Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

Pull LED subsystem update from Bryan Wu:
 "Basically this cycle is mostly cleanup for LED subsystem"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: s3c24xx: Remove hardware.h inclusion
  leds: replace list_for_each with list_for_each_entry
  leds: kirkwood: Cleanup in header files
  leds: pwm: Remove a warning on non-DT platforms
  leds: leds-pwm: fix duty time overflow.
  leds: leds-mc13783: Remove unneeded mc13xxx_{un}lock
  leds: leds-mc13783: Remove duplicate field in platform data
  drivers: leds: leds-tca6507: check CONFIG_GPIOLIB whether defined for 'gpio_base'
  leds: lp5523: Support LED MUX configuration on running a pattern
  leds: lp5521/5523: Fix multiple engine usage bug
  LEDS: tca6507 - fix up some comments.
  LEDS: tca6507: add device-tree support for GPIO configuration.
  LEDS: tca6507 - fix bugs in parsing of device-tree configuration.

Documentation/devicetree/bindings/leds/tca6507.txt

@@ -2,6 +2,13 @@ LEDs connected to tca6507
 
 Required properties:
 - compatible : should be : "ti,tca6507".
+- #address-cells: must be 1
+- #size-cells: must be 0
+- reg: typically 0x45.
+
+Optional properties:
+- gpio-controller: allows lines to be used as output-only GPIOs.
+- #gpio-cells: if present, must be 0.
 
 Each led is represented as a sub-node of the ti,tca6507 device.
 
@@ -10,6 +17,7 @@ LED sub-node properties:
 - reg : number of LED line (could be from 0 to 6)
 - linux,default-trigger : (optional)
    see Documentation/devicetree/bindings/leds/common.txt
+- compatible: either "led" (the default) or "gpio".
 
 Examples:
 
@@ -19,6 +27,9 @@ tca6507@45 {
 	#size-cells = <0>;
 	reg = <0x45>;
 
+	gpio-controller;
+	#gpio-cells = <2>;
+
 	led0: red-aux@0 {
 		label = "red:aux";
 		reg = <0x0>;
@@ -29,5 +40,10 @@ tca6507@45 {
 		reg = <0x5>;
 		linux,default-trigger = "default-on";
 	};
+
+	wifi-reset@6 {
+		reg = <0x6>;
+		compatible = "gpio";
+	};
 };
 

Documentation/leds/leds-lp55xx.txt

@@ -73,6 +73,10 @@ select_engine : Select which engine is used for running program
 run_engine    : Start program which is loaded via the firmware interface
 firmware      : Load program data
 
+In case of LP5523, one more command is required, 'enginex_leds'.
+It is used for selecting LED output(s) at each engine number.
+In more details, please refer to 'leds-lp5523.txt'.
+
 For example, run blinking pattern in engine #1 of LP5521
 echo 1 > /sys/bus/i2c/devices/xxxx/select_engine
 echo 1 > /sys/class/firmware/lp5521/loading
@@ -81,10 +85,12 @@ echo 0 > /sys/class/firmware/lp5521/loading
 echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
 
 For example, run blinking pattern in engine #3 of LP55231
+Two LEDs are configured as pattern output channels.
 echo 3 > /sys/bus/i2c/devices/xxxx/select_engine
 echo 1 > /sys/class/firmware/lp55231/loading
 echo "9d0740ff7e0040007e00a0010000" > /sys/class/firmware/lp55231/data
 echo 0 > /sys/class/firmware/lp55231/loading
+echo "000001100" > /sys/bus/i2c/devices/xxxx/engine3_leds
 echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
 
 To start blinking patterns in engine #2 and #3 simultaneously,
@@ -99,17 +105,19 @@ done
 echo 1 > /sys/class/leds/red/device/run_engine
 
 Here is another example for LP5523.
+Full LED strings are selected by 'engine2_leds'.
 echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
 echo 1 > /sys/class/firmware/lp5523/loading
 echo "9d80400004ff05ff437f0000" > /sys/class/firmware/lp5523/data
 echo 0 > /sys/class/firmware/lp5523/loading
+echo "111111111" > /sys/bus/i2c/devices/xxxx/engine2_leds
 echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
 
 As soon as 'loading' is set to 0, registered callback is called.
 Inside the callback, the selected engine is loaded and memory is updated.
 To run programmed pattern, 'run_engine' attribute should be enabled.
 
-The pattern sqeuence of LP8501 is same as LP5523.
+The pattern sqeuence of LP8501 is similar to LP5523.
 However pattern data is specific.
 Ex 1) Engine 1 is used
 echo 1 > /sys/bus/i2c/devices/xxxx/select_engine