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Commit 13c07190 authored by Linus Torvalds's avatar Linus Torvalds
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Merge tag 'for-v3.20' of git://git.infradead.org/battery-2.6 

Pull power supply and reset changes from Sebastian Reichel:
 "New drivers:
   - charger driver for Maxim 77693
   - battery gauge driver for LTC 2941/2943
   - battery gauge driver for RT5033
   - reset driver for R-Mobile platforms

  Convert drivers to restart handler framework:
   - arm-versatile
   - at91
   - st-poweroff

  Misc:
   - remove deprecated sun6i reboot driver
   - use alarmtimer instead of rtc in charger-manager
   - misc fixes"

* tag 'for-v3.20' of git://git.infradead.org/battery-2.6: (48 commits)
  power_supply: 88pm860x: Fix leaked power supply on probe fail
  power/reset: restart-poweroff: Remove arm dependencies
  power/reset: st-poweroff: Fix misleading Kconfig description
  power/reset: st-poweroff: Register with kernel restart handler
  power/reset: Remove sun6i reboot driver
  power/reset: at91: Register with kernel restart handler
  power/reset: arm-versatile: Register with kernel restart handler
  power: test_power: Use enum as index for array of supplies
  Add devicetree binding documentation for the LTC2941/LTC2943 driver
  Add LTC2941/LTC2943 Battery Gauge Driver
  power/reset: brcmstb: Add support for old 65nm chips
  power/reset: brcmstb: Use the DT "compatible" string to indicate bit positions
  power/reset: brcmstb: Make the driver buildable on MIPS
  power: charger-manager: Use alarmtimer for battery monitoring in suspend.
  power/reset: at91-poweroff: Fix error handling and other compiler warnings
  bq27x00_battery: Call power_supply_changed only when capacity changed
  bq27x00_battery: fix register offset for bq27425
  power: max14577: Remove SYSFS dependency from Kconfig
  power: bq24190_charger: suppress build warning
  power: reset: Add reset driver for R-Mobile platforms
  ...
parents c5ce28df 24727b45

Documentation/ABI/testing/sysfs-class-power

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@@ -32,3 +32,45 @@ Description: 
		Valid values:

		- 5, 6 or 7 (hours),

		- 0: disabled.



What:		/sys/class/power_supply/max77693-charger/device/fast_charge_timer

Date:		January 2015

KernelVersion:	3.19.0

Contact:	Krzysztof Kozlowski <k.kozlowski@samsung.com>

Description:

		This entry shows and sets the maximum time the max77693

		charger operates in fast-charge mode. When the timer expires

		the device will terminate fast-charge mode (charging current

		will drop to 0 A) and will trigger interrupt.



		Valid values:

		- 4 - 16 (hours), step by 2 (rounded down)

		- 0: disabled.



What:		/sys/class/power_supply/max77693-charger/device/top_off_threshold_current

Date:		January 2015

KernelVersion:	3.19.0

Contact:	Krzysztof Kozlowski <k.kozlowski@samsung.com>

Description:

		This entry shows and sets the charging current threshold for

		entering top-off charging mode. When charging current in fast

		charge mode drops below this value, the charger will trigger

		interrupt and start top-off charging mode.



		Valid values:

		- 100000 - 200000 (microamps), step by 25000 (rounded down)

		- 200000 - 350000 (microamps), step by 50000 (rounded down)

		- 0: disabled.



What:		/sys/class/power_supply/max77693-charger/device/top_off_timer

Date:		January 2015

KernelVersion:	3.19.0

Contact:	Krzysztof Kozlowski <k.kozlowski@samsung.com>

Description:

		This entry shows and sets the maximum time the max77693

		charger operates in top-off charge mode. When the timer expires

		the device will terminate top-off charge mode (charging current

		will drop to 0 A) and will trigger interrupt.



		Valid values:

		- 0 - 70 (minutes), step by 10 (rounded down)

Documentation/devicetree/bindings/arm/brcm-brcmstb.txt

+3 −1
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@@ -79,7 +79,9 @@ reboot 
Required properties



    - compatible

        The string property "brcm,brcmstb-reboot".

        The string property "brcm,brcmstb-reboot" for 40nm/28nm chips with

        the new SYS_CTRL interface, or "brcm,bcm7038-reboot" for 65nm

        chips with the old SUN_TOP_CTRL interface.



    - syscon

        A phandle / integer array that points to the syscon node which describes

Documentation/devicetree/bindings/mfd/max77693.txt

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@@ -41,6 +41,41 @@ Optional properties: 
	 To get more informations, please refer to documentaion.

