From patchwork Thu May 4 15:35:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 679644 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75C11C7EE23 for ; Thu, 4 May 2023 15:35:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229681AbjEDPf2 (ORCPT ); Thu, 4 May 2023 11:35:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231329AbjEDPf1 (ORCPT ); Thu, 4 May 2023 11:35:27 -0400 Received: from mail-lf1-x130.google.com (mail-lf1-x130.google.com [IPv6:2a00:1450:4864:20::130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1E1C3C2D for ; Thu, 4 May 2023 08:35:17 -0700 (PDT) Received: by mail-lf1-x130.google.com with SMTP id 2adb3069b0e04-4f00c33c3d6so773105e87.2 for ; Thu, 04 May 2023 08:35:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683214516; x=1685806516; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=BmEGwl1dtwXNhBVAE3u5X5GcBU4ls7eYTmNONq4yQ1A=; b=XcafdqQQxB/7NdRYkWuwJ3a43ur5SttVbnsZ+L1ccxOIhishlCs1Lx7iHKfl2aOJXX 95nBRnoybn05CYK6Ribqp6Po40u0LzqzWM/CFaa5M/DnHVcd/HMqiRYuixTeXtLwYqam claWRAusl3YJ9kje+8+2Hl6wsJ95fjvKEQqYOxGccJQUfQgg2WfC0ScwEp6etYiTS9AH K/b4342dC/hfQuCUqg8j6O/w6LpyW3VA+ChMT+hDiPbXxiQoLHZ5oLocfMkiYd+gn5Tn WwqvCwzHV2wR8gMtMFlb6/qwYJZc8JRI+euVHziYN7JPcc856B3CmepW3UdBhqgKxY8h y8nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683214516; x=1685806516; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=BmEGwl1dtwXNhBVAE3u5X5GcBU4ls7eYTmNONq4yQ1A=; b=cnFqyRFi+y6uYE1ey3nAIG4YZZlwnXl056EUCi6d4N9fpkpEy1xDU6VjPYqV9OmlWL drEfjyKWoc53wTN/DFmd3ZkCPYM5+CVgy1aiNCVx1gCvWUZukt+Y7YP/CM7YoXLRD3Oj y9pay8SSXmGOA7ctJtrnCe0eU/CGaw0GccdMlX7GKaExt9p4/C+zUVRFrqu8W7hTdWX9 KOw9WEQP/QQLmcrJ67Tn2kwOleewlfyOd2eFsvj0s+QZQLV3Kb2c5i5/Ev2BfzN84WAi NEEc++gz5Kh+d3Ti3YKLBroYsjRMaBOfeEgC6yeY6IbHHjra1ZvIC+eaQKSiA/J6Y9qq fuZA== X-Gm-Message-State: AC+VfDwecuL2MA4s7hBx54yfsmqZ62t+WQG+TrZclG5zxJWRGefRd6x9 x4frFKqdnm5w1dUu9dn+KJijrg== X-Google-Smtp-Source: ACHHUZ4yiKI067FxNIrzO0edaaTd3//481JSOsDPT99sn60Az2fLPNqZCrSvkRfkvUSMQ1wq3FRFFQ== X-Received: by 2002:a05:6512:374c:b0:4ec:7b87:931a with SMTP id a12-20020a056512374c00b004ec7b87931amr2435566lfs.13.1683214516251; Thu, 04 May 2023 08:35:16 -0700 (PDT) Received: from eriador.lan (dzdqv0yyyyyyyyyyybcwt-3.rev.dnainternet.fi. [2001:14ba:a0db:1f00::8a5]) by smtp.gmail.com with ESMTPSA id n15-20020a056512388f00b004e96afb1e9asm6608753lft.253.2023.05.04.08.35.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 08:35:15 -0700 (PDT) From: Dmitry Baryshkov To: David Airlie , Daniel Vetter , Jani Nikula , Suraj Kandpal , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten Cc: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Jani Nikula Subject: [PATCH v5 5/8] drm/display/dsc: use flat array for rc_parameters lookup Date: Thu, 4 May 2023 18:35:08 +0300 Message-Id: <20230504153511.4007320-6-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230504153511.4007320-1-dmitry.baryshkov@linaro.org> References: <20230504153511.4007320-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Next