projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ac67e23b PS |
1 | /* |
| 2 | * LEDs driver for the "User LED" on Routerboard532 | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Phil Sutter <[email protected]> | |
| 5 | * | |
| 6 | * Based on leds-cobalt-qube.c by Florian Fainelly and | |
| 7 | * rb-diag.c (my own standalone driver for both LED and | |
| 8 | * button of Routerboard532). | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/leds.h> | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/platform_device.h> | |
| 14 | ||
| 15 | #include <asm/mach-rc32434/gpio.h> | |
| 16 | #include <asm/mach-rc32434/rb.h> | |
| 17 | ||
| 18 | static void rb532_led_set(struct led_classdev *cdev, | |
| 7a0eff4d | 19 | enum led_brightness brightness) |
| ac67e23b PS |
20 | { |
| 21 | if (brightness) | |
| 22 | set_latch_u5(LO_ULED, 0); | |
| 23 | ||
| 24 | else | |
| 25 | set_latch_u5(0, LO_ULED); | |
| 26 | } | |
| 27 | ||
| 28 | static enum led_brightness rb532_led_get(struct led_classdev *cdev) | |
| 29 | { | |
| 30 | return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF; | |
| 31 | } | |
| 32 | ||
| 33 | static struct led_classdev rb532_uled = { | |
| 34 | .name = "uled", | |
| 35 | .brightness_set = rb532_led_set, | |
| 36 | .brightness_get = rb532_led_get, | |
| 37 | .default_trigger = "nand-disk", | |
| 38 | }; | |
| 39 | ||
| 98ea1ea2 | 40 | static int rb532_led_probe(struct platform_device *pdev) |
| ac67e23b PS |
41 | { |
| 42 | return led_classdev_register(&pdev->dev, &rb532_uled); | |
| 43 | } | |
| 44 | ||
| 678e8a6b | 45 | static int rb532_led_remove(struct platform_device *pdev) |
| ac67e23b PS |
46 | { |
| 47 | led_classdev_unregister(&rb532_uled); | |
| 48 | return 0; | |
| 49 | } | |
| 50 | ||
| 51 | static struct platform_driver rb532_led_driver = { | |
| 52 | .probe = rb532_led_probe, | |
| df07cf81 | 53 | .remove = rb532_led_remove, |
| ac67e23b PS |
54 | .driver = { |
| 55 | .name = "rb532-led", | |
| ac67e23b PS |
56 | }, |
| 57 | }; | |
| 58 | ||
| 892a8843 | 59 | module_platform_driver(rb532_led_driver); |
| ac67e23b PS |
60 | |
| 61 | MODULE_LICENSE("GPL"); | |
| 62 | MODULE_DESCRIPTION("User LED support for Routerboard532"); | |
| 63 | MODULE_AUTHOR("Phil Sutter <[email protected]>"); | |
| 892a8843 | 64 | MODULE_ALIAS("platform:rb532-led"); |