backlight: Allow properties to be passed at registration
Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 9a844ca..3fdf21e 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -1131,18 +1131,20 @@
static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
{
+ struct backlight_properties props;
struct backlight_device *bd;
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = 15;
bd = backlight_device_register(EEEPC_LAPTOP_FILE,
- &eeepc->platform_device->dev,
- eeepc, &eeepcbl_ops);
+ &eeepc->platform_device->dev, eeepc,
+ &eeepcbl_ops, &props);
if (IS_ERR(bd)) {
pr_err("Could not register eeepc backlight device\n");
eeepc->backlight_device = NULL;
return PTR_ERR(bd);
}
eeepc->backlight_device = bd;
- bd->props.max_brightness = 15;
bd->props.brightness = read_brightness(bd);
bd->props.power = FB_BLANK_UNBLANK;
backlight_update_status(bd);