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/nvidia/nv_backlight.c b/drivers/video/nvidia/nv_backlight.c
index 443e3c8..2fb552a 100644
--- a/drivers/video/nvidia/nv_backlight.c
+++ b/drivers/video/nvidia/nv_backlight.c
@@ -94,6 +94,7 @@
void nvidia_bl_init(struct nvidia_par *par)
{
+ struct backlight_properties props;
struct fb_info *info = pci_get_drvdata(par->pci_dev);
struct backlight_device *bd;
char name[12];
@@ -109,7 +110,10 @@
snprintf(name, sizeof(name), "nvidiabl%d", info->node);
- bd = backlight_device_register(name, info->dev, par, &nvidia_bl_ops);
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
+ bd = backlight_device_register(name, info->dev, par, &nvidia_bl_ops,
+ &props);
if (IS_ERR(bd)) {
info->bl_dev = NULL;
printk(KERN_WARNING "nvidia: Backlight registration failed\n");
@@ -121,7 +125,6 @@
0x158 * FB_BACKLIGHT_MAX / MAX_LEVEL,
0x534 * FB_BACKLIGHT_MAX / MAX_LEVEL);
- bd->props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
bd->props.brightness = bd->props.max_brightness;
bd->props.power = FB_BLANK_UNBLANK;
backlight_update_status(bd);