	[*] refer Documentation/devicetree/bindings/pwm/pwm.txt



- charger : Node configuring the charger driver.

  If present, required properties:

  - compatible : Must be "maxim,max77693-charger".



  Optional properties (if not set, defaults will be used):

  - maxim,constant-microvolt : Battery constant voltage in uV. The charger

    will operate in fast charge constant current mode till battery voltage

    reaches this level. Then the charger will switch to fast charge constant

    voltage mode. Also vsys (system voltage) will be set to this value when

    DC power is supplied but charger is not enabled.

    Valid values: 3650000 - 4400000, step by 25000 (rounded down)

    Default: 4200000



  - maxim,min-system-microvolt : Minimal system voltage in uV.

    Valid values: 3000000 - 3700000, step by 100000 (rounded down)

    Default: 3600000



  - maxim,thermal-regulation-celsius : Temperature in Celsius for entering

    high temperature charging mode. If die temperature exceeds this value

    the charging current will be reduced by 105 mA/Celsius.

    Valid values: 70, 85, 100, 115

    Default: 100



  - maxim,battery-overcurrent-microamp : Overcurrent protection threshold

    in uA (current from battery to system).

    Valid values: 2000000 - 3500000, step by 250000 (rounded down)

    Default: 3500000



  - maxim,charge-input-threshold-microvolt : Threshold voltage in uV for

    triggering input voltage regulation loop. If input voltage decreases

    below this value, the input current will be reduced to reach the

    threshold voltage.

    Valid values: 4300000, 4700000, 4800000, 4900000

    Default: 4300000



Example:

	max77693@66 {

		compatible = "maxim,max77693";
@@ -73,4 +108,14 @@ Example: 
			pwms = <&pwm 0 40000 0>;

			pwm-names = "haptic";

		};



		charger {

			compatible = "maxim,max77693-charger";



			maxim,constant-microvolt = <4200000>;

			maxim,min-system-microvolt = <3600000>;

			maxim,thermal-regulation-celsius = <75>;

			maxim,battery-overcurrent-microamp = <3000000>;

			maxim,charge-input-threshold-microvolt = <4300000>;

		};

	};

Documentation/devicetree/bindings/power/ltc2941.txt

0 → 100644
+27 −0
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binding for LTC2941 and LTC2943 battery gauges



Both the LTC2941 and LTC2943 measure battery capacity.

The LTC2943 is compatible with the LTC2941, it adds voltage and

temperature monitoring, and uses a slightly different conversion

formula for the charge counter.



Required properties:

- compatible: Should contain "ltc2941" or "ltc2943" which also indicates the

    type of I2C chip attached.

- reg: The 7-bit I2C address.

- lltc,resistor-sense: The sense resistor value in milli-ohms. Can be a 32-bit

    negative value when the battery has been connected to the wrong end of the

    resistor.

- lltc,prescaler-exponent: The prescaler exponent as explained in the datasheet.

    This determines the range and accuracy of the gauge. The value is programmed

    into the chip only if it differs from the current setting. The setting is

    lost when the battery is disconnected.



Example from the Topic Miami Florida board:



	fuelgauge: ltc2943@64 {

		compatible = "ltc2943";

		reg = <0x64>;

		lltc,resistor-sense = <15>;

		lltc,prescaler-exponent = <5>; /* 2^(2*5) = 1024 */

	};

Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt

+8 −5
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Binding for the LTC2952 PowerPath controller



This chip is used to externally trigger a system shut down. Once the trigger has

been sent, the chips' watchdog has to be reset to gracefully shut down.

If the Linux systems decides to shut down it powers off the platform via the

kill signal.

been sent, the chip's watchdog has to be reset to gracefully shut down.

A full powerdown can be triggered via the kill signal.



Required properties:



- compatible:		Must contain: "lltc,ltc2952"

- trigger-gpios:	phandle + gpio-specifier for the GPIO connected to the

			chip's trigger line

- watchdog-gpios:	phandle + gpio-specifier for the GPIO connected to the

			chip's watchdog line

- kill-gpios:		phandle + gpio-specifier for the GPIO connected to the

			chip's kill line



Optional properties:

- trigger-gpios:	phandle + gpio-specifier for the GPIO connected to the

			chip's trigger line. If this property is not set, the

			trigger function is ignored and the chip is kept alive

			until an explicit kill signal is received



Example:



ltc2952 {