Add a mechanism to configure the power source of
the charger indicator LED anode on the PM8921.
The configuration is specified using platform data.
Change-Id: I9a436f634ddfd5d1822f1fc8beab4936fa8bb61d
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
Use the maximum number of channels added in the
ADC entry list in the board to check for channel
validity. This patch also adds additional checks
in the driver to validate the requested channel.
CRs-Fixed: 339631
Change-Id: I347f0d39a00b6ee12976ec2c24843626b54617d4
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Register a PMIC pm8xxx thermal alarm device in the pm8018-core
driver. This device will allow userspace to monitor the
temperature of the PMIC die.
Change-Id: I888c0737dd991da9eaec039b20b381a2bfd7923c
Signed-off-by: David Collins <collinsd@codeaurora.org>
The charger hardware has a +/-30mv error for vdd_max settings. This
means that when vdd_max is set to 4200mV the actual voltage on vph_pwr
line could range from 4170mV to 4230mV. This further means that when
constant current to constant voltage transition happens, the battery
may not be charged up to 4200mV - leading to an premature end of charge.
Fix this by implementing periodic IR compensation. On a device measure the
resistance from the vbat terminal to the ground by shorting the +ve and
-ve of the battery terminals (without a battery), this will be referred to
as rconn in the description. In the code it is rconn_mohm to reflect the
units.
The voltage at battery terminal will be
Vbat(terminal) = Vbat(xoadc) + Ibat * rconn
where Ibat is the current flowing out of (or into if -ve) of the battery.
Vbat(xoadc) and Ibat can be obtained by using the override mode of the
bms. So Vbat(terminal) can be deduced and compensated by increasing
vdd_max. This also helps in increasing constant current mode thereby
decreasing constant voltage mode and decreasing the overall charging time.
The value of rconn will be specific to a PCB layout, it is
passed in from platform_data.
Change-Id: If8df93333ca6b0bad35505895a4fc5577562fadd
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
This function is called from more places than just exit
functions. Also remove the _init/__exit markings from the header
file as they're not necessary in function prototypes.
WARNING: vmlinux.o(.devinit.text+0x7840): Section mismatch in
reference from the function pm8038_add_subdevices() to the
function .devexit.text:pm8xxx_irq_exit()
The function __devinit pm8038_add_subdevices() references
a function __devexit pm8xxx_irq_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __devexit annotation of
pm8xxx_irq_exit() so it may be used outside an exit section.
Change-Id: I0d2e285a03958e0fe68af48df94523aa1d0476c0
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* changes:
power: pm8921-bms: add api to simultaneously read vbatt and ibatt
power: pm8921-bms: calibrate xoadc more often
power: pm8921-bms: add protection against divide by zero
power: pm8921-charger: fix 10mv error on vdd_max
power: pm8921-charger: fix reverse boosting
The compensation algorithms need simultaneous readings of the battery
voltage (vbatt) and the current flowing through it (ibatt).
One needs to put the BMS in override mode to get simultaneous vbatt
and ibatt readings.
Note that since one would need to sleep for 20 milliseconds after the
BMS is put in override mode the spin_lock is changed to mutex in the bms
driver.
Change-Id: I1bfdc1f4e84d5d3c2cd6502dd66afdfba650cc0d
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Improve the values of the battery voltage read from xoadc by periodically
calibrating the xoadc.
The xoadc needs to be calibrated every time a charger is plugged in
or plugged out. This is because the reference voltage shifts a bit
when a charger is plugged in.
Provide an api to calibrate xoadc. This api will be used by the charger
driver.
CRs-Fixed: 334825
Change-Id: I09735f6e5c5d4ab8be379fe001fff81c25c95397
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
PM8921 LPG banks can be configured to connect to DTESTx.
These DTEST lines can be used to observe LPG output.
Provide a feature that allows to enable DTEST modes for
a given LPG channel.
