power_supply status changes for the bq27x00 are only
noticed via polling, not via interrupts. So they are never
the source of events which should reliably wake the system
from suspend.
So it is appropriate to register as a no_ws power source,
just like the ACPI battery.
This removes some debugging messages which occasionally
confusingly identify bq27x00 as a wakeup source.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
In current driver, power_supply_changed() is called whenever any of
the battery attribute changed. This causes kernel to increases the
'/sys/power/wakeup_count' and make suspend not working correctly.
This patch change this behavior to call power_supply_changed()
only when the battery capacity changed.
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: David Riley <davidriley@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
- SOC is at 0x1C so we must add 0x4 as stated in the comment to read the
right value.
- DCAP is at 0x3c so we also must use a value with the right offset to get
the correct design capacity.
Actually testing on a bq27410 which has the same register map as bq27425
(but adds new registers).
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This patch fix the following issues.
- Flag for bq27742 is 2 bytes contracy to 1 byte for older hardware
- Don't read FLAG_CI as bq27742 does not have it
- Use Battery full capacity register as last measure discharge
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Add support to bq27742 in bq27x00 driver. bq27742 register
addresses are mostly mostly the same as bq27500 addresses
with minor differences.
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
One an hdq buss, a missing device reads as 0xff, not -1.
So do a translation to allow detecting of a missing bus.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions for both platform and i2c drivers. Also, the unecessary
variable ret and labels batt_failed3, err_free were removed.
The following Coccinele script was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
The driver core clears the driver data to NULL after device_release or on
probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is
not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported temperature can be also negative, so cache value in non negative
Kelvin degree.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
commit a66f59ba2e
bq27x00_battery: Add support for BQ27425 chip
introduced 2 bugs.
1/ 'chip' was set to BQ27425 unconditionally - breaking support for
other devices;
2/ BQ27425 does not support cycle count, how the code still tries to
get the cycle count for BQ27425, and now does it twice for other chips.
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: Saranya Gopal <saranya.gopal@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
The merge is merely to fix conflicts before sending a pull request.
Conflicts:
drivers/power/ab8500_btemp.c
drivers/power/ab8500_charger.c
drivers/power/ab8500_fg.c
drivers/power/abx500_chargalg.c
drivers/power/max8925_power.c
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should not not report nominal available capacity if battery is not
calibrated, as we don't want to represent bogus values in the sysfs and
confuse userland.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Initialize return variable before exiting on an error path.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This patch adds support for BQ27425 (TI) chip. This chip is same as
BQ27500 with few registers removed and register address map changed.
The data sheet for this chip is publicly available at
http://www.ti.com/product/bq27425-g1
Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Addition of power average and health properties.
Signed-off-by: Syed Rafiuddin <srafiuddin@nvidia.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Merge with latest Linus' tree, as I have incoming patches
that fix code that is newer than current HEAD of for-next.
Conflicts:
drivers/net/ethernet/realtek/r8169.c
Pull trivial tree from Jiri Kosina:
"It's indeed trivial -- mostly documentation updates and a bunch of
typo fixes from Masanari.
There are also several linux/version.h include removals from Jesper."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (101 commits)
kcore: fix spelling in read_kcore() comment
constify struct pci_dev * in obvious cases
Revert "char: Fix typo in viotape.c"
init: fix wording error in mm_init comment
usb: gadget: Kconfig: fix typo for 'different'
Revert "power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c"
writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header
writeback: fix typo in the writeback_control comment
Documentation: Fix multiple typo in Documentation
tpm_tis: fix tis_lock with respect to RCU
Revert "media: Fix typo in mixer_drv.c and hdmi_drv.c"
Doc: Update numastat.txt
qla4xxx: Add missing spaces to error messages
compiler.h: Fix typo
security: struct security_operations kerneldoc fix
Documentation: broken URL in libata.tmpl
Documentation: broken URL in filesystems.tmpl
mtd: simplify return logic in do_map_probe()
mm: fix comment typo of truncate_inode_pages_range
power: bq27x00: Fix typos in comment
...
When reading flags, bq27x00_read() argument is inverted and causes
reads 2 of bytes for bq27200 and 1 byte for bq27500, while their register
sizes are 1 and 2 bytes respectively. This causes bq27500 upper flag
bits always to be returned as 0, causing full charge state to never be
reported correctly, so fix it.
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This reverts commit 270968c098.
Grazvydas Ignotas wrote:
After 270968c098 "bq27x00_battery: Fix reporting status value for
bq27500 battery" status doesn't seem to be reported correctly when the
battery is close to fully charged state. It reports "Not charging"
while in fact there is >130mA current flowing to the battery according
to current_now.
This status report seems to be based on CHG bit in status register,
but looking at the datasheet the description says "(Fast) charging
allowed", which I guess means that the chip recommends charging and
not that charging is actually going on? If you check the bit while
battery is discharging and it's not full, the bit is also set.
Suggested-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* power_supply_unregister call bq27x00_battery_get_property which
call bq27x00_battery_poll
* make sure that bq27x00_battery_poll will not call
schedule_delayed_work again after unregister (which cause OOPS)
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* Do not be noise if battery is not calibrated (use dev_dbg)
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* CI (Capacity Inaccurate) flag is set after full reset on bq27000 battery
* when is set, all capacity properties should be reported incorrectly,
because there was no learning cycle and battery was not calibrated
* instead reporting incorrect values, report -ENODATA
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
* This prevent reporting old current_now value for bq27000
* Also ask for current flags, to make sure that current_now
will be reported with correct signature
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Doing this by using 2 calls sometimes results in unexpected
values being returned on OMAP3 i2c controller.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
* Consistently use uppercase for hexadecimal values.
* Clarify/fix the unit of functions return value in its comment.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
The current code only reports whether the battery is charging or
discharging. But the battery also reports whether it is fully charged,
furthermore by look at if the battery is supplied we can tell whether it
is discharging or not charging.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch adds support for polling the battery state and generating a
power_supply_changed() event if it has changed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch adds a register cache to the bq27x00 battery driver.
Usually multiple, if not all, power_supply properties are queried at once,
for example when an uevent is generated. Since some registers are used by
multiple properties caching the registers should reduce the number of
reads.
The cache is valid for 5 seconds this roughly matches the internal update
interval of the current register for the bq27000/bq27200.
Fast changing properties(*_NOW) which can be obtained by reading a single
register are not cached.
It will also be used in the follow up patch to check if the battery status
has been changed since the last update to emit power_supply_changed events.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch adds support for the bq27000 battery to the bq27x00 driver.
The bq27000 is similar to the bq27200 except that it uses the HDQ bus
instead of I2C to communicate with the host system.
The driver is implemented as a platform driver. The driver expects to be
provided with a read callback function through its platform data. The read
function is assumed to do the lowlevel HDQ handling and read out the value
of a certain register.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch simplifies the drivers data structure and moves code to be
shared by the bq27000 and bq27200/bq27500 init functions into a common
function.
This patch has no functional changes, it only moves code around.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch changes get_property callback of the bq27x00 battery to return
-ENODEV for properties other then the PROP_PRESENT if the battery is not
present.
The power subsystem core expects a driver to behave that way.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
According to the bq27000 datasheet the current should be calculated by
the following formula:
current = AI * 3570 / 20
This patch adjust the drivers code accordingly.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch improves the precession of the temperature property of the
bq27x00 driver.
By dividing before multiplying the current code effectively cuts of the
last decimal digit. This patch fixes it by multiplying before dividing.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
This patch adds the type property to the bq27x00 battery driver.
All bq27x00 are lithium ion batteries.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>