On the D-Link DIR-685 we get spurious poweroff from
infrared. Since that block (CIR) doesn't even have a
driver this can be safely ignored, we can revisit this
code once we have a device supporting CIR.
On the D-Link DNS-313 we get spurious poweroff from
the power button. This appears to be an initialization
issue: we need to enable the block (start the state
machine) before we clear any dangling IRQ.
This patch fixes both issues.
Fixes: f7a388d6cd ("power: reset: Add a driver for the Gemini poweroff")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Temperature is measured in tenths of degree Celsius.
Fixes: 085bc24d15 ("Add LTC2941/LTC2943 Battery Gauge Driver")
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This patch adds the to_power_supply macro to upcast
a device to a power_supply struct.
This is needed because the same piece of code using
container_of is used in various other places, so we
abstract away such low-level operations via a macro.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ognjen Galic <smclt30p@gmail.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Using explicit struct device variable makes code a bit more readable.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Simplify error unwinding using devm_* allocators. This also
makes driver remove function empty, so remove it.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Add properties for charge empty and charge full thresholds.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The Microsemi Ocelot SoC has a register allowing to reset the MIPS core.
Unfortunately, the syscon-reboot driver can't be used directly (but almost)
as the reset control may be disabled using another register.
Cc: linux-pm@vger.kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* bq27xxx: add bq27521 support
* drop unused imx-snvs-poweroff driver
* improve axp288 driver
* misc. fixes
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Merge tag 'for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- bq27xxx: add bq27521 support
- drop unused imx-snvs-poweroff driver
- improve axp288 driver
- misc fixes
* tag 'for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (32 commits)
power: supply: max17042_battery: Always fall back to default platform-data
power: supply: max17042_battery: Check battery current for status when supplied
MAINTAINERS: Add AXP288 PMIC entry
power: supply: axp288_fuel_gauge: Do not register our psy on (some) HDMI sticks
power: supply: axp288_fuel_gauge: Optimize get_current()
power: supply: axp288_fuel_gauge: Rework get_status()
power: reset: account for const type of of_device_id.data
power: supply: account for const type of of_device_id.data
bq24190: Simplify code in property_is_writeable
power: supply: axp288_fuel_gauge: Get iio-channels once during boot
power: supply: axp288_charger: Properly stop work on probe-error / remove
power: supply: axp288_charger: Simplify extcon cable handling
power: supply: axp288_charger: Use the right property for the input current limit
power: supply: axp288_charger: Pick lower input current limit not higher
power: supply: axp288_charger: Do not cache input current limit value
power: supply: axp288_charger: Remove no longer needed locking
power: supply: axp288_charger: Use regmap_update_bits to set the input limits
power: supply: axp288_charger: Cleanup some double empty lines
power: supply: axp288_charger: Remove charger-enabled state tracking
power: supply: axp288_charger: Add missing newlines to some messages
...
It is possible to have CONFIG_OF enabled on x86 builds, where we have no
firmware provided max17042_platform_data. The CONFIG_OF implementation of
max17042_get_pdata would return NULL in this case, causing the probe to
fail.
Instead always fallback to the default platform-data, as used on x86 sofar,
when there is no firmware provided pdata, independent of CONFIG_OF.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Even though the system is supplied, it may still be discharging if the
supply is e.g. only delivering 5V 0.5A. Check the avg battery current if
available for more accurate status reporting.
Cc: James <kernel@madingley.org>
Suggested-by: James <kernel@madingley.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The Intel Compute Stick (Cherry Trail version) and the Meegopad T08 HDMI
stick, both use an axp288 PMIC. They also both have this wired up in such
a way that the detection logic in the PMIC claims that a valid battery is
present, resuling in GNOME and KDE showing a full-battery in their status
bar and power-settings, while these devices do not have a battery.
For lack of a better fix add a DMI blacklist and do not register the
axp288_fuel_gauge psy on devices on the blacklist.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
First check the discharge current, and when that is non 0 use that without
also checking the charge current (which will be 0 then). This makes
get_current() do only 1 i2c read instead of 2 when on battery.
This is esp. important given the pmic i2c bus mutex stuff used on boards
with an axp288 because the SoC's own punit also may access the axp288,
which makes i2c accesses more expensive then normal.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Relying on the (dis)charge current reporting for reporting FULL back to
userspace does not work really well and often leads to the reported status
getting stuck at e.g. 98/99% (the fuelgauge is not perfect) for hours.
What happens is that when the battery is full the axp288 keeps charging it
with a very low current. Until it is really really full and once really
really full, some inaccuracies in the adc lead to it then sometimes
reporting a small discharging rate, even though an external pwr source is
used. So we end up with a status of "charging" for hours after the battery
is actually already full and sometimes this then flip-flops to discharging.
This commit fixes this by first checking if a valid Vbus is present and if
it is present using the fuel-gauge's reported percentage to check for a
full battery.
This commit also changes how get_status() determines if the battery is
charging or discharging when not reporting it as full. We still use the
current direction for this, but instead of reading 4 extra registers for
this (2 16 bit regs), simplify things by using the current-direction bit
in the power-status register, which already gets read anyways.
This also reduces the amount of i2c reads to 1 when on battery and 2
when a valid Vbus is present.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This driver creates a const structure that it stores in the data
field of an of_device_id array.
Add const to the declaration of the location that receives a value
from the data field to ensure that the compiler will continue to check
that the value is not modified and remove the const-dropping cast on
the access to the data field.
Done using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This driver creates two const structures that it stores in the data
field of an of_device_id array.
The data field of an of_device_id structure has type const void *, so
there is no need for a const-discarding cast when putting const values
into such a structure.
Furthermore, adding const to the declaration of the location that
receives a const value from such a field ensures that the compiler
will continue to check that the value is not modified. The
const-discarding cast on the extraction from the data field is thus
no longer needed.
Done using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Simplify function that should be trivial.
Signed-off-by: Pavel machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Get iio-channels once during boot, delaying the probe if the axp288_adc
drivers has not loaded yet, instead of getting them on demand each time
we need them.
This fixes the following errors in dmesg:
axp288_fuel_gauge axp288_fuel_gauge: ADC charge current read failed:-19
Which were caused by the ondemand iio-channel read code not finding the
channel when the axp288_adc driver had not loaded yet.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Properly stop any work we may have queued on probe-errors / remove.
Rather then adding a remove driver callback for this, and goto style
error handling to probe, use a devm_action for this.
The devm_action gets registered before we register any of the extcon
notifiers which may queue the work, devm does cleanup in reverse order,
so this ensures that the notifiers are removed before we cancel the work.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Simplify extcon cable handling using the new
devm_extcon_register_notifier_all function to listen to all cables
in one go.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Use the right property for the input current limit and make it writable.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The code before this commit would pick 900 mA when asking for an input
current limit of 600mA, rather then 500 mA, not good.
While touching almost all code using the silly xxxMA defines anyways,
also get rid of these simply typing out the numbers and switch the
unit to uA as that is the psy class standard unit for currents.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The hardware may change this underneath us.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Now that we use regmap to do read-modify-write ops everywhere, we can
rely on the regmap lock and no longer need our own lock.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Use regmap_update_bits in axp288_charger_set_vbus_inlmt, instead of DIY
code.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
While we are doing cleanups, also remove some double blank lines.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The extcon code is the only one to trigger our worker (outside of the
initial run) and we can rely on it to only call us if things have
changed, so there is no need to track the charger-enabled state.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Add missing (terminating) "\n"-s to some dev_dbg messages.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Before this commit we were relying solely on the extcon interface for
cable detection, including to determine if a cable providing vbus is
connected at all. This caused us to turn off charging at boot, because
when we run the initial state processing the axp288-extcon driver is still
running charger-type detection most of the time, so all charger cable
types read as disconnected when we run the initial state processing.
This commit reworks the axp288_charger_extcon_evt_worker flow to use the
VBUS_VALID bit from the PWR_INPUT_STATUS register to determine if we
should turn charging on/off. Note this is the same bit as we use for the
online property.
If VBUS_VALID is set, but the extcon code has not completed the charger
type detection yet, we now simply bail leaving things as configured by
the BIOS (we will get a notifier call when the extcon code is done and
reschedule the axp288_charger_extcon_evt_worker).
