Support voltage control for regulators on ROHM BD71815 PMIC.

ROHM BD71815 contains 5 bucks, 7 LDOs and a boost (intended for LED).
Bucks 1 and 2 support HW state based voltage level and enable states. Other
regulators support HW state based enable states. All bucks and LDOs 1-5
allow voltage changes for RUN state and LDO4 can be enabled/disabled via
GPIO.

LDO3 does support changing between two predetermined voltages by using
a GPIO but this functionality is not included in this commit.

This work is derived from driver originally written by Tony Luo
<luofc@embedinfo.com> - although not much of original work is left.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The MT6315 is a regulator found on boards based on MediaTek MT8192 and
probably other SoCs. It connects as a slave to SoC using SPMI.
Signed-off-by: NHsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1612678457-11548-3-git-send-email-hsin-hsiung.wang@mediatek.comSigned-off-by: NMark Brown <broonie@kernel.org>

The ST-Ericsson U300 platform is getting removed, so this driver is no
longer needed.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210120151307.1726876-1-arnd@kernel.orgSigned-off-by: NMark Brown <broonie@kernel.org>

Driver for regulators exposed by the DVFSRC (dynamic voltage and
frequency scaling resource collector) found in devices based on
mt8183 and newer platforms.
Signed-off-by: NHenry Chen <henryc.chen@mediatek.com>
Link: https://lore.kernel.org/r/1608790134-27425-12-git-send-email-henryc.chen@mediatek.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add support for the DC-DC converters and LDO regulators found in
the ATC2603C and ATC2609A chip variants of the Actions Semi ATC260x
family of PMICs.
Co-developed-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NCristian Ciocaltea <cristian.ciocaltea@gmail.com>
Link: https://lore.kernel.org/r/1117b1a01b3948446cb3cc407e52de3a5d4212b0.1609258905.git.cristian.ciocaltea@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Adds support for Richtek RT4831 DSV Regulator
Signed-off-by: NChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1608217244-314-6-git-send-email-u0084500@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add NXP PF8100/PF8121A/PF8200 regulator driver.

PF8100/PF8121A/PF8200 is PMIC designed for highperformance
consumer applications. It features seven high efficiency buck,
four linear and one vsnvs regulators.

Tested in Engicam i.Core MX8M Mini SOM platform boards.
Signed-off-by: NTroy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20201130112329.104614-2-jagan@amarulasolutions.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add a simple regulator based on SCMI Voltage Domain Protocol.
Signed-off-by: NCristian Marussi <cristian.marussi@arm.com>
----
v6 --> v7
- add proper blank lines between semantic blocks
- fix return value on error path of scmi_reg_is_enabled()
- use generic Failure message on err path of info_get()
- fix comment containing apostrophe

v3 --> v4
- using of_match_full_name core regulator flag
- avoid coccinelle falde complaints about pointer-sized allocations

v2 --> v3
- remove multiple linear mappings support
- removed duplicated voltage name printout
- added a few comments
- simplified return path in scmi_reg_set_voltage_sel()

v1 --> v2
- removed duplicate regulator naming
- removed redundant .get/set_voltage ops: only _sel variants implemented
- removed condexpr on fail path to increase readability

v0 --> v1
- fixed init_data constraint parsing
- fixes for v5.8 (linear_range.h)
- fixed commit message content and subject line format
- factored out SCMI core specific changes to distinct patch
- reworked Kconfig and Makefile to keep proper alphabetic order
- fixed SPDX comment style
- removed unneeded inline functions
- reworked conditionals for legibility
- fixed some return paths to properly report SCMI original errors codes
- added some more descriptive error messages when fw returns invalid ranges
- removed unneeded explicit devm_regulator_unregister from .remove()
Link: https://lore.kernel.org/r/20201123202336.46701-4-cristian.marussi@arm.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add support for the Dialog Semiconductor DA9121, a single-channel
dual-phase buck converter controlled via I2C.
Signed-off-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20201103100021.19603-3-vincent.whitchurch@axis.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add support for Richtek RTMV20 load switch regulator.
Signed-off-by: NChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1601277584-5526-1-git-send-email-u0084500@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add initial support for ROHM BD9576MUF and BD9573MUF PMICs regulators.
These PMICs are mainly used to power the R-Car series processors.

