133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/*
|
|
* linux/drivers/leds/leds-ar7.c
|
|
*
|
|
* Copyright (C) 2007 OpenWrt.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/err.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <asm/gpio.h>
|
|
|
|
#define DRVNAME "ar7-leds"
|
|
#define LONGNAME "TI AR7 LEDs driver"
|
|
|
|
MODULE_AUTHOR("Nicolas Thill <nico@openwrt.org>");
|
|
MODULE_DESCRIPTION(LONGNAME);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static void ar7_status_led_set(struct led_classdev *pled,
|
|
enum led_brightness value)
|
|
{
|
|
gpio_set_value(AR7_GPIO_BIT_STATUS_LED, value ? 0 : 1);
|
|
}
|
|
|
|
static struct led_classdev ar7_status_led = {
|
|
.name = "ar7:status",
|
|
.brightness_set = ar7_status_led_set,
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ar7_leds_suspend(struct platform_device *dev,
|
|
pm_message_t state)
|
|
{
|
|
led_classdev_suspend(&ar7_status_led);
|
|
return 0;
|
|
}
|
|
|
|
static int ar7_leds_resume(struct platform_device *dev)
|
|
{
|
|
led_classdev_resume(&ar7_status_led);
|
|
return 0;
|
|
}
|
|
#else /* CONFIG_PM */
|
|
#define ar7_leds_suspend NULL
|
|
#define ar7_leds_resume NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
static int ar7_leds_probe(struct platform_device *pdev)
|
|
{
|
|
int rc;
|
|
|
|
rc = led_classdev_register(&pdev->dev, &ar7_status_led);
|
|
if (rc < 0 )
|
|
goto out;
|
|
|
|
ar7_gpio_enable(AR7_GPIO_BIT_STATUS_LED);
|
|
gpio_direction_output(AR7_GPIO_BIT_STATUS_LED);
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static int ar7_leds_remove(struct platform_device *pdev)
|
|
{
|
|
led_classdev_unregister(&ar7_status_led);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_device *ar7_leds_device;
|
|
|
|
static struct platform_driver ar7_leds_driver = {
|
|
.probe = ar7_leds_probe,
|
|
.remove = ar7_leds_remove,
|
|
.suspend = ar7_leds_suspend,
|
|
.resume = ar7_leds_resume,
|
|
.driver = {
|
|
.name = DRVNAME,
|
|
},
|
|
};
|
|
|
|
static int __init ar7_leds_init(void)
|
|
{
|
|
int rc;
|
|
|
|
ar7_leds_device = platform_device_alloc(DRVNAME, -1);
|
|
if (!ar7_leds_device)
|
|
return -ENOMEM;
|
|
|
|
rc = platform_device_add(ar7_leds_device);
|
|
if (rc < 0)
|
|
goto out_put;
|
|
|
|
rc = platform_driver_register(&ar7_leds_driver);
|
|
if (rc < 0)
|
|
goto out_put;
|
|
|
|
goto out;
|
|
|
|
out_put:
|
|
platform_device_put(ar7_leds_device);
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static void __exit ar7_leds_exit(void)
|
|
{
|
|
platform_driver_unregister(&ar7_leds_driver);
|
|
platform_device_unregister(ar7_leds_device);
|
|
}
|
|
|
|
module_init(ar7_leds_init);
|
|
module_exit(ar7_leds_exit);
|