The extcon code is the only one to trigger the worker (outside of the
initial run) and we can rely on it to only call us if things have changed,
so while we are completely refactoring axp288_charger_extcon_evt_worker,
also remove the code to check if the state has changed.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
There's no user of it in kernel now and it basically functions the same
as the generic syscon-poweroff.c to which we have already switched.
So let's remove it.
Cc: Robin Gong <yibin.gong@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
When PSHOLD in a Qualcomm platform is deasserted the PMIC will perform
either a power off or a restart of the system. The action to take is
configured in the PON block, which is controlled by a separate driver.
As the configuration logic was added to the pm8941-pwrkey driver the
comment in do_msm_poweroff() is no longer valid and the name
do_msm_restart() is misleading. Update the naming and drop the comment.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This driver creates a number of const structures that it stores in the
data field of an of_device_id array.
The data field of an of_device_id structure has type const void *, so
there is no need for a const-discarding cast when putting const values
into such a structure.
Furthermore, adding const to the declaration of the location that
receives a const value from such a field ensures that the compiler
will continue to check that the value is not modified. The
const-discarding cast on the extraction from the data field is
thus no longer needed.
Done using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This adds basic support for BQ27521 battery monitor, used in Nokia N9
and N950. In particular, battery voltage is important to be able to
tell when the battery is almost empty. Emptying battery on N950 is
pretty painful, as flasher needs to be used to recover phone in such case.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Andrew F. Davis <afd@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Now that drivers/i2c/busses/i2c-cht-wc.c uses
"input-current-limit-from-supplier" instead of "extcon-name" the last
user of the bq24190 extcon code is gone, remove it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The driver sets the fuel gauge to continuous monitoring on startup, for
the models that support this. When the board shuts down, the chip remains
in that mode, causing a few mA drain on the battery every 2 or 10 seconds.
This patch registers a shutdown handler that turns off the monitoring to
prevent this battery drain.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The platform_get_irq_byname() function returns -1 if an error occurs.
zero or positive number on success. platform_get_irq_byname() error
checking for zero is not correct.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
If an error occurs when we enable the backup battery charging, we should
go through the error handling path directly.
Before commit db43e6c473 ("ab8500-bm: Add usb power path support") this
was the case, but this commit has added some code between the last test and
the 'out' label.
So, in case of error, this added code is executed and the error may be
silently ignored.
Fix it by adding the missing 'goto out', as done in all other error
handling paths.
Fixes: db43e6c473 ("ab8500-bm: Add usb power path support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
'ret' is know to be 0 at this point, because it has not been updated by the
the previous call to 'abx500_mask_and_set_register_interruptible()'.
Fix it by updating 'ret' before checking if an error occurred.
Fixes: 84edbeeab6 ("ab8500-charger: AB8500 charger driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Should be discharging_max_duration_ms, not charging_max_duration_ms.
Signed-off-by: Ryosuke Saito <raitosyo@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This change resolves a new compile-time warning
when built as a loadable module:
WARNING: modpost: missing MODULE_LICENSE() in drivers/power/reset/zx-reboot.o
see include/linux/module.h for more information
This adds the license as "GPL v2", which matches the header of the file.
MODULE_DESCRIPTION and MODULE_AUTHOR are also added.
Signed-off-by: Jesse Chan <jc@linux.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The original code does this: "1 << (1 << 11)" which is undefined in C.
Fixes: dbc4deda03 ("power: Adds support for Smart Battery System Manager")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Pull i2c updates from Wolfram Sang:
"This contains two bigger than usual tree-wide changes this time. They
all have proper acks, caused no merge conflicts in linux-next where
they have been for a while. They are namely:
- to-gpiod conversion of the i2c-gpio driver and its users (touching
arch/* and drivers/mfd/*)
- adding a sbs-manager based on I2C core updates to SMBus alerts
(touching drivers/power/*)
Other notable changes:
- i2c_boardinfo can now carry a dev_name to be used when the device
is created. This is because some devices in ACPI world need fixed
names to find the regulators.
- the designware driver got a long discussed overhaul of its PM
handling. img-scb and davinci got PM support, too.
- at24 driver has way better OF support. And it has a new maintainer.
Thanks Bartosz for stepping up!
The rest is regular driver updates and fixes"
* 'i2c/for-4.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (55 commits)
ARM: sa1100: simpad: Correct I2C GPIO offsets
i2c: aspeed: Deassert reset in probe
eeprom: at24: Add OF device ID table
MAINTAINERS: new maintainer for AT24 driver
i2c: nuc900: remove platform_data, too
i2c: thunderx: Remove duplicate NULL check
i2c: taos-evm: Remove duplicate NULL check
i2c: Make i2c_unregister_device() NULL-aware
i2c: xgene-slimpro: Support v2
i2c: mpc: remove useless variable initialization
i2c: omap: Trigger bus recovery in lockup case
i2c: gpio: Add support for named gpios in DT
dt-bindings: i2c: i2c-gpio: Add support for named gpios
i2c: gpio: Local vars in probe
i2c: gpio: Augment all boardfiles to use open drain
i2c: gpio: Enforce open drain through gpiolib
gpio: Make it possible for consumers to enforce open drain
i2c: gpio: Convert to use descriptors
power: supply: sbs-message: fix some code style issues
power: supply: sbs-battery: remove unchecked return var
...
Here is the big set of USB and PHY driver updates for 4.15-rc1.
There is the usual amount of gadget and xhci driver updates, along with
phy and chipidea enhancements. There's also a lot of SPDX tags and
license boilerplate cleanups as well, which provide some churn in the
diffstat.
Other major thing is the typec code that moved out of staging and into
the "real" part of the drivers/usb/ tree, which was nice to see happen.
All of these have been in linux-next with no reported issues for a
while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big set of USB and PHY driver updates for 4.15-rc1.
There is the usual amount of gadget and xhci driver updates, along
with phy and chipidea enhancements. There's also a lot of SPDX tags
and license boilerplate cleanups as well, which provide some churn in
the diffstat.
Other major thing is the typec code that moved out of staging and into
the "real" part of the drivers/usb/ tree, which was nice to see
happen.
All of these have been in linux-next with no reported issues for a
while"
* tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (263 commits)
usb: gadget: f_fs: Fix use-after-free in ffs_free_inst
USB: usbfs: compute urb->actual_length for isochronous
usb: core: message: remember to reset 'ret' to 0 when necessary
USB: typec: Remove remaining redundant license text
USB: typec: add SPDX identifiers to some files
USB: renesas_usbhs: rcar?.h: add SPDX tags
USB: chipidea: ci_hdrc_tegra.c: add SPDX line
USB: host: xhci-debugfs: add SPDX lines
USB: add SPDX identifiers to all remaining Makefiles
usb: host: isp1362-hcd: remove a couple of redundant assignments
USB: adutux: remove redundant variable minor
usb: core: add a new usb_get_ptm_status() helper
usb: core: add a 'type' parameter to usb_get_status()
usb: core: introduce a new usb_get_std_status() helper
usb: core: rename usb_get_status() 'type' argument to 'recip'
usb: core: add Status Type definitions
USB: gadget: Remove redundant license text
USB: gadget: function: Remove redundant license text
USB: gadget: udc: Remove redundant license text
USB: gadget: legacy: Remove redundant license text
...
Function platform_get_irq_byname() returns a negative error code on
failure, and a zero or positive number on success. However, in function
cpcap_usb_init_irq(), positive IRQ numbers are also taken as error
cases. Use "if (irq < 0)" instead of "if (!irq)" to validate the return
value of platform_get_irq_byname().
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* pm-pci:
PCI / PM: Add dev_dbg() to print device suspend power states
PCI / PM: Do not resume any devices in pci_pm_prepare()
* pm-avs:
PM / AVS: Use %pS printk format for direct addresses
* pm-docs:
PM: docs: Fix formatting typo in devices.rst
Use kernel preferred dev_* family of functions in place of pr_*,
wherever a device object is present.
Done with the help of coccinelle.
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Variable charging_start is being set but is never read, it is therefore
redundant and can be removed. Cleans up sparse warning:
drivers/power/supply/pcf50633-charger.c:61:3: warning: Value stored to
'charging_start' is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Pointer pdata is assigned but never used, so remove it. Cleans up the
clang warning:
drivers/power/supply/generic-adc-battery.c:211:2: warning: Value
stored to 'pdata' is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
MIPS will soon not be a part of Imagination Technologies, and as such
many @imgtec.com email addresses will no longer be valid. This patch
updates the addresses for those who:
- Have 10 or more patches in mainline authored using an @imgtec.com
email address, or any patches dated within the past year.
