i915: Add chipset id for Intel Integrated Graphics Device

This adds new chipset id in drm.
Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/char/drm/drm_pciids.h

@@ -311,4 +311,5 @@
 	{0x8086, 0x29d2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
 	{0x8086, 0x2a02, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
 	{0x8086, 0x2a12, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+	{0x8086, 0x2a42, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
 	{0, 0, 0}

drivers/char/drm/i915_drv.c

@@ -298,7 +298,7 @@ static int i915_suspend(struct drm_device *dev)
 	dev_priv->saveDSPBSIZE = I915_READ(DSPBSIZE);
 	dev_priv->saveDSPBPOS = I915_READ(DSPBPOS);
 	dev_priv->saveDSPBBASE = I915_READ(DSPBBASE);
-	if (IS_I965GM(dev)) {
+	if (IS_I965GM(dev) || IS_IGD_GM(dev)) {
 		dev_priv->saveDSPBSURF = I915_READ(DSPBSURF);
 		dev_priv->saveDSPBTILEOFF = I915_READ(DSPBTILEOFF);
 	}

drivers/char/drm/i915_drv.h

@@ -1084,10 +1084,13 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 		       (dev)->pci_device == 0x2992 || \
 		       (dev)->pci_device == 0x29A2 || \
 		       (dev)->pci_device == 0x2A02 || \
-		       (dev)->pci_device == 0x2A12)
+		       (dev)->pci_device == 0x2A12 || \
+		       (dev)->pci_device == 0x2A42)
 
 #define IS_I965GM(dev) ((dev)->pci_device == 0x2A02)
 
+#define IS_IGD_GM(dev) ((dev)->pci_device == 0x2A42)
+
 #define IS_G33(dev)    ((dev)->pci_device == 0x29C2 ||	\
 			(dev)->pci_device == 0x29B2 ||	\
 			(dev)->pci_device == 0x29D2)
@@ -1096,7 +1099,7 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 		      IS_I945GM(dev) || IS_I965G(dev) || IS_G33(dev))
 
 #define IS_MOBILE(dev) (IS_I830(dev) || IS_I85X(dev) || IS_I915GM(dev) || \
-			IS_I945GM(dev) || IS_I965GM(dev))
+			IS_I945GM(dev) || IS_I965GM(dev) || IS_IGD_GM(dev))
 
 #define PRIMARY_RINGBUFFER_SIZE         (128*1024)