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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BEDE4C43458 for ; Fri, 3 Jul 2026 12:37:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=7dN5JJcDJefKv1blTe+E8nWAngWNIKaaBh4OnpXo15E=; b=uXi/YFrfSW7dy+mlkC2igH4GxT ewQZD8XaA+6ATJzpWLYts6kbAR6smpD3JLOIDUkdnMrYowIsoEiwhQs9ObKrUzExv6YSSZotu8wMl 6J5nrKEnt63mx8UrjqivEhuAlEaD7nPh8bMJhYgzo+CdET0yyyRyp69uQezyfljNZ6wYivpyQiSKH v4V7JfO3bm7pCPcEjl9KUa9XtUmjMIYHtNqTkYiOvPibSYWYNWhtm1ez7VN1kaiRAMnvUfQbYY3/T eXy/NFAA2Z8UThszQ5Qp+psNhqRjHsGX4HDySMsq8ZpiDVc0FrkHzIMtmctTOZMtwU0VLr9Zyjdv+ 1/paLuhg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wfd8x-00000006xNO-2YUu; Fri, 03 Jul 2026 12:37:19 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wfd8t-00000006xKF-3u18 for linux-arm-kernel@bombadil.infradead.org; Fri, 03 Jul 2026 12:37:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=7dN5JJcDJefKv1blTe+E8nWAngWNIKaaBh4OnpXo15E=; b=KPFGF1kj+BHAZMw3RJ+DUUoqe6 m72Ks8ijey4xVlg2KGdxWT5AuDG1bFreAKQg2jC9Iom6GuH8IHl+EgdXjTTbMvNcESllOIrHArA7N YQqtNgRdJS/xP1czg9AbP+7Cd9Lajhc+rrItDYHIeR9bwID2vBjhwKeXwq/R3XqnxhkLDuDOn/EA3 MWKcep6jVjkZApn5DdONE92hyl7dw62zicO5WzlAP7JSJqKCZMGEfLIaXnnANpERTTPqJVJM0Mgqg UtVz29c3/DPp/IX0jTkA57iIWyADQOpi4DO3gwzCWOS8ojI+pgHGflmX9I7rqKSosohXm64GJYofQ H/7fB3pA==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.99.2 #2 (Red Hat Linux)) id 1wfd8q-00000004ot1-3YKK for linux-arm-kernel@lists.infradead.org; Fri, 03 Jul 2026 12:37:14 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3E575464B; Fri, 3 Jul 2026 05:37:07 -0700 (PDT) Received: from pluto.fritz.box (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 32C3A3F905; Fri, 3 Jul 2026 05:37:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1783082231; bh=vIqtMpT6CBJeRHkaZoAhfLBxkNoxLuuYxII5Aqu1Q/Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W2x1+JrQkXqWbnYUc7/h3mFJ/4dO6Xsq7JPBig/UCXR6HlELJZu3F1V+FVMcR9cww 7Tz3FaNUMuvzrUrywOxCwisyr+iD9lyXwwCvPgeFrtPzxkFsJPPw1Z+8Pbptz09ooL Xa4csZsVm+S+z6t1k6w1lhz3EAcPx76IIV/9fmJc= From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arm-scmi@vger.kernel.org, linux-doc@vger.kernel.org Cc: sudeep.holla@kernel.org, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, etienne.carriere@st.com, peng.fan@oss.nxp.com, michal.simek@amd.com, d-gole@ti.com, jic23@kernel.org, elif.topuz@arm.com, lukasz.luba@arm.com, philip.radford@arm.com, brauner@kernel.org, david@kernel.org, souvik.chakravarty@arm.com, leitao@kernel.org, kas@kernel.org, puranjay@kernel.org, usama.arif@linux.dev, kernel-team@meta.com, Cristian Marussi Subject: [PATCH v5 11/23] firmware: arm_scmi: Add support for Telemetry reset Date: Fri, 3 Jul 2026 13:35:49 +0100 Message-ID: <20260703123601.381275-12-cristian.marussi@arm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260703123601.381275-1-cristian.marussi@arm.com> References: <20260703123601.381275-1-cristian.marussi@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260703_133713_257161_18C51C17 X-CRM114-Status: GOOD ( 15.