From patchwork Fri May 25 03:58:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Songxiaowei (Kirin_DRV)" X-Patchwork-Id: 920214 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40sXZQ6Dfhz9s0q for ; Fri, 25 May 2018 13:59:42 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754951AbeEYD7U (ORCPT ); Thu, 24 May 2018 23:59:20 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:7743 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754696AbeEYD7S (ORCPT ); Thu, 24 May 2018 23:59:18 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 7B802B37B6993; Fri, 25 May 2018 11:59:04 +0800 (CST) Received: from vm107-55-164.huawei.com (100.107.55.164) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.382.0; Fri, 25 May 2018 11:58:56 +0800 From: Xiaowei Song To: , , , , , , , , , CC: , Subject: [PATCH v5 1/1] PCI: kirin: Add MSI support Date: Fri, 25 May 2018 11:58:55 +0800 Message-ID: <20180525035855.32649-2-songxiaowei@hisilicon.com> X-Mailer: git-send-email 2.11.GIT In-Reply-To: <20180525035855.32649-1-songxiaowei@hisilicon.com> References: <20180525035855.32649-1-songxiaowei@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [100.107.55.164] X-CFilter-Loop: Reflected Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add support for MSI. Signed-off-by: Xiaowei Song --- drivers/pci/dwc/pcie-kirin.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/pci/dwc/pcie-kirin.c b/drivers/pci/dwc/pcie-kirin.c index d2970a009eb5..6997276eb69c 100644 --- a/drivers/pci/dwc/pcie-kirin.c +++ b/drivers/pci/dwc/pcie-kirin.c @@ -430,6 +430,9 @@ static int kirin_pcie_host_init(struct pcie_port *pp) { kirin_pcie_establish_link(pp); + if (IS_ENABLED(CONFIG_PCI_MSI)) + dw_pcie_msi_init(pp); + return 0; } @@ -445,9 +448,34 @@ static const struct dw_pcie_host_ops kirin_pcie_host_ops = { .host_init = kirin_pcie_host_init, }; +static int kirin_pcie_add_msi(struct dw_pcie *pci, + struct platform_device *pdev) +{ + int ret = 0; + + if (IS_ENABLED(CONFIG_PCI_MSI)) { + ret = platform_get_irq(pdev, 0); + if (ret < 0) { + dev_err(&pdev->dev, + "failed to get MSI IRQ (%d)\n", ret); + return ret; + } + + pci->pp.msi_irq = ret; + } + + return ret; +} + static int __init kirin_add_pcie_port(struct dw_pcie *pci, struct platform_device *pdev) { + int ret; + + ret = kirin_pcie_add_msi(pci, pdev); + if (ret) + return ret; + pci->pp.ops = &kirin_pcie_host_ops; return dw_pcie_host_init(&pci->pp);