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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/leds/trigger/ledtrig-timer.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/leds/trigger/ledtrig-timer.c')
-rw-r--r--kernel/drivers/leds/trigger/ledtrig-timer.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/kernel/drivers/leds/trigger/ledtrig-timer.c b/kernel/drivers/leds/trigger/ledtrig-timer.c
new file mode 100644
index 000000000..8d09327b5
--- /dev/null
+++ b/kernel/drivers/leds/trigger/ledtrig-timer.c
@@ -0,0 +1,130 @@
+/*
+ * LED Kernel Timer Trigger
+ *
+ * Copyright 2005-2006 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <rpurdie@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/ctype.h>
+#include <linux/leds.h>
+
+static ssize_t led_delay_on_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%lu\n", led_cdev->blink_delay_on);
+}
+
+static ssize_t led_delay_on_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+ unsigned long state;
+ ssize_t ret = -EINVAL;
+
+ ret = kstrtoul(buf, 10, &state);
+ if (ret)
+ return ret;
+
+ led_blink_set(led_cdev, &state, &led_cdev->blink_delay_off);
+ led_cdev->blink_delay_on = state;
+
+ return size;
+}
+
+static ssize_t led_delay_off_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%lu\n", led_cdev->blink_delay_off);
+}
+
+static ssize_t led_delay_off_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
+ unsigned long state;
+ ssize_t ret = -EINVAL;
+
+ ret = kstrtoul(buf, 10, &state);
+ if (ret)
+ return ret;
+
+ led_blink_set(led_cdev, &led_cdev->blink_delay_on, &state);
+ led_cdev->blink_delay_off = state;
+
+ return size;
+}
+
+static DEVICE_ATTR(delay_on, 0644, led_delay_on_show, led_delay_on_store);
+static DEVICE_ATTR(delay_off, 0644, led_delay_off_show, led_delay_off_store);
+
+static void timer_trig_activate(struct led_classdev *led_cdev)
+{
+ int rc;
+
+ led_cdev->trigger_data = NULL;
+
+ rc = device_create_file(led_cdev->dev, &dev_attr_delay_on);
+ if (rc)
+ return;
+ rc = device_create_file(led_cdev->dev, &dev_attr_delay_off);
+ if (rc)
+ goto err_out_delayon;
+
+ led_blink_set(led_cdev, &led_cdev->blink_delay_on,
+ &led_cdev->blink_delay_off);
+ led_cdev->activated = true;
+
+ return;
+
+err_out_delayon:
+ device_remove_file(led_cdev->dev, &dev_attr_delay_on);
+}
+
+static void timer_trig_deactivate(struct led_classdev *led_cdev)
+{
+ if (led_cdev->activated) {
+ device_remove_file(led_cdev->dev, &dev_attr_delay_on);
+ device_remove_file(led_cdev->dev, &dev_attr_delay_off);
+ led_cdev->activated = false;
+ }
+
+ /* Stop blinking */
+ led_set_brightness(led_cdev, LED_OFF);
+}
+
+static struct led_trigger timer_led_trigger = {
+ .name = "timer",
+ .activate = timer_trig_activate,
+ .deactivate = timer_trig_deactivate,
+};
+
+static int __init timer_trig_init(void)
+{
+ return led_trigger_register(&timer_led_trigger);
+}
+
+static void __exit timer_trig_exit(void)
+{
+ led_trigger_unregister(&timer_led_trigger);
+}
+
+module_init(timer_trig_init);
+module_exit(timer_trig_exit);
+
+MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
+MODULE_DESCRIPTION("Timer LED trigger");
+MODULE_LICENSE("GPL");