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https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
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Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* LEDs driver for PCEngines WRAP
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*
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* Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org>
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*
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* Based on leds-net48xx.c
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/scx200_gpio.h>
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#include <linux/module.h>
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#define DRVNAME "wrap-led"
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#define WRAP_POWER_LED_GPIO 2
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#define WRAP_ERROR_LED_GPIO 3
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#define WRAP_EXTRA_LED_GPIO 18
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static struct platform_device *pdev;
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static void wrap_power_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
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else
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scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
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}
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static void wrap_error_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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scx200_gpio_set_low(WRAP_ERROR_LED_GPIO);
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else
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scx200_gpio_set_high(WRAP_ERROR_LED_GPIO);
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}
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static void wrap_extra_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO);
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else
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scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
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}
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static struct led_classdev wrap_power_led = {
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.name = "wrap::power",
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.brightness_set = wrap_power_led_set,
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.default_trigger = "default-on",
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.flags = LED_CORE_SUSPENDRESUME,
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};
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static struct led_classdev wrap_error_led = {
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.name = "wrap::error",
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.brightness_set = wrap_error_led_set,
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.flags = LED_CORE_SUSPENDRESUME,
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};
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static struct led_classdev wrap_extra_led = {
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.name = "wrap::extra",
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.brightness_set = wrap_extra_led_set,
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.flags = LED_CORE_SUSPENDRESUME,
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};
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static int wrap_led_probe(struct platform_device *pdev)
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{
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int ret;
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ret = devm_led_classdev_register(&pdev->dev, &wrap_power_led);
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if (ret < 0)
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return ret;
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ret = devm_led_classdev_register(&pdev->dev, &wrap_error_led);
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if (ret < 0)
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return ret;
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return devm_led_classdev_register(&pdev->dev, &wrap_extra_led);
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}
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static struct platform_driver wrap_led_driver = {
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.probe = wrap_led_probe,
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.driver = {
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.name = DRVNAME,
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},
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};
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static int __init wrap_led_init(void)
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{
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int ret;
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if (!scx200_gpio_present()) {
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ret = -ENODEV;
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goto out;
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}
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ret = platform_driver_register(&wrap_led_driver);
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if (ret < 0)
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goto out;
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pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
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if (IS_ERR(pdev)) {
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ret = PTR_ERR(pdev);
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platform_driver_unregister(&wrap_led_driver);
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goto out;
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}
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out:
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return ret;
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}
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static void __exit wrap_led_exit(void)
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{
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platform_device_unregister(pdev);
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platform_driver_unregister(&wrap_led_driver);
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}
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module_init(wrap_led_init);
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module_exit(wrap_led_exit);
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MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
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MODULE_DESCRIPTION("PCEngines WRAP LED driver");
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MODULE_LICENSE("GPL");
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