DG1 has the south engine display on the same PCI device. Ideally we
could use HAS_PCH_SPLIT(), but that macro is misused all across the
code base to rather signify a range of gens. So add a fake one for DG1
to be used where needed.
Cc: Aditya Swarup <aditya.swarup@xxxxxxxxx>
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pch.c | 6 ++++++
drivers/gpu/drm/i915/intel_pch.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pch.c b/drivers/gpu/drm/i915/intel_pch.c
index c668e99eb2e4..6c97192e9ca8 100644
--- a/drivers/gpu/drm/i915/intel_pch.c
+++ b/drivers/gpu/drm/i915/intel_pch.c
@@ -188,6 +188,12 @@ void intel_detect_pch(struct drm_i915_private *dev_priv)
{
struct pci_dev *pch = NULL;
+ /* DG1 has south engine display on the same PCI device */
+ if (IS_DG1(dev_priv)) {
+ dev_priv->pch_type = PCH_DG1;
+ return;
+ }
+
/*
* The reason to probe ISA bridge instead of Dev31:Fun0 is to
* make graphics device passthrough work easy for VMM, that only
diff --git a/drivers/gpu/drm/i915/intel_pch.h b/drivers/gpu/drm/i915/intel_pch.h
index 3053d1ce398b..06d2cd50af0b 100644
--- a/drivers/gpu/drm/i915/intel_pch.h
+++ b/drivers/gpu/drm/i915/intel_pch.h
@@ -26,6 +26,9 @@ enum intel_pch {
PCH_JSP, /* Jasper Lake PCH */
PCH_MCC, /* Mule Creek Canyon PCH */
PCH_TGP, /* Tiger Lake PCH */
+
+ /* Fake PCHs, functionality handled on the same PCI dev */
+ PCH_DG1 = 1024,
};
#define INTEL_PCH_DEVICE_ID_MASK 0xff80
@@ -56,6 +59,7 @@ enum intel_pch {
#define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
#define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
+#define HAS_PCH_DG1(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_DG1)
#define HAS_PCH_JSP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_JSP)
#define HAS_PCH_MCC(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_MCC)
#define HAS_PCH_TGP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_TGP)
--
2.26.2
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