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eb9d0fe40e
* Introduce function acpi_pm_device_sleep_wake() for enabling and disabling the system wake-up capability of devices that are power manageable by ACPI. * Introduce function acpi_bus_can_wakeup() allowing other (dependent) subsystems to check if ACPI is able to enable the system wake-up capability of given device. * Introduce callback .sleep_wake() in struct pci_platform_pm_ops and for the ACPI PCI 'driver' make it use acpi_pm_device_sleep_wake(). * Introduce callback .can_wakeup() in struct pci_platform_pm_ops and for the ACPI 'driver' make it use acpi_bus_can_wakeup(). * Move the PME# handlig code out of pci_enable_wake() and split it into two functions, pci_pme_capable() and pci_pme_active(), allowing the caller to check if given device is capable of generating PME# from given power state and to enable/disable the device's PME# functionality, respectively. * Modify pci_enable_wake() to use the new ACPI callbacks and the new PME#-related functions. * Drop the generic .platform_enable_wakeup() callback that is not used any more. * Introduce device_set_wakeup_capable() that will set the power.can_wakeup flag of given device. * Rework PCI device PM initialization so that, if given device is capable of generating wake-up events, either natively through the PME# mechanism, or with the help of the platform, its power.can_wakeup flag is set and its power.should_wakeup flag is unset as appropriate. * Make ACPI set the power.can_wakeup flag for devices found to be wake-up capable by it. * Make the ACPI wake-up code enable/disable GPEs for devices that have the wakeup.flags.prepared flag set (which means that their wake-up power has been enabled). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
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* pm_wakeup.h - Power management wakeup interface
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*
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* Copyright (C) 2008 Alan Stern
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LINUX_PM_WAKEUP_H
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#define _LINUX_PM_WAKEUP_H
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#ifndef _DEVICE_H_
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# error "please don't include this file directly"
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#endif
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#ifdef CONFIG_PM
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/* changes to device_may_wakeup take effect on the next pm state change.
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* by default, devices should wakeup if they can.
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*/
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static inline void device_init_wakeup(struct device *dev, int val)
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{
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dev->power.can_wakeup = dev->power.should_wakeup = !!val;
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}
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static inline void device_set_wakeup_capable(struct device *dev, int val)
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{
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dev->power.can_wakeup = !!val;
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}
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static inline int device_can_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup;
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}
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static inline void device_set_wakeup_enable(struct device *dev, int val)
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{
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dev->power.should_wakeup = !!val;
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}
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static inline int device_may_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup && dev->power.should_wakeup;
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}
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#else /* !CONFIG_PM */
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/* For some reason the next two routines work even without CONFIG_PM */
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static inline void device_init_wakeup(struct device *dev, int val)
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{
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dev->power.can_wakeup = !!val;
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}
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static inline int device_can_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup;
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}
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#define device_set_wakeup_enable(dev, val) do {} while (0)
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#define device_may_wakeup(dev) 0
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#endif /* !CONFIG_PM */
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#endif /* _LINUX_PM_WAKEUP_H */
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