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, 2 deletions

diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index a3a7f8938175..333d28e6b062 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -132,6 +132,7 @@ static const struct backlight_ops omapbl_ops = {
 
 static int omapbl_probe(struct platform_device *pdev)
 {
+        struct backlight_properties props;
         struct backlight_device *dev;
         struct omap_backlight *bl;
         struct omap_backlight_config *pdata = pdev->dev.platform_data;
@@ -143,7 +144,10 @@ static int omapbl_probe(struct platform_device *pdev)
         if (unlikely(!bl))
                 return -ENOMEM;
 
-        dev = backlight_device_register("omap-bl", &pdev->dev, bl, &omapbl_ops);
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.max_brightness = OMAPBL_MAX_INTENSITY;
+        dev = backlight_device_register("omap-bl", &pdev->dev, bl, &omapbl_ops,
+                                        &props);
         if (IS_ERR(dev)) {
                 kfree(bl);
                 return PTR_ERR(dev);
@@ -160,7 +164,6 @@ static int omapbl_probe(struct platform_device *pdev)
         omap_cfg_reg(PWL);      /* Conflicts with UART3 */
 
         dev->props.fb_blank = FB_BLANK_UNBLANK;
-        dev->props.max_brightness = OMAPBL_MAX_INTENSITY;
         dev->props.brightness = pdata->default_intensity;
         omapbl_update_status(dev);