From: Krzysztof Kozlowski <krzk@kernel.org>
To: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Pavel Machek <pavel@ucw.cz>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Baolin Wang <baolin.wang@linaro.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/5] led: triggers: Add LED_INIT_DEFAULT_TRIGGER flag
Date: Mon, 10 Dec 2018 10:29:58 +0100 [thread overview]
Message-ID: <1544434201-14190-3-git-send-email-krzk@kernel.org> (raw)
In-Reply-To: <1544434201-14190-1-git-send-email-krzk@kernel.org>
From: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Add the flag LED_INIT_DEFAULT_TRIGGER for indicating that trigger
being set is a default trigger for the LED class device, and
thus it should be initialized with settings provided in the fwnode.
Set the flag in the led_trigger_set_default(). It is expected to be
cleared in the activate() op of a trigger after trigger fwnode
initialization data is parsed and applied. This should happen only
once after LED class device registration, to allow leaving triggers
in the idle state on re-apply and let the users apply their own
settings without being interfered with the default ones.
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
drivers/leds/led-triggers.c | 2 ++
include/linux/leds.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 52b12e601ebe..9421222ca7a0 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -201,10 +201,12 @@ void led_trigger_set_default(struct led_classdev *led_cdev)
down_write(&led_cdev->trigger_lock);
list_for_each_entry(trig, &trigger_list, next_trig) {
if (!strcmp(led_cdev->default_trigger, trig->name)) {
+ led_cdev->flags |= LED_INIT_DEFAULT_TRIGGER;
led_trigger_set(led_cdev, trig);
break;
}
}
+
up_write(&led_cdev->trigger_lock);
up_read(&triggers_list_lock);
}
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 580cbaef789a..5263f87e1d2c 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -51,6 +51,7 @@ struct led_classdev {
#define LED_PANIC_INDICATOR BIT(20)
#define LED_BRIGHT_HW_CHANGED BIT(21)
#define LED_RETAIN_AT_SHUTDOWN BIT(22)
+#define LED_INIT_DEFAULT_TRIGGER BIT(23)
/* set_brightness_work / blink_timer flags, atomic, private. */
unsigned long work_flags;
--
2.7.4
next prev parent reply other threads:[~2018-12-10 9:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 9:29 [PATCH v2 0/5] leds: trigger: Add pattern initialization from Device Tree Krzysztof Kozlowski
2018-12-10 9:29 ` [PATCH v2 1/5] led: triggers: Break the for loop after default trigger is found Krzysztof Kozlowski
2018-12-10 9:29 ` Krzysztof Kozlowski [this message]
2018-12-10 9:29 ` [PATCH v2 3/5] led: triggers: Initialize LED_INIT_DEFAULT_TRIGGER if trigger is brought after class Krzysztof Kozlowski
2018-12-10 9:30 ` [PATCH v2 4/5] dt-bindings: leds: Add pattern initialization from Device Tree Krzysztof Kozlowski
2018-12-11 17:23 ` Rob Herring
2018-12-12 8:42 ` Krzysztof Kozlowski
2018-12-10 9:30 ` [PATCH v2 5/5] leds: trigger: " Krzysztof Kozlowski
2018-12-10 21:03 ` [PATCH v2 0/5] " Jacek Anaszewski
2018-12-12 12:16 ` Pavel Machek
2018-12-12 19:18 ` Jacek Anaszewski
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