tree 61f17cfdfa283430531e1b4749e2de93b2b0a812
parent 1c6a334e9c028c2b72c5350650cb14e6d5fdc232
author Henrique de Moraes Holschuh <hmh@hmh.eng.br> 1164376033 -0200
committer Len Brown <len.brown@intel.com> 1165473523 -0500

ACPI: ibm-acpi: fix and extend fan control functions

This patch extend fan control functions, implementing enable/disable for
all write access modes, implementing level control for all level-capable
write access modes.

The patch also updates the documentation, explaining levels auto and
disengaged.

ABI changes:
	1. Support level 0 as an equivalent to disable
	2. Add support for level auto and level disengaged when doing
	   EC 0x2f fan control
	3. Support enable/disable for all level-based write access modes
	4. Add support for level command on FANS thinkpads, as per
	   thinkwiki reports

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>