[ Upstream commit f949a9ebce7a18005266b859a17f10c891bb13d7 ]
On Cherry Trail devices with an AXP288 PMIC the external SD-card slot
used the AXP's DLDO2 as card-voltage and either DLDO3 or GPIO1LDO
(GPIO1 pin in low noise LDO mode) as signal-voltage.
These regulators are turned on/off and in case of the signal-voltage
also have their output-voltage changed by the _PS0 and _PS3 power-
management ACPI methods on the MMC-controllers ACPI fwnode as well as
by the _DSM ACPI method for changing the signal voltage.
The AML code implementing these methods is directly accessing the
PMIC through ACPI I2C OpRegion accesses, instead of using the special
PMIC OpRegion handled by drivers/acpi/pmic/intel_pmic_xpower.c .
This means that the contents of the involved PMIC registers can change
without the change being made through the regmap interface, so regmap
should not cache the contents of these registers.
Mark the regulator power on/off, the regulator voltage control and the
GPIO1 control registers as volatile, to avoid regmap caching them.
Specifically this fixes an issue on some models where the i915 driver
toggles another LDO using the same on/off register on/off through
MIPI sequences (through intel_soc_pmic_exec_mipi_pmic_seq_element())
which then writes back a cached on/off register-value where the
card-voltage is off causing the external sdcard slot to stop working
when the screen goes blank, or comes back on again.
The regulator register-range now marked volatile also includes the
buck regulator control registers. This is done on purpose these are
normally not touched by the AML code, but they are updated directly
by the SoC's PUNIT which means that they may also change without going
through regmap.
Note the AXP288 PMIC is only used on Bay- and Cherry-Trail platforms,
so even though this is an ACPI specific problem there is no need to
make the new volatile ranges conditional since these platforms always
use ACPI.
Fixes: dc91c3b6fe66 ("mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile")
Fixes: cd53216625 ("mfd: axp20x: Fix axp288 volatile ranges")
Reported-and-tested-by: Clamshell <clamfly@163.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit dc91c3b6fe66a13ac76f6cb3b2100c0779cd3350 upstream.
On AXP288 and newer PMICs, bit 7 of AXP20X_VBUS_IPSOUT_MGMT can be set
to prevent using the VBUS input. However, when the VBUS unplugged and
plugged back in, the bit automatically resets to zero.
We need to set the register as volatile to prevent regmap from caching
that bit. Otherwise, regcache will think the bit is already set and not
write the register.
Fixes: cd53216625 ("mfd: axp20x: Fix axp288 volatile ranges")
Cc: stable@vger.kernel.org
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The AXP803 has a VBUS power input. Its functionality is the same as the
one found in the AXP813. Now that the axp20x_usb_power driver supports
this variant, we can add an mfd cell for it to use it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP813 has a VBUS power input. Now that the axp20x_usb_power driver
supports this variant, we can add an mfd cell for it to use it.
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
[wens@csie.org: add commit message]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
- Add support for Power Supply to AXP813
- Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
- Add support for UART to Exynos LPASS
- Fix-ups
- Use supplied MACROS; ti_am335x_tscadc
- Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
- Regmap changes; bd9571mwv, wm5110-tables
- Kconfig dependencies; MFD_AT91_USART
- Supply shared data for child-devices; madera-core
- Use new of_node_name_eq() API call; max77620, stmpe
- Use managed resources (devm_*); tps65218
- Comment descriptions; ingenic-tcu
- Coding style; madera-core
- Bug Fixes
- Fix section mismatches; twl-core, db8500-prcmu
- Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
- IRQ related fixes; tps6586x
- Ensure proper initialisation sequence; qcom_rpm
- Repair potential memory leak; cros_ec_dev
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Merge tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Device Support
- Add support for Power Supply to AXP813
- Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
- Add support for UART to Exynos LPASS
Fix-ups:
- Use supplied MACROS; ti_am335x_tscadc
- Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
- Regmap changes; bd9571mwv, wm5110-tables
- Kconfig dependencies; MFD_AT91_USART
- Supply shared data for child-devices; madera-core
- Use new of_node_name_eq() API call; max77620, stmpe
- Use managed resources (devm_*); tps65218
- Comment descriptions; ingenic-tcu
- Coding style; madera-core
Bug Fixes:
- Fix section mismatches; twl-core, db8500-prcmu
- Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
- IRQ related fixes; tps6586x
- Ensure proper initialisation sequence; qcom_rpm
- Repair potential memory leak; cros_ec_dev"
* tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (25 commits)
