#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/acpi.h>
+#include <linux/signal.h>
+#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");
#define ACPI_BUS_HID "LNXSYBUS"
#define ACPI_BUS_DEVICE_NAME "System Bus"
+#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
+
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{
int size)
{
int len;
+ int count;
- if (!acpi_dev->flags.hardware_id)
+ if (!acpi_dev->flags.hardware_id && !acpi_dev->flags.compatible_ids)
return -ENODEV;
- len = snprintf(modalias, size, "acpi:%s:",
- acpi_dev->pnp.hardware_id);
- if (len < 0 || len >= size)
- return -EINVAL;
+ len = snprintf(modalias, size, "acpi:");
size -= len;
+ if (acpi_dev->flags.hardware_id) {
+ count = snprintf(&modalias[len], size, "%s:",
+ acpi_dev->pnp.hardware_id);
+ if (count < 0 || count >= size)
+ return -EINVAL;
+ len += count;
+ size -= count;
+ }
+
if (acpi_dev->flags.compatible_ids) {
- struct acpi_compatible_id_list *cid_list;
+ struct acpica_device_id_list *cid_list;
int i;
- int count;
cid_list = acpi_dev->pnp.cid_list;
for (i = 0; i < cid_list->count; i++) {
count = snprintf(&modalias[len], size, "%s:",
- cid_list->id[i].value);
+ cid_list->ids[i].string);
if (count < 0 || count >= size) {
printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size",
acpi_dev->pnp.device_name, i);
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
-static int acpi_eject_operation(acpi_handle handle, int lockable)
+static void acpi_bus_hot_remove_device(void *context)
{
+ struct acpi_device *device;
+ acpi_handle handle = context;
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
- /*
- * TBD: evaluate _PS3?
- */
+ if (acpi_bus_get_device(handle, &device))
+ return;
- if (lockable) {
+ if (!device)
+ return;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Hot-removing device %s...\n", dev_name(&device->dev)));
+
+ if (acpi_bus_trim(device, 1)) {
+ printk(KERN_ERR PREFIX
+ "Removing device failed\n");
+ return;
+ }
+
+ /* power off device */
+ status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
+ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
+ printk(KERN_WARNING PREFIX
+ "Power-off device failed\n");
+
+ if (device->flags.lockable) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
/*
* TBD: _EJD support.
*/
-
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- return (-ENODEV);
- }
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING PREFIX
+ "Eject device failed\n");
- return (0);
+ return;
}
static ssize_t
acpi_eject_store(struct device *d, struct device_attribute *attr,
const char *buf, size_t count)
{
- int result;
int ret = count;
- int islockable;
acpi_status status;
- acpi_handle handle;
acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
goto err;
}
- islockable = acpi_device->flags.lockable;
- handle = acpi_device->handle;
-
- result = acpi_bus_trim(acpi_device, 1);
-
- if (!result)
- result = acpi_eject_operation(handle, islockable);
-
- if (result) {
- ret = -EBUSY;
- }
- err:
+ acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle);
+err:
return ret;
}
int result;
result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
- if(result)
+ if (result)
goto end;
result = sprintf(buf, "%s\n", (char*)path.pointer);
kfree(path.pointer);
- end:
+end:
return result;
}
static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
/*
* Devices gotten from FADT don't have a "path" attribute
*/
- if(dev->handle) {
+ if (dev->handle) {
result = device_create_file(&dev->dev, &dev_attr_path);
- if(result)
+ if (result)
goto end;
}
- if(dev->flags.hardware_id) {
+ if (dev->flags.hardware_id) {
result = device_create_file(&dev->dev, &dev_attr_hid);
- if(result)
+ if (result)
goto end;
}
- if (dev->flags.hardware_id || dev->flags.compatible_ids){
+ if (dev->flags.hardware_id || dev->flags.compatible_ids) {
result = device_create_file(&dev->dev, &dev_attr_modalias);
- if(result)
+ if (result)
goto end;
}
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
if (ACPI_SUCCESS(status))
result = device_create_file(&dev->dev, &dev_attr_eject);
- end:
+end:
return result;
}
if (dev->flags.hardware_id || dev->flags.compatible_ids)
device_remove_file(&dev->dev, &dev_attr_modalias);
