projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2fea6f35 FF |
1 | /* |
| 2 | * Copyright 2006 - Florian Fainelli <florian@openwrt.org> | |
| 3 | * | |
| 4 | * Control the Cobalt Qube/RaQ front LED | |
| 5 | */ | |
| 4276fd73 YY |
6 | #include <linux/init.h> |
| 7 | #include <linux/io.h> | |
| 8 | #include <linux/ioport.h> | |
| 9 | #include <linux/leds.h> | |
| 2fea6f35 | 10 | #include <linux/module.h> |
| 4276fd73 | 11 | #include <linux/platform_device.h> |
| 2fea6f35 | 12 | #include <linux/types.h> |
| 2fea6f35 | 13 | |
| 4276fd73 YY |
14 | #define LED_FRONT_LEFT 0x01 |
| 15 | #define LED_FRONT_RIGHT 0x02 | |
| 16 | ||
| 17 | static void __iomem *led_port; | |
| 18 | static u8 led_value; | |
| 19 | ||
| 20 | static void qube_front_led_set(struct led_classdev *led_cdev, | |
| 4d404fd5 | 21 | enum led_brightness brightness) |
| 2fea6f35 FF |
22 | { |
| 23 | if (brightness) | |
| 4276fd73 | 24 | led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT; |
| 2fea6f35 | 25 | else |
| 4276fd73 YY |
26 | led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT); |
| 27 | writeb(led_value, led_port); | |
| 28 | } | |
| 29 | ||
| 30 | static struct led_classdev qube_front_led = { | |
| db3f5207 | 31 | .name = "qube::front", |
| 4276fd73 YY |
32 | .brightness = LED_FULL, |
| 33 | .brightness_set = qube_front_led_set, | |
| 51de036b | 34 | .default_trigger = "default-on", |
| 4276fd73 YY |
35 | }; |
| 36 | ||
| 37 | static 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 | ||
| 3c0f6e1e | 46 | led_port = ioremap(res->start, resource_size(res)); |
| 4276fd73 YY |
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 | ||
| 59 | err_iounmap: | |
| 60 | iounmap(led_port); | |
| 61 | led_port = NULL; | |
| 62 | ||
| 63 | return retval; | |
| 64 | } | |
| 65 | ||
| 66 | static 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; | |
| 2fea6f35 FF |
76 | } |
| 77 | ||
| 4276fd73 YY |
78 | static struct platform_driver cobalt_qube_led_driver = { |
| 79 | .probe = cobalt_qube_led_probe, | |
| df07cf81 | 80 | .remove = cobalt_qube_led_remove, |
| 4276fd73 YY |
81 | .driver = { |
| 82 | .name = "cobalt-qube-leds", | |
| 83 | .owner = THIS_MODULE, | |
| 84 | }, | |
| 2fea6f35 FF |
85 | }; |
| 86 | ||
| 892a8843 | 87 | module_platform_driver(cobalt_qube_led_driver); |
| 2fea6f35 FF |
88 | |
| 89 | MODULE_LICENSE("GPL"); | |
| 90 | MODULE_DESCRIPTION("Front LED support for Cobalt Server"); | |
| 91 | MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); | |
| 892a8843 | 92 | MODULE_ALIAS("platform:cobalt-qube-leds"); |