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path: root/drivers/power
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2009-07-30Merge git://git.infradead.org/users/cbou/battery-2.6.31Linus Torvalds
* git://git.infradead.org/users/cbou/battery-2.6.31: Add ds2782 battery gas gauge driver olpc_battery: Ensure that the TRICKLE bit is checked olpc_battery: Fix up eeprom read function
2009-07-12wm97xx_batery: replace driver_data with dev_get_drvdata()Alexander Beregalov
direct access of driver_data is going away. Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-07-01Add ds2782 battery gas gauge driverRyan Mallon
This patch adds a driver for ds2782 battery devices. Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-07-01olpc_battery: Ensure that the TRICKLE bit is checkedAndres Salomon
There are times when the battery is present but trickle charging, and the EC sets only the TRICKLE bit. So we must check for the bit when we're checking the charging/present status. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-07-01olpc_battery: Fix up eeprom read functionAndres Salomon
The eeprom read function was placing values into the wrong place in 'buf'; we were starting from buf[off], rather than buf[0]. Also, the for loop that we were using was much uglier than it needed to be. This cleans it up a bit. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-06-09da9030_battery: Fix race between event handler and monitorMike Rapoport
There are cases when charging monitor and the event handler try to change the charger state simultaneously. For instance, a charger is connected to the system, there's the detection event and the event handler tries to enable charging. It is possible that the periodic charging monitor runs at the same time and it still thinks there's no external charger. So it tries to disable the charging. As the result, even if the conditions necessary to charge the battery hold, there will be no actual charging. The patch changes the event handler so that instead of enabling/ disabling the charger immediately it would rather make the monitor run. The monitor code then decides what should be the charger state. Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-06-09Add MAX17040 Fuel Gauge driverMinkyu Kang
The MAX17040 is a I2C interfaced Fuel Gauge systems for lithium-ion batteries This patch adds support the MAX17040 Fuel Gauge Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-06-08w1: ds2760_battery: add support for sleep mode featureDaniel Mack
This adds support for ds2760's sleep mode feature. With this feature enabled, the chip enters a deep sleep mode and disconnects from the battery when the w1 line is held down for more than 2 seconds. This new behaviour can be switched on and off using a new module parameter. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Acked-by: Matt Reimer <mreimer@vpop.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-06-08ds2760_battery: cleanups in ds2760_battery_probe()Daniel Mack
Removed struct ds2760_platform_data which wasn't defined anywhere. Indentation cleanups. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Acked-by: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-04-08Merge git://git.infradead.org/battery-2.6Linus Torvalds
* git://git.infradead.org/battery-2.6: pda_power: Add optional OTG transceiver and voltage regulator support pcf50633_charger: Remove unused mbc_set_status function pcf50633_charger: Enable periodic charging restart
2009-04-05Merge branch 'linus' into releaseLen Brown
Conflicts: arch/x86/kernel/cpu/cpufreq/longhaul.c Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-30trivial: Fix misspelling of "Celsius".Adam Buchbinder
A few comments say "Celcius"; this fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-27ACPI: battery: add power_{now,avg} properties to power_classAlexey Starikovskiy
ACPI has smart batteries, which work in units of energy and measure rate of (dis)charge as power, thus it is not appropriate to export it as a current_now. Current_now will still be exported to allow for userland applications to match. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-12ds2760_battery.c: fix division by zeroDaniel Mack
The 'battery remaining capacity' calculation in drivers/power/ds2760_battery.c lacks a parameter check to a division operation which causes the kernel to oops on my board. [ 21.233750] Division by zero in kernel. [ 21.237646] [<c002955c>] (__div0+0x0/0x20) from [<c012561c>] (Ldiv0+0x8/0x10) [ 21.244816] [<c01bef34>] (ds2760_battery_read_status+0x0/0x2a4) from [<c01bf3a4>] (ds2760_battery_get_property+0x30/0xdc) [ 21.255803] r8:c03a22c0 r7:c7886100 r6:00000009 r5:c782fe7c r4:c7886084 [ 21.262518] [<c01bf374>] (ds2760_battery_get_property+0x0/0xdc) from [<c01bde98>] (power_supply_show_property+0x48/0x114) [ 21.273480] r6:c7996000 r5:00000009 r4:00000000 [ 21.278111] [<c01bde50>] (power_supply_show_property+0x0/0x114) from [<c01be158>] (power_supply_uevent+0x188/0x280) [ 21.288537] r8:00000001 