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/video/backlight/locomolcd.c b/drivers/video/backlight/locomolcd.c
index 00a9591..7571bc2 100644
--- a/drivers/video/backlight/locomolcd.c
+++ b/drivers/video/backlight/locomolcd.c
@@ -167,6 +167,7 @@
static int locomolcd_probe(struct locomo_dev *ldev)
{
+ struct backlight_properties props;
unsigned long flags;
local_irq_save(flags);
@@ -182,13 +183,16 @@
local_irq_restore(flags);
- locomolcd_bl_device = backlight_device_register("locomo-bl", &ldev->dev, NULL, &locomobl_data);
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = 4;
+ locomolcd_bl_device = backlight_device_register("locomo-bl",
+ &ldev->dev, NULL,
+ &locomobl_data, &props);
if (IS_ERR (locomolcd_bl_device))
return PTR_ERR (locomolcd_bl_device);
/* Set up frontlight so that screen is readable */
- locomolcd_bl_device->props.max_brightness = 4,
locomolcd_bl_device->props.brightness = 2;
locomolcd_set_intensity(locomolcd_bl_device);