Merge branch 'pci/yinghai-survey-resources+acpi-scan' into next

* pci/yinghai-survey-resources+acpi-scan:
  ACPI / scan: Treat power resources in a special way
  ACPI: Remove unused struct acpi_pci_root.id member
  ACPI: Drop ACPI device .bind() and .unbind() callbacks
  ACPI / PCI: Move the _PRT setup and cleanup code to pci-acpi.c
  ACPI / PCI: Rework the setup and cleanup of device wakeup
  ACPI: Add .setup() and .cleanup() callbacks to struct acpi_bus_type
  ACPI: Make acpi_bus_scan() and acpi_bus_add() take only one argument
  ACPI: Replace ACPI device add_type field with a match_driver flag
  ACPI: Drop the second argument of acpi_bus_scan()
  ACPI: Remove the arguments of acpi_bus_add() that are not used
  ACPI: Remove acpi_start_single_object() and acpi_bus_start()
  ACPI / PCI: Fold acpi_pci_root_start() into acpi_pci_root_add()
  ACPI: Change the ordering of acpi_bus_check_add()
  ACPI: Replace struct acpi_bus_ops with enum type
  ACPI: Reduce the usage of struct acpi_bus_ops
  ACPI: Make acpi_bus_add() and acpi_bus_start() visibly different
  ACPI: Change the ordering of PCI root bridge driver registrarion
  ACPI: Separate adding ACPI device objects from probing ACPI drivers

6 files changed, 73 insertions, 63 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 3d6d4fd1e3c5..91b5ad875c53 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -734,15 +734,9 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
  */
 static int acpiphp_bus_add(struct acpiphp_func *func)
 {
-	acpi_handle phandle;
-	struct acpi_device *device, *pdevice;
+	struct acpi_device *device;
 	int ret_val;
 
-	acpi_get_parent(func->handle, &phandle);
-	if (acpi_bus_get_device(phandle, &pdevice)) {
-		dbg("no parent device, assuming NULL\n");
-		pdevice = NULL;
-	}
 	if (!acpi_bus_get_device(func->handle, &device)) {
 		dbg("bus exists... trim\n");
 		/* this shouldn't be in here, so remove
@@ -752,16 +746,13 @@ static int acpiphp_bus_add(struct acpiphp_func *func)
 		dbg("acpi_bus_trim return %x\n", ret_val);
 	}
 
-	ret_val = acpi_bus_add(&device, pdevice, func->handle,
-		ACPI_BUS_TYPE_DEVICE);
-	if (ret_val) {
-		dbg("error adding bus, %x\n",
-			-ret_val);
-		goto acpiphp_bus_add_out;
-	}
-	ret_val = acpi_bus_start(device);
+	ret_val = acpi_bus_add(func->handle);
+	if (!ret_val)
+		ret_val = acpi_bus_get_device(func->handle, &device);
+
+	if (ret_val)
+		dbg("error adding bus, %x\n", -ret_val);
 
-acpiphp_bus_add_out:
 	return ret_val;
 }
 
@@ -1130,8 +1121,7 @@ static int acpiphp_configure_bridge (acpi_handle handle)
 
 static void handle_bridge_insertion(acpi_handle handle, u32 type)
 {
-	struct acpi_device *device, *pdevice;
-	acpi_handle phandle;
+	struct acpi_device *device;
 
 	if ((type != ACPI_NOTIFY_BUS_CHECK) &&
 			(type != ACPI_NOTIFY_DEVICE_CHECK)) {
@@ -1139,17 +1129,15 @@ static void handle_bridge_insertion(acpi_handle handle, u32 type)
 		return;
 	}
 
