The Qualcomm SPMI PMIC chips are components used with the
Snapdragon 800 series SoC family.  This driver exists
largely as a glue mfd component, it exists to be an owner
of an SPMI regmap for children devices described in
device tree.
Signed-off-by: NJosh Cartwright <joshc@codeaurora.org>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Now that the regulator code get its parent supplies purely from the DT, we can
drop the parent supplies resources in the MFD driver.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

ti,system-power-controller is more or less the standard way of
indicating that the PMIC is the system wide power controller and hence
may be used to switch off the system. Almost ALL TI PMIC drivers and
many Maxim PMIC drivers follow the same style.

So support 'ti,system-power-controller' in addition to the usual
'ti,use_poweroff' to indicate that the PMIC instance has control for
switching off the system.
Signed-off-by: NNishanth Menon <nm@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
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>

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>

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 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>

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>

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>

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>

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>

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>

Convert a zero return value on error to a negative one, as returned
elsewhere in the function.

Additionally, converted 1 << 7 to BIT(7) at the suggestion of Lee Jones.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

regmap_add_irq_chip is called from arizona_irq_init with the irq_base
specified as -1 and regmap_add_irq_chip uses if (irq_base) to check if
it should use legacy IRQ mapping. As such the irq mappings are currently
added with irq_domain_add_legacy, rather than irq_domain_add_linear.
This is clearly a typo as there is no reason why this driver can't use
irq_domain_add_linear.

This patch corrects this by passing the irq_base as zero to
regmap_add_irq_chip.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Mark some additional registers as volatile. The write sequencer control
registers should not be cached, as we don't ever want their value
synchronised as this might cause a write sequence to be accidentally
initiated.

Additionally, the DAC_COMP registers require special preconditions to
write so there values wouldn't be updated accurately during a register
sync.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

During init the core checks if the wm5102 has finished starting by reading
register 0x19 and looking at the value. This read always fails since this
is not a readable register, mark it as being one. While we're at it provide
a constant for the register name (as supplied by Charles Keepax).
Signed-off-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The prefix suggests the number should be printed in hex, so use
the %x specifier to do that.

Found by using regex suggested by Joe Perches.
Signed-off-by: NHans Wennborg <hans@hanshq.net>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Convert a zero return value on error to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The interfaces that used to be built in only (interrupts IIRC) no longer
are so allow the driver to be built as a module fixing arm64 allmodconfig
builds.
Signed-off-by: NMark Brown <broonie@linaro.org>
Acked-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>