Fixes the following W=1 kernel build warning(s):

 drivers/mfd/twl-core.c:496: warning: expecting prototype for twl_regcache_bypass(). Prototype was for twl_set_regcache_bypass() instead

Cc: Tony Lindgren <tony@atomide.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Kai Svahn <kai.svahn@nokia.com>
Cc: syed khasim <x0khasim@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Fixes the following W=1 kernel build warning(s):

 drivers/mfd/wm831x-core.c:121: warning: expecting prototype for wm831x_reg_unlock(). Prototype was for wm831x_reg_lock() instead

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This reverts commit 58d91f1c.

This is a duplicate.
Reported-by: Russ Weight <russell.h.weight@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This driver include linux/irqdomain.h via a bizarre set of
indirection, which we are about to break.

Directly include the required file.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Currently the AXP chip requires to have its IRQ line connected to some
interrupt controller, and will fail probing when this is not the case.

On a new Allwinner SoC (H616) there is no NMI pin anymore, and at
least one board does not connect the AXP's IRQ pin to anything else,
so the interrupt functionality of the AXP chip is simply not available.

Check whether the interrupt line number returned by the platform code is
valid, before trying to register the irqchip. If not, we skip this
registration, to avoid the driver to bail out completely.
Also we need to skip the power key functionality, as this relies on
a valid IRQ as well.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Merge different sub-devices I2C read/write functions into one Regmap,
because PMIC and LDO part need CRC bits for access protection.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Merge header file into driver and remove unuse register define
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Fix flow which is used to check ic exist.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Remove handle_post_irq which is used to retrigger IRQ.
Set IRQ level low trigger in dtsi to keep IRQ always be handled.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Rename mt6360_pmu by mt6360, because of including
not only PMU part, but also entire MT6360 IC
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Rename mt6360_pmu_data by mt6360_ddata because of including
not only PMU part, but also entire MT6360 IC.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Combine mt6360 pmic/ldo resources into mt6360 regulator resources
to simplify the similar resources object.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Indicate sub-dev compatible name by using "-".
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Remove redundant brackets around raw numbers.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Rearrange include file without sorting by alphabet.
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Adds DT binding document for Richtek RT4831.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This adds support Richtek RT4831 core. It includes four channel WLED driver
and Display Bias Voltage outputs.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Adds DT binding document for Richtek RT4831 backlight.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

During more massive generation of interrupts, the IRQ got stuck,
and the subdevices did not see any new interrupts. That happens
especially at wonky USB supply in combination with ADC reads.
To fix that trigger the IRQ at level low instead of falling edge.

Fixes: 0c816045 ("mfd: rn5t618: Add IRQ support")
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This change is just to simplify the code, no actual functional changes.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This is for ChromeOS tablets which have a 'cros_cbas' switch device
in the "Whiskers" base board. This device can be instantiated only by
device tree on ARM platforms. ChromeOS EC doesn't provide a way to
probe the device.
Signed-off-by: Ikjoon Jang <ikjn@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Optionally handle the NRST pin (active low reset) in order to start from a
known state during boot and to shut down the chip when rebooting.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This patch adds/modifies MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The commit 529a1101("mfd: syscon: Don't free allocated name
for regmap_config") doesn't free the allocated name field of struct
regmap_config, but introduce a memory leak. There is another
commit 94cc89eb("regmap: debugfs: Fix handling of name string
for debugfs init delays") fixing this debugfs init issue from root
cause. With this fixing, the name field in struct regmap_debugfs_node
is removed. When initialize debugfs for syscon driver, the name
field of struct regmap_config is not used anymore. So, the allocated
name field of struct regmap_config is need to be freed directly after
regmap initialization to avoid memory leak.

