Contributors: 8
Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
Rafael J. Wysocki |
337 |
79.86% |
12 |
63.16% |
Len Brown |
37 |
8.77% |
1 |
5.26% |
Thomas Renninger |
35 |
8.29% |
1 |
5.26% |
Aaron Lu |
4 |
0.95% |
1 |
5.26% |
Andy Shevchenko |
3 |
0.71% |
1 |
5.26% |
Toshi Kani |
3 |
0.71% |
1 |
5.26% |
Thomas Gleixner |
2 |
0.47% |
1 |
5.26% |
Patrick Mochel |
1 |
0.24% |
1 |
5.26% |
Total |
422 |
|
19 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* container.c - ACPI Generic Container Driver
*
* Copyright (C) 2004 Anil S Keshavamurthy (anil.s.keshavamurthy@intel.com)
* Copyright (C) 2004 Keiichiro Tokunaga (tokunaga.keiich@jp.fujitsu.com)
* Copyright (C) 2004 Motoyuki Ito (motoyuki@soft.fujitsu.com)
* Copyright (C) 2004 FUJITSU LIMITED
* Copyright (C) 2004, 2013 Intel Corp.
* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*/
#include <linux/acpi.h>
#include <linux/container.h>
#include "internal.h"
static const struct acpi_device_id container_device_ids[] = {
{"ACPI0004", 0},
{"PNP0A05", 0},
{"PNP0A06", 0},
{"", 0},
};
#ifdef CONFIG_ACPI_CONTAINER
static int check_offline(struct acpi_device *adev, void *not_used)
{
if (acpi_scan_is_offline(adev, false))
return 0;
return -EBUSY;
}
static int acpi_container_offline(struct container_dev *cdev)
{
/* Check all of the dependent devices' physical companions. */
return acpi_dev_for_each_child(ACPI_COMPANION(&cdev->dev), check_offline, NULL);
}
static void acpi_container_release(struct device *dev)
{
kfree(to_container_dev(dev));
}
static int container_device_attach(struct acpi_device *adev,
const struct acpi_device_id *not_used)
{
struct container_dev *cdev;
struct device *dev;
int ret;
if (adev->flags.is_dock_station)
return 0;
cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
if (!cdev)
return -ENOMEM;
cdev->offline = acpi_container_offline;
dev = &cdev->dev;
dev->bus = &container_subsys;
dev_set_name(dev, "%s", dev_name(&adev->dev));
ACPI_COMPANION_SET(dev, adev);
dev->release = acpi_container_release;
ret = device_register(dev);
if (ret) {
put_device(dev);
return ret;
}
adev->driver_data = dev;
return 1;
}
static void container_device_detach(struct acpi_device *adev)
{
struct device *dev = acpi_driver_data(adev);
adev->driver_data = NULL;
if (dev)
device_unregister(dev);
}
static void container_device_online(struct acpi_device *adev)
{
struct device *dev = acpi_driver_data(adev);
kobject_uevent(&dev->kobj, KOBJ_ONLINE);
}
static struct acpi_scan_handler container_handler = {
.ids = container_device_ids,
.attach = container_device_attach,
.detach = container_device_detach,
.hotplug = {
.enabled = true,
.demand_offline = true,
.notify_online = container_device_online,
},
};
void __init acpi_container_init(void)
{
acpi_scan_add_handler(&container_handler);
}
#else
static struct acpi_scan_handler container_handler = {
.ids = container_device_ids,
};
void __init acpi_container_init(void)
{
acpi_scan_add_handler_with_hotplug(&container_handler, "container");
}
#endif /* CONFIG_ACPI_CONTAINER */