[Intel-gfx] [PATCH v2 06/21] drm/i915/mtl: Add PCH support

Radhakrishna Sripada
2022-08-18T23:44:54Z

Add support for Meteorpoint(MTP) PCH used with Meteorlake.

Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
---
drivers/gpu/drm/i915/intel_pch.c | 9 ++++++++-
drivers/gpu/drm/i915/intel_pch.h | 4 ++++
2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_pch.c b/drivers/gpu/drm/i915/intel_pch.c
index 0fec25be146a..ba9843cb1b13 100644
--- a/drivers/gpu/drm/i915/intel_pch.c
+++ b/drivers/gpu/drm/i915/intel_pch.c
@@ -138,6 +138,11 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
drm_WARN_ON(&dev_priv->drm, !IS_ALDERLAKE_S(dev_priv) &&
!IS_ALDERLAKE_P(dev_priv));
return PCH_ADP;
+ case INTEL_PCH_MTP_DEVICE_ID_TYPE:
+ case INTEL_PCH_MTP2_DEVICE_ID_TYPE:
+ drm_dbg_kms(&dev_priv->drm, "Found Meteor Lake PCH\n");
+ drm_WARN_ON(&dev_priv->drm, !IS_METEORLAKE(dev_priv));
+ return PCH_MTP;
default:
return PCH_NONE;
}
@@ -166,7 +171,9 @@ intel_virt_detect_pch(const struct drm_i915_private *dev_priv,
* make an educated guess as to which PCH is really there.
*/

- if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv))
+ if (IS_METEORLAKE(dev_priv))
+ id = INTEL_PCH_MTP_DEVICE_ID_TYPE;
+ else if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv))
id = INTEL_PCH_ADP_DEVICE_ID_TYPE;
else if (IS_TIGERLAKE(dev_priv) || IS_ROCKETLAKE(dev_priv))
id = INTEL_PCH_TGP_DEVICE_ID_TYPE;
diff --git a/drivers/gpu/drm/i915/intel_pch.h b/drivers/gpu/drm/i915/intel_pch.h
index 7c8ce9781d1a..32aff5a70d04 100644
--- a/drivers/gpu/drm/i915/intel_pch.h
+++ b/drivers/gpu/drm/i915/intel_pch.h
@@ -25,6 +25,7 @@ enum intel_pch {
PCH_ICP, /* Ice Lake/Jasper Lake PCH */
PCH_TGP, /* Tiger Lake/Mule Creek Canyon PCH */
PCH_ADP, /* Alder Lake PCH */
+ PCH_MTP, /* Meteor Lake PCH */

/* Fake PCHs, functionality handled on the same PCI dev */
PCH_DG1 = 1024,
@@ -57,12 +58,15 @@ enum intel_pch {
#define INTEL_PCH_ADP2_DEVICE_ID_TYPE 0x5180
#define INTEL_PCH_ADP3_DEVICE_ID_TYPE 0x7A00
#define INTEL_PCH_ADP4_DEVICE_ID_TYPE 0x5480
+#define INTEL_PCH_MTP_DEVICE_ID_TYPE 0x7E00
+#define INTEL_PCH_MTP2_DEVICE_ID_TYPE 0xAE00
#define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
#define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
#define INTEL_PCH_QEMU_DEVICE_ID_TYPE 0x2900 /* qemu q35 has 2918 */

#define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
#define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
+#define HAS_PCH_MTP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_MTP)
#define HAS_PCH_DG2(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_DG2)
#define HAS_PCH_ADP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_ADP)
#define HAS_PCH_DG1(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_DG1)
--
2.25.1