From patchwork Mon Sep 25 19:49:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Melissa Wen X-Patchwork-Id: 13398367 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 22EE6CD54BE for ; Mon, 25 Sep 2023 19:51:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B35D710E312; Mon, 25 Sep 2023 19:50:57 +0000 (UTC) Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by gabe.freedesktop.org (Postfix) with ESMTPS id 624E510E2FC; Mon, 25 Sep 2023 19:50:25 +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=AkqsAukL3w5tYtoK5ST3LBzqQ/vGeUz31JW4XbvRvwg=; b=YOtlxwvvGrN+9VuQuKU1SuNTT2 qF25abY20wUe+GQjlTRdETxLTYn4zNplBsnS3YHePmMqxJedaM/THUHZBFqMho0WZFKh9xzYRszOI yNO+WVQWRIOiH/IzoG8xtEWYwRgPSJfTZhbIie7pFF2RQKyWTFS7n12GbaMkM1miqGhc3aBhdSvln FBiF93LpK1D3p53eVeRRC8UDN5RJ2/Hc0QMuo3nKdwJny2ftEsPjH/9h/lRNmW7OWnAJGIytFYNyF OP5PDLRnhhZgInljmQtGrpL8OGCZCzT96ZZP+ZM2mhv6b0H1bs0pD2IX56dlQ3UCzLeRhU+2NnbHm qwCRD9BQ==; Received: from [102.213.205.115] (helo=killbill.home) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1qkrb5-008GsG-BQ; Mon, 25 Sep 2023 21:50:23 +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 v3 21/32] drm/amd/display: add dc_fixpt_from_s3132 helper Date: Mon, 25 Sep 2023 18:49:21 -0100 Message-Id: <20230925194932.1329483-22-mwen@igalia.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230925194932.1329483-1-mwen@igalia.com> References: <20230925194932.1329483-1-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. Reviewed-by: Harry Wentland 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 fe8fca72efc8..c0b3ccd85a9f 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 @@ -381,7 +381,6 @@ 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; /* @@ -400,12 +399,7 @@ 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 d4cf7ead1d87..84da1dd34efd 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