- Are still with Imagination but leaving as part of the MIPS business
unit, as determined from an internal email address list.
- Haven't already updated their email address (ie. JamesH) or expressed
a desire to be excluded (ie. Maciej).
- Acked v2 or earlier of this patch, which leaves Deng-Cheng, Matt &
myself.
New addresses are of the form firstname.lastname@mips.com, and all
verified against an internal email address list. An entry is added to
.mailmap for each person such that get_maintainer.pl will report the new
addresses rather than @imgtec.com addresses which will soon be dead.
Instances of the affected addresses throughout the tree are then
mechanically replaced with the new @mips.com address.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@mips.com>
Acked-by: Dengcheng Zhu <dengcheng.zhu@mips.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@mips.com>
Acked-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use 'unsigned int' and curly braces for 'else'.
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Since the return value is not checked anyhow, we don't need to store it.
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Those variables are immediately assigned a value afterwards.
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Currently when a gpio is defined for battery presence it is only used in
the sbs_get_battery_presence_and_health function for 2 properties.
All other properties currently try to read data form the battery before
returning an error if not present. We should know in advance that no
data is going to returned.
As the driver tries multiple times to access a property, this prevents
a lot of smbus accesses, which had a significant effect on device boot-up.
As when the device is registered lots of property accesses are attempted
during boot.
If no gpio is used for presence detection no change in behaviour should
occur.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This adds smb alert support via the smbus_alert driver to generate
power_supply_changed notifications when either external power is
removed / applied or a battery inserted / removed.
Use the i2c alert callback to notify the attached battery driver that a
change has occurred.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This patch adds support for Smart Battery System Manager.
A SBSM is a device listening at I2C/SMBus address 0x0a and is capable of
communicating up to four I2C smart battery devices. All smart battery
devices are listening at address 0x0b, so the SBSM muliplexes between
them. The driver makes use of the I2C-Mux framework to allow smart
batteries to be bound via device tree, i.e. the sbs-battery driver.
Via sysfs interface the online state and charge type are presented. If
the driver is bound as ltc1760 (an implementation of a Dual Smart Battery
System Manager) the charge type can also be changed from trickle to fast.
Signed-off-by: Karl-Heinz Schneider <karl-heinz@schneider-inet.de>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
The extcon has two type of extcon devices as following.
- 'extcon provider deivce' adds new extcon device and detect the
state/properties of external connector. Also, it notifies the
state/properties to the extcon consumer device.
- 'extcon consumer device' gets the change state/properties
from extcon provider device.
Prior to that, include/linux/extcon.h contains all exported API for
both provider and consumer device driver. To clarify the meaning of
header file and to remove the wrong use-case on consumer device,
this patch separates into extcon.h and extcon-provider.h.
[Description for include/linux/{extcon.h|extcon-provider.h}]
- extcon.h includes the extcon API and data structure for extcon consumer
device driver. This header file contains the following APIs:
: Register/unregister the notifier to catch the change of extcon device
: Get the extcon device instance
: Get the extcon device name
: Get the state of each external connector
: Get the property value of each external connector
: Get the property capability of each external connector
- extcon-provider.h includes the extcon API and data structure for extcon
provider device driver. This header file contains the following APIs:
: Include 'include/linux/extcon.h'
: Allocate the memory for extcon device instance
: Register/unregister extcon device
: Set the state of each external connector
: Set the property value of each external connector
: Set the property capability of each external connector
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
This patch fixes some spelling typos found in Kconfig files.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Use the %pS instead of the %pF printk format specifier for printing
symbols from direct addresses. This is needed for the ia64, ppc64 and
parisc64 architectures.
Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- RK805 Power Management IC (PMIC)
- ROHM BD9571MWV-M MFD Power Management IC (PMIC)
- Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs
- New Device Support
- Add support for HiSilicon Hi6421v530 to hi6421-pmic-core
- Add support for X-Powers AXP806 to axp20x
- Add support for X-Powers AXP813 to axp20x
- Add support for Intel Sunrise Point LPSS to intel-lpss-pci
- New Functionality
- Amend API to provide register layout; atmel-smc
- Fix-ups
- DT re-work; omap, nokia
- Header file location change {I2C => MFD}; dm355evm_msp, tps65010
- Fix chip ID formatting issue(s); rk808
- Optionally register touchscreen devices; da9052-core
- Documentation improvements; twl-core
- Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi
- Drop unnecessary static declaration; max8925-i2c
- Kconfig changes (missing deps and remove module support)
- Slim down oversized licence statement; hi6421-pmic-core
- Use managed resources (devm_*); lp87565
- Supply proper error checking/handling; t7l66xb
- Bug Fixes
- Fix counter duplication issue; da9052-core
- Fix potential NULL deference issue; max8998
- Leave SPI-NOR write-protection bit alone; lpc_ich
- Ensure device is put into reset during suspend; intel-lpss
- Correct register offset variable size; omap-usb-tll
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Merge tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers
- RK805 Power Management IC (PMIC)
- ROHM BD9571MWV-M MFD Power Management IC (PMIC)
- Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs
New Device Support:
- Add support for HiSilicon Hi6421v530 to hi6421-pmic-core
- Add support for X-Powers AXP806 to axp20x
- Add support for X-Powers AXP813 to axp20x
- Add support for Intel Sunrise Point LPSS to intel-lpss-pci
New Functionality:
- Amend API to provide register layout; atmel-smc
Fix-ups:
- DT re-work; omap, nokia
- Header file location change {I2C => MFD}; dm355evm_msp, tps65010
- Fix chip ID formatting issue(s); rk808
- Optionally register touchscreen devices; da9052-core
- Documentation improvements; twl-core
- Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi
- Drop unnecessary static declaration; max8925-i2c
- Kconfig changes (missing deps and remove module support)
- Slim down oversized licence statement; hi6421-pmic-core
- Use managed resources (devm_*); lp87565
- Supply proper error checking/handling; t7l66xb
Bug Fixes:
- Fix counter duplication issue; da9052-core
- Fix potential NULL deference issue; max8998
- Leave SPI-NOR write-protection bit alone; lpc_ich
- Ensure device is put into reset during suspend; intel-lpss
- Correct register offset variable size; omap-usb-tll"
* tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (61 commits)
mfd: intel_soc_pmic: Differentiate between Bay and Cherry Trail CRC variants
mfd: intel_soc_pmic: Export separate mfd-cell configs for BYT and CHT
dt-bindings: mfd: Add bindings for ZII RAVE devices
mfd: omap-usb-tll: Fix register offsets
mfd: da9052: Constify spi_device_id
mfd: intel-lpss: Put I2C and SPI controllers into reset state on suspend
mfd: da9055: Constify i2c_device_id
mfd: intel-lpss: Add missing PCI ID for Intel Sunrise Point LPSS devices
mfd: t7l66xb: Handle return value of clk_prepare_enable
mfd: Add ROHM BD9571MWV-M PMIC DT bindings
mfd: intel_soc_pmic_chtwc: Turn Kconfig option into a bool
mfd: lp87565: Convert to use devm_mfd_add_devices()
mfd: Add support for TPS68470 device
mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Haswell/Broadwell
mfd: syscon: atmel-smc: Add helper to retrieve register layout
mfd: axp20x: Use correct platform device ID for many PEK
dt-bindings: mfd: axp20x: Introduce bindings for AXP813
mfd: axp20x: Add support for AXP813 PMIC
dt-bindings: mfd: axp20x: Add AXP806 to supported list of chips
mfd: Add ROHM BD9571MWV-M MFD PMIC driver
...
- Drop the P-state selection algorithm based on a PID controller
from intel_pstate and make it use the same P-state selection
method (based on the CPU load) for all types of systems in the
active mode (Rafael Wysocki, Srinivas Pandruvada).
- Rework the cpufreq core and governors to make it possible to
take cross-CPU utilization updates into account and modify the
schedutil governor to actually do so (Viresh Kumar).
- Clean up the handling of transition latency information in the
cpufreq core and untangle it from the information on which drivers
cannot do dynamic frequency switching (Viresh Kumar).
