drm/mgag200: Add support for a new G200eW3 chipset

- Added support for the new deviceID for G200eW3
- Added PLL algorithm for the G200eW3
- Added some initialization code for G200eW3

Signed-off-by: Mathieu Larouche <mathieu.larouche@matrox.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index c99c2cb28939..de06388069e7 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -82,12 +82,19 @@ static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem)
 	int orig;
 	int test1, test2;
 	int orig1, orig2;
+	unsigned int vram_size;
 
 	/* Probe */
 	orig = ioread16(mem);
 	iowrite16(0, mem);
 
-	for (offset = 0x100000; offset < mdev->mc.vram_window; offset += 0x4000) {
+	vram_size = mdev->mc.vram_window;
+
+	if ((mdev->type == G200_EW3) && (vram_size >= 0x1000000)) {
+		vram_size = vram_size - 0x400000;
+	}
+
+	for (offset = 0x100000; offset < vram_size; offset += 0x4000) {
 		orig1 = ioread8(mem + offset);
 		orig2 = ioread8(mem + offset + 0x100);