r7:c7886100 r6:c7996000 r5:000000b4 r4:00000000 [ 21.295222] [<c01bdfd0>] (power_supply_uevent+0x0/0x280) from [<c015c664>] (dev_uevent+0xd4/0x10c) [ 21.304199] [<c015c590>] (dev_uevent+0x0/0x10c) from [<c0128440>] (kobject_uevent_env+0x180/0x390) [ 21.313170] r5:00000000 r4:c78860ac [ 21.316725] [<c01282c0>] (kobject_uevent_env+0x0/0x390) from [<c0128664>] (kobject_uevent+0x14/0x18) [ 21.325850] [<c0128650>] (kobject_uevent+0x0/0x18) from [<c01bdc34>] (power_supply_changed_work+0x5c/0x70) [ 21.335506] [<c01bdbd8>] (power_supply_changed_work+0x0/0x70) from [<c004d290>] (run_workqueue+0xbc/0x144) [ 21.345167] r4:c7812040 [ 21.347716] [<c004d1d4>] (run_workqueue+0x0/0x144) from [<c004d94c>] (worker_thread+0xa8/0xbc) [ 21.356296] r7:c7812040 r6:c7820b00 r5:c782ffa4 r4:c7812048 [ 21.361957] [<c004d8a4>] (worker_thread+0x0/0xbc) from [<c0051008>] (kthread+0x5c/0x94) [ 21.369971] r7:00000000 r6:c004d8a4 r5:c7812040 r4:c782e000 [ 21.375612] [<c0050fac>] (kthread+0x0/0x94) from [<c00403d0>] (do_exit+0x0/0x688) Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Acked-by: Matt Reimer <mreimer@vpop.net> Acked-by: Anton Vorontsov <cbou@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-02pda_power: Add optional OTG transceiver and voltage regulator supportPhilipp Zabel
This patch allows machines to use an OTG transceiver driver instead of supplying a custom is_usb_online callback to check USB power. Also, in the case that the OTG transceiver handles charger control when connected to USB, a regulator named "ac_draw" can be supplied instead of the custom set_charge callback to control the charger when connected to AC. The check for (transceiver->state == OTG_STATE_B_PERIPHERAL) in otg_is_usb_online is probably too simple, I'm just using this with a peripheral only device and gpio_vbus + bq24022. I'm not sure which other OTG states can supply power. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-02-02pcf50633_charger: Remove unused mbc_set_status functionBalaji Rao
The 'pcf50633_mbc_set_status' function is unused, so remove it. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-02-02pcf50633_charger: Enable periodic charging restartBalaji Rao
The battery charger state machine switches into charging mode when the battery voltage falls below 96% of a battery float voltage. But the voltage drop in Li-ion batteries is marginal(1~2 %) till about 80% of its capacity - which means, after a BATFULL, charging won't be restarted until 80%. This work_struct function restarts charging at regular intervals to make sure the battery doesn't discharge too much. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-02-02pcf50633_charger: Fix typoBalaji Rao
container_of(psy, struct pcf50633_mbc, usb); should be container_of(psy, struct pcf50633_mbc, adapter); Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-01-26power_supply: pda_power: Don't request shared IRQs w/ IRQF_DISABLEDPhilipp Zabel
IRQF_DISABLED is not guaranteed for shared IRQs. I think power_changed_isr doesn't need it anyway, as it only fires a timer. This patch enables IRQF_SAMPLE_RANDOM instead. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-01-11power_supply: PCF50633 battery charger driverBalaji Rao
Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-06power-supply: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers
CC: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-04power_supply: Add Dialog DA9030 battery charger driverMike Rapoport
Driver for battery charger integrated into Dialog Semiconductor DA9030 PMIC Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-04power_supply: Add battery health reporting for WM8350Mark Brown
Implement support for reporting battery health in the WM8350 battery interface. Since we are now able to report this via the classs remove the diagnostics from the interrupt handler. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-04power_supply: Add cold to the POWER_SUPPLY_HEALTH report valuesMark Brown
Some systems are able to report problems with batteries being under temperature. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-04mfd: Switch WM8350 revision detection to a feature based modelMark Brown
Rather than check for chip revisions in the WM8350 drivers have the core code set flags for relevant differences. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-04power_supply: Add support for WM8350 PMUMark Brown
This patch adds support for the PMU provided by the WM8350 which implements battery, line and USB supplies including a battery charger. The hardware functions largely autonomously, with minimal software control required to initiate fast charging. Support for configuration of the USB supply is not yet implemented. This means that the hardware will remain in the mode configured at startup, by default limiting the current drawn from USB to 100mA. This driver was originally written by Liam Girdwood with subsequent updates for submission by Mark Brown. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2008-10-20Merge git://git.infradead.org/battery-2.6Linus Torvalds