CRs-fixed: 337902
Change-Id: If881eb089aea2a66f7324af8ac906405eef4f81a
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
To ensure proper battery id dectection on LiQUID and MTP
use machine_is_msm8960/8064_mtp/cdp to determine which
calibration data to use for battery. If platform is
unknown fall back on regular battery id detection.
Change-Id: I2f5629572d1e5fcac0a2feb114947b91a96f3bf0
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Add the calibration data and battery ID information for the
Desay 5200 mAh battery which is used in LiQUID platform
devices.
Change-Id: I19ff1251ee3e71fa71d4fa0c83143d4b7667a80c
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
This call configures the XO to the MP3 clocks. These
clocks route over PMIC gpios and are used as an independent
clock source for MP3, haptics.
Change-Id: Ib95f277eae8bcb9a7e9da12fc5fe2baec4e72493
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Add the functions required to control boost regulators on PMIC
PM8XXX chips. These regulators would typically be used to output
5.0 V for USB OTG but may be programmed for voltages between
4.0 V and 5.55 V.
Change-Id: I016b9ffa41853c18fda919048eb06002d9ca0c64
Signed-off-by: David Collins <collinsd@codeaurora.org>
Add leds as a sub device to pmic 8038. This will also
take care of filling platform data for leds driver
which comes as part of pmic pdata.
Change-Id: I3814a0f36f79612684e4a2305e3c5c19dc64cb00
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Specify the SSBI test register address for each of the voltage
switches in PMIC 8018, 8038, and 8921 core drivers. This will
allow for future handling of over current protection (OCP) in
the pm8xxx-regulator driver.
Also define the OCP IRQs associated with each of the switches
on these PMICs.
Change-Id: Icfc51c01680e6e95b4348051c764f16cb91b4916
Signed-off-by: David Collins <collinsd@codeaurora.org>
PM8921 family provides a pullup enable bit to support USB ID.
Add the API for such support.
Change-Id: Id3056af070080c1c12f27720020ae718fc6f34f6
Signed-off-by: Willie Ruan <wruan@codeaurora.org>
Add pre-divide=6 and update the max period based on new pre-divide.
Also update pre-divide related macros for better readability.
Change-Id: I5298c373c78f8723dab9a735e4d94f89798800d5
Signed-off-by: Willie Ruan <wruan@codeaurora.org>
The current code assumes that the cool or warm battery temperature
can only be +ve numbers. Remove this restriction by allowing -ve
temperature settings.
Change-Id: I3c54b854a8fdf934efcf1ff21b36c7a0f763692a
CRs-Fixed: 320660
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
The PMIC PM8917 chip is very similar to the PM8921 chip. Modify
the pm8921-core driver so that it can also handle PM8917 chip
which has different number of gpios and mpps, and no LPG/PWM,
no LEDs and no vibrator.
Change-Id: I252adc2ddc4bcd9bb8b8fb5113444356ba7c969e
Signed-off-by: Willie Ruan <wruan@codeaurora.org>
Add a new API, pm8xxx_preload_dVdd, which will preload the dVdd
regulator on PMIC PM8901 chips during off state. This can help
to reduce fluctuations in the dVdd voltage during startup at the
cost of additional off state current draw.
This API should only be called if dVdd startup issues are
suspected.
Change-Id: Ic7ee60539de37a761bb9ca6c5200327a7b99da89
CRs-Fixed: 326086
Signed-off-by: David Collins <collinsd@codeaurora.org>
Add supported power devices such as charger, bms and CCADC.
These devices are required to be enabled to provide charging
functionality to the 8930 platform.
Change-Id: Iae5182ff26ba1cbcb256aeb1aee619f7a368765f
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Allow the pm8921-charger driver to initiate charging on a
registered 3rd party charging driver through the power supply class.
Also enable the maintenance of charging properties such as online
and charge type using the power supply class rather than
directly depending on the 3rd party driver.
When a external charger is registered using power_supply_register
the external_power_changed callback of the charger driver checks
for an external charger named "dc". This removes the dependency
of a 3rd party charger to call directly into the charger driver.
