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 7536bee..9db2c96 100644 (file)
--- 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)