drm: add test for AGP devices and driver override for it.

Added device_is_agp callback to drm_driver.  This function is called by the
platform-specific drm_device_is_agp function.  Added implementation of this
function the the Linux-specific portion of the MGA driver to detect PCI G450
cards.  Added code to the Linux-specific portion of the generic DRM layer to
not initialize AGP infrastructure if the card is not AGP (this matches what
already existed in BSD).

Fix up i810/i830 and i915 drivers to always return AGP as they don't always
report the capability.

Fix the MGA to not report AGP for a card that has an AGP chip behind a PCI
bridge.

From: Ian Romanick, Dave Airlie, Alan Hourihane
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/drm/mga_drv.h b/drivers/char/drm/mga_drv.h
index 9412e2816eb7..38f913905e04 100644
--- a/drivers/char/drm/mga_drv.h
+++ b/drivers/char/drm/mga_drv.h
@@ -38,11 +38,11 @@
 
 #define DRIVER_NAME             "mga"
 #define DRIVER_DESC             "Matrox G200/G400"
-#define DRIVER_DATE             "20021029"
+#define DRIVER_DATE             "20051013"
 
 #define DRIVER_MAJOR            3
 #define DRIVER_MINOR            1
-#define DRIVER_PATCHLEVEL       0
+#define DRIVER_PATCHLEVEL       1
 
 typedef struct drm_mga_primary_buffer {
         u8 *start;