forked from mirrors/linux
e9aadb864f
Use of resource managed function devm_led_classdev_register to make initialization path simpler. Also removed redundant remove function. Signed-off-by: Fida Mohammad <fmthoker@gmail.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/*
|
|
* LEDs driver for PCEngines WRAP
|
|
*
|
|
* Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org>
|
|
*
|
|
* Based on leds-net48xx.c
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/scx200_gpio.h>
|
|
#include <linux/module.h>
|
|
|
|
#define DRVNAME "wrap-led"
|
|
#define WRAP_POWER_LED_GPIO 2
|
|
#define WRAP_ERROR_LED_GPIO 3
|
|
#define WRAP_EXTRA_LED_GPIO 18
|
|
|
|
static struct platform_device *pdev;
|
|
|
|
static void wrap_power_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
if (value)
|
|
scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
|
|
else
|
|
scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
|
|
}
|
|
|
|
static void wrap_error_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
if (value)
|
|
scx200_gpio_set_low(WRAP_ERROR_LED_GPIO);
|
|
else
|
|
scx200_gpio_set_high(WRAP_ERROR_LED_GPIO);
|
|
}
|
|
|
|
static void wrap_extra_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
if (value)
|
|
scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO);
|
|
else
|
|
scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
|
|
}
|
|
|
|
static struct led_classdev wrap_power_led = {
|
|
.name = "wrap::power",
|
|
.brightness_set = wrap_power_led_set,
|
|
.default_trigger = "default-on",
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
};
|
|
|
|
static struct led_classdev wrap_error_led = {
|
|
.name = "wrap::error",
|
|
.brightness_set = wrap_error_led_set,
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
};
|
|
|
|
static struct led_classdev wrap_extra_led = {
|
|
.name = "wrap::extra",
|
|
.brightness_set = wrap_extra_led_set,
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
};
|
|
|
|
static int wrap_led_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
ret = devm_led_classdev_register(&pdev->dev, &wrap_power_led);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = devm_led_classdev_register(&pdev->dev, &wrap_error_led);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return devm_led_classdev_register(&pdev->dev, &wrap_extra_led);
|
|
}
|
|
|
|
static struct platform_driver wrap_led_driver = {
|
|
.probe = wrap_led_probe,
|
|
.driver = {
|
|
.name = DRVNAME,
|
|
},
|
|
};
|
|
|
|
static int __init wrap_led_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!scx200_gpio_present()) {
|
|
ret = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
ret = platform_driver_register(&wrap_led_driver);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
|
|
if (IS_ERR(pdev)) {
|
|
ret = PTR_ERR(pdev);
|
|
platform_driver_unregister(&wrap_led_driver);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit wrap_led_exit(void)
|
|
{
|
|
platform_device_unregister(pdev);
|
|
platform_driver_unregister(&wrap_led_driver);
|
|
}
|
|
|
|
module_init(wrap_led_init);
|
|
module_exit(wrap_led_exit);
|
|
|
|
MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
|
|
MODULE_DESCRIPTION("PCEngines WRAP LED driver");
|
|
MODULE_LICENSE("GPL");
|
|
|