drm/i915: add LynxPoint-LP PCH ID

[pzanoni: rebase, print it's an LP PCH]

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f85e8b0ec00f..a3d754dba5a9 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -401,6 +401,7 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
 #define INTEL_PCH_CPT_DEVICE_ID_TYPE    0x1c00
 #define INTEL_PCH_PPT_DEVICE_ID_TYPE    0x1e00
 #define INTEL_PCH_LPT_DEVICE_ID_TYPE    0x8c00
+#define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
 
 void intel_detect_pch(struct drm_device *dev)
 {
@@ -440,6 +441,11 @@ void intel_detect_pch(struct drm_device *dev)
                                 dev_priv->num_pch_pll = 0;
                                 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
                                 WARN_ON(!IS_HASWELL(dev));
+                        } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
+                                dev_priv->pch_type = PCH_LPT;
+                                dev_priv->num_pch_pll = 0;
+                                DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
+                                WARN_ON(!IS_HASWELL(dev));
                         }
                         BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS);
                 }