The BD9576 includes some functional-safety features which are not
present on BD9573.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/78baea1d7922506827ca717e277e4e6b391bbb78.1600329307.git.matti.vaittinen@fi.rohmeurope.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add MT6360 regulator driver that contains two BUCKs and six LDOs
Signed-off-by: NGene Chen <gene_chen@richtek.com>
Link: https://lore.kernel.org/r/1598438958-26802-2-git-send-email-gene.chen.richtek@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

This regulator/backlight driver handles the ATTINY88 present on the
RPi 7" touchscreen panel and exposes the power/backlight interfaces.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Eric Anholt <eric@anholt.net>
Cc: Mark Brown <broonie@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
To: dri-devel@lists.freedesktop.org
Link: https://lore.kernel.org/r/20200809105938.6388-2-marex@denx.deSigned-off-by: NMark Brown <broonie@kernel.org>

Adds support for the RT4801 DSV. It has two regulators (DSVP/DSVN) with
an I2C interface. DSVP/DSVN can provide the display panel module for the
positive/negative voltage range from (+/-)4V to (+/-)6V.
Signed-off-by: NChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1597461262-25878-1-git-send-email-u0084500@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Qualcomm platforms have LAB(LCD AMOLED Boost)/IBB(Inverting Buck Boost)
regulators, labibb for short, which are used as power supply for
LCD Mode displays.

This patch adds labibb regulator driver for pmi8998 PMIC, found on
SDM845 platforms.

  [sumits: reworked the driver design as per upstream review]
Signed-off-by: NNisha Kumari <nishakumari@codeaurora.org>
Signed-off-by: NSumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20200622124110.20971-5-sumit.semwal@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>

Add NXP pca9450 pmic driver.
Signed-off-by: NRobin Gong <yibin.gong@nxp.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/1593793178-9737-2-git-send-email-yibin.gong@nxp.comSigned-off-by: NMark Brown <broonie@kernel.org>

This patch adds support for ON Semiconductor FAN53880 regulator.

The FAN53880 is an I2C porgrammable power management IC (PMIC)
that contains a BUCK (step-down converter), four LDOs (low dropouts)
and one BOOST (step-up converter).  It is designed for mobile power
applications.
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Link: https://lore.kernel.org/r/20200702210846.31659-2-chf.fritz@googlemail.comSigned-off-by: NMark Brown <broonie@kernel.org>

The SY8827N from Silergy Corp is a single output DC/DC converter. The
voltage can be controlled via I2C.
Signed-off-by: NJisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20200702171438.20edc523@xhacker.debianSigned-off-by: NMark Brown <broonie@kernel.org>

Some Qualcomm PMICs have the capability to source the VBUS output to
connected peripherals.  This driver will register a regulator to the
regulator list to enable or disable this source by an external driver.
Signed-off-by: NWesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/20200626185516.18018-5-wcheng@codeaurora.orgSigned-off-by: NMark Brown <broonie@kernel.org>

This module shares the same name as its parent PMIC driver, which
confuses tools like kmod. Rename the regulator driver to avoid
such problems.
Signed-off-by: NSeth Forshee <seth.forshee@canonical.com>
Link: https://lore.kernel.org/r/20200624171010.845271-1-seth.forshee@canonical.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add driver for cros-ec-regulator, representing a voltage regulator that
is connected and controlled by ChromeOS EC, and is controlled by kernel
with EC host commands.
Signed-off-by: NPi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: NPrashant Malani <pmalani@chromium.org>
Reviewed-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20200612040526.192878-4-pihsun@chromium.orgSigned-off-by: NMark Brown <broonie@kernel.org>

Adding regulator driver for the Maxim max77826 device.
The max77826 PMIC contains a high-efficiency BUCK regulator, a BUCK
BOOST regulator and 15 LDOs. It is designed for smartphone and tablet
applications and is accessed over I2C.
Signed-off-by: NIskren Chernev <iskren.chernev@gmail.com>
Link: https://lore.kernel.org/r/20200414172250.2363235-2-iskren.chernev@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

The MP8869 from Monolithic Power Systems is a single output DC/DC
converter. The voltage can be controlled via I2C.
Signed-off-by: NJisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20200316223020.1a6d92ae@xhackerSigned-off-by: NMark Brown <broonie@kernel.org>

Adding regulator driver for the device mp5416.
The MP5416 PMIC device contains four DC-DC buck converters and
five regulators, accessed over I2C.
Signed-off-by: NSaravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20200204110419.25933-3-sravanhome@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Few ROHM PMICs allow setting the voltage states for different system states
like RUN, IDLE, SUSPEND and LPSR. States are then changed via SoC specific
mechanisms. bd718x7 driver implemented device-tree parsing functions for
these state specific voltages. The parsing functions can be re-used by
other ROHM chip drivers like bd71828. Split the generic functions from
bd718x7-regulator.c to rohm-regulator.c and export them for other modules
to use.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This introduces the IPQ4019 VQMMC LDO driver needed for
the SD/EMMC driver I/O level operation.
This will enable introducing SD/EMMC support for the built-in controller.
Signed-off-by: NMantas Pucka <mantas@8devices.com>
Signed-off-by: NRobert Marko <robert.marko@sartura.hr>
Link: https://lore.kernel.org/r/20200112113003.11110-1-robert.marko@sartura.hrSigned-off-by: NMark Brown <broonie@kernel.org>

Adding regulator driver for the device mpq7920.
The MPQ7920 PMIC device contains four DC-DC buck converters and
five regulators, is designed for automotive and accessed over I2C.

Fixed sparse warning reported on this patch
Reported-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NSaravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20200109195346.30270-1-sravanhome@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

Add entries for the mp8859 regulator driver
to the build system.
Signed-off-by: NMarkus Reichl <m.reichl@fivetechno.de>
Link: https://lore.kernel.org/r/20200106211633.2882-3-m.reichl@fivetechno.deSigned-off-by: NMark Brown <broonie@kernel.org>

ROHM BD71828 is a power management IC containing 7 bucks and 7 LDOs. Bucks
1,2,6 and 7 can be assigned to a regulator group controlled by run-levels.
Eg. Voltages and enable/disable statuses for specific run-levels (run0 to
run3) can be set via register interface and run level changes can then be
done either via I2C or GPIO.

This initial commit does not support assigning bucks to be controlled via
run-levels but only allows them to be individually controlled.

LDO5 voltage can also be controlled by GPIO2 pin and register interfaces
but this driver only supports the control via register.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/5b1c4a22c7945e97ff2a7924abfeb3239043f8eb.1576054779.git.matti.vaittinen@fi.rohmeurope.comSigned-off-by: NMark Brown <broonie@kernel.org>

The MT6358 is a regulator found on boards based on MediaTek MT8183 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: NHsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1566531931-9772-8-git-send-email-hsin-hsiung.wang@mediatek.comSigned-off-by: NMark Brown <broonie@kernel.org>

SY8824C is an I2C attached single output regulator made by Silergy Corp,
which is used on several Synaptics berlin platforms to control the
power supply of the ARM cores.

Add a driver for it.
Signed-off-by: NJisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163418.1a32fc48@xhacker.debianSigned-off-by: NMark Brown <broonie@kernel.org>

Add support for the 3.3V booster regulator embedded in stm32h7 and stm32mp1
devices, that can be used to supply ADC analog input switches.

This regulator is supplied by vdda. It's controlled by using SYSCFG:
- STM32H7 has a unique register to set/clear the booster enable bit
- STM32MP1 has separate set and clear registers to configure it.
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

When building with CONFIG_MFD_88PM800 and CONFIG_REGULATOR_88PM800
enabled as loadable modules, we see the following warning:

warning: same module names found:
  drivers/regulator/88pm800.ko
  drivers/mfd/88pm800.ko

Rework so that the file is named 88pm800-regulator.
Signed-off-by: NAnders Roxell <anders.roxell@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Adding regulator driver for the device Dialog SLG51000.

The SLG51000 device contains seven compact and customizable low
dropout regulators and is designed for high performance camera modules
and other small multi-rail applications.
Signed-off-by: NEric Jeong <eric.jeong.opensource@diasemi.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Add support for 1V1 1V8 USB3V3 power regulators.
Signed-off-by: NPascal Paillet <p.paillet@st.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Add regulator support for max77650. We support all four variants of this
PMIC including non-linear voltage table for max77651 SBB1 rail.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

BD70528MWV is an ultra-low Iq general purpose single-chip power
management IC for battery-powered portable devices.

Add support for controlling 3 bucks and 3 LDOs present in
ROHM BD70528.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch adds a regulator driver for the MCP16502 PMIC.
This drivers supports basic operations through the
regulator interface such as:
- setting/reading voltage
- setting/reading operating mode
- reading current status
Signed-off-by: NAndrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Lochnagar is an evaluation and development board for Cirrus
Logic Smart CODEC and Amp devices. It allows the connection of
most Cirrus Logic devices on mini-cards, as well as allowing
connection of various application processor systems to provide a
full evaluation platform. This driver supports the board
controller chip on the Lochnagar board.

The Lochnagar board provides power supplies for the attached
CODEC/Amp device. Currently this driver supports the microphone
supplies and the digital core voltage for the attached
device. There are some additional supplies that will be
added in time but these supplies are sufficient for most
systems/use-cases.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

The stpmic1 PMIC embeds several regulators and switches with
different capabilities.
Signed-off-by: Npascal paillet <p.paillet@st.com>
Signed-off-by: NMark Brown <broonie@kernel.org>