From patchwork Tue Aug 1 09:14:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 710540 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 5D254C001DF for ; Tue, 1 Aug 2023 09:18:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231294AbjHAJSE (ORCPT ); Tue, 1 Aug 2023 05:18:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232110AbjHAJR1 (ORCPT ); Tue, 1 Aug 2023 05:17:27 -0400 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8EDA1FE8; Tue, 1 Aug 2023 02:16:27 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 3719FgIU066693; Tue, 1 Aug 2023 04:15:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1690881342; bh=1cDlk5nQTkGkrYDGAtT1DqReE4dFrRfYsSqMaXOFOrQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=V7eyo7zv5xmzapeFnpw+BvTWX+ccH7aihStTygQ7zvYyP4q+SNLEfabEcfctGV1TK MVYOt+nzN+6NqT7eTNjszAqkfHF4Hh21OUZuFBhATsNWHArMWS2c8Y4i2ceMII8X8L bB6kup+eCRvl5j+FipJFQF0rVl0SNme4XIeYHAEs= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 3719FgDe066944 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 1 Aug 2023 04:15:42 -0500 Received: from DLEE113.ent.ti.com (157.170.170.24) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 1 Aug 2023 04:15:42 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 1 Aug 2023 04:15:42 -0500 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 3719FgRj038531; Tue, 1 Aug 2023 04:15:42 -0500 Received: from localhost (uda0501179.dhcp.ti.com [172.24.227.217]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 3719Ff8o016141; Tue, 1 Aug 2023 04:15:41 -0500 From: MD Danish Anwar To: Randy Dunlap , Roger Quadros , Simon Horman , Vignesh Raghavendra , Andrew Lunn , Richard Cochran , Conor Dooley , Krzysztof Kozlowski , Rob Herring , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , MD Danish Anwar CC: , , , , , , Subject: [PATCH v13 10/10] net: ti: icssg-prueth: Add Power management support Date: Tue, 1 Aug 2023 14:44:28 +0530 Message-ID: <20230801091428.1359979-11-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230801091428.1359979-1-danishanwar@ti.com> References: <20230801091428.1359979-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Add suspend / resume APIs to support power management in ICSSG ethernet driver. Reviewed-by: Andrew Lunn Signed-off-by: MD Danish Anwar --- drivers/net/ethernet/ti/icssg/icssg_prueth.c | 57 ++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 80721d82f6c5..47b941fb0198 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -1813,6 +1813,62 @@ static void prueth_remove(struct platform_device *pdev) prueth_put_cores(prueth, ICSS_SLICE0); } +#ifdef CONFIG_PM_SLEEP +static int prueth_suspend(struct device *dev) +{ + struct prueth *prueth = dev_get_drvdata(dev); + struct net_device *ndev; + int i, ret; + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + ndev = prueth->registered_netdevs[i]; + + if (!ndev) + continue; + + if (netif_running(ndev)) { + netif_device_detach(ndev); + ret = emac_ndo_stop(ndev); + if (ret < 0) { + netdev_err(ndev, "failed to stop: %d", ret); + return ret; + } + } + } + + return 0; +} + +static int prueth_resume(struct device *dev) +{ + struct prueth *prueth = dev_get_drvdata(dev); + struct net_device *ndev; + int i, ret; + + for (i = 0; i < PRUETH_NUM_MACS; i++) { + ndev = prueth->registered_netdevs[i]; + + if (!ndev) + continue; + + if (netif_running(ndev)) { + ret = emac_ndo_open(ndev); + if (ret < 0) { + netdev_err(ndev, "failed to start: %d", ret); + return ret; + } + netif_device_attach(ndev); + } + } + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static const struct dev_pm_ops prueth_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(prueth_suspend, prueth_resume) +}; + static const struct prueth_pdata am654_icssg_pdata = { .fdqring_mode = K3_RINGACC_RING_MODE_MESSAGE, .quirk_10m_link_issue = 1, @@ -1830,6 +1886,7 @@ static struct platform_driver prueth_driver = { .driver = { .name = "icssg-prueth", .of_match_table = prueth_dt_match, + .pm = &prueth_dev_pm_ops, }, }; module_platform_driver(prueth_driver);