linux-kernel - [PATCH 4.14 046/115] i915: Reject CCS modifiers for pipe C on Geminilake

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Date:   Fri,  2 Mar 2018 09:50:49 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Gabriel Krisman Bertazi <krisman@...labora.co.uk>,
        Ben Widawsky <ben@...dawsk.net>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.14 046/115] i915: Reject CCS modifiers for pipe C on Geminilake

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gabriel Krisman Bertazi <krisman@...labora.co.uk>


[ Upstream commit 8bc0d7ac934b6f2d0dc8f38a3104d281c9db1e98 ]

Current code advertises (on the modifiers blob property) support for CCS
modifier for pipe C on GLK, only to reject it later when validating the
request before the atomic commit.

This fixes the tests igt@..._ccs@...e-c-*, which should skip on GLK for
pipe C (see bug 104096).

A relevant discussion is archived at:

https://lists.freedesktop.org/archives/intel-gfx/2017-December/150646.html

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104096
Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.co.uk>
Cc: Ben Widawsky <ben@...dawsk.net>
Reviewed-by: Ben Widawsky <ben@...dawsk.net>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171220002410.5604-1-krisman@collabora.co.uk
(cherry picked from commit f0cbd8bd877f3d8c5b80a6b1add9ca9010d7f9d8)
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/i915/intel_display.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13240,7 +13240,7 @@ intel_primary_plane_create(struct drm_i9
 	primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
 	primary->check_plane = intel_check_primary_plane;
 
-	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) {
+	if (INTEL_GEN(dev_priv) >= 10) {
 		intel_primary_formats = skl_primary_formats;
 		num_formats = ARRAY_SIZE(skl_primary_formats);
 		modifiers = skl_format_modifiers_ccs;