1ac67e23bSPhil Sutter /* 2ac67e23bSPhil Sutter * LEDs driver for the "User LED" on Routerboard532 3ac67e23bSPhil Sutter * 4ac67e23bSPhil Sutter * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org> 5ac67e23bSPhil Sutter * 6ac67e23bSPhil Sutter * Based on leds-cobalt-qube.c by Florian Fainelly and 7ac67e23bSPhil Sutter * rb-diag.c (my own standalone driver for both LED and 8ac67e23bSPhil Sutter * button of Routerboard532). 9ac67e23bSPhil Sutter */ 10ac67e23bSPhil Sutter 11ac67e23bSPhil Sutter #include <linux/leds.h> 12ac67e23bSPhil Sutter #include <linux/module.h> 13ac67e23bSPhil Sutter #include <linux/platform_device.h> 14ac67e23bSPhil Sutter 15ac67e23bSPhil Sutter #include <asm/mach-rc32434/gpio.h> 16ac67e23bSPhil Sutter #include <asm/mach-rc32434/rb.h> 17ac67e23bSPhil Sutter 18ac67e23bSPhil Sutter static void rb532_led_set(struct led_classdev *cdev, 19ac67e23bSPhil Sutter enum led_brightness brightness) 20ac67e23bSPhil Sutter { 21ac67e23bSPhil Sutter if (brightness) 22ac67e23bSPhil Sutter set_latch_u5(LO_ULED, 0); 23ac67e23bSPhil Sutter 24ac67e23bSPhil Sutter else 25ac67e23bSPhil Sutter set_latch_u5(0, LO_ULED); 26ac67e23bSPhil Sutter } 27ac67e23bSPhil Sutter 28ac67e23bSPhil Sutter static enum led_brightness rb532_led_get(struct led_classdev *cdev) 29ac67e23bSPhil Sutter { 30ac67e23bSPhil Sutter return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF; 31ac67e23bSPhil Sutter } 32ac67e23bSPhil Sutter 33ac67e23bSPhil Sutter static struct led_classdev rb532_uled = { 34ac67e23bSPhil Sutter .name = "uled", 35ac67e23bSPhil Sutter .brightness_set = rb532_led_set, 36ac67e23bSPhil Sutter .brightness_get = rb532_led_get, 37ac67e23bSPhil Sutter .default_trigger = "nand-disk", 38ac67e23bSPhil Sutter }; 39ac67e23bSPhil Sutter 40ac67e23bSPhil Sutter static int __devinit rb532_led_probe(struct platform_device *pdev) 41ac67e23bSPhil Sutter { 42ac67e23bSPhil Sutter return led_classdev_register(&pdev->dev, &rb532_uled); 43ac67e23bSPhil Sutter } 44ac67e23bSPhil Sutter 45ac67e23bSPhil Sutter static int __devexit rb532_led_remove(struct platform_device *pdev) 46ac67e23bSPhil Sutter { 47ac67e23bSPhil Sutter led_classdev_unregister(&rb532_uled); 48ac67e23bSPhil Sutter return 0; 49ac67e23bSPhil Sutter } 50ac67e23bSPhil Sutter 51ac67e23bSPhil Sutter static struct platform_driver rb532_led_driver = { 52ac67e23bSPhil Sutter .probe = rb532_led_probe, 53df07cf81SBill Pemberton .remove = rb532_led_remove, 54ac67e23bSPhil Sutter .driver = { 55ac67e23bSPhil Sutter .name = "rb532-led", 56ac67e23bSPhil Sutter .owner = THIS_MODULE, 57ac67e23bSPhil Sutter }, 58ac67e23bSPhil Sutter }; 59ac67e23bSPhil Sutter 60892a8843SAxel Lin module_platform_driver(rb532_led_driver); 61ac67e23bSPhil Sutter 62ac67e23bSPhil Sutter MODULE_LICENSE("GPL"); 63ac67e23bSPhil Sutter MODULE_DESCRIPTION("User LED support for Routerboard532"); 64ac67e23bSPhil Sutter MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>"); 65892a8843SAxel Lin MODULE_ALIAS("platform:rb532-led"); 66