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 7BD4EC433EF for ; Thu, 21 Apr 2022 20:39:44 +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=gN8QzqSlXDA080xADZ+yoj77UnkZO5BKaetORWlkGxs=; b=r2hFPCNRUH3gm6 BLwa3j+1b9gh80McjgFzCqebN3s0ZzPi94w/K8ITEfd08Jkjufkvsojr4BIZaxeSXbu7cnugzdCp9 U+PxoOhe7UaQN5sVU0sVtbSEN7ucswjGgPm63VQMgz4VqjOVr/lMQV1Eur5KampzsN86fXGBmtBzy Mrirt7+x5gZjdc6S0BE4ArtpqbmB1+tLX9KsEJ3oOvjr1fkCenxrlp6Fs7Z3fEqDZDrjA+rIxnW3o OhJ8nSh8iKm+A4T7Fadbb+Qg/oYzP2JGfhmKym4pClNPb3jt079HVsiN/WSj9JSlOQd0fPdtEqvx4 gNocPCTyuZctNiYgGtsA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhdZa-00EvDv-KX; Thu, 21 Apr 2022 20:38:42 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhdYr-00Euut-7u for linux-arm-kernel@lists.infradead.org; Thu, 21 Apr 2022 20:37:59 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 23LKbl8p090016; Thu, 21 Apr 2022 15:37:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1650573467; bh=0d5eQnd+UR9U9jPUjFIONA+8xaxiU9xXTiPVUnEhXc4=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=Vc5jk9sV9XyEevpIGBybWpxJH2n/iCl6PeAJw/y73wgs4/bIuOCyWGw0A8Tyb2m5w 1Dz9Ro2EbsU+abZ0ZUaDw2+UdvQ4987Pk4+MezAXNp+CtZoeR9PwI2JXqODv8sI2iS qbBu73f9jgb7jr3aJgGmUsu33dVAyS6WQ7mXZbXM= Received: from DLEE106.ent.ti.com (dlee106.ent.ti.com [157.170.170.36]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 23LKbll4001174 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 21 Apr 2022 15:37:47 -0500 Received: from DLEE103.ent.ti.com (157.170.170.33) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Thu, 21 Apr 2022 15:37:46 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Thu, 21 Apr 2022 15:37:47 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 23LKbkZm093984; Thu, 21 Apr 2022 15:37:46 -0500 From: Dave Gerlach To: Rob Herring , Santosh Shilimkar , Krzysztof Kozlowski , Tero Kristo , Nishanth Menon CC: , , , Vignesh Raghavendra , Dave Gerlach Subject: [PATCH 6/6] firmware: ti_sci: Introduce prepare system suspend call Date: Thu, 21 Apr 2022 15:36:59 -0500 Message-ID: <20220421203659.27853-7-d-gerlach@ti.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20220421203659.27853-1-d-gerlach@ti.com> References: <20220421203659.27853-1-d-gerlach@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220421_133757_469382_E46C94E1 X-CRM114-Status: GOOD ( 16.67 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce a ti_sci_prepare_system_suspend call to be used in the driver suspend handler to allow the system to identify the low power mode being entered and if nevessary, send TI_SCI_MSG_BEGIN_SLEEP with information about the mode is being entered and the address for DDR memory carveout. Signed-off-by: Dave Gerlach --- drivers/firmware/ti_sci.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index 772643cb940c..07b6fa98bb45 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include "ti_sci.h" @@ -3388,11 +3389,41 @@ static void ti_sci_set_is_suspending(struct ti_sci_info *info, bool is_suspendin info->is_suspending = is_suspending; } +static int ti_sci_prepare_system_suspend(struct ti_sci_info *info) +{ + int ret = 0; + int mode; + + switch (pm_suspend_target_state) { + case PM_SUSPEND_MEM: + mode = TISCI_MSG_VALUE_SLEEP_MODE_DEEP_SLEEP; + break; + default: + ret = -EINVAL; + } + + /* + * Do not fail if we don't have action to take for a + * specific suspend mode. + */ + if (ret) + return 0; + + ret = ti_sci_cmd_prepare_sleep(&info->handle, mode, info->mem_ctx_lo, + info->mem_ctx_hi, 0); + + return ret; +} + static int ti_sci_suspend(struct device *dev) { struct ti_sci_info *info = dev_get_drvdata(dev); int ret = 0; + ret = ti_sci_prepare_system_suspend(info); + if (ret) + return ret; + /* * We must switch operation to polled mode now as drivers and the genpd * layer may make late TI SCI calls to change clock and device states -- 2.35.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel