recipes-kernel/linux/linux-mediatek-5.4/mediatek/patches-5.4/0992-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch

From patchwork Thu May 28 06:16:46 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Chuanjia Liu <chuanjia.liu@mediatek.com>
X-Patchwork-Id: 11574781
Return-Path: 
 <SRS0=ftSA=7K=lists.infradead.org=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@kernel.org>
Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org
 [172.30.200.123])
	by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A99B60D
	for <patchwork-linux-mediatek@patchwork.kernel.org>;
 Thu, 28 May 2020 06:19:04 +0000 (UTC)
Received: from bombadil.infradead.org (bombadil.infradead.org
 [198.137.202.133])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id DCC99208FE
	for <patchwork-linux-mediatek@patchwork.kernel.org>;
 Thu, 28 May 2020 06:19:03 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=pass (2048-bit key) header.d=lists.infradead.org
 header.i=@lists.infradead.org header.b="SpOi0ueF";
	dkim=fail reason="signature verification failed" (1024-bit key)
 header.d=mediatek.com header.i=@mediatek.com header.b="UGIBoIEG"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DCC99208FE
Authentication-Results: mail.kernel.org;
 dmarc=fail (p=none dis=none) header.from=mediatek.com
Authentication-Results: mail.kernel.org;
 spf=none
 smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org
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=LIr5poLUT/UdH6/akh/pnICGGa3rUBkN+4FhE1DyOrU=; b=SpOi0ueFcoJ/ka
	4esa6cDd5oU4fp0z684ZVPaVvvhm/azSZBBMYinHaAW6EvzKcMNYIX9grP8eg/728lEPNTKVq0I8H
	PQZ9KvD4uTu8Opo1hD8LsRSLr+YLpNKt3KPOY/4gpwQ97uU9rI5PwkuAxPBgR949Vh5EiG0Vaww1H
	Ep+I5BFRn2LVVQZP1Z7U0A0VUcOTLJ4znoWRLEXxtM9/Wd4hwQsrEPQszeDFti/RbwGfJ5efOb5UL
	fhwBzSxELEzAAgH7env/XD2sSSpVf2Qsn6WO8D3ZepMtWrRtARiaRKSNxSBQTg2SSHcjmBSJSzcX+
	w8wqWaUMs0crlBuZWS1g==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
	by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux))
	id 1jeBsc-0001tI-88; Thu, 28 May 2020 06:19:02 +0000
Received: from mailgw01.mediatek.com ([216.200.240.184])
 by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux))
 id 1jeBsZ-0001rp-6g; Thu, 28 May 2020 06:19:01 +0000
X-UUID: beeaf5765357439c91eab1f67ca7ef43-20200527
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
 d=mediatek.com;
 s=dk;
 h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From;
 bh=+IjWjsF/DhknqZB+lLSZ50cyvxDap+8w4tvqhp8Dv68=;
 b=UGIBoIEGJUuq5pEvYEad1HVGpiv6yma+94hva83D2gD8lYmihRWkpJxB2yn+dVtNm7ZXXoQBf+jvvULOmslJgs1HZTLJTnjpdvLmQqo42OXRXSVpTE49HdRkJZDAIWIAReBfOEkFgNxcIX3uedrtnww/NLJ2lagrYPG5ET4lI2E=;
X-UUID: beeaf5765357439c91eab1f67ca7ef43-20200527
Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com
 (envelope-from <chuanjia.liu@mediatek.com>)
 (musrelay.mediatek.com ESMTP with TLS)
 with ESMTP id 603406343; Wed, 27 May 2020 22:19:17 -0800
Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by
 MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id
 15.0.1497.2; Wed, 27 May 2020 23:18:47 -0700
Received: from mtkcas07.mediatek.inc (172.21.101.84) by
 mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id
 15.0.1497.2; Thu, 28 May 2020 14:18:51 +0800
Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc
 (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend
 Transport; Thu, 28 May 2020 14:18:49 +0800
From: <chuanjia.liu@mediatek.com>
To: <robh+dt@kernel.org>, <ryder.lee@mediatek.com>, <matthias.bgg@gmail.com>
Subject: [PATCH v2 2/4] PCI: mediatek: Use regmap to get shared pcie-cfg base
Date: Thu, 28 May 2020 14:16:46 +0800
Message-ID: <20200528061648.32078-3-chuanjia.liu@mediatek.com>
X-Mailer: git-send-email 2.18.0
In-Reply-To: <20200528061648.32078-1-chuanjia.liu@mediatek.com>
References: <20200528061648.32078-1-chuanjia.liu@mediatek.com>
MIME-Version: 1.0
X-MTK: N
X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 
X-CRM114-CacheID: sfid-20200527_231859_251275_BED2B1E2 
X-CRM114-Status: GOOD (  11.62  )
X-Spam-Score: -0.2 (/)
X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary:
 Content analysis details:   (-0.2 points)
 pts rule name              description
 ---- ----------------------
 --------------------------------------------------
 -0.0 SPF_PASS               SPF: sender matches SPF record
 0.0 SPF_HELO_NONE          SPF: HELO does not publish an SPF Record
 0.0 MIME_BASE64_TEXT       RAW: Message text disguised using base64
 encoding
 -0.1 DKIM_VALID_AU          Message has a valid DKIM or DK signature from
 author's domain
 0.1 DKIM_SIGNED            Message has a DKIM or DK signature,
 not necessarily
 valid
 -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
 -0.1 DKIM_VALID_EF          Message has a valid DKIM or DK signature from
 envelope-from domain
 0.0 UNPARSEABLE_RELAY      Informational: message has unparseable relay
 lines
X-BeenThere: linux-mediatek@lists.infradead.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <linux-mediatek.lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mediatek>,
 <mailto:linux-mediatek-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-mediatek/>
List-Post: <mailto:linux-mediatek@lists.infradead.org>
List-Help: <mailto:linux-mediatek-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mediatek>,
 <mailto:linux-mediatek-request@lists.infradead.org?subject=subscribe>
Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com,
 srv_heupstream@mediatek.com, "chuanjia.liu" <Chuanjia.Liu@mediatek.com>,
 linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
 jianjun.wang@mediatek.com, linux-mediatek@lists.infradead.org,
 yong.wu@mediatek.com, bhelgaas@google.com,
 linux-arm-kernel@lists.infradead.org, amurray@thegoodpenguin.co.uk
Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org>
Errors-To: 
 linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org

