aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/thinkpad-acpi.txt
diff options
context:
space:
mode:
authorHenrique de Moraes Holschuh <hmh@hmh.eng.br>2007-07-18 22:45:31 -0400
committerLen Brown <len.brown@intel.com>2007-07-21 23:38:08 -0400
commit74941a69afcc06722685d492784414ec042ab492 (patch)
tree6f97b54fc18db01504cc46dc72d7f28d7d91d5a7 /Documentation/thinkpad-acpi.txt
parent9b010de59cb6dcab7e167dd2a0fa5d3b31447fea (diff)
ACPI: thinkpad-acpi: export to sysfs the state of the radio slider switch
Some ThinkPad models, notably the T60 and X60, have a slider switch to enable and disable the radios. The switch has the capability of force-disabling the radios in hardware on most models, and it is supposed to affect all radios (WLAN, WWAN, BlueTooth). Export the switch state as a sysfs attribute, on ThinkPads where it is available. Thanks to Henning Schild for asking for this feature, and for tracking down the EC register that holds the radio switch state. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Henning Schild <henning@wh9.tu-dresden.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/thinkpad-acpi.txt')
-rw-r--r--Documentation/thinkpad-acpi.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index 142a14fa1d91..fe26e50a2b15 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -227,6 +227,12 @@ sysfs notes:
227 supported hot keys, except those which are handled by 227 supported hot keys, except those which are handled by
228 the firmware. Echo it to hotkey_mask above, to use. 228 the firmware. Echo it to hotkey_mask above, to use.
229 229
230 hotkey_radio_sw:
231 if the ThinkPad has a hardware radio switch, this
232 attribute will read 0 if the switch is in the "radios
233 disabled" postition, and 1 if the switch is in the
234 "radios enabled" position.
235
230 236
231Bluetooth 237Bluetooth
232--------- 238---------