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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-12 16:40:57 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-12 16:40:57 -0400
commit21ba0f88ae56da82a3a15fe54d729208b64c4f4b (patch)
tree17ce67f276fe3ea7284c3dc730bdd6a2ec7dfe2f /Documentation/power/pci.txt
parentdc690d8ef842b464f1c429a376ca16cb8dbee6ae (diff)
parent36e235901f90fb83215be43cbd8f1ca14661ea40 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (34 commits) PCI: Only build PCI syscalls on architectures that want them PCI: limit pci_get_bus_and_slot to domain 0 PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug failure PCI: hotplug: acpiphp: remove hot plug parameter write to PCI host bridge PCI: hotplug: acpiphp: fix slot poweroff problem on systems without _PS3 PCI: hotplug: pciehp: wait for 1 second after power off slot PCI: pci_set_power_state(): check for PM capabilities earlier PCI: cpci_hotplug: Convert to use the kthread API PCI: add pci_try_set_mwi PCI: pcie: remove SPIN_LOCK_UNLOCKED PCI: ROUND_UP macro cleanup in drivers/pci PCI: remove pci_dac_dma_... APIs PCI: pci-x-pci-express-read-control-interfaces cleanups PCI: Fix typo in include/linux/pci.h PCI: pci_ids, remove double or more empty lines PCI: pci_ids, add atheros and 3com_2 vendors PCI: pci_ids, reorder some entries PCI: i386: traps, change VENDOR to DEVICE PCI: ATM: lanai, change VENDOR to DEVICE PCI: Change all drivers to use pci_device->revision ...
Diffstat (limited to 'Documentation/power/pci.txt')
-rw-r--r--Documentation/power/pci.txt37
1 files changed, 0 insertions, 37 deletions
diff --git a/Documentation/power/pci.txt b/Documentation/power/pci.txt
index e00b099a4b86..dd8fe43888d3 100644
--- a/Documentation/power/pci.txt
+++ b/Documentation/power/pci.txt
@@ -164,7 +164,6 @@ struct pci_driver:
164 164
165 int (*suspend) (struct pci_dev *dev, pm_message_t state); 165 int (*suspend) (struct pci_dev *dev, pm_message_t state);
166 int (*resume) (struct pci_dev *dev); 166 int (*resume) (struct pci_dev *dev);
167 int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);
168 167
169 168
170suspend 169suspend
@@ -251,42 +250,6 @@ The driver should update the current_state field in its pci_dev structure in
251this function, except for PM-capable devices when pci_set_power_state is used. 250this function, except for PM-capable devices when pci_set_power_state is used.
252 251
253 252
254enable_wake
255-----------
256
257Usage:
258
259if (dev->driver && dev->driver->enable_wake)
260 dev->driver->enable_wake(dev,state,enable);
261
262This callback is generally only relevant for devices that support the PCI PM
263spec and have the ability to generate a PME# (Power Management Event Signal)
264to wake the system up. (However, it is possible that a device may support
265some non-standard way of generating a wake event on sleep.)
266
267Bits 15:11 of the PMC (Power Mgmt Capabilities) Register in a device's
268PM Capabilities describe what power states the device supports generating a
269wake event from:
270
271+------------------+
272| Bit | State |
273+------------------+
274| 11 | D0 |
275| 12 | D1 |
276| 13 | D2 |
277| 14 | D3hot |
278| 15 | D3cold |
279+------------------+
280
281A device can use this to enable wake events:
282
283 pci_enable_wake(dev,state,enable);
284
285Note that to enable PME# from D3cold, a value of 4 should be passed to
286pci_enable_wake (since it uses an index into a bitmask). If a driver gets
287a request to enable wake events from D3, two calls should be made to
288pci_enable_wake (one for both D3hot and D3cold).
289
290 253
291A reference implementation 254A reference implementation
292------------------------- 255-------------------------