From patchwork Thu Jul 20 05:40:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 704864 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 BA90CEB64DA for ; Thu, 20 Jul 2023 05:43:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229973AbjGTFng (ORCPT ); Thu, 20 Jul 2023 01:43:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229880AbjGTFnN (ORCPT ); Thu, 20 Jul 2023 01:43:13 -0400 Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E5FA42D52 for ; Wed, 19 Jul 2023 22:42:42 -0700 (PDT) Received: by mail-pf1-x42d.google.com with SMTP id d2e1a72fcca58-666e3b15370so245570b3a.0 for ; Wed, 19 Jul 2023 22:42:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1689831744; x=1690436544; 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=9Da5r3Jfw26dVyORzvrEm8qPAG9eUA105lcs0ZwlGe4=; b=OLXiRlHJkgIxd6h4nL1TG2KyNnXeFfkoIfTpn0CRa8X37aS02UlHpPRkJhdkr9IN35 erU2FU6jqK4k/wAvHhZqqODxcw3WsxABVWS6ocm7vjBXFp7lg2gFfB89GUX38dBp4Uba kVXedomdrYOUMenpqUQye7EQWfZITNsN3tc059hob/Bp15DOEwjn0c+cs7cupU6Oi48E gmb9C9xl7Rjnk2OjV3z4gzb010tLzipXyhaEkJdSKEux6cacYUB+96l4WrIFCe9wEJ4q dnxis8d2zAamlt54BNqsSDoimj6iZoj0kngQq+CFCQpiWwjMebe2w+oa0RZ3kpLbHG54 sm5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689831744; x=1690436544; 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=9Da5r3Jfw26dVyORzvrEm8qPAG9eUA105lcs0ZwlGe4=; b=Cqps6IajyihofpuDD5FuRqz/AjBdOVovbHRwfNC0NkUAUXq55pDoeSgOPD+K6wlKEa EWnsbGdqmMeCmanhKwaXupCMA7WuR6i0UqGrljJ2vFB5nUmaY3pPa1fgNuYbJRQin+DN q+jTxVgpv2vHLQ6ITnBQo1yCD7ZJiw9wJ2sWxPk85QM0/xRj0o3Zg0B7cKeEk2/7+CDM AlAimRc/ggKcDg8hCviQE//h0sAs39Px5HtKeIrqBekoWJP8+VBzrnQYPw05p0cKZGwW hXYUr56It70/zqf29n9PjvIvsojhBSCShAbj7AsN1gsER6YhTVI49piGzj4+QOvt2RLv mb7w== X-Gm-Message-State: ABy/qLaDDyIxVU7fUexi1SD35uKfmFcccyeV0KiFYb7d/fgCVDIMlsom qYoc+ODmaw9rLJLeNctgl1nA X-Google-Smtp-Source: APBJJlEZySYTpTpy06AWSI5G52m0csQbrxdZQEOu0Vw2bY7rfM/v52YdYHj6by+q3WXwlYgLzdMn4g== X-Received: by 2002:a05:6a20:a10f:b0:126:a771:b792 with SMTP id q15-20020a056a20a10f00b00126a771b792mr7718694pzk.14.1689831743710; Wed, 19 Jul 2023 22:42:23 -0700 (PDT) Received: from localhost.localdomain ([117.206.119.70]) by smtp.gmail.com with ESMTPSA id r2-20020a170902be0200b001b85bb5fd77sm263367pls.119.2023.07.19.22.42.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jul 2023 22:42:23 -0700 (PDT) From: Manivannan Sadhasivam To: vireshk@kernel.org, nm@ti.com, sboyd@kernel.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, cw00.choi@samsung.com, andersson@kernel.org, konrad.dybcio@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, linux-scsi@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, quic_asutoshd@quicinc.com, quic_cang@quicinc.com, quic_nitirawa@quicinc.com, quic_narepall@quicinc.com, quic_bhaskarv@quicinc.com, quic_richardp@quicinc.com, quic_nguyenb@quicinc.com, quic_ziqichen@quicinc.com, bmasney@redhat.com, krzysztof.kozlowski@linaro.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 07/15] OPP: Introduce dev_pm_opp_find_freq_{ceil/floor}_indexed() APIs Date: Thu, 20 Jul 2023 11:10:52 +0530 Message-Id: <20230720054100.9940-8-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230720054100.9940-1-manivannan.sadhasivam@linaro.org> References: <20230720054100.9940-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In the case of devices with multiple clocks, drivers need to specify the clock index for the OPP framework to find the OPP corresponding to the floor/ceil of the supplied frequency. So let's introduce the two new APIs accepting the clock index as an argument. These APIs use the exising _find_key_ceil() helper by supplying the clock index to it. Signed-off-by: Manivannan Sadhasivam --- drivers/opp/core.c | 54 ++++++++++++++++++++++++++++++++++++++++++ include/linux/pm_opp.h | 