- Add support for new SoCs (MT2701/MT7623 and MT7622) to the
mediatek cpufreq driver and update its DT bindings (Sean Wang).
- Modify the cpufreq dt-platdev driver to autimatically create
cpufreq devices for the new (v2) Operating Performance Points
(OPP) DT bindings and update its whitelist of supported systems
(Viresh Kumar, Shubhrajyoti Datta, Marc Gonzalez, Khiem Nguyen,
Finley Xiao).
- Add support for Ux500 to the cpufreq-dt driver and drop the
obsolete dbx500 cpufreq driver (Linus Walleij, Arnd Bergmann).
- Add new SoC (R8A7795) support to the cpufreq rcar driver (Khiem
Nguyen).
- Fix and clean up assorted issues in the cpufreq drivers and core
(Arvind Yadav, Christophe Jaillet, Colin Ian King, Gustavo Silva,
Julia Lawall, Leonard Crestez, Rob Herring, Sudeep Holla).
- Update the IO-wait boost handling in the schedutil governor to
make it less aggressive (Joel Fernandes).
- Rework system suspend diagnostics to make it print fewer messages
to the kernel log by default, add a sysfs knob to allow more
suspend-related messages to be printed and add Low Power S0 Idle
constraints checks to the ACPI suspend-to-idle code (Rafael
Wysocki, Srinivas Pandruvada).
- Prefer suspend-to-idle over S3 on ACPI-based systems with the
ACPI_FADT_LOW_POWER_S0 flag set and the Low Power Idle S0 _DSM
interface present in the ACPI tables (Rafael Wysocki).
- Update documentation related to system sleep and rename a number
of items in the code to make it cleare that they are related to
suspend-to-idle (Rafael Wysocki).
- Export a variable allowing device drivers to check the target
system sleep state from the core system suspend code (Florian
Fainelli).
- Clean up the cpuidle subsystem to handle the polling state on
x86 in a more straightforward way and to use %pOF instead of
full_name (Rafael Wysocki, Rob Herring).
- Update the devfreq framework to fix and clean up a few minor
issues (Chanwoo Choi, Rob Herring).
- Extend diagnostics in the generic power domains (genpd) framework
and clean it up slightly (Thara Gopinath, Rob Herring).
- Fix and clean up a couple of issues in the operating performance
points (OPP) framework (Viresh Kumar, Waldemar Rymarkiewicz).
- Add support for RV1108 to the rockchip-io Adaptive Voltage Scaling
(AVS) driver (David Wu).
- Fix the usage of notifiers in CPU power management on some
platforms (Alex Shi).
- Update the pm-graph system suspend/hibernation and boot profiling
utility (Todd Brandt).
- Make it possible to run the cpupower utility without CPU0 (Prarit
Bhargava).
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Merge tag 'pm-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This time (again) cpufreq gets the majority of changes which mostly
are driver updates (including a major consolidation of intel_pstate),
some schedutil governor modifications and core cleanups.
There also are some changes in the system suspend area, mostly related
to diagnostics and debug messages plus some renames of things related
to suspend-to-idle. One major change here is that suspend-to-idle is
now going to be preferred over S3 on systems where the ACPI tables
indicate to do so and provide requsite support (the Low Power Idle S0
_DSM in particular). The system sleep documentation and the tools
related to it are updated too.
The rest is a few cpuidle changes (nothing major), devfreq updates,
generic power domains (genpd) framework updates and a few assorted
modifications elsewhere.
Specifics:
- Drop the P-state selection algorithm based on a PID controller from
intel_pstate and make it use the same P-state selection method
(based on the CPU load) for all types of systems in the active mode
(Rafael Wysocki, Srinivas Pandruvada).
- Rework the cpufreq core and governors to make it possible to take
cross-CPU utilization updates into account and modify the schedutil
governor to actually do so (Viresh Kumar).
- Clean up the handling of transition latency information in the
cpufreq core and untangle it from the information on which drivers
cannot do dynamic frequency switching (Viresh Kumar).
- Add support for new SoCs (MT2701/MT7623 and MT7622) to the mediatek
cpufreq driver and update its DT bindings (Sean Wang).
- Modify the cpufreq dt-platdev driver to autimatically create
cpufreq devices for the new (v2) Operating Performance Points (OPP)
DT bindings and update its whitelist of supported systems (Viresh
Kumar, Shubhrajyoti Datta, Marc Gonzalez, Khiem Nguyen, Finley
Xiao).
- Add support for Ux500 to the cpufreq-dt driver and drop the
obsolete dbx500 cpufreq driver (Linus Walleij, Arnd Bergmann).
- Add new SoC (R8A7795) support to the cpufreq rcar driver (Khiem
Nguyen).
- Fix and clean up assorted issues in the cpufreq drivers and core
(Arvind Yadav, Christophe Jaillet, Colin Ian King, Gustavo Silva,
Julia Lawall, Leonard Crestez, Rob Herring, Sudeep Holla).
- Update the IO-wait boost handling in the schedutil governor to make
it less aggressive (Joel Fernandes).
- Rework system suspend diagnostics to make it print fewer messages
to the kernel log by default, add a sysfs knob to allow more
suspend-related messages to be printed and add Low Power S0 Idle
constraints checks to the ACPI suspend-to-idle code (Rafael
Wysocki, Srinivas Pandruvada).
- Prefer suspend-to-idle over S3 on ACPI-based systems with the
ACPI_FADT_LOW_POWER_S0 flag set and the Low Power Idle S0 _DSM
interface present in the ACPI tables (Rafael Wysocki).
- Update documentation related to system sleep and rename a number of
items in the code to make it cleare that they are related to
suspend-to-idle (Rafael Wysocki).
- Export a variable allowing device drivers to check the target
system sleep state from the core system suspend code (Florian
Fainelli).
- Clean up the cpuidle subsystem to handle the polling state on x86
in a more straightforward way and to use %pOF instead of full_name
(Rafael Wysocki, Rob Herring).
- Update the devfreq framework to fix and clean up a few minor issues
(Chanwoo Choi, Rob Herring).
- Extend diagnostics in the generic power domains (genpd) framework
and clean it up slightly (Thara Gopinath, Rob Herring).
- Fix and clean up a couple of issues in the operating performance
points (OPP) framework (Viresh Kumar, Waldemar Rymarkiewicz).
- Add support for RV1108 to the rockchip-io Adaptive Voltage Scaling
(AVS) driver (David Wu).
- Fix the usage of notifiers in CPU power management on some
platforms (Alex Shi).
- Update the pm-graph system suspend/hibernation and boot profiling
utility (Todd Brandt).
- Make it possible to run the cpupower utility without CPU0 (Prarit
Bhargava)"
* tag 'pm-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (87 commits)
cpuidle: Make drivers initialize polling state
cpuidle: Move polling state initialization code to separate file
cpuidle: Eliminate the CPUIDLE_DRIVER_STATE_START symbol
cpufreq: imx6q: Fix imx6sx low frequency support
cpufreq: speedstep-lib: make several arrays static, makes code smaller
PM: docs: Delete the obsolete states.txt document
PM: docs: Describe high-level PM strategies and sleep states
PM / devfreq: Fix memory leak when fail to register device
PM / devfreq: Add dependency on PM_OPP
PM / devfreq: Move private devfreq_update_stats() into devfreq
PM / devfreq: Convert to using %pOF instead of full_name
PM / AVS: rockchip-io: add io selectors and supplies for RV1108
cpufreq: ti: Fix 'of_node_put' being called twice in error handling path
cpufreq: dt-platdev: Drop few entries from whitelist
cpufreq: dt-platdev: Automatically create cpufreq device with OPP v2
ARM: ux500: don't select CPUFREQ_DT
cpuidle: Convert to using %pOF instead of full_name
cpufreq: Convert to using %pOF instead of full_name
PM / Domains: Convert to using %pOF instead of full_name
cpufreq: Cap the default transition delay value to 10 ms
...
include/linux/i2c is not for client devices. Move the header file to a
more appropriate location.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Tested on Pyra prototype with bq27421.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On some devices the USB Type-C port power (USB PD 2.0) negotiation is
done by a separate port-controller IC, while the current limit is
controlled through another (charger) IC.
