From patchwork Tue May 23 22:15:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Melissa Wen X-Patchwork-Id: 13253082 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 5BFB1C7EE2E for ; Tue, 23 May 2023 22:16:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4672C10E52B; Tue, 23 May 2023 22:16:15 +0000 (UTC) Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id 78AB310E522; Tue, 23 May 2023 22:16:11 +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=eKh03CpgDtI9Ramyo0I6E/Oh2Ho9sob/OTw1JFhirOc=; b=CNvGsPtpfOXIJ17PLMzf5jlcTB mEz7djGVuGug3iw4btVWvesiHG8wiAQ8j2IyvNzh1WpTlfng17Ls84Sgdq6IG4BaUMCPYOn95Z7pH Eey69gcKmsYsjwAV8Cc/o8QEOqR1UDJfJUZvi4JleApsnbavi5CRL8DrqY0tkW9L3byeBYA0xtJsE boVHJ4YW4NDlmnft/jp91uDjwW/rpYzMMtKhi5U84dDxJY4A+eEN1of5+fceUis2+YCSZYobS/GlX rmeL0I5XLbPNW/RRMKrougOlusSKjG9cosdpXDejvSJh++UxsV06XlGC/xa9D0lJyrv0gBhdYmvBh aMVVnKwQ==; Received: from [38.44.72.37] (helo=killbill.home) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1q1aIb-00HEOv-FC; Wed, 24 May 2023 00:16:09 +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: [PATCH 30/36] drm/amd/display: add dc_fixpt_from_s3132 helper Date: Tue, 23 May 2023 21:15:14 -0100 Message-Id: <20230523221520.3115570-31-mwen@igalia.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230523221520.3115570-1-mwen@igalia.com> References: <20230523221520.3115570-1-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 , Pekka Paalanen , Shashank Sharma , Alex Hung , Xaver Hugl , kernel-dev@igalia.com, 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 Signed-off-by: Melissa Wen --- .../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 8452519cabe8..629ba10fbee9 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 @@ -183,7 +183,6 @@ 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; /* @@ -202,12 +201,7 @@ 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