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for Telemetry operations needed to request platform to reset telemetry current configuration and data events values. Signed-off-by: Cristian Marussi --- v3 --> v4 - reset tracked Telemetry DE state v2 --> v3 - split from monolithic Telemetry patch - use scmi_telemetry_de_unlink --- drivers/firmware/arm_scmi/telemetry.c | 47 +++++++++++++++++++++++++++ include/linux/scmi_protocol.h | 2 ++ 2 files changed, 49 insertions(+) diff --git a/drivers/firmware/arm_scmi/telemetry.c b/drivers/firmware/arm_scmi/telemetry.c index 2623d764b805..1541b94c38cb 100644 --- a/drivers/firmware/arm_scmi/telemetry.c +++ b/drivers/firmware/arm_scmi/telemetry.c @@ -2530,6 +2530,52 @@ static int scmi_telemetry_des_sample_get(const struct scmi_protocol_handle *ph, return ret; } +static void scmi_telemetry_local_resources_reset(struct telemetry_info *ti) +{ + struct scmi_telemetry_res_info *rinfo; + + /* Get rinfo as it is...without triggering an enumeration */ + rinfo = __scmi_telemetry_resources_get(ti); + /* Clear all local state...*/ + for (int i = 0; i < rinfo->num_des; i++) { + rinfo->des[i]->enabled = false; + rinfo->des[i]->tstamp_enabled = false; + + scmi_telemetry_de_unlink(rinfo->des[i]); + } + for (int i = 0; i < rinfo->num_groups; i++) { + rinfo->grps[i].enabled = false; + rinfo->grps[i].tstamp_enabled = false; + rinfo->grps[i].current_mode = SCMI_TLM_ONDEMAND; + rinfo->grps[i].active_update_interval = 0; + } + + atomic_set(&ti->des_enabled[ENA_STATE], 0); + atomic_set(&ti->des_enabled[ENA_TSTAMP], 0); +} + +static int scmi_telemetry_reset(const struct scmi_protocol_handle *ph) +{ + struct scmi_xfer *t; + int ret; + + ret = ph->xops->xfer_get_init(ph, TELEMETRY_RESET, sizeof(u32), 0, &t); + if (ret) + return ret; + + put_unaligned_le32(0, t->tx.buf); + ret = ph->xops->do_xfer(ph, t); + if (!ret) { + struct telemetry_info *ti = ph->get_priv(ph); + + scmi_telemetry_local_resources_reset(ti); + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + static const struct scmi_telemetry_proto_ops tlm_proto_ops = { .info_get = scmi_telemetry_info_get, .de_lookup = scmi_telemetry_de_lookup, @@ -2541,6 +2587,7 @@ static const struct scmi_telemetry_proto_ops tlm_proto_ops = { .de_data_read = scmi_telemetry_de_data_read, .des_bulk_read = scmi_telemetry_des_bulk_read, .des_sample_get = scmi_telemetry_des_sample_get, + .reset = scmi_telemetry_reset, }; /** diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index 8dc9187e6bb9..4d72a5fbf1bc 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -1015,6 +1015,7 @@ struct scmi_telemetry_de_sample { * the ones belonging to a specific group when provided. * This causes an immediate update platform-side of all the * enabled DEs. + * @reset: reset configuration and telemetry data. */ struct scmi_telemetry_proto_ops { const struct scmi_telemetry_info __must_check *(*info_get) @@ -1040,6 +1041,7 @@ struct scmi_telemetry_proto_ops { int __must_check (*des_sample_get)(const struct scmi_protocol_handle *ph, int grp_id, int *num_samples, struct scmi_telemetry_de_sample *samples); + int (*reset)(const struct scmi_protocol_handle *ph); }; /** -- 2.54.0