It has been decided to model this by modelling the external Type-C
power brick (adapter/charger) as a power-supply class device which
supplies the charger-IC, with its voltage-now and current-max representing
the negotiated voltage and max current draw.
This commit adds support for this to the bq24190_charger driver by adding
an external_power_changed callback and calling
power_supply_set_input_current_limit_from_supplier from this callback.
This callback will only get called if the bq24190 has a parent-supply.
Note this replaces the functionality to get the current-limit from an
extcon device, which will be removed in a follow-up commit.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Register the 5V boost converter as a regulator named "usb_otg_vbus".
This commit also adds support for bq24190_platform_data, through which
non device-tree platforms can pass the regulator_init_data (containing
mappings for the consumer amongst other things).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Set pre-charge and charge-term current, obtained from power_supply_battery_info.
Add sysfs attributes precharge_current & charge_term_current.
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Set minimum system voltage limit obtained from device property.
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Add get_config(). Rename set_mode_host() to set_config().
Call get_config() and hw_init() after power_supply_register().
No functional changes.
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Support data memory update on BQ27425. Parameters from TI datasheets are also
provided for BQ27500, 545, 421, 441, 621; however these are commented out,
as they are not tested.
Add BQ27XXX_O_CFGUP & _O_RAM for use in bq27xxx_chip_data[n].opts
and by data memory update functions.
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
For the existing features, these chips act like others already ID'd,
so they had false but functional IDs. We will be adding features
which require correct IDs, so the following IDs are added:
BQ2752X, 531, 542, 546, 742, 425, 441, 621
Chip-specific features are now tracked by BQ27XXX_O_* flags in di->opts.
No functional changes to the driver.
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
To support new features which require different data for each chip, we
unify the bq27xxx_regs and bq27xxx_battery_props tables into a single one.
No functional changes to the driver.
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
bq24192i was previously only in ID table, so add it to DT table.
Cc: Tony Lindgren <tony@atomide.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Export the input current limit of the charger as a
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT property on the charger
power_supply class device.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On some devices the USB Type-C port power (USB PD 2.0) negotiation is
done by a separate port-controller IC, while the current limit is
controlled through another (charger) IC.
It has been decided to model this by modelling the external Type-C
power brick (adapter/charger) as a power-supply class device which
supplies the charger-IC, with its voltage-now and current-max representing
the negotiated voltage and max current draw.
This commit adds a power_supply_set_input_current_limit_from_supplier
helper function which charger power-supply drivers can call to get
the max-current from their supplier and have this applied
through their set_property call-back to their input-current-limit.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Fix drivers/power/supply/max17042_battery.c:1059:6:
warning: 'acpi_id' may be used uninitialized in this function.
No idea why my gcc version did not catch this.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Omit extra messages for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Make these const as they are only passed as an argument to the
function device_create_file and device_remove_file and the corresponding
arguments are of type const.
Done using Coccinelle.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On some x86/ACPI boards the DSDT defines an ACPI event handler for
the max17047 IRQ, this causes several problems:
1) We need to share the IRQ to avoid an error getting it
2) Even of we are willing to share, we may fail to share because some
DSDTs claim it exclusivly
3) If we are unable to share the IRQ, or the IRQ is only listed as an
ACPI event source and not in the max1704 firmware node, then the
charge threshold IRQ (which is used to give an IRQ every 1 percent
charge change) becomes a problem, the ACPI event handler will not
update this to the next 1 percent threshold, so the IRQ keeps firing
and we get an IRQ storm pegging 1 CPU core.
This happens despite the max17042 driver not setting the charge
threshold because Windows uses it and leaves it set on reboot.
So if we are unable to get the IRQ we need to reprogram the
charge threshold to its disabled setting.
This commit fixes al of the above, while at it it also makes the error
msg when being unable to get the IRQ consistent with other messages.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Some x86 devices enumerate a max17047 fuel-gauge through a MAX17047
ACPI firmware-node, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This adds the necessary data for handling io voltage domains on the RV1108.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Integrate with the newly added USB charger interface to limit the current
we draw from the USB input based on the input device configuration
identified by the USB stack, allowing us to charge more quickly from high
current inputs without drawing more current than specified from others.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Don't populate various read only arrays on the stack but make them
static const, making the object code smaller and saves 148 bytes
overall:
Before:
text data bss dec hex filename
11940 4496 64 16500 4074 lp8788-charger.o
After:
text data bss dec hex filename
11472 4816 64 16352 3fe0 lp8788-charger.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Use 'sizeof(*var)' instead of the equivalent 'sizeof(data structure type)'
because it is less verbose.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Update a comment which is no more up to date since commit
2ed9e9b653.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
'devm_kzalloc()' can return NULL. Return -ENOMEM in this case in order to
avoid a NULL pointer dereference later on.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Commit 2848e039c5 ("power: supply: Make power_supply_am_i_supplied return
-ENODEV if there are no suppliers") was supposed to make
power_supply_am_i_supplied() return -ENODEV when there are no supplies
which supply the supply passed to it.
But instead it will only return -ENODEV when there are no supplies at
all as data->count++; is incremented on every call of the iterator, rather
then only when __power_supply_is_supplied_by returns true. This commit
fixes this.
Fixes: 2848e039c5 ("power: supply: Make power_supply_am_i_supplied ...")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Add const to bin_attribute structures as they are only passed to the
functions sysfs_{remove/create}_bin_file or
device_{remove/create}_bin_file. The corresponding parameters
passed are of type const, so declare the structures to be const.
Done using Coccinelle:
@m disable optional_qualifier@
identifier s;
position p;
@@
static struct bin_attribute s@p={...};
@okay1@
position p;
identifier m.s;
@@
(
sysfs_create_bin_file(...,&s@p,...)
|
sysfs_remove_bin_file(...,&s@p,...)
)
@bad@
position p!={m.p,okay1.p};
identifier m.s;
@@
s@p
@change depends on !bad disable optional_qualifier@
identifier m.s;
@@
static
+const
struct bin_attribute s={...};
Same script was modified for device_{create/remove}_bin_file functions.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
When the BQ27xxx driver was originally written the w1 subsystem only
allowed device drivers for w1 attached devices to live in the w1
subsystem. Kernel driver subsystems expect that the driver for a device
live in the directory of the subsystem for which it implements
functionality, not in the directory of the bus that it is attached. To
work around this, the BQ27xxx driver was implemented as a platform device
driver and the interface driver would instantiate this device from within
the w1 directory, then pass a w1 read callback as platform data.
As we can now have the w1 interface driver in the power/supply directory
(like we do already with the i2c interface driver) we can remove this
middle-layer platform driver.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The HDQ interface driver should be in this folder just like the I2C
interface driver. Move this driver out of drivers/w1/slave and into
drivers/power/supply.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
LTC2944 is compatible with LTC2943, but uses different
voltage and current computing constants.
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Dragos Bogdan <dragos.bogdan@analog.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
LTC2942 is pin compatible with LTC2941 providing additional
informations about battery voltage and temperature. It can
be runtime detected using bit A7 in the Status register.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Dragos Bogdan <dragos.bogdan@analog.com>
Tested-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
In order to support LTC2942 which has temperature registers
at different offsets than LTC2943 use following register naming
scheme (prefixes):
- LTC294X_ common registers
- LTC2942_ chips specific registers
- LTC2943_ specific registers
LTC2944 is compatible with LTC2943 but uses different constants
to compute voltage and current, so replace num_regs misused
for device indentification with real device id to discriminate
between those two.
There are no functional changes.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Dragos Bogdan <dragos.bogdan@analog.com>
Tested-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
At least with the Inspired Energy compatible batteries a delay is required
after setting the capacity mode bit from amp to watts or the reverse.
Setting the bit and then immediately pooling the status register results
in an unknown error being returned in the register. Add the delay results
in and ok status being return. This was also seen when reading the charge
and energy registers where the wrong value was returned for the requested
mode.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Tested-by: Michael Heinemann <committed@heine.so>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Sort the header includes prior to adding to the list.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
checkpatch issued an error in having the FSF address in the comment.
As address may change and Linux already includes a copy.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The MAX17211 monitor a single cell pack. The MAX17215 monitor and
balance a 2S or 3S pack or monitor a multiple-series cell pack.
Both device use 1-Wire interfce.
