Henrique de Moraes Holschuh 0e501834f8 thinkpad-acpi: rework brightness support ... Refactor and redesign the brightness control backend... In order to fix bugzilla #11750... Add a new brightness control mode: support direct NVRAM checkpointing of the backlight level (i.e. store directly to NVRAM without the need for UCMS calls), and use that together with the EC-based control. Disallow UCMS+EC, thus avoiding races with the SMM firmware. Switch the models that define HBRV (EC Brightness Value) in the DSDT to the new mode. These are: T40-T43, R50-R52, R50e, R51e, X31-X41. Change the default for all other IBM ThinkPads to UCMS-only. The Lenovo models already default to UCMS-only. Reported-by: Alexey Fisher <bug-track@fisher-privat.net> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>		2009-04-04 03:14:53 -04:00
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00-INDEX	laptops: move laptop-mode.txt to Documentation/laptops/	2008-03-12 02:37:21 -04:00
acer-wmi.txt	acer-wmi: Remove wireless and bluetooth sysfs entries	2008-10-08 16:56:04 -04:00
disk-shock-protection.txt	ata: Add documentation for hard disk shock protection interface (v3)	2008-10-13 21:39:50 +02:00
laptop-mode.txt	laptops: move laptop-mode.txt to Documentation/laptops/	2008-03-12 02:37:21 -04:00
sony-laptop.txt
sonypi.txt
thinkpad-acpi.txt	thinkpad-acpi: rework brightness support	2009-04-04 03:14:53 -04:00