RandR rotation implemented.

* I added the configuration file option "RandRRotation".
* I replaced pSmi->ShadowPitch with pSmi->screenStride, it seems it
   makes more sense because the lower word of ShadowPitch may change
   independently.
* I moved the SMI_DEDataFormat to smi_accel.c because it seems it is
  a piece of code repeated many times in the driver.
* At some places, it is assumed the framebuffer is at FBOffset:
  when using a shadow framebuffer, FBOffset is the location of the
  on-screen framebuffer (0 should be used). This made e.g. EXA
  completly useless with ShadowFB enabled (it crashed).
* In the FBManager initialization, I have replaced xf86InitFBManager
  with xf86InitFBManagerRegion to reserve some additional space as
  screen fb: it's unlikely to be the case, but a less efficient
  alignment in the rotated mode could make the rotated mode need more
  memory than the unrotated one.
  This is not a problem with EXA as the offscreen memory parameters
  can be easily modified when doing the rotation.
* In SMI_RefreshArea it's assumed that some DE registers are already
  in some state, this is specially not true when using EXA.
* SMI_ValidMode rejects a rotated mode with different dimensions
  than the panel. This seems to work now.

Signed-off-by: Paulo Cesar Pereira de Andrade <pcpa@mandriva.com.br>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/smi.h b/src/smi.h
index c785fa0..30ed679 100644
--- a/src/smi.h
+++ b/src/smi.h
@@ -220,7 +220,9 @@ typedef struct
     Bool		shadowFB;	/* Flag if shadow buffer is
 						   used */
     int			rotate;		/* Rotation flags */
-    int			ShadowPitch;	/* Pitch of shadow buffer */
+    Bool                randrRotation;  /* Allow RandR rotation */
+    CARD32              screenStride;   /* Stride of the on-screen framebuffer */
+                                        /* when using a shadow fb*/
     int			ShadowWidthBytes;	/* Width of shadow
 						   buffer in bytes */
     int			ShadowWidth;	/* Width of shadow buffer in
@@ -350,6 +352,7 @@ void SMI_GEReset(ScrnInfoPtr pScrn, int from_timeout, int line, char *file);
 void SMI_EngineReset(ScrnInfoPtr);
 void SMI_SetClippingRectangle(ScrnInfoPtr, int, int, int, int);
 void SMI_DisableClipping(ScrnInfoPtr);
+CARD32 SMI_DEDataFormat(int bpp);
 
 /* smi_hwcurs.c */
 Bool SMI_HWCursorInit(ScreenPtr pScrn);