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* power_supply: bq27x00: fix voltage and current unitsGrazvydas Ignotas2010-02-27
| | | | | | | | The chip returns voltage and current in mV and mA, but power supply class uses uV and uA, so add missing conversion. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply: bq27x00: add status and time propertiesGrazvydas Ignotas2010-02-27
| | | | | | | | | The BQ27x00 series of chips can report time-to-empty and time-to-full, so let's add corresponding properties. Also report charge status based on status flag register. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply: bq27x00: add BQ27500 supportGrazvydas Ignotas2010-02-16
| | | | | | | | | | | BQ27500 is newer fuel gauge chip from TI with slightly changed register layout and some different register semantics. Add new i2c ID for it and handle differences where needed. Also rename bq27200 functions to bq27x00, as they are no longer bq27200 specific. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply: bq27x00: fix temperature conversionGrazvydas Ignotas2010-02-16
| | | | | | | | The power supply class requires tenths of degree Celsius. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply: bq27x00: remove unused struct fieldsGrazvydas Ignotas2010-02-16
| | | | | | | | These are probably leftover from old TI code. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply: bq27x00: remove double endian swapGrazvydas Ignotas2010-02-16
| | | | | | | | | | | | | The bq27x00 registers are little endian, so just read them as such and don't do double endian swap on LE machines. This also gets rid of strange looking shift that was done after reading 8bit register because endian swap in bq27x00_read() was messing it up. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* da9030_battery: fix spelling in commentStefan Weil2010-02-02
| | | | | | | | | | | platfrom -> platform monotor -> monitor Signed-off-by: Stefan Weil <weil@mail.berlios.de> Cc: Anton Vorontsov <cbouatmailru@gmail.com> Acked-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* wm97xx_battery: Clean up some warningsMark Brown2010-01-29
| | | | | | | | | | Staticise work_lock (nothing outside the driver has any reason to see it) and specify dev when requesting the charger IRQ (since that's what we pass in when we free it). Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* wm97xx_battery: Handle missing platform data gracefullyMark Brown2010-01-29
| | | | | | | | Don't unconditionally dereference the WM97xx core platform data since it may not be present, causing an oops. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* pmu_battery: Fix battery full reportingThomas Champagne2009-12-17
| | | | | | | | | | | Prior to this patch, pmu_battery was unable to report battery full status. This patch fixes the issue by adding a proper handling code into pmu_bat_get_property(): if we're on AC and the battery isn't charging, then the battery is considered full. Signed-off-by: Thomas Champagne <lafeuil@gmail.com> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* Merge git://git.infradead.org/battery-2.6Linus Torvalds2009-12-15
|\ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/battery-2.6: power_supply_sysfs: Handle -ENODATA in a special way wm831x_backup: Remove unused variables gta02: Set pcf50633 charger_reference_current_ma pcf50633: Query charger status directly pcf50633: Properly reenable charging when the supply conditions change pcf50633: Get rid of charging restart software auto-triggering pcf50633: introduces battery charging current control pcf50633: Add ac power supply class to the charger wm831x: Factor out WM831x backup battery charger
| * power_supply_sysfs: Handle -ENODATA in a special wayAnton Vorontsov2009-12-02
| | | | | | | | | | | | | | | | | | | | | | There are cases when some device can not report any meaningful value, e.g. TWL4030 charger can report voltage only when charging is active. In these cases drivers will return -ENODATA, and we shouldn't flood kernel log with error messages. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * wm831x_backup: Remove unused variablesAlan Cox2009-11-17
| | | | | | | | | | | | Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * pcf50633: Query charger status directlyPaul Fertser2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Current scheme is fragile and is likely to go off sync, especially on batfull->adapter charging automatic MBC transition. Query the status bit every time we need it instead. We need to export another function to query for USB presence because we can't read anything from PCF50633 (via I2C) inside irq context and that is needed by usb gadgets. Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * pcf50633: Properly reenable charging when the supply conditions changePaul Fertser2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | If chgmod == BATFULL, setting chgena has no effect. Datasheet says we need to set resume instead but when autoresume is used resume doesn't work. Clear and set chgena instead. This enables a user to force charging by re-plugging USB even when the charger entered Battery Full mode, might be handy before a long trip. Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * pcf50633: Get rid of charging restart software auto-triggeringPaul Fertser2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | After reaching Battery Full condition MBC state machine switches back into charging mode when the battery voltage falls below 96% of a battery float voltage. 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 75-80%. That is a desired behaviour recommended by battery manufacturers, don't mess with it. Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * pcf50633: introduces battery charging current controlBalaji Rao2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement a new sysfs attribute to allow changing MBC charging limit on the fly independently of usb current limit. It also gets set automatically every time usb current limit is changed. Limiting charging current also prevents violating USB specification in the case when the whole device is shut down and usb current limit is reset to the factory default by the pcf50633 state transition. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * pcf50633: Add ac power supply class to the chargerSean McNeil2009-11-15