- if(dev->flags.hardware_id)
+ if (dev->flags.hardware_id)
device_remove_file(&dev->dev, &dev_attr_hid);
- if(dev->handle)
+ if (dev->handle)
device_remove_file(&dev->dev, &dev_attr_path);
}
/* --------------------------------------------------------------------------
{
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))
}
if (device->flags.compatible_ids) {
- struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
+ struct acpica_device_id_list *cid_list = device->pnp.cid_list;
int i;
for (id = ids; id->id[0]; id++) {
/* compare multiple _CID entries against driver ids */
for (i = 0; i < cid_list->count; i++) {
if (!strcmp((char*)id->id,
- cid_list->id[i].value))
+ cid_list->ids[i].string))
return 0;
}
}
struct acpi_device *acpi_dev = to_acpi_device(dev);
kfree(acpi_dev->pnp.cid_list);
+ if (acpi_dev->flags.hardware_id)
+ kfree(acpi_dev->pnp.hardware_id);
+ if (acpi_dev->flags.unique_id)
+ kfree(acpi_dev->pnp.unique_id);
kfree(acpi_dev);
}
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;
+
+ /* Fixed hardware devices have no handles */
+ acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
+ return AE_OK;
+}
+
+static int acpi_device_install_notify_handler(struct acpi_device *device)
+{
+ acpi_status status;
+
+ if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
+ status =
+ acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
+ acpi_device_notify_fixed,
+ device);
+ else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
+ 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 (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
+ acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
+ acpi_device_notify_fixed);
+ else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
+ 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.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.stop)
- acpi_drv->ops.stop(acpi_dev, acpi_dev->removal_type);
+ if (acpi_drv->ops.notify)
+ acpi_device_remove_notify_handler(acpi_dev);
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,
.uevent = acpi_device_uevent,
};
-static int acpi_device_register(struct acpi_device *device,
- struct acpi_device *parent)
+static int acpi_device_register(struct acpi_device *device)
{
int result;
struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id;
int found = 0;
+
/*
* Linkage
* -------
*/
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
break;
}
}
- if(!found) {
+ if (!found) {
acpi_device_bus_id = new_bus_id;
strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device");
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;
+ device->dev.parent = &device->parent->dev;
device->dev.bus = &acpi_bus_type;
- device_initialize(&device->dev);
device->dev.release = &acpi_device_release;
- result = device_add(&device->dev);
- if(result) {
- printk(KERN_ERR PREFIX "Error adding device %s", device->dev.bus_id);
+ result = device_register(&device->dev);
+ if (result) {
+ dev_err(&device->dev, "Error registering device\n");
goto end;
}
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));
+ if (result)
+ 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) {
+end:
+ 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);
* @device: the device to add and initialize
* @driver: driver for the device
*
- * Used to initialize a device via its device driver. Called whenever a
+ * Used to initialize a device via its device driver. Called whenever a
* driver is bound to a device. Invokes the driver's add() ops.
*/
static int
{
int result = 0;
-
if (!device || !driver)
return -EINVAL;
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
- acpi_driver_data(device) = NULL;
+ device->driver_data = NULL;
return result;
}
/* --------------------------------------------------------------------------
Device Enumeration
-------------------------------------------------------------------------- */
+static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
+{
+ acpi_status status;
+ int ret;
+ struct acpi_device *device;
+
+ /*
+ * Fixed hardware devices do not appear in the namespace and do not
+ * have handles, but we fabricate acpi_devices for them, so we have
+ * to deal with them specially.
