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* PM: Allow drivers to allocate memory from .prepare() callbacks safelyRafael J. Wysocki2011-05-172-33/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | If device drivers allocate substantial amounts of memory (above 1 MB) in their hibernate .freeze() callbacks (or in their legacy suspend callbcks during hibernation), the subsequent creation of hibernate image may fail due to the lack of memory. This is the case, because the drivers' .freeze() callbacks are executed after the hibernate memory preallocation has been carried out and the preallocated amount of memory may be too small to cover the new driver allocations. Unfortunately, the drivers' .prepare() callbacks also are executed after the hibernate memory preallocation has completed, so they are not suitable for allocating additional memory either. Thus the only way a driver can safely allocate memory during hibernation is to use a hibernate/suspend notifier. However, the notifiers are called before the freezing of user space and the drivers wanting to use them for allocating additional memory may not know how much memory needs to be allocated at that point. To let device drivers overcome this difficulty rework the hibernation sequence so that the memory preallocation is carried out after the drivers' .prepare() callbacks have been executed, so that the .prepare() callbacks can be used for allocating additional memory to be used by the drivers' .freeze() callbacks. Update documentation to match the new behavior of the code. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* Fix common misspellingsLucas De Marchi2011-03-315-9/+9
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* PM: Documentation/power/states.txt: fix repetitionAlexandre Courbot2011-03-151-6/+6
| | | | | | | Remove repetition of "called swsusp". Signed-off-by: Alexandre Courbot <gnurou@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Make system-wide PM and runtime PM treat subsystems consistentlyRafael J. Wysocki2011-03-152-23/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code handling system-wide power transitions (eg. suspend-to-RAM) can in theory execute callbacks provided by the device's bus type, device type and class in each phase of the power transition. In turn, the runtime PM core code only calls one of those callbacks at a time, preferring bus type callbacks to device type or class callbacks and device type callbacks to class callbacks. It seems reasonable to make them both behave in the same way in that respect. Moreover, even though a device may belong to two subsystems (eg. bus type and device class) simultaneously, in practice power management callbacks for system-wide power transitions are always provided by only one of them (ie. if the bus type callbacks are defined, the device class ones are not and vice versa). Thus it is possible to modify the code handling system-wide power transitions so that it follows the core runtime PM code (ie. treats the subsystem callbacks as mutually exclusive). On the other hand, the core runtime PM code will choose to execute, for example, a runtime suspend callback provided by the device type even if the bus type's struct dev_pm_ops object exists, but the runtime_suspend pointer in it happens to be NULL. This is confusing, because it may lead to the execution of callbacks from different subsystems during different operations (eg. the bus type suspend callback may be executed during runtime suspend of the device, while the device type callback will be executed during system suspend). Make all of the power management code treat subsystem callbacks in a consistent way, such that: (1) If the device's type is defined (eg. dev->type is not NULL) and its pm pointer is not NULL, the callbacks from dev->type->pm will be used. (2) If dev->type is NULL or dev->type->pm is NULL, but the device's class is defined (eg. dev->class is not NULL) and its pm pointer is not NULL, the callbacks from dev->class->pm will be used. (3) If dev->type is NULL or dev->type->pm is NULL and dev->class is NULL or dev->class->pm is NULL, the callbacks from dev->bus->pm will be used provided that both dev->bus and dev->bus->pm are not NULL. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Kevin Hilman <khilman@ti.com> Reasoning-sounds-sane-to: Grant Likely <grant.likely@secretlab.ca> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* PM: Add support for device power domainsRafael J. Wysocki2011-03-151-1/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The platform bus type is often used to handle Systems-on-a-Chip (SoC) where all devices are represented by objects of type struct platform_device. In those cases the same "platform" device driver may be used with multiple different system configurations, but the actions needed to put the devices it handles into a low-power state and back into the full-power state may depend on the design of the given SoC. The driver, however, cannot possibly include all the information necessary for the power management of its device on all the systems it is used with. Moreover, the device hierarchy in its current form also is not suitable for representing this kind of information. The patch below attempts to address this problem by introducing objects of type struct dev_power_domain that can be used for representing power domains within a SoC. Every struct dev_power_domain object provides a sets of device power management callbacks that can be used to perform what's needed for device power management in addition to the operations carried out by the device's driver and subsystem. Namely, if a struct dev_power_domain object is pointed to by the pwr_domain field in a struct device, the callbacks provided by its ops member will be executed in addition to the corresponding callbacks provided by the device's subsystem and driver during all power transitions. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-and-acked-by: Kevin Hilman <khilman@ti.com>
* PM: Do not create wakeup sysfs files for devices that cannot wake upRafael J. Wysocki2011-03-151-10/+10
| | | | | | | | | | | | | | | | | Currently, wakeup sysfs attributes are created for all devices, regardless of whether or not they are wakeup-capable. This is excessive and complicates wakeup device identification from user space (i.e. to identify wakeup-capable devices user space has to read /sys/devices/.../power/wakeup for all devices and see if they are not empty). Fix this issue by avoiding to create wakeup sysfs files for devices that cannot wake up the system from sleep states (i.e. whose power.can_wakeup flags are unset during registration) and modify device_set_wakeup_capable() so that it adds (or removes) the relevant sysfs attributes if a device's wakeup capability status is changed. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Fix references to basic-pm-debugging.txt in drivers-testing.txtJon Mason2010-12-241-4/+4
| | | | | | | | | basic-pm-debugging.txt is located in Documentation/power/ not Documents/power/. Change the references in Documentation/power/drivers-testing.txt to reflect the location. Signed-off-by: Jon Mason <jon.mason@exar.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Add synchronous runtime interface for interrupt handlers (v3)Alan Stern2010-12-241-0/+31
| | | | | | | | | | | | | | | | | | | This patch (as1431c) makes the synchronous runtime-PM interface suitable for use in interrupt handlers. Subsystems can call the new pm_runtime_irq_safe() function to tell the PM core that a device's runtime_suspend and runtime_resume callbacks should be invoked with interrupts disabled and the spinlock held. This permits the pm_runtime_get_sync() and the new pm_runtime_put_sync_suspend() routines to be called from within interrupt handlers. When a device is declared irq-safe in this way, the PM core increments the parent's usage count, so the parent will never be runtime suspended. This prevents difficult situations in which an irq-safe device can't resume because it is forced to wait for its non-irq-safe parent. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Fix pm_runtime_suspended()Rafael J. Wysocki2010-12-161-2/+2
| | | | | | | | | | | | | | | There are some situations (e.g. in __pm_generic_call()), where pm_runtime_suspended() is used to decide whether or not to execute a device's (system) ->suspend() callback. The callback is not executed if pm_runtime_suspended() returns true, but it does so for devices that don't even support runtime PM, because the power.disable_depth device field is ignored by it. This leads to problems (i.e. devices are not suspened when they should), so rework pm_runtime_suspended() so that it returns false if the device's power.disable_depth field is different from zero. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: stable@kernel.org
* PM / OPP: Hide OPP configuration when SoCs do not provide an implementationMark Brown2010-11-111-0/+3
| | | | | | | | | | | | Since the OPP API is only useful with an appropraite SoC-specific implementation there is no point in offering the ability to enable the API on general systems. Provide an ARCH_HAS OPP Kconfig symbol which masks out the option unless selected by an implementation. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Nishanth Menon <nm@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Introduce library for device-specific OPPs (v7)Nishanth Menon2010-10-172-0/+377
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SoCs have a standard set of tuples consisting of frequency and voltage pairs that the device will support per voltage domain. These are called Operating Performance Points or OPPs. The actual definitions of OPP varies over silicon versions. For a specific domain, we can have a set of {frequency, voltage} pairs. As the kernel boots and more information is available, a default set of these are activated based on the precise nature of device. Further on operation, based on conditions prevailing in the system (such as temperature), some OPP availability may be temporarily controlled by the SoC frameworks. To implement an OPP, some sort of power management support is necessary hence this library depends on CONFIG_PM. Contributions include: Sanjeev Premi for the initial concept: http://patchwork.kernel.org/patch/50998/ Kevin Hilman for converting original design to device-based. Kevin Hilman and Paul Walmsey for cleaning up many of the function abstractions, improvements and data structure handling. Romit Dasgupta for using enums instead of opp pointers. Thara Gopinath, Eduardo Valentin and Vishwanath BS for fixes and cleanups. Linus Walleij for recommending this layer be made generic for usage in other architectures beyond OMAP and ARM. Mark Brown, Andrew Morton, Rafael J. Wysocki, Paul E. McKenney for valuable improvements. Discussions and comments from: http://marc.info/?l=linux-omap&m=126033945313269&w=2 http://marc.info/?l=linux-omap&m=125482970102327&w=2 http://marc.info/?t=125809247500002&r=1&w=2 http://marc.info/?l=linux-omap&m=126025973426007&w=2 http://marc.info/?t=128152609200064&r=1&w=2 http://marc.info/?t=128468723000002&r=1&w=2 incorporated. v1: http://marc.info/?t=128468723000002&r=1&w=2 Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Add sysfs attr for rechecking dev hash from PM traceJames Hogan2010-10-171-0/+7
| | | | | | | | | | | | | | | If the device which fails to resume is part of a loadable kernel module it won't be checked at startup against the magic number stored in the RTC. Add a read-only sysfs attribute /sys/power/pm_trace_dev_match which contains a list of newline separated devices (usually just the one) which currently match the last magic number. This allows the device which is failing to resume to be found after the modules are loaded again. Signed-off-by: James Hogan <james@albanarts.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Implement autosuspend supportAlan Stern2010-10-171-7/+183
| | | | | | | | | | | | | | | | | | | This patch (as1427) implements the "autosuspend" facility for runtime PM. A few new fields are added to the dev_pm_info structure and several new PM helper functions are defined, for telling the PM core whether or not a device uses autosuspend, for setting the autosuspend delay, and for marking periods of device activity. Drivers that do not want to use autosuspend can continue using the same helper functions as before; their behavior will not change. In addition, drivers supporting autosuspend can also call the old helper functions to get the old behavior. The details are all explained in Documentation/power/runtime_pm.txt and Documentation/ABI/testing/sysfs-devices-power. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Add no_callbacks flagAlan Stern2010-10-171-0/+37
| | | | | | | | | | | | | | | | | | | Some devices, such as USB interfaces, cannot be power-managed independently of their parents, i.e., they cannot be put in low power while the parent remains at full power. This patch (as1425) creates a new "no_callbacks" flag, which tells the PM core not to invoke the runtime-PM callback routines for the such devices but instead to assume that the callbacks always succeed. In addition, the non-debugging runtime-PM sysfs attributes for the devices are removed, since they are pretty much meaningless. The advantage of this scheme comes not so much from avoiding the callbacks themselves, but rather from the fact that without the need for a process context in which to run the callbacks, more work can be done in interrupt context. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Hibernate: Make default image size depend on total RAM sizeRafael J. Wysocki2010-10-171-1/+1
| | | | | | | | | | | The default hibernation image size is currently hard coded and euqal to 500 MB, which is not a reasonable default on many contemporary systems. Make it equal 2/5 of the total RAM size (this is slightly below the maximum, i.e. 1/2 of the total RAM size, and seems to be generally suitable). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: M. Vefa Bicakci <bicave@superonline.com>
* PM / Hibernate: Compress hibernation image with LZOBojan Smojver2010-10-171-1/+2
| | | | | | | | | | | | Compress hibernation image with LZO in order to save on I/O and therefore time to hibernate/thaw. [rjw: Added hibernate=nocompress command line option instead of just nocompress which would be confusing, fixed a couple of compiler warnings, fixed kerneldoc comments, minor cleanups.] Signed-off-by: Bojan Smojver <bojan@rexursive.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* regulator: Update e-mail address for Liam GirdwoodMark Brown2010-09-011-1/+1
| | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* Documentation: update broken web addresses.Justin P. Mattock2010-08-043-9/+8
