mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/leds/trigger/ledtrig-timer.c
..
..
@@ -1,13 +1,10 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * LED Kernel Timer Trigger
3
4
  *
4
5
  * Copyright 2005-2006 Openedhand Ltd.
5
6
  *
6
7
  * Author: Richard Purdie <rpurdie@openedhand.com>
7
- *
8
- * This program is free software; you can redistribute it and/or modify
9
- * it under the terms of the GNU General Public License version 2 as
10
- * published by the Free Software Foundation.
11
8
  */
12
9
 
13
10
 #include <linux/module.h>
..
..
@@ -15,6 +12,7 @@
15
12
 #include <linux/init.h>
16
13
 #include <linux/device.h>
17
14
 #include <linux/ctype.h>
15
+#include <linux/slab.h>
18
16
 #include <linux/leds.h>
19
17
 
20
18
 static ssize_t led_delay_on_show(struct device *dev,
..
..
@@ -30,7 +28,7 @@
30
28
 {
31
29
 	struct led_classdev *led_cdev = led_trigger_get_led(dev);
32
30
 	unsigned long state;
33
-	ssize_t ret = -EINVAL;
31
+	ssize_t ret;
34
32
 
35
33
 	ret = kstrtoul(buf, 10, &state);
36
34
 	if (ret)
..
..
@@ -55,7 +53,7 @@
55
53
 {
56
54
 	struct led_classdev *led_cdev = led_trigger_get_led(dev);
57
55
 	unsigned long state;
58
-	ssize_t ret = -EINVAL;
56
+	ssize_t ret;
59
57
 
60
58
 	ret = kstrtoul(buf, 10, &state);
61
59
 	if (ret)
..
..
@@ -77,8 +75,46 @@
77
75
 };
78
76
 ATTRIBUTE_GROUPS(timer_trig);
79
77
 
78
+static void pattern_init(struct led_classdev *led_cdev)
79
+{
80
+	u32 *pattern;
81
+	unsigned int size = 0;
82
+
83
+	pattern = led_get_default_pattern(led_cdev, &size);
84
+	if (!pattern)
85
+		return;
86
+
87
+	if (size != 2) {
88
+		dev_warn(led_cdev->dev,
89
+			 "Expected 2 but got %u values for delays pattern\n",
90
+			 size);
91
+		goto out;
92
+	}
93
+
94
+	led_cdev->blink_delay_on = pattern[0];
95
+	led_cdev->blink_delay_off = pattern[1];
96
+	/* led_blink_set() called by caller */
97
+
98
+out:
99
+	kfree(pattern);
100
+}
101
+
80
102
 static int timer_trig_activate(struct led_classdev *led_cdev)
81
103
 {
104
+	if (led_cdev->flags & LED_INIT_DEFAULT_TRIGGER) {
105
+		pattern_init(led_cdev);
106
+		/*
107
+		 * Mark as initialized even on pattern_init() error because
108
+		 * any consecutive call to it would produce the same error.
109
+		 */
110
+		led_cdev->flags &= ~LED_INIT_DEFAULT_TRIGGER;
111
+	}
112
+
113
+	/*
114
+	 * If "set brightness to 0" is pending in workqueue, we don't
115
+	 * want that to be reordered after blink_set()
116
+	 */
117
+	flush_work(&led_cdev->set_brightness_work);
82
118
 	led_blink_set(led_cdev, &led_cdev->blink_delay_on,
83
119
 		      &led_cdev->blink_delay_off);
84
120