From 5aee2f61d9e7d9be931a629a3f31b16c55616710 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Mon, 24 Jan 2022 21:26:35 +0200
Subject: drm/i915: Simplify intel_dsc_source_support()
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Git-commit: df216b37333cf2ddb0db86b966e86a53d239a013
Patch-mainline: v5.18-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

We can simplify the icl check in intel_dsc_source_support()
by noting that the only case when DSC is not supported is when
using transcoder A.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220124192638.26262-2-ville.syrjala@linux.intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/i915/display/intel_vdsc.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 9b05f93ed8bc..3faea903b9ae 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -341,19 +341,14 @@ bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state)
 	const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
-	enum pipe pipe = crtc->pipe;
 
 	if (!INTEL_INFO(i915)->display.has_dsc)
 		return false;
 
-	/* On TGL, DSC is supported on all Pipes */
 	if (DISPLAY_VER(i915) >= 12)
 		return true;
 
-	if (DISPLAY_VER(i915) >= 11 &&
-	    (pipe != PIPE_A || cpu_transcoder == TRANSCODER_EDP ||
-	     cpu_transcoder == TRANSCODER_DSI_0 ||
-	     cpu_transcoder == TRANSCODER_DSI_1))
+	if (DISPLAY_VER(i915) >= 11 && cpu_transcoder != TRANSCODER_A)
 		return true;
 
 	return false;
-- 
2.38.1