drm/i915/adl_p: Enable modular fia

Alderlake P have modular FIA like TGL but it is always modular in all
skus, not like TGL that we had to read a register to check if it is
monolithic or modular.

BSpec: 55480
BSpec: 50572
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210514153711.2359617-11-matthew.d.roper@intel.com

drivers/gpu/drm/i915/display/intel_tc.c

@@ -624,6 +624,10 @@ tc_has_modular_fia(struct drm_i915_private *i915, struct intel_digital_port *dig
 	if (!INTEL_INFO(i915)->display.has_modular_fia)
 		return false;
 
+	/* TODO: check if in real HW MODULAR_FIA_MASK is set, if so remove this block */
+	if (IS_ALDERLAKE_P(i915))
+		return true;
+
 	wakeref = tc_cold_block(dig_port);
 	val = intel_uncore_read(&i915->uncore, PORT_TX_DFLEXDPSP(FIA1));
 	tc_cold_unblock(dig_port, wakeref);

drivers/gpu/drm/i915/i915_pci.c

@@ -954,6 +954,7 @@ static const struct intel_device_info adl_p_info = {
 	XE_LPD_FEATURES,
 	PLATFORM(INTEL_ALDERLAKE_P),
 	.require_force_probe = 1,
+	.display.has_modular_fia = 1,
 	.platform_engine_mask =
 		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2),
 	.ppgtt_size = 48,