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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * LEDs driver for the "User LED" on Routerboard5324 *5 * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>6 *7 * Based on leds-cobalt-qube.c by Florian Fainelly and8 * rb-diag.c (my own standalone driver for both LED and9 * button of Routerboard532).10 */11 12#include <linux/leds.h>13#include <linux/module.h>14#include <linux/platform_device.h>15 16#include <asm/mach-rc32434/gpio.h>17#include <asm/mach-rc32434/rb.h>18 19static void rb532_led_set(struct led_classdev *cdev,20 enum led_brightness brightness)21{22 if (brightness)23 set_latch_u5(LO_ULED, 0);24 else25 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 rb532_led_probe(struct platform_device *pdev)41{42 return led_classdev_register(&pdev->dev, &rb532_uled);43}44 45static void rb532_led_remove(struct platform_device *pdev)46{47 led_classdev_unregister(&rb532_uled);48}49 50static struct platform_driver rb532_led_driver = {51 .probe = rb532_led_probe,52 .remove_new = rb532_led_remove,53 .driver = {54 .name = "rb532-led",55 },56};57 58module_platform_driver(rb532_led_driver);59 60MODULE_LICENSE("GPL");61MODULE_DESCRIPTION("User LED support for Routerboard532");62MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");63MODULE_ALIAS("platform:rb532-led");64