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86 lines
1.8 KiB
86 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* LEDs driver for Soekris net48xx |
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* |
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* Copyright (C) 2006 Chris Boot <[email protected]> |
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* |
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* Based on leds-ams-delta.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/nsc_gpio.h> |
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#include <linux/scx200_gpio.h> |
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#include <linux/module.h> |
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#define DRVNAME "net48xx-led" |
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#define NET48XX_ERROR_LED_GPIO 20 |
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static struct platform_device *pdev; |
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static void net48xx_error_led_set(struct led_classdev *led_cdev, |
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enum led_brightness value) |
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{ |
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scx200_gpio_ops.gpio_set(NET48XX_ERROR_LED_GPIO, value ? 1 : 0); |
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} |
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static struct led_classdev net48xx_error_led = { |
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.name = "net48xx::error", |
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.brightness_set = net48xx_error_led_set, |
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.flags = LED_CORE_SUSPENDRESUME, |
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}; |
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static int net48xx_led_probe(struct platform_device *pdev) |
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{ |
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return devm_led_classdev_register(&pdev->dev, &net48xx_error_led); |
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} |
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static struct platform_driver net48xx_led_driver = { |
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.probe = net48xx_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 net48xx_led_init(void) |
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{ |
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int ret; |
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/* small hack, but scx200_gpio doesn't set .dev if the probe fails */ |
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if (!scx200_gpio_ops.dev) { |
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ret = -ENODEV; |
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goto out; |
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} |
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ret = platform_driver_register(&net48xx_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(&net48xx_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 net48xx_led_exit(void) |
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{ |
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platform_device_unregister(pdev); |
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platform_driver_unregister(&net48xx_led_driver); |
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} |
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module_init(net48xx_led_init); |
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module_exit(net48xx_led_exit); |
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MODULE_AUTHOR("Chris Boot <[email protected]>"); |
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MODULE_DESCRIPTION("Soekris net48xx LED driver"); |
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MODULE_LICENSE("GPL"); |
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