commit 0cf48167b8 upstream.
The gauge requires us to clear the status bits manually for some alerts
to be properly dismissed. Previously the IRQ was configured to react only
on falling edge, which wasn't technically correct (the ALRT line is active
low), but it had a happy side-effect of preventing interrupt storms
on uncleared alerts from happening.
Fixes: 7fbf6b731b ("power: supply: max17042: Do not enforce (incorrect) interrupt trigger type")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 223a3b8283 upstream.
On Galaxy S3 (i9300/i9305), which has the max17047 fuel gauge and no
current sense resistor (rsns), the RepSOC register does not provide an
accurate state of charge value. The reported value is wrong, and does
not change over time. VFSOC however, which uses the voltage fuel gauge
to determine the state of charge, always shows an accurate value.
For devices without current sense, VFSOC is already used for the
soc-alert (0x0003 is written to MiscCFG register), so with this change
the source of the alert and the PROP_CAPACITY value match.
Fixes: 359ab9f5b1 ("power_supply: Add MAX17042 Fuel Gauge Driver")
Cc: <stable@vger.kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Suggested-by: Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
Signed-off-by: Henrik Grimler <henrik@grimler.se>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e660dbb68c upstream.
max17042_set_soc_threshold gets called with offset set to 1, which means
that minimum threshold value would underflow once SOC got down to 0,
causing invalid alerts from the gauge.
Fixes: e5f3872d20 ("max17042: Add support for signalling change in SOC")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The power_supply_get_battery_info() fails if device-chemistry property
is missing in a device-tree because error variable is propagated to the
final return of the function, fix it.
Fixes: 4eef766b7d ("power: supply: core: Parse battery chemistry/technology")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
There's no need to print a message on every change in battery percentage
on regular log levels.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Prepared by checking the datasheets of max17042, max17047/50
and max170455 for differences in register maps.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This register is same as in MAX17047 and MAX17050, so there's no need
for custom casing it.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
SMB347 can supply power to USB VBUS, implement the USB VBUS regulator.
USB VBUS needs to be powered for switching OTG-cable USB port into host
mode.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Pin control needs to be activated by setting the enable bit, otherwise
hardware rejects all pin changes. Previously this stayed unnoticed on
Nexus 7 because pin control was enabled by default after rebooting from
downstream kernel, which uses driver that enables the bit and charger
registers are non-volatile until power supply (battery) is disconnected.
Configure the pin control enable bit. This fixes the potentially
never-enabled charging on devices that use pin control.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Utilize generic regmap caching in order to avoid unnecessary slow I2C
accesses to all constant registers each time the supply status updated
and remove local caching of charger state to make code cleaner.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The smb347_set_writable() is used by interrupt handler and outside of it.
The interrupt should be disabled when the function is used outside of
interrupt handler in order to prevent racing with the interrupt context.
Add new parameter to smb347_set_writable() that allows to disable IRQ.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The only way to reset the BeagleV Starlight v0.9 board[1] properly is to
tell the PMIC to reset itself which will then assert the external reset
lines of the SoC, USB hub and ethernet phy.
This adds a driver to register a reset handler to do just that.
[1] https://github.com/beagleboard/beaglev-starlight
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
All bits of STATUS register are already defined (see STATUS_SMN_BIT and
further) so there is no need to define status SoC threshold min/max
values one more time.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reading status register can fail in the interrupt handler. In such
case, the regmap_read() will not store anything useful under passed
'val' variable and random stack value will be used to determine type of
interrupt.
Handle the regmap_read() failure to avoid handling interrupt type and
triggering changed power supply event based on random stack value.
Fixes: 39e7213edc ("max17042_battery: Support regmap to access device's registers")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This extends the struct power_supply_battery_info with a
"technology" field makes the core DT parser optionally obtain
this from the device tree.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit introduces support for NETGEAR ReadyNAS Duo v2.
This device use bit 4 of LED[2:0] Polarity Control Register to indicate
AC Power loss.
For more details about AC loss detection in NETGEAR ReadyNAS Duo v2,
please look at the file:
RND_5.3.13_WW.src/u-boot/board/mv_feroceon/mv_hal/usibootup/usibootup.c
from Netgear GPL sources.
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit prepare driver for another device support.
New power_off_cfg structure describes two most important things: name of
mdio bus and pointer to register setting function. It allow to add new
device with different mdio bus node and other phy register config.
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This immutable branch introduces the MT6360 charger driver,
which requires a new linear range helper.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
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Merge tag 'ib-mt6360-for-5.15-signed' into psy-next
Immutable branch between regulator and power-supply for for 5.15
This immutable branch introduces the MT6360 charger driver,
which requires a new linear range helper.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Rename ChargeOption macros to match the others for ChargeCurrent and
ChargeVoltage and also separate the command & masks macros from the bits of
interest macros for each command. This macro doesn't introduce any
functional change, only code re-org.