+ */
+ if (handle == NULL)
+ return acpi_root;
+
+ do {
+ status = acpi_get_parent(handle, &handle);
+ if (status == AE_NULL_ENTRY)
+ return NULL;
+ if (ACPI_FAILURE(status))
+ return acpi_root;
+
+ ret = acpi_bus_get_device(handle, &device);
+ if (ret == 0)
+ return device;
+ } while (1);
+}
+
acpi_status
acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
{
}
EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
-void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
+void acpi_bus_data_handler(acpi_handle handle, void *context)
{
/* TBD */
device->wakeup.resources.count = package->package.count - 2;
for (i = 0; i < device->wakeup.resources.count; i++) {
element = &(package->package.elements[i + 2]);
- if (element->type != ACPI_TYPE_ANY) {
+ if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
return AE_BAD_DATA;
- }
device->wakeup.resources.handles[i] = element->reference.handle;
}
acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
+ int psw_error;
struct acpi_device_id button_device_ids[] = {
{"PNP0C0D", 0},
{"", 0},
};
-
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
if (ACPI_FAILURE(status)) {
kfree(buffer.pointer);
device->wakeup.flags.valid = 1;
+ device->wakeup.prepare_count = 0;
+ /* Call _PSW/_DSW object to disable its ability to wake the sleeping
+ * system for the ACPI device with the _PRW object.
+ * The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
+ * So it is necessary to call _DSW object first. Only when it is not
+ * present will the _PSW object used.
+ */
+ psw_error = acpi_device_sleep_wake(device, 0, 0, 0);
+ if (psw_error)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "error in _DSW or _PSW evaluation\n"));
+
/* Power button, Lid switch always enable wakeup */
if (!acpi_match_device_ids(device, button_device_ids))
device->wakeup.flags.run_wake = 1;
- end:
+end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
return 0;
/* TBD: System wake support and resource requirements. */
device->power.state = ACPI_STATE_UNKNOWN;
+ acpi_bus_get_power(device->handle, &(device->power.state));
return 0;
}
return 0;
}
-static void acpi_device_get_busid(struct acpi_device *device,
- acpi_handle handle, int type)
+static void acpi_device_get_busid(struct acpi_device *device)
{
char bus_id[5] = { '?', 0 };
struct acpi_buffer buffer = { sizeof(bus_id), bus_id };
* The device's Bus ID is simply the object name.
* TBD: Shouldn't this value be unique (within the ACPI namespace)?
*/
- switch (type) {
- case ACPI_BUS_TYPE_SYSTEM:
+ if (ACPI_IS_ROOT_DEVICE(device)) {
strcpy(device->pnp.bus_id, "ACPI");
- break;
+ return;
+ }
+
+ switch (device->device_type) {
case ACPI_BUS_TYPE_POWER_BUTTON:
strcpy(device->pnp.bus_id, "PWRF");
break;
strcpy(device->pnp.bus_id, "SLPF");
break;
default:
- acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
+ acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer);
/* Clean up trailing underscores (if any) */
for (i = 3; i > 1; i--) {
if (bus_id[i] == '_')
}
}
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
- acpi_handle h_dummy1;
- acpi_handle h_dummy2;
- acpi_handle h_dummy3;
-
-
- 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_dummy1)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
- return 0;
-
- /* Does this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
- return 0;
-
