The GPBR block provides a set of battery-backed registers that can be used
to save data which need to be kept when the system is powered down and
VDD-core is maintained by an external battery.

A typical usage is the RTT block (when used as an RTC) which needs one of
those registers to save the current time.
Signed-off-by: NBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NJohan Hovold <johan@kernel.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Let's define the voltatile registers (those that can't be cached) and
enable caching.  The rk808 is accessed almost constantly with cpufreq
so this is really nice.

As measured by ftrace:
  before this change: cpu0_set_target() => ~2200us
  after this change:  cpu0_set_target() =>  ~500us
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Reviewed-by: NChris Zhong <zyw@rock-chips.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

We use a dummy IRQ chip to dispatch interrupts to the two seperate IRQ
domains on the Arizona devices. This is just a simple software IRQ chip
and thus the current handle_edge_irq is unnecessary for its needs.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The max14577 MFD cells do not have any resources so the IRQ domain
passed to mfd_add_devices is not used.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

STMPE now supports using a GPIO as an IRQ source.  Document the device
tree binding for this option.
Signed-off-by: NSean Cross <xobs@kosagi.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The stmpe_platform_data has a irq_over_gpio field, which allows the
system to read STMPE events whenever an IRQ occurs on a GPIO pin.
This patch adds the ability to configure this field and to use a GPIO
as an IRQ source for boards configuring the STMPE in device tree.
Signed-off-by: NSean Cross <xobs@kosagi.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch fix warning message with CONFIG_PM_SLEEP disabled
If CONFIG_PM_SLEEP is not enabled we receive the following warning message:

drivers/mfd/intel_soc_pmic_core.c:118:12:
 warning: 'intel_soc_pmic_suspend' defined but not used
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

pci_enable_msi() can return failure with both positive and negative
integers -- it returns 0 for success -- but is only tested here for
"if (ret < 0)".  This causes us to try to use MSI on the RTS5249 SD
reader in the Dell XPS 11 when enabling MSI failed, causing:

[    1.737110] rtsx_pci: probe of 0000:05:00.0 failed with error -110

Cc: stable <stable@vger.kernel.org>
Reported-by: ND. Jared Dominguez <Jared_Dominguez@Dell.com>
Tested-by: ND. Jared Dominguez <Jared_Dominguez@Dell.com>
Signed-off-by: NChris Ball <chris@printf.net>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

In the resume path, the ADC invokes am335x_tsc_se_set_cache() with 0 as
the steps argument if continous mode is not in use. This in turn disables
all steps and so the TSC is not working until one ADC sampling is
performed.

This patch fixes it by writing the current cached mask instead of the
passed steps.

Fixes: 7ca6740c ("mfd: input: iio: ti_amm335x: Rework TSC/ADCA
synchronization")
Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Allow regmap to provide debugfs access to the register map by telling it
what registers are valid.
Signed-off-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Setup the PMIC to make a restart when a watchdog interrupt occures.
If this is not configured, the PMIC will shut down the power supply
without a restart.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

When dump a content of the registers let's use snprintf() directly with %*ph
specifier.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This adds driver to support HiSilicon Hi6421 PMIC. Hi6421 includes multi-
functions, such as regulators, codec, ADCs, Coulomb counter, etc.
This driver includes core APIs _only_.

Drivers for individul components, like voltage regulators, are
implemented in corresponding driver directories and files.

Registers in Hi6421 are memory mapped, so using regmap-mmio API.
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add documentation for HiSilicon Hi6421 PMIC DT binding.
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch removes FSF address because it can be changed. While here, update
the copyright lines by adding Intel Corp. to them.

There is no functional change.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Intel Quark X1000 SoC supports IRQ based GPIO. This patch will
enable MFD support for Quark X1000 and provide IRQ resources
to Quark X1000 GPIO device driver.
Signed-off-by: NChang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Tested-by: NChang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch adds the PCI id for Intel Quark ILB.
It will be used for GPIO and Multifunction device driver.
Signed-off-by: NJosef Ahmad <josef.ahmad@intel.com>
Acked-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch refactors the driver to use helper functions instead of
copy'n'pasted pieces of code.

It also introduces an additional struct to hold a chipset info. The chipset
info will be used to store features that are supported by specific processor or
chipset. LPC_SCH supports SMBUS, GPIO and WDT features. As this code base might
expand further to support more processors, this implementation will help to
keep code base clean and manageable.

