From patchwork Tue Jun 13 13:11:57 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kumar, Mahesh" X-Patchwork-Id: 9783801 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EC9C3602DC for ; Tue, 13 Jun 2017 13:08:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DFFCE28557 for ; Tue, 13 Jun 2017 13:08:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D4A612858F; Tue, 13 Jun 2017 13:08:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D8D1628557 for ; Tue, 13 Jun 2017 13:08:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 83F516E2E7; Tue, 13 Jun 2017 13:08:22 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 674B16E2E8 for ; Tue, 13 Jun 2017 13:08:21 +0000 (UTC) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP; 13 Jun 2017 06:08:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.39,338,1493708400"; d="scan'208"; a="1159905937" Received: from unknown (HELO localhost.localdomain) ([10.223.25.241]) by fmsmga001.fm.intel.com with ESMTP; 13 Jun 2017 06:08:19 -0700 From: Mahesh Kumar To: intel-gfx@lists.freedesktop.org Date: Tue, 13 Jun 2017 18:41:57 +0530 Message-Id: <20170613131202.4492-5-mahesh1.kumar@intel.com> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170613131202.4492-1-mahesh1.kumar@intel.com> References: <20170613131202.4492-1-mahesh1.kumar@intel.com> Cc: paulo.r.zanoni@intel.com, maarten.lankhorst@intel.com Subject: [Intel-gfx] [PATCH 4/9] drm/i915: Addition wrapper for fixed16.16 operation X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This patch introduce addition wrapper for fixed point 16.16 operations. Which will be used by later patches to avoid direct member variables access of fixed_16_16_t structure. add_fixed16 : takes 2 fixed_16_16_t variable & returns fixed_16_16_t add_fixed16_u32 : takes fixed_16_16_t & u32 variable & returns fixed_16_16_t Signed-off-by: Mahesh Kumar --- drivers/gpu/drm/i915/i915_drv.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index d0698c290cba..7b95dec9529b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -224,6 +224,25 @@ static inline uint_fixed_16_16_t mul_u32_fixed16(uint32_t val, return clamp_u64_to_fixed16(intermediate_val); } +static inline uint_fixed_16_16_t add_fixed16(uint_fixed_16_16_t add1, + uint_fixed_16_16_t add2) +{ + uint64_t interm_sum; + + interm_sum = (uint64_t) add1.val + add2.val; + return clamp_u64_to_fixed16(interm_sum); +} + +static inline uint_fixed_16_16_t add_fixed16_u32(uint_fixed_16_16_t add1, + uint32_t add2) +{ + uint64_t interm_sum; + uint_fixed_16_16_t interm_add2 = u32_to_fixed16(add2); + + interm_sum = (uint64_t) add1.val + interm_add2.val; + return clamp_u64_to_fixed16(interm_sum); +} + static inline const char *yesno(bool v) { return v ? "yes" : "no";