From patchwork Sat Jan 9 13:51:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 359792 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1ABC5C433E6 for ; Sat, 9 Jan 2021 13:52:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7D8323A23 for ; Sat, 9 Jan 2021 13:52:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725951AbhAINwC (ORCPT ); Sat, 9 Jan 2021 08:52:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726357AbhAINv4 (ORCPT ); Sat, 9 Jan 2021 08:51:56 -0500 Received: from relay03.th.seeweb.it (relay03.th.seeweb.it [IPv6:2001:4b7a:2000:18::164]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AA07C0617A3 for ; Sat, 9 Jan 2021 05:51:16 -0800 (PST) Received: from IcarusMOD.eternityproject.eu (unknown [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by m-r1.th.seeweb.it (Postfix) with ESMTPSA id 955431F562; Sat, 9 Jan 2021 14:51:14 +0100 (CET) From: AngeloGioacchino Del Regno To: linux-arm-msm@vger.kernel.org Cc: konrad.dybcio@somainline.org, marijn.suijten@somainline.org, martin.botka@somainline.org, phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org, robdclark@gmail.com, sean@poorly.run, airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, AngeloGioacchino Del Regno Subject: [PATCH 2/5] drm/msm/dsi_pll_10nm: Solve TODO for multiplier frac_bits assignment Date: Sat, 9 Jan 2021 14:51:09 +0100 Message-Id: <20210109135112.147759-3-angelogioacchino.delregno@somainline.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210109135112.147759-1-angelogioacchino.delregno@somainline.org> References: <20210109135112.147759-1-angelogioacchino.delregno@somainline.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The number of fractional registers bits is known and already set in the frac_bits variable of the dsi_pll_config struct here in 10nm: remove the TODO by simply using that variable. Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c index 2c1fcf092ab8..8b66e852eb36 100644 --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c @@ -481,6 +481,7 @@ static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw, { struct msm_dsi_pll *pll = hw_clk_to_pll(hw); struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll); + struct dsi_pll_config *config = &pll_10nm->pll_configuration; void __iomem *base = pll_10nm->mmio; u64 ref_clk = pll_10nm->vco_ref_clk_rate; u64 vco_rate = 0x0; @@ -501,9 +502,8 @@ static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw, /* * TODO: * 1. Assumes prescaler is disabled - * 2. Multiplier is 2^18. it should be 2^(num_of_frac_bits) */ - multiplier = 1 << 18; + multiplier = 1 << config->frac_bits; pll_freq = dec * (ref_clk * 2); tmp64 = (ref_clk * 2 * frac); pll_freq += div_u64(tmp64, multiplier);