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/video/imxfb.c b/drivers/video/imxfb.c
index 69bd4a5..ef72cb4 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -499,6 +499,7 @@
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 0xff;
+ props.type = BACKLIGHT_RAW;
writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
bl = backlight_device_register("imxfb-bl", &fbi->pdev->dev, fbi,