From patchwork Mon Feb 12 12:32:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13553003 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 D7B3CC48297 for ; Mon, 12 Feb 2024 12:33:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=w/h7de/sojBVVac62t61J3v9A40C94vhIDXiGg84VrM=; b=fFM1WokE2sVImO 2/xuNdUFP1+LQ4+/GZKd8n231JOH8NOagcYsR4yRJL21hDX7IEnmzxCl4U6apQQCEoMNP1Ds32G0d +HgICRzN14Z8n9cf+fXCB4iqfZ2mg9db8Ztr6L0kS88XKOnUx0+YPVD8IJUarlifEK6GdXTmOTtKa S5pepWM0IlH0suPSjHhEXe4uzz5qQqGIRkAvERc//WhHQpU0lr299RjF5bH1KshYFWBwmQJL5Lejg 91uI6aEYJhfdLDXOrrqwJ0Z9uaa3dF3iq1nhOz9xNusodtO0OWpBancErGkJd9HJ461UxwXDHz8Ao 7qG6a4J0t7mCexIz8AQA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZVUw-00000005HAi-3nRT; Mon, 12 Feb 2024 12:33:22 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZVUk-00000005H2L-0qzb for linux-arm-kernel@lists.infradead.org; Mon, 12 Feb 2024 12:33:11 +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 0D2131063; Mon, 12 Feb 2024 04:33:51 -0800 (PST) Received: from pluto.fritz.box (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3F0ED3F7BD; Mon, 12 Feb 2024 04:33:08 -0800 (PST) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, vincent.guittot@linaro.org, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, souvik.chakravarty@arm.com, Cristian Marussi Subject: [PATCH 05/11] firmware: arm_scmi: Implement SysPower .is_notify_supported callback Date: Mon, 12 Feb 2024 12:32:27 +0000 Message-ID: <20240212123233.1230090-6-cristian.marussi@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240212123233.1230090-1-cristian.marussi@arm.com> References: <20240212123233.1230090-1-cristian.marussi@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240212_043310_342707_F0948D8D X-CRM114-Status: GOOD ( 10.45 ) 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 a preliminary check to verify if SysPower-related notify enable commands are supported at all by the running platform, and then provide the callback needed to allow the core SCMI notification subsytem to fine-grain check if a specific resource domain supports notifications. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/system.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/firmware/arm_scmi/system.c b/drivers/firmware/arm_scmi/system.c index 1621da97bcbb..b6358c155f7f 100644 --- a/drivers/firmware/arm_scmi/system.c +++ b/drivers/firmware/arm_scmi/system.c @@ -36,8 +36,20 @@ struct scmi_system_power_state_notifier_payld { struct scmi_system_info { u32 version; bool graceful_timeout_supported; + bool power_state_notify_cmd; }; +static bool scmi_system_notify_supported(const struct scmi_protocol_handle *ph, + u8 evt_id, u32 src_id) +{ + struct scmi_system_info *pinfo = ph->get_priv(ph); + + if (evt_id != SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER) + return false; + + return pinfo->power_state_notify_cmd; +} + static int scmi_system_request_notify(const struct scmi_protocol_handle *ph, bool enable) { @@ -114,6 +126,7 @@ static const struct scmi_event system_events[] = { }; static const struct scmi_event_ops system_event_ops = { + .is_notify_supported = scmi_system_notify_supported, .set_notify_enabled = scmi_system_set_notify_enabled, .fill_custom_report = scmi_system_fill_custom_report, }; @@ -147,6 +160,9 @@ static int scmi_system_protocol_init(const struct scmi_protocol_handle *ph) if (PROTOCOL_REV_MAJOR(pinfo->version) >= 0x2) pinfo->graceful_timeout_supported = true; + if (!ph->hops->protocol_msg_check(ph, SYSTEM_POWER_STATE_NOTIFY, NULL)) + pinfo->power_state_notify_cmd = true; + return ph->set_priv(ph, pinfo, version); }