[Intel-gfx] [RFC 6/6] drm/i915: Enable 3 display pipes support

[Anshuman Gupta]

Allow 3-display pipes SKU system with any combination
in INTEL_INFO pipe mask.
B.Spec:50075

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 drivers/gpu/drm/i915/intel_device_info.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index fcdacd6d4aa5..459047c98e82 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -997,10 +997,11 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 
 		/*
 		 * At least one pipe should be enabled and if there are
-		 * disabled pipes, they should be the last ones, with no holes
-		 * in the mask.
+		 * disabled pipes, up to Display Gen<=12, they should be the
+		 * last ones, with no holses in the mask.
 		 */
-		if (enabled_mask == 0 || !is_power_of_2(enabled_mask + 1))
+		if (enabled_mask == 0 || (!is_power_of_2(enabled_mask + 1) &&
+		    (INTEL_GEN(dev_priv) <= 11 || IS_TIGERLAKE(dev_priv))))
 			drm_err(&dev_priv->drm,
 				"invalid pipe fuse configuration: enabled_mask=0x%x\n",
 				enabled_mask);
-- 
2.24.0