Signed-off-by: Bruno Meneguele <bruno.meneguele@smartgreen.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Read voltage_now via IIO and provide the property.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reported-by: kernel test robot <lkp@intel.com> # missing depends on IIO
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Add basic support for the battery charger for MT6360 PMIC
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Reviewed-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Clean up a handful of checkpatch warnings:
- static const char * array should probably be static const char * const
- function arguments should have identifier names
- else should follow close brace '}'
- suspect code indent for conditional statements
- unnecessary parentheses in an if condition
- avoid multiple line dereference
- remove debug showing function execution, ftrace can trace these better
- prefer 'long' over 'long int' as the int is unnecessary
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Use the defined variable "dev" to make the code cleaner.
Co-developed-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
As defined by the Smart Battery Data Specification.
An _AVG suffix is added to the enum values REG_TIME_TO_EMPTY and
REG_TIME_TO_FULL to make the distinction clear.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The Smart Battery Data Specification allows for values 0..65535 mV,
there is no reason to limit the value to 20000.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
In the probe function, when get irq failed, the function
platform_get_irq_byname() logs an error message, so remove
redundant message here.
Co-developed-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
MAX77849 is a combined fuel-gauge, charger and MUIC IC. Notably,
fuel-gauge has dedicated i2c lines and seems to be fully compatible
with max17047. Add new compatible for it reusing max17047 code paths.
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The I2C-bus to the XPower AXP288 is shared between the Linux kernel and
the SoCs P-Unit. The P-Unit has a semaphore which the kernel must "lock"
before it may use the bus. If not explicitly taken by the I2C-driver,
then this semaphore is automatically taken by the I2C-bus-driver for
each I2C-transfer and this is a quite expensive operation.
Explicitly take the semaphore in probe() around the register-accesses
done during probe, so that this only needs to be done once, rather then
once per register-access.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The I2C-bus to the XPower AXP288 is shared between the Linux kernel and
the SoCs P-Unit. The P-Unit has a semaphore which the kernel must "lock"
before it may use the bus. If not explicitly taken by the I2C-driver,
then this semaphore is automatically taken by the I2C-bus-driver for
each I2C-transfer.
Move the AXP20X_CC_CTRL check done in probe() together with the other
register-accesses done in probe, so that we can take the semaphore once
for the entire set of register-accesses.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The I2C-bus to the XPower AXP288 is shared between the Linux kernel and
the SoCs P-Unit. The P-Unit has a semaphore which the kernel must "lock"
before it may use the bus and while the kernel holds the semaphore the CPU
and GPU power-states must not be changed otherwise the system will freeze.
This is a complex process, which is quite expensive. This is all done by
iosf_mbi_block_punit_i2c_access(). To ensure that no unguarded I2C-bus
accesses happen, iosf_mbi_block_punit_i2c_access() gets called by the
I2C-bus-driver for every I2C transfer. Because this is so expensive it
is allowed to call iosf_mbi_block_punit_i2c_access() in a nested
fashion, so that higher-level code which does multiple I2C-transfers can
call it once for a group of transfers, turning the calls done by the
I2C-bus-driver into no-ops.
Userspace power-supply API users typically will read all provided
properties in one go, refreshing the last read values when
power_supply_changed() is called by the driver and/or periodically
(e.g. every 2 minutes).
The reading of all properties in one go causes the P-Unit semaphore
to quickly be taken and released multiple times in a row. Certain
PMIC registers like AXP20X_FG_RES are even used in multiple properties
so they get read multiple times, leading to a P-Unit take + release
each time the register is read.
As already mentioned the taking of the P-Unit semaphore is a quite
expensive operation and it has also been reported that the
"hammering" of the P-Unit semaphore done by the axp288_fuel_gauge
driver can even cause stability issues with the system as a whole.
Switch over to a scheme where the axp288_fuel_gauge driver keeps
a local copy of all the registers which it uses for properties
and make it only refresh its copy of the registers if the values
are older then 1 minute; or when a fuel-gauge interrupt has
triggered since the last read.
This not only reduces the amount of reads, it also makes the code
do all the reads in one go, rather then reading specific registers
based on which property is being queried. This allows calling
iosf_mbi_block_punit_i2c_access() once before doing all the reads,
so that we now only take the P-Unit semaphore once per update.
Tested-by: Andrejus Basovas <cpp@gcc.lt>
Signed-off-by: Andrejus Basovas <cpp@gcc.lt>
Co-developed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Accessing registers on the AXP288 is quite expensive, so we should avoid
doing unnecessary accesses.
The FG_LOW_CAP_REG never changes underneath us, so we only need to read
it once. Devices with an AXP288 do not have user-replace (let alone
hot-swappable) batteries and the only bit we care about in the
PWR_OP_MODE register is the CHRG_STAT_BAT_PRESENT bit, so we can get
away with only reading the PWR_OP_MODE register once too.
Note that the FG_LOW_CAP_REG is not marked volatile in the regmap, so we
were effectively already reading it once. This change makes this explicit,
this is done as preparation of a further patch which moves all remaining
register accesses in fuel_gauge_get_property() out of that function.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Directly store the struct device pointer in axp288_fg_info, rather then
storing a pointer to the struct platform_device there and then using
"&info->pdev->dev" everywhere.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The I2C-bus to the XPower AXP288 is shared between the Linux kernel and
the SoCs P-Unit. The P-Unit has a semaphore which the kernel must "lock"
before it may use the bus. This semaphore is automatically taken by the
I2C-bus-driver.
The retry on -EBUSY logic in fuel_gauge_reg_readb() likely was added to
deal with the I2C-bus-drive returning -EBUSY when it failed to take the
semaphore, but this really should never happen. The semaphore code even
has a WARN_ON(ret) to log a kernel backtrace if this does somehow happen,
when this happens something is seriously wrong and the system typically
freezes soon afterwards.
TL;DR: the regmap_read() should never fail with -EBUSY so the retries
are unnecessary.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
When fuel_gauge_reg_readb()/_writeb() fails, report which register we
were trying to read / write when the error happened.
Also reword the message a bit:
- Drop the axp288 prefix, dev_err() already prints this
- Switch from telegram / abbreviated style to a normal sentence, aligning
the message with those from fuel_gauge_read_*bit_word()
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Drop the IRQ mapping messages, because they are really not
interesting at all.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The debugfs code is simply just dumping a bunch of registers, the same
information can also easily be gotten through the regmap debugfs
interface or through the i2cdump utility.
I've not used the debugfs interface once in all these years that I've
been working on the axp288_fuel_gauge driver, so lets just remove it.
Note this also removes the temperature-channels from the list of
IIO ADC channels used by the driver, since these were only used in the
debugfs interface.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The values of various defines used in the driver are not aligned
properly when tabsize is set to 8 (I guess they were created with
a different tabsize).
Properly align the defines to make the code easier to read.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
In the function sc27xx_fgu_probe(), when get irq failed,
platform_get_irq() logs an error message, so remove
redundant message here.
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Deal with deferred probe using dev_err_probe so the error is handled
and avoid logging lots probe defer information like the following:
[ 9.125121] cw2015 4-0062: Failed to register power supply
[ 9.211131] cw2015 4-0062: Failed to register power supply
Fixes: b4c7715c10 ("power: supply: add CellWise cw2015 fuel gauge driver")
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This patch adds a driver for PCHG (Peripheral CHarGer). PCHG is a
framework managing power supplies for peripheral devices.
This driver creates a sysfs node for each peripheral charge port:
/sys/class/power_supply/peripheral<n>
where <n> is the index of a charge port.
For example, when a stylus is connected to a NFC/WLC port, the node
returns:
/sys/class/power_supply/peripheral0/
capacity=50
charge_type=Standard
scope=Device
status=Charging
type=Battery
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This file isn't using any AB8500 symbols so drop these includes.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
If we rename the "abx500_chargalg" supply to "ab8500_chargalg"
as it should be named, the existing supplies are supplying that
supply but that was obviously not working since it had the
wrong name.
Now that the dependency kicks in we get a bunch
of NULL references from ab8500_chargalg_external_power_changed()
so check that the workqueue is allocated before we try to
queue work on it.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Drop the entire idea with abx500 being abstract and different from ab8500
in the AB8500 charging drivers. This rids the two identical definitions
of a slew of structs in ab8500-bm.h and makes things less confusion and
easier to understand.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The "abx500" name on the charging algorithm stems from the ambition
to produce a series of these analog basebands, re-using the same
charging algorithm driver. No ASICs beside AB8500 and AB8505 were
ever produced so this terminology is confusing. Rename the
algorithm file and symbols to reflect the more narrow scope.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The kernel already has a static inline for linear interpolation
so use that instead of rolling our own.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out panic and
oops helpers.
There are several purposes of doing this:
- dropping dependency in bug.h
- dropping a loop by moving out panic_notifier.h
- unload kernel.h from something which has its own domain
At the same time convert users tree-wide to use new headers, although for
the time being include new header back to kernel.h to avoid twisted
indirected includes for existing users.
[akpm@linux-foundation.org: thread_info.h needs limits.h]
[andriy.shevchenko@linux.intel.com: ia64 fix]
Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Co-developed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Helge Deller <deller@gmx.de> # parisc
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sebastian Krzyszkowiak
Henrik Grimler
Linus Torvalds
Dmitry Osipenko
Emil Renner Berthing
Krzysztof Kozlowski
Linus Walleij
Pawel Dembicki
Sebastian Reichel
Bruno Meneguele
Andreas Kemnade
Gene Chen
Colin Ian King
Tang Bin
Matthias Schiffer
Nikita Travkin
Hans de Goede
Andrejus Basovas
Peter Robinson
Daisuke Nojiri
Gustavo A. R. Silva
Andy Shevchenko