------------------
procfs: /proc/acpi/ibm/light
-sysfs attributes: as per led class, for the "tpacpi::thinklight" led
+sysfs attributes: as per LED class, for the "tpacpi::thinklight" LED
procfs notes:
sysfs notes:
-The ThinkLight sysfs interface is documented by the led class
-documentation, in Documentation/leds-class.txt. The ThinkLight led name
+The ThinkLight sysfs interface is documented by the LED class
+documentation, in Documentation/leds-class.txt. The ThinkLight LED name
is "tpacpi::thinklight".
-Due to limitations in the sysfs led class, if the status of the thinklight
+Due to limitations in the sysfs LED class, if the status of the thinklight
cannot be read or if it is unknown, thinkpad-acpi will report it as "off".
It is impossible to know if the status returned through sysfs is valid.
-----------
procfs: /proc/acpi/ibm/led
-sysfs attributes: as per led class, see below for names
+sysfs attributes: as per LED class, see below for names
Some of the LED indicators can be controlled through this feature. On
some older ThinkPad models, it is possible to query the status of the
The available commands are:
- echo '<led number> on' >/proc/acpi/ibm/led
- echo '<led number> off' >/proc/acpi/ibm/led
- echo '<led number> blink' >/proc/acpi/ibm/led
+ echo '<LED number> on' >/proc/acpi/ibm/led
+ echo '<LED number> off' >/proc/acpi/ibm/led
+ echo '<LED number> blink' >/proc/acpi/ibm/led
-The <led number> range is 0 to 7. The set of LEDs that can be
+The <LED number> range is 0 to 7. The set of LEDs that can be
controlled varies from model to model. Here is the common ThinkPad
mapping:
sysfs notes:
-The ThinkPad LED sysfs interface is described in detail by the led class
+The ThinkPad LED sysfs interface is described in detail by the LED class
documentation, in Documentation/leds-class.txt.
The leds are named (in LED ID order, from 0 to 7):
"tpacpi::dock_active", "tpacpi::bay_active", "tpacpi::dock_batt",
"tpacpi::unknown_led", "tpacpi::standby".
-Due to limitations in the sysfs led class, if the status of the LED
+Due to limitations in the sysfs LED class, if the status of the LED
indicators cannot be read due to an error, thinkpad-acpi will report it as
a brightness of zero (same as LED off).