From patchwork Mon Apr 7 12:49:02 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parvathi Pudi X-Patchwork-Id: 14040452 X-Patchwork-Delegate: kuba@kernel.org Received: from server.wki.vra.mybluehostin.me (server.wki.vra.mybluehostin.me [162.240.238.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E966C24E00C; Mon, 7 Apr 2025 12:50:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.240.238.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744030215; cv=none; b=O3dFIZn+A2ZOQwqhbfgqRcvwBQXGpwPMXrIC1r20fl5gsb140VEziS7nKpZaRiJ/fnm0813L39AHMe1xr35okfW2QBWE8yQmXsmQ553aQOCfe/Nn7bUwMXrMfuV4Jd6O4E4X+OaJa5ekzjM0hVnDHBIqBARXRFf4pMAUJGl9row= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744030215; c=relaxed/simple; bh=GNwsCth4jL9BF46RAijn7FZFP3Z01h+QRaEyGSQ3kZU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=P3PoEm3s90U0Ad6Gxv4+ktFFS+q3sFIOBBRc2D2Rq0aQlmMPJX5XyaEA7qgVtZ7OnrAvWYx3A7lHOdNKjnvv/3K/VihiSxiOKq2+aDrh0TMOTbljppLuCtzZEW17Dm2WM1685/gkvIhehuIwuhFtKbE/2qK7Y9gR30iHEsQlI+Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=couthit.com; spf=pass smtp.mailfrom=couthit.com; dkim=pass (2048-bit key) header.d=couthit.com header.i=@couthit.com header.b=faCd5m9c; arc=none smtp.client-ip=162.240.238.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=couthit.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=couthit.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=couthit.com header.i=@couthit.com header.b="faCd5m9c" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=couthit.com ; s=default; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=0jI8FHAZftC+1HYuaKmnC6H3JrV3Q+6JExWXE5djLOc=; b=faCd5m9cmhFYJp/bLFO7GWTFdY PudWcKn0DjZtnaKjY3Ou6FM1+aKim3M57NrVTrv0lq0bhLb38uZ9HJJFS/sVYjbEGWQAW4PknmQab Y58Vy3qI+R/JYHuaKWHEqvonotC9ZDSRheRj792LYYAvFw6BcVm4/HTP+1VkuDg1tgmnjdPZ83Y+a rKCu0efFxoU74YcXlQzdsmIhNLVJO6kaRhPj4PVdfYwhGVtEXdeNPLbgjR6utsfHZnrCka/fUVSyM BGjTASB7KDR6yAFEX/NbxcgAE05Ugg8iWeQ07rTzw4Wpr9ZxzF+Qfkw1o7bU6AcyY8BRKWvFQ32OT sW2dz7AA==; Received: from [122.175.9.182] (port=42615 helo=cypher.couthit.local) by server.wki.vra.mybluehostin.me with esmtpa (Exim 4.98.1) (envelope-from ) id 1u1lvT-0000000047R-1Et9; Mon, 07 Apr 2025 18:20:07 +0530 From: Parvathi Pudi To: danishanwar@ti.com, rogerq@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, nm@ti.com, ssantosh@kernel.org, tony@atomide.com, richardcochran@gmail.com, glaroque@baylibre.com, schnelle@linux.ibm.com, m-karicheri2@ti.com, rdunlap@infradead.org, diogo.ivo@siemens.com, basharath@couthit.com, parvathi@couthit.com, horms@kernel.org, jacob.e.keller@intel.com, m-malladi@ti.com, javier.carrasco.cruz@gmail.com, afd@ti.com, s-anna@ti.com Cc: linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, pratheesh@ti.com, prajith@ti.com, vigneshr@ti.com, praneeth@ti.com, srk@ti.com, rogerq@ti.com, krishna@couthit.com, pmohan@couthit.com, mohan@couthit.com Subject: [PATCH net-next v4 09/11] net: ti: prueth: Adds power management support for PRU-ICSS Date: Mon, 7 Apr 2025 18:19:02 +0530 Message-Id: <20250407124904.1051462-10-parvathi@couthit.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250407102528.1048589-1-parvathi@couthit.com> References: <20250407102528.1048589-1-parvathi@couthit.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server.wki.vra.mybluehostin.me X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - couthit.com X-Get-Message-Sender-Via: server.wki.vra.mybluehostin.me: authenticated_id: parvathi@couthit.com X-Authenticated-Sender: server.wki.vra.mybluehostin.me: parvathi@couthit.com X-Source: X-Source-Args: X-Source-Dir: X-Patchwork-Delegate: kuba@kernel.org From: Roger Quadros Changes for supporting the sleep/resume feature for PRU-ICSS. PRU-ICSS will be kept in IDLE mode for optimal power consumption by Linux power management subsystem and will be resumed when it is required. Signed-off-by: Roger Quadros Signed-off-by: Andrew F. Davis Signed-off-by: Basharath Hussain Khaja Signed-off-by: Parvathi Pudi --- drivers/net/ethernet/ti/icssm/icssm_prueth.c | 58 ++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/drivers/net/ethernet/ti/icssm/icssm_prueth.c b/drivers/net/ethernet/ti/icssm/icssm_prueth.c index 8c6270c5cb87..90b5876b93ed 100644 --- a/drivers/net/ethernet/ti/icssm/icssm_prueth.c +++ b/drivers/net/ethernet/ti/icssm/icssm_prueth.c @@ -2308,6 +2308,63 @@ static void icssm_prueth_remove(struct platform_device *pdev) pru_rproc_put(prueth->pru1); } +#ifdef CONFIG_PM_SLEEP +static int icssm_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 = icssm_emac_ndo_stop(ndev); + if (ret < 0) { + netdev_err(ndev, "failed to stop: %d", ret); + return ret; + } + } + } + + return 0; +} + +static int icssm_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 = icssm_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(icssm_prueth_suspend, icssm_prueth_resume) +}; + /* AM57xx SoC-specific firmware data */ static struct prueth_private_data am57xx_prueth_pdata = { .driver_data = PRUSS_AM57XX, @@ -2333,6 +2390,7 @@ static struct platform_driver prueth_driver = { .driver = { .name = "prueth", .of_match_table = prueth_dt_match, + .pm = &prueth_dev_pm_ops, }, }; module_platform_driver(prueth_driver);