drm/i915: set IBX pch type explicitly

This is a little less confusing than relying on the implicit zeroing of
the dev_priv.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index dc2c1a294668..8c4fcbb8a4cb 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -255,6 +255,7 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
 #endif
 
 #define INTEL_PCH_DEVICE_ID_MASK        0xff00
+#define INTEL_PCH_IBX_DEVICE_ID_TYPE    0x3b00
 #define INTEL_PCH_CPT_DEVICE_ID_TYPE    0x1c00
 #define INTEL_PCH_PPT_DEVICE_ID_TYPE    0x1e00
 
@@ -275,7 +276,10 @@ void intel_detect_pch (struct drm_device *dev)
                         int id;
                         id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
 
-                        if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
+                        if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
+                                dev_priv->pch_type = PCH_IBX;
+                                DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
+                        } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
                                 dev_priv->pch_type = PCH_CPT;
                                 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
                         } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {