The patch titled
pci pm: make more PCI PM core functionality available to drivers
has been added to the -mm tree. Its filename is
pci-pm-make-more-pci-pm-core-functionality-available-to-drivers.patch
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------------------------------------------------------
Subject: pci pm: make more PCI PM core functionality available to drivers
From: Rafael J. Wysocki <rjw@xxxxxxx>
Make more PCI PM core functionality available to drivers
* Export pci_pme_capable() so that it can be called directly by
drivers (for example, tg3 needs that).
* Move the state choosing part of pci_prepare_to_sleep() to a
separate function, pci_target_state(), that can be called directly
by drivers (for example, tg3 needs that).
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Cc: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/pci/pci.c | 35 +++++++++++++++++++++++++----------
include/linux/pci.h | 2 ++
2 files changed, 27 insertions(+), 10 deletions(-)
diff -puN drivers/pci/pci.c~pci-pm-make-more-pci-pm-core-functionality-available-to-drivers drivers/pci/pci.c
--- a/drivers/pci/pci.c~pci-pm-make-more-pci-pm-core-functionality-available-to-drivers
+++ a/drivers/pci/pci.c
@@ -1040,7 +1040,7 @@ int pci_set_pcie_reset_state(struct pci_
* @dev: PCI device to handle.
* @state: PCI state from which device will issue PME#.
*/
-static bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
+bool pci_pme_capable(struct pci_dev *dev, pci_power_t state)
{
if (!dev->pm_cap)
return false;
@@ -1123,18 +1123,11 @@ int pci_enable_wake(struct pci_dev *dev,
}
/**
- * pci_prepare_to_sleep - prepare PCI device for system-wide transition into
- * a sleep state
- * @dev: Device to handle.
*
- * Choose the power state appropriate for the device depending on whether
- * it can wake up the system and/or is power manageable by the platform
- * (PCI_D3hot is the default) and put the device into that state.
*/
-int pci_prepare_to_sleep(struct pci_dev *dev)
+pci_power_t pci_target_state(struct pci_dev *dev)
{
pci_power_t target_state = PCI_D3hot;
- int error;
if (platform_pci_power_manageable(dev)) {
/*
@@ -1161,7 +1154,7 @@ int pci_prepare_to_sleep(struct pci_dev
* to generate PME#.
*/
if (!dev->pm_cap)
- return -EIO;
+ return PCI_POWER_ERROR;
if (dev->pme_support) {
while (target_state
@@ -1170,6 +1163,26 @@ int pci_prepare_to_sleep(struct pci_dev
}
}
+ return target_state;
+}
+
+/**
+ * pci_prepare_to_sleep - prepare PCI device for system-wide transition into
+ * a sleep state
+ * @dev: Device to handle.
+ *
+ * Choose the power state appropriate for the device depending on whether
+ * it can wake up the system and/or is power manageable by the platform
+ * (PCI_D3hot is the default) and put the device into that state.
+ */
+int pci_prepare_to_sleep(struct pci_dev *dev)
+{
+ pci_power_t target_state = pci_target_state(dev);
+ int error;
+
+ if (target_state == PCI_POWER_ERROR)
+ return -EIO;
+
pci_enable_wake(dev, target_state, true);
error = pci_set_power_state(dev, target_state);
@@ -1920,7 +1933,9 @@ EXPORT_SYMBOL(pci_select_bars);
EXPORT_SYMBOL(pci_set_power_state);
EXPORT_SYMBOL(pci_save_state);
EXPORT_SYMBOL(pci_restore_state);
+EXPORT_SYMBOL(pci_pme_capable);
EXPORT_SYMBOL(pci_enable_wake);
+EXPORT_SYMBOL(pci_target_state);
EXPORT_SYMBOL(pci_prepare_to_sleep);
EXPORT_SYMBOL(pci_back_from_sleep);
EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);
diff -puN include/linux/pci.h~pci-pm-make-more-pci-pm-core-functionality-available-to-drivers include/linux/pci.h
--- a/include/linux/pci.h~pci-pm-make-more-pci-pm-core-functionality-available-to-drivers
+++ a/include/linux/pci.h
@@ -638,7 +638,9 @@ int pci_save_state(struct pci_dev *dev);
int pci_restore_state(struct pci_dev *dev);
int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
+bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
+pci_power_t pci_target_state(struct pci_dev *dev);
int pci_prepare_to_sleep(struct pci_dev *dev);
int pci_back_from_sleep(struct pci_dev *dev);
_
Patches currently in -mm which might be from rjw@xxxxxxx are
origin.patch
linux-next.patch
skge-adapt-skge-to-use-reworked-pci-pm.patch
pci-pm-make-more-pci-pm-core-functionality-available-to-drivers.patch
swsusp-provide-users-with-a-hint-about-the-no_console_suspend-option.patch
swsusp-provide-users-with-a-hint-about-the-no_console_suspend-option-fix.patch
pm-boot-time-suspend-selftest.patch
pm-boot-time-suspend-selftest-vs-linux-next.patch
pm-boot-time-suspend-selftest-update.patch
remove-include-linux-pm_legacyh.patch
pm-remove-definition-of-struct-pm_dev.patch
pm-remove-remaining-obsolete-definitions-from-pmh.patch
pm-remove-obsolete-piece-of-pm-documentation-rev-2.patch
pm-drop-unnecessary-includes-from-pmh.patch
pm-add-new-pm_event-codes-for-runtime-power-transitions.patch
pm-hibernation-simplify-memory-bitmap.patch
pm-serio-speed-up-resume.patch
pm-introduce-new-interfaces-schedule_work_on-and-queue_work_on.patch
pm-introduce-new-interfaces-schedule_work_on-and-queue_work_on-cleanup.patch
pm-schedule-sysrq-poweroff-on-boot-cpu.patch
pm-schedule-sysrq-poweroff-on-boot-cpu-fix.patch
pm-acpi-hibernation-utilize-hardware-signature.patch
pm-acpi-hibernation-utilize-hardware-signaturepatch-causes-build-error.patch
pm-acpi-pm-add-dmi-quirk-list-for-acpi-10-suspend-ordering.patch
pm-fix-try_to_freeze_taskss-use-of-do_div.patch
drivers-power-fix-platform-driver-hotplug-coldplug.patch
mfd-fix-platform-driver-hotplug-coldplug.patch
parport-fix-platform-driver-hotplug-coldplug.patch
kexec-jump.patch
kexec-jump-save-restore-device-state.patch
shrink_slab-handle-bad-shrinkers.patch
tg3-adapt-tg3-to-use-reworked-pci-pm-code.patch
sky2-adapt-sky2-to-use-reworked-pci-pm.patch
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