From patchwork Fri Dec 13 15:58:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrzej Pietrasiewicz X-Patchwork-Id: 11291411 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25FE318B8 for ; Fri, 13 Dec 2019 21:25:00 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 70FBB246BF for ; Fri, 13 Dec 2019 21:24:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 70FBB246BF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4622B6E915; Fri, 13 Dec 2019 15:59:21 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id BEF5A6E929 for ; Fri, 13 Dec 2019 15:59:19 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id D7F66292C5A From: Andrzej Pietrasiewicz To: dri-devel@lists.freedesktop.org Subject: [PATCHv4 02/36] drm/core: Add afbc helper functions Date: Fri, 13 Dec 2019 16:58:33 +0100 Message-Id: <20191213155907.16581-3-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191213155907.16581-1-andrzej.p@collabora.com> References: <20191213155907.16581-1-andrzej.p@collabora.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ayan Halder , kernel@collabora.com, David Airlie , Liviu Dudau , Sandy Huang , Andrzej Pietrasiewicz , James Wang , Mihail Atanassov , Sean Paul MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add checking if a modifier is afbc and getting afbc block size. Signed-off-by: Andrzej Pietrasiewicz --- drivers/gpu/drm/drm_fourcc.c | 53 ++++++++++++++++++++++++++++++++++++ include/drm/drm_fourcc.h | 4 +++ 2 files changed, 57 insertions(+) diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index b234bfaeda06..d14dd7c86020 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -29,6 +29,7 @@ #include #include +#include static char printable_char(int c) { @@ -393,3 +394,55 @@ uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, drm_format_info_block_height(info, plane)); } EXPORT_SYMBOL(drm_format_info_min_pitch); + +/** + * drm_is_afbc - test if the modifier describes an afbc buffer + * @modifier - modifier to be tested + * + * Returns: true if the modifier describes an afbc buffer + */ +bool drm_is_afbc(u64 modifier) +{ + /* is it ARM AFBC? */ + if ((modifier & DRM_FORMAT_MOD_ARM_AFBC(0)) == 0) + return false; + + /* Block size must be known */ + if ((modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) == 0) + return false; + + return true; +} +EXPORT_SYMBOL_GPL(drm_is_afbc); + +/** + * drm_afbc_get_superblock_wh - extract afbc block width/height from modifier + * @modifier: the modifier to be looked at + * @w: address of a place to store the block width + * @h: address of a place to store the block height + * + * Returns: true if the modifier describes a supported block size + */ +bool drm_afbc_get_superblock_wh(u64 modifier, u32 *w, u32 *h) +{ + switch (modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) { + case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16: + *w = 16; + *h = 16; + break; + case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8: + *w = 32; + *h = 8; + break; + case AFBC_FORMAT_MOD_BLOCK_SIZE_64x4: + /* fall through */ + case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4: + /* fall through */ + default: + DRM_DEBUG_KMS("Invalid AFBC_FORMAT_MOD_BLOCK_SIZE: %lld.\n", + modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK); + return false; + } + return true; +} +EXPORT_SYMBOL_GPL(drm_afbc_get_superblock_wh); diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index 306d1efeb5e0..7eb23062bf45 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -320,4 +320,8 @@ uint64_t drm_format_info_min_pitch(const struct drm_format_info *info, int plane, unsigned int buffer_width); const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf); +bool drm_is_afbc(u64 modifier); + +bool drm_afbc_get_superblock_wh(u64 modifier, u32 *w, u32 *h); + #endif /* __DRM_FOURCC_H__ */