Cc: stable@vger.kernel.org
Fixes: 529a1101("mfd: syscon: Don't free allocated name for regmap_config")
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Currently the software node is removed in error case and at ->remove()
stage unconditionally, that ruins the symmetry. Besides, in some cases,
when mfd_add_device() fails, the device_remove_software_node() call
may lead to NULL pointer dereference:

  BUG: kernel NULL pointer dereference, address: 00000000
  ...
  EIP: strlen+0x12/0x20
  ...
  kernfs_name_hash+0x13/0x70
  kernfs_find_ns+0x32/0xc0
  kernfs_remove_by_name_ns+0x2a/0x90
  sysfs_remove_link+0x16/0x30
  software_node_notify.cold+0x34/0x6b
  device_remove_software_node+0x5a/0x90
  mfd_add_device.cold+0x30a/0x427

Fix all these by guarding device_remove_software_node() with a conditional
and locating it at the right place.

Fixes: 42e59982 ("mfd: core: Add support for software nodes")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

WCD934x supports Multi Button Headset control which enable headset detection
along with headset button detection.

This patch adds interrupts required for MBHC functionality.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Currently only two interrupts supported is added in wcd934x interrupt controller,
however if we are adding more interrupts the file will become too much unreadable.

So add a macro to make adding new interrupts easy and also convert existing
slim and soundwire interrupts to use it.
This is in preparation to enable Multi Button Headset Control support on this
codec.

WCD934x supports Multi Button Headset control which enable headset detection
along with headset button detection.

This patch adds interrupts required for MBHC functionality.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Fix two typos retured --> returned
Signed-off-by: Jian Dong <dongjian@yulong.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

 Add compatible strings and interrupts for pmic keys
which serves as child device of MFD.

MT6358 has two interrupts per key: one for press, another one for
release (_R)
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Some pmics of the mt6397 family (such as MT6358), have two IRQs per
physical key: one for press event, another for release event.

The mtk-pmic-keys driver assumes that each key only has one
IRQ. The key index and the RES_IRQ resource index have a 1/1 mapping.

This won't work for MT6358, as we have multiple resources (2) for one key.

To prepare mtk-pmic-keys to support MT6358, retrieve IRQs by name
instead of by index.

Note: The keys_resources are not part of the device-tree bindings so
this won't break any DT schemas.
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

To support power/home key detection, add definitions for
two more MT6358 PMIC registers:

- TOPSTATUS: homekey and powerkey debounce status
- TOP_RST_MISC: controls homekey,powerkey long press reset time
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

MFD_MP2629 should select MFD_CORE to a prevent build error:

ERROR: modpost: "devm_mfd_add_devices" [drivers/mfd/mp2629.ko] undefined!

Fixes: 06081646 ("mfd: mp2629: Add support for mps battery charger")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add Intel Alder Lake-M LPSS PCI IDs.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Merge tags 'tb-mfd-asoc-v5.14-1', 'tb-mfd-gpio-regulator-v5.14' and 'tb-mfd-regulator-rtc-v5.14' into ibs-for-mfd-merged

Immutable branch between MFD and ASoC due for the v5.14 merge window

Immutable branch between MFD, GPIO and Regulator due for the v5.14 merge window

Immutable branch between MFD, Regulator and RTC due for the v5.14 merge window

The return value of snd_soc_component_write() is stored but not
evaluated and this results in a warning when W=1 is set. Stop storing
the return value to be consistent with all other calls of
snd_soc_component_write() and to remove the warning.

Fixes: 0d6a04da ("ASoC: Add Rockchip rk817 audio CODEC support")
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The MT6359P is a eco version for MT6359 regulator.
We add support based on MT6359 regulator driver.
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The MT6359 is a regulator found on boards based on MediaTek MT6779 and
probably other SoCs. It is a so called pmic and connects as a slave to
SoC using SPI, wrapped inside the pmic-wrapper.
Signed-off-by: Wen Su <wen.su@mediatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This adds support for the MediaTek MT6359 PMIC. This is a
multifunction device with the following sub modules:

- Codec
- Interrupt
- Regulator
- RTC

It is interfaced to the host controller using SPI interface
by a proprietary hardware called PMIC wrapper or pwrap.
MT6359 MFD is a child device of the pwrap.
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

add dt-binding document for MediaTek MT6359 PMIC
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This adds compatible for the MediaTek MT6359 PMIC.
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>