summaryrefslogtreecommitdiff
path: root/drivers/acpi/glue.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/glue.c')
-rw-r--r--drivers/acpi/glue.c66
1 files changed, 49 insertions, 17 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 7a33a6d985f8..7cd0009e7ff3 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -17,6 +17,8 @@
#include <linux/rwsem.h>
#include <linux/acpi.h>
#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
#include <linux/platform_device.h>
#include "internal.h"
@@ -111,13 +113,10 @@ struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
return NULL;
list_for_each_entry(adev, &parent->children, node) {
- unsigned long long addr;
- acpi_status status;
+ acpi_bus_address addr = acpi_device_adr(adev);
int score;
- status = acpi_evaluate_integer(adev->handle, METHOD_NAME__ADR,
- NULL, &addr);
- if (ACPI_FAILURE(status) || addr != address)
+ if (!adev->pnp.type.bus_address || addr != address)
continue;
if (!ret) {
@@ -287,12 +286,13 @@ EXPORT_SYMBOL_GPL(acpi_unbind_one);
void acpi_device_notify(struct device *dev)
{
- struct acpi_bus_type *type = acpi_get_bus_type(dev);
struct acpi_device *adev;
int ret;
ret = acpi_bind_one(dev, NULL);
if (ret) {
+ struct acpi_bus_type *type = acpi_get_bus_type(dev);
+
if (!type)
goto err;
@@ -304,17 +304,26 @@ void acpi_device_notify(struct device *dev)
ret = acpi_bind_one(dev, adev);
if (ret)
goto err;
- }
- adev = ACPI_COMPANION(dev);
- if (dev_is_platform(dev))
- acpi_configure_pmsi_domain(dev);
+ if (type->setup) {
+ type->setup(dev);
+ goto done;
+ }
+ } else {
+ adev = ACPI_COMPANION(dev);
+
+ if (dev_is_pci(dev)) {
+ pci_acpi_setup(dev, adev);
+ goto done;
+ } else if (dev_is_platform(dev)) {
+ acpi_configure_pmsi_domain(dev);
+ }
+ }
- if (type && type->setup)
- type->setup(dev);
- else if (adev->handler && adev->handler->bind)
+ if (adev->handler && adev->handler->bind)
adev->handler->bind(dev);
+done:
acpi_handle_debug(ACPI_HANDLE(dev), "Bound to device %s\n",
dev_name(dev));
@@ -327,16 +336,39 @@ err:
void acpi_device_notify_remove(struct device *dev)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
- struct acpi_bus_type *type;
if (!adev)
return;
- type = acpi_get_bus_type(dev);
- if (type && type->cleanup)
- type->cleanup(dev);
+ if (dev_is_pci(dev))
+ pci_acpi_cleanup(dev, adev);
else if (adev->handler && adev->handler->unbind)
adev->handler->unbind(dev);
acpi_unbind_one(dev);
}
+
+int acpi_dev_turn_off_if_unused(struct device *dev, void *not_used)
+{
+ struct acpi_device *adev = to_acpi_device(dev);
+
+ /*
+ * Skip device objects with device IDs, because they may be in use even
+ * if they are not companions of any physical device objects.
+ */
+ if (adev->pnp.type.hardware_id)
+ return 0;
+
+ mutex_lock(&adev->physical_node_lock);
+
+ /*
+ * Device objects without device IDs are not in use if they have no
+ * corresponding physical device objects.
+ */
+ if (list_empty(&adev->physical_node_list))
+ acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
+
+ mutex_unlock(&adev->physical_node_lock);
+
+ return 0;
+}