pdata is being null checked twice, the 2nd check is redundant code
and can be removed.
Fixes CoverityScan CID 1392340 "Logically dead code"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Setting the irq_enable bits is taken care of by the irq chip when we
request the irqs and the driver should not be meddling with the
irq?_en registers itself.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
If there is no ti,ac-detect-gpios configured, it is normal to
have failed reads of the options register. So, hold back on the
log spamming.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
It is possible to verify AC adapter presence via a register read, without
any physical connection to the ACOK pin on the charger. Allow this.
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Prior to this commit the code was using 1 notifier_block for all
types of charger cable, this is incorrect as the notifier_block
becomes part of a linked-list and now the same notifier_block
is part of 3 linked lists.
This commit fixes this by using a separate nb per extcon cable.
Note this happened to work fine sofar because axp288_charger was the only
listener, so when added to each of the 3 notifier chains, the next pointer
in the nb would be set to 0, so we've 3 heads pointing to the same nb,
with its next pointing to NULL. But as soon as we mix in a second extcon
consumer things will go boom.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Add a MODULE_DEVICE_TABLE to fix the module not auto-loading.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Setting the irq_enable bits is taken care of by the irq chip when we
request the irqs and the driver should not be meddling with the
irq?_en registers itself.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
To set a bit to 1 one needs to pass the mask for the bit to set
as second argument into regmap_update_bits, not "1".
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Do not wait for an extcon notification before processing the cable
states, instead queue the otg / cable work on probe to make sure we
immediately process the initial hardware state.
Note this also requiree moving the getting of the USB_HOST cable state
from the extcon notifier to the workqueue function.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Remove info->health, info->present and info->online caching, as no code
is reading the cached values.
Remove if (changed) check before calling power_supply_changed(), we
return early from axp288_charger_extcon_evt_worker if nothing has
changed, so the check is not needed.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Deal with the charger type changing without a vbus-disconnect being
reported in between the 2 charger type states:
-Do not return from axp288_charger_extcon_evt_worker early in this case
(track old_chg_type)
-Make calling axp288_charger_enable_charger with the same value as before
a nop, to avoid the need for the caller to check this
-Do no do a dev_err when axp288_charger_enable_charger returns an error,
axp288_charger_enable_charger already returns an error itself
-Disable the charger before changing the charge-current setting (nop if
vbus was seen as disconnected before the change)
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Nothing was setting info->otg.cable, so the extcon_get_cable_state_
calls on it would always return -EINVAL.
This commit fixes this by actually setting info->otg.cable using the new
extcon_get_extcon_dev_by_cable_id function.
This commit also makes failing to register the extcon notifier for the
USB_HOST cable an error rather then a warning, because we MUST have this
notfier to properly disable the VBUS path when in host mode so that we're
not drawing current from the 5V boost converter which is supplying power
to the otg port when in host mode.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Move the charger_init_hw_regs() above the power_supply_register call,
the axp288_charger_usb_set_property() uses axp288_chrg_info.max_cv and
.max_cc which get set by charger_init_hw_regs().
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
The extcon notifier work calls power_supply_changed on the power_supply
we register, so the extcon notifiers should be registered after we
register the power_supply.
While touching this code anyways, refactor the code for the 3 cable types
into a loop to avoid code repetition.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Use devm_power_supply_register instead of power_supply_register,
this avoids the need to do manual cleanup and results in quite
a nice code cleanup.
Note it may seem excessive to add a "struct device *dev" helper local
variable for the 1 time it is used in this patch, but future patches
in this series also use it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This adds support for sbs-charger compilant chips as defined here:
http://sbs-forum.org/specs/sbc110.pdf
This was tested on a arm board connected to an LTC4100 battery charger
chip.
Signed-off-by: Nicolas Saenz Julienne <nicolas.saenz@prodys.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
So what if there is a status_gpio specified? bq24735_charger_is_present()
do have a working fallback for the case of no status_gpio.
Simplify this by not special casing setups w/o status_gpio, folding
two consecutive if-blocks in the process.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
During probe, it makes no sense to take care to first not issue any
i2c commands to verify if the connected part really is a bq24735, to
later simply fail the probe in the next step when trying to configure
the charger. So, delay configuration of the charging parameters until
the charger is accessible (i.e. when the AC adapter is present) as
part of enabling the charging.
This also fixes the rather serious issue that the charging parameters
are lost when the AC adapter is disconnected.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
bq24735_enable_charging() needs to call bq24735_config_charging(),
which is something to change later, this is just a preparatory patch.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
"tps65217-charger" is more appropriate name because the driver supports
not only AC but also USB charger.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Replace 'ac' of tps65217_charger structure with 'psy'.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This driver supports AC and USB chargers. Generic name is preferred.
Replace 'ac_online' with 'online'.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
TPS65217 has two charger interrupts - AC and USB power status change.
Interrupt number in the TPS65217 driver data:
IRQ number is only used on requesting the interrupt, so no need to keep
it inside the driver data.
Interrupt handler:
Check not only AC but also USB charger status.
In both cases, enable charging operation.
Interrupt request:
If an interrupt number is invalid, then use legacy polling thread.
Otherwise, create IRQ threads to handle AC and USB charger event.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Use the task_struct variable for running polling thread. If polling task
is activated, then use it to stop running thread.
