linux-kernel - [RFC PATCH v3 17/18] ledtrig-blkdev: Add initialization function

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Message-Id: <20210819025053.222710-18-arequipeno@gmail.com>
Date:   Wed, 18 Aug 2021 21:50:52 -0500
From:   Ian Pilcher <arequipeno@...il.com>
To:     linux-block@...r.kernel.org, linux-leds@...r.kernel.org
Cc:     axboe@...nel.dk, pavel@....cz, kabel@...nel.org,
        linux-kernel@...r.kernel.org, kernelnewbies@...nelnewbies.org
Subject: [RFC PATCH v3 17/18] ledtrig-blkdev: Add initialization function

Register the block device LED trigger

Initialize interval (convert default value to jiffies)

Signed-off-by: Ian Pilcher <arequipeno@...il.com>
---
 drivers/leds/trigger/ledtrig-blkdev.c | 39 +++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/leds/trigger/ledtrig-blkdev.c b/drivers/leds/trigger/ledtrig-blkdev.c
index 01573c1ad855..f152b00a4f1a 100644
--- a/drivers/leds/trigger/ledtrig-blkdev.c
+++ b/drivers/leds/trigger/ledtrig-blkdev.c
@@ -729,3 +729,42 @@ static void blkdev_deactivate(struct led_classdev *const led_dev)
 
 	mutex_unlock(&ledtrig_blkdev_mutex);
 }
+
+
+/*
+ *
+ *	Initialization - register the trigger
+ *
+ */
+
+static struct attribute *ledtrig_blkdev_attrs[] = {
+	&ledtrig_blkdev_attr_add.attr,
+	&ledtrig_blkdev_attr_del.attr,
+	&ledtrig_blkdev_attr_blink_time.attr,
+	&ledtrig_blkdev_attr_interval.attr,
+	&ledtrig_blkdev_attr_mode.attr,
+	NULL
+};
+
+static const struct attribute_group ledtrig_blkdev_attr_group = {
+	.attrs	= ledtrig_blkdev_attrs,
+};
+
+static const struct attribute_group *ledtrig_blkdev_attr_groups[] = {
+	&ledtrig_blkdev_attr_group,
+	NULL
+};
+
+static struct led_trigger ledtrig_blkdev_trigger = {
+	.name		= "blkdev",
+	.activate	= blkdev_activate,
+	.deactivate	= blkdev_deactivate,
+	.groups		= ledtrig_blkdev_attr_groups,
+};
+
+static int __init blkdev_init(void)
+{
+	ledtrig_blkdev_interval = msecs_to_jiffies(LEDTRIG_BLKDEV_INTERVAL);
+	return led_trigger_register(&ledtrig_blkdev_trigger);
+}
+device_initcall(blkdev_init);
-- 
2.31.1