Also, update the isl9519q driver to reflect the changes and
utilize power supply class calls to enable charging
on the isl chip from PM8921 charger driver.
This serves as an example for other 3rd party external
chargers supporting PMIC with high current charging.
Finally, add pr_fmt macro which automatically adds function name
to print statements and remove __func__ from individual print
statements.
Change-Id: If05e598be260d924ec3263bad33317cf4e7543a1
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
HouseKeeping ADC (HKADC) on the PMIC is used by clients
to measure voltage, current and temperature. Clients
include the Battery, Charger and Thermal clients that
require reading the ADC in real time. This also
supports reading the ADC channels that are mapped through
the PMIC MPP's such as the PA THERM channel.
Change-Id: I3c4fd9d368550c1cca168ea097e0d457d01d695e
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
USB can distinguish between types of USB connections such as a
DC charger or PC connection.
Let the USB drivers set the specifc power_supply_type via this
function.
CRs-Fixed: 326548
Change-Id: I31954b3f8d2b1e5fd72712e1f94f67fdbc2e205d
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Change the pm8018-core driver so that it registers devices for
the pm8xxx-regulator driver instead of for the pm8018-regulator
driver.
This necessitates changing board file platform data for existing
PMIC 8018 regulators so that additional pm8xxx-regulator data is
properly specified.
Change-Id: I3f64f756a6c48c0dd1684f8d8e98a6fa8dddd6ca
Signed-off-by: David Collins <collinsd@codeaurora.org>
Some board configurations have different needs for usb overvoltage
thresholds and debounce time for usb detection.
Provide apis to program threshold voltage, debounce time and
disable/enable overvoltage protection.
CRs-Fixed: 324137
Change-Id: Ie618ca12be819739a623cf41e5e1198305467aa5
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Add pm8xxx-regulator configuration data into the pm8038-core
driver. This adds support for PMIC PM8038 regulators.
Change-Id: I8d6e42d299141a6add3c41ca920d9186ad7fa3ee
Signed-off-by: David Collins <collinsd@codeaurora.org>
Change the pm8921-core driver so that it registers devices for
the pm8xxx-regulator driver instead of for the pm8921-regulator
driver.
This necessitates changing board file platform data for existing
PMIC 8921 regulators so that additional pm8xxx-regulator data is
properly specified.
Change-Id: I0d48f03344265bd1b7c160bceca944f8924c694c
Signed-off-by: David Collins <collinsd@codeaurora.org>
Create a PM8XXX regulator driver that can support PMIC PM8921
variants including: PM8018, PM8038, and PM8921.
Change-Id: I60d1302e4af9a4c5caa72301c904867acd2ebe0f
Signed-off-by: David Collins <collinsd@codeaurora.org>
Modify the scaling function routines for Battery temperature
and all channels whose units return milli-volts for voltage.
The Charger driver requires the Units of Voltage and temperature
in uV and 0.1 DegC according to the framework where all voltages,
currents, chargers, energies, time and temperature are in uV, uA,
uAh, uWh, seconds and tenths of degree Celsius unless otherwise
stated. In accordance with the above expected units, the scaling
functions are modified for all voltage channels and the Batt Therm.
This change fixes the XO Therm temperature scaling routine,
PA Therm and Batt id to use the ratiometric calibration.
XO Therm and PA therm units are returned as milli-degree and
degree Centigrade respectively.
Accordingly, update the clients of xoadc to handle this change in
units.
CRs-Fixed: 315797
Change-Id: I6fa3b808062563fef3b0e70cc694e3132421f735
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
* changes:
power: pm8921-bms: expose start and end charging parameters
power: pm8921-bms: refactor BMS driver code
power: pm8921-bms: force max_voltage at end of charge
Significant sleep current is seen with BTM enabled during suspend.
Fix this by disabling BTM before entering suspend and re-enable it
on resume. A board file option may be added to disable this feature.