The patch is partially based on the work done by Chang Rebecca Swee Fun.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: NChang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The RK808 chip is a power management IC for multimedia and handheld
devices. It contains the following components:

- Regulators
- RTC
- Clkout

The RK808 core driver is registered as a platform driver and provides
communication through I2C with the host device for the different
components.
Signed-off-by: NChris Zhong <zyw@rock-chips.com>
Signed-off-by: NZhang Qing <zhangqing@rock-chips.com>
Tested-by: NHeiko <heiko@sntech.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add device tree bindings documentation and a header file
for rockchip's RK808 pmic.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NChris Zhong <zyw@rock-chips.com>
Signed-off-by: NZhang Qing <zhangqing@rock-chips.com>
Tested-by: NHeiko <heiko@sntech.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Current code init regmap with &da9052_regmap_config for both da9052-spi and
da9052-i2c drivers. da9052-spi sets the read_flag_mask.
The same setting may be applied for da9052-i2c if da9052-spi driver is loaded
first because they actually use the same regmap_config setting.
Fix this issue by using a local variable for regmap_config in da9052-spi driver,
so the settings in spi driver won't impact the settings in i2c driver.
Also makes da9052_regmap_config const to avoid similar issue.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Acked-by: NAdam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

If one of the internal Arizona IRQs is set as a wake source this needs
to be propogated back to the actual IRQ line that the Arizona device is
attached to.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch update DT binding to support INn_MODE init_data. Each
input signal path can be configurated either as a Analogue or
Digital using the INn_MODE registers.
Signed-off-by: NInha Song <ideal.song@samsung.com>
Reviewed-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Some boards need to set the INn_MODE[1:0] register to change
the input signal patch. This wlf,inmode property is optional.
If present, values must be specified less than or equal to
the number of input singals. If values less than the number
of input signals, elements that has not been specifed are set
to 0 by default.

Example:
   - wlf,inmode = <2 0 2>;	/* IN1, IN3 use DMIC */
Signed-off-by: NInha Song <ideal.song@samsung.com>
Reviewed-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Some arizona devices have a second asynchronous sample rate, add the
registers necessary to support this.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Ricoh RN5T618 is a power management IC which integrates 3 step-down
DCDC converters, 7 low-dropout regulators, a Li-ion battery charger,
fuel gauge, ADC, GPIOs and a watchdog timer.

This commit adds a MFD core driver to support the I2C communication
with the device.
Signed-off-by: NBeniamino Galvani <b.galvani@gmail.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

After enabling and disabling ADC continuous mode via sysfs, ts_print_raw
fails to return any data. This is because when ADC is configured for
continuous mode, it disables touch screen steps.These steps are not
re-enabled when ADC continuous mode is disabled. Therefore existing values
of REG_SE needs to be cached before enabling continuous mode and
disabling touch screen steps and enabling ADC steps. The cached value
are to be restored to REG_SE once ADC is disabled.

Fixes: 7ca6740c ("mfd: input: iio: ti_amm335x: Rework TSC/ADC synchronization")

Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: NVignesh R <vigneshr@ti.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This adds the device tree bindings documentation for Ricoh RN5T618.
Signed-off-by: NBeniamino Galvani <b.galvani@gmail.com>
Reviewed-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The include guard doesn't work as intended due to the transposition
typo DAVINCI -> DAVINIC.
Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

http://www.ti.com/lit/pdf/SWCZ010:
  Glitch on SDA-SCL not managed correctly by the I2C IP

Impact:
The standard specifies that the I2C transfer should restart on a start
event in all cases. The current design does not support two consecutive
Start conditions. This can cause the first real access after such a
glitch to be corrupted.

Description:
An unexpected glitch on SDA and SCL can generate a wrong start event.
In the current design, the SCL line must toggle two times to detect a
new start event and completely restart the I2C access; hence the real
start event is not detected in the case of a single SCL toggle.

Workaround:
Repeat I2C access.

A simpler workaround is to make a dummy transfer just before the first
access to the tps65910 chip. This can be done unconditionally.
Signed-off-by: NArnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The header file include/linux/mfd/ti_ssp.h does not seem to be used
anywhere. It was orphaned by 3033ee62 "mfd: Remove obsolete ti-ssp
driver". Remove it.
Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Numbers are generated by taking the largest currently used values.

drivers/mfd/stmpe.c:252:17:
  warning: Variable length array is used.
drivers/mfd/stmpe.c:857:16:
  warning: Variable length array is used.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The largest byte size in use currently is 8.  Fix array size to 9.

drivers/mfd/max8925-i2c.c:40:33:
  warning: Variable length array is used
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/88pm860x-i2c.c:125:33:
  warning: Variable length array is used.
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The following functions appear to be unused since v2.6.39:

  pm860x_page_reg_read()
  pm860x_page_bulk_write()
  pm860x_page_set_bits()

Let's remove them.
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch adds the LPC Device IDs for the Intel 9 Series PCH.
Signed-off-by: NJames Ralston <james.d.ralston@intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch improves support for the flash cell of
max77693 mfd by adding relevant of_compatible field
and a structure for caching related platform data.
Added are also FLASH registers related macro definitions.
Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

According to the MAX77693 documentation the name of
the register is FLASH_STATUS.
Signed-off-by: NJacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This is the same as used in Baytrail so add the new PCI ID to the driver's
list of supported IDs.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Since commit b4226107 ("regmap: i2c: fallback to SMBus if the adapter
does not support standard I2C"), regmap-i2c will check the
I2C_FUNC_SMBUS_[BYTE|WORD]_DATA functionality based on the regmap_config
setting if the adapter does not support standard I2C.

So remove the I2C_FUNC_SMBUS_BYTE_DATA functionality check in the driver code.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>