From patchwork Fri Aug 4 12:06:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Honghui Zhang X-Patchwork-Id: 9881119 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 086DE6031B for ; Fri, 4 Aug 2017 12:08:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D5BD9289D7 for ; Fri, 4 Aug 2017 12:08:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CAA39289DC; Fri, 4 Aug 2017 12:08:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, RCVD_IN_DNSWL_NONE, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8345C289D7 for ; Fri, 4 Aug 2017 12:08:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Cl5JyW7ozaxCUw7YmoDpFwp/wsrBPYZ1w6jvPvZ+0s0=; b=D6Dhqh9J5Ts6n9 Pip1a6htLOCSgf1fmKKFZ+mjFDp1Rr4R8ONnnakeblgF5/nM7D40XIkMoxIxCDpHSQziGhIeUCgWX 1UGvbG443eQiLKjXGtbuJ7Tw54k3KgCcWU2jfGOdEf5Bk1RI4BMK87eME0zHygMfccskOAlhYM994 ex0IwikX9PFWSB6EuRBlG2cGY9iKjfmAUFva4xVsiz1HeqFcp7/WKo1o09ZtKOeju5XbLNvihLdRc YfmP4yKEwPx/cmuN2LbdSPNGUrStoK2nDwtG2jrmUO15g1X6ak97yA9yhgz0Uob97iiFMjNVukG8I 2RpCpda5oP/83jtvS4FA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1ddbOa-0007Kt-9D; Fri, 04 Aug 2017 12:08:00 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1ddbNp-0006bH-Pu; Fri, 04 Aug 2017 12:07:17 +0000 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1421481260; Fri, 04 Aug 2017 20:06:50 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Fri, 4 Aug 2017 20:06:49 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Fri, 4 Aug 2017 20:06:48 +0800 From: To: , , , , , , , , , , , Subject: [PATCH v3 3/6] PCI: mediatek: switch to use platform_get_resource_byname() Date: Fri, 4 Aug 2017 20:06:39 +0800 Message-ID: <45decb30c1eda6303e2e521a8afe3196763307c3.1501846816.git.honghui.zhang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170804_050714_100740_3CE1011E X-CRM114-Status: GOOD ( 11.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, hongkun.cao@mediatek.com, sean.wang@mediatek.com, xinping.qian@mediatek.com, honghui.zhang@mediatek.com, yt.shen@mediatek.com, yong.wu@mediatek.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ryder Lee This is a transitional patch. We currently use platfarm_get_resource() for retrieving the IOMEM resources, but there might be some chips don't have subsys/shared registers part, which depends on platform design, and these will be introduced in further patches. Switch this function to use the platform_get_resource_byname() so that the binding can be agnostic of the resource order. Signed-off-by: Ryder Lee --- drivers/pci/host/pcie-mediatek.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c index 5d7f62e..63d300f 100644 --- a/drivers/pci/host/pcie-mediatek.c +++ b/drivers/pci/host/pcie-mediatek.c @@ -295,7 +295,8 @@ static int mtk_pcie_parse_ports(struct mtk_pcie *pcie, return err; } - regs = platform_get_resource(pdev, IORESOURCE_MEM, index + 1); + snprintf(name, sizeof(name), "port%d", index); + regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); port->base = devm_ioremap_resource(dev, regs); if (IS_ERR(port->base)) { dev_err(dev, "failed to map port%d base\n", index); @@ -336,12 +337,14 @@ static int mtk_pcie_subsys_powerup(struct mtk_pcie *pcie) struct resource *regs; int err; - /* get shared registers */ - regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); - pcie->base = devm_ioremap_resource(dev, regs); - if (IS_ERR(pcie->base)) { - dev_err(dev, "failed to map shared register\n"); - return PTR_ERR(pcie->base); + /* get shared registers, which are optional */ + regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "subsys"); + if (regs) { + pcie->base = devm_ioremap_resource(dev, regs); + if (IS_ERR(pcie->base)) { + dev_err(dev, "failed to map shared register\n"); + return PTR_ERR(pcie->base); + } } pcie->free_ck = devm_clk_get(dev, "free_ck");