drm/i915/bdw: pretend we have LPT LP on Broadwell

The platforms we currently have all have LPT LP on them. As such, we
have no way to identify the new WPT PCH that will ship with Broadwell.

NOTE: For all purposes relevant to the driver that this point, LPT and
WPT are equivalent. Therefore there should be no need to actually change
this for some time.

v2: Don't assign dev_priv->num_pch_pll any more.

v3: Rebase on top of the PCH detection changes for virtualized
enviroments.

v4: Wrote commit message

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v3)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-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.c b/drivers/gpu/drm/i915/i915_drv.c
index c0ab5d4606920a5aded796096edae060343f6289..a78e7798ec6ba49c88d0b5dc8e72be40e0e5412d 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -453,6 +453,12 @@ void intel_detect_pch(struct drm_device *dev)
                                DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
                                WARN_ON(!IS_HASWELL(dev));
                                WARN_ON(!IS_ULT(dev));
+                       } else if (IS_BROADWELL(dev)) {
+                               dev_priv->pch_type = PCH_LPT;
+                               dev_priv->pch_id =
+                                       INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
+                               DRM_DEBUG_KMS("This is Broadwell, assuming "
+                                             "LynxPoint LP PCH\n");
                        } else {
                                goto check_next;
                        }