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authorRichard Purdie <rpurdie@linux.intel.com>2009-01-06 21:00:19 +0000
committerRichard Purdie <rpurdie@linux.intel.com>2009-01-08 15:37:43 +0000
commitc835ee7f4154992e6cf0674d7ee136f5d36247a4 (patch)
treee886aecbf4ce1389ca649a20891315499ff9054d /include/linux/backlight.h
parent9be1df98bca44dbe3769cd22f4ab8122b76c5313 (diff)
backlight: Add suspend/resume support to the backlight core
Add suspend/resume support to the backlight core and enable use of it by appropriate drivers. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'include/linux/backlight.h')
-rw-r--r--include/linux/backlight.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 1ee9488ca2e4..79ca2da81c87 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -31,6 +31,10 @@ struct backlight_device;
struct fb_info;
struct backlight_ops {
+ unsigned int options;
+
+#define BL_CORE_SUSPENDRESUME (1 << 0)
+
/* Notify the backlight driver some property has changed */
int (*update_status)(struct backlight_device *);
/* Return the current backlight brightness (accounting for power,
@@ -51,7 +55,19 @@ struct backlight_properties {
modes; 4: full off), see FB_BLANK_XXX */
int power;
/* FB Blanking active? (values as for power) */
+ /* Due to be removed, please use (state & BL_CORE_FBBLANK) */
int fb_blank;
+ /* Flags used to signal drivers of state changes */
+ /* Upper 4 bits are reserved for driver internal use */
+ unsigned int state;
+
+#define BL_CORE_SUSPENDED (1 << 0) /* backlight is suspended */
+#define BL_CORE_FBBLANK (1 << 1) /* backlight is under an fb blank event */
+#define BL_CORE_DRIVER4 (1 << 28) /* reserved for driver specific use */
+#define BL_CORE_DRIVER3 (1 << 29) /* reserved for driver specific use */
+#define BL_CORE_DRIVER2 (1 << 30) /* reserved for driver specific use */
+#define BL_CORE_DRIVER1 (1 << 31) /* reserved for driver specific use */
+
};
struct backlight_device {