From patchwork Tue Aug 22 15:12:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Chaitanya Chundru X-Patchwork-Id: 13361059 X-Patchwork-Delegate: kw@linux.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 0C5D0EE49B1 for ; Tue, 22 Aug 2023 15:12:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231139AbjHVPMn (ORCPT ); Tue, 22 Aug 2023 11:12:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233820AbjHVPMn (ORCPT ); Tue, 22 Aug 2023 11:12:43 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB0E11AD; Tue, 22 Aug 2023 08:12:40 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37MDdqSv029573; Tue, 22 Aug 2023 15:12:28 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=dZHSkX/6fvtGnwlb+ZmmWJYhYROGXRBi2FALpqYADiE=; b=MtDaGCDy9e/eydqwdqq4HceMrgVFgQMHWK3ANbAPDI9NkNIndtZUFvqmg/3SVdUQlIQR ZxC/hwFz9ObARGUk9E7Tu9qpJ/wmtJlt7mTzv4PeF4P9WDGQNti5nmsdOd89Uhuua/KB 0nN8Ikmenc0NS1oyaClWMV+RRWiuijGI0vGd96XFn7CueI4JMU7pb7rgd2umyWdG4t9M QnkRpcuCzpdUNkO9fxrFskjJJNTpO6NyV5tHRquzZ6gPAbQ4NFMte5/wLeIi4UxekFOO XQwW7HGxwVt0SpYk9ZLgCyuSxuTQKPlLCiFwsJsyrT05gYK+zQGf9ojuoAO/g1zHASCm 1w== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3smx3009hq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Aug 2023 15:12:27 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 37MFCOG5032377; Tue, 22 Aug 2023 15:12:24 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptkwbvy-1; Tue, 22 Aug 2023 15:12:24 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37MFCOZG032369; Tue, 22 Aug 2023 15:12:24 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37MFCNTp032355; Tue, 22 Aug 2023 15:12:24 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 57BE94B98; Tue, 22 Aug 2023 20:42:23 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, quic_parass@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Viresh Kumar , Nishanth Menon , Stephen Boyd , "Rafael J. Wysocki" , linux-pm@vger.kernel.org (open list:OPERATING PERFORMANCE POINTS (OPP)) Subject: [PATCH v4 3/4] OPP: Add api to retrieve opps which is at most the provided level Date: Tue, 22 Aug 2023 20:42:20 +0530 Message-Id: <1692717141-32743-4-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1692717141-32743-1-git-send-email-quic_krichai@quicinc.com> References: <1692717141-32743-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: ic0KUM2-GCoD2akHeDRwbBQ0rmyBIoVJ X-Proofpoint-GUID: ic0KUM2-GCoD2akHeDRwbBQ0rmyBIoVJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-22_13,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1011 adultscore=0 mlxlogscore=832 priorityscore=1501 impostorscore=0 mlxscore=0 phishscore=0 suspectscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308220116 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add dev_pm_opp_find_level_floor() for searching a lesser match or operating on OPP in the order of decreasing level. Signed-off-by: Krishna chaitanya chundru --- drivers/opp/core.c | 26 ++++++++++++++++++++++++++ include/linux/pm_opp.h | 4 ++++ 2 files changed, 30 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 954c948..e668cf2 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -727,6 +727,32 @@ struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil); + +/** + * dev_pm_opp_find_level_floor() - Search for a rounded floor freq + * @dev: device for which we do this operation + * @freq: Start level + * + * Search for the matching floor *available* OPP from a starting level + * for a device. + * + * Return: matching *opp and refreshes *level 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_level_floor(struct device *dev, + unsigned long *level) +{ + return _find_key_floor(dev, level, 0, true, _read_level, NULL); +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_floor); + /** * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth * @dev: device for which we do this operation diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index dc1fb58..a3bc386 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -128,6 +128,8 @@ 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, unsigned int *level); +struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev, + unsigned long *level); struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq); @@ -285,6 +287,8 @@ static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev, unsigned int *bw, int index) +static inline struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev, + unsigned long *level) { return ERR_PTR(-EOPNOTSUPP); }