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, 4 deletions

diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 814312a7452f..54df3d44af8f 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -501,6 +501,7 @@ static irqreturn_t bfin_bf54x_irq_error(int irq, void *dev_id)
 
 static int __devinit bfin_bf54x_probe(struct platform_device *pdev)
 {
+        struct backlight_properties props;
         struct bfin_bf54xfb_info *info;
         struct fb_info *fbinfo;
         int ret;
@@ -645,10 +646,10 @@ static int __devinit bfin_bf54x_probe(struct platform_device *pdev)
                 goto out8;
         }
 #ifndef NO_BL_SUPPORT
-        bl_dev =
-            backlight_device_register("bf54x-bl", NULL, NULL,
-                                      &bfin_lq043fb_bl_ops);
-        bl_dev->props.max_brightness = 255;
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.max_brightness = 255;
+        bl_dev = backlight_device_register("bf54x-bl", NULL, NULL,
+                                           &bfin_lq043fb_bl_ops, &props);
 
         lcd_dev = lcd_device_register(DRIVER_NAME, &pdev->dev, NULL, &bfin_lcd_ops);
         lcd_dev->props.max_contrast = 255, printk(KERN_INFO "Done.\n");