The headphone detect and charger are using the IRQ numbers so need
to take account of irq_base with the genirq conversion. I obviously
picked the wrong system for initial testing.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

To better match genirq.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

The power supply class requires tenths of degree Celsius.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

These are probably leftover from old TI code.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

platfrom -> platform
monotor -> monitor
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Cc: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

Don't unconditionally dereference the WM97xx core platform data since
it may not be present, causing an oops.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

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: NThomas Champagne <lafeuil@gmail.com>
Acked-By: NDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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: NAnton Vorontsov <avorontsov@ru.mvista.com>

This driver is based on tosa_battery.c.

Signed-off-by: NAlan Cox <alan@linux.intel.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NBalaji Rao <balajirrao@openmoko.org>
Signed-off-by: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

This adds an appropriate ac power_supply class and shows usb only when
at the appropriate current limit.
Signed-off-by: NSean McNeil <sean@mcneil.com>
Signed-off-by: NPaul Fertser <fercerpav@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

This patch converts the wm97xx-battery driver to use platform_data
supplied by ac97 bus.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>

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: NDaniel 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: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel 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: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Ian Molton <spyro@f2s.com>
Cc: Matt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Acked-by: NMatt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Acked-by: NMatt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Export POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW and POWER_SUPPLY_PROP_CAPACITY
features to the power supply core.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Acked-by: NMatt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

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: NDaniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Acked-by: NMatt Reimer <mreimer@vpop.net>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

direct access of driver_data is going away.
Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>