#include <linux/kthread.h>
#include <acpi/acpi_drivers.h>
-#include <acpi/acinterp.h> /* for acpi_ex_eisa_id_to_string() */
+
+#include "internal.h"
#define _COMPONENT ACPI_BUS_COMPONENT
ACPI_MODULE_NAME("scan");
static LIST_HEAD(acpi_device_list);
static LIST_HEAD(acpi_bus_id_list);
-DEFINE_SPINLOCK(acpi_device_lock);
+DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
struct acpi_device_bus_id{
return 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Hot-removing device %s...\n", device->dev.bus_id));
-
+ "Hot-removing device %s...\n", dev_name(&device->dev)));
if (acpi_bus_trim(device, 1)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Removing device failed\n"));
+ printk(KERN_ERR PREFIX
+ "Removing device failed\n");
return -1;
}
/* power off device */
status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Power-off device failed\n"));
+ printk(KERN_WARNING PREFIX
+ "Power-off device failed\n");
if (device->flags.lockable) {
arg_list.count = 1;
{
const struct acpi_device_id *id;
+ /*
+ * If the device is not present, it is unnecessary to load device
+ * driver for it.
+ */
+ if (!device->status.present)
+ return -ENODEV;
+
if (device->flags.hardware_id) {
for (id = ids; id->id[0]; id++) {
if (!strcmp((char*)id->id, device->pnp.hardware_id))
return 0;
}
+static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct acpi_device *device = data;
+
+ device->driver->ops.notify(device, event);
+}
+
+static acpi_status acpi_device_notify_fixed(void *data)
+{
+ struct acpi_device *device = data;
+
+ acpi_device_notify(device->handle, ACPI_FIXED_HARDWARE_EVENT, device);
+ return AE_OK;
+}
+
+static int acpi_device_install_notify_handler(struct acpi_device *device)
+{
+ acpi_status status;
+ char *hid;
+
+ hid = acpi_device_hid(device);
+ if (!strcmp(hid, ACPI_BUTTON_HID_POWERF))
+ status =
+ acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
+ acpi_device_notify_fixed,
+ device);
+ else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEPF))
+ status =
+ acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
+ acpi_device_notify_fixed,
+ device);
+ else
+ status = acpi_install_notify_handler(device->handle,
+ ACPI_DEVICE_NOTIFY,
+ acpi_device_notify,
+ device);
+
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+ return 0;
+}
+
+static void acpi_device_remove_notify_handler(struct acpi_device *device)
+{
+ if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF))
+ acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
+ acpi_device_notify_fixed);
+ else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF))
+ acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
+ acpi_device_notify_fixed);
+ else
+ acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_device_notify);
+}
+
static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
static int acpi_start_single_object(struct acpi_device *);
static int acpi_device_probe(struct device * dev)
if (!ret) {
if (acpi_dev->bus_ops.acpi_op_start)
acpi_start_single_object(acpi_dev);
+
+ if (acpi_drv->ops.notify) {
+ ret = acpi_device_install_notify_handler(acpi_dev);
+ if (ret) {
+ if (acpi_drv->ops.stop)
+ acpi_drv->ops.stop(acpi_dev,
+ acpi_dev->removal_type);
+ if (acpi_drv->ops.remove)
+ acpi_drv->ops.remove(acpi_dev,
+ acpi_dev->removal_type);
+ return ret;
+ }
+ }
+
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found driver [%s] for device [%s]\n",
acpi_drv->name, acpi_dev->pnp.bus_id));
struct acpi_driver *acpi_drv = acpi_dev->driver;
if (acpi_drv) {
+ if (acpi_drv->ops.notify)
+ acpi_device_remove_notify_handler(acpi_dev);
if (acpi_drv->ops.stop)
acpi_drv->ops.stop(acpi_dev, acpi_dev->removal_type);
if (acpi_drv->ops.remove)
acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
}
acpi_dev->driver = NULL;
- acpi_driver_data(dev) = NULL;
+ acpi_dev->driver_data = NULL;
put_device(dev);
return 0;
}
-static void acpi_device_shutdown(struct device *dev)
-{
- struct acpi_device *acpi_dev = to_acpi_device(dev);
- struct acpi_driver *acpi_drv = acpi_dev->driver;
-
- if (acpi_drv && acpi_drv->ops.shutdown)
- acpi_drv->ops.shutdown(acpi_dev);
-
- return ;
-}
-
struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
- .shutdown = acpi_device_shutdown,
.match = acpi_bus_match,
.probe = acpi_device_probe,
.remove = acpi_device_remove,
*/
INIT_LIST_HEAD(&device->children);
INIT_LIST_HEAD(&device->node);
- INIT_LIST_HEAD(&device->g_list);
INIT_LIST_HEAD(&device->wakeup_list);
new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
return -ENOMEM;
}
- spin_lock(&acpi_device_lock);
+ mutex_lock(&acpi_device_lock);
/*
* Find suitable bus_id and instance number in acpi_bus_id_list
* If failed, create one and link it into acpi_bus_id_list
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
- sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
+ dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
- if (device->parent) {
+ if (device->parent)
list_add_tail(&device->node, &device->parent->children);
- list_add_tail(&device->g_list, &device->parent->g_list);
- } else
- list_add_tail(&device->g_list, &acpi_device_list);
+
if (device->wakeup.flags.valid)
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
if (device->parent)
device->dev.parent = &parent->dev;
result = acpi_device_setup_files(device);
if(result)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error creating sysfs interface for device %s\n", device->dev.bus_id));
+ printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
+ dev_name(&device->dev));
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
end:
- spin_lock(&acpi_device_lock);
- if (device->parent) {
+ mutex_lock(&acpi_device_lock);
+ if (device->parent)
list_del(&device->node);
- list_del(&device->g_list);
- } else
- list_del(&device->g_list);
list_del(&device->wakeup_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
return result;
}
static void acpi_device_unregister(struct acpi_device *device, int type)
{
- spin_lock(&acpi_device_lock);
- if (device->parent) {
+ mutex_lock(&acpi_device_lock);
+ if (device->parent)
list_del(&device->node);
- list_del(&device->g_list);
- } else
- list_del(&device->g_list);
list_del(&device->wakeup_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
acpi_detach_data(device->handle, acpi_bus_data_handler);
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
- acpi_driver_data(device) = NULL;
+ device->driver_data = NULL;
return result;
}
}
}
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
- acpi_handle h_dummy;
-
- if (!device)
- return -EINVAL;
-
- /* Since there is no HID, CID for ACPI Video drivers, we have
- * to check well known required nodes for each feature we support.
- */
-
- /* Does this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
- return 0;
-
- /* Does this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
- return 0;
-
- /* Does this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
- return 0;
-
- return -ENODEV;
-}
-
/*
* acpi_bay_match - see if a device is an ejectable driver bay
*
will get autoloaded and the device might still match
against another driver.
*/
- if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+ if (acpi_is_video_device(device))
cid_add = ACPI_VIDEO_HID;
else if (ACPI_SUCCESS(acpi_bay_match(device)))
cid_add = ACPI_BAY_HID;
hid = ACPI_POWER_HID;
break;
case ACPI_BUS_TYPE_PROCESSOR:
- hid = ACPI_PROCESSOR_HID;
+ hid = ACPI_PROCESSOR_OBJECT_HID;
break;
case ACPI_BUS_TYPE_SYSTEM:
hid = ACPI_SYSTEM_HID;
}
static int
-acpi_is_child_device(struct acpi_device *device,
- int (*matcher)(struct acpi_device *))
-{
- int result = -ENODEV;
-
- do {
- if (ACPI_SUCCESS(matcher(device)))
- return AE_OK;
- } while ((device = device->parent));
-
- return result;
-}
-
-static int
acpi_add_single_object(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type,
struct acpi_bus_ops *ops)
result = -ENODEV;
goto end;
}
- if (!device->status.present) {
- /* Bay and dock should be handled even if absent */
- if (!ACPI_SUCCESS(
- acpi_is_child_device(device, acpi_bay_match)) &&
- !ACPI_SUCCESS(
- acpi_is_child_device(device, acpi_dock_match))) {
- result = -ENODEV;
- goto end;
- }
+ /*
+ * When the device is neither present nor functional, the
+ * device should not be added to Linux ACPI device tree.
+ * When the status of the device is not present but functinal,
+ * it should be added to Linux ACPI tree. For example : bay
+ * device , dock device.
+ * In such conditions it is unncessary to check whether it is
+ * bay device or dock device.
+ */
+ if (!device->status.present && !device->status.functional) {
+ result = -ENODEV;
+ goto end;
}
break;
default:
* TBD: Need notifications and other detection mechanisms
* in place before we can fully implement this.
*/
- if (child->status.present) {
+ /*
+ * When the device is not present but functional, it is also
+ * necessary to scan the children of this device.
+ */
+ if (child->status.present || (!child->status.present &&
+ child->status.functional)) {
status = acpi_get_next_object(ACPI_TYPE_ANY, chandle,
NULL, NULL);
if (ACPI_SUCCESS(status)) {
return result;
}
-int __init acpi_boot_ec_enable(void);
-
-static int __init acpi_scan_init(void)
+int __init acpi_scan_init(void)
{
int result;
struct acpi_bus_ops ops;
-
- if (acpi_disabled)
- return 0;
-
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
ops.acpi_op_start = 1;
*/
result = acpi_bus_scan_fixed(acpi_root);
- /* EC region might be needed at bus_scan, so enable it now */
- acpi_boot_ec_enable();
-
if (!result)
result = acpi_bus_scan(acpi_root, &ops);
Done:
return result;
}
-
-subsys_initcall(acpi_scan_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff