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 X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16C24C2BB55 for ; Thu, 16 Apr 2020 15:25:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0950206D6 for ; Thu, 16 Apr 2020 15:25:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="LWOSh6J4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410261AbgDPPZo (ORCPT ); Thu, 16 Apr 2020 11:25:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2504268AbgDPPZI (ORCPT ); Thu, 16 Apr 2020 11:25:08 -0400 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2749AC061A0F for ; Thu, 16 Apr 2020 08:25:08 -0700 (PDT) Received: by mail-wr1-x443.google.com with SMTP id k11so5339322wrp.5 for ; Thu, 16 Apr 2020 08:25:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hlAyBA8CcMUXp85BDwBKC42D/qldDHdyj7qKWzB2WdM=; b=LWOSh6J4oHdRqocw6T+gupl4SfkmDILSRdedkw9pNCBnbVeVMJ3p1vQ1jCXYGKSc9P G0TA75egWRpZcSgxW5QXjT5T6mgsnueYjjSx9mGvHqaYdLtSaspzusSO94UPUN+DouSZ YL8ZnEfEjC2DLNwASGkAg6MFSdsEZDekgema+Db2EoTTBZcR/Nkbp/j9cVxdKpaNpBAA ygQy9iRIzRrLeevaU+aGRWNGMt9BbEtSSS7diKjj3kezmFZRztjSvWPX+/rpsxr2B+Ck xSWSrg8bO2kyHv7vtQ7cLw8FXu+gjR3cfceCa7AzvF08UuE+wX+dbOjizaaXH6DNugSE 4rqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hlAyBA8CcMUXp85BDwBKC42D/qldDHdyj7qKWzB2WdM=; b=EQly8iFpGWAhidDxj0v0cNy0SCN59jZNfocpqDqDlp5k/oQN+etRE+ybx1f3sNloBa R96HqWXcMbRrv8LB7SegKUz9pz9/dYsz5XM9106WaZD+0EOay+8+fsxXxVDxgtbsRzmU KlPNgAM5lJue+3h4nDOxjyvXcCZDffkTwGOyJop16Yq84+783sl+4APJS2/433UTOpyb 8Dxi++gwMEaPNIS91oG7HSeSLmptr7Cwgywd7RE9HRA1PHbWhDRD1ZwbZm1oNTeF/mGO arTp1/+87s/vPspxxASLwnQXY9aAateUzuMixwa2nsoI7fRROacr1CIj6oncd8iBRkKt /oAw== X-Gm-Message-State: AGi0PuYR78uWNnbAMlfMthV4YkywS3/hqYkNvsrF3TbdFRIm5ZvTzrp7 oaVc+9kShz4i0B7yP9CmOs/Xvg== X-Google-Smtp-Source: APiQypLqBg7kl4HJjT8KQzhJlt3fJAI3Rp5CAv4vKPEYnCZ6J+g5WvsII7utk6pPSMtnCGw9RSueSA== X-Received: by 2002:adf:cd84:: with SMTP id q4mr20565789wrj.320.1587050706682; Thu, 16 Apr 2020 08:25:06 -0700 (PDT) Received: from localhost.localdomain ([2a01:e35:2ec0:82b0:39cc:a07:8b48:cc56]) by smtp.gmail.com with ESMTPSA id i17sm18019489wru.39.2020.04.16.08.25.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Apr 2020 08:25:05 -0700 (PDT) From: Neil Armstrong To: daniel@ffwll.ch, dri-devel@lists.freedesktop.org Cc: Neil Armstrong , linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kevin Hilman Subject: [PATCH v5 1/8] drm/fourcc: Add modifier definitions for describing Amlogic Video Framebuffer Compression Date: Thu, 16 Apr 2020 17:24:53 +0200 Message-Id: <20200416152500.29429-2-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200416152500.29429-1-narmstrong@baylibre.com> References: <20200416152500.29429-1-narmstrong@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Amlogic uses a proprietary lossless image compression protocol and format for their hardware video codec accelerators, either video decoders or video input encoders. It considerably reduces memory bandwidth while writing and reading frames in memory. The underlying storage is considered to be 3 components, 8bit or 10-bit per component, YCbCr 420, single plane : - DRM_FORMAT_YUV420_8BIT - DRM_FORMAT_YUV420_10BIT This modifier will be notably added to DMA-BUF frames imported from the V4L2 Amlogic VDEC decoder. This introduces the basic layout composed of: - a body content organized in 64x32 superblocks with 4096 bytes per superblock in default mode. - a 32 bytes per 128x64 header block This layout is tranferrable between Amlogic SoCs supporting this modifier. Tested-by: Kevin Hilman Signed-off-by: Neil Armstrong --- include/uapi/drm/drm_fourcc.h | 39 +++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 8bc0b31597d8..a1b163a5641f 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -309,6 +309,7 @@ extern "C" { #define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07 #define DRM_FORMAT_MOD_VENDOR_ARM 0x08 #define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09 +#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a /* add more to the end as needed */ @@ -804,6 +805,44 @@ extern "C" { */ #define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1) +/* + * Amlogic Video Framebuffer Compression modifiers + * + * Amlogic uses a proprietary lossless image compression protocol and format + * for their hardware video codec accelerators, either video decoders or + * video input encoders. + * + * It considerably reduces memory bandwidth while writing and reading + * frames in memory. + * + * The underlying storage is considered to be 3 components, 8bit or 10-bit + * per component YCbCr 420, single plane : + * - DRM_FORMAT_YUV420_8BIT + * - DRM_FORMAT_YUV420_10BIT + * + * The first 8 bits of the mode defines the layout, then the following 8 bits + * defines the options changing the layout. + * + * Not all combinations are valid, and different SoCs may support different + * combinations of layout and options. + */ +#define DRM_FORMAT_MOD_AMLOGIC_FBC(__modes) fourcc_mod_code(AMLOGIC, __modes) + +/* Amlogic FBC Layouts */ +#define DRM_FORMAT_MOD_AMLOGIC_FBC_LAYOUT_MASK (0xf << 0) + +/* + * Amlogic FBC Basic Layout + * + * The basic layout is composed of: + * - a body content organized in 64x32 superblocks with 4096 bytes per + * superblock in default mode. + * - a 32 bytes per 128x64 header block + * + * This layout is transferrable between Amlogic SoCs supporting this modifier. + */ +#define DRM_FORMAT_MOD_AMLOGIC_FBC_LAYOUT_BASIC (1ULL << 0) + #if defined(__cplusplus) } #endif -- 2.22.0