-	acpi_get_parent(handle, &phandle);
-	if (acpi_bus_get_device(phandle, &pdevice)) {
-		dbg("no parent device, assuming NULL\n");
-		pdevice = NULL;
-	}
-	if (acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE)) {
+	if (acpi_bus_add(handle)) {
 		err("cannot add bridge to acpi list\n");
 		return;
 	}
-	if (!acpiphp_configure_bridge(handle) &&
-		!acpi_bus_start(device))
+	if (acpi_bus_get_device(handle, &device)) {
+		err("ACPI device object missing\n");
+		return;
+	}
+	if (!acpiphp_configure_bridge(handle))
 		add_bridge(handle);
 	else
 		err("cannot configure and start bridge\n");
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index f64ca92253da..f3c419256d2a 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -412,7 +412,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
 	if (SN_ACPI_BASE_SUPPORT() && ssdt) {
 		unsigned long long adr;
 		struct acpi_device *pdevice;
-		struct acpi_device *device;
 		acpi_handle phandle;
 		acpi_handle chandle = NULL;
 		acpi_handle rethandle;
@@ -448,8 +447,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
 			if (ACPI_SUCCESS(ret) &&
 			    (adr>>16) == (slot->device_num + 1)) {
 
-				ret = acpi_bus_add(&device, pdevice, chandle,
-						   ACPI_BUS_TYPE_DEVICE);
+				ret = acpi_bus_add(chandle);
 				if (ACPI_FAILURE(ret)) {
 					printk(KERN_ERR "%s: acpi_bus_add "
 					       "failed (0x%x) for slot %d "
@@ -457,8 +455,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
 					       ret, (int)(adr>>16),
 					       (int)(adr&0xffff));
 					/* try to continue on */
-				} else {
-					acpi_bus_start(device);
 				}
 			}
 		}
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 1af4008182fd..42736e213f25 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -283,7 +283,6 @@ static struct pci_platform_pm_ops acpi_pci_platform_pm = {
 	.is_manageable = acpi_pci_power_manageable,
 	.set_state = acpi_pci_set_power_state,
 	.choose_state = acpi_pci_choose_state,
-	.can_wakeup = acpi_pci_can_wakeup,
 	.sleep_wake = acpi_pci_sleep_wake,
 	.run_wake = acpi_pci_run_wake,
 };
@@ -321,10 +320,67 @@ static int acpi_pci_find_root_bridge(struct device *dev, acpi_handle *handle)
 	return 0;
 }
 
+static void pci_acpi_setup(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	acpi_handle handle = ACPI_HANDLE(dev);
+	struct acpi_device *adev;
+	acpi_status status;
+	acpi_handle dummy;
+
+	/*
+	 * Evaluate and parse _PRT, if exists.  This code allows parsing of
+	 * _PRT objects within the scope of non-bridge devices.  Note that
+	 * _PRTs within the scope of a PCI bridge assume the bridge's
+	 * subordinate bus number.
+	 *
+	 * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
+	 */
+	status = acpi_get_handle(handle, METHOD_NAME__PRT, &dummy);
+	if (ACPI_SUCCESS(status)) {
+		unsigned char bus;
+
+		bus = pci_dev->subordinate ?
+			pci_dev->subordinate->number : pci_dev->bus->number;
+		acpi_pci_irq_add_prt(handle, pci_domain_nr(pci_dev->bus), bus);
+	}
+
+	acpi_power_resource_register_device(dev, handle);
+	if (acpi_bus_get_device(handle, &adev) || !adev->wakeup.flags.valid)
+		return;
+
+	device_set_wakeup_capable(dev, true);
+	acpi_pci_sleep_wake(pci_dev, false);
+
+	pci_acpi_add_pm_notifier(adev, pci_dev);
+	if (adev->wakeup.flags.run_wake)
+		device_set_run_wake(dev, true);
+}
+
+static void pci_acpi_cleanup(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	acpi_handle handle = ACPI_HANDLE(dev);
+	struct acpi_device *adev;
+
+	if (!acpi_bus_get_device(handle, &adev) && adev->wakeup.flags.valid) {
+		device_set_wakeup_capable(dev, false);
+		device_set_run_wake(dev, false);
+		pci_acpi_remove_pm_notifier(adev);
+	}
+	acpi_power_resource_unregister_device(dev, handle);
+
+	if (pci_dev->subordinate)
+		acpi_pci_irq_del_prt(pci_domain_nr(pci_dev->bus),
+				     pci_dev->subordinate->number);
+}
+
 static struct acpi_bus_type acpi_pci_bus = {
 	.bus = &pci_bus_type,
 	.find_device = acpi_pci_find_device,
 	.find_bridge = acpi_pci_find_root_bridge,
+	.setup = pci_acpi_setup,
+	.cleanup = pci_acpi_cleanup,
 };
 
