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

Pull LED subsystem updates from Bryan Wu:
 "In this cycle, we merged some fix and update for LED Flash class
  driver.  Then the core code of LED Flash class driver is in the kernel
  now.  Moreover, we also got some bug fixes, code cleanup and new
  drivers for LED controllers"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: Don't treat the LED name as a format string
  leds: Use log level warn instead of info when telling about a name clash
  leds/led-class: Handle LEDs with the same name
  leds: lp8860: Fix typo in MODULE_DESCRIPTION in leds-lp8860.c
  leds: lp8501: Fix typo in MODULE_DESCRIPTION in leds-lp8501.c
  DT: leds: Add uniqueness requirement for 'label' property.
  dt-binding: leds: Add common LED DT bindings macros
  leds: add Qualcomm PM8941 WLED driver
  leds: add DT binding for Qualcomm PM8941 WLED block
  leds: pca963x: Add missing initialiation of struct led_info.flags
  leds: flash: Fix the size of sysfs_groups array
  Documentation: leds: Add description of LED Flash class extension
  leds: flash: document sysfs interface
  leds: flash: Remove synchronized flash strobe feature
  leds: Introduce devres helper for led_classdev_register
  leds: lp8860: make use of devm_gpiod_get_optional
  leds: Let the binding document example for leds-gpio follow the gpio bindings
  leds: flash: remove stray include directive
  leds: leds-pwm: drop one pwm_get_period() call

3 files changed, 54 insertions, 7 deletions

diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 34811c57db69..747c53805eec 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -14,8 +14,10 @@ Optional properties for child nodes:
 - led-sources : List of device current outputs the LED is connected to. The
 		outputs are identified by the numbers that must be defined
 		in the LED device binding documentation.
-- label : The label for this LED.  If omitted, the label is
-  taken from the node name (excluding the unit address).
+- label : The label for this LED. If omitted, the label is taken from the node
+	  name (excluding the unit address). It has to uniquely identify
+	  a device, i.e. no other LED class device can be assigned the same
+	  label.
 
 - linux,default-trigger :  This parameter, if present, is a
     string defining the trigger assigned to the LED.  Current triggers are:
diff --git a/Documentation/devicetree/bindings/leds/leds-gpio.txt b/Documentation/devicetree/bindings/leds/leds-gpio.txt
index f77148f372ea..fea1ebfe24a9 100644
--- a/Documentation/devicetree/bindings/leds/leds-gpio.txt
+++ b/Documentation/devicetree/bindings/leds/leds-gpio.txt
@@ -26,16 +26,18 @@ LED sub-node properties:
 
 Examples:
 
+#include <dt-bindings/gpio/gpio.h>
+
 leds {
 	compatible = "gpio-leds";
 	hdd {
 		label = "IDE Activity";
-		gpios = <&mcu_pio 0 1>; /* Active low */
+		gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
 		linux,default-trigger = "ide-disk";
 	};
 
 	fault {
-		gpios = <&mcu_pio 1 0>;
+		gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>;
 		/* Keep LED on if BIOS detected hardware fault */
 		default-state = "keep";
 	};
@@ -44,11 +46,11 @@ leds {
 run-control {
 	compatible = "gpio-leds";
 	red {
-		gpios = <&mpc8572 6 0>;
+		gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>;
 		default-state = "off";
 	};
 	green {
-		gpios = <&mpc8572 7 0>;
+		gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>;
 		default-state = "on";
 	};
 };
@@ -57,7 +59,7 @@ leds {
 	compatible = "gpio-leds";
 
 	charger-led {
-		gpios = <&gpio1 2 0>;
+		gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
 		linux,default-trigger = "max8903-charger-charging";
 		retain-state-suspended;
 	};
diff --git a/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
new file mode 100644
index 000000000000..a85a964d61f5
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt
@@ -0,0 +1,43 @@
+Binding for Qualcomm PM8941 WLED driver
+
+Required properties:
+- compatible: should be "qcom,pm8941-wled"
+- reg: slave address
+
+Optional properties:
+- label: The label for this led
+  See Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger: Default trigger assigned to the LED
+  See Documentation/devicetree/bindings/leds/common.txt
+- qcom,cs-out: bool; enable current sink output
+- qcom,cabc: bool; enable content adaptive backlight control
+- qcom,ext-gen: bool; use externally generated modulator signal to dim
+- qcom,current-limit: mA; per-string current limit; value from 0 to 25
+	default: 20mA
+- qcom,current-boost-limit: mA; boost current limit; one of:
+	105, 385, 525, 805, 980, 1260, 1400, 1680
+	default: 805mA
+- qcom,switching-freq: kHz; switching frequency; one of:
+	600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371,
+	1600, 1920, 2400, 3200, 4800, 9600,
+	default: 1600kHz
+- qcom,ovp: V; Over-voltage protection limit; one of:
+	27, 29, 32, 35
+	default: 29V
+- qcom,num-strings: #; number of led strings attached; value from 1 to 3
+	default: 2
+
+Example:
+
+pm8941-wled@d800 {
+	compatible = "qcom,pm8941-wled";
+	reg = <0xd800>;
+	label = "backlight";
+
+	qcom,cs-out;
+	qcom,current-limit = <20>;
+	qcom,current-boost-limit = <805>;
+	qcom,switching-freq = <1600>;
+	qcom,ovp = <29>;
+	qcom,num-strings = <2>;
+};