From patchwork Mon May 9 12:03:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chanwoo Choi X-Patchwork-Id: 12843380 X-Patchwork-Delegate: cw00.choi@samsung.com 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 57158C433FE for ; Mon, 9 May 2022 12:04:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233751AbiEIMH7 (ORCPT ); Mon, 9 May 2022 08:07:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233650AbiEIMHw (ORCPT ); Mon, 9 May 2022 08:07:52 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 008C118B97E; Mon, 9 May 2022 05:03:55 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id gj17-20020a17090b109100b001d8b390f77bso16833849pjb.1; Mon, 09 May 2022 05:03:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=G91FP2kdxPJqQWpl2gzd87PoVI6tPI5VOFgNQA9koO4=; b=XEAXQJ39bFgOpxmA091ggA0yryBWnNNHdn5AI5+VXuCvie1plVl+zHDxHU9W3g6Clx GlPyEtNcp2Xi8GRa/7qsGDO6OVqMsOwNg+I/F7BN5lwXvL8RnKU8k87HGNduXYdz7/XC gq7GesuyPithvZC5nI/n86M58WwvOE/kwfoDlQ/aKJMTvsMcQktk3c6WLMACZXgfcNNn ZTXkFBhJ/T0qA287GBpquC5WFoRxwkvoQt9h2kBjHeUc+MwApKovYRChCBbN6KhlOcOW 53LZ1mm8XU9emQDkzHAJiSh8IbalsWzsWNllS0VbgRkvbbMXIRIdzmOQdSXXKPxeVsln fT9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=G91FP2kdxPJqQWpl2gzd87PoVI6tPI5VOFgNQA9koO4=; b=6HAHc6DfsKyRhYi8IFPIM3QMZV/uOudpALIXzjqvl442phm62FvlMFnV0Ye8xphtbh Nm3mxA+sN/zh530a9AHYmUfIU+Ilm9m8joRh2K9VtyR/X0yBMdlmBojMCh6ev4yMPnJJ aRmz7ygBClhCkuO9SNROMQ+bZ3vZ7hD9QDUMYI8AHiI7OvD1VacDwL3JjGJJtk5fTAwx tNp8YO5S4S5q16bX9waRAnFl3pD4pbj9sG4S0Rn0d30bkV0Ksf+iNqOVuoLOjh//Oilq OTRbMFO5RubpboC3j9zAmHnzCO0+rsEhtzNo7Z6FH+nACIVgL/viC53HYSl1Xn9eR2I0 2g6w== X-Gm-Message-State: AOAM530xv7OJxrBUkd99NL0FMEMz40Cqt/3XJ0037vKINBZ2DMf+zuEB a7d8/mvqkscyrmX7Okseu+K5lw6STwTwxA== X-Google-Smtp-Source: ABdhPJwWKZUOd+ibpdk60tmfB9dVdiKtw7LPyFzjey1ZEcl1VaDe0ZwQt5pkRa7bpc1H/dkaTBo2Pg== X-Received: by 2002:a17:90b:3901:b0:1dc:5a24:691 with SMTP id ob1-20020a17090b390100b001dc5a240691mr26215318pjb.40.1652097835245; Mon, 09 May 2022 05:03:55 -0700 (PDT) Received: from localhost.localdomain ([14.32.163.5]) by smtp.gmail.com with ESMTPSA id c4-20020a170903234400b0015e8d4eb245sm7020283plh.143.2022.05.09.05.03.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 05:03:55 -0700 (PDT) From: Chanwoo Choi X-Google-Original-From: Chanwoo Choi To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: johnson.wang@mediatek.com, mka@chromium.org, wenst@chromium.org, jia-wei.chang@mediatek.com, andrew-sh.cheng@mediatek.com, hsinyi@chromium.org, saravanak@google.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, kyungmin.park@samsung.com Subject: [PATCH v3 3/4] PM / devfreq: passive: Reduce duplicate code when passive_devfreq case Date: Mon, 9 May 2022 21:03:36 +0900 Message-Id: <20220509120337.92472-4-cw00.choi@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220509120337.92472-1-cw00.choi@samsung.com> References: <20220509120337.92472-1-cw00.choi@samsung.