* git://git.infradead.org/battery-2.6: bq27x00_battery: use unaligned access helper power_supply: fix dependency of tosa_battery power_supply: Support for Texas Instruments BQ27200 battery managers power_supply: Add function to return system-wide power state pda_power: Check and handle return value of set_irq_wake
2008-10-20x86: sysfs: kill owner field from attributeParag Warudkar
Tejun's commit 7b595756ec1f49e0049a9e01a1298d53a7faaa15 made sysfs attribute->owner unnecessary. But the field was left in the structure to ease the merge. It's been over a year since that change and it is now time to start killing attribute->owner along with its users - one arch at a time! This patch is attempt #1 to get rid of attribute->owner only for CONFIG_X86_64 or CONFIG_X86_32 . We will deal with other arches later on as and when possible - avr32 will be the next since that is something I can test. Compile (make allyesconfig / make allmodconfig / custom config) and boot tested. akpm: the idea is that we put the declaration of sttribute.owner inside `#ifndef CONFIG_X86'. But that proved to be too ambitious for now because new usages kept on turning up in subsystem trees. [akpm: remove the ifdef for now] Signed-off-by: Parag Warudkar <parag.lkml@gmail.com> Cc: Greg KH <greg@kroah.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tejun Heo <htejun@gmail.com> Cc: Len Brown <lenb@kernel.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-18Merge branch 'master' of ↵Anton Vorontsov
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/power/Makefile
2008-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits) UIO: Fix mapping of logical and virtual memory UIO: add automata sercos3 pci card support UIO: Change driver name of uio_pdrv UIO: Add alignment warnings for uio-mem Driver core: add bus_sort_breadthfirst() function NET: convert the phy_device file to use bus_find_device_by_name kobject: Cleanup kobject_rename and !CONFIG_SYSFS kobject: Fix kobject_rename and !CONFIG_SYSFS sysfs: Make dir and name args to sysfs_notify() const platform: add new device registration helper sysfs: use ilookup5() instead of ilookup5_nowait() PNP: create device attributes via default device attributes Driver core: make bus_find_device_by_name() more robust usb: turn dev_warn+WARN_ON combos into dev_WARN debug: use dev_WARN() rather than WARN_ON() in device_pm_add() debug: Introduce a dev_WARN() function sysfs: fix deadlock device model: Do a quickcheck for driver binding before doing an expensive check Driver core: Fix cleanup in device_create_vargs(). Driver core: Clarify device cleanup. ...
2008-10-16olpc: olpc_battery.c sparse endian annotationsHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Andres Salomon <dilinger@queued.net> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16device create: misc: convert device_create_drvdata to device_createGreg Kroah-Hartman
Now that device_create() has been audited, rename things back to the original call to be sane. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-10-12Fix Kconfig dependency for WM97xx battery driverLinus Torvalds
It needs the WM97xx touchscreen driver to be compiled in, not as a module. And it cannot itself be a module, due to some unfortunate interactions with platform data. Reported-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-02[ARM] 5248/1: wm97xx generic battery driverMarek Vašut
This patch adds generic battery driver for wm97xx chips. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-26bq27x00_battery: use unaligned access helperHarvey Harrison
Remove hand-rolled get_unaligned_be16, this points to a possible bug as bq27x00_read does another endian byteswap which sparse notices: drivers/power/bq27x00_battery.c:81:14: warning: cast to restricted __be16 Which should probably be checked. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-09-26power_supply: fix dependency of tosa_batteryDmitry Baryshkov
tosa_battery should also depend on wm97xx_ts as it uses dac-accessing functions from that module. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-09-01power_supply: Support for Texas Instruments BQ27200 battery managersRodolfo Giometti
These battery managers came in two different packages: one for I2C busses (BQ27200) and one for HDQ busses (BQ27000). This driver currently supports only the I2C chip version but the code is designed in order to easily allow the HDQ chip version integration. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: make things static, use kasprintf()] Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-09-01power_supply: Add function to return system-wide power stateMatthew Garrett
Certain drivers benefit from knowing whether the system is on ac or battery, for instance when determining which backlight registers to read. This adds a simple call to determine whether there's an online power supply other than any batteries. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-09-01pda_power: Check and handle return value of set_irq_wakeRobert Jarzmik
