backlight: add backlight type
There may be multiple ways of controlling the backlight on a given
machine. Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index d3a9c6e..18d7bcc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -98,6 +98,7 @@
return 0;
memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_RAW;
props.max_brightness = 31;
bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
&nv40_bl_ops, &props);
@@ -121,6 +122,7 @@
return 0;
memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_RAW;
props.max_brightness = 1025;
bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
&nv50_bl_ops, &props);