| commit | d8fee2c2afd08081279af21f5d811f3ad2d46be9 | |
| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | |
| Mon, 8 Oct 2007 00:02:54 +0000 (7 21:02 -0300) | ||
| committer | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | |
| Sun, 7 Oct 2007 21:42:21 +0000 (7 18:42 -0300) | ||
| tree | f057bb56ed18bae8bc05539ed33be7827f5d78d5 | treesnapshot (tar.gz zip) |
| parent | 708581874881198ac9e52a0b9eb6d078a4e51915 | commitdiff |
ACPI: thinkpad-acpi: disable backlight handler if ACPI generic could do it
If we detect the presence of _BCL on a Lenovo ThinkPad, it means there is
support for ACPI standard backlight brightness control. In that case, it
is probably best to not make the ThinkPad-specific backlight interface
available.
Provide a Kconfig option (default disabled) to make the ThinkPad-specific
backlight always available, even if there is generic ACPI backlight
support in the DSDT.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
If we detect the presence of _BCL on a Lenovo ThinkPad, it means there is
support for ACPI standard backlight brightness control. In that case, it
is probably best to not make the ThinkPad-specific backlight interface
available.
Provide a Kconfig option (default disabled) to make the ThinkPad-specific
backlight always available, even if there is generic ACPI backlight
support in the DSDT.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
| Documentation/thinkpad-acpi.txt | diffblobblamehistory | |
| drivers/misc/Kconfig | diffblobblamehistory | |
| drivers/misc/thinkpad_acpi.c | diffblobblamehistory |