The recent change in commit 2db873211ba47ef704c301f9ecf4a33413a0b649 forces the calls enable_irq_wake() and disable_irq_wake() to be balanced. But if in pda_power_suspend() the call to enable_irq_wake() fails (because attached gpio cannot wake up the CPU), the corresponding disable_irq_wake will WARN(). Fix it by storing success/failure of enable_irq_wake(). Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-08-07[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-30Merge branch 'master' of /home/cbou/linux-2.6Anton Vorontsov
Conflicts: drivers/power/Kconfig drivers/power/Makefile
2008-07-25drivers/power: fix platform driver hotplug/coldplugKay Sievers
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf ("platform: prefix MODALIAS with "platform:"), the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable "power" drivers drivers, to re-enable auto loading. [dbrownell@users.sourceforge.net: one was missing] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-23Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (85 commits) [ARM] pxa: add base support for PXA930 Handheld Platform (aka SAAR) [ARM] pxa: add base support for PXA930 Evaluation Board (aka TavorEVB) [ARM] pxa: add base support for PXA930 (aka Tavor-P) [ARM] Update mach-types [ARM] pxa: make littleton to use the new smc91x platform data [ARM] pxa: make zylonite to use the new smc91x platform data [ARM] pxa: make mainstone to use the new smc91x platform data [ARM] pxa: make lubbock to use new smc91x platform data [NET] smc91x: prepare SMC_USE_PXA_DMA to be specified in platform data [NET] smc91x: prepare for SMC_IO_SHIFT to be a platform configurable variable [NET] smc91x: add SMC91X_NOWAIT flag to platform data [NET] smc91x: favor the use of SMC91X_USE_* instead of SMC_CAN_USE_* [NET] smc91x: remove "irq_flags" from "struct smc91x_platdata" [ARM] 5146/1: pxa2xx: convert all boards to call pxa2xx_transceiver_mode helper Support for LCD on e740 e750 e400 and e800 e-series PDAs E-series UDC support PXA UDC - allow use of inverted GPIO for pullup Add e350 support Fix broken e-series build E-series GPIO / IRQ definitions. ...
2008-07-21Driver Core: add ability for class_for_each_device to start in middle of listGreg Kroah-Hartman
This mirrors the functionality that driver_for_each_device has as well. We add a start variable, and all callers of the function are fixed up at the same time. The block layer will be using this new functionality in a follow-on patch. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-10[ARM] 5155/1: PalmTX battery monitorMarek Vašut
This patch adds battery monitoring driver for PalmTX. It can read voltage from the battery and temperature. It also monitors charging/discharging status. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-01power_supply: Sharp SL-6000 (tosa) batteries supportDmitry Baryshkov
This patch adds common battery interface support for Sharp SL-6000 (tosa). Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-06-10power_supply: Fix race in power_supply_ueventDmitry Baryshkov
Commit 54d29ad33e3483bcc7ca433a21cf294854e5154a (Power Supply: fix race in device_create) introduced a race in power_supply_uevent. Previously it checked that power_supply is available by checking for dev->driver_data. But now dev->driver_data is set before power_supply->dev is initialised. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-05-20Power Supply: fix race in device_createGreg Kroah-Hartman
There is a race from when a device is created with device_create() and then the drvdata is set with a call to dev_set_drvdata() in which a sysfs file could be open, yet the drvdata will be NULL, causing all sorts of bad things to happen. This patch fixes the problem by using the new function, device_create_drvdata(). Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Anton Vorontsov <cbou@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-19power_supply: fix up CHARGE_COUNTER output to be more preciseAndres Salomon
As Richard Smith pointed out, ACR * 6250 / 15 provides for less precision loss than ACR * 4167 / 10, _and_ it doesn't overflow. Switch to using that equation for CHARGE_COUNTER. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: "Richard A. Smith" <richard@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2008-05-13power_supply: add CHARGE_COUNTER property and olpc_battery support for itAndres Salomon
This adds PROP_CHARGE_COUNTER to the power supply class (documenting it as well). The OLPC battery driver uses this for spitting out its ACR values (in uAh). We have some rounding errors (the data sheet claims 416.7, the math actually works out to 416.666667, so we're forced to choose between overflows or precision loss. I chose precision loss, and stuck w/ data sheet values), but I don't think anyone will care that much. Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
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