The WM8994 has an interrupt controller which supports interrupts for
both CODEC and GPIO portions of the chip. Support this using genirq,
while allowing for systems that do not have an interrupt hooked up.

Wrapper functions are provided for the IRQ request and free to simplify
the code in consumer drivers when handling cases where IRQs are not
set up.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Implicit slab.h inclusion via percpu.h is about to go away.  Make sure
gfp.h or slab.h is included as necessary.
Signed-off-by: NTejun Heo <tj@kernel.org>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Correction for chips:
twl6030 is Phoenix Power chip
twl6040 is Phoenix Audio chip
Signed-off-by: NMargarita Olaya Cabrera <magi.olaya@ti.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

This is the MFD driver for the DaVinci Voice codec, it has two clients:

* Voice codec interface
* Voice codec CQ93VC
Signed-off-by: NMiguel Aguilar <miguel.aguilar@ridgerun.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

commit 5fb4d38b ("mfd: Move WM831x to
generic IRQ") didn't take into account that genirq support depends on
GENERIC_HARDIRQS.

Additionally, 2.6.34-rc1 added:
  - commit 2afa62ea ("mfd: Use genirq in
    88pm860x").
  - commit 760e4518 ("mfd: Convert WM8350 to
    genirq").
  - commit 1f1cf8f9 ("mfd: Update irq handler
    in max8925")

Make all of them depend on GENERIC_HARDIRQS to avoid compile errors on
architectures that don't support genirq yet.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

We should only request for the MFD used region, not the whole thing.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Tested-by: NPaul Mundt <lethal@linux-sh.org>
Reviewed-by: NH Hartley Sweeten <hsweeten@visionengravers.com>

This patch fixes a build failure[1], by adding the missing semaphore.h include

References:
[1] http://kisskb.ellerman.id.au/kisskb/buildresult/2234322/Signed-off-by: NPeter Huewe <peterhuewe@gmx.de>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Use the completion interrupt generated by the device rather than
polling for conversions to complete. As a backup we still check
the status of the AUXADC if we don't get a completion, mostly for
systems that don't have the WM831x interrupt infrastructure hooked
up.

Also reduce the timeout for completion of conversions to 5ms from
the previous 10ms, the lower timeout should be sufficient.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Use the completion interrupt generated by the device rather than
polling for conversions to complete. As a backup we still check
the state of the AUXADC if we don't get a completion, mostly for
systems that don't have the WM8350 interrupt infrastructure hooked
up.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

New function twl4030_remove_script(u8 flags) takes a script type as
defined in twl.h and prevents any script already loaded in that position
from running.  This is accomplished by programming SEQ_ADD_* to 0x3f,
the END_OF_SCRIPT value, where SEQ_ADD_* is determined by flags.

(Future) users of this function include OMAP board files for machines
facing a race condition between sleep and warm reset.
Signed-off-by: NMike Turquette <mturquette@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Enable the sh_mobile_sdhi mfd driver on SH-Mobile ARM
processors. While at it, make CONFIG_TMIO_MMC depend on
CONFIG_MFD_SH_MOBILE_SDHI.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add MMC_CAP_MMC_HIGHSPEED support to the sh_mobile_sdhi
driver. Also, remove type cast and FIXME comment.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Revision B of the WM831x devices changes the sense of the tristate
bit for GPIO configuration, inverting it to become an enable instead.
Take account of this in the gpiolib driver.

A current sink regulation status bit has also been added in revision B,
add a flag indicating if it's present but don't use it yet.

This revision also adds an interrupt on key up for the ON pin event
which the existing code is able to take advantage of.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add base address for generic slave ID0, ID1, ID2
and introduced one more entry to align RTC module number between
twl4030 and twl6030
Signed-off-by: NBalaji T K <balajitk@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This patch disables TWL4030/5030 I2C1 adn I2C4(SR) internal pull-up, to
use only the external HW resistor >=470 Ohm for the assured
functionality in HS mode.

While testing the I2C in High Speed mode, it was discovered that
without a proper pull-up resistor, there is data corruption during
multi-byte transfer. RTC(time_set) test case was used for testing.

From the analysis done, it was concluded that ideally we need a
pull-up of 1.6k Ohm(recomended) or atleast 470 Ohm or greater for
assured performance in HS mode.
Signed-off-by: NMoiz Sonasath <m-sonasath@ti.com>
Signed-off-by: NAllen Pais <allen.pais@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Intel Poulsbo (SCH) chipset LPC bridge controller contains several
functions. Creating and MFD driver for the LPC bridge controller allows
simultaneous use of SMBus and GPIO interfaces on the SCH.
Signed-off-by: NDenis Turischev <denis@compulab.co.il>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