By default battery temperature monitoring will be turned off on
suspend.
Change-Id: I6614dc076d8ea69f25840dd3eeef94f9739e392f
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
When an end of charge with a full battery happens, the bms driver
fakes max ocv and zero cc. To force max ocv the driver currently
assumes that the first row last column will have the highest profiled
voltage. This may not be true always.
Pass the maximum voltage from platform data and use that to force
max ocv.
Change-Id: I29c71a20648fb2f9066f2f82e14a6080692c63fd
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Add support for the Qualcomm PM8038 PMIC chip. The core driver
will communicate with the PMIC chip via the MSM SSBI bus.
Initial support is provided for: IRQ, GPIO, MPP, RTC, Power Key,
Misc, and Debug.
Change-Id: I83f995cc238699100a05e82d04b45ea2a63eb667
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
Some use cases require higher input currents which are out of range
of USB specification.
Fix this by adding a call to disable the input current limit and
warn the user with an adequate message that input current limiting
is disabled when the function is called
CRs-Fixed: 318511
Change-Id: I7e2baa0378c94b0b9af22c00d8605b9df8d4f826
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
The PMIC PM8922 chip is very similar to the PM8921 chip. Modify
the pm8921-core driver so that it can also handle PM8922 chips.
Change-Id: Ibae402ff65d1af4e0f18e4a66304f7ac609065b4
Signed-off-by: David Collins <collinsd@codeaurora.org>
Add the revision mask for PMIC8921 revision 3.0 to avoid
printing unknown PMIC revision in kernel log.
Change-Id: Ied28321866551aecbb1658dda5f17018256254a3
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Facilitate the driver to support PMICs (such as PM8901)
with different IRQ base address.
Change-Id: I285a9b859b795508620ea6dfd7b5ef6953e7aeb3
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Until now only the BMS system was using the ccadc so there was
no need to create a separate ccadc driver.
However we can run in a configuration with BMS disabled
and clients won't be able to read battery current via ccadc.
Separate the ccadc from the bms, this change in is preparation
to add a ccadc api to read the battery current.
Change-Id: Ib96b146d91d01d196df9291eb23432cd430db4d0
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Since the driver will be changing the max vdd if the battery
temperature enters warm or cool zone, it should also change
the vbatdet voltage so resume of charging can begin accordingly.
Also provide a means to quickly debug is the battery is in cool/warm
zone.
Change-Id: I0fe83a4fabf76711bf86377c3ac23cceecb6e98b
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Move the following subdevices to use the pm8xxx interface -
mpp, irq, gpio, keypad, power-key, leds, othc, vibrator,
rtc, batt-alarm, thermal, upl, nfc, pwm, xoadc, regulators,
xo-buffers, charger.
This allows usage of a common driver for modules which are same
across multiple PM8XXX PMICs. It also provides flexibility
to add/remove subdevices for multiple board configurations.
Change-Id: Id9795552fc9f4a2c920c070babfaef1f4cd6ca61
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
The API configures the PMIC to ignore the PS_HOLD low
signal, which can be used during debugging.
Change-Id: I162657934e34da081eb897d64ffed36ad48e4eff
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
The API configures PMIC for different behaviour on hard reset.
The different options are to disable hard reset, shutdown or
restart on hard reset.
Change-Id: I214d563e904dd7e73c98a454866718a60a11b6dd
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
* changes:
mfd: pm8xxx-misc: Add pm8xxx watchdog reset control API
mfd: pm8xxx-misc: Add pm8xxx smpl based API's
mfd: pm8xxx-misc: Add the pm8xxx coincell chg API
mfd: pm8xxx-misc: Add a ISR to handle 32 kHz OSC halt
Jay Chokshi
Siddartha Mohanadoss
David Collins
Abhijeet Dharmapurikar
Stephen Boyd
Linux Build Service Account
David Keitel
Amy Maloche
Willie Ruan
Anirudh Ghayal