From owner-svn-src-all@FreeBSD.ORG Sun Feb 9 16:38:58 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id BCAAAE0B; Sun, 9 Feb 2014 16:38:58 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 983E812F8; Sun, 9 Feb 2014 16:38:58 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s19GcwWx012056; Sun, 9 Feb 2014 16:38:58 GMT (envelope-from dumbbell@svn.freebsd.org) Received: (from dumbbell@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s19Gcwk4012055; Sun, 9 Feb 2014 16:38:58 GMT (envelope-from dumbbell@svn.freebsd.org) Message-Id: <201402091638.s19Gcwk4012055@svn.freebsd.org> From: Jean-Sebastien Pedron Date: Sun, 9 Feb 2014 16:38:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r261669 - stable/9/sys/dev/drm2 X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Feb 2014 16:38:58 -0000 Author: dumbbell Date: Sun Feb 9 16:38:58 2014 New Revision: 261669 URL: http://svnweb.freebsd.org/changeset/base/261669 Log: MFC r254853: drm: Import drm_fixed.h from Linux 3.8 Added: stable/9/sys/dev/drm2/drm_fixed.h - copied unchanged from r254853, head/sys/dev/drm2/drm_fixed.h Modified: Directory Properties: stable/9/sys/ (props changed) stable/9/sys/dev/ (props changed) Copied: stable/9/sys/dev/drm2/drm_fixed.h (from r254853, head/sys/dev/drm2/drm_fixed.h) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ stable/9/sys/dev/drm2/drm_fixed.h Sun Feb 9 16:38:58 2014 (r261669, copy of r254853, head/sys/dev/drm2/drm_fixed.h) @@ -0,0 +1,72 @@ +/* + * Copyright 2009 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Dave Airlie + */ + +#include +__FBSDID("$FreeBSD$"); + +#ifndef DRM_FIXED_H +#define DRM_FIXED_H + +typedef union dfixed { + u32 full; +} fixed20_12; + + +#define dfixed_const(A) (u32)(((A) << 12))/* + ((B + 0.000122)*4096)) */ +#define dfixed_const_half(A) (u32)(((A) << 12) + 2048) +#define dfixed_const_666(A) (u32)(((A) << 12) + 2731) +#define dfixed_const_8(A) (u32)(((A) << 12) + 3277) +#define dfixed_mul(A, B) ((u64)((u64)(A).full * (B).full + 2048) >> 12) +#define dfixed_init(A) { .full = dfixed_const((A)) } +#define dfixed_init_half(A) { .full = dfixed_const_half((A)) } +#define dfixed_trunc(A) ((A).full >> 12) +#define dfixed_frac(A) ((A).full & ((1 << 12) - 1)) + +static inline u32 dfixed_floor(fixed20_12 A) +{ + u32 non_frac = dfixed_trunc(A); + + return dfixed_const(non_frac); +} + +static inline u32 dfixed_ceil(fixed20_12 A) +{ + u32 non_frac = dfixed_trunc(A); + + if (A.full > dfixed_const(non_frac)) + return dfixed_const(non_frac + 1); + else + return dfixed_const(non_frac); +} + +static inline u32 dfixed_div(fixed20_12 A, fixed20_12 B) +{ + u64 tmp = ((u64)A.full << 13); + + do_div(tmp, B.full); + tmp += 1; + tmp /= 2; + return lower_32_bits(tmp); +} +#endif