From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BC947C0218D for ; Sun, 26 Jan 2025 14:54:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6B67010E3C4; Sun, 26 Jan 2025 14:54:47 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="koii+LeH"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id E65F010E3C4; Sun, 26 Jan 2025 14:54:46 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 35B665C5F2F; Sun, 26 Jan 2025 14:54:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC73AC4CED3; Sun, 26 Jan 2025 14:54:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737903286; bh=MWX39xwk5ZlSxuwQypBB/AE78hXBvsKPnp1yLzp60AA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=koii+LeHjkneQvCdRUF2aoGQ7VENfF0TBlGlqW5+oLuSck9qGtBgATeNCtUBNdXcj DSvoOvVY+F2E+HnlkHD3LdSp98pFpJ6aYQvT85HeTcTSVcLQmFKTiX7rxflAXKK+x/ 0+6CV7oP47oOjjaOw0TNTvyhrA8Y5Ze3pu4NeTms184uauy0mI/wxUW9GdDlC8nH05 QciVqx0GqmmFOoVHg047j+aWmaZpVEuzjb8AtIyWg93C9q658iORnoNQ63qDnQnmUy bEWo8213Hw9zgM+Ms9PTj2vBqgGH/ygXoHE8mCAoVSGzuizH0z6RGoDnFtnPj1iTbN vhBS1UAe0iGRw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Gabe Teeger , Nicholas Kazlauskas , Tom Chung , Daniel Wheeler , Alex Deucher , Sasha Levin , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, simona@ffwll.ch, roman.li@amd.com, srinivasan.shanmugam@amd.com, wayne.lin@amd.com, linux@treblig.org, rostrows@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.13 33/34] drm/amd/display: Limit Scaling Ratio on DCN3.01 Date: Sun, 26 Jan 2025 09:53:09 -0500 Message-Id: <20250126145310.926311-33-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250126145310.926311-1-sashal@kernel.org> References: <20250126145310.926311-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.13 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Gabe Teeger [ Upstream commit abc0ad6d08440761b199988c329ad7ac83f41c9b ] [why] Underflow and flickering was occuring due to high scaling ratios when resizing videos. [how] Limit the scaling ratios by increasing the max scaling factor Reviewed-by: Nicholas Kazlauskas Signed-off-by: Gabe Teeger Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../drm/amd/display/dc/resource/dcn301/dcn301_resource.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c index a9816affd312d..0cc8a27be5935 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c @@ -671,9 +671,9 @@ static const struct dc_plane_cap plane_cap = { /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 167, - .nv12 = 167, - .fp16 = 167 + .argb8888 = 358, + .nv12 = 358, + .fp16 = 358 }, 64, 64 @@ -693,7 +693,7 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_dcc = DCC_ENABLE, .vsr_support = true, .performance_trace = false, - .max_downscale_src_width = 7680,/*upto 8K*/ + .max_downscale_src_width = 4096,/*upto true 4k*/ .scl_reset_length10 = true, .sanity_checks = false, .underflow_assert_delay_us = 0xFFFFFFFF, -- 2.39.5