 static int __init acpi_pci_init(void)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index a2f30394c091..89dc8ac096ba 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -450,7 +450,7 @@ static struct pci_platform_pm_ops *pci_platform_pm;
 int pci_set_platform_pm(struct pci_platform_pm_ops *ops)
 {
 	if (!ops->is_manageable || !ops->set_state || !ops->choose_state
-	    || !ops->sleep_wake || !ops->can_wakeup)
+	    || !ops->sleep_wake)
 		return -EINVAL;
 	pci_platform_pm = ops;
 	return 0;
@@ -473,11 +473,6 @@ static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev)
 			pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR;
 }
 
-static inline bool platform_pci_can_wakeup(struct pci_dev *dev)
-{
-	return pci_platform_pm ? pci_platform_pm->can_wakeup(dev) : false;
-}
-
 static inline int platform_pci_sleep_wake(struct pci_dev *dev, bool enable)
 {
 	return pci_platform_pm ?
@@ -1984,25 +1979,6 @@ void pci_pm_init(struct pci_dev *dev)
 	}
 }
 
-/**
- * platform_pci_wakeup_init - init platform wakeup if present
- * @dev: PCI device
- *
- * Some devices don't have PCI PM caps but can still generate wakeup
- * events through platform methods (like ACPI events).  If @dev supports
- * platform wakeup events, set the device flag to indicate as much.  This
- * may be redundant if the device also supports PCI PM caps, but double
- * initialization should be safe in that case.
- */
-void platform_pci_wakeup_init(struct pci_dev *dev)
-{
-	if (!platform_pci_can_wakeup(dev))
-		return;
-
-	device_set_wakeup_capable(&dev->dev, true);
-	platform_pci_sleep_wake(dev, false);
-}
-
 static void pci_add_saved_cap(struct pci_dev *pci_dev,
 	struct pci_cap_saved_state *new_cap)
 {
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index e8518292826f..adfd172c5b9b 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -43,9 +43,6 @@ int pci_probe_reset_function(struct pci_dev *dev);
  *                platform; to be used during system-wide transitions from a
  *                sleeping state to the working state and vice versa
  *
- * @can_wakeup: returns 'true' if given device is capable of waking up the
- *              system from a sleeping state
- *
  * @sleep_wake: enables/disables the system wake up capability of given device
  *
  * @run_wake: enables/disables the platform to generate run-time wake-up events
@@ -59,7 +56,6 @@ struct pci_platform_pm_ops {
 	bool (*is_manageable)(struct pci_dev *dev);
 	int (*set_state)(struct pci_dev *dev, pci_power_t state);
 	pci_power_t (*choose_state)(struct pci_dev *dev);
-	bool (*can_wakeup)(struct pci_dev *dev);
 	int (*sleep_wake)(struct pci_dev *dev, bool enable);
 	int (*run_wake)(struct pci_dev *dev, bool enable);
 };
@@ -74,7 +70,6 @@ extern void pci_wakeup_bus(struct pci_bus *bus);
 extern void pci_config_pm_runtime_get(struct pci_dev *dev);
 extern void pci_config_pm_runtime_put(struct pci_dev *dev);
 extern void pci_pm_init(struct pci_dev *dev);
-extern void platform_pci_wakeup_init(struct pci_dev *dev);
 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
 void pci_free_cap_save_buffers(struct pci_dev *dev);
 
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 6186f03d84f3..2dcd22d9c816 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1280,7 +1280,6 @@ static void pci_init_capabilities(struct pci_dev *dev)
 
 	/* Power Management */
 	pci_pm_init(dev);
-	platform_pci_wakeup_init(dev);
 
 	/* Vital Product Data */
 	pci_vpd_pci22_init(dev);