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path: root/linux-core/nouveau_backlight.c
AgeCommit message (Collapse)Author
2009-05-07nouveau: backlight compat fixStuart Bennett
Avoid failure to build on old kernels with CONFIG_BACKLIGHT_CLASS_DEVICE set
2009-02-18nouveau: support backlight only when kernel doesPekka Paalanen
Loading nouveau.ko would fail with unknown symbols, if the backlight class device support is not provided in the kernel. Let's make the backlight support dependant on the kernel configuration. This is a bit ugly, the proper way would be to check for the config in Makefile.kernel whether to build nouveau_backlight.o at all, and if not, nouveau_drv.h should provide the stubs. Signed-off-by: Pekka Paalanen <pq@iki.fi>
2009-02-18nv40, nv50: fix backlight build for <2.6.29 kernelsMatthew Garrett
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Pekka Paalanen <pq@iki.fi>
2009-02-18nouveau: Add in-kernel backlight control supportMatthew Garrett
Several nvidia-based systems don't support backlight control via the standard ACPI control mechanisms. Instead, it's necessary for the driver to modify the backlight control registers directly. This patch adds support for determining whether the registers appear to be in use, and if so registers a kernel backlight device to control them. The backlight can then be controlled via existing userspace tools. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>