From patchwork Fri Nov 11 17:17:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Vlaev X-Patchwork-Id: 13040659 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 0E968C4332F for ; Fri, 11 Nov 2022 17:45:28 +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=M/4rHOFmuiYno3Q/mVUOkcmH771wN7bhmpa1jFRo/1o=; b=R7bMZD9M/y78Ja 3bQvPe5g2oXZi22AvmPDs695PtSzClgy9Qbm+5ntxPtt1wqiL7eE/1N/c+1dzHMLf2FJD+BoxEOFP 2qH2pyl4idBM6O8i0nOv2BHHscecn6GpUewgNwsuyeW0NEVAiRrw7+zFoHe60+PA5SAJb5FlTNTct 0syUtHzONHWvUQ9SXmeB4wgkslNX5fR35mrPJC95eyRi83ShdHE17Wedu3RWboHA25JmCRZv2TcNR QURDdrvZull2+gIDeRmqnxZjt9J6IyOnSEy+YqPZ3kF41duJR6QiJhIOCLuVCM50krUgt+n/PcINU zhEVMyXiZ9zycjWNjWtw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1otY4b-00HOX3-K0; Fri, 11 Nov 2022 17:44:14 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1otXfs-00HB78-VM for linux-arm-kernel@lists.infradead.org; Fri, 11 Nov 2022 17:18:42 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 2ABHIYmd081079; Fri, 11 Nov 2022 11:18:34 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1668187114; bh=we6ZlnfS7ikI24BywLqmCBRSZGV/DSCDVpj0SvODauo=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=I9xxV8SdRswF8va6wbWk2j4xHlIVfGZK7uecRHOJoF9YwfIZqTepdItlm+zdoMS7u scDNg697SV4jD4HKCYymxYqrnOJcC98gxvpDlOhadHoiNTJ1p4D1fZJiZT3wcttKsc AjNqaDhz6dkgVwsADV4c9v40c2TjIZiqhLZL+lFg= Received: from DFLE108.ent.ti.com (dfle108.ent.ti.com [10.64.6.29]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 2ABHIYgS057177 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 11 Nov 2022 11:18:34 -0600 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6; Fri, 11 Nov 2022 11:18:34 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6 via Frontend Transport; Fri, 11 Nov 2022 11:18:34 -0600 Received: from jti.ent.ti.com (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 2ABHHewc028454; Fri, 11 Nov 2022 11:18:26 -0600 From: Georgi Vlaev To: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski CC: , , , Vibhore Vardhan , Vignesh Raghavendra , Roger Quadros , Georgi Vlaev Subject: [PATCH v3 5/5] firmware: ti_sci: Introduce prepare system suspend call Date: Fri, 11 Nov 2022 19:17:39 +0200 Message-ID: <20221111171739.160693-6-g-vlaev@ti.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221111171739.160693-1-g-vlaev@ti.com> References: <20221111171739.160693-1-g-vlaev@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-20221111_091841_151313_9BBF2C4F X-CRM114-Status: GOOD ( 16.14 ) 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 From: Dave Gerlach 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 necessary, send TI_SCI_MSG_BEGIN_SLEEP with information about the mode is being entered and the address for allocated memory for storing the context during Deep Sleep. Signed-off-by: Dave Gerlach Signed-off-by: Vibhore Vardhan Signed-off-by: Georgi Vlaev Tested-by: Roger Quadros --- drivers/firmware/ti_sci.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index a961506dbbc4..18734b506e72 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -3509,9 +3509,39 @@ 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; + + return ti_sci_cmd_prepare_sleep(&info->handle, mode, + (u32)(info->ctx_mem_addr & 0xffffffff), + (u32)((u64)info->ctx_mem_addr >> 32), 0); +} + static int ti_sci_suspend(struct device *dev) { struct ti_sci_info *info = dev_get_drvdata(dev); + int ret; + + 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