Versatile Express platform has an elaborated configuration system,
consisting of microcontrollers residing on the mother- and
daughterboards known as Motherboard/Daughterboard Configuration
Controller (MCC and DCC). The controllers are responsible for
the platform initialization (reset generation, flash programming,
FPGA bitfiles loading etc.) but also control clock generators,
voltage regulators, gather environmental data like temperature,
power consumption etc. Even the video output switch (FPGA) is
controlled that way.

Those devices are _not_ visible in the main address space and
the usual communication channel uses some kind of a bridge in
the peripheral block sending commands (requests) to the
controllers and receiving responses. It can take up to
500 microseconds for a transaction to be completed, therefore
it is important to provide a non-blocking interface to it.

This patch adds an abstraction of this infrastructure. Bridge
drivers can register themselves with the framework. Then,
a driver of a device can request an abstract "function" - the
request will be redirected to a bridge referred by thedd
"arm,vexpress,config-bridge" property of the device tree node.
Signed-off-by: NPawel Moll <pawel.moll@arm.com>

This function needs to be exported to let clients be able to
request the ape opp 100 voltage.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NMike Turquette <mturquette@linaro.org>

Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The initilization of GPADC is moved from core driver to touch driver
with DT support.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Use irqdomain and allocating interrupts. It's necessary for supporting
DT mode.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

smsc ece1099 is a keyboard scan or gpio expansion device.
The patch create keypad and gpio expander child for this
multi function smsc driver.

Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is the DA9055 MFD core driver that instantiate all the dependent
component drivers and provides them the device access via I2C.

This patch is functionally tested on Samsung SMDK6410.
Signed-off-by: NDavid Dajun Chen <dchen@diasemi.com>
Signed-off-by: NAshish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add RTC alarm interrupt details to TPS65910 MFD device list, to support
RTC alarm events.
Signed-off-by: NVenu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

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

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

mfd: Add backlight as subdevice to the tps65217
Signed-off-by: NMatthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The PRCMU has its own USB, Thermal, GPIO, Modem, HSI and RTC drivers,
amongst other things. This patch allows those subordinate devices to
use it as an interrupt controller as and when they are DT enabled.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This fixes:

drivers/mfd/max8907.c:179:16: sparse: symbol 'max8907_pm_off' was not declared. Should it be static?
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

TI LP8788 PMU provides regulators, battery charger, ADC,
RTC, backlight driver and current sinks.

This MFD patch supports the I2C communication using the regmap,
the interrupt handling using the linear IRQ domain and
configurable platform data structures for each driver module.

 (Driver Architecture)

                                         < mfd devices >
  LP8788 HW  ..........  mfd  .......... regulator drivers
                I2C                      power supply driver
                IRQs                     iio adc driver
                                         rtc driver
                                         backlight driver
                                         current sink drivers

  o regulators    : LDOs and BUCKs
  o power supply  : Battery charger
  o iio adc       : Battery voltage/temperature
  o rtc           : RTC and alarm
  o backlight
  o current sink  : LED and vibrator

All MFD device modules are registered by LP8788 MFD core driver.
For sharing information such like the virtual IRQ number,
MFD core driver uses the resource structure.
Then each module can retrieve the specific IRQ number and detect it
in the IRQ thread.

Configurable platform data is handled in each driver module.
Signed-off-by: NMilo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The local timer clock is based on ARM subsystem clock. This patch
obtains a more exact value of that clock by reading PRCMU registers.
Using this increases the accuracy of the local timer events.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NRickard Andersson <rickard.andersson@stericsson.com>
Signed-off-by: NMichel Jaouen <michel.jaouen@stericsson.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Two variables named master_int and sleepseq_val, were just
declared without initialization. Pointers to these variables
were passed to mfd read function. After that these variables
were used for some of the logical operations.

Though logically there is nothing wrong, compiler is complaining
that the variables may be used uninitialized.

Hence fixing these warning messages by initializing them.
Signed-off-by: NVenu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add device tree handling to the palmas MFD. This takes the values
that can be set from platform data from the device tree nodes instead.
Signed-off-by: NGraeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add the platform data and data structures for children that shall be
added by a future set of commits.
Signed-off-by: NGraeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Support for loading the twl4030 audio module via devicetree.
Sub devices for codec and vibra will be created as mfd devices once the
core MFD driver is loaded when the kernel is booted with a DT blob.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

twl-core has API to get the boot time configured HFCLK rate which has the
same rate as the audio MCLK.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

CFG_BOOT register's HFCLK_FREQ field hold information about the used HFCLK
frequency.
Add possibility for users to get the configured rate based on this
register.
This register was configured during boot, without it the chip would not
operate correctly, so we can trust on this information.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

To facilitate the device tree support the probe function need to be rearanged.
Small cleanup in the APLL frequency selection part as well.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

To clean up the module probe and remove functions.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Place the MODULE_* lines in the same block and add MODULE_DESCRIPTION.
Rearange the platform_driver structure at the same time.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Swith the palmas to linear domain in all cases so in future DT and non
DT cases will work the same.

