projects / linux-2.6-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/io.h> |
| 7 | #include <linux/ioport.h> | |
| 8 | #include <linux/leds.h> | |
| 2fea6f35 | 9 | #include <linux/module.h> |
| 4276fd73 | 10 | #include <linux/platform_device.h> |
| 2fea6f35 | 11 | #include <linux/types.h> |
| 2fea6f35 | 12 | |
| 4276fd73 YY |
13 | #define LED_FRONT_LEFT 0x01 |
| 14 | #define LED_FRONT_RIGHT 0x02 | |
| 15 | ||
| 16 | static void __iomem *led_port; | |
| 17 | static u8 led_value; | |
| 18 | ||
| 19 | static void qube_front_led_set(struct led_classdev *led_cdev, | |
| 4d404fd5 | 20 | enum led_brightness brightness) |
| 2fea6f35 FF |
21 | { |
| 22 | if (brightness) | |
| 4276fd73 | 23 | led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT; |
| 2fea6f35 | 24 | else |
| 4276fd73 YY |
25 | led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT); |
| 26 | writeb(led_value, led_port); | |
| 27 | } | |
| 28 | ||
| 29 | static struct led_classdev qube_front_led = { | |
| db3f5207 | 30 | .name = "qube::front", |
| 4276fd73 YY |
31 | .brightness = LED_FULL, |
| 32 | .brightness_set = qube_front_led_set, | |
| 51de036b | 33 | .default_trigger = "default-on", |
| 4276fd73 YY |
34 | }; |
| 35 | ||
| 98ea1ea2 | 36 | static int cobalt_qube_led_probe(struct platform_device *pdev) |
| 4276fd73 YY |
37 | { |
| 38 | struct resource *res; | |
| 39 | int retval; | |
| 40 | ||
| 41 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| 42 | if (!res) | |
| 43 | return -EBUSY; | |
| 44 | ||
| f87ef101 | 45 | led_port = devm_ioremap(&pdev->dev, res->start, resource_size(res)); |
| 4276fd73 YY |
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 | retval = led_classdev_register(&pdev->dev, &qube_front_led); | |
| 53 | if (retval) | |
| f87ef101 | 54 | goto err_null; |
| 4276fd73 YY |
55 | |
| 56 | return 0; | |
| 57 | ||
| f87ef101 | 58 | err_null: |
| 4276fd73 YY |
59 | led_port = NULL; |
| 60 | ||
| 61 | return retval; | |
| 62 | } | |
| 63 | ||
| 678e8a6b | 64 | static int cobalt_qube_led_remove(struct platform_device *pdev) |
| 4276fd73 YY |
65 | { |
| 66 | led_classdev_unregister(&qube_front_led); | |
| 67 | ||
| f87ef101 | 68 | if (led_port) |
| 4276fd73 | 69 | led_port = NULL; |
| 4276fd73 YY |
70 | |
| 71 | return 0; | |
| 2fea6f35 FF |
72 | } |
| 73 | ||
| 4276fd73 YY |
74 | static struct platform_driver cobalt_qube_led_driver = { |
| 75 | .probe = cobalt_qube_led_probe, | |
| df07cf81 | 76 | .remove = cobalt_qube_led_remove, |
| 4276fd73 YY |
77 | .driver = { |
| 78 | .name = "cobalt-qube-leds", | |
| 79 | .owner = THIS_MODULE, | |
| 80 | }, | |
| 2fea6f35 FF |
81 | }; |
| 82 | ||
| 892a8843 | 83 | module_platform_driver(cobalt_qube_led_driver); |
| 2fea6f35 FF |
84 | |
| 85 | MODULE_LICENSE("GPL"); | |
| 86 | MODULE_DESCRIPTION("Front LED support for Cobalt Server"); | |
| 87 | MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); | |
| 892a8843 | 88 | MODULE_ALIAS("platform:cobalt-qube-leds"); |