d3aad6399a
Use resource_size() for ioremap. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
138 lines
3.2 KiB
C
138 lines
3.2 KiB
C
/*
|
|
* LEDs driver for the Cobalt Raq series.
|
|
*
|
|
* Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.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 Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
|
|
#define LED_WEB 0x04
|
|
#define LED_POWER_OFF 0x08
|
|
|
|
static void __iomem *led_port;
|
|
static u8 led_value;
|
|
static DEFINE_SPINLOCK(led_value_lock);
|
|
|
|
static void raq_web_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&led_value_lock, flags);
|
|
|
|
if (brightness)
|
|
led_value |= LED_WEB;
|
|
else
|
|
led_value &= ~LED_WEB;
|
|
writeb(led_value, led_port);
|
|
|
|
spin_unlock_irqrestore(&led_value_lock, flags);
|
|
}
|
|
|
|
static struct led_classdev raq_web_led = {
|
|
.name = "raq::web",
|
|
.brightness_set = raq_web_led_set,
|
|
};
|
|
|
|
static void raq_power_off_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness brightness)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&led_value_lock, flags);
|
|
|
|
if (brightness)
|
|
led_value |= LED_POWER_OFF;
|
|
else
|
|
led_value &= ~LED_POWER_OFF;
|
|
writeb(led_value, led_port);
|
|
|
|
spin_unlock_irqrestore(&led_value_lock, flags);
|
|
}
|
|
|
|
static struct led_classdev raq_power_off_led = {
|
|
.name = "raq::power-off",
|
|
.brightness_set = raq_power_off_led_set,
|
|
.default_trigger = "power-off",
|
|
};
|
|
|
|
static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res;
|
|
int retval;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res)
|
|
return -EBUSY;
|
|
|
|
led_port = ioremap(res->start, resource_size(res));
|
|
if (!led_port)
|
|
return -ENOMEM;
|
|
|
|
retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
|
|
if (retval)
|
|
goto err_iounmap;
|
|
|
|
retval = led_classdev_register(&pdev->dev, &raq_web_led);
|
|
if (retval)
|
|
goto err_unregister;
|
|
|
|
return 0;
|
|
|
|
err_unregister:
|
|
led_classdev_unregister(&raq_power_off_led);
|
|
|
|
err_iounmap:
|
|
iounmap(led_port);
|
|
led_port = NULL;
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
|
|
{
|
|
led_classdev_unregister(&raq_power_off_led);
|
|
led_classdev_unregister(&raq_web_led);
|
|
|
|
if (led_port) {
|
|
iounmap(led_port);
|
|
led_port = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver cobalt_raq_led_driver = {
|
|
.probe = cobalt_raq_led_probe,
|
|
.remove = __devexit_p(cobalt_raq_led_remove),
|
|
.driver = {
|
|
.name = "cobalt-raq-leds",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init cobalt_raq_led_init(void)
|
|
{
|
|
return platform_driver_register(&cobalt_raq_led_driver);
|
|
}
|
|
|
|
module_init(cobalt_raq_led_init);
|