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: 624009 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5A3FC43219 for ; Fri, 11 Nov 2022 17:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234074AbiKKRTA (ORCPT ); Fri, 11 Nov 2022 12:19:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234222AbiKKRSx (ORCPT ); Fri, 11 Nov 2022 12:18:53 -0500 Received: from fllv0015.ext.ti.com (fllv0015.ext.ti.com [198.47.19.141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D8EE5B5A2; Fri, 11 Nov 2022 09:18:43 -0800 (PST) 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 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.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