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>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index e14ce4d469f5..f57bbf170049 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -80,6 +80,7 @@ static const struct backlight_ops bl_ops = {
 static int __devinit tosa_bl_probe(struct i2c_client *client,
                 const struct i2c_device_id *id)
 {
+        struct backlight_properties props;
         struct tosa_bl_data *data = kzalloc(sizeof(struct tosa_bl_data), GFP_KERNEL);
         int ret = 0;
         if (!data)
@@ -99,15 +100,16 @@ static int __devinit tosa_bl_probe(struct i2c_client *client,
         i2c_set_clientdata(client, data);
         data->i2c = client;
 
-        data->bl = backlight_device_register("tosa-bl", &client->dev,
-                        data, &bl_ops);
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.max_brightness = 512 - 1;
+        data->bl = backlight_device_register("tosa-bl", &client->dev, data,
+                                             &bl_ops, &props);
         if (IS_ERR(data->bl)) {
                 ret = PTR_ERR(data->bl);
                 goto err_reg;
         }
 
         data->bl->props.brightness = 69;
-        data->bl->props.max_brightness = 512 - 1;
         data->bl->props.power = FB_BLANK_UNBLANK;
 
         backlight_update_status(data->bl);