[PATCH 4/7] drm/i915/gsc: add GSC XeHP SDV platform definition

[Alexander Usyskin <alexander.usyskin@intel.com>]

Define GSC on XeHP SDV (Intel(R) dGPU without display)

XeHP SDV uses the same hardware settings as DG1, but uses polling
instead of interrupts and runs the firmware in slow pace due to
hardware limitations.

Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gsc.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/intel_gsc.c
index 1cbad9248f7c..2d6c871140d8 100644
--- a/drivers/gpu/drm/i915/gt/intel_gsc.c
+++ b/drivers/gpu/drm/i915/gt/intel_gsc.c
@@ -56,6 +56,19 @@ static const struct intel_gsc_def intel_gsc_def_dg1[] = {
 	}
 };
 
+static const struct intel_gsc_def intel_gsc_def_xehpsdv[] = {
+	{
+		/* HECI1 not enabled on the device. */
+	},
+	{
+		.name = "mei-gscfi",
+		.bar = GSC_DG1_HECI2_BASE,
+		.bar_size = GSC_BAR_LENGTH,
+		.use_polling = true,
+		.slow_fw = true,
+	}
+};
+
 static void intel_gsc_release_dev(struct device *dev)
 {
 	struct auxiliary_device *aux_dev = to_auxiliary_dev(dev);
@@ -92,7 +105,14 @@ static void intel_gsc_init_one(struct drm_i915_private *i915,
 	if (intf_id == 0 && !HAS_HECI_PXP(i915))
 		return;
 
-	def = &intel_gsc_def_dg1[intf_id];
+	if (IS_DG1(i915)) {
+		def = &intel_gsc_def_dg1[intf_id];
+	} else if (IS_XEHPSDV(i915)) {
+		def = &intel_gsc_def_xehpsdv[intf_id];
+	} else {
+		drm_warn_once(&i915->drm, "Unknown platform\n");
+		return;
+	}
 
 	if (!def->name) {
 		drm_warn_once(&i915->drm, "HECI%d is not implemented!\n", intf_id + 1);
-- 
2.32.0