From patchwork Sun Apr 23 14:10:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Melissa Wen X-Patchwork-Id: 13221358 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 2C2AEC77B60 for ; Sun, 23 Apr 2023 14:14:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 71B5010E413; Sun, 23 Apr 2023 14:14:01 +0000 (UTC) Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0A69510E40E; Sun, 23 Apr 2023 14:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=P4ZXpKFMtoIv2GHYDm0O+bIMEiRHVdDFlzSdVRRjl+4=; b=Xf5xbFUlVRcMeEfF92pKTWXigX R9y7r3VyMhFpJTzPExO/MEwG3xN9AyhwDWtZ+WGoZe8rbS3sdSGEV77TDsmVhg2icLCNnhOqq/nZq C94uECAkNCXMFTBXeOewYKAf3EFwNxYGTW+54d9UbLXWJkzvXXMvDYEDMY6JWdZI3UuFi1R/PW7yj Tj6FFfM6mOlk6Uz1yKXlU+iE+uuhNX59b6Q9G3mElUuCEDTy67bzM3TKt8//1H7bEjJsGJYcuqvdB rjmy50QlYBUT/bHPct4NQfoVfgJsbb5dW5VB8BZCE7LdtB78DNXJFGVC8sjgEQWkwzlmiQy7qFtJx UHH6t3+A==; Received: from nat-wifi.fi.muni.cz ([147.251.43.9] helo=killbill.fi.muni.cz) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1pqaTO-00ANVs-Pv; Sun, 23 Apr 2023 16:13:50 +0200 From: Melissa Wen To: amd-gfx@lists.freedesktop.org, Harry Wentland , Rodrigo Siqueira , sunpeng.li@amd.com, Alex Deucher , dri-devel@lists.freedesktop.org, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch Subject: [RFC PATCH 34/40] drm/amd/display: add dc_fixpt_from_s3132 helper Date: Sun, 23 Apr 2023 13:10:46 -0100 Message-Id: <20230423141051.702990-35-mwen@igalia.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230423141051.702990-1-mwen@igalia.com> References: <20230423141051.702990-1-mwen@igalia.com> 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: Sebastian Wick , Shashank Sharma , Alex Hung , Xaver Hugl , linux-kernel@vger.kernel.org, Nicholas Kazlauskas , Joshua Ashton , sungjoon.kim@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Joshua Ashton Detach value translation from CTM to reuse it for programming HDR multiplier property. Signed-off-by: Joshua Ashton --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c | 8 +------- drivers/gpu/drm/amd/display/include/fixed31_32.h | 12 ++++++++++++ 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c index 07303c9f3618..d714728ca143 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c @@ -182,7 +182,6 @@ static void __drm_lut_to_dc_gamma(const struct drm_color_lut *lut, static void __drm_ctm_to_dc_matrix(const struct drm_color_ctm *ctm, struct fixed31_32 *matrix) { - int64_t val; int i; /* @@ -201,12 +200,7 @@ static void __drm_ctm_to_dc_matrix(const struct drm_color_ctm *ctm, } /* gamut_remap_matrix[i] = ctm[i - floor(i/4)] */ - val = ctm->matrix[i - (i / 4)]; - /* If negative, convert to 2's complement. */ - if (val & (1ULL << 63)) - val = -(val & ~(1ULL << 63)); - - matrix[i].value = val; + matrix[i] = dc_fixpt_from_s3132(ctm->matrix[i - (i / 4)]); } } diff --git a/drivers/gpu/drm/amd/display/include/fixed31_32.h b/drivers/gpu/drm/amd/display/include/fixed31_32.h index ece97ae0e826..f4cc7f97329f 100644 --- a/drivers/gpu/drm/amd/display/include/fixed31_32.h +++ b/drivers/gpu/drm/amd/display/include/fixed31_32.h @@ -69,6 +69,18 @@ static const struct fixed31_32 dc_fixpt_epsilon = { 1LL }; static const struct fixed31_32 dc_fixpt_half = { 0x80000000LL }; static const struct fixed31_32 dc_fixpt_one = { 0x100000000LL }; +static inline struct fixed31_32 dc_fixpt_from_s3132(__u64 x) +{ + struct fixed31_32 val; + + /* If negative, convert to 2's complement. */ + if (x & (1ULL << 63)) + x = -(x & ~(1ULL << 63)); + + val.value = x; + return val; +} + /* * @brief * Initialization routines