For ACPI based systems, we should check for ACPI conflicts when adding the
platform devices. The test will always succeed for non ACPI platforms.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Change the typo CONFIG_INPUT_TWL4030_PWBUTTON_MODULE in the
twl_has_pwrbutton definition to CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE.
Signed-off-by: NEduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: NChristoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Use genirq to simplify IRQ handling in 88pm860x. Remove the interface of
mask/free IRQs on 88pm860x. All these work is taken by genirq. Update the
touchscreen driver of 88pm860x since IRQ handling is changed.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This patch fixes wrong goto statement for error handling on probe.
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Use i2c_dummy in 88pm860x driver to avoid using static in probe function.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Update thread irq handler. Simply the interface of using thread irq.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Update I2C driver in order to fit all of three I2C components in max8925.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Variable remap was incorrectly referencing remap_off for the remap_sleep
case when configuring TWL4030 power scripts.
Signed-off-by: NMike Turquette <mturquette@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The WM8994 is a highly integrated ultra low power audio hub CODEC.
Since it includes on-board regulators and GPIOs it is represented
as a multi-function device, though the overwhelming majority of
the functionality is provided by the ASoC CODEC driver.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

htc-i2cpld should depend on GPIOLIB, otherwise there are many
build errors:

drivers/mfd/htc-i2cpld.c:50: error: field 'chip_out' has incomplete type
drivers/mfd/htc-i2cpld.c:54: error: field 'chip_in' has incomplete type
drivers/mfd/htc-i2cpld.c:243: warning: type defaults to 'int' in declaration of '__mptr'
drivers/mfd/htc-i2cpld.c:243: warning: initialization from incompatible pointer type
drivers/mfd/htc-i2cpld.c:278: warning: type defaults to 'int' in declaration of '__mptr'
drivers/mfd/htc-i2cpld.c:278: warning: initialization from incompatible pointer type
drivers/mfd/htc-i2cpld.c:282: warning: type defaults to 'int' in declaration of '__mptr'
drivers/mfd/htc-i2cpld.c:282: warning: initialization from incompatible pointer type
drivers/mfd/htc-i2cpld.c:315: error: dereferencing pointer to incomplete type
drivers/mfd/htc-i2cpld.c:322: warning: type defaults to 'int' in declaration of '__mptr'
drivers/mfd/htc-i2cpld.c:322: warning: initialization from incompatible pointer type
drivers/mfd/htc-i2cpld.c:467+: error: dereferencing pointer to incomplete type [19X]
drivers/mfd/htc-i2cpld.c:490: error: implicit declaration of function 'gpiochip_add'
drivers/mfd/htc-i2cpld.c:504: error: implicit declaration of function 'gpiochip_remove'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The TWL4030_BCI_BATTERY config option originates from a patch to the
omap git tree. However inclusion in linux was seemingly rejected and
the functionality nears inclusion under a different name so this
removes the bits of the old version that made it into the mainline
kernel again.
Signed-off-by: NChristoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This fixes the aged and unreachable debugfs code in the AB3100
OTP driver so that it's (A) reachable and (B) works. Bug detected
in parallell by Christoph Egger using VAMOS and Robert P. J. Day
by his kernel scanning script.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Cc: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Cc: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This reintroduces the entropy sampling of the AB3100 IRQ as the
IRQF_SAMPLE_RANDOM is going out according to the feature removal
schedule. I'm trying to do this the right way then, so CC:ing some
random people for a quick review. We add entropy for interrupt
events in the AB3100 which are truly random in nature, like
external cables being connected, voltages on batteries dropping
below certain ranges, ADC triggers or overheating.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Cc: Robin Getz <rgetz@blackfin.uclinux.org>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This change introduces a driver for the HTC PLD chip found
on some smartphones, such as the HTC Wizard and HTC Herald.
It works through the I2C bus and acts as a GPIO extender.
Specifically:

 * it can have several sub-devices, each with its own I2C
   address
 * Each sub-device provides 8 output and 8 input pins
 * The chip attaches to one GPIO to signal when any of the
   input GPIOs change -- at which point all chips must be
   scanned for changes

This driver implements the GPIOs throught the kernel's
GPIO and IRQ framework.  This allows any GPIO-servicing
drivers to operate on htcpld pins, such as the gpio-keys
and gpio-leds drivers.
Signed-off-by: NCory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add subdevs in MAX8925. MAX8925 includes regulator, backlight and touch
components.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Basic Max8925 support, which is a power management IC from Maxim
Semiconductor.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Append backlight, led & touch subdevs into 88pm860x driver.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

88PM860x is a complex PMIC device. It contains touch, charger, sound, rtc,
backlight, led, and so on.

Host communicates to 88PM860x by I2C bus. Use thread irq to support this
usage case.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Rename 88PM8607 to 88PM860X in both Makefile and Kconfig under mfd directory.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

88PM8606 and 88PM8607 are two discrete chips used for power management.
Hardware designer can use them together or only one of them according to
requirement.

There's some logic tightly linked between these two chips. For example, USB
charger driver needs to access both chips by I2C interface.

Now share one driver to these two devices. Only one I2C client is identified
in platform init data. If another chip is also used, user should mark it in
companion_addr field of platform init data. Then driver could create another
I2C client for the companion chip.

All I2C operations are accessed by 860x-i2c driver. In order to support both
I2C client address, the read/write API is changed in below.

reg_read(client, offset)
reg_write(client, offset, data)

The benefit is that client drivers only need one kind of read/write API. I2C
and MFD driver can be shared in both 8606 and 8607.

Since API is changed, update API in 8607 regulator driver.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Create 88pm8607-i2c driver to support all I2C operation of 88PM8607.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This converts the AB3100 core MFD driver to use a threaded
interrupt handler instead of the explicit top/bottom-half
construction with a workqueue. This saves some code and make it
more similar to other modern MFD drivers.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The genirq implementation does not allow modules to implement irq_chips
so the conversion of WM8350 to genirq means we can no longer allow the
driver to be built as a module.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This gives us use of the diagnostic facilities genirq provides and
will allow implementation of interrupt support for the WM8350 GPIOs.
Stub functions are provided to ease the transition of the individual
drivers, probably after additional work to pass the IRQ numbers via
the struct devices.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>