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ACPI: thinkpad-acpi: do not use named sysfs groups

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The initial version of the thinkpad-acpi sysfs interface (not yet released
in any stable mainline kernel) made liberal use of named sysfs groups, in
order to get the attributes more organized.

This proved to be a really bad design decision.  Maybe if attribute groups
were as flexible as a real directory, and if binary attributes were not
second-class citizens, the idea of subdirs and named groups would not have
been so bad.

This patch makes all the thinkpad-acpi sysfs groups anonymous (thus
removing the subdirs), adds the former group names as a prefix (so that
hotkey/enable becomes hotkey_enable for example), and updates the
documentation.

These changes will make the thinkpad-acpi sysfs ABI a lot easier to
maintain.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh
2007-05-30 20:50:14 -03:00
committed by Len Brown
parent 68ccfaa822
commit cc4c24e115
3 changed files with 18 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
Documentation/thinkpad-acpi.txt
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@@ -138,7 +138,7 @@ Hot keys
--------
procfs: /proc/acpi/ibm/hotkey
sysfs device attribute: hotkey/*
sysfs device attribute: hotkey_*
Without this driver, only the Fn-F4 key (sleep button) generates an
ACPI event. With the driver loaded, the hotkey feature enabled and the
@@ -196,10 +196,7 @@ The following commands can be written to the /proc/acpi/ibm/hotkey file:
sysfs notes:
The hot keys attributes are in a hotkey/ subdirectory off the
thinkpad device.
bios_enabled:
hotkey_bios_enabled:
Returns the status of the hot keys feature when
thinkpad-acpi was loaded. Upon module unload, the hot
key feature status will be restored to this value.
@@ -207,19 +204,19 @@ sysfs notes:
0: hot keys were disabled
1: hot keys were enabled
bios_mask:
hotkey_bios_mask:
Returns the hot keys mask when thinkpad-acpi was loaded.
Upon module unload, the hot keys mask will be restored
to this value.
enable:
hotkey_enable:
Enables/disables the hot keys feature, and reports
current status of the hot keys feature.
0: disables the hot keys feature / feature disabled
1: enables the hot keys feature / feature enabled
mask:
hotkey_mask:
bit mask to enable ACPI event generation for each hot
key (see above). Returns the current status of the hot
keys mask, and allows one to modify it.
@@ -229,7 +226,7 @@ Bluetooth
---------
procfs: /proc/acpi/ibm/bluetooth
sysfs device attribute: bluetooth/enable
sysfs device attribute: bluetooth_enable
This feature shows the presence and current state of a ThinkPad
Bluetooth device in the internal ThinkPad CDC slot.
@@ -244,7 +241,7 @@ If Bluetooth is installed, the following commands can be used:
Sysfs notes:
If the Bluetooth CDC card is installed, it can be enabled /
disabled through the "bluetooth/enable" thinkpad-acpi device
disabled through the "bluetooth_enable" thinkpad-acpi device
attribute, and its current status can also be queried.
enable:
@@ -252,7 +249,7 @@ Sysfs notes:
1: enables Bluetooth / Bluetooth is enabled.
Note: this interface will be probably be superseeded by the
generic rfkill class.
generic rfkill class, so it is NOT to be considered stable yet.
Video output control -- /proc/acpi/ibm/video
--------------------------------------------
@@ -898,7 +895,7 @@ EXPERIMENTAL: WAN
-----------------
procfs: /proc/acpi/ibm/wan
sysfs device attribute: wwan/enable
sysfs device attribute: wwan_enable
This feature is marked EXPERIMENTAL because the implementation
directly accesses hardware registers and may not work as expected. USE
@@ -921,7 +918,7 @@ If the W-WAN card is installed, the following commands can be used:
Sysfs notes:
If the W-WAN card is installed, it can be enabled /
disabled through the "wwan/enable" thinkpad-acpi device
disabled through the "wwan_enable" thinkpad-acpi device
attribute, and its current status can also be queried.
enable:
@@ -929,7 +926,7 @@ Sysfs notes:
1: enables WWAN card / WWAN card is enabled.
Note: this interface will be probably be superseeded by the
generic rfkill class.
generic rfkill class, so it is NOT to be considered stable yet.
Multiple Commands, Module Parameters
------------------------------------