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author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 17:08:43 -0400 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 17:08:43 -0400 |
commit | d7a4b414eed51f1653bb05ebe84122bf9a7ae18b (patch) | |
tree | bd6603a0c27de4c138a1767871897e9cd3e1a1d2 /Documentation/leds-class.txt | |
parent | 1f0ab40976460bc4673fa204ce917a725185d8f2 (diff) | |
parent | a724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff) |
Merge commit 'linus/master' into tracing/kprobes
Conflicts:
kernel/trace/Makefile
kernel/trace/trace.h
kernel/trace/trace_event_types.h
kernel/trace/trace_export.c
Merge reason:
Sync with latest significant tracing core changes.
Diffstat (limited to 'Documentation/leds-class.txt')
-rw-r--r-- | Documentation/leds-class.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/leds-class.txt b/Documentation/leds-class.txt index 6399557cdab3..8fd5ca2ae32d 100644 --- a/Documentation/leds-class.txt +++ b/Documentation/leds-class.txt | |||
@@ -1,3 +1,4 @@ | |||
1 | |||
1 | LED handling under Linux | 2 | LED handling under Linux |
2 | ======================== | 3 | ======================== |
3 | 4 | ||
@@ -5,10 +6,10 @@ If you're reading this and thinking about keyboard leds, these are | |||
5 | handled by the input subsystem and the led class is *not* needed. | 6 | handled by the input subsystem and the led class is *not* needed. |
6 | 7 | ||
7 | In its simplest form, the LED class just allows control of LEDs from | 8 | In its simplest form, the LED class just allows control of LEDs from |
8 | userspace. LEDs appear in /sys/class/leds/. The brightness file will | 9 | userspace. LEDs appear in /sys/class/leds/. The maximum brightness of the |
9 | set the brightness of the LED (taking a value 0-255). Most LEDs don't | 10 | LED is defined in max_brightness file. The brightness file will set the brightness |
10 | have hardware brightness support so will just be turned on for non-zero | 11 | of the LED (taking a value 0-max_brightness). Most LEDs don't have hardware |
11 | brightness settings. | 12 | brightness support so will just be turned on for non-zero brightness settings. |
12 | 13 | ||
13 | The class also introduces the optional concept of an LED trigger. A trigger | 14 | The class also introduces the optional concept of an LED trigger. A trigger |
14 | is a kernel based source of led events. Triggers can either be simple or | 15 | is a kernel based source of led events. Triggers can either be simple or |