Signed-off-by: Alex A. Mihaylov <minimumlaw@rambler.ru>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
2673 400 0 3073 c01 power/supply/pcf50633-charger.o
File size After adding 'const':
text data bss dec hex filename
2737 336 0 3073 bed power/supply/pcf50633-charger.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
of_irq_get() may return any negative error number as well as 0 on failure,
while the driver only checks for -EPROBE_DEFER, blithely continuing with
the call to devm_request_irq() -- that function expects *unsigned int*,
so would probably fail anyway when a large IRQ number resulting from a
conversion of a negative error number is passed to it... This, however,
is incorrect behavior -- error number is not IRQ number.
Check for 'irq <= 0' instead and return -ENXIO from probe if of_irq_get()
returned 0.
Fixes: a09209acd6 ("power: supply: act8945a_charger: Add status change update support")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
When CONFIG_OMAP_USB2 is set to 'm' and the charger driver is built-in,
we get this link failure:
drivers/power/supply/cpcap-charger.o: In function `cpcap_charger_probe':
cpcap-charger.c:(.text+0x48c): undefined reference to `omap_usb2_set_comparator'
drivers/power/supply/cpcap-charger.o: In function `cpcap_charger_remove':
cpcap-charger.c:(.text+0x774): undefined reference to `omap_usb2_set_comparator'
This adds a dependency to prevent that problem, while still allowing
compile-testing with the OMAP_USB2 driver completely disabled.
Fixes: 0c9888e3c1 ("power: supply: cpcap-charger: Add minimal CPCAP PMIC battery charger")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The capacity mode bit is bit 15. Currently it is written as
default initialized enum and never shifted. This leads to
a behaviour where the BATTERY_MODE is not correctly
recognized and set again.
This commit initializes the enum accordingly.
Signed-off-by: Michael Heinemann <committed@heine.so>
Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* two fixes for twl4030-charger
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Merge tag 'for-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply fixes from Reichel:
"I have two more fixes for the power-supply subsystem:
- two fixes for twl4030-charger"
* tag 'for-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
power: supply: twl4030-charger: add deferred probing for phy and iio
power: supply: twl4030-charger: move irq allocation to just before irqs are enabled
* New drivers
- Linear ltc3651 charger driver
- Motorola CPCAP battery fuel-gauge driver
* New chip/feature support
- bq27xxx: prepare for chip data setup
- axp20x_battery: support max charge current setup
* New core features
- add Apple Brick ID type
- support "supplied-from" device property for generic ACPI/pdata support
- support strings for sysfs properties representing enums
- introduce battery-info (backend is DT only for now)
- provide reboot-mode header globally
* Misc. fixes
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Merge tag 'for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"New drivers:
- Linear ltc3651 charger driver
- Motorola CPCAP battery fuel-gauge driver
New chip/feature support:
- bq27xxx: prepare for chip data setup
- axp20x_battery: support max charge current setup
New core features:
- add Apple Brick ID type
- support "supplied-from" device property for generic ACPI/pdata support
- support strings for sysfs properties representing enums
- introduce battery-info (backend is DT only for now)
- provide reboot-mode header globally
.. and misc fixes"
* tag 'for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (39 commits)
power: supply: sbs-battery: Don't needlessly set CAPACITY_MODE
power: supply: sbs-battery: Prevent CAPACITY_MODE races
power: supply: bq24735: remove incorrect le16_to_cpu calls
power: supply: sbs-battery: remove incorrect le16_to_cpu calls
power: supply: cpcap-charger: Add missing power_supply_config
power: supply: twl4030-charger: move allocation of iio channel to the beginning
power: supply: twl4030-charger: allocate iio by devm_iio_channel_get() and fix error path
power: supply: core: constify psy_tcd_ops.
dt-bindings: power: supply: cpcap-battery: Add power-supplies property
dt-bindings: power: supply: move max8903-charger.txt to proper location
dt-bindings: power: supply: move maxim,max14656.txt to proper location
power: supply: twl4030_charger: Use sysfs_match_string() helper
power: reset: reboot-mode: Make include file global
power: supply: axp20x_battery: add DT support for battery max constant charge current
power: supply: axp20x_battery: add support for DT battery
power: supply: bq27xxx: Add power_supply_battery_info support
power: supply: bq27xxx: Add chip data memory read/write support
power: supply: bq27xxx: Add bulk transfer bus methods
dt-bindings: power: supply: bq27xxx: Add monitored-battery documentation
power: supply: core: Add power_supply_prop_precharge
...
- Rework suspend-to-idle to allow it to take wakeup events signaled
by the EC into account on ACPI-based platforms in order to properly
support power button wakeup from suspend-to-idle on recent Dell
laptops (Rafael Wysocki).
That includes the core suspend-to-idle code rework, support for
the Low Power S0 _DSM interface, and support for the ACPI INT0002
Virtual GPIO device from Hans de Goede (required for USB keyboard
wakeup from suspend-to-idle to work on some machines).
- Stop trying to export the current CPU frequency via /proc/cpuinfo
on x86 as that is inaccurate and confusing (Len Brown).
- Rework the way in which the current CPU frequency is exported by
the kernel (over the cpufreq sysfs interface) on x86 systems with
the APERF and MPERF registers by always using values read from
these registers, when available, to compute the current frequency
regardless of which cpufreq driver is in use (Len Brown).
- Rework the PCI/ACPI device wakeup infrastructure to remove the
questionable and artificial distinction between "devices that
can wake up the system from sleep states" and "devices that can
generate wakeup signals in the working state" from it, which
allows the code to be simplified quite a bit (Rafael Wysocki).
- Fix the wakeup IRQ framework by making it use SRCU instead of
RCU which doesn't allow sleeping in the read-side critical
sections, but which in turn is expected to be allowed by the
IRQ bus locking infrastructure (Thomas Gleixner).
- Modify some computations in the intel_pstate driver to avoid
rounding errors resulting from them (Srinivas Pandruvada).
- Reduce the overhead of the intel_pstate driver in the HWP
(hardware-managed P-states) mode and when the "performance"
P-state selection algorithm is in use by making it avoid
registering scheduler callbacks in those cases (Len Brown).
- Rework the energy_performance_preference sysfs knob in
intel_pstate by changing the values that correspond to
different symbolic hint names used by it (Len Brown).
- Make it possible to use more than one cpuidle driver at the same
time on ARM (Daniel Lezcano).
- Make it possible to prevent the cpuidle menu governor from using
the 0 state by disabling it via sysfs (Nicholas Piggin).
- Add support for FFH (Fixed Functional Hardware) MWAIT in ACPI C1
on AMD systems (Yazen Ghannam).
- Make the CPPC cpufreq driver take the lowest nonlinear performance
information into account (Prashanth Prakash).
- Add support for hi3660 to the cpufreq-dt driver, fix the
imx6q driver and clean up the sfi, exynos5440 and intel_pstate
drivers (Colin Ian King, Krzysztof Kozlowski, Octavian Purdila,
Rafael Wysocki, Tao Wang).
- Fix a few minor issues in the generic power domains (genpd)
framework and clean it up somewhat (Krzysztof Kozlowski,
Mikko Perttunen, Viresh Kumar).
- Fix a couple of minor issues in the operating performance points
(OPP) framework and clean it up somewhat (Viresh Kumar).
- Fix a CONFIG dependency in the hibernation core and clean it up
slightly (Balbir Singh, Arvind Yadav, BaoJun Luo).
- Add rk3228 support to the rockchip-io adaptive voltage scaling
(AVS) driver (David Wu).
- Fix an incorrect bit shift operation in the RAPL power capping
driver (Adam Lessnau).
- Add support for the EPP field in the HWP (hardware managed
P-states) control register, HWP.EPP, to the x86_energy_perf_policy
tool and update msr-index.h with HWP.EPP values (Len Brown).
- Fix some minor issues in the turbostat tool (Len Brown).
- Add support for AMD family 0x17 CPUs to the cpupower tool and fix
a minor issue in it (Sherry Hurwitz).
- Assorted cleanups, mostly related to the constification of some
data structures (Arvind Yadav, Joe Perches, Kees Cook, Krzysztof
Kozlowski).
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Merge tag 'pm-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The big ticket items here are the rework of suspend-to-idle in order
to add proper support for power button wakeup from it on recent Dell
laptops and the rework of interfaces exporting the current CPU
frequency on x86.