commits are going to add support for additional RC parameter lookup tables. These tables are going to use different bpp/bpc combinations, thus it makes little sense to keep the 2d array for RC parameters. Switch to using the flat array. Reviewed-by: Jani Nikula Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_dsc_helper.c | 228 +++++++++++------------ 1 file changed, 108 insertions(+), 120 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dsc_helper.c b/drivers/gpu/drm/display/drm_dsc_helper.c index 122a292bbc8f..acb93d4116e0 100644 --- a/drivers/gpu/drm/display/drm_dsc_helper.c +++ b/drivers/gpu/drm/display/drm_dsc_helper.c @@ -305,24 +305,6 @@ void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg) } EXPORT_SYMBOL(drm_dsc_set_rc_buf_thresh); -enum ROW_INDEX_BPP { - ROW_INDEX_6BPP = 0, - ROW_INDEX_8BPP, - ROW_INDEX_10BPP, - ROW_INDEX_12BPP, - ROW_INDEX_15BPP, - MAX_ROW_INDEX -}; - -enum COLUMN_INDEX_BPC { - COLUMN_INDEX_8BPC = 0, - COLUMN_INDEX_10BPC, - COLUMN_INDEX_12BPC, - COLUMN_INDEX_14BPC, - COLUMN_INDEX_16BPC, - MAX_COLUMN_INDEX -}; - struct rc_parameters { u16 initial_xmit_delay; u8 first_line_bpg_offset; @@ -334,21 +316,31 @@ struct rc_parameters { struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES]; }; +struct rc_parameters_data { + u8 bpp; + u8 bpc; + struct rc_parameters params; +}; + +#define DSC_BPP(bpp) ((bpp) << 4) + /* * Selected Rate Control Related Parameter Recommended Values * from DSC_v1.11 spec & C Model release: DSC_model_20161212 */ -static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { +static const struct rc_parameters_data rc_parameters[] = { { - /* 6BPP/8BPC */ + .bpp = DSC_BPP(6), .bpc = 8, { 768, 15, 6144, 3, 13, 11, 11, { { 0, 4, 0 }, { 1, 6, -2 }, { 3, 8, -2 }, { 4, 8, -4 }, { 5, 9, -6 }, { 5, 9, -6 }, { 6, 9, -6 }, { 6, 10, -8 }, { 7, 11, -8 }, { 8, 12, -10 }, { 9, 12, -10 }, { 10, 12, -12 }, { 10, 12, -12 }, { 11, 12, -12 }, { 13, 14, -12 } } - }, - /* 6BPP/10BPC */ + } + }, + { + .bpp = DSC_BPP(6), .bpc = 10, { 768, 15, 6144, 7, 17, 15, 15, { { 0, 8, 0 }, { 3, 10, -2 }, { 7, 12, -2 }, { 8, 12, -4 }, { 9, 13, -6 }, { 9, 13, -6 }, { 10, 13, -6 }, { 10, 14, -8 }, @@ -356,8 +348,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 14, 16, -12 }, { 14, 16, -12 }, { 15, 16, -12 }, { 17, 18, -12 } } - }, - /* 6BPP/12BPC */ + } + }, + { + .bpp = DSC_BPP(6), .bpc = 12, { 768, 15, 6144, 11, 21, 19, 19, { { 0, 12, 0 }, { 5, 14, -2 }, { 11, 16, -2 }, { 12, 16, -4 }, { 13, 17, -6 }, { 13, 17, -6 }, { 14, 17, -6 }, { 14, 18, -8 }, @@ -365,8 +359,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 18, 20, -12 }, { 18, 20, -12 }, { 19, 20, -12 }, { 21, 22, -12 } } - }, - /* 6BPP/14BPC */ + } + }, + { + .bpp = DSC_BPP(6), .bpc = 14, { 768, 15, 6144, 15, 25, 23, 23, { { 0, 16, 0 }, { 7, 18, -2 }, { 15, 20, -2 }, { 16, 20, -4 }, { 17, 21, -6 }, { 17, 21, -6 }, { 18, 21, -6 }, { 18, 22, -8 }, @@ -374,8 +370,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 22, 24, -12 }, { 22, 24, -12 }, { 23, 24, -12 }, { 25, 26, -12 } } - }, - /* 6BPP/16BPC */ + } + }, + { + .bpp = DSC_BPP(6), .bpc = 16, { 768, 15, 6144, 19, 29, 27, 27, { { 0, 20, 0 }, { 9, 22, -2 }, { 19, 24, -2 }, { 20, 24, -4 }, { 21, 25, -6 }, { 21, 25, -6 }, { 22, 25, -6 }, { 22, 26, -8 }, @@ -383,18 +381,20 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 26, 28, -12 }, { 26, 28, -12 }, { 27, 28, -12 }, { 29, 30, -12 } } - }, + } }, { - /* 8BPP/8BPC */ + .bpp = DSC_BPP(8), .bpc = 8, { 512, 12, 6144, 3, 12, 11, 11, { { 0, 4, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } } - }, - /* 8BPP/10BPC */ + } + }, + { + .bpp = DSC_BPP(8), .bpc = 10, { 512, 12, 6144, 7, 16, 15, 15, { /* * DSC model/pre-SCR-cfg has 8 for range_max_qp[0], however @@ -405,8 +405,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } } - }, - /* 8BPP/12BPC */ + } + }, + { + .bpp = DSC_BPP(8), .bpc = 12, { 512, 12, 6144, 11, 20, 19, 19, { { 0, 12, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 9, 14, -2 }, { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, @@ -414,8 +416,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, { 21, 23, -12 } } - }, - /* 8BPP/14BPC */ + } + }, + { + .bpp = DSC_BPP(8), .bpc = 14, { 512, 12, 6144, 15, 24, 23, 23, { { 0, 12, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 12, 17, -2 }, { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, @@ -423,8 +427,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 17, 23, -12 }, { 17, 23, -12 }, { 21, 24, -12 }, { 24, 25, -12 } } - }, - /* 8BPP/16BPC */ + } + }, + { + .bpp = DSC_BPP(8), .bpc = 16, { 512, 12, 6144, 19, 28, 27, 27, { { 0, 12, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 15, 20, -2 }, { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, @@ -432,26 +438,30 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 21, 27, -12 }, { 21, 27, -12 }, { 25, 28, -12 }, { 28, 29, -12 } } - }, + } }, { - /* 10BPP/8BPC */ + .bpp = DSC_BPP(10), .bpc = 8, { 410, 15, 5632, 3, 12, 11, 11, { { 0, 3, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 2, 6, -2 }, { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, { 3, 9, -8 }, { 3, 9, -10 }, { 5, 10, -10 }, { 5, 10, -10 }, { 5, 11, -12 }, { 7, 11, -12 }, { 11, 12, -12 } } - }, - /* 10BPP/10BPC */ + } + }, + { + .bpp = DSC_BPP(10), .bpc = 10, { 410, 15, 5632, 7, 16, 15, 15, { { 0, 7, 2 }, { 4, 8, 0 }, { 5, 9, 0 }, { 6, 10, -2 }, { 7, 11, -4 }, { 7, 11, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, { 7, 13, -8 }, { 7, 13, -10 }, { 9, 14, -10 }, { 9, 14, -10 }, { 9, 15, -12 }, { 11, 15, -12 }, { 15, 16, -12 } } - }, - /* 10BPP/12BPC */ + } + }, + { + .bpp = DSC_BPP(10), .bpc = 12, { 410, 15, 5632, 11, 20, 19, 19, { { 0, 11, 2 }, { 4, 12, 0 }, { 9, 13, 0 }, { 10, 14, -2 }, { 11, 15, -4 }, { 11, 15, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, @@ -459,8 +469,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 13, 18, -10 }, { 13, 19, -12 }, { 15, 19, -12 }, { 19, 20, -12 } } - }, - /* 10BPP/14BPC */ + } + }, + { + .bpp = DSC_BPP(10), .bpc = 14, { 410, 15, 5632, 15, 24, 23, 23, { { 0, 11, 2 }, { 5, 13, 0 }, { 11, 15, 0 }, { 13, 18, -2 }, { 15, 19, -4 }, { 15, 19, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, @@ -468,8 +480,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 17, 22, -10 }, { 17, 23, -12 }, { 19, 23, -12 }, { 23, 24, -12 } } - }, - /* 10BPP/16BPC */ + } + }, + { + .bpp = DSC_BPP(10), .bpc = 16, { 410, 15, 5632, 19, 28, 27, 27, { { 0, 11, 2 }, { 6, 14, 0 }, { 13, 17, 0 }, { 16, 20, -2 }, { 19, 23, -4 }, { 19, 23, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, @@ -477,26 +491,30 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 21, 26, -10 }, { 21, 27, -12 }, { 23, 27, -12 }, { 27, 28, -12 } } - }, + } }, { - /* 12BPP/8BPC */ + .bpp = DSC_BPP(12), .bpc = 8, { 341, 15, 2048, 3, 12, 11, 11, { { 0, 2, 2 }, { 0, 4, 0 }, { 1, 5, 0 }, { 1, 6, -2 }, { 3, 7, -4 }, { 3, 7, -6 }, { 3, 7, -8 }, { 3, 8, -8 }, { 3, 9, -8 }, { 3, 10, -10 }, { 5, 11, -10 }, { 5, 12, -12 }, { 5, 13, -12 }, { 7, 13, -12 }, { 13, 15, -12 } } - }, - /* 12BPP/10BPC */ + } + }, + { + .bpp = DSC_BPP(12), .bpc = 10, { 341, 15, 2048, 7, 16, 15, 15, { { 0, 2, 2 }, { 2, 5, 0 }, { 3, 7, 0 }, { 4, 8, -2 }, { 6, 9, -4 }, { 7, 10, -6 }, { 7, 11, -8 }, { 7, 12, -8 }, { 7, 13, -8 }, { 7, 14, -10 }, { 9, 15, -10 }, { 9, 16, -12 }, { 9, 17, -12 }, { 11, 17, -12 }, { 17, 19, -12 } } - }, - /* 12BPP/12BPC */ + } + }, + { + .bpp = DSC_BPP(12), .bpc = 12, { 341, 15, 2048, 11, 20, 19, 19, { { 0, 6, 2 }, { 4, 9, 0 }, { 7, 11, 0 }, { 8, 12, -2 }, { 10, 13, -4 }, { 11, 14, -6 }, { 11, 15, -8 }, { 11, 16, -8 }, @@ -504,8 +522,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 13, 20, -12 }, { 13, 21, -12 }, { 15, 21, -12 }, { 21, 23, -12 } } - }, - /* 12BPP/14BPC */ + } + }, + { + .bpp = DSC_BPP(12), .bpc = 14, { 341, 15, 2048, 15, 24, 23, 23, { { 0, 6, 2 }, { 7, 10, 0 }, { 9, 13, 0 }, { 11, 16, -2 }, { 14, 17, -4 }, { 15, 18, -6 }, { 15, 19, -8 }, { 15, 20, -8 }, @@ -513,8 +533,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 17, 21, -12 }, { 17, 21, -12 }, { 19, 22, -12 }, { 22, 23, -12 } } - }, - /* 12BPP/16BPC */ + } + }, + { + .bpp = DSC_BPP(12), .bpc = 16, { 341, 15, 2048, 19, 28, 27, 27, { { 0, 6, 2 }, { 6, 11, 0 }, { 11, 15, 0 }, { 14, 18, -2 }, { 18, 21, -4 }, { 19, 22, -6 }, { 19, 23, -8 }, { 19, 24, -8 }, @@ -522,26 +544,30 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 21, 25, -12 }, { 21, 25, -12 }, { 23, 26, -12 }, { 26, 27, -12 } } - }, + } }, { - /* 15BPP/8BPC */ + .bpp = DSC_BPP(15), .bpc = 8, { 273, 15, 2048, 3, 12, 11, 11, { { 0, 0, 10 }, { 0, 1, 8 }, { 0, 1, 6 }, { 0, 2, 4 }, { 1, 2, 2 }, { 1, 3, 0 }, { 1, 3, -2 }, { 2, 4, -4 }, { 2, 5, -6 }, { 3, 5, -8 }, { 4, 6, -10 }, { 4, 7, -10 }, { 5, 7, -12 }, { 7, 8, -12 }, { 8, 9, -12 } } - }, - /* 15BPP/10BPC */ + } + }, + { + .bpp = DSC_BPP(15), .bpc = 10, { 273, 15, 2048, 7, 16, 15, 15, { { 0, 2, 10 }, { 2, 5, 8 }, { 3, 5, 6 }, { 4, 6, 4 }, { 5, 6, 2 }, { 5, 7, 0 }, { 5, 7, -2 }, { 6, 8, -4 }, { 6, 9, -6 }, { 7, 9, -8 }, { 8, 10, -10 }, { 8, 11, -10 }, { 9, 11, -12 }, { 11, 12, -12 }, { 12, 13, -12 } } - }, - /* 15BPP/12BPC */ + } + }, + { + .bpp = DSC_BPP(15), .bpc = 12, { 273, 15, 2048, 11, 20, 19, 19, { { 0, 4, 10 }, { 2, 7, 8 }, { 4, 9, 6 }, { 6, 11, 4 }, { 9, 11, 2 }, { 9, 11, 0 }, { 9, 12, -2 }, { 10, 12, -4 }, @@ -549,8 +575,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 13, 15, -10 }, { 13, 15, -12 }, { 15, 16, -12 }, { 16, 17, -12 } } - }, - /* 15BPP/14BPC */ + } + }, + { + .bpp = DSC_BPP(15), .bpc = 14, { 273, 15, 2048, 15, 24, 23, 23, { { 0, 4, 10 }, { 3, 8, 8 }, { 6, 11, 6 }, { 9, 14, 4 }, { 13, 15, 2 }, { 13, 15, 0 }, { 13, 16, -2 }, { 14, 16, -4 }, @@ -558,8 +586,10 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 17, 19, -10 }, { 17, 19, -12 }, { 19, 20, -12 }, { 20, 21, -12 } } - }, - /* 15BPP/16BPC */ + } + }, + { + .bpp = DSC_BPP(15), .bpc = 16, { 273, 15, 2048, 19, 28, 27, 27, { { 0, 4, 10 }, { 4, 9, 8 }, { 8, 13, 6 }, { 12, 17, 4 }, { 17, 19, 2 }, { 17, 20, 0 }, { 17, 20, -2 }, { 18, 20, -4 }, @@ -568,59 +598,21 @@ static const struct rc_parameters rc_parameters[][MAX_COLUMN_INDEX] = { { 24, 25, -12 } } } - } + }, + { /* sentinel */ } }; -static int get_row_index_for_rc_params(u16 compressed_bpp) -{ - switch (compressed_bpp) { - case 6: - return ROW_INDEX_6BPP; - case 8: - return ROW_INDEX_8BPP; - case 10: - return ROW_INDEX_10BPP; - case 12: - return ROW_INDEX_12BPP; - case 15: - return ROW_INDEX_15BPP; - default: - return -EINVAL; - } -} - -static int get_column_index_for_rc_params(u8 bits_per_component) -{ - switch (bits_per_component) { - case 8: - return COLUMN_INDEX_8BPC; - case 10: - return COLUMN_INDEX_10BPC; - case 12: - return COLUMN_INDEX_12BPC; - case 14: - return COLUMN_INDEX_14BPC; - case 16: - return COLUMN_INDEX_16BPC; - default: - return -EINVAL; - } -} - -static const struct rc_parameters *get_rc_params(u16 compressed_bpp, +static const struct rc_parameters *get_rc_params(u16 dsc_bpp, u8 bits_per_component) { - int row_index, column_index; - - row_index = get_row_index_for_rc_params(compressed_bpp); - if (row_index < 0) - return NULL; + int i; - column_index = get_column_index_for_rc_params(bits_per_component); - if (column_index < 0) - return NULL; + for (i = 0; rc_parameters[i].bpp; i++) + if (rc_parameters[i].bpp == dsc_bpp && + rc_parameters[i].bpc == bits_per_component) + return &rc_parameters[i].params; - return &rc_parameters[row_index][column_index]; + return NULL; } /** @@ -642,11 +634,7 @@ int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg) !vdsc_cfg->bits_per_component)) return -EINVAL; - /* fractional BPP is not supported */ - if (vdsc_cfg->bits_per_pixel & 0xf) - return -EINVAL; - - rc_params = get_rc_params(vdsc_cfg->bits_per_pixel >> 4, + rc_params = get_rc_params(vdsc_cfg->bits_per_pixel, vdsc_cfg->bits_per_component); if (!rc_params) return -EINVAL;