From patchwork Tue Jan 28 12:07:37 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Bruel X-Patchwork-Id: 13952497 X-Patchwork-Delegate: kw@linux.com Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (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 0047819D083; Tue, 28 Jan 2025 12:12:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738066379; cv=none; b=ni+/HlaOncLFUyRg8Tku26+VnRhLTmb4Pys0Vte4WEBFo9nYpMhSgPtkU3+vrk6jwhKC8FOPy+DxpG8R+M/VEvTcs/WAgCEosyaKreeAK6+ibUOUngjR+H/gDzJPWx9xyuaTk8Fn6YrGHbGqcQqvWfCS9ASe5b0Cj+Mges2H7YQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738066379; c=relaxed/simple; bh=IQmkhMhiJyltVaIbAD3p+H4elHy6SYijq73/vY0qYu8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=mtve+4llcx3P3Gx5N9Heuqc6mOAyIZ7GWXSi542MLMC/oS755SSCaDgUC3xA/xfMdBuURmSm32SGGw9HnFzbNyXpSTnTLiUO71f7yL94JgWkLBqlcDJJIJanKzr/sxCD34TwItLLd3TmUF9vFdi00Wnr+hwDb8km89p2OD0wS8c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=mlU/4WKC; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="mlU/4WKC" Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 50S9U0m5025055; Tue, 28 Jan 2025 13:12:27 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= pWl1eEN1iUk9ieX08HFfz+2vM8A6BpuZsHouPY02aXE=; b=mlU/4WKCQL6qIvej QuMrAiTViBG7wQ0V4qSgelm+pO/bAF9fhRId5E1S+S/H9+XAwZUx0KFeVoNnS4ym wH47fvW8q13O4JNKzI459UbTiIkuXvRhKpkbzYjILeexF+n7RBuAXAnts/3p6L7R LI5c975SGlknRpC1eHTM9y/Rjhz6LmSvBNgFkn+QsHR8nfcOBNRs61d6X5NbT7iH A4GFM+/pN3ddtmHFeiWoPkvIt01wUcynxtCPioMJzJ1OuXuDJo3kaGOpOBojyGHJ nKtkxSVeHUbwRRIx8Kdk5jQsYbI1F5Q1hE0zjwX6/tYhHxhQ6Unwxs99lC997ioT FOLmAA== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 44ebcbktnx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 28 Jan 2025 13:12:27 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 23C884004B; Tue, 28 Jan 2025 13:11:06 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id F24B82CE641; Tue, 28 Jan 2025 13:08:11 +0100 (CET) Received: from localhost (10.129.178.212) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Tue, 28 Jan 2025 13:08:11 +0100 From: Christian Bruel To: , , , , , , , , , , , , , , CC: , , , , , Subject: [PATCH v4 02/10] PCI: dwc: Add dw_pcie_wake_irq_handler helper Date: Tue, 28 Jan 2025 13:07:37 +0100 Message-ID: <20250128120745.334377-3-christian.bruel@foss.st.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250128120745.334377-1-christian.bruel@foss.st.com> References: <20250128120745.334377-1-christian.bruel@foss.st.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-28_04,2025-01-27_01,2024-11-22_01 Introduce dw_pcie_wake_irq_handler function to support host wakeup from the WAKE# irq. Signed-off-by: Christian Bruel --- drivers/pci/controller/dwc/pcie-designware-host.c | 15 +++++++++++++++ drivers/pci/controller/dwc/pcie-designware.h | 2 ++ 2 files changed, 17 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index ef4799effa03..5a67bee5bf3c 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "../../pci.h" #include "pcie-designware.h" @@ -1054,3 +1055,17 @@ int dw_pcie_resume_noirq(struct dw_pcie *pci) return ret; } EXPORT_SYMBOL_GPL(dw_pcie_resume_noirq); + +irqreturn_t dw_pcie_wake_irq_handler(int irq, void *arg) +{ + struct device *dev = arg; + + dev_dbg(dev, "host wakeup by EP"); + + /* Notify PM core we are wakeup source */ + pm_wakeup_event(dev, 0); + pm_system_wakeup(); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL_GPL(dw_pcie_wake_irq_handler); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index f8bf9c89a152..f54cf7b01cbd 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -511,6 +511,8 @@ void dw_pcie_edma_remove(struct dw_pcie *pci); int dw_pcie_suspend_noirq(struct dw_pcie *pci); int dw_pcie_resume_noirq(struct dw_pcie *pci); +irqreturn_t dw_pcie_wake_irq_handler(int irq, void *arg); + static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) { dw_pcie_write_dbi(pci, reg, 0x4, val);