mfd: exynos-lpass: Enable UART module support
mfd: mc13xxx: Fix a missing check of a register-read failure
mfd: cros_ec: Add commands to control codec
mfd: madera: Remove spurious semicolon in while loop
mfd: rave-sp: Fix typo in rave_sp_checksum comment
mfd: ingenic-tcu: Fix bit field description in header
mfd: tps65218: Use devm_regmap_add_irq_chip and clean up error path in probe()
mfd: Use of_node_name_eq() for node name comparisons
mfd: cros_ec_dev: Add missing mfd_remove_devices() call in remove
mfd: axp20x: Add supported cells for AXP803
mfd: axp20x: Re-align MFD cell entries
mfd: axp20x: Add AC power supply cell for AXP813
mfd: wm5110: Add missing ASRC rate register
mfd: qcom_rpm: write fw_version to CTRL_REG
mfd: tps6586x: Handle interrupts on suspend
mfd: madera: Add shared data for accessory detection
mfd: at91-usart: Add platform dependency
mfd: bd9571mwv: Add volatile register to make DVFS work
mfd: ab8500-core: Return zero in get_register_interruptible()
mfd: tmio: Typo s/use use/use/
...
Parts of the AXP803 are compatible with their counterparts on the AXP813.
These include the GPIO, ADC, AC and battery power supplies.
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
In the axp20x driver, the various mfd_cell lists had varying amounts
of indentation, sometimes even within the same list. For the axp288,
there's no alignment at all.
Re-align the right hand side of the assignments with the least amount
of tabs possible. Also collapse the closing bracket and the opening
bracket of the next entry onto the same line for the axp288, to be
consistent with all the other mfd_cell lists.
This patch is whitespace change only. No functionality is modified.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As axp20x-ac-power-supply now supports AXP813, add a cell for it.
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>
Reviewed-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP20X_OFF define is an actual specific bit, define it as such.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Priit Laes <plaes@plaes.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the bitops.h header as we need it, alphabetize header order.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Priit Laes <plaes@plaes.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The AXP806 can operate in a standalone "self-working" mode, in which it
is also responsible for power control of the overall system. This mode
is similar to the master mode, but the EN/PWRON pin functions as a power
button, instead of a level-triggered enable switch.
This patch adds code checking for the new "x-powers,self-working-mode"
property, and a separate mfd_cell list that includes the power button
(PEK) sub-device.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Icenowy Zheng <icenowy@aosc.io>
Tested-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
When AXP806 support was added, POK was incorrectly expanded to PWROK.
However, the datasheet lists them as POK[LSNP], which is the same as
on the AXP288. Furthermore, the registers associated with POK functions
are the same as the PEK on the other AXP PMICs. This suggests that
"POK" means "Power On Key", much like "PEK" means "Power Enable Key",
instead of "Power OK".
This patch changes the "PWROK" prefix to "POK" for these interrupts.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Previously we were open coding the interrupts for the various mfd
cells. This made the code somewhat long due to pretty-formatting.
This patch convert those into one-line declarations with DEFINE_RES_IRQ,
making the code shorter and easier to read.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The axp20x driver has lots of mfd_cell and resource structs.
These can all be const-ified.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As axp20x-battery-power-supply now supports AXP813, add a cell for it.
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This makes the axp20x_adc driver probe with platform device id
"axp813-adc".
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This makes AXP209 and AXP22x ADCs probe first via DT and then by
fallback via platform.
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The input current limit bits get updated by the charger detection logic,
so we should not cache the contents of this register.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As GPIO/pinctrl driver now supports AXP813, add a cell for it.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Now that axp20x-regulator supports AXP813, we can add a cell for it
to enable it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
According to their datasheets, the AXP221, AXP223, AXP288, AXP803,
AXP809 and AXP813 PEK have different values for startup time bits from
the AXP20X, let's use the platform device id with the correct values.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP813 PMIC is normally used with Allwinner's A83T SoC.
It has the same range of functions as other X-Powers PMICs, such as
DC-DC buck converter and linear regulator outputs, AC-IN and VBUS
power supplies, power button trigger, GPIOs, ADCs, and a battery
charger.
Note that the IRQ table given in the datasheet is incorrect: in IRQ
enable/status registers 1, there are separate IRQs for ACIN and VBUS,
instead of bits [7:5] being the same as bits [4:2]. So it shares the
same IRQs as the AXP803, rather than the AXP288.
This patch adds basic mfd support for it, with only the power button
enabled.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As axp20x-regulator now supports AXP803, add a cell for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
AXP803 is a new PMIC chip produced by X-Powers, usually paired with A64
via RSB bus. The PMIC itself is like AXP288, but with RSB support and
dedicated VBUS and ACIN.
Add support for it in the axp20x mfd driver.
Currently only power key function is supported.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP20X and AXP22X PMICs can have a battery as power supply.
This patch adds the AXP20X/AXP22X battery driver to the MFD cells of the
AXP209, AXP221 and AXP223 MFD.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The CHRG_CTRL1 and CHRG_CTRL2 registers are made for controlling
different battery charging settings such as the constant current charge
value.
The AXP22X also have a third register CHRG_CTRL3 which has settings for
battery charging too.
This adds the CHRG_CTRL1, CHRG_CTRL2 and CHRG_CTRL3 registers to the
list of writeable registers for AXP20X and AXP22X PMICs.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP20X and AXP22X PMICs expose the status of AC power
supply.
This adds the AC power supply driver to the MFD cells of the AXP22X
PMICs.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This adds the AXP20X/AXP22x ADCs driver to the mfd cells of the AXP209,
AXP221 and AXP223 MFD.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The registers 0x56 and 0x57 of AXP22X PMIC store the value of the
internal temperature of the PMIC.
This patch modifies the name of these registers from AXP22X_PMIC_ADC_H/L
to AXP22X_PMIC_TEMP_H/L so their purpose is clearer.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
commit b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
was intended to fix the case where a board uses an AXP806 in slave mode,
but the boot loader leaves it in master mode for lack of AXP806 support.
But now the driver breaks on boards where the PMIC is operating in master
mode. This patch lets the driver use the new device tree property
"xpowers,master-mode" to set the correct operating mode for the board.
Fixes: 8824ee8573 ("mfd: axp20x: Add support for AXP806 PMIC")
Signed-off-by: Rask Ingemann Lambertsen <rask@formelder.dk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP806 supports either master/standalone or slave mode.
Slave mode allows sharing the serial bus, even with multiple
AXP806 which all have the same hardware address.
This is done with extra "serial interface address extension",
or AXP806_BUS_ADDR_EXT, and "register address extension", or
AXP806_REG_ADDR_EXT, registers. The former is read-only, with
1 bit customizable at the factory, and 1 bit depending on the
state of an external pin. The latter is writable. Only when
the these device addressing bits (in the upper 4 bits of the
registers) match, will the device respond to operations on
its other registers.
The AXP806_REG_ADDR_EXT was previously configured by Allwinner's
bootloader. Work on U-boot SPL support now allows us to switch
to mainline U-boot, which doesn't do this for us. There might
be other bare minimum bootloaders out there which don't to this
either. It's best to handle this in the kernel.
This patch sets AXP806_REG_ADDR_EXT to 0x10, which is what we
know to be the proper value for a standard AXP806 in slave mode.
Afterwards it will reinitialize the regmap cache, to purge any
invalid stale values.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP223 shares most of its logic with the AXP221 but has some
differences for the VBUS power supply driver. Thus, to probe the driver
with the correct compatible, the AXP221 and the AXP223 now have separate
MFD cells.
AXP221 MFD cells are renamed from axp22x_cells to axp221_cells to avoid
confusion.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The axp288 pmic has a lot more volatile registers then we were
listing in axp288_volatile_ranges, fix this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The R in PEK_DBR stands for rising, so it should be mapped to
AXP288_IRQ_POKP where the last P stands for positive edge.
Likewise PEK_DBF should be mapped to the falling edge, aka the
_N_egative edge, so it should be mapped to AXP288_IRQ_POKN.
This fixes the inverted powerbutton status reporting by the
axp20x-pek driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The axp288 has the following irqs 2 times: VBUS_FALL, VBUS_RISE,
VBUS_OV. On boot / reset the enable flags for both the normal and alt
version of these irqs is set.
Since we were only listing the normal version in the axp288 regmap_irq
struct, we were never disabling the alt versions of these irqs.
Add the alt versions to the axp288 regmap_irq struct, so that these
get properly disabled.
Together with the other axp288 fixes in this series, this fixes the axp288
irq contineously triggering.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The interrupt line of the entire family of axp2xx pmics is active-low,
for devicetree enumerated irqs, this is dealt with in the devicetree.
ACPI irq resources have a flag field for this too, I tried using this
on my CUBE iwork8 Air tablet, but it does not contain the right data.
The dstd shows the irq listed as either ActiveLow or ActiveHigh,
depending on the OSID variable, which seems to be set by the
"OS IMAGE ID" in the BIOS/EFI setup screen.
Since the acpi-resource info is no good, simply pass in IRQF_TRIGGER_LOW
on the axp288.
Together with the other axp288 fixes in this series, this fixes the axp288
irq contineously triggering.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP806 supports either master/standalone or slave mode.
Slave mode allows sharing the serial bus, even with multiple
AXP806 which all have the same hardware address.
This is done with extra "serial interface address extension",
or AXP806_BUS_ADDR_EXT, and "register address extension", or
AXP806_REG_ADDR_EXT, registers. The former is read-only, with
1 bit customizable at the factory, and 1 bit depending on the
state of an external pin. The latter is writable. Only when
the these device addressing bits (in the upper 4 bits of the
registers) match, will the device respond to operations on
its other registers.
Add these 2 registers to the regmap so we can access them.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
AXP22x has also some different register map than axp20x, they're also
added here.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Now that we have a GPIO driver for the AXP209, we can add it to our MFD.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP806 is a new PMIC that is paired with Allwinner's A80
SoC, along with a master AXP809 PMIC.
This PMIC has a new register layout, and supports some functions not
seen in other X-Powers PMICs, such as master-slave mode, or having
multiple AXP806 PMICs on the same bus with address space extension,
or supporting both I2C and RSB mode. I2C has not been tested.
This patch adds support for the interrupts of the PMIC. A regulator
sub-device is enabled, but actual regulator support will come in a
later patch.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The kernel expects the power_off function to not return, and if it does
it panics. Add a slight delay after the i2c write which turns off power
through the PMIC, to give capacitors etc. some time to drain.
Without this the kernel lives on long enough after the poweroff to
print the following on the serial console on my Mele A1000G quad:
[ 248.583588] reboot: Power down
[ 248.600490] Kernel pa
With the delay the start of printing "Kernel panic" is gone.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The axp22x pmic has a bunch of volatile registers besides the interrupt
ones, extend axp22x_volatile_ranges with these.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
As a counterpart to the usb power_supply cell, this commit adds an AC
power_supply cell to the axp20x driver.
Still missing are the RTC backup battery and the main battery charger
cells.
Signed-off-by: Michael Haas <haas@computerlinguist.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP809 is a new PMIC that is paired with Allwinner's A80
SoC, along with a slave AXP806 PMIC.
This PMIC is quite similar to the earlier AXP223, though the interrupts
and regulator have changed a bit.
This patch adds support for the interrupts and power button of the PMIC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The AXP223 is a new PMIC commonly paired with Allwinner A23/A33 SoCs.
It is functionally identical to AXP221; only the regulator default
voltage/status and the external host interface are different.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This fixes some leftover code style issues in the axp20x core.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The axp20x driver assumes the device is i2c based. This is not the
case with later chips, which use a proprietary 2 wire serial bus
by Allwinner called "Reduced Serial Bus".
This patch follows the example of mfd/wm831x and splits it into
an interface independent core, and an i2c specific glue layer.
MFD_AXP20X and the new MFD_AXP20X_I2C are changed to tristate
symbols, allowing the driver to be built as modules.
Whitespace and other style errors in the moved i2c specific code
have been fixed. Included but unused header files are removed as
well.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Supply a backdated copyright notice.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Hans de Goede