cobalt_qube_led_probe,
 
57	.driver	= {
58		.name	= "cobalt-qube-leds",
 
59	},
60};
61
62module_platform_driver(cobalt_qube_led_driver);
 
 
 
 
 
 
 
 
 
 
 
63
64MODULE_LICENSE("GPL");
65MODULE_DESCRIPTION("Front LED support for Cobalt Server");
66MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
67MODULE_ALIAS("platform:cobalt-qube-leds");