Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem update from Bryan Wu. * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (61 commits) leds: leds-sunfire: use dev_err()/pr_err() instead of printk() leds: 88pm860x: Add missing of_node_put() leds: tca6507: Use of_get_child_count() leds: leds-pwm: make it depend on PWM and not HAVE_PWM Documentation: leds: update LP55xx family devices leds-lp55xx: fix problem on removing LED attributes leds-lp5521/5523: add author and copyright description leds-lp5521/5523: use new lp55xx common header leds-lp55xx: clean up headers leds-lp55xx: clean up definitions leds-lp55xx: clean up unused data and functions leds-lp55xx: clean up _remove() leds-lp55xx: add new function for removing device attribtues leds-lp55xx: code refactoring on selftest function leds-lp55xx: use common device attribute driver function leds-lp55xx: support device specific attributes leds-lp5523: use generic firmware interface leds-lp5521: use generic firmware interface leds-lp55xx: support firmware interface leds-lp55xx: add new lp55xx_register_sysfs() for the firmware interface ...
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48
Documentation/devicetree/bindings/leds/leds-pwm.txt
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48
Documentation/devicetree/bindings/leds/leds-pwm.txt
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LED connected to PWM
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Required properties:
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- compatible : should be "pwm-leds".
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Each LED is represented as a sub-node of the pwm-leds device. Each
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node's name represents the name of the corresponding LED.
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LED sub-node properties:
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- pwms : PWM property to point to the PWM device (phandle)/port (id) and to
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specify the period time to be used: <&phandle id period_ns>;
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- pwm-names : (optional) Name to be used by the PWM subsystem for the PWM device
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For the pwms and pwm-names property please refer to:
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Documentation/devicetree/bindings/pwm/pwm.txt
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- max-brightness : Maximum brightness possible for the LED
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- label : (optional)
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see Documentation/devicetree/bindings/leds/common.txt
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- linux,default-trigger : (optional)
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see Documentation/devicetree/bindings/leds/common.txt
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Example:
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twl_pwm: pwm {
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/* provides two PWMs (id 0, 1 for PWM1 and PWM2) */
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compatible = "ti,twl6030-pwm";
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#pwm-cells = <2>;
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};
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twl_pwmled: pwmled {
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/* provides one PWM (id 0 for Charing indicator LED) */
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compatible = "ti,twl6030-pwmled";
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#pwm-cells = <2>;
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};
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pwmleds {
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compatible = "pwm-leds";
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kpad {
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label = "omap4::keypad";
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pwms = <&twl_pwm 0 7812500>;
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max-brightness = <127>;
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};
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charging {
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label = "omap4:green:chrg";
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pwms = <&twl_pwmled 0 7812500>;
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max-brightness = <255>;
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};
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};
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33
Documentation/devicetree/bindings/leds/tca6507.txt
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33
Documentation/devicetree/bindings/leds/tca6507.txt
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LEDs conected to tca6507
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Required properties:
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- compatible : should be : "ti,tca6507".
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Each led is represented as a sub-node of the ti,tca6507 device.
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LED sub-node properties:
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- label : (optional) see Documentation/devicetree/bindings/leds/common.txt
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- reg : number of LED line (could be from 0 to 6)
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- linux,default-trigger : (optional)
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see Documentation/devicetree/bindings/leds/common.txt
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Examples:
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tca6507@45 {
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compatible = "ti,tca6507";
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0x45>;
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led0: red-aux@0 {
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label = "red:aux";
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reg = <0x0>;
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};
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led1: green-aux@1 {
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label = "green:aux";
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reg = <0x5>;
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linux,default-trigger = "default-on";
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};
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};
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