In addition to that, support for a few new pieces of hardware is
added, the PCI/ACPI device wakeup infrastructure is simplified
significantly and the wakeup IRQ framework is fixed to unbreak the IRQ
bus locking infrastructure.
Also, there are some functional improvements for intel_pstate, tools
updates and small fixes and cleanups all over.
Specifics:
- Rework suspend-to-idle to allow it to take wakeup events signaled
by the EC into account on ACPI-based platforms in order to properly
support power button wakeup from suspend-to-idle on recent Dell
laptops (Rafael Wysocki).
That includes the core suspend-to-idle code rework, support for the
Low Power S0 _DSM interface, and support for the ACPI INT0002
Virtual GPIO device from Hans de Goede (required for USB keyboard
wakeup from suspend-to-idle to work on some machines).
- Stop trying to export the current CPU frequency via /proc/cpuinfo
on x86 as that is inaccurate and confusing (Len Brown).
- Rework the way in which the current CPU frequency is exported by
the kernel (over the cpufreq sysfs interface) on x86 systems with
the APERF and MPERF registers by always using values read from
these registers, when available, to compute the current frequency
regardless of which cpufreq driver is in use (Len Brown).
- Rework the PCI/ACPI device wakeup infrastructure to remove the
questionable and artificial distinction between "devices that can
wake up the system from sleep states" and "devices that can
generate wakeup signals in the working state" from it, which allows
the code to be simplified quite a bit (Rafael Wysocki).
- Fix the wakeup IRQ framework by making it use SRCU instead of RCU
which doesn't allow sleeping in the read-side critical sections,
but which in turn is expected to be allowed by the IRQ bus locking
infrastructure (Thomas Gleixner).
- Modify some computations in the intel_pstate driver to avoid
rounding errors resulting from them (Srinivas Pandruvada).
- Reduce the overhead of the intel_pstate driver in the HWP
(hardware-managed P-states) mode and when the "performance" P-state
selection algorithm is in use by making it avoid registering
scheduler callbacks in those cases (Len Brown).
- Rework the energy_performance_preference sysfs knob in intel_pstate
by changing the values that correspond to different symbolic hint
names used by it (Len Brown).
- Make it possible to use more than one cpuidle driver at the same
time on ARM (Daniel Lezcano).
- Make it possible to prevent the cpuidle menu governor from using
the 0 state by disabling it via sysfs (Nicholas Piggin).
- Add support for FFH (Fixed Functional Hardware) MWAIT in ACPI C1 on
AMD systems (Yazen Ghannam).
- Make the CPPC cpufreq driver take the lowest nonlinear performance
information into account (Prashanth Prakash).
- Add support for hi3660 to the cpufreq-dt driver, fix the imx6q
driver and clean up the sfi, exynos5440 and intel_pstate drivers
(Colin Ian King, Krzysztof Kozlowski, Octavian Purdila, Rafael
Wysocki, Tao Wang).
- Fix a few minor issues in the generic power domains (genpd)
framework and clean it up somewhat (Krzysztof Kozlowski, Mikko
Perttunen, Viresh Kumar).
- Fix a couple of minor issues in the operating performance points
(OPP) framework and clean it up somewhat (Viresh Kumar).
- Fix a CONFIG dependency in the hibernation core and clean it up
slightly (Balbir Singh, Arvind Yadav, BaoJun Luo).
- Add rk3228 support to the rockchip-io adaptive voltage scaling
(AVS) driver (David Wu).
- Fix an incorrect bit shift operation in the RAPL power capping
driver (Adam Lessnau).
- Add support for the EPP field in the HWP (hardware managed
P-states) control register, HWP.EPP, to the x86_energy_perf_policy
tool and update msr-index.h with HWP.EPP values (Len Brown).
- Fix some minor issues in the turbostat tool (Len Brown).
- Add support for AMD family 0x17 CPUs to the cpupower tool and fix a
minor issue in it (Sherry Hurwitz).
- Assorted cleanups, mostly related to the constification of some
data structures (Arvind Yadav, Joe Perches, Kees Cook, Krzysztof
Kozlowski)"
* tag 'pm-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (69 commits)
cpufreq: Update scaling_cur_freq documentation
cpufreq: intel_pstate: Clean up after performance governor changes
PM: hibernate: constify attribute_group structures.
cpuidle: menu: allow state 0 to be disabled
intel_idle: Use more common logging style
PM / Domains: Fix missing default_power_down_ok comment
PM / Domains: Fix unsafe iteration over modified list of domains
PM / Domains: Fix unsafe iteration over modified list of domain providers
PM / Domains: Fix unsafe iteration over modified list of device links
PM / Domains: Handle safely genpd_syscore_switch() call on non-genpd device
PM / Domains: Call driver's noirq callbacks
PM / core: Drop run_wake flag from struct dev_pm_info
PCI / PM: Simplify device wakeup settings code
PCI / PM: Drop pme_interrupt flag from struct pci_dev
ACPI / PM: Consolidate device wakeup settings code
ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags
PM / QoS: constify *_attribute_group.
PM / AVS: rockchip-io: add io selectors and supplies for rk3228
powercap/RAPL: prevent overridding bits outside of the mask
PM / sysfs: Constify attribute groups
...
This fixes an issue if both this twl4030_charger driver and
phy-twl4030-usb are compiled as modules and loaded in random order.
It has been observed on GTA04 and OpenPandora devices that in worst
case the boot process hangs and in best case the AC detection fails
with a warning.
Therefore we add deferred probing checks for the usb_phy and the
iio channel for AC detection.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
And initialize workers and notifiers as soon as possible.
This avoids a potential race if irqs are enabled and triggered too early
before the worker is properly set up.
Suggested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This adds the necessary data for handling io voltage domains on the rk3228.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
According to the smart battery spec (1), the CAPACITY_MODE bit does not
influence the value read from RelativeStateOfCharge(), so don't bother
changing CAPACITY_MODE when doing such a read.
(1) - Smart Battery Data Specification, Rev 1.1, Dec. 11, 1998
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
A subset of smart battery commands return charge or energy depending on
the CAPACITY_MODE bit setting of BatteryMode(). In order to
unambiguously read a charge or energy value, it is necessary to ensure
that CAPACITY_MODE is set as desired, and not changed for the duration
of the attribute read.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
i2c_smbus commands handle the correct byte order for smbus transactions
internally. This will currently result in incorrect operation on big
endian systems.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
i2c_smbus commands handle the correct byte order for smbus transactions
internally. This will currently result in incorrect operation on big
endian systems.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Otherwise cpcap-battery won't probe properly with the power-supplies
property configured but will fail with "Not all required supplies found,
defer probe".
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This is in prepraration for EPROBE_DEFER handling because it is quite
likely that geting the (madc) iio channel is deferred more often than
later steps.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Suggested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
File size before:
text data bss dec hex filename
4240 200 80 4520 11a8 drivers/power/supply/power_supply_core.o
File size After adding 'const':
text data bss dec hex filename
4296 136 80 4512 11a0 drivers/power/supply/power_supply_core.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Use sysfs_match_string() helper instead of open coded variant.
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Like other subsystems we should be able to define slave devices outside
of the w1 directory. To do this we move public facing interface
definitions to include/linux/w1.h and rename the internal definition
file to w1_internal.h.
As w1_family.h and w1_int.h contained almost entirely public
driver interface definitions we simply removed these files and
moved the remaining definitions into w1_internal.h.
With this we can now start to move slave devices out of w1/slaves and
into the subsystem based on the function they implement, again like
other drivers.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move the reboot-mode.h include file into include/linux to allow drivers
outside drivers/power/reset to implement reboot-mode.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This adds the ability to set the maximum constant charge current,
supported by the battery, delivered by this battery power supply to the
battery.
The maximum constant charge current set in DT will also set the default
constant charge current supplied by this supply.
The actual user can modify the constant charge current within the range
of 0 to maximum constant charge current via sysfs.
The user can also modify the maximum constant charge current to widen
the range of possible constant charge current. While this seems quite
risky, a message is printed on the console to warn the user this might
damage the battery. The reason for letting the user change the maximum
constant charge current is for letting users change the battery and
thus, let them adjust the maximum constant charge current according to
what the battery can support.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This adds support in X-Powers AXP20X and AXP22X battery driver for a
fixed battery in DT.
