From: Hubert Feurstein <h.feurstein@gmail.com>
To: barebox@lists.infradead.org
Cc: Hubert Feurstein <h.feurstein@gmail.com>
Subject: [PATCH 4/4] led: parse panic-indicator from device-tree
Date: Tue, 10 Dec 2019 18:13:04 +0100 [thread overview]
Message-ID: <20191210171305.24276-4-h.feurstein@gmail.com> (raw)
In-Reply-To: <20191210171305.24276-1-h.feurstein@gmail.com>
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
---
Documentation/devicetree/bindings/leds/common.rst | 3 +++
drivers/led/core.c | 11 ++++++++---
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/common.rst b/Documentation/devicetree/bindings/leds/common.rst
index 5a592d67d..911a55f4f 100644
--- a/Documentation/devicetree/bindings/leds/common.rst
+++ b/Documentation/devicetree/bindings/leds/common.rst
@@ -12,3 +12,6 @@ Common leds properties
* ``label``: The label for this LED. If omitted, the label is taken
from the node name (excluding the unit address).
+
+* ``panic-indicator`` - This property specifies that the LED should be used as a
+ panic indicator.
diff --git a/drivers/led/core.c b/drivers/led/core.c
index 4bf19abcc..e727148a2 100644
--- a/drivers/led/core.c
+++ b/drivers/led/core.c
@@ -286,11 +286,16 @@ enum led_trigger trigger_by_name(const char *name)
void led_of_parse_trigger(struct led *led, struct device_node *np)
{
- enum led_trigger trg;
+ enum led_trigger trg = LED_TRIGGER_MAX;
const char *trigger;
- trigger = of_get_property(np, "linux,default-trigger", NULL);
- trg = trigger_by_name(trigger);
+ if (of_property_read_bool(np, "panic-indicator"))
+ trg = LED_TRIGGER_PANIC;
+
+ if (trg == LED_TRIGGER_MAX) {
+ trigger = of_get_property(np, "linux,default-trigger", NULL);
+ trg = trigger_by_name(trigger);
+ }
if (trg == LED_TRIGGER_MAX) {
trigger = of_get_property(np, "barebox,default-trigger", NULL);
--
2.24.0
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next prev parent reply other threads:[~2019-12-10 17:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 17:13 [PATCH 1/4] led: unify led trigger tables Hubert Feurstein
2019-12-10 17:13 ` [PATCH 2/4] led: add documentation for net-tx and net-rx triggers Hubert Feurstein
2019-12-10 17:13 ` [PATCH 3/4] led: check for 'barebox, default-trigger' when 'linux, default-trigger' is not found Hubert Feurstein
2019-12-10 17:13 ` Hubert Feurstein [this message]
2019-12-11 8:39 ` [PATCH 1/4] led: unify led trigger tables Sascha Hauer
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