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Wed, 17 Jan 2024 10:45:25 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 40HAjOxk021761 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 17 Jan 2024 10:45:24 GMT Received: from hu-sibis-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 17 Jan 2024 02:45:20 -0800 From: Sibi Sankar To: , , , , , , CC: , , , , , Sibi Sankar Subject: [PATCH V2 2/4] firmware: arm_scmi: Add perf_freq_xlate interface Date: Wed, 17 Jan 2024 16:11:14 +0530 Message-ID: <20240117104116.2055349-3-quic_sibis@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240117104116.2055349-1-quic_sibis@quicinc.com> References: <20240117104116.2055349-1-quic_sibis@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: VGrwATozEGT5m7ahFDPsXj_aDfhyd3KC X-Proofpoint-GUID: VGrwATozEGT5m7ahFDPsXj_aDfhyd3KC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-17_05,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxlogscore=999 clxscore=1015 malwarescore=0 bulkscore=0 adultscore=0 spamscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401170075 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1788334816751634854 X-GMAIL-MSGID: 1788334816751634854 Add a new perf_freq_xlate interface to the existing perf_ops to translate a given perf index to frequency. This can be used by the cpufreq driver and framework to determine the throttled frequency from a given perf index and apply HW pressure accordingly. Signed-off-by: Sibi Sankar --- v2: * Rename opp_xlate -> freq_xlate [Viresh] drivers/firmware/arm_scmi/perf.c | 21 +++++++++++++++++++++ include/linux/scmi_protocol.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index ae7681eda276..e286f04ee6e3 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -977,6 +977,26 @@ static int scmi_notify_support(const struct scmi_protocol_handle *ph, u32 domain return 0; } +static int scmi_perf_freq_xlate(const struct scmi_protocol_handle *ph, u32 domain, + int idx, unsigned long *freq) +{ + struct perf_dom_info *dom; + + dom = scmi_perf_domain_lookup(ph, domain); + if (IS_ERR(dom)) + return PTR_ERR(dom); + + if (idx >= dom->opp_count) + return -ERANGE; + + if (!dom->level_indexing_mode) + *freq = dom->opp[idx].perf * dom->mult_factor; + else + *freq = dom->opp[idx].indicative_freq * dom->mult_factor; + + return 0; +} + static const struct scmi_perf_proto_ops perf_proto_ops = { .num_domains_get = scmi_perf_num_domains_get, .info_get = scmi_perf_info_get, @@ -992,6 +1012,7 @@ static const struct scmi_perf_proto_ops perf_proto_ops = { .fast_switch_possible = scmi_fast_switch_possible, .power_scale_get = scmi_power_scale_get, .perf_notify_support = scmi_notify_support, + .perf_freq_xlate = scmi_perf_freq_xlate, }; static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph, diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index b0947d004826..6221d391386c 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -145,6 +145,7 @@ struct scmi_perf_notify_info { * @power_scale_mw_get: indicates if the power values provided are in milliWatts * or in some other (abstract) scale * @perf_notify_support: indicates if limit and level change notification is supported + * @perf_freq_xlate: translates the given perf index to frequency in Hz */ struct scmi_perf_proto_ops { int (*num_domains_get)(const struct scmi_protocol_handle *ph); @@ -173,6 +174,8 @@ struct scmi_perf_proto_ops { enum scmi_power_scale (*power_scale_get)(const struct scmi_protocol_handle *ph); int (*perf_notify_support)(const struct scmi_protocol_handle *ph, u32 domain, struct scmi_perf_notify_info *info); + int (*perf_freq_xlate)(const struct scmi_protocol_handle *ph, u32 domain, + int idx, unsigned long *freq); }; /**