18 ++++++++++++++ 2 files changed, 72 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 3f46e499d615..a6d0b6b18e0e 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -658,6 +658,33 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil); +/** + * dev_pm_opp_find_freq_ceil_indexed() - Search for a rounded ceil freq for the + * clock corresponding to the index + * @dev: Device for which we do this operation + * @freq: Start frequency + * @index: Clock index + * + * Search for the matching ceil *available* OPP for the clock corresponding to + * the specified index from a starting freq for a device. + * + * Return: matching *opp and refreshes *freq accordingly, else returns + * ERR_PTR in case of error and should be handled using IS_ERR. Error return + * values can be: + * EINVAL: for bad pointer + * ERANGE: no match found for search + * ENODEV: if device not found in list of registered devices + * + * The callers are required to call dev_pm_opp_put() for the returned OPP after + * use. + */ +struct dev_pm_opp *dev_pm_opp_find_freq_ceil_indexed(struct device *dev, + unsigned long *freq, u32 index) +{ + return _find_key_ceil(dev, freq, index, true, _read_freq, NULL); +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_indexed); + /** * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq * @dev: device for which we do this operation @@ -683,6 +710,33 @@ struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor); +/** + * dev_pm_opp_find_freq_floor_indexed() - Search for a rounded floor freq for the + * clock corresponding to the index + * @dev: Device for which we do this operation + * @freq: Start frequency + * @index: Clock index + * + * Search for the matching floor *available* OPP for the clock corresponding to + * the specified index from a starting freq for a device. + * + * Return: matching *opp and refreshes *freq accordingly, else returns + * ERR_PTR in case of error and should be handled using IS_ERR. Error return + * values can be: + * EINVAL: for bad pointer + * ERANGE: no match found for search + * ENODEV: if device not found in list of registered devices + * + * The callers are required to call dev_pm_opp_put() for the returned OPP after + * use. + */ +struct dev_pm_opp *dev_pm_opp_find_freq_floor_indexed(struct device *dev, + unsigned long *freq, u32 index) +{ + return _find_key_floor(dev, freq, index, true, _read_freq, NULL); +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor_indexed); + /** * dev_pm_opp_find_level_exact() - search for an exact level * @dev: device for which we do this operation diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index dc1fb5890792..991f54da79b5 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -124,6 +124,9 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, unsigned long *freq); +struct dev_pm_opp *dev_pm_opp_find_freq_floor_indexed(struct device *dev, + unsigned long *freq, u32 index); + struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, unsigned int level); struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, @@ -132,6 +135,9 @@ struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq); +struct dev_pm_opp *dev_pm_opp_find_freq_ceil_indexed(struct device *dev, + unsigned long *freq, u32 index); + struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, unsigned int *bw, int index); @@ -271,12 +277,24 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor_indexed(struct device *dev, + unsigned long *freq, u32 index) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq) { return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil_indexed(struct device *dev, + unsigned long *freq, u32 index) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, unsigned int *bw, int index) {