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authorBjorn Helgaas <bhelgaas@google.com>2014-09-12 17:36:29 -0400
committerBjorn Helgaas <bhelgaas@google.com>2014-09-12 22:01:38 -0400
commit5e3d234456e25f664e0755c23689173588f4ca9b (patch)
tree9c851a20e560d86c5b59bb4a3d376504587c4724 /drivers/pci
parentabbfec34e1df3073429cd6b0fad1c26635597799 (diff)
PCI: Shuffle pci-acpi.c functions to group them logically
Move code around to put all the ACPI power management stuff together and all the pieces related to ACPI methods (_CBA, _HPP, _HPX) together. No functional change. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci-acpi.c134
1 files changed, 67 insertions, 67 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index e514d50eaddc..6ebf8edc5f3c 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -18,73 +18,6 @@
18#include <linux/pm_qos.h> 18#include <linux/pm_qos.h>
19#include "pci.h" 19#include "pci.h"
20 20
21/**
22 * pci_acpi_wake_bus - Root bus wakeup notification fork function.
23 * @work: Work item to handle.
24 */
25static void pci_acpi_wake_bus(struct work_struct *work)
26{
27 struct acpi_device *adev;
28 struct acpi_pci_root *root;
29
30 adev = container_of(work, struct acpi_device, wakeup.context.work);
31 root = acpi_driver_data(adev);
32 pci_pme_wakeup_bus(root->bus);
33}
34
35/**
36 * pci_acpi_wake_dev - PCI device wakeup notification work function.
37 * @handle: ACPI handle of a device the notification is for.
38 * @work: Work item to handle.
39 */
40static void pci_acpi_wake_dev(struct work_struct *work)
41{
42 struct acpi_device_wakeup_context *context;
43 struct pci_dev *pci_dev;
44
45 context = container_of(work, struct acpi_device_wakeup_context, work);
46 pci_dev = to_pci_dev(context->dev);
47
48 if (pci_dev->pme_poll)
49 pci_dev->pme_poll = false;
50
51 if (pci_dev->current_state == PCI_D3cold) {
52 pci_wakeup_event(pci_dev);
53 pm_runtime_resume(&pci_dev->dev);
54 return;
55 }
56
57 /* Clear PME Status if set. */
58 if (pci_dev->pme_support)
59 pci_check_pme_status(pci_dev);
60
61 pci_wakeup_event(pci_dev);
62 pm_runtime_resume(&pci_dev->dev);
63
64 if (pci_dev->subordinate)
65 pci_pme_wakeup_bus(pci_dev->subordinate);
66}
67
68/**
69 * pci_acpi_add_bus_pm_notifier - Register PM notifier for root PCI bus.
70 * @dev: PCI root bridge ACPI device.
71 */
72acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev)
73{
74 return acpi_add_pm_notifier(dev, NULL, pci_acpi_wake_bus);
75}
76
77/**
78 * pci_acpi_add_pm_notifier - Register PM notifier for given PCI device.
79 * @dev: ACPI device to add the notifier for.
80 * @pci_dev: PCI device to check for the PME status if an event is signaled.
81 */
82acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
83 struct pci_dev *pci_dev)
84{
85 return acpi_add_pm_notifier(dev, &pci_dev->dev, pci_acpi_wake_dev);
86}
87
88phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle) 21phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
89{ 22{
90 acpi_status status = AE_NOT_EXIST; 23 acpi_status status = AE_NOT_EXIST;
@@ -346,6 +279,73 @@ int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp)
346} 279}
347EXPORT_SYMBOL_GPL(pci_get_hp_params); 280EXPORT_SYMBOL_GPL(pci_get_hp_params);
348 281
282/**
283 * pci_acpi_wake_bus - Root bus wakeup notification fork function.
284 * @work: Work item to handle.
285 */
286static void pci_acpi_wake_bus(struct work_struct *work)
287{
288 struct acpi_device *adev;
289 struct acpi_pci_root *root;
290
291 adev = container_of(work, struct acpi_device, wakeup.context.work);
292 root = acpi_driver_data(adev);
293 pci_pme_wakeup_bus(root->bus);
294}
295
296/**
297 * pci_acpi_wake_dev - PCI device wakeup notification work function.
298 * @handle: ACPI handle of a device the notification is for.
299 * @work: Work item to handle.
300 */
301static void pci_acpi_wake_dev(struct work_struct *work)
302{
303 struct acpi_device_wakeup_context *context;
304 struct pci_dev *pci_dev;
305
306 context = container_of(work, struct acpi_device_wakeup_context, work);
307 pci_dev = to_pci_dev(context->dev);
308
309 if (pci_dev->pme_poll)
310 pci_dev->pme_poll = false;
311
312 if (pci_dev->current_state == PCI_D3cold) {
313 pci_wakeup_event(pci_dev);
314 pm_runtime_resume(&pci_dev->dev);
315 return;
316 }
317
318 /* Clear PME Status if set. */
319 if (pci_dev->pme_support)
320 pci_check_pme_status(pci_dev);
321
322 pci_wakeup_event(pci_dev);
323 pm_runtime_resume(&pci_dev->dev);
324
325 if (pci_dev->subordinate)
326 pci_pme_wakeup_bus(pci_dev->subordinate);
327}
328
329/**
330 * pci_acpi_add_bus_pm_notifier - Register PM notifier for root PCI bus.
331 * @dev: PCI root bridge ACPI device.
332 */
333acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev)
334{
335 return acpi_add_pm_notifier(dev, NULL, pci_acpi_wake_bus);
336}
337
338/**
339 * pci_acpi_add_pm_notifier - Register PM notifier for given PCI device.
340 * @dev: ACPI device to add the notifier for.
341 * @pci_dev: PCI device to check for the PME status if an event is signaled.
342 */
343acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
344 struct pci_dev *pci_dev)
345{
346 return acpi_add_pm_notifier(dev, &pci_dev->dev, pci_acpi_wake_dev);
347}
348
349/* 349/*
350 * _SxD returns the D-state with the highest power 350 * _SxD returns the D-state with the highest power
351 * (lowest D-state number) supported in the S-state "x". 351 * (lowest D-state number) supported in the S-state "x".
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-22 07:48:24 -0400