This is a preceding step of supporting two interrupts of TPS65217 charger,
so checking single IRQ number is not appropriate when the module is removed.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This patch replaces the deprecated extcon API as following:
- extcon_set_cable_state_() -> extcon_set_state_sync()
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This patch uses the resource-managed extcon API for extcon_register_notifier()
and replaces the deprecated extcon API as following:
- extcon_get_cable_state_() -> extcon_get_state()
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Use managed resource function devm_power_supply_register instead of
power_supply_register to simplify the error path by allowing unregistering
to happen automatically on error and remove.
Removing max8997_battery_remove function also as it is now redundant.
Also removing out of memory printk message after kzalloc as there is
already enough information on failure.
Signed-off-by: Srikant Ritolia <s.ritolia@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
The X-Powers AXP223 shares most of its behaviour with the AXP221 PMIC
but allows the VBUS power supply max current to be set to 100mA (like
the AXP209 PMIC).
This basically adds a new compatible to the VBUS power supply driver and
adds a check on the compatible when setting current max limit.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
AXP20X and AXP22X PMICs allow setting the min voltage and max current of
VBUS power supply. This adds entries in sysfs to allow to do so.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This replaces calls to of_device_is_compatible to check data field of
of_device_id matched when probing the driver.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
If the ac-detect gpio does not support interrupts, provide a fallback
to poll the gpio at a configurable interval.
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
In order for the MSB -> LSB latching to work correctly we must read the
2 8 bit registers of a 12 bit value in one consecutive read.
This fixes voltage_ocv reporting inconsistent values on my tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
In order for the MSB -> LSB latching to work correctly we must read the
2 8 bit registers of a 15 bit value in one consecutive read.
This fixes charge_full reporting 3498768 on some reads and 3354624 one
other reads on my tablet (for the 3354624 value the raw LSB is 0x00).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
If reading the register fails, return the actual error code, instead
of the uninitialized val variable;
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
When the axp288_faul_gauge driver was originally merged, it was
merged with a dependency on some other driver providing platform
data for it.
However the battery-data-framework which should provide that data
never got merged, resulting in x86 tablets / laptops with an axp288
having no working battery monitor, as before this commit the driver
would simply return -ENODEV if there is no platform data.
This commit removes the dependency on the platform_data instead
checking that the firmware has initialized the fuel-gauge and
reading the info back from the pmic.
What is missing from the read-back info is the table to map raw adc
values to temperature, so this commit drops the temperature and
temperature limits properties. The min voltage, charge design and
model name info is also missing. Note that none of these are really
important for userspace to have.
All other functionality is preserved and actually made available
by this commit.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=88471
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
When the axp288_charger driver was originally merged, it was merged with
a dependency on some other driver providing platform data for it.
However the battery-data-framework which should provide that data never
got merged, so the axp288_charger as merged upstream has never worked,
its probe method simply always returns -ENODEV.
This commit removes the dependency on the platform_data instead reading
back the charging current and charging voltage that the firmware has set
and using those values as the maximum values the user may set.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Make charger_init_hw_regs propagate i2c errors, instead of only warning
about them and then ignoring them.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
As the power supply framework provides a way to store and retrieve
private supply data, use it.
In the process, change the platform data for wm97xx_battery from a
container of a single struct wm97xx_batt_pdata to the direct point to wm97xx_batt_pdata.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Use DEVICE_ATTR_RO for read only attributes. This simplifies the source
code, improves readbility, and reduces the chance of inconsistencies.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@ro@
declarer name DEVICE_ATTR;
identifier x,x_show;
@@
DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
@script:ocaml@
x << ro.x;
x_show << ro.x_show;
@@
if not (x^"_show" = x_show) then Coccilib.include_match false
@@
declarer name DEVICE_ATTR_RO;
identifier ro.x,ro.x_show;
@@
- DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
+ DEVICE_ATTR_RO(x);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
The alias for the ipaq_micro_battery driver is incorrect, fix it so the
module can be auto-loaded.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
The BQ27510 and BQ27520 use a slightly different register map than the
BQ27500, add a new type enum and add these gauges to it.
Fixes: d74534c277 ("power: bq27xxx_battery: Add support for additional bq27xxx family devices")
Based-on-patch-by: Kenneth R. Crudup <kenny@panix.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
There's a typo, it should do pm_runtime_get_sync, not put.
Fixes: d7bf353fd0 ("bq24190_charger: Add support for TI BQ24190 Battery Charger")
Cc: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
We checked that "pdata->chg_params" is non-NULL earlier in this function
so when we add "i" to it, it's still non-NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/power/supply/axp288_fuel_gauge.ko | grep alias
$
After this patch:
$ modinfo drivers/power/supply/axp288_fuel_gauge.ko | grep alias
alias: platform:axp288_fuel_gauge
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/power/supply/max8997_charger.ko | grep alias
$
After this patch:
$ modinfo drivers/power/supply/max8997_charger.ko | grep alias
alias: platform:max8997-battery
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
According to the datasheet, MAX17040 has six 16-bit registers.
Register reads and writes are only valid if all 16 bits are transferred.
Any write command that is terminated early is ignored.
So it's better to change register transacton length from 8 bits to 16 bits.
Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
