From patchwork Mon Aug 28 11:42:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konrad Dybcio X-Patchwork-Id: 718531 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 D13A6C83F1C for ; Mon, 28 Aug 2023 11:43:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232479AbjH1LnE (ORCPT ); Mon, 28 Aug 2023 07:43:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232505AbjH1Lmq (ORCPT ); Mon, 28 Aug 2023 07:42:46 -0400 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D690710E for ; Mon, 28 Aug 2023 04:42:42 -0700 (PDT) Received: by mail-lf1-x132.google.com with SMTP id 2adb3069b0e04-500b0f06136so2668236e87.0 for ; Mon, 28 Aug 2023 04:42:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1693222961; x=1693827761; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Ukvy8+Hjdu2oas6MhPznZGI2niV1axKC09nEtbCzbKA=; b=nT3QdztK8oJ/czFZBvHZ8kRRjQkXHbMCaBbwRVgoPsm7kKktXQ2kS/c4whgekPvTW+ mcG4kq3OeMa88Bu6tWgYgRdsFhU9aJ3uLpqtcn6zIeAp/BXMDDa0tcEeK/V37LsOwzmc OXPFOdS0Q8xGQUXXVf3jnpufFqU2PBlPjhRxOil37Q9yJmZtGDeBJNMtEYdfMxz8JGg8 geKVnIA1R9aStKwOUO0Mo6yqKrioD/FnLRxam3e12WHrEv533qEdwyKhG3c0nH3X5H4+ 5R1uWt24Pi4kEq2fmTImK52BXthZNBOMN6j6aMa76GoL5b7Ysx0IMyv4NaLhyx2ms9eu /jlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693222961; x=1693827761; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Ukvy8+Hjdu2oas6MhPznZGI2niV1axKC09nEtbCzbKA=; b=ZVRMNl9KeLno2YL0/BvQBvSARvmn0+RSfDQPv3k1Z2/dmkUOrK/ghdq/fWCAVUIXGg hEWIllwX7HTHV3Q4JWrHajAhXtPl296OyUKwyvsKs2s4b6k3/l2/sq8Uboby1ghjiu90 yejDh+UB9L67NqzqsuPwRPdIU/aINhDQNISCigERfMPn+5A1xwracHZsL5lu0DOpLX4G gSrj6ukqzRPSBl1+uwLakKmOJ2OBl7aO6OGWpOUQCfPjiMMNx2ELZJRblrfyxu1K58sN MYKN0OhnY7OAJtQfKNve7JB0iTDb1xz8LfHyyIGdInOZyMVOUH6vsViwPAVxwuP3AyiS 17fg== X-Gm-Message-State: AOJu0YzynHNT8Gmj0RI8iYuIJ5SOw+Y1T3SQWxTimMeVMtcdg6oJhX9D boHH12DEvssyejoz/QOWXT5u4Q== X-Google-Smtp-Source: AGHT+IFKLQKQjWNIJtzHOeUnY3Z6dmCkBLByyd8W1WfIvfOqs1cMr9niG9gq2D8pRnbp9CNJaJE37Q== X-Received: by 2002:a05:6512:12c4:b0:4fb:9712:a717 with SMTP id p4-20020a05651212c400b004fb9712a717mr19822312lfg.13.1693222961157; Mon, 28 Aug 2023 04:42:41 -0700 (PDT) Received: from [192.168.1.101] (abyl195.neoplus.adsl.tpnet.pl. [83.9.31.195]) by smtp.gmail.com with ESMTPSA id b2-20020ac247e2000000b005009920b6afsm1547799lfp.9.2023.08.28.04.42.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Aug 2023 04:42:40 -0700 (PDT) From: Konrad Dybcio Date: Mon, 28 Aug 2023 13:42:18 +0200 Subject: [PATCH v14 6/9] soc: qcom: cpr: Use u64 for frequency MIME-Version: 1.0 Message-Id: <20230217-topic-cpr3h-v14-6-9fd23241493d@linaro.org> References: <20230217-topic-cpr3h-v14-0-9fd23241493d@linaro.org> In-Reply-To: <20230217-topic-cpr3h-v14-0-9fd23241493d@linaro.org> To: AngeloGioacchino Del Regno , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Viresh Kumar , Nishanth Menon , Stephen Boyd , Niklas Cassel , Liam Girdwood , Mark Brown , Conor Dooley , "Rafael J. Wysocki" , Viresh Kumar , Ulf Hansson Cc: Robert Marko , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Jeffrey Hugo , Marijn Suijten , Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1693222948; l=4796; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=AILG5ZdRZ9L72zNAwxHpmrn3oVh0Tn/B7cbYES7hZlo=; b=cto3m5fc/IX/ZNFBddXCLET5TFzEWruZxsodUJbn6J6EzqUT93zwp15dKKxpTlzuUtlYK09N5 S6CwoSt4M/mDhamD2JIxsTUG5jVEU+gS4oMx8lVU8XVQ04PuB05C+Uo X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org 32 bits is not enough for over-2.changeGHz frequencies. Move all variables that operate on Hz to u64 to avoid overflows. Reviewed-by: AngeloGioacchino Del Regno Tested-by: Jeffrey Hugo Signed-off-by: Konrad Dybcio --- drivers/genpd/qcom/cpr-common.c | 13 +++++++------ drivers/genpd/qcom/cpr-common.h | 9 ++++----- drivers/genpd/qcom/cpr.c | 8 ++++---- 3 files changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/genpd/qcom/cpr-common.c b/drivers/genpd/qcom/cpr-common.c