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| author | Robin Gong <b38343@freescale.com> | 2014-01-20 03:41:26 -0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2014-02-27 09:56:56 -0800 |
| commit | 4270a78d23eece0b25a13bff1e71d114ec547de4 (patch) | |
| tree | 95df7c93fbfc6d3e9e2dafc52767c490dc45df93 | |
| parent | 25c6579f872d0542809067d56fad22984b8ff565 (diff) | |
| download | kernel-common-4270a78d23eece0b25a13bff1e71d114ec547de4.tar.gz kernel-common-4270a78d23eece0b25a13bff1e71d114ec547de4.tar.bz2 kernel-common-4270a78d23eece0b25a13bff1e71d114ec547de4.zip | |
leds: leds-gpio: add retain-state-suspended property
Some gpio-leds need retain the state even in suspend, such as charger led.
But this property missed in devicetree, add it.
(cooloney@gmail.com: fold DT binding updates into this patch)
Signed-off-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
| -rw-r--r-- | Documentation/devicetree/bindings/leds/leds-gpio.txt | 12 | ||||
| -rw-r--r-- | drivers/leds/leds-gpio.c | 3 |
2 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-gpio.txt b/Documentation/devicetree/bindings/leds/leds-gpio.txt index df1b3080f6b8..f77148f372ea 100644 --- a/Documentation/devicetree/bindings/leds/leds-gpio.txt +++ b/Documentation/devicetree/bindings/leds/leds-gpio.txt @@ -21,6 +21,8 @@ LED sub-node properties: on). The "keep" setting will keep the LED at whatever its current state is, without producing a glitch. The default is off if this property is not present. +- retain-state-suspended: (optional) The suspend state can be retained.Such + as charge-led gpio. Examples: @@ -50,3 +52,13 @@ run-control { default-state = "on"; }; }; + +leds { + compatible = "gpio-leds"; + + charger-led { + gpios = <&gpio1 2 0>; + linux,default-trigger = "max8903-charger-charging"; + retain-state-suspended; + }; +}; diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 78b0e273a903..1bb3f1ab1d91 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -204,6 +204,9 @@ static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev) led.default_state = LEDS_GPIO_DEFSTATE_OFF; } + if (of_get_property(child, "retain-state-suspended", NULL)) + led.retain_state_suspended = 1; + ret = create_gpio_led(&led, &priv->leds[priv->num_leds++], &pdev->dev, NULL); if (ret < 0) { |