mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 12:16:20 +00:00
859cb7f2a4
Add suspend/resume to the core class and remove all the now unneeded code from various drivers. Originally the class code couldn't support suspend/resume but since class_device can there is no reason for each driver doing its own suspend/resume anymore.
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*
|
|
* leds-hp-disk.c - driver for HP "hard disk protection" LED
|
|
*
|
|
* Copyright (C) 2008 Pavel Machek
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/dmi.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/input.h>
|
|
#include <linux/kthread.h>
|
|
#include <linux/leds.h>
|
|
#include <acpi/acpi_drivers.h>
|
|
|
|
#define DRIVER_NAME "leds-hp-disk"
|
|
#define ACPI_MDPS_CLASS "led"
|
|
|
|
/* For automatic insertion of the module */
|
|
static struct acpi_device_id hpled_device_ids[] = {
|
|
{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
|
|
{"", 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, hpled_device_ids);
|
|
|
|
struct acpi_hpled {
|
|
struct acpi_device *device; /* The ACPI device */
|
|
};
|
|
|
|
static struct acpi_hpled adev;
|
|
|
|
static acpi_status hpled_acpi_write(acpi_handle handle, int reg)
|
|
{
|
|
unsigned long long ret; /* Not used when writing */
|
|
union acpi_object in_obj[1];
|
|
struct acpi_object_list args = { 1, in_obj };
|
|
|
|
in_obj[0].type = ACPI_TYPE_INTEGER;
|
|
in_obj[0].integer.value = reg;
|
|
|
|
return acpi_evaluate_integer(handle, "ALED", &args, &ret);
|
|
}
|
|
|
|
static void hpled_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
hpled_acpi_write(adev.device->handle, !!value);
|
|
}
|
|
|
|
static struct led_classdev hpled_led = {
|
|
.name = "hp:red:hddprotection",
|
|
.default_trigger = "heartbeat",
|
|
.brightness_set = hpled_set,
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
};
|
|
|
|
static int hpled_add(struct acpi_device *device)
|
|
{
|
|
int ret;
|
|
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
adev.device = device;
|
|
strcpy(acpi_device_name(device), DRIVER_NAME);
|
|
strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
|
|
device->driver_data = &adev;
|
|
|
|
ret = led_classdev_register(NULL, &hpled_led);
|
|
return ret;
|
|
}
|
|
|
|
static int hpled_remove(struct acpi_device *device, int type)
|
|
{
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
led_classdev_unregister(&hpled_led);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
static struct acpi_driver leds_hp_driver = {
|
|
.name = DRIVER_NAME,
|
|
.class = ACPI_MDPS_CLASS,
|
|
.ids = hpled_device_ids,
|
|
.ops = {
|
|
.add = hpled_add,
|
|
.remove = hpled_remove,
|
|
}
|
|
};
|
|
|
|
static int __init hpled_init_module(void)
|
|
{
|
|
int ret;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
|
|
ret = acpi_bus_register_driver(&leds_hp_driver);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
printk(KERN_INFO DRIVER_NAME " driver loaded.\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit hpled_exit_module(void)
|
|
{
|
|
acpi_bus_unregister_driver(&leds_hp_driver);
|
|
}
|
|
|
|
MODULE_DESCRIPTION("Driver for HP disk protection LED");
|
|
MODULE_AUTHOR("Pavel Machek <pavel@suse.cz>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(hpled_init_module);
|
|
module_exit(hpled_exit_module);
|