Eric Lee / smarc-fsl-linux-kernel

07 Sep, 2014

1 commit

  • a8adcc901   power_supply: Add boot and calibration attributes ... Browse Code »

    Usually PMIC's come with coulomb counting mechanism which can be
    used to implement a Fuel Gauginig solution in Software itself.
    One of key input to these SW Fuel Gauge solutioons is the boot up
    parameters like boot voltage and boot current.

    This patch adds the VOLTAGE_BOOT and CURRENT_BOOT power supply attributes
    to report bootup voltage and current.

    This patch also adds CALIBRATE power supply attribute which useful is
    for calibrating the battery/coulomb counter.

    Signed-off-by: Ramakrishna Pallala
    Signed-off-by: Sebastian Reichel

    Ramakrishna Pallala
     

19 Jul, 2014

1 commit

  • 6bb1d272d   power_supply: Add inlmt,iterm, min/max temp props ... Browse Code »

    Add new power supply properties for input current, charge termination
    current, min and max temperature

    POWER_SUPPLY_PROP_TEMP_MIN - minimum operatable temperature
    POWER_SUPPLY_PROP_TEMP_MAX - maximum operatable temperature

    POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT - input current limit programmed
    by charger. Indicates the input current for a charging source.

    POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT - Charge termination current used
    to detect the end of charge condition

    Signed-off-by: Jenny TC
    Acked-by: Pavel Machek
    Signed-off-by: Sebastian Reichel

    Jenny TC
     

29 Oct, 2013

1 commit

18 Nov, 2012

1 commit

23 Aug, 2012

2 commits

  • 2815b786c   power_supply: Add new power supply properties CHARGE_CURRENT/VOLTAGE_MAX ... Browse Code »

    There are different types of chargers avalibale like AC, Solar, USB,
    etc.. Even in USB we have different types SDP/DCP/CDP/ACA and all these
    chargers have different o/p ratings. For example SDP supports only 500mA
    of charge current whereas AC charger can support upto 8A or more.

    Similarly batteries also come with charge current and voltage ratings
    and these ratings vary depending on its capacity and the technology
    used.

    This patch adds two new power supply properties
    CONSTANT_CHARGE_CURRENT_MAX and CONSTANT_CHARGE_CURRENT_MAX.

    Signed-off-by: Ramakrishna Pallala
    Signed-off-by: Anton Vorontsov

    Ramakrishna Pallala
     
  • b1b56872b   power_supply: Add new power supply AUTHENTIC property ... Browse Code »

    It is possible that users can use non-standard chargers or use invalid
    batteries especially with mobile devices.

    This patch adds a new power supply property called 'AUTHENTIC' to
    indicate this to the user(user space).

    Signed-off-by: Ramakrishna Pallala
    Signed-off-by: Anton Vorontsov

    Ramakrishna Pallala
     

14 Jul, 2012

1 commit

  • e908c4180   power_supply: Add min/max alert properties for CAPACITY, TEMP, TEMP_AMBIENT ... Browse Code »

    Minimum and maximum alerts on power supply properties will help or allow
    the user space to "proactively" create policies like connect/disconnect
    charger or stop/start the user apps based on capacity or temperature
    parameters.

    These parameters can be used to avoid unnecessary polling from user space
    and even from kernel space if the underlying HW can support INT triggers
    (ex: max17042/47).

    This patch adds the following power supply alert type properties:

    CAPACITY_ALERT_MIN
    CAPACITY_ALERT_MAX
    TEMP_ALERT_MIN
    TEMP_ALERT_MAX
    TEMP_AMBIENT_ALERT_MIN
    TEMP_AMBIENT_ALERT_MAX

    Signed-off-by: Ramakrishna Pallala
    Signed-off-by: Anton Vorontsov

    Ramakrishna Pallala
     

20 Jun, 2012

1 commit

  • 3824c4771   power_supply: Add constant charge_current and charge_voltage properties ... Browse Code »

    Constant Charge Current(CC) is charging parameter which limit the
    maximum current which can be pumped into the battery during charge cycle.

    Constant Charge Voltage(CV) is also charging parameter which limit the
    maximum voltage that battery can reach during charge cycle.

    It is very common practice that at low or high temperatures we
    do not charge the batteries upto it's fullest charge voltage
    to avoid battery and user safety issues.

    These sysfs properties will be useful for debug and to implement
    certain user space policies like "Charging limited due to OverTemp".

    Signed-off-by: Ramakrishna Pallala
    Signed-off-by: Anton Vorontsov

    Ramakrishna Pallala
     

05 May, 2012

1 commit

02 Jul, 2009

1 commit

01 Jul, 2009

1 commit

  • b294a290d   Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL" ... Browse Code »

    This reverts commit 8efe444038a205e79b38b7ad03878824901849a8 and
    4cbc76eadf56399cd11fb736b33c53aec9caab8c.

    Richard@laptop.org was apparently using CAPACITY_LEVEL for debugging
    battery/EC problems, and was upset that it was removed. This readds it.

    Conflicts:

    Documentation/power_supply_class.txt

    Signed-off-by: Andres Salomon
    Signed-off-by: Anton Vorontsov

    Andres Salomon
     

13 May, 2008

1 commit

  • 8e552c36d   power_supply: add CHARGE_COUNTER property and olpc_battery support for it ... Browse Code »

    This adds PROP_CHARGE_COUNTER to the power supply class (documenting it
    as well). The OLPC battery driver uses this for spitting out its ACR
    values (in uAh). We have some rounding errors (the data sheet claims
    416.7, the math actually works out to 416.666667, so we're forced to
    choose between overflows or precision loss. I chose precision loss,
    and stuck w/ data sheet values), but I don't think anyone will care
    that much.

    Signed-off-by: Andres Salomon
    Signed-off-by: Anton Vorontsov

    Andres Salomon
     

13 Mar, 2008

1 commit