diff options
Diffstat (limited to 'include/linux/fb.h')
| -rw-r--r-- | include/linux/fb.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h index 315d89740ddf..f1281687e549 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -1,6 +1,7 @@ #ifndef _LINUX_FB_H #define _LINUX_FB_H +#include <linux/backlight.h> #include <asm/types.h> /* Definitions of frame buffers */ @@ -366,6 +367,12 @@ struct fb_cursor { struct fb_image image; /* Cursor image */ }; +#ifdef CONFIG_FB_BACKLIGHT +/* Settings for the generic backlight code */ +#define FB_BACKLIGHT_LEVELS 128 +#define FB_BACKLIGHT_MAX 0xFF +#endif + #ifdef __KERNEL__ #include <linux/fs.h> @@ -756,6 +763,21 @@ struct fb_info { struct fb_cmap cmap; /* Current cmap */ struct list_head modelist; /* mode list */ struct fb_videomode *mode; /* current mode */ + +#ifdef CONFIG_FB_BACKLIGHT + /* Lock ordering: + * bl_mutex (protects bl_dev and bl_curve) + * bl_dev->sem (backlight class) + */ + struct mutex bl_mutex; + + /* assigned backlight device */ + struct backlight_device *bl_dev; + + /* Backlight level curve */ + u8 bl_curve[FB_BACKLIGHT_LEVELS]; +#endif + struct fb_ops *fbops; struct device *device; struct class_device *class_device; /* sysfs per device attrs */ @@ -895,6 +917,7 @@ extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); extern void framebuffer_release(struct fb_info *info); extern int fb_init_class_device(struct fb_info *fb_info); extern void fb_cleanup_class_device(struct fb_info *head); +extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); /* drivers/video/fbmon.c */ #define FB_MAXTIMINGS 0 |