From e62299772106b26c2afecfbb88bead15b799bff3 Mon Sep 17 00:00:00 2001
From: Uma Shankar <uma.shankar@intel.com>
Date: Thu, 24 Mar 2022 17:34:38 +0530
Subject: drm/i915/display: Extend DP HDR support to hsw+
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Git-commit: 7e4e0e5c38493b81cef7e2d6420d85bf783eb73d
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

HSW+ platforms are able to send out HDR Metadata SDP DIP
packet as GMP. Hence, extending the support for HDR on DP
encoders for the same.

v2: Limited to non eDP ports on hsw/bdw and removed it for
lspcon as it is done separately (suggested by Ville)

v3: Added helper and limited eDP restriction to port A (Ville)

v4: Dropped some redundant checks (Ville)

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5389
Cc: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220324120438.1876445-1-uma.shankar@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 6d0491f98f2c..88ac0fceaeb3 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4892,6 +4892,25 @@ bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
 	return intel_bios_is_port_edp(dev_priv, port);
 }
 
+static bool
+has_gamut_metadata_dip(struct drm_i915_private *i915, enum port port)
+{
+	if (intel_bios_is_lspcon_present(i915, port))
+		return false;
+
+	if (DISPLAY_VER(i915) >= 11)
+		return true;
+
+	if (port == PORT_A)
+		return false;
+
+	if (IS_HASWELL(i915) || IS_BROADWELL(i915) ||
+	    DISPLAY_VER(i915) >= 9)
+		return true;
+
+	return false;
+}
+
 static void
 intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector)
 {
@@ -4918,7 +4937,7 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
 		intel_attach_dp_colorspace_property(connector);
 	}
 
-	if (IS_GEMINILAKE(dev_priv) || DISPLAY_VER(dev_priv) >= 11)
+	if (has_gamut_metadata_dip(dev_priv, port))
 		drm_object_attach_property(&connector->base,
 					   connector->dev->mode_config.hdr_output_metadata_property,
 					   0);
-- 
2.38.1