projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 1a87d942 CB |
2 | /* |
| 3 | * LEDs driver for Soekris net48xx | |
| 4 | * | |
| 5 | * Copyright (C) 2006 Chris Boot <[email protected]> | |
| 6 | * | |
| 7 | * Based on leds-ams-delta.c | |
| 1a87d942 CB |
8 | */ |
| 9 | ||
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/init.h> | |
| 12 | #include <linux/platform_device.h> | |
| 13 | #include <linux/leds.h> | |
| 14 | #include <linux/err.h> | |
| 6023ff73 | 15 | #include <linux/io.h> |
| cfedc920 | 16 | #include <linux/nsc_gpio.h> |
| 1a87d942 | 17 | #include <linux/scx200_gpio.h> |
| 54f4dedb | 18 | #include <linux/module.h> |
| 1a87d942 | 19 | |
| bca3bffe | 20 | #define DRVNAME "net48xx-led" |
| 1a87d942 CB |
21 | #define NET48XX_ERROR_LED_GPIO 20 |
| 22 | ||
| 23 | static struct platform_device *pdev; | |
| 24 | ||
| 25 | static void net48xx_error_led_set(struct led_classdev *led_cdev, | |
| 26 | enum led_brightness value) | |
| 27 | { | |
| cfedc920 | 28 | scx200_gpio_ops.gpio_set(NET48XX_ERROR_LED_GPIO, value ? 1 : 0); |
| 1a87d942 CB |
29 | } |
| 30 | ||
| 31 | static struct led_classdev net48xx_error_led = { | |
| 6c152bee | 32 | .name = "net48xx::error", |
| 1a87d942 | 33 | .brightness_set = net48xx_error_led_set, |
| 859cb7f2 | 34 | .flags = LED_CORE_SUSPENDRESUME, |
| 1a87d942 CB |
35 | }; |
| 36 | ||
| 1a87d942 CB |
37 | static int net48xx_led_probe(struct platform_device *pdev) |
| 38 | { | |
| 51167623 | 39 | return devm_led_classdev_register(&pdev->dev, &net48xx_error_led); |
| 1a87d942 CB |
40 | } |
| 41 | ||
| 42 | static struct platform_driver net48xx_led_driver = { | |
| 1a87d942 | 43 | .probe = net48xx_led_probe, |
| 1a87d942 | 44 | .driver = { |
| bca3bffe | 45 | .name = DRVNAME, |
| 1a87d942 CB |
46 | }, |
| 47 | }; | |
| 48 | ||
| 49 | static int __init net48xx_led_init(void) | |
| 50 | { | |
| 51 | int ret; | |
| 52 | ||
| cfedc920 CB |
53 | /* small hack, but scx200_gpio doesn't set .dev if the probe fails */ |
| 54 | if (!scx200_gpio_ops.dev) { | |
| 1a87d942 CB |
55 | ret = -ENODEV; |
| 56 | goto out; | |
| 57 | } | |
| 58 | ||
| 59 | ret = platform_driver_register(&net48xx_led_driver); | |
| 60 | if (ret < 0) | |
| 61 | goto out; | |
| 62 | ||
| bca3bffe | 63 | pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); |
| 1a87d942 CB |
64 | if (IS_ERR(pdev)) { |
| 65 | ret = PTR_ERR(pdev); | |
| 66 | platform_driver_unregister(&net48xx_led_driver); | |
| 67 | goto out; | |
| 68 | } | |
| 69 | ||
| 70 | out: | |
| 71 | return ret; | |
| 72 | } | |
| 73 | ||
| 74 | static void __exit net48xx_led_exit(void) | |
| 75 | { | |
| 76 | platform_device_unregister(pdev); | |
| 77 | platform_driver_unregister(&net48xx_led_driver); | |
| 78 | } | |
| 79 | ||
| 80 | module_init(net48xx_led_init); | |
| 81 | module_exit(net48xx_led_exit); | |
| 82 | ||
| 83 | MODULE_AUTHOR("Chris Boot <[email protected]>"); | |
| 84 | MODULE_DESCRIPTION("Soekris net48xx LED driver"); | |
| 85 | MODULE_LICENSE("GPL"); | |
| 86 |