From patchwork Sun May 7 20:28:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ma=C3=ADra_Canal?= X-Patchwork-Id: 13233935 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 4C95AC77B7C for ; Sun, 7 May 2023 20:29:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E0A6710E2FE; Sun, 7 May 2023 20:29:05 +0000 (UTC) Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2E73810E2FE for ; Sun, 7 May 2023 20:29:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Z9mAFSvpOksCY3uRcnpltVB9+hwQmpGbfR5Tlh8ERVE=; b=aDjYBQB0eUuJdTTwJCfh63DPmK LMNkbAyIenCC3JrpkFpx6rVyxxqsCTmm4itbL7QrDmCHd6cpH8J8ISe9IulbiaeextB53nD+ZQ7uq MjGBXFB6VA5MZL9efWD+Q3IKjmyZ16vFHrm+vCIievbLCkQmpv5hEHBPFRcg+8trkNjuznsksFL97 /rlAz4kZCfcK0Yj9abzJmMs8NFfEGa60NWaeuQ32/qpQ5OvO+eFg27G5KQFUpaiTt23pynIF5C36j ZNMtj48JFuq6hqI4DjyJIw3MxZGulja2DkOwvZvhDStyLwAyMR1v2Q4IkD/tkB9PIuQ6u6p03DFK9 mrlllYwA==; Received: from [177.34.168.16] (helo=bowie..) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1pvl03-003N0U-Or; Sun, 07 May 2023 22:28:56 +0200 From: =?utf-8?q?Ma=C3=ADra_Canal?= To: David Airlie , Daniel Vetter , Rodrigo Siqueira , Melissa Wen , Haneen Mohammed , Arthur Grillo Subject: [PATCH v2 1/2] drm: Add fixed-point helper to get rounded integer values Date: Sun, 7 May 2023 17:28:47 -0300 Message-Id: <20230507202848.207608-1-mcanal@igalia.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 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: =?utf-8?q?Ma=C3=ADra_Canal?= , dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Create a new fixed-point helper to allow us to return the rounded value of our fixed-point value. Signed-off-by: Maíra Canal --- v1 -> v2: https://lore.kernel.org/dri-devel/20230425153353.238844-1-mcanal@igalia.com/T/ * New patch * Create the function drm_fixp2int_round() (Melissa Wen). --- include/drm/drm_fixed.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 255645c1f9a8..d695d0411e2d 100644 --- a/include/drm/drm_fixed.h +++ b/include/drm/drm_fixed.h @@ -71,6 +71,7 @@ static inline u32 dfixed_div(fixed20_12 A, fixed20_12 B) } #define DRM_FIXED_POINT 32 +#define DRM_FIXED_POINT_HALF 16 #define DRM_FIXED_ONE (1ULL << DRM_FIXED_POINT) #define DRM_FIXED_DECIMAL_MASK (DRM_FIXED_ONE - 1) #define DRM_FIXED_DIGITS_MASK (~DRM_FIXED_DECIMAL_MASK) @@ -87,6 +88,11 @@ static inline int drm_fixp2int(s64 a) return ((s64)a) >> DRM_FIXED_POINT; } +static inline int drm_fixp2int_round(s64 a) +{ + return ((s64)a + (1 << (DRM_FIXED_POINT_HALF - 1))) >> DRM_FIXED_POINT; +} + static inline int drm_fixp2int_ceil(s64 a) { if (a > 0)