| | | | | | | | | | | | | | | | | | This adds an appropriate ac power_supply class and shows usb only when at the appropriate current limit. Signed-off-by: Sean McNeil <sean@mcneil.com> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * wm831x: Factor out WM831x backup battery chargerMark Brown2009-11-15
| | | | | | | | | | | | | | | | | | | | | | The backup battery on WM831x is a separate IP block to the main PMU and is largely unrelated to the main supply functionality. Factor it out into a separate driver in order to reflect this and better support future hardware versions. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | const: constify remaining dev_pm_opsAlexey Dobriyan2009-12-15
| | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mfd: Mask and unmask wm8350 IRQs on request and freeMark Brown2009-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bring the WM8350 IRQ API more in line with the generic IRQ API by masking and unmasking interrupts as they are requested and freed. This is mostly just a case of deleting the mask and unmask calls from the individual drivers. The RTC driver is changed to mask the periodic IRQ after requesting it rather than only unmasking the alarm IRQ. If the periodic IRQ fires in the period where it is reqested then there will be a spurious notification but there should be no serious consequences from this. The CODEC drive is changed to explicitly disable headphone jack detection prior to requesting the IRQs. This will avoid the IRQ firing with no jack set up. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | mfd: Convert wm8350 IRQ handlers to irq_handler_tMark Brown2009-12-13
| | | | | | | | | | | | | | | | | | This is done as simple code transformation, the semantics of the IRQ API provided by the core are are still very different to those of genirq (mainly with regard to masking). Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | mfd: Fix memleak in pcf50633_client_dev_registerLars-Peter Clausen2009-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Since platform_device_add_data copies the passed data, the allocated subdev_pdata is never freed. A simple fix would be to either free subdev_pdata or put it onto the stack. But since the pcf50633 child devices can rely on beeing children of the pcf50633 core device it's much more elegant to get access to pcf50633 core structure through that link. This allows to get completly rid of pcf5033_subdev_pdata. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | collie: add battery driverThomas Kunze2009-11-27
|/ | | | This driver is based on tosa_battery.c.
* Merge branch 'master' of ↵Anton Vorontsov2009-09-22
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/power/wm97xx_battery.c
| * Merge git://git.infradead.org/users/cbou/battery-2.6.31Linus Torvalds2009-07-30
| |\ | | | | | | | | | | | | | | | | | | * 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
| * | wm97xx_batery: replace driver_data with dev_get_drvdata()Alexander Beregalov2009-07-12
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | power_supply: Add driver for the PMU on WM831x PMICsMark Brown2009-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The WM831x PMICs provide power path management from three sources: a wall supply, USB and a battery with integrated charger. They also provide an additional backup supply with integrated for maintaining always on functionality such as the RTC and monitoring of power switches. After some initial configuration at startup the device operates autonomously, the driver simply provides reporting of the current state. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | | ds2760_battery: Fix integer overflow for time_to_empty_nowDaniel Mack2009-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the device we're currently developing, battery sizes of ~2.8Ah and current flow of ~600mA are typical. With that values, the life_sec computation overflows due to the multiplication by 3600. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | | wm97xx_battery: Convert to dev_pm_opsMarek Vasut2009-09-04
| | | | | | | | | | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | | wm97xx_battery: Use irq to detect charger stateMarek Vasut2009-09-04
| | | | | | | | | | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | | wm97xx_battery: Use platform_dataMarek Vasut2009-09-04
| | | | | | | | | | | | | | | | | | | | | | | | This patch converts the wm97xx-battery driver to use platform_data supplied by ac97 bus. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | | ds2760_battery: implement set_charged() featureDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ds2760's internal current meter is not reliable enough as it has an inacurracy of around ~15%. Without any correction for that error, the current accumulator is couting up all the time, even though the battery is already fully charged and hence destroys the static information. The longer it is connected, the worse is the aberration. Fortunately, this can be corrected by the DS2760_CURRENT_OFFSET_BIAS register. Using the external power_supply_set_battery_charged() function, this register is now gauging the measurement. A delayed work is used to debounce flaky GPIO signals and to let the current value settle. Also see Maxim's application note AN4188. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Cc: Matt Reimer <mreimer@vpop.net> Cc: Anton Vorontsov <cbou@mail.ru> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | power_supply: get_by_name and set_charged functionalityDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a function that indicates that a battery is fully charged. It also includes functions to get a power_supply device from the class of registered devices by name reference. These can be used to find a specific battery to call power_supply_set_battery_charged() on. Some battery drivers might need this information to calibrate themselves. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Ian Molton <spyro@f2s.com> Cc: Anton Vorontsov <cbou@mail.ru> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | power_supply: EXPORT_SYMBOL cleanupsDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While I'm at it, cleanup the power supply code so that EXPORT_SYMBOL_GPL appears directly after the symbole declaration. checkpatch.pl wants it that way. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Ian Molton <spyro@f2s.com> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | ds2760_battery: add current_accum module parameterDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When connecting a ds2760 to a partly loaded battery the first time, there must be a way to bootstrap the current_accum value. Without that, the current capactity value is bogus until the battery is fully charged for the first time. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Cc: Matt Reimer <mreimer@vpop.net> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | ds2760_battery: handle full_active_uAh == 0 case correctlyDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In systems where the battery monitor is not part of the battery pack and is hence not bootstrapped with sane values, the full_active_uAh is likely to be zero. Handle that case by defaulting to the rated_capacity information which can be passed to the driver using the 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> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | ds2760_battery: add rated_capacity module parameterDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For systems where the ds2760 is soldered directly on the PCB, the 'rated capacity' register is not set to anything useful. In order to allow users to bootstrap this value, introduce a new module parameter 'rated_capacity' and use it to write the internal EEPROM in case the value differes from what's been given. 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>
* | | ds2760_battery: export more featuresDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Export POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW and POWER_SUPPLY_PROP_CAPACITY features to the power supply core. 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>
* | | ds2760_battery: delay power supply registrationDaniel Mack2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a race condition I recently introduced with the PMOD feature addition (cef437e3: "w1: ds2760_battery: add support for sleep mode feature"). Postpone the call to power_supply_register() to fix it. 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>
* | | wm8350_power: Implement charge type propertyMark Brown2009-07-14
| | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | power_supply: Add a charge_type property, and use it for olpc driverAndres Salomon2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | olpc_battery: Add an 'error' sysfs device that displays raw errorsAndres Salomon2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | Grab the error code from EC_BAT_ERRCODE and let the user see it (rather than attempting to decode it as we do with PROP_HEALTH) with a separate error sysfs file. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* | | Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL"Andres Salomon2009-06-30
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Add ds2782 battery gas gauge driverRyan Mallon2009-06-30
| | | | | | | | | | | | | | 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>
* | olpc_battery: Ensure that the TRICKLE bit is checkedAndres Salomon2009-06-30
| | | | | | | | | | | | | | | | | | 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>
* | olpc_battery: Fix up eeprom read functionAndres Salomon2009-06-30
|/ | | | | | | | | | | 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>
* da9030_battery: Fix race between event handler and monitorMike Rapoport2009-06-08
| | | | | | | | | | | | | | | | | | | 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>
* Add MAX17040 Fuel Gauge driverMinkyu Kang2009-06-08
| | | | | | | | 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>
* w1: ds2760_battery: add support for sleep mode featureDaniel Mack2009-06-08
| | | | | | | | | | | | | | | 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>
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