- /* Does this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
- return 0;
-
- return -ENODEV;
-}
-
/*
* acpi_bay_match - see if a device is an ejectable driver bay
*
return acpi_get_handle(device->handle, "_DCK", &tmp);
}
-static void acpi_device_set_id(struct acpi_device *device,
- struct acpi_device *parent, acpi_handle handle,
- int type)
+static struct acpica_device_id_list*
+acpi_add_cid(
+ struct acpi_device_info *info,
+ struct acpica_device_id *new_cid)
{
- struct acpi_device_info *info;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpica_device_id_list *cid;
+ char *next_id_string;
+ acpi_size cid_length;
+ acpi_size new_cid_length;
+ u32 i;
+
+
+ /* Allocate new CID list with room for the new CID */
+
+ if (!new_cid)
+ new_cid_length = info->compatible_id_list.list_size;
+ else if (info->compatible_id_list.list_size)
+ new_cid_length = info->compatible_id_list.list_size +
+ new_cid->length + sizeof(struct acpica_device_id);
+ else
+ new_cid_length = sizeof(struct acpica_device_id_list) + new_cid->length;
+
+ cid = ACPI_ALLOCATE_ZEROED(new_cid_length);
+ if (!cid) {
+ return NULL;
+ }
+
+ cid->list_size = new_cid_length;
+ cid->count = info->compatible_id_list.count;
+ if (new_cid)
+ cid->count++;
+ next_id_string = (char *) cid->ids + (cid->count * sizeof(struct acpica_device_id));
+
+ /* Copy all existing CIDs */
+
+ for (i = 0; i < info->compatible_id_list.count; i++) {
+ cid_length = info->compatible_id_list.ids[i].length;
+ cid->ids[i].string = next_id_string;
+ cid->ids[i].length = cid_length;
+
+ ACPI_MEMCPY(next_id_string, info->compatible_id_list.ids[i].string,
+ cid_length);
+
+ next_id_string += cid_length;
+ }
+
+ /* Append the new CID */
+
+ if (new_cid) {
+ cid->ids[i].string = next_id_string;
+ cid->ids[i].length = new_cid->length;
+
+ ACPI_MEMCPY(next_id_string, new_cid->string, new_cid->length);
+ }
+
+ return cid;
+}
+
+static void acpi_device_set_id(struct acpi_device *device)
+{
+ struct acpi_device_info *info = NULL;
char *hid = NULL;
char *uid = NULL;
- struct acpi_compatible_id_list *cid_list = NULL;
- const char *cid_add = NULL;
+ struct acpica_device_id_list *cid_list = NULL;
+ char *cid_add = NULL;
acpi_status status;
- switch (type) {
+ switch (device->device_type) {
case ACPI_BUS_TYPE_DEVICE:
- status = acpi_get_object_info(handle, &buffer);
+ if (ACPI_IS_ROOT_DEVICE(device)) {
+ hid = ACPI_SYSTEM_HID;
+ break;
+ }
+
+ status = acpi_get_object_info(device->handle, &info);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "%s: Error reading device info\n", __FUNCTION__);
+ printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
return;
}
- info = buffer.pointer;
if (info->valid & ACPI_VALID_HID)
- hid = info->hardware_id.value;
+ hid = info->hardware_id.string;
if (info->valid & ACPI_VALID_UID)
- uid = info->unique_id.value;
+ uid = info->unique_id.string;
if (info->valid & ACPI_VALID_CID)
- cid_list = &info->compatibility_id;
+ cid_list = &info->compatible_id_list;
if (info->valid & ACPI_VALID_ADR) {
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
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;
- break;
- case ACPI_BUS_TYPE_SYSTEM:
- hid = ACPI_SYSTEM_HID;
+ hid = ACPI_PROCESSOR_OBJECT_HID;
break;
case ACPI_BUS_TYPE_THERMAL:
hid = ACPI_THERMAL_HID;
break;
}
- /*
+ /*
* \_SB
* ----
* Fix for the system root bus device -- the only root-level device.