It will take the minimum supported voltage by the battery as defined in
the battery DT node and set the V_OFF register to this value, telling
the system to shut down if the supplied power is below this value.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Previously there was no way to configure these chips in the event that the
defaults didn't match the battery in question.
For chips with RAM data memory (and also those with flash/NVM data memory
if CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM is defined and the user has not
set module param dt_monitored_battery_updates_nvm=0) we now call
power_supply_get_battery_info(), check its values, and write battery
properties to chip data memory if there is a dm_regs table for the chip.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Add these to enable read/write of chip data memory RAM/NVM/flash:
bq27xxx_battery_seal()
bq27xxx_battery_unseal()
bq27xxx_battery_set_cfgupdate()
bq27xxx_battery_soft_reset()
bq27xxx_battery_read_dm_block()
bq27xxx_battery_write_dm_block()
bq27xxx_battery_checksum_dm_block()
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Declare bus.write/read_bulk/write_bulk().
Add I2C write/read_bulk/write_bulk() to implement the above.
Add bq27xxx_write/read_block/write_block() helpers to call the above.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Acked-by: "Andrew F. Davis" <afd@ti.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
power_supply_get_battery_info() reads battery data from devicetree.
struct power_supply_battery_info provides battery data to drivers.
Its fields correspond to elements in enum power_supply_property.
Drivers may surface battery data in sysfs via corresponding
POWER_SUPPLY_PROP_* fields.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On the CPCAP PMIC we can use the ADCs for monitoring the battery,
and there is also a coulomb counter. So let's add basic support for
the battery driver.
I did not add any capacity prediction as that should probably be
done in the user space. Or at least user space should tell the kernel
some battery statistics and then the kernel driver could display the
capacity based on that.
Cc: devicetree@vger.kernel.org
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On Broadcom MIPS STB platforms, BMIPS_GENERIC is the Kconfig symbol that
is used, make this reboot driver default to that value to make sure we
can reboot a system properly.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Since commit 37eb56dc79 ("arm64: Add Broadcom Set Top Box Kconfig
entry point") we have ARCH_BRCMSTB also visible on ARM64 platform, yet
this reboot driver was not selectable, so fix that.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Assembly in at91_lpddr_poweroff has r0 in the clobber list but uses r6.
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Assembly in at91_lpddr_poweroff has r0 in the clobber list but uses r6.
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Since we now support the standard 'input_current_limit' property by
commit 3fb319c2cd ("power: supply: twl4030-charger: add writable INPUT_CURRENT_LIMIT property")
we can now remove the nonstandard 'max_current' sysfs attribute.
See Documentation/power/power_supply_class.txt line 125
Both are functionally equivalent. From ABI point of view it is just a rename
of the property.
This also removes the entry in Documentation/ABI/testing/sysfs-class-power-twl4030
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
There are several cut and past bugs here. ltc3651_charger->charger is
NULL at this point, so we return success instead of the intended error
codes.
Fixes: c94d4ed017 ("power: supply: Add ltc3651-charger driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[Wei Yongjun found the same issue independently]
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This fixes the TODO to parse strings and convert them to enum values
when writing to a power_supply class property sysfs attribute.
There is at least one driver that has a writable enum property that
previously could only be written as an integer, so a fallback to writing
enums as integers instead of strings is provided so we don't break existing
userspace programs.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Apple currently supports three very common USB chargers:
https://www.apple.com/power-adapters/
These chargers implement a proprietary Apple method for advertising
1A, 2.1A, and 2.4A at 5V called "Brick ID".
In addition, 3rd parties implement the same charging method in many
charging accessories that work with iOS devices.
Devices that have charger detection chips such as the Pericom PI3USB9281,
eg. Google Chromebook Pixel 2015, are capable of detecting
these chargers, so let's add a type to facilicate passing that info
up to userspace.
This adds a separate power supply type for Apple's proprietary
"Brick ID" charging method.
Signed-off-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
On devicetree using platforms the devicetree can provide info on which
power-supplies supply another power-supply through phandles.
This commit adds support for providing this info on non devicetree
platforms through the platform code setting a supplied-from
device-property on the power-supplies parent device.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Drop static on a local variable, when the variable is either first
initialized or never used, on every possible execution path through the
function. The static has no benefit, and dropping it reduces the code
size.
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
// </smpl>
The change in code size is indicates by the following output from the size
command.
before:
text data bss dec hex filename
2865 252 8 3125 c35 drivers/power/supply/axp20x_usb_power.o
after:
text data bss dec hex filename
2822 252 0 3074 c02 drivers/power/supply/axp20x_usb_power.o
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The LTC3651 reports its status via GPIO lines. This driver translates
the GPIO levels to battery charger status information via sysfs.
It relies on devicetree to supply the IO configuration.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
With the ADC driver working, we can now fix the voltage table based on
the values read from the ADC.
Note that unlike the ICHRG registers, the VCHRG register bits don't
match the MC13783UG.pdf.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Turns out a similar battery charger hardware is documented for NXP MC13783
PMIC in "MC13783 Power Management and Audio Circuit Users's Guide" named
MC13783UG.pdf. Looks like the CPCAP charge current table matches that, so
let's start using the nominal values from it.
While at it, let's also add comments to some of the mystery CPCAP charger
registers based on the MC13783UG.pdf documentation.
Note that this patch does not contain any functional changes, the register
values being used stay the same.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
* New battery driver for AXP20X and AXP22X PMICs
* Improve max17042_battery for usage on x86
* Misc small cleanups & fixes
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Merge tag 'for-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull more power-supply updates from Sebastian Reichel:
"The power-supply subsystem has a few more changes for the v4.12 merge
window:
- New battery driver for AXP20X and AXP22X PMICs
- Improve max17042_battery for usage on x86
- Misc small cleanups & fixes"
* tag 'for-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (34 commits)
power: supply: cpcap-charger: Keep trickle charger bits disabled
power: supply: cpcap-charger: Fix enable for 3.8V charge setting
power: supply: cpcap-charger: Fix charge voltage configuration
power: supply: cpcap-charger: Fix charger name
power: supply: twl4030-charger: make twl4030_bci_property_is_writeable static
power: supply: sbs-battery: Add alert callback
mailmap: add Sebastian Reichel
power: supply: avoid unused twl4030-madc.h
power: supply: sbs-battery: Correct supply status with current draw
power: supply: sbs-battery: Don't ignore the first external power change
power: supply: pda_power: move from timer to delayed_work
power: supply: max17042_battery: Add support for the SCOPE property
power: supply: max17042_battery: Add support for the CHARGE_NOW property
power: supply: max17042_battery: Add support for the CHARGE_FULL_DESIGN property
power: supply: max17042_battery: mAh readings depend on r_sns value
power: supply: max17042_battery: Add support for the VOLT_MIN property
power: supply: max17042_battery: Add support for the TECHNOLOGY attribute
power: supply: max17042_battery: Add external_power_changed callback
power: supply: max17042_battery: Add support for the STATUS property
power: supply: max17042_battery: Add default platform_data fallback data
...
Android does not seem to set the trickle charger bits, and these
seem to be only used by the bootloader when bringing up a
completely discharged battery. So let's keep the trickle charging
bits disabled and avoid misconfiguring the hardware.
Fixes: 0c9888e3c1 ("power: supply: cpcap-charger: Add minimal
CPCAP PMIC battery charger")
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Zero is a valid register value for for 3.8V charging.
Fixes: 0c9888e3c1 ("power: supply: cpcap-charger: Add minimal
CPCAP PMIC battery charger")
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
We have the charge voltage wrong, it should be 4.35V instead of 4.2V.
This will cause the battery to never get fully charged.
I noticed this when looking at the Andoid kernel battery and charger
status for a fully charged battery:
POWER_SUPPLY_VOLTAGE_NOW=4351000
Also the battery on droid 4 says "4.35, 1735/1785mAh (min/typ),
6.6/6.8 Wh (min/typ)". Presumably the 4.35 on the battery is the
charge voltage.
And finally, on Android the CPCAP CRM register is set to 0x03b5 where
the b is the charge voltage.
Let's fix the charge voltage define and update the charge configuration
to use the 4.35V setting.
Fixes: 0c9888e3c1 ("power: supply: cpcap-charger: Add minimal
CPCAP PMIC battery charger")
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Linus Walleij