From mboxrd@z Thu Jan 1 00:00:00 1970 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 5DF07C7EE25 for ; Fri, 9 Jun 2023 20:19:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230040AbjFIUTh (ORCPT ); Fri, 9 Jun 2023 16:19:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231771AbjFIUTX (ORCPT ); Fri, 9 Jun 2023 16:19:23 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 190E41B9 for ; Fri, 9 Jun 2023 13:19:22 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-4f660e57123so672655e87.3 for ; Fri, 09 Jun 2023 13:19:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1686341960; x=1688933960; 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=WM2lIBCQpaCLxOM0eZa+yyh2dei168j4wOh+tPpmJK0=; b=gzLNdXMGWdBPqiQA7B5eUoaMSuyncfwekHUkflRA8lMz23+qJngQv+qACsgkJypyrB L4YOfXAZZJkm+YrTYHP04+wg2xFGVbfthizUyYYPVvmXH3raZwYfpgPc0WNenG1lHrfi TZoks45l93ZkzdBmIHh3ctj7zs7P9uT1E9ZltSuICh5odV1ys9a7WOgM5326KXNf9TYW E0s1+sCNR7Z0podvlw7Q3wWBUTHBZKdLhEstLZaTmYDeoqifjXTmuKFaiWy0BArqSVBl Go7ktf6WKHM1FhfNmVNTNaxLK1LNULx9gJDZbFFccaH/DRDvGhTR942liPJZRNre7NZO j9JA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686341960; x=1688933960; 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=WM2lIBCQpaCLxOM0eZa+yyh2dei168j4wOh+tPpmJK0=; b=HxTCbk6bF5zqb/+4FvB9KKVy0rMH4ICDUGyGPMFOvUsaz2AC0p1MT+J9p0xbdCOTeO 60UCkURLeID5FQQdS8zFzuPnLAajlQDRMov7+9/1iS7XbJ2Dfd+BhD+5IOlty72MSX0f OUMCBkMHiwAlgE71xl+mrXi8iX0wVZf2LEGia9eOkesIanNiKkS6DRbxz8xYP1eX4ioc DNtEUGHxLtaqNGHM3QIjjjf1XM5pCTDiS+VmrM5lS87WJ+mByDZkMb3ZEd/p3FGNI2uQ 5ou0+4FDi3mtSnAKq4+Q4x9Mtx4Na5UqaDNP737G+w6wujPsltgdqiACjaE7rAKz0lQy Rm5A== X-Gm-Message-State: AC+VfDyyrUwUPx3khMXSsiDT8ONPWfk6UsWrD1s2oifM6HUi0Y5kK8Fy 7NB8u0t5Vvs3XxJFYwpEWisBPQ== X-Google-Smtp-Source: ACHHUZ5bAormfh7KWJB2oKW/wLRnPrxw7KV3qrmhKb8FDp+RbOt03uINWLVcMmt+Ires0ZrjJcgX/Q== X-Received: by 2002:a05:6512:290:b0:4f3:a71a:9e5f with SMTP id j16-20020a056512029000b004f3a71a9e5fmr1497295lfp.65.1686341960341; Fri, 09 Jun 2023 13:19:20 -0700 (PDT) Received: from [192.168.1.101] (abyj190.neoplus.adsl.tpnet.pl. [83.9.29.190]) by smtp.gmail.com with ESMTPSA id b18-20020ac25632000000b004f628eb7884sm641349lff.232.2023.06.09.13.19.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Jun 2023 13:19:20 -0700 (PDT) From: Konrad Dybcio Date: Fri, 09 Jun 2023 22:19:09 +0200 Subject: [PATCH v2 04/22] clk: qcom: smd-rpm: Export clock scaling availability MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20230526-topic-smd_icc-v2-4-e5934b07d813@linaro.org> References: <20230526-topic-smd_icc-v2-0-e5934b07d813@linaro.org> In-Reply-To: <20230526-topic-smd_icc-v2-0-e5934b07d813@linaro.org> To: Andy Gross , Bjorn Andersson , Michael Turquette , Stephen Boyd , Georgi Djakov , Leo Yan , Evan Green Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1686341953; l=1931; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=sfIIZ4nJOxKMuz78S/kJHIPdUookF7KrBzGOCFONLgY=; b=UGsFPui0AzaF8mwTfLqT11gqTSGaF6XKmO5msD2SsfjTYhDoq5xBBDwwF696aoGiYMWfJAghc 0wMWoO20fcxAuSzyDyj4jpMiPdgh9nnfNMzxwC62Wa44XYgWEUOo4Hl X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Before we issue a call to RPM through clk_smd_rpm_enable_scaling() the clock rate requests will not be commited in hardware. This poses a race threat since we're accessing the bus clocks directly from within the interconnect framework. Add a marker to indicate that we're good to go with sending new requests and export it so that it can be referenced from icc. Signed-off-by: Konrad Dybcio --- drivers/clk/qcom/clk-smd-rpm.c | 9 +++++++++ include/linux/soc/qcom/smd-rpm.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c index 937cb1515968..482fe30ee6f0 100644 --- a/drivers/clk/qcom/clk-smd-rpm.c +++ b/drivers/clk/qcom/clk-smd-rpm.c @@ -151,6 +151,7 @@ #define to_clk_smd_rpm(_hw) container_of(_hw, struct clk_smd_rpm, hw) static struct qcom_smd_rpm *rpmcc_smd_rpm; +static bool smd_rpm_clk_scaling; struct clk_smd_rpm { const int rpm_res_type; @@ -385,6 +386,12 @@ static unsigned long clk_smd_rpm_recalc_rate(struct clk_hw *hw, return r->rate; } +bool qcom_smd_rpm_scaling_available(void) +{ + return smd_rpm_clk_scaling; +} +EXPORT_SYMBOL_GPL(qcom_smd_rpm_scaling_available); + static int clk_smd_rpm_enable_scaling(void) { int ret; @@ -410,6 +417,8 @@ static int clk_smd_rpm_enable_scaling(void) return ret; } + smd_rpm_clk_scaling = true; + pr_debug("%s: RPM clock scaling is enabled\n", __func__); return 0; } diff --git a/include/linux/soc/qcom/smd-rpm.h b/include/linux/soc/qcom/smd-rpm.h index 8190878645f9..420f6c79d535 100644 --- a/include/linux/soc/qcom/smd-rpm.h +++ b/include/linux/soc/qcom/smd-rpm.h @@ -65,4 +65,6 @@ int qcom_rpm_smd_write(struct qcom_smd_rpm *rpm, u32 resource_type, u32 resource_id, void *buf, size_t count); +bool qcom_smd_rpm_scaling_available(void); + #endif -- 2.41.0