From: Animesh Manna <animesh.manna@intel.com>
Date: Fri, 14 May 2021 15:37:05 +0000 (-0700)
Subject: drm/i915/bigjoiner: Mode validation with uncompressed pipe joiner
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ca844ea7e1c98ad65da71623aee67c807c75eaab;p=linux.git

drm/i915/bigjoiner: Mode validation with uncompressed pipe joiner

No need for checking dsc flag for uncompressed pipe joiner mode
validation.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210514153711.2359617-14-matthew.d.roper@intel.com
---

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 7536bee8bc966..9db2c96c8d42f 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -818,8 +818,11 @@ intel_dp_mode_valid(struct drm_connector *connector,
 		dsc = dsc_max_output_bpp && dsc_slice_count;
 	}
 
-	/* big joiner configuration needs DSC */
-	if (bigjoiner && !dsc)
+	/*
+	 * Big joiner configuration needs DSC for TGL which is not true for
+	 * XE_LPD where uncompressed joiner is supported.
+	 */
+	if (DISPLAY_VER(dev_priv) < 13 && bigjoiner && !dsc)
 		return MODE_CLOCK_HIGH;
 
 	if (mode_rate > max_rate && !dsc)