| | | | | | | | | | | | | | | | | | Below you will find an updated version from the original series bunching all patches into one big patch updating broken web addresses that are located in Documentation/* Some of the addresses date as far far back as 1995 etc... so searching became a bit difficult, the best way to deal with these is to use web.archive.org to locate these addresses that are outdated. Now there are also some addresses pointing to .spec files some are located, but some(after searching on the companies site)where still no where to be found. In this case I just changed the address to the company site this way the users can contact the company and they can locate them for the users. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Cc: Paulo Marques <pmarques@grupopie.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Michael Neuling <mikey@neuling.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* update email addressPavel Machek2010-07-191-1/+1
| | | | | | | pavel@suse.cz no longer works, replace it with working address. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Merge branch 'linux-next' of ↵Linus Torvalds2010-05-211-266/+992
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (36 commits) PCI: hotplug: pciehp: Removed check for hotplug of display devices PCI: read memory ranges out of Broadcom CNB20LE host bridge PCI: Allow manual resource allocation for PCI hotplug bridges x86/PCI: make ACPI MCFG reserved error messages ACPI specific PCI hotplug: Use kmemdup PM/PCI: Update PCI power management documentation PCI: output FW warning in pci_read/write_vpd PCI: fix typos pci_device_dis/enable to pci_dis/enable_device in comments PCI quirks: disable msi on AMD rs4xx internal gfx bridges PCI: Disable MSI for MCP55 on P5N32-E SLI x86/PCI: irq and pci_ids patch for additional Intel Cougar Point DeviceIDs PCI: aerdrv: trivial cleanup for aerdrv_core.c PCI: aerdrv: trivial cleanup for aerdrv.c PCI: aerdrv: introduce default_downstream_reset_link PCI: aerdrv: rework find_aer_service PCI: aerdrv: remove is_downstream PCI: aerdrv: remove magical ROOT_ERR_STATUS_MASKS PCI: aerdrv: redefine PCI_ERR_ROOT_*_SRC PCI: aerdrv: rework do_recovery PCI: aerdrv: rework get_e_source() ...
| * PM/PCI: Update PCI power management documentationRafael J. Wysocki2010-05-181-266/+992
| | | | | | | | | | | | | | | | | | | | | | I power management document, Documentation/power/pci.txt, is outdated and partially inaccurate. It also is missing some important information about the power management of PCI device. Rewrite it to make it more up to date and more complete. Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-203-9/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
| * | Documentation/: it's -> its where appropriateFrancis Galiegue2010-04-233-9/+9
| |/ | | | | | | | | | | | | | | Fix obvious cases of "it's" being used when "its" was meant. Signed-off-by: Francis Galiegue <fgaliegue@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | PM QOS updateMark Gross2010-05-101-23/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the string based list management to a handle base implementation to help with the hot path use of pm-qos, it also renames much of the API to use "request" as opposed to "requirement" that was used in the initial implementation. I did this because request more accurately represents what it actually does. Also, I added a string based ABI for users wanting to use a string interface. So if the user writes 0xDDDDDDDD formatted hex it will be accepted by the interface. (someone asked me for it and I don't think it hurts anything.) This patch updates some documentation input I got from Randy. Signed-off-by: markgross <mgross@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | PM / Hibernate: document open(/dev/snapshot) side effectsPavel Machek2010-05-101-0/+4
| | | | | | | | | | | | | | | | | | | | Opening and closing /dev/snapshot causes the kernel to carry out some hibernate preparations that should be documented. [rjw: Added the changelog.] Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | PM: Improve device power management documentAlan Stern2010-05-101-428/+383
| | | | | | | | | | | | | | | | Improve the device power management document after it's been updated by the previous patch. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | PM: Update device power management documentRafael J. Wysocki2010-05-101-267/+431
|/ | | | | | | | | The device PM document, Documentation/power/devices.txt, is badly outdated and requires total rework to fit the current design of the PM framework. Make it more up to date. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
* Merge branch 'for-next' into for-linusJiri Kosina2010-03-081-1/+1
|\ | | | | | | | | | | | | | | | | Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
| * doc: fix leve -> level typo in pm-runtime docThadeu Lima de Souza Cascardo2010-02-051-1/+1
| | | | | | | | | | Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | PM: Provide generic subsystem-level callbacksRafael J. Wysocki2010-03-061-0/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | There are subsystems whose power management callbacks only need to invoke the callbacks provided by device drivers. Still, their system sleep PM callbacks should play well with the runtime PM callbacks, so that devices suspended at run time can be left in that state for a system sleep transition. Provide a set of generic PM callbacks for such subsystems and define convenience macros for populating dev_pm_ops structures. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | PM / Runtime: Document power.runtime_auto and related functionsRafael J. Wysocki2010-03-061-0/+28
|/ | | | | | | | | The power.runtime_auto device flag and the helper functions pm_runtime_allow() and pm_runtime_forbid() used to modify it are a part of the run-time power management framework and therefore they should be described in Documentation/power/runtime_pm.txt. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Runtime PM documentation updateAlan Stern2009-12-221-0/+50
| | | | | | | | | | This patch (as1318) updates the runtime PM documentation, adding a section discussing the interaction between runtime PM and system sleep. [rjw: Rebased and made it agree with the other updates better.] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM / Runtime: Use device type and device class callbacksRafael J. Wysocki2009-12-221-86/+87
| | | | | | | | | | | | | The power management of some devices is handled through device types and device classes rather than through bus types. Since these devices may also benefit from using the run-time power management core, extend it so that the device type and device class run-time PM callbacks can be taken into consideration by it if the bus type callback is not defined. Update the run-time PM core documentation to reflect this change. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-12-091-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits) tree-wide: fix misspelling of "definition" in comments reiserfs: fix misspelling of "journaled" doc: Fix a typo in slub.txt. inotify: remove superfluous return code check hdlc: spelling fix in find_pvc() comment doc: fix regulator docs cut-and-pasteism mtd: Fix comment in Kconfig doc: Fix IRQ chip docs tree-wide: fix assorted typos all over the place drivers/ata/libata-sff.c: comment spelling fixes fix typos/grammos in Documentation/edac.txt sysctl: add missing comments fs/debugfs/inode.c: fix comment typos sgivwfb: Make use of ARRAY_SIZE. sky2: fix sky2_link_down copy/paste comment error tree-wide: fix typos "couter" -> "counter" tree-wide: fix typos "offest" -> "offset" fix kerneldoc for set_irq_msi() spidev: fix double "of of" in comment comment typo fix: sybsystem -> subsystem ...
| * doc: fix regulator docs cut-and-pasteismDr. David Alan Gilbert2009-12-041-1/+1
| | | | | | | | | | | | | | | | Minor copy-and-pasteism in the regulator docs (against git from today): Signed-off-by: Dave Gilbert <linux@treblig.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | PM: Add flag for devices capable of generating run-time wake-up eventsRafael J. Wysocki2009-12-061-2/+5
| | | | | | | | | | | | | | | | | | Apparently, there are devices that can wake up the system from sleep states and yet are incapable of generating wake-up events at run time. Thus, introduce a flag indicating if given device is capable of generating run-time wake-up events. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | PM / Runtime: Make documentation of runtime_idle() agree with the codeRafael J. Wysocki2009-12-061-2/+3
|/ | | | | | | | | | Currently the ->runtime_idle() callback is documented as having no return value, but in fact it returns int. Although its return value is ignored at the PM core level, it may be used by bus type routines executing the drivers' ->runtime_idle() callbacks. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-by: Alan Stern <stern@rowland.harvard.edu>
* Merge git://git.infradead.org/battery-2.6Linus Torvalds2009-09-231-0/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/battery-2.6: power_supply: Add driver for the PMU on WM831x PMICs ds2760_battery: Fix integer overflow for time_to_empty_now wm97xx_battery: Convert to dev_pm_ops wm97xx_battery: Use irq to detect charger state wm97xx_battery: Use platform_data wm97xx-core: Pass platform_data to battery ds2760_battery: implement set_charged() feature power_supply: get_by_name and set_charged functionality power_supply: EXPORT_SYMBOL cleanups ds2760_battery: add current_accum module parameter ds2760_battery: handle full_active_uAh == 0 case correctly ds2760_battery: add rated_capacity module parameter ds2760_battery: export more features ds2760_battery: delay power supply registration wm8350_power: Implement charge type property power_supply: Add a charge_type property, and use it for olpc driver olpc_battery: Add an 'error' sysfs device that displays raw errors Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL"
| * Merge branch 'master' of ↵Anton Vorontsov2009-09-231-0/+378
| |\ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/power/wm97xx_battery.c
| * | power_supply: Add a charge_type property, and use it for olpc driverAndres Salomon2009-07-021-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new sysfs file called 'charge_type' which displays the type of charging (unknown, n/a, trickle charge, or fast charging). This allows things like battery diagnostics to determine what the battery/EC is doing without resorting to changing the 'status' sysfs output. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * | Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL"Andres Salomon2009-07-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 8efe444038a205e79b38b7ad03878824901849a8 and 4cbc76eadf56399cd11fb736b33c53aec9caab8c. Richard@laptop.org was apparently using CAPACITY_LEVEL for debugging battery/EC problems, and was upset that it was removed. This readds it. Conflicts: Documentation/power_supply_class.txt Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | regulator: Add some brief design documentationMark Brown2009-09-221-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | Provide some brief documentation of some of the design decisions that are made by the regulator API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | | regulator: fix typosWolfram Sang2009-09-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Fix a couple of typos I found while working with this subsystem. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | | regulator: update a filename in documentationWolfram Sang2009-09-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | | Fix some regulator documentationLinus Walleij2009-09-222-3/+4
| |/ |/| | | | | | | | | | | | | | | This fixes a spelling error and an API function signature mismatch in the regulator documentation. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* | PM: Introduce core framework for run-time PM of I/O devices (rev. 17)Rafael J. Wysocki2009-08-231-0/+378
|/ | | | | | | | | | | | | | | Introduce a core framework for run-time power management of I/O devices. Add device run-time PM fields to 'struct dev_pm_info' and device run-time PM callbacks to 'struct dev_pm_ops'. Introduce a run-time PM workqueue and define some device run-time PM helper functions at the core level. Document all these things. Special thanks to Alan Stern for his help with the design and multiple detailed reviews of the pereceding versions of this patch and to Magnus Damm for testing feedback. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Magnus Damm <damm@igel.co.jp>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-06-144-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (31 commits) trivial: remove the trivial patch monkey's name from SubmittingPatches trivial: Fix a typo in comment of addrconf_dad_start() trivial: usb: fix missing space typo in doc trivial: pci hotplug: adding __init/__exit macros to sgi_hotplug trivial: Remove the hyphen from git commands trivial: fix ETIMEOUT -> ETIMEDOUT typos trivial: Kconfig: .ko is normally not included in module names trivial: SubmittingPatches: fix typo trivial: Documentation/dell_rbu.txt: fix typos trivial: Fix Pavel's address in MAINTAINERS trivial: ftrace:fix description of trace directory trivial: unnecessary (void*) cast removal in sound/oss/msnd.c trivial: input/misc: Fix typo in Kconfig trivial: fix grammo in bus_for_each_dev() kerneldoc trivial: rbtree.txt: fix rb_entry() parameters in sample code trivial: spelling fix in ppc code comments trivial: fix typo in bio_alloc kernel doc trivial: Documentation/rbtree.txt: cleanup kerneldoc of rbtree.txt trivial: Miscellaneous documentation typo fixes trivial: fix typo milisecond/millisecond for documentation and source comments. ...
| * trivial: Miscellaneous documentation typo fixesMatt LaPlante2009-06-124-4/+4
| | | | | | | | | | | | | | Fix various typos in documentation txts. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | PM: Remove bus_type suspend_late()/resume_early() V2Magnus Damm2009-06-121-29/+5
|/ | | | | | | | | | | | Remove the ->suspend_late() and ->resume_early() callbacks from struct bus_type V2. These callbacks are legacy stuff at this point and since there seem to be no in-tree users we may as well remove them. New users should use dev_pm_ops. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* pm: document use of RTC in pm_traceFrans Pop2008-10-161-0/+18
| | | | | | | | | | | As pm_trace uses the system's hardware clock to save its magic value, users of that option should be warned that using this debug option will result in an incorrect system time after resume. Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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