diff options
| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2007-07-19 04:45:43 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-07-22 05:49:03 +0200 |
| commit | 24d3b77467b6aaf59e38dce4aa86d05541858195 (patch) | |
| tree | 92975c9c2d4b37922d25782bd02d7076d77e817e /lib/idr.c | |
| parent | ACPI: thinkpad-acpi: store ThinkPad model information (diff) | |
| download | linux-24d3b77467b6aaf59e38dce4aa86d05541858195.tar.xz linux-24d3b77467b6aaf59e38dce4aa86d05541858195.zip | |
ACPI: thinkpad-acpi: allow use of CMOS NVRAM for brightness control
It appears that Lenovo decided to break the EC brightness control interface
in a weird way in their latest BIOSes. Fortunately, the old CMOS NVRAM
interface works just fine in such BIOSes.
Add a module parameter that allows the user to select which strategy to use
for brightness control: EC, NVRAM, or both. By default, do both (which is
the way thinkpad-acpi used to work until now) on IBM ThinkPads, and use
NVRAM only on Lenovo ThinkPads.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'lib/idr.c')
0 files changed, 0 insertions, 0 deletions