path: root/Documentation/laptops
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authorDavid Henningsson <david.henningsson@canonical.com>2013-10-16 23:10:31 +0200
committerTakashi Iwai <tiwai@suse.de>2013-10-17 14:38:44 +0200
commit420f9739a62cdb027f5580d25c813501ff93aa6f (patch)
tree85e0bb1cb001b99c5ac449e92c86e141706588f8 /Documentation/laptops
parent1d198f26c98e6501659d741d530f7b65e4b7aec3 (diff)
thinkpad-acpi: Add mute and mic-mute LED functionality
The LEDs are currently not visible to userspace, for security reasons. They are exported through thinkpad_acpi.h for use by the snd-hda-intel driver. Thanks to Alex Hung <alex.hung@canonical.com> and Takashi Iwai <tiwai@suse.de> for writing parts of this patch. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/laptops')
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 86c52360ffe7..fc04c14de4bb 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
ThinkPad ACPI Extras Driver
- Version 0.24
- December 11th, 2009
+ Version 0.25
+ October 16th, 2013
Borislav Deianov <borislav@users.sf.net>
Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -741,6 +741,9 @@ compiled with the CONFIG_THINKPAD_ACPI_UNSAFE_LEDS option enabled.
Distributions must never enable this option. Individual users that
are aware of the consequences are welcome to enabling it.
+Audio mute and microphone mute LEDs are supported, but currently not
+visible to userspace. They are used by the snd-hda-intel audio driver.
procfs notes:
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