With this patch children no longer need IRQ resources as it's easier
for them to use regmap_get_virq. So we can remove the resources
definitions.
Signed-off-by: NGraeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Improve the error exit path so that we correctly de-allocate resources
that have been allocated upto the point where error occurs.
Signed-off-by: NGraeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Provide a compatible string for the AB8500 CODEC to aid in
configuration property look-up from its associated Device Tree
node.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

commit e7c706b1 migrated the allocation
of struct mc13xxx to devm_* functions, but left a kfree(mc13xxx) in the
mc13xxx_common_init error path. Remove it to prevent memory corruption.
Signed-off-by: NAndreas Pretzsch <apr@cn-eng.de>
Reviewed-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Convert the struct i2c_msg initialization to C99 format. This makes
maintaining and editing the code simpler. Also helps once other fields
like transferred are added in future.

Thanks to Julia Lawall <julia.lawall@lip6.fr>  for automating the conversion
Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The TLL specific code such as channels clocks enable/disable,
initialization functions are removed from the USBHS core
driver. The hwmod of the usb tll is retrieved and omap device
build is performed to created the platform device for the
usb tll component.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: NPartha Basak <parthab@india.ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The usbhs driver invokes the enable/disable APIs of the
usb tll driver in the runtime resume/suspend callbacks
of the runtime get sync and put sync of the usbhs driver.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: NPartha Basak <parthab@india.ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The platform driver for the TLL component of the OMAP USB host controller
is implemented. Depending on the TLL hardware revision , the TLL channels
are configured. The USB HS core driver uses this driver through exported
APIs from the TLL platform driver.
usb_tll_enable and usb_tll_disble are the exported APIs of the USB TLL
platform driver.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: NPartha Basak <parthab@india.ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Sparse complains:

  CHECK   drivers/power/88pm860x_battery.c
drivers/power/88pm860x_battery.c:128:5: warning: symbol 'array_soc' was not declared. Should it be static?
  CHECK   drivers/power/88pm860x_charger.c
drivers/power/88pm860x_charger.c:640:3: warning: symbol 'pm860x_irq_descs' was not declared. Should it be static?
  CHECK   drivers/mfd/88pm860x-core.c
drivers/mfd/88pm860x-core.c:803:53: warning: incorrect type in assignment (different base types)
drivers/mfd/88pm860x-core.c:803:53:    expected struct charger_regulator *charger_regulators
drivers/mfd/88pm860x-core.c:803:53:    got struct regulator_bulk_data static [toplevel] *

The issues are minor, except for the last one. We seemed to use
'regulator_bulk_data' struct (just as charger manager documentation
wrongly tells us), but in real it should have been
'struct charger_regulator'. The only reason that it worked is
because both 'supply' and 'regulator_name' struct members are the
first in these structs. :-)
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

There are charger and battery measurement feature for 88pm860x PMIC.

For charger, it can support pre-charge with small current when battery is
nearly exausted and then changed into fast-charge with CC&CV mode.

For battery monitor, it can support battery measurement such as
vbat,vsys,vchg and ibat etc,it can aslo accumulating the Coulomb value
charged or discharged from battery based on Conlomb Counter, we use it
to estimate battery capacity.
Signed-off-by: NJett.Zhou <jtzhou@marvell.com>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

Remove redundant check in is_volatile_reg().
Signed-off-by: NVenu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Move probe() and other functions from 88pm860x-i2c.c to 88pm860x-core.c.
Since it could benefit to handle DT information.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Since PREG regulator is the only one regulator in 88PM8606, and other
regulators are in 88PM8607. Checking resource as identifying regulator
is not a good way. We can use NULL resource to indentify PREG regulator.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Remove array in parent's platform data. Use struct regulator_init_data
as regulator device's platform data directly. So a lot of pdata are
added into parent's platform data. And voltage out register offset
is used as IORESOURCE_REG to distinguish different regualtor devices.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Remove the register offset definition. All these register offset
are transfered as IORESOURCE_REG resources.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>