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path: root/drivers/acpi/battery.c
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2008-04-29acpi: use non-racy method for proc entries creationDenis V. Lunev
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Add correct ->owner to proc_fops to fix reading/module unloading race. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Len Brown <lenb@kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-17ACPI: battery: Don't return -EFAIL on broken packages.Alexey Starikovskiy
Acer BIOS has a bug which is exposed when a dead battery is present. The package template that is used to describe battery status is over-written with sane values when the battery is live. But when the batter is dead, a bogus reference in the template is used. In this case, Linux returns a fault, when instead it should simply return that it doesn't know the missing value. http://bugzilla.kernel.org/show_bug.cgi?id=8573 http://bugzilla.kernel.org/show_bug.cgi?id=10202 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-05ACPI: battery: add sysfs serial numbermaximilian attems
egrep serial /proc/acpi/battery/BAT0/info serial number: 32090 serial number can tell you from the imminent danger of beeing set on fire. Signed-off-by: maximilian attems <max@stro.at> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-01-01ACPI: Make sysfs interface in ACPI power optional.Alexey Starikovskiy
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9494 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-06ACPI: battery: fix ACPI battery technology reportingAndrey Borzenkov
At least some systems report technology information with trailing spaces: {pts/1}% cat -E /var/tmp/bat/2.6.23 | grep type battery type: Li-ION $ Use strncasecmp to compare model string to skip trailing part Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-11-20Pull procfs-default into release branchLen Brown
Conflicts: drivers/acpi/sbs.c Signed-off-by: Len Brown <len.brown@intel.com>
2007-11-20Pull battery into release branchLen Brown
2007-11-19ACPI: Split out control for /proc/acpi entries from battery, ac, and sbs.Alexey Starikovskiy
Introduce new ACPI_PROCFS_POWER (default Yes) config option and move procfs code in battery, ac, and sbs drivers under it. This is done to allow ACPI_PROCFS to be default No. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-11-13ACPI: Battery: remove cycle from battery removal.Alexey Starikovskiy
get_property() should not call battery_update(), it also should call get_status() only if battery is present to avoid cycle and oops. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by: Johannes Weiner <hannes@saeurebad.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-08ACPI: Always return valid 'status' from acpi_battery_get_property()Roland Dreier
If a battery is at a critical charge level and not being charged or discharged, then the ACPI _BST method will return a state of 4, and the current acpi_battery_get_property() code will not set any property value for POWER_SUPPLY_PROP_STATUS. This will cause an oops in power_supply_show_property() when it reads off the end of the status_text array. This actually was causing a 100% reproducible crash on boot on my laptop with two batteries, when one battery was completely drained and the laptop was not plugged in. Fix this by making sure acpi_battery_get_property() returns POWER_SUPPLY_STATUS_UNKNOWN for any battery state it doesn't already handle explicitly. There doesn't seem to be any status enum value defined that makes more sense than 'unknown' for a battery at a critical charge level. Signed-off-by: Roland Dreier <roland@digitalvampire.org> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <lenb@t61.(none)>
2007-10-29ACPI: Battery: Allow extract string from integerAlexey Starikovskiy
Some machines return integer instead of expected string. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Tested-by: Frans Pop <elendil@planet.nl> Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-29ACPI: battery: Support for non-spec name for LiIon technologyAlexey Starikovskiy
Support Li-Ion as possible name for technology. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-29ACPI: battery: register power_supply subdevice only when battery is presentAndrey Borzenkov
Make sure no power_supply object is present unless we actualy detect presence of battery. This fixes ghost batteries detected by HAL Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-25ACPI: battery: Update battery information upon sysfs read.Alexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-25ACPI: battery: remove dead codeAdrian Bunk
After commit f1d4661abe05d0a2c014166042d15ed8b69ae8f2 this was dead code. Spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-27ACPI: Battery: add sysfs alarmAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-27ACPI: Battery: Add sysfs supportAlexey Starikovskiy
Refer to Documentation/power_supply_class.txt for interface description. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-27ACPI: Battery: Misc clean-ups, no functional changesAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-27ACPI: Battery: simplify update schemeAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-27ACPI: Battery: don't use acpi_extract_package()Alexey Starikovskiy
acpi_extract_package() creates more problems with memory management than it solves as helper for package handling. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25Pull events into release branchLen Brown
Conflicts: drivers/acpi/video.c Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-23ACPI: Schedule /proc/acpi/event for removalLen Brown
Schedule /proc/acpi/event for removal in 6 months. Re-name acpi_bus_generate_event() to acpi_bus_generate_proc_event() to make sure there is no confusion that it is for /proc/acpi/event only. Add CONFIG_ACPI_PROC_EVENT to allow removal of /proc/acpi/event. There is no functional change if CONFIG_ACPI_PROC_EVENT=y Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-23ACPI: don't duplicate input events on netlinkZhang Rui
The previous events patch added a netlink event for every user of the legacy /proc/acpi/event interface. However, some users of /proc/acpi/event are really input events, and they already report their events via the input layer. Introduce a new interface, acpi_bus_generate_netlink_event(), which is explicitly called by devices that want to repoprt events via netlink. This allows the input-like events to opt-out of generating netlink events. In summary: events that are sent via netlink: ac/battery/sbs thermal processor thinkpad_acpi dock/bay events that are sent via input layer: button video hotkey thinkpad_acpi hotkey asus_acpi/asus-laptop hotkey sonypi/sonylaptop Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-15Revert "ACPI: Battery: Synchronize battery operations."Len Brown
