Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / include / linux / fb.h

diff --git a/include/linux/fb.h b/include/linux/fb.h
index 58c57a3..3b8870e 100644 (file)
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -8,7 +8,6 @@ struct dentry;
 
 /* Definitions of frame buffers                                                */
 
-#define FB_MAJOR               29
 #define FB_MAX                 32      /* sufficient for now */
 
 /* ioctls
@@ -120,6 +119,10 @@ struct dentry;
 #define FB_ACCEL_XGI_VOLARI_V  47      /* XGI Volari V3XT, V5, V8      */
 #define FB_ACCEL_XGI_VOLARI_Z  48      /* XGI Volari Z7                */
 #define FB_ACCEL_OMAP1610      49      /* TI OMAP16xx                  */
+#define FB_ACCEL_TRIDENT_TGUI  50      /* Trident TGUI                 */
+#define FB_ACCEL_TRIDENT_3DIMAGE 51    /* Trident 3DImage              */
+#define FB_ACCEL_TRIDENT_BLADE3D 52    /* Trident Blade3D              */
+#define FB_ACCEL_TRIDENT_BLADEXP 53    /* Trident BladeXP              */
 #define FB_ACCEL_NEOMAGIC_NM2070 90    /* NeoMagic NM2070              */
 #define FB_ACCEL_NEOMAGIC_NM2090 91    /* NeoMagic NM2090              */
 #define FB_ACCEL_NEOMAGIC_NM2093 92    /* NeoMagic NM2093              */
@@ -791,6 +794,17 @@ struct fb_tile_ops {
  */
 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 
+/*
+ * Host and GPU endianness differ.
+ */
+#define FBINFO_FOREIGN_ENDIAN  0x100000
+/*
+ * Big endian math. This is the same flags as above, but with different
+ * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
+ * and host endianness. Drivers should not use this flag.
+ */
+#define FBINFO_BE_MATH  0x100000
+
 struct fb_info {
        int node;
        int flags;
@@ -899,15 +913,11 @@ struct fb_info {
 
 #endif
 
-#if defined (__BIG_ENDIAN)
-#define FB_LEFT_POS(bpp)          (32 - bpp)
-#define FB_SHIFT_HIGH(val, bits)  ((val) >> (bits))
-#define FB_SHIFT_LOW(val, bits)   ((val) << (bits))
-#else
-#define FB_LEFT_POS(bpp)          (0)
-#define FB_SHIFT_HIGH(val, bits)  ((val) << (bits))
-#define FB_SHIFT_LOW(val, bits)   ((val) >> (bits))
-#endif
+#define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
+#define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
+                                                     (val) << (bits))
+#define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
+                                                     (val) >> (bits))
 
     /*
      *  `Generic' versions of the frame buffer device operations
@@ -970,6 +980,25 @@ extern void fb_deferred_io_cleanup(struct fb_info *info);
 extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry,
                                int datasync);
 
+static inline bool fb_be_math(struct fb_info *info)
+{
+#ifdef CONFIG_FB_FOREIGN_ENDIAN
+#if defined(CONFIG_FB_BOTH_ENDIAN)
+       return info->flags & FBINFO_BE_MATH;
+#elif defined(CONFIG_FB_BIG_ENDIAN)
+       return true;
+#elif defined(CONFIG_FB_LITTLE_ENDIAN)
+       return false;
+#endif /* CONFIG_FB_BOTH_ENDIAN */
+#else
+#ifdef __BIG_ENDIAN
+       return true;
+#else
+       return false;
+#endif /* __BIG_ENDIAN */
+#endif /* CONFIG_FB_FOREIGN_ENDIAN */
+}
+
 /* drivers/video/fbsysfs.c */
 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 extern void framebuffer_release(struct fb_info *info);