*/
- if (((acpi_handle)parent == ACPI_ROOT_OBJECT) && (type == ACPI_BUS_TYPE_DEVICE)) {
+ if (((acpi_handle)device->parent == ACPI_ROOT_OBJECT) &&
+ (device->device_type == ACPI_BUS_TYPE_DEVICE)) {
hid = ACPI_BUS_HID;
strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
}
if (hid) {
- strcpy(device->pnp.hardware_id, hid);
- device->flags.hardware_id = 1;
+ device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1);
+ if (device->pnp.hardware_id) {
+ strcpy(device->pnp.hardware_id, hid);
+ device->flags.hardware_id = 1;
+ }
}
+ if (!device->flags.hardware_id)
+ device->pnp.hardware_id = "";
+
if (uid) {
- strcpy(device->pnp.unique_id, uid);
- device->flags.unique_id = 1;
+ device->pnp.unique_id = ACPI_ALLOCATE_ZEROED(strlen (uid) + 1);
+ if (device->pnp.unique_id) {
+ strcpy(device->pnp.unique_id, uid);
+ device->flags.unique_id = 1;
+ }
}
+ if (!device->flags.unique_id)
+ device->pnp.unique_id = "";
+
if (cid_list || cid_add) {
- struct acpi_compatible_id_list *list;
- int size = 0;
- int count = 0;
-
- if (cid_list) {
- size = cid_list->size;
- } else if (cid_add) {
- size = sizeof(struct acpi_compatible_id_list);
- cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
- if (!cid_list) {
- printk(KERN_ERR "Memory allocation error\n");
- kfree(buffer.pointer);
- return;
- } else {
- cid_list->count = 0;
- cid_list->size = size;
- }
+ struct acpica_device_id_list *list;
+
+ if (cid_add) {
+ struct acpica_device_id cid;
+ cid.length = strlen (cid_add) + 1;
+ cid.string = cid_add;
+
+ list = acpi_add_cid(info, &cid);
+ } else {
+ list = acpi_add_cid(info, NULL);
}
- if (cid_add)
- size += sizeof(struct acpi_compatible_id);
- list = kmalloc(size, GFP_KERNEL);
if (list) {
- if (cid_list) {
- memcpy(list, cid_list, cid_list->size);
- count = cid_list->count;
- }
- if (cid_add) {
- strncpy(list->id[count].value, cid_add,
- ACPI_MAX_CID_LENGTH);
- count++;
- device->flags.compatible_ids = 1;
- }
- list->size = size;
- list->count = count;
device->pnp.cid_list = list;
- } else
- printk(KERN_ERR PREFIX "Memory allocation error\n");
+ if (cid_add)
+ device->flags.compatible_ids = 1;
+ }
}
- kfree(buffer.pointer);
+ kfree(info);
}
-static int acpi_device_set_context(struct acpi_device *device, int type)
+static int acpi_device_set_context(struct acpi_device *device)
{
- acpi_status status = AE_OK;
- int result = 0;
+ acpi_status status;
+
/*
* Context
* -------
* Attach this 'struct acpi_device' to the ACPI object. This makes
- * resolutions from handle->device very efficient. Note that we need
- * to be careful with fixed-feature devices as they all attach to the
- * root object.
+ * resolutions from handle->device very efficient. Fixed hardware
+ * devices have no handles, so we skip them.
*/
- if (type != ACPI_BUS_TYPE_POWER_BUTTON &&
- type != ACPI_BUS_TYPE_SLEEP_BUTTON) {
- status = acpi_attach_data(device->handle,
- acpi_bus_data_handler, device);
+ if (!device->handle)
+ return 0;
- if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Error attaching device data\n");
- result = -ENODEV;
- }
- }
- return result;
+ status = acpi_attach_data(device->handle,
+ acpi_bus_data_handler, device);
+ if (ACPI_SUCCESS(status))
+ return 0;
+
+ printk(KERN_ERR PREFIX "Error attaching device data\n");
+ return -ENODEV;
}
static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
return 0;
}
-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)
+static int acpi_add_single_object(struct acpi_device **child,
+ acpi_handle handle, int type,
+ struct acpi_bus_ops *ops)
{
- int result = 0;
- struct acpi_device *device = NULL;
-
-
- if (!child)
- return -EINVAL;
+ int result;
+ struct acpi_device *device;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL);
if (!device) {
return -ENOMEM;
}
+ device->device_type = type;
device->handle = handle;
- device->parent = parent;
+ device->parent = acpi_bus_get_parent(handle);
device->bus_ops = *ops; /* workround for not call .start */
-
- acpi_device_get_busid(device, handle, type);
+ acpi_device_get_busid(device);
/*
* Flags
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:
* Hardware ID, Unique ID, & Bus Address
* -------------------------------------
*/
- acpi_device_set_id(device, parent, handle, type);
+ acpi_device_set_id(device);
/*
* Power Management
goto end;
}
- if ((result = acpi_device_set_context(device, type)))
+ if ((result = acpi_device_set_context(device)))
goto end;
- result = acpi_device_register(device, parent);
+ result = acpi_device_register(device);
/*
* Bind _ADR-Based Devices when hot add
device->parent->ops.bind(device);
}
- end:
- if (!result)
+end:
+ if (!result) {
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Adding %s [%s] parent %s\n", dev_name(&device->dev),
+ (char *) buffer.pointer,
+ device->parent ? dev_name(&device->parent->dev) :
+ "(null)"));
+ kfree(buffer.pointer);
*child = device;
- else {
- kfree(device->pnp.cid_list);
- kfree(device);
- }
+ } else
+ acpi_device_release(&device->dev);
return result;
}
-static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
+static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops)
{
acpi_status status = AE_OK;
struct acpi_device *parent = NULL;
acpi_handle chandle = NULL;
acpi_object_type type = 0;
u32 level = 1;
+ int ret;
-
- if (!start)
- return -EINVAL;
-
- parent = start;
- phandle = start->handle;
+ /*
+ * We must have an acpi_device for the starting node already, and
+ * we scan its children.
