1 files changed, 46 insertions, 5 deletions

diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c
index d27cd19b7f70..266d0ab92663 100644
--- a/drivers/video/i810/i810_main.c
+++ b/drivers/video/i810/i810_main.c
@@ -46,17 +46,58 @@
 
 #include <asm/io.h>
 #include <asm/div64.h>
-
-#ifdef CONFIG_MTRR
-#include <asm/mtrr.h>
-#endif 
-
 #include <asm/page.h>
 
 #include "i810_regs.h"
 #include "i810.h"
 #include "i810_main.h"
 
+/*
+ * voffset - framebuffer offset in MiB from aperture start address.  In order for
+ * the driver to work with X, we must try to use memory holes left untouched by X. The
+ * following table lists where X's different surfaces start at.
+ *
+ * ---------------------------------------------
+ * :                :  64 MiB     : 32 MiB      :
+ * ----------------------------------------------
+ * : FrontBuffer    :   0         :  0          :
+ * : DepthBuffer    :   48        :  16         :
+ * : BackBuffer     :   56        :  24         :
+ * ----------------------------------------------
+ *
+ * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
+ * 15 + 1 MiB of Framebuffer memory.  For 32 MiB Aperture sizes, a v_offset of 8 MiB should
+ * work, allowing 7 + 1 MiB of Framebuffer memory.
+ * Note, the size of the hole may change depending on how much memory you allocate to X,
+ * and how the memory is split up between these surfaces.
+ *
+ * Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with
+ * DRI disabled.  But if the Frontbuffer is overlapped, X will fail to load.
+ *
+ * Experiment with v_offset to find out which works best for you.
+ */
+static u32 v_offset_default __initdata; /* For 32 MiB Aper size, 8 should be the default */
+static u32 voffset          __initdata = 0;
+
+static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
+static int  __devinit i810fb_init_pci (struct pci_dev *dev,
+                                       const struct pci_device_id *entry);
+static void __exit i810fb_remove_pci(struct pci_dev *dev);
+static int i810fb_resume(struct pci_dev *dev);
+static int i810fb_suspend(struct pci_dev *dev, pm_message_t state);
+
+/* Chipset Specific Functions */
+static int i810fb_set_par    (struct fb_info *info);
+static int i810fb_getcolreg  (u8 regno, u8 *red, u8 *green, u8 *blue,
+                              u8 *transp, struct fb_info *info);
+static int i810fb_setcolreg  (unsigned regno, unsigned red, unsigned green, unsigned blue,
+                              unsigned transp, struct fb_info *info);
+static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
+static int i810fb_blank      (int blank_mode, struct fb_info *info);
+
+/* Initialization */
+static void i810fb_release_resource       (struct fb_info *info, struct i810fb_par *par);
+
 /* PCI */
 static const char *i810_pci_list[] __devinitdata = {
         "Intel(R) 810 Framebuffer Device"                                 ,