index 44c681bbbf13..3e3a4a61cfde 100644 --- a/drivers/genpd/qcom/cpr-common.c +++ b/drivers/genpd/qcom/cpr-common.c @@ -218,7 +218,7 @@ unsigned int cpr_get_fuse_corner(struct dev_pm_opp *opp) } EXPORT_SYMBOL_GPL(cpr_get_fuse_corner); -unsigned long cpr_get_opp_hz_for_req(struct dev_pm_opp *ref, +u64 cpr_get_opp_hz_for_req(struct dev_pm_opp *ref, struct device *cpu_dev) { u64 rate = 0; @@ -250,7 +250,7 @@ unsigned long cpr_get_opp_hz_for_req(struct dev_pm_opp *ref, out_ref: of_node_put(desc_np); - return (unsigned long) rate; + return rate; } EXPORT_SYMBOL_GPL(cpr_get_opp_hz_for_req); @@ -260,7 +260,7 @@ int cpr_calculate_scaling(struct device *dev, const struct corner *corner) { u32 quot_diff = 0; - unsigned long freq_diff; + u64 freq_diff; int scaling; const struct fuse_corner *fuse, *prev_fuse; int ret; @@ -280,8 +280,9 @@ int cpr_calculate_scaling(struct device *dev, } freq_diff = fuse->max_freq - prev_fuse->max_freq; - freq_diff /= 1000000; /* Convert to MHz */ - scaling = 1000 * quot_diff / freq_diff; + freq_diff = div_u64(freq_diff, 1000000); /* Convert to MHz */ + scaling = 1000 * quot_diff; + do_div(scaling, freq_diff); return min(scaling, fdata->max_quot_scale); } EXPORT_SYMBOL_GPL(cpr_calculate_scaling); @@ -289,7 +290,7 @@ EXPORT_SYMBOL_GPL(cpr_calculate_scaling); int cpr_interpolate(const struct corner *corner, int step_volt, const struct fuse_corner_data *fdata) { - unsigned long f_high, f_low, f_diff; + u64 f_high, f_low, f_diff; int uV_high, uV_low, uV; u64 temp, temp_limit; const struct fuse_corner *fuse, *prev_fuse; diff --git a/drivers/genpd/qcom/cpr-common.h b/drivers/genpd/qcom/cpr-common.h index 0aa227617d2f..1b2fa344eb09 100644 --- a/drivers/genpd/qcom/cpr-common.h +++ b/drivers/genpd/qcom/cpr-common.h @@ -42,7 +42,7 @@ struct fuse_corner { int step_quot; const struct reg_sequence *accs; int num_accs; - unsigned long max_freq; + u64 max_freq; u8 ring_osc_idx; }; @@ -54,13 +54,13 @@ struct corner { int quot_adjust; u32 save_ctl; u32 save_irq; - unsigned long freq; + u64 freq; struct fuse_corner *fuse_corner; }; struct corner_data { unsigned int fuse_corner; - unsigned long freq; + u64 freq; }; struct acc_desc { @@ -92,8 +92,7 @@ int cpr_populate_fuse_common(struct device *dev, int cpr_find_initial_corner(struct device *dev, struct clk *cpu_clk, struct corner *corners, int num_corners); u32 cpr_get_fuse_corner(struct dev_pm_opp *opp); -unsigned long cpr_get_opp_hz_for_req(struct dev_pm_opp *ref, - struct device *cpu_dev); +u64 cpr_get_opp_hz_for_req(struct dev_pm_opp *ref, struct device *cpu_dev); int cpr_calculate_scaling(struct device *dev, const char *quot_offset, const struct fuse_corner_data *fdata, diff --git a/drivers/genpd/qcom/cpr.c b/drivers/genpd/qcom/cpr.c index 2cfeefebd24c..bd0ac95e86e7 100644 --- a/drivers/genpd/qcom/cpr.c +++ b/drivers/genpd/qcom/cpr.c @@ -826,8 +826,8 @@ static int cpr_corner_init(struct cpr_drv *drv) struct corner_data *cdata; const struct fuse_corner_data *fdata; bool apply_scaling; - unsigned long freq_diff, freq_diff_mhz; - unsigned long freq; + unsigned long freq_diff_mhz; + u64 freq, freq_diff; int step_volt = regulator_get_linear_step(drv->vdd_apc); struct dev_pm_opp *opp; @@ -866,7 +866,7 @@ static int cpr_corner_init(struct cpr_drv *drv) cdata[level - 1].freq = freq; fuse = &drv->fuse_corners[fnum]; - dev_dbg(drv->dev, "freq: %lu level: %u fuse level: %u\n", + dev_dbg(drv->dev, "freq: %llu level: %u fuse level: %u\n", freq, dev_pm_opp_get_level(opp) - 1, fnum); if (freq > fuse->max_freq) fuse->max_freq = freq; @@ -940,7 +940,7 @@ static int cpr_corner_init(struct cpr_drv *drv) if (apply_scaling) { freq_diff = fuse->max_freq - corner->freq; - freq_diff_mhz = freq_diff / 1000000; + freq_diff_mhz = (u32)div_u64(freq_diff, 1000000); corner->quot_adjust = scaling * freq_diff_mhz / 1000; corner->uV = cpr_interpolate(corner, step_volt, fdata);