drm/i915: Introduce i915_vgacntrl_reg()
The VGACNTRL register has moved around between different platforms.
To handle the differences add i915_vgacntrl_reg() which returns the
correct offset for the VGACNTRL register.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d327416..984523d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1887,4 +1887,14 @@
#define INTEL_BROADCAST_RGB_FULL 1
#define INTEL_BROADCAST_RGB_LIMITED 2
+static inline uint32_t i915_vgacntrl_reg(struct drm_device *dev)
+{
+ if (HAS_PCH_SPLIT(dev))
+ return CPU_VGACNTRL;
+ else if (IS_VALLEYVIEW(dev))
+ return VLV_VGACNTRL;
+ else
+ return VGACNTRL;
+}
+
#endif