From patchwork Mon Mar 16 15:03:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 11440577 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A5F0692A for ; Mon, 16 Mar 2020 15:07:10 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 74B922076E for ; Mon, 16 Mar 2020 15:07:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hDB9vw84" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 74B922076E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=G3OIXcElmlVpH6cbvPGiXst7l2V3gPSzysUJH36pEqg=; b=hDB9vw84wJy4qwL9HNxTScmnnc ml2cdIlK8iEPJwKWe6U0dpHcm0raaVQr96ocfLRoE7+1MXI7+x5hGtfUrA4x6E9iKa87hGuFCNbRC 61X2GTPVB9AKZsBmPUiLJ5Gw7H8jlrQvFHgwNOGO08a6MeF1KESTAfXEE3ZD4jl1wXttt2gU4J8Nr 0ANfhHG+O1a2QMEH+HGN4wqTZusFnUKrzuQs9EFHxXNbdnIiSNFmDVmsToOhHtcVE5uXy2Ab7tu8R qhWp00F//hHMogLUoINVyn0KSR5gotNaS2XuAMM8m9ZQySFjYQ+qJW26/QEOpqqcf66RhdSZ7k2K6 w5FHU9hA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jDrKc-00013p-TQ; Mon, 16 Mar 2020 15:07:06 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jDrHy-00052H-UF for linux-arm-kernel@lists.infradead.org; Mon, 16 Mar 2020 15:04:24 +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 C3327106F; Mon, 16 Mar 2020 08:04:22 -0700 (PDT) Received: from e120937-lin.cambridge.arm.com (e120937-lin.cambridge.arm.com [10.1.197.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C44E03F534; Mon, 16 Mar 2020 08:04:21 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 11/13] firmware: arm_scmi: Add Sensor notifications support Date: Mon, 16 Mar 2020 15:03:32 +0000 Message-Id: <20200316150334.47463-12-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200316150334.47463-1-cristian.marussi@arm.com> References: <20200316150334.47463-1-cristian.marussi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200316_080423_092915_BCE10A22 X-CRM114-Status: GOOD ( 11.53 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jonathan.Cameron@Huawei.com, cristian.marussi@arm.com, james.quinlan@broadcom.com, lukasz.luba@arm.com, sudeep.holla@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Make SCMI Sensor protocol register with the notification core. Reviewed-by: Jonathan Cameron Signed-off-by: Cristian Marussi --- V4 --> V5 - fixed unsual return construct V3 --> V4 - scmi_event field renamed V2 --> V3 - added handle awareness V1 --> V2 - simplified .set_notify_enabled() implementation moving the ALL_SRCIDs logic out of protocol. ALL_SRCIDs logic is now in charge of the notification core, together with proper reference counting of enables - switched to devres protocol-registration --- drivers/firmware/arm_scmi/sensors.c | 69 +++++++++++++++++++++++++++++ include/linux/scmi_protocol.h | 7 +++ 2 files changed, 76 insertions(+) diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c index db1b1ab303da..83b2b566207d 100644 --- a/drivers/firmware/arm_scmi/sensors.c +++ b/drivers/firmware/arm_scmi/sensors.c @@ -6,6 +6,7 @@ */ #include "common.h" +#include "notify.h" enum scmi_sensor_protocol_cmd { SENSOR_DESCRIPTION_GET = 0x3, @@ -71,6 +72,12 @@ struct scmi_msg_sensor_reading_get { #define SENSOR_READ_ASYNC BIT(0) }; +struct scmi_sensor_trip_notify_payld { + __le32 agent_id; + __le32 sensor_id; + __le32 trip_point_desc; +}; + struct sensors_info { u32 version; int num_sensors; @@ -276,6 +283,62 @@ static struct scmi_sensor_ops sensor_ops = { .reading_get = scmi_sensor_reading_get, }; +static bool scmi_sensor_set_notify_enabled(const struct scmi_handle *handle, + u8 evt_id, u32 src_id, bool enable) +{ + int ret; + + ret = scmi_sensor_trip_point_notify(handle, src_id, enable); + if (ret) + pr_warn("SCMI Notifications - Proto:%X - FAIL_ENABLED - evt[%X] dom[%d] - ret:%d\n", + SCMI_PROTOCOL_SENSOR, evt_id, src_id, ret); + + return !ret; +} + +static void *scmi_sensor_fill_custom_report(u8 evt_id, u64 timestamp, + const void *payld, size_t payld_sz, + void *report, u32 *src_id) +{ + void *rep = NULL; + + switch (evt_id) { + case SENSOR_TRIP_POINT_EVENT: + { + const struct scmi_sensor_trip_notify_payld *p = payld; + struct scmi_sensor_trip_point_report *r = report; + + if (sizeof(*p) != payld_sz) + break; + + r->timestamp = timestamp; + r->agent_id = le32_to_cpu(p->agent_id); + r->sensor_id = le32_to_cpu(p->sensor_id); + r->trip_point_desc = le32_to_cpu(p->trip_point_desc); + *src_id = r->sensor_id; + rep = r; + break; + } + default: + break; + } + + return rep; +} + +static const struct scmi_event sensor_events[] = { + { + .id = SENSOR_TRIP_POINT_EVENT, + .max_payld_sz = 12, + .max_report_sz = sizeof(struct scmi_sensor_trip_point_report), + }, +}; + +static const struct scmi_protocol_event_ops sensor_event_ops = { + .set_notify_enabled = scmi_sensor_set_notify_enabled, + .fill_custom_report = scmi_sensor_fill_custom_report, +}; + static int scmi_sensors_protocol_init(struct scmi_handle *handle) { u32 version; @@ -299,6 +362,12 @@ static int scmi_sensors_protocol_init(struct scmi_handle *handle) scmi_sensor_description_get(handle, sinfo); + scmi_register_protocol_events(handle, + SCMI_PROTOCOL_SENSOR, PAGE_SIZE, + &sensor_event_ops, sensor_events, + ARRAY_SIZE(sensor_events), + sinfo->num_sensors); + sinfo->version = version; handle->sensor_ops = &sensor_ops; handle->sensor_priv = sinfo; diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index 70aaf1c86901..0f40ecd0609c 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -404,4 +404,11 @@ struct scmi_perf_level_report { u32 performance_level; }; +struct scmi_sensor_trip_point_report { + ktime_t timestamp; + u32 agent_id; + u32 sensor_id; + u32 trip_point_desc; +}; + #endif /* _LINUX_SCMI_PROTOCOL_H */