Merge tag 'for-v3.18' of git://git.infradead.org/battery-2.6

Pull power supply and reset updates from Sebastian Reichel:
 - Initial support for the following chips
   * max77836 (charger)
   * max14577 (charger)
   * bq27742 (battery gauge)
   * ltc2952 (poweroff)
   * stih416 (restart)
   * syscon-reboot (restart)
   * gpio-restart (restart)
 - cleanup of power supply core
 - misc fixes in power supply and reset drivers

* tag 'for-v3.18' of git://git.infradead.org/battery-2.6: (48 commits)
  power: ab8500_fg: Fix build warning
  Documentation: charger: max14577: Update the date of introducing ABI
  power: reset: corrections for simple syscon reboot driver
  Documentation: power: reset: Add documentation for generic SYSCON reboot driver
  power: reset: Add generic SYSCON register mapped reset
  bq27x00_battery: Fix flag reading for bq27742
  power: reset: use restart_notifier mechanism for msm-poweroff
  power: Add simple gpio-restart driver
  power: reset: st: Provide DT bindings for ST's Power Reset driver
  power: reset: Add restart functionality for STiH41x platforms
  power: charger-manager: Fix NULL pointer exception with missing cm-fuel-gauge
  power: max14577: Fix circular config SYSFS dependency
  power: gpio-charger: do not use gpio value directly
  power: max8925: Use of_get_child_by_name
  power: max8925: Fix NULL ptr dereference on memory allocation failure
  bq27x00_battery: Add support to bq27742
  Documentation: charger: max14577: Document exported sysfs entry
  devicetree: mfd: max14577: Add device tree bindings document
  power: max17040: Add ID for MAX77836 Fuel Gauge block
  charger: max14577: Configure battery-dependent settings from DTS and sysfs
  ...

Conflicts:
	drivers/power/reset/Kconfig
	drivers/power/reset/Makefile

1 files changed, 54 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/gpio-restart.txt b/Documentation/devicetree/bindings/gpio/gpio-restart.txt
new file mode 100644
index 000000000000..af3701bc15c4
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-restart.txt
@@ -0,0 +1,54 @@
+Drive a GPIO line that can be used to restart the system from a restart
+handler.
+
+This binding supports level and edge triggered reset.  At driver load
+time, the driver will request the given gpio line and install a restart
+handler. If the optional properties 'open-source' is not found, the GPIO line
+will be driven in the inactive state.  Otherwise its not driven until
+the restart is initiated.
+
+When the system is restarted, the restart handler will be invoked in
+priority order.  The gpio is configured as an output, and driven active,
+triggering a level triggered reset condition. This will also cause an
+inactive->active edge condition, triggering positive edge triggered
+reset. After a delay specified by active-delay, the GPIO is set to
+inactive, thus causing an active->inactive edge, triggering negative edge
+triggered reset. After a delay specified by inactive-delay, the GPIO
+is driven active again.  After a delay specified by wait-delay, the
+restart handler completes allowing other restart handlers to be attempted.
+
+Required properties:
+- compatible : should be "gpio-restart".
+- gpios : The GPIO to set high/low, see "gpios property" in
+  Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
+  low to reset the board set it to "Active Low", otherwise set
+  gpio to "Active High".
+
+Optional properties:
+- open-source : Treat the GPIO as being open source and defer driving
+  it to when the restart is initiated.  If this optional property is not
+  specified, the GPIO is initialized as an output in its inactive state.
+- priority : A priority ranging from 0 to 255 (default 128) according to
+  the following guidelines:
+	0:	Restart handler of last resort, with limited restart
+		capabilities
+	128:	Default restart handler; use if no other restart handler is
+		expected to be available, and/or if restart functionality is
+		sufficient to restart the entire system
+	255:	Highest priority restart handler, will preempt all other
+		restart handlers
+- active-delay: Delay (default 100) to wait after driving gpio active [ms]
+- inactive-delay: Delay (default 100) to wait after driving gpio inactive [ms]
+- wait-delay: Delay (default 3000) to wait after completing restart
+  sequence [ms]
+
+Examples:
+
+gpio-restart {
+	compatible = "gpio-restart";
+	gpios = <&gpio 4 0>;
+	priority = <128>;
+	active-delay = <100>;
+	inactive-delay = <100>;
+	wait-delay = <3000>;
+};