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org In order to keep the consistent coding style between passive_devfreq and passive_cpufreq, use common code for handling required opp property. Also remove the unneed conditional statement and unify the comment of both passive_devfreq and passive_cpufreq when getting the target frequency. Signed-off-by: Chanwoo Choi --- drivers/devfreq/governor_passive.c | 66 ++++-------------------------- 1 file changed, 8 insertions(+), 58 deletions(-) diff --git a/drivers/devfreq/governor_passive.c b/drivers/devfreq/governor_passive.c index 3fba05beaf24..db02f5219684 100644 --- a/drivers/devfreq/governor_passive.c +++ b/drivers/devfreq/governor_passive.c @@ -92,65 +92,16 @@ static int get_target_freq_with_devfreq(struct devfreq *devfreq, = (struct devfreq_passive_data *)devfreq->data; struct devfreq *parent_devfreq = (struct devfreq *)p_data->parent; unsigned long child_freq = ULONG_MAX; - struct dev_pm_opp *opp, *p_opp; int i, count; - /* - * If the devfreq device with passive governor has the specific method - * to determine the next frequency, should use the get_target_freq() - * of struct devfreq_passive_data. - */ - if (p_data->get_target_freq) - return p_data->get_target_freq(devfreq, freq); + /* Get target freq via required opps */ + child_freq = get_target_freq_by_required_opp(parent_devfreq->dev.parent, + parent_devfreq->opp_table, + devfreq->opp_table, *freq); + if (child_freq) + goto out; - /* - * If the parent and passive devfreq device uses the OPP table, - * get the next frequency by using the OPP table. - */ - - /* - * - parent devfreq device uses the governors except for passive. - * - passive devfreq device uses the passive governor. - * - * Each devfreq has the OPP table. After deciding the new frequency - * from the governor of parent devfreq device, the passive governor - * need to get the index of new frequency on OPP table of parent - * device. And then the index is used for getting the suitable - * new frequency for passive devfreq device. - */ - if (!devfreq->profile || !devfreq->profile->freq_table - || devfreq->profile->max_state <= 0) - return -EINVAL; - - /* - * The passive governor have to get the correct frequency from OPP - * list of parent device. Because in this case, *freq is temporary - * value which is decided by ondemand governor. - */ - if (devfreq->opp_table && parent_devfreq->opp_table) { - p_opp = devfreq_recommended_opp(parent_devfreq->dev.parent, - freq, 0); - if (IS_ERR(p_opp)) - return PTR_ERR(p_opp); - - opp = dev_pm_opp_xlate_required_opp(parent_devfreq->opp_table, - devfreq->opp_table, p_opp); - dev_pm_opp_put(p_opp); - - if (IS_ERR(opp)) - goto no_required_opp; - - *freq = dev_pm_opp_get_freq(opp); - dev_pm_opp_put(opp); - - return 0; - } - -no_required_opp: - /* - * Get the OPP table's index of decided frequency by governor - * of parent device. - */ + /* Use interpolation if required opps is not available */ for (i = 0; i < parent_devfreq->profile->max_state; i++) if (parent_devfreq->profile->freq_table[i] == *freq) break; @@ -158,7 +109,6 @@ static int get_target_freq_with_devfreq(struct devfreq *devfreq, if (i == parent_devfreq->profile->max_state) return -EINVAL; - /* Get the suitable frequency by using index of parent device. */ if (i < devfreq->profile->max_state) { child_freq = devfreq->profile->freq_table[i]; } else { @@ -166,7 +116,7 @@ static int get_target_freq_with_devfreq(struct devfreq *devfreq, child_freq = devfreq->profile->freq_table[count - 1]; } - /* Return the suitable frequency for passive device. */ +out: *freq = child_freq; return 0;