From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754167AbeEaJHK (ORCPT ); Thu, 31 May 2018 05:07:10 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:8215 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754080AbeEaJHF (ORCPT ); Thu, 31 May 2018 05:07:05 -0400 From: Xiaowei Song To: , , , , , , , , , , CC: , Subject: [PATCH v5 1/1] PCI: kirin: Add MSI support Date: Thu, 31 May 2018 17:06:43 +0800 Message-ID: <20180531090643.96810-2-songxiaowei@hisilicon.com> X-Mailer: git-send-email 2.11.GIT In-Reply-To: <20180531090643.96810-1-songxiaowei@hisilicon.com> References: <20180531090643.96810-1-songxiaowei@hisilicon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [100.107.55.164] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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); -- 2.11.GIT