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, 4 insertions, 4 deletions

diff --git a/drivers/video/backlight/cr_bllcd.c b/drivers/video/backlight/cr_bllcd.c
index da86db4374a0..1cce6031bff2 100644
--- a/drivers/video/backlight/cr_bllcd.c
+++ b/drivers/video/backlight/cr_bllcd.c
@@ -170,6 +170,7 @@ static struct lcd_ops cr_lcd_ops = {
 
 static int cr_backlight_probe(struct platform_device *pdev)
 {
+        struct backlight_properties props;
         struct backlight_device *bdp;
         struct lcd_device *ldp;
         struct cr_panel *crp;
@@ -190,8 +191,9 @@ static int cr_backlight_probe(struct platform_device *pdev)
                 return -ENODEV;
         }
 
-        bdp = backlight_device_register("cr-backlight",
-                                        &pdev->dev, NULL, &cr_backlight_ops);
+        memset(&props, 0, sizeof(struct backlight_properties));
+        bdp = backlight_device_register("cr-backlight", &pdev->dev, NULL,
+                                        &cr_backlight_ops, &props);
         if (IS_ERR(bdp)) {
                 pci_dev_put(lpc_dev);
                 return PTR_ERR(bdp);
@@ -220,9 +222,7 @@ static int cr_backlight_probe(struct platform_device *pdev)
         crp->cr_lcd_device = ldp;
         crp->cr_backlight_device->props.power = FB_BLANK_UNBLANK;
         crp->cr_backlight_device->props.brightness = 0;
-        crp->cr_backlight_device->props.max_brightness = 0;
         cr_backlight_set_intensity(crp->cr_backlight_device);
-
         cr_lcd_set_power(crp->cr_lcd_device, FB_BLANK_UNBLANK);
 
         platform_set_drvdata(pdev, crp);