This reverts commit 3bd92ba19a89fe61ebf58804f9c8675372f50c1c. It is no longer necessary, and it opens up a race. Acked-by: Vladimir Lebedev <vladimir.p.lebedev@gmail.com> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-03ACPI: Battery: Synchronize battery operations.Alexey Starikovskiy
http://bugzilla.kernel.org/show_bug.cgi?id=8768 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-07-23ACPI: autoload modules - Create __mod_acpi_device_table symbol for all ACPI ↵Thomas Renninger
drivers modpost is going to use these to create e.g. acpi:ACPI0001 in modules.alias. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-11ACPI: battery: syntax cleanupAlexey Starikovskiy
In response to review comments from Andrew Morton Signed-off-by: Alexey Starikovskiy <aystarik@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21process reading battery status hangsVladimir Lebedev
http://bugzilla.kernel.org/show_bug.cgi?id=8351 Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07ACPI: battery: LindentVladimir Lebedev
Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07ACPI: Cache battery status instead of re-evaluating AMLVladimir Lebedev
/proc exports _BST in a single file, and _BST is re-evaulated whenever that file is read. Sometimes user-space reads this file frequently, and on some systems _BST takes a long time to evaluate due to a slow EC. Further, when we move to sysfs, the values returned from _BST will be in multiple files, and evaluating _BST for each file read would make matters worse. Here code is added to support caching the results of _BST. A new module parameter "update_time" tells how many seconds the cached _BST should be used before it is re-evaluated. Currently, update_time defaults to 0, and so the existing behaviour of re-evaluating on each read retained. Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07ACPI: battery: make internal names consistent with battery "state"Vladimir Lebedev
Cleanup -- No functional changes. Battery state is currently exported in a proc "state" file. Update associated #defines and routines to be consistent. Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16Pull bugzilla-7200 into release branchLen Brown
2007-02-12ACPI: delete extra #defines in /drivers/acpi/ driversLen Brown
Cosmetic only. Except in a single case, #define ACPI_*_DRIVER_NAME were invoked 0 or 1 times. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: fix acpi_driver.name usageLen Brown
It was erroneously used as a description rather than a name. ie. turn this: lenb@se7525gp2:/sys> ls bus/acpi/drivers ACPI AC Adapter Driver ACPI Embedded Controller Driver ACPI Power Resource Driver ACPI Battery Driver ACPI Fan Driver ACPI Processor Driver ACPI Button Driver ACPI PCI Interrupt Link Driver ACPI Thermal Zone Driver ACPI container driver ACPI PCI Root Bridge Driver hpet into this: lenb@se7525gp2:~> ls /sys/bus/acpi/drivers ac battery button container ec fan hpet pci_link pci_root power processor thermal Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: clean up ACPI_MODULE_NAME() useLen Brown
cosmetic only Make "module name" actually match the file name. Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care. Fix indentation where Lindent did get confused. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-10ACPI: battery: check for battery present on /proc/battery accessVladimir Lebedev
http://bugzilla.kernel.org/show_bug.cgi?id=7200 Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-03Pull sysfs into test branchLen Brown
Conflicts: Documentation/feature-removal-schedule.txt include/acpi/acpi_drivers.h Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-20ACPI: replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-16Pull style into test branchLen Brown
Conflicts: drivers/acpi/button.c drivers/acpi/ec.c drivers/acpi/osl.c drivers/acpi/sbs.c
2006-12-15ACPI: add ACPI bus_type for driver modelPatrick Mochel
Add ACPI bus_type for Linux driver model. 1. .shutdown method is added into acpi_driver.ops needed by bus_type operations. 2. remove useless parameter 'int state' in .resume method. 3. change parameter 'int state' to 'pm_message_t state' in .suspend method. Note: The new .uevent method mark ACPI drivers by PNPID instead of by name. Udev script needs to look for "HWID=" or "COMPTID=" to load ACPI drivers as a result. Signed-off-by: Li Shaohua <shaohua.li@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: check battery status on resume for un/plug events during sleepJiri Kosina
Add ->resume method to the ACPI battery handler to check if the battery state has changed during sleep. If yes, update the ACPI internal data structures for benefit of /proc/acpi/battery/. Signed-off-by: Jiri Kosina <jikos@jikos.cz> Cc: Stefan Seyfried <seife@suse.de> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: Remove unnecessary from/to-void* and to-void casts in drivers/acpiJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Len Brown <len.brown@intel.com>
2006-08-15ACPI: fix boot with acpi=offPavel Machek
Fix acpi_ac/battery boot with acpi=off Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-10ACPI: add 'const' to several ACPI file_operationsArjan van de Ven
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-01Pull smart-battery into release branchLen Brown
2006-07-01ACPI: add support for Smart BatteryRich Townsend
Most batteries today are ACPI "Control Method" batteries, but some models ship with the older "Smart Battery" that requires this code. Rich Townsend and Bruno Ducrot were the original authors. Vladimir Lebedev updated to run on latest kernel. http://bugzilla.kernel.org/show_bug.cgi?id=3734 Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-01ACPI: handle battery notify event on broken BIOSVladimir Lebedev
http://bugzilla.kernel.org/show_bug.cgi?id=3241 Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-01Pull acpi_device_handle_cleanup into release branchLen Brown
2006-06-30ACPI: delete acpi_os_free(), use kfree() directlyLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-30ACPI: battery: Remove unneeded acpi_handle from driver.Patrick Mochel
Signed-off-by: Patrick Mochel <mochel@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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