+ */
+ phandle = handle;
+ ret = acpi_bus_get_device(phandle, &parent);
+ if (ret)
+ return ret;
/*
* Parse through the ACPI namespace, identify all 'devices', and
}
if (ops->acpi_op_add)
- status = acpi_add_single_object(&child, parent,
- chandle, type, ops);
+ status = acpi_add_single_object(&child, chandle, type,
+ ops);
else
status = acpi_bus_get_device(chandle, &child);
* 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)) {
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
- result = acpi_add_single_object(child, parent, handle, type, &ops);
+ result = acpi_add_single_object(child, handle, type, &ops);
if (!result)
- result = acpi_bus_scan(*child, &ops);
+ result = acpi_bus_scan((*child)->handle, &ops);
return result;
}
-
EXPORT_SYMBOL(acpi_bus_add);
int acpi_bus_start(struct acpi_device *device)
int result;
struct acpi_bus_ops ops;
-
- if (!device)
- return -EINVAL;
+ memset(&ops, 0, sizeof(ops));
+ ops.acpi_op_start = 1;
result = acpi_start_single_object(device);
- if (!result) {
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_start = 1;
- result = acpi_bus_scan(device, &ops);
- }
+ if (!result)
+ result = acpi_bus_scan(device->handle, &ops);
+
return result;
}
-
EXPORT_SYMBOL(acpi_bus_start);
int acpi_bus_trim(struct acpi_device *start, int rmdevice)
}
EXPORT_SYMBOL_GPL(acpi_bus_trim);
-
-static int acpi_bus_scan_fixed(struct acpi_device *root)
+static int acpi_bus_scan_fixed(void)
{
int result = 0;
struct acpi_device *device = NULL;
struct acpi_bus_ops ops;
- if (!root)
- return -ENODEV;
-
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
ops.acpi_op_start = 1;
* Enumerate all fixed-feature devices.
*/
if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
- result = acpi_add_single_object(&device, acpi_root,
- NULL,
+ result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_POWER_BUTTON,
&ops);
}
if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
- result = acpi_add_single_object(&device, acpi_root,
- NULL,
+ result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_SLEEP_BUTTON,
&ops);
}
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;
/*
* Create the root device in the bus's device tree
*/
- result = acpi_add_single_object(&acpi_root, NULL, ACPI_ROOT_OBJECT,
- ACPI_BUS_TYPE_SYSTEM, &ops);
+ result = acpi_add_single_object(&acpi_root, ACPI_ROOT_OBJECT,
+ ACPI_BUS_TYPE_DEVICE, &ops);
if (result)
goto Done;
/*
* Enumerate devices in the ACPI namespace.
*/
- result = acpi_bus_scan_fixed(acpi_root);
-
- /* EC region might be needed at bus_scan, so enable it now */
- acpi_boot_ec_enable();
+ result = acpi_bus_scan(acpi_root->handle, &ops);
if (!result)
- result = acpi_bus_scan(acpi_root, &ops);
+ result = acpi_bus_scan_fixed();
if (result)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
- Done:
+Done:
return result;
}
-
-subsys_initcall(acpi_scan_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff