Currently a read failure by bq25890_field_read on F_DEV_REV is returning
an error in id instead of rev. Fix this by returning the value in rev.
Addresses-Coverity: ("Copy-paste error")
Fixes: d20267c9a9 ("power: supply: bq25890_charger: Add support of BQ25892 and BQ25896 chips")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Investigation on the AXP803 shows that VBUS_PLUGIN/VBUS_REMOVAL IRQs are
triggered on the rising/falling edge of AXP20X_PWR_STATUS_VBUS_USED. The
reason IRQs do not arrive while N_VBUSEN/DRIVEVBUS is high is because
AXP20X_PWR_STATUS_VBUS_USED also never goes high.
This also means that if VBUS is online, a VBUS_REMOVAL IRQ is received
immediately on setting N_VBUSEN/DRIVEVBUS high (and VBUS_PLUGIN shortly
after it is set back low). This was also verified to be the case when
manually offlining VBUS through AXP20X_VBUS_PATH_SELECT.
As long as VBUS is online, a present->absent transition necessarily
implies an online->offline transition. Since will cause an IRQ, there is
no need to poll while VBUS is online.
To ensure the driver's view of VBUS online status remains accurate,
unconditionally poll once when receiving an IRQ and when resuming. If
VBUS is still online at that time, polling will cease until the next
VBUS_REMOVAL IRQ.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The USB power supply input can be used as a wakeup source. Hook up the
VBUS_PLUGIN IRQ to trigger wakeup based on userspace configuration.
To do this, we must remember the list of IRQs for the life of the
device. To know how much space to allocate for the flexible array
member, we switch from using a NULL sentinel to using an array length.
Because we now depend on the specific order of the IRQs (we assume
VBUS_PLUGIN is first and always present), failing to acquire an IRQ
during probe must be a fatal error.
To avoid spuriously waking up the system when the USB power supply is
not configured as a wakeup source, we must explicitly disable all non-
wake IRQs during system suspend. This is because the SoC's NMI input is
shared among all IRQs on the AXP PMIC. Due to the use of regmap-irq, the
individual IRQs within the PMIC are nested threaded interrupts, and are
therefore not automatically disabled during system suspend.
The upshot is that if any other device within the MFD (such as the power
key) is an enabled wakeup source, all enabled IRQs within the PMIC will
cause wakeup. We still need to call enable_irq_wake() when we *do* want
wakeup, in case those other wakeup sources on the PMIC are all disabled.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
AXP803/AXP813 have a flag that enables/disables the USB power supply
input. Allow control of this flag via the ONLINE property on those
variants.
It may be necessary to offline the USB power supply input when using
the USB port in OTG mode, or to allow userspace to disable charging.
When the USB VBUS input is disabled via the PATH_SEL bit, the VBUS_USED
bit in PWR_INPUT_STATUS is cleared, so there is no change needed when
getting the property.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Instead of ad-hoc variant ID checks throughout the code, let's start
moving the variant-specific details to a match structure. This allows
for future flexibility, and it better matches the other axp20x power
supply drivers.
This commit removes most variant checks from axp20x_usb_power_probe().
Other parts of the driver still do ID matching; they are left unchanged
for now.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Fix the following sparse warning:
drivers/power/supply/ucs1002_power.c:492:5: warning: symbol 'ucs1002_regulator_enable' was not declared. Should it be static?
Fixes: a3d70dacc7 ("power: suppy: ucs1002: disable power when max current is 0")
Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Add bq25892, bq25895 and bq25896 to list of supported device IDs for
DeviceTree and I2C.
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Support BQ25892 and BQ25896 chips by this driver. They shared one chip
ID 0, so distinquish them by device revisions (2 for 25896 and 1 for
25892).
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The "mode" variable is an enum and in this context GCC treats it as an
unsigned int so the error handling is never triggered.
Fixes: 51d0756604 ("bq20z75: Add support for charge properties")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This driver's remove path calls cancel_delayed_work().
However, that function does not wait until the work function
finishes. This could mean that the work function is still
running after the driver's remove function has finished,
which would result in a use-after-free.
Fix by calling cancel_delayed_work_sync(), which ensures that
that the work is properly cancelled, no longer running, and
unable to re-schedule itself.
This issue was detected with the help of Coccinelle.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This member of struct axp20x_usb_power is not used anywhere.
Remove it.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The AC power supply input can be used as a wakeup source. Hook up the
ACIN_PLUGIN IRQ to trigger wakeup based on userspace configuration.
To do this, we must remember the list of IRQs for the life of the
device. To know how much space to allocate for the flexible array
member, we switch from using a NULL sentinel to using an array length.
Because we now depend on the specific order of the IRQs (we assume
ACIN_PLUGIN is first and always present), failing to acquire an IRQ
during probe must be a fatal error.
To avoid spuriously waking up the system when the AC power supply is
not configured as a wakeup source, we must explicitly disable all non-
wake IRQs during system suspend. This is because the SoC's NMI input is
shared among all IRQs on the AXP PMIC. Due to the use of regmap-irq, the
individual IRQs within the PMIC are nested threaded interrupts, and are
therefore not automatically disabled during system suspend.
The upshot is that if any other device within the MFD (such as the power
key) is an enabled wakeup source, all enabled IRQs within the PMIC will
cause wakeup. We still need to call enable_irq_wake() when we *do* want
wakeup, in case those other wakeup sources on the PMIC are all disabled.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
AXP803/AXP813 have a flag that enables/disables the AC power supply
input. Allow control of this flag via the ONLINE property on those
variants.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
AXP803/AXP813 have a flag that enables/disables the AC power supply
input. This flag does not affect the status bits in PWR_INPUT_STATUS.
Its effect can be verified by checking the battery charge/discharge
state (bit 2 of PWR_INPUT_STATUS), or by examining the current draw on
the AC input.
Take this flag into account when getting the ONLINE property of the AC
input, on PMICs where this flag is present.
Fixes: 7693b5643f ("power: supply: add AC power supply driver for AXP813")
Cc: stable@vger.kernel.org
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
"Battery mode" is the name of the register, the bit manipulated by this
code is "CAPACITY_MODE" (Smart Battery System Specifications).
Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
When a device has no support to get the charger number of ports, it
doesn't have to result in a dev_err(), print saying "Could not get
charger port count" using a dev_info() would suffice. In such case,
the dev_info() message is already printed but the dev_err() is annoying,
specially, on those devices that doesn't support the command. So remove
the dev_err().
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Notify core through power_supply_changed() in case of changes in state
of charge and power supply status. This is useful for user-space to
efficiently update current battery level.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
For configuration of fuel gauge alert for a low level state of charge
interrupt we add a function to config level threshold and a device tree
binding property to set it in flatned device tree node.
Now we can use "maxim,alert-low-soc-level" property with the values from
1% up to 32% to configure alert interrupt threshold.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
According datasheet max17040 has a pin for alert host for low SOC.
This pin can be used as external interrupt, so we need to check for
interrupts assigned for device and handle it.
In handler we are checking and storing fuel gauge registers values
and send an uevent to notificate user space, so user space can decide
save work or turn off since the alert demonstrate that the battery may
no have the power to keep the system turned on for much longer.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
There are some deviations between the real resistance and the ideal
resistance of coulomb counter, which will affect the accuracy of
the coulomb counter, thus calibrate the real resistance of coulomb
counter to improve the accuracy.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Optimize the battery internal resistance in a certain temerature to
get a accurate battery internal resistance.
Signed-off-by: Yuanjiang Yu <yuanjiang.yu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Since the battery internal resistance can be changed with the temperature
changes, thus add a resistance temperature table support to look up
the accurate battery internal resistance in a certain temperature.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We need the of_match table if we want to use the compatible string in
the pmic's child node and get the charger driver loaded automatically.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The MAX17055 is very similar to the MAX17042 so extend the driver.
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
For some devices userspace needs the ability to completely cut the power
to the USB devices connected to the charge controller. An easy way to
achieve this is by allowing 0 as a valid max current and forcibly disable
the output in that case, as well as enable it again if the regulator is
in use and a non-0 max current is set.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The ADC in the JZ4740 can work either in high-precision mode with a 2.5V
range, or in low-precision mode with a 7.5V range. The code in place in
this driver will select the proper scale according to the maximum
voltage of the battery.
The JZ4770 however only has one mode, with a 6.6V range. If only one
scale is available, there's no need to change it (and nothing to change
it to), and trying to do so will fail with -EINVAL.
Fixes: fb24ccfbe1 ("power: supply: add Ingenic JZ47xx battery driver.")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Artur Rojek <contact@artur-rojek.eu>
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The driver forgets to unregister the notifier in remove.
Add the call to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
The bd70528 charger driver is probed by MFD driver. Add MODULE_ALIAS
in order to allow udev to load the module when MFD sub-device cell for
charger is added.
Fixes: f8c7f7ddd8 ("power: supply: Initial support for ROHM BD70528 PMIC charger block")
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Fix inconsistent IS_ERR and PTR_ERR in ab8500_charger_probe().
The proper pointer to be passed as argument is di->adc_main_charger_c
This bug was detected with the help of Coccinelle.
Fixes: 97ab78bac5 ("power: supply: ab8500_charger: Convert to IIO ADC")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Add 'static' keyword to internal function as reported by sparse
using the following configuration:
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
Fixes: d4ee021c41 ("power: supply: cpcap-charger: Limit voltage to 4.2V for battery")
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This patch adds support for the coulomb counter calibration on init. We do
this by polling for now, and only add partial calibration done interrupt
support.
Then later on when we know for sure we have the calibration done interrupt
available in the device tree, we can switch to using the calibration done
interrupt.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We can simplify code in the later patches by reading and saving the
integrator register CCI. Let's also fix a comment typo for register range
naming while at it.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We can use sign_extend32() here to simplify things. And let's fix the
comment for CCM register, that contains the calibration offset.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We can simplify cpcap_battery_cc_raw_div() with div_s64.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We can simplify cpcap_battery_cc_raw_div() a bit by moving the units per
lsb to ddata.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Let's allow reconfiguring the cpcap-charger max charge voltage and
default to 4.2V that should be safe for the known users.
This allows the users to use 4.35V for the extra capacity if really
needed at a cost of probably shorter battery life. We check the
constant charge voltage limit set by the battery.
Some pieces of the property setting code is based on an earlier patch
from Pavel Machek <pavel@ucw.cz> but limited to configuring the charge
voltage for now.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
With cpcap-charger now using 4.2V instead of 4.35V, we never reach
POWER_SUPPLY_CAPACITY_LEVEL_FULL unless we handle the lowered charge
voltage.
Let's do this by implementing POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
and assume anything at that level or higher is a full battery.
Let's also make it configurable for users who may still want to
reconfigure it, and notify the charger if supported by the charger.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We are currently using a wrong ADC range for the battery detection.
The ADC returns the battery temperature if connected.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
We can get the low voltage interrupt trigger sometimes way too early,
maybe because of CPU load spikes. This causes orderly_poweroff() be
called too easily.
Let's check the voltage before orderly_poweroff in case it was not
yet a permanent condition. We will be getting more interrupts anyways
if the condition persists.
Let's also show the measured voltages for low battery and battery
empty warnings since we have them.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This immutable branch contains CPCAP charger changes, which
touch ARM and power-supply subsystem.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
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Merge tag 'psy-cpcap-charge-volt-limit-signed' into psy-next
Immutable branch between arm and power-supply for cpcap-charger
This immutable branch contains CPCAP charger changes, which
touch ARM and power-supply subsystem.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
There have been some cases of droid4 battery bulging that seem to be
related to being left connected to the charger for several weeks.
It is suspected that the 4.35V charge voltage configured for the battery
is too much in the long run, so lets limit the charge voltage to 4.2V.
It could also be that the batteries are just getting old.
We don't really want to just change the charge voltage to 4.2V as Android
may have charged the battery to 4.35V as pointed out by Pavel Machek.
To add checks for battery voltage, the driver needs to understand the
voltage it's charging at, and also needs to better understand it's
charger state. Right now it only understands connect and disconnect,
while now we need to know also a connected state but not charging.
So let's add better charger state handling with help of chrgcurr2 interrupt
for detecting charge full and retry, and add a check for battery voltage
before we start charging. And then we finally can lower the charge voltage
to 4.2V.
Note that we've been using the same register values as the Android distros
on droid4, so it is suspected that the same problem also exists in Android.
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rob Herring <robh+dt@kernel.org>
Reported-by: Merlijn Wajer <merlijn@wizzup.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
platform_get_irq_byname() might return -errno which later would be
cast to an unsigned int and used in request_irq().
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
When requesting interrupt fails, free only interrupts already requested,
not all of them.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
It is logical to cleanup in probe's error path in reverse order to
previous actions. It also makes easier to add additional goto labels
within this error path.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
