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 <[email protected]>
Cc: Richard Purdie <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: Ben Skeggs <[email protected]>
Cc: Zhang Rui <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Jesse Barnes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Matthew Garrett 2011-03-22 16:30:21 -07:00 • committed by Linus Torvalds
commit bb7ca747f8
59 changed files with 111 additions and 2 deletions

View file

@ -944,6 +944,7 @@ static int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *
}
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_RAW;
props.max_brightness = 0xff;
bdev = backlight_device_register(dev_name(dev), dev, data,
&picolcd_blops, &props);