leds: gpio: Support the "panic-indicator" firmware property
Calling a GPIO LEDs is quite likely to work even if the kernel has paniced, so they are ideal to blink in this situation. This commit adds support for the new "panic-indicator" firmware property, allowing to mark a given LED to blink on a kernel panic. Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Reviewed-by: Matthias Brugger <mbrugger@suse.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
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committed by
Jacek Anaszewski

parent
e4f4f7091e
commit
80d6737b27
@@ -127,6 +127,8 @@ static int create_gpio_led(const struct gpio_led *template,
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led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
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if (!template->retain_state_suspended)
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led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
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if (template->panic_indicator)
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led_dat->cdev.flags |= LED_PANIC_INDICATOR;
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ret = gpiod_direction_output(led_dat->gpiod, state);
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if (ret < 0)
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@@ -200,6 +202,8 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
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if (fwnode_property_present(child, "retain-state-suspended"))
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led.retain_state_suspended = 1;
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if (fwnode_property_present(child, "panic-indicator"))
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led.panic_indicator = 1;
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ret = create_gpio_led(&led, &priv->leds[priv->num_leds],
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dev, NULL);
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