1/* 2 * LEDs driver for the "User LED" on Routerboard532 3 * 4 * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org> 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 18static void rb532_led_set(struct led_classdev *cdev, 19 enum led_brightness brightness) 20{ 21 if (brightness) 22 set_latch_u5(LO_ULED, 0); 23 24 else 25 set_latch_u5(0, LO_ULED); 26} 27 28static enum led_brightness rb532_led_get(struct led_classdev *cdev) 29{ 30 return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF; 31} 32 33static 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 40static int __devinit rb532_led_probe(struct platform_device *pdev) 41{ 42 return led_classdev_register(&pdev->dev, &rb532_uled); 43} 44 45static int __devexit rb532_led_remove(struct platform_device *pdev) 46{ 47 led_classdev_unregister(&rb532_uled); 48 return 0; 49} 50 51static struct platform_driver rb532_led_driver = { 52 .probe = rb532_led_probe, 53 .remove = __devexit_p(rb532_led_remove), 54 .driver = { 55 .name = "rb532-led", 56 .owner = THIS_MODULE, 57 }, 58}; 59 60static int __init rb532_led_init(void) 61{ 62 return platform_driver_register(&rb532_led_driver); 63} 64 65static void __exit rb532_led_exit(void) 66{ 67 platform_driver_unregister(&rb532_led_driver); 68} 69 70module_init(rb532_led_init); 71module_exit(rb532_led_exit); 72 73MODULE_ALIAS("platform:rb532-led"); 74 75MODULE_LICENSE("GPL"); 76MODULE_DESCRIPTION("User LED support for Routerboard532"); 77MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>"); 78