From patchwork Wed Jul 7 08:27:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 471108 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65273C07E95 for ; Wed, 7 Jul 2021 08:27:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BA3E61CB0 for ; Wed, 7 Jul 2021 08:27:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230507AbhGGIaf (ORCPT ); Wed, 7 Jul 2021 04:30:35 -0400 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:5444 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230086AbhGGIac (ORCPT ); Wed, 7 Jul 2021 04:30:32 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1678RZkJ008701; Wed, 7 Jul 2021 10:27:41 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=9TyeVyZnMkgMi7rNxpIQgoXB5CHPNRptXN8NpMJB0Ss=; b=H9/eUmgtNtrjCYIgHISWo88+SMb2R97ZbWVh8XD/aK5NEqFW9/LBITD1lG/MKTr7xGSR u300M7Tt3WWzWg9Kcn56I/DyLbZrXJ5ILeGOlrlLR4fNczqeXLTtxWqtOAiBsQT4Jcor 4TY3oycHiFyvxdAwAleoXFcPI3MVyuoJ6zUuBhjqo47zLkw8PaNvEWwmT8VUAFBs5u5V a8Mvk+FYGjrYIvZZqTxEO5wJxeoVZjOOBoP2FhdcI6IscjFSdLFEMdWohSHSfxwYE4g6 ooeDZd+4oOqggjOL9JNO4OFx7kOim/409qIyW1Oy8t46GV9C1Lp7Wkv9qihnYjySqj6X Dw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 39muqtu2xp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Jul 2021 10:27:41 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6FCC9100038; Wed, 7 Jul 2021 10:27:41 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 64ABC215125; Wed, 7 Jul 2021 10:27:41 +0200 (CEST) Received: from localhost (10.75.127.49) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 7 Jul 2021 10:27:40 +0200 From: Alain Volmat To: , CC: , , , , , , , Subject: [PATCH v2 2/7] spi: stm32: enable pm_runtime autosuspend Date: Wed, 7 Jul 2021 10:27:01 +0200 Message-ID: <1625646426-5826-3-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625646426-5826-1-git-send-email-alain.volmat@foss.st.com> References: <1625646426-5826-1-git-send-email-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-07-07_05:2021-07-06,2021-07-07 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This commit enables the pm_runtime autosuspend and sets a 1ms autosuspend delay. Signed-off-by: Alain Volmat --- drivers/spi/spi-stm32.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index a92a28933edb..fe35c5cfb820 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -162,6 +162,8 @@ #define SPI_3WIRE_TX 3 #define SPI_3WIRE_RX 4 +#define STM32_SPI_AUTOSUSPEND_DELAY 1 /* 1 ms */ + /* * use PIO for small transfers, avoiding DMA setup/teardown overhead for drivers * without fifo buffers. @@ -1924,6 +1926,9 @@ static int stm32_spi_probe(struct platform_device *pdev) if (spi->dma_tx || spi->dma_rx) master->can_dma = stm32_spi_can_dma; + pm_runtime_set_autosuspend_delay(&pdev->dev, + STM32_SPI_AUTOSUSPEND_DELAY); + pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_get_noresume(&pdev->dev); pm_runtime_enable(&pdev->dev); @@ -1935,6 +1940,9 @@ static int stm32_spi_probe(struct platform_device *pdev) goto err_pm_disable; } + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + dev_info(&pdev->dev, "driver initialized\n"); return 0; @@ -1943,6 +1951,7 @@ static int stm32_spi_probe(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); pm_runtime_put_noidle(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); err_dma_release: if (spi->dma_tx) dma_release_channel(spi->dma_tx); @@ -1967,6 +1976,8 @@ static int stm32_spi_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); pm_runtime_put_noidle(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); + if (master->dma_tx) dma_release_channel(master->dma_tx); if (master->dma_rx)