From: "chuanjia.liu" <Chuanjia.Liu@mediatek.com>

Use regmap to get shared pcie-cfg base and change
the method to get pcie irq.

Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 drivers/pci/controller/pcie-mediatek.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -14,6 +14,7 @@
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
 #include <linux/msi.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
@@ -23,6 +24,7 @@
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/regmap.h>
 #include <linux/reset.h>
 
 #include "../pci.h"
@@ -205,6 +207,7 @@ struct mtk_pcie_port {
  * struct mtk_pcie - PCIe host information
  * @dev: pointer to PCIe device
  * @base: IO mapped register base
+ * @cfg: IO mapped register map for PCIe config
  * @free_ck: free-run reference clock
  * @mem: non-prefetchable memory resource
  * @ports: pointer to PCIe port information
@@ -214,6 +217,7 @@ struct mtk_pcie_port {
 struct mtk_pcie {
 	struct device *dev;
 	void __iomem *base;
+	struct regmap *cfg;
 	struct clk *free_ck;
 
 	struct resource mem;
@@ -651,7 +655,7 @@ static int mtk_pcie_setup_irq(struct mtk
 		return err;
 	}
 
-	port->irq = platform_get_irq(pdev, port->slot);
+	port->irq = platform_get_irq_byname(pdev, "pcie_irq");
 	irq_set_chained_handler_and_data(port->irq,
 					 mtk_pcie_intr_handler, port);
 
@@ -666,12 +670,11 @@ static int mtk_pcie_startup_port_v2(stru
 	u32 val;
 	int err;
 
-	/* MT7622 platforms need to enable LTSSM and ASPM from PCIe subsys */
-	if (pcie->base) {
-		val = readl(pcie->base + PCIE_SYS_CFG_V2);
-		val |= PCIE_CSR_LTSSM_EN(port->slot) |
-		       PCIE_CSR_ASPM_L1_EN(port->slot);
-		writel(val, pcie->base + PCIE_SYS_CFG_V2);
+	/* MT7622/MT7629 platforms need to enable LTSSM and ASPM. */
+	if (pcie->cfg) {
+		val = PCIE_CSR_LTSSM_EN(port->slot) |
+		      PCIE_CSR_ASPM_L1_EN(port->slot);
+		regmap_update_bits(pcie->cfg, PCIE_SYS_CFG_V2, val, val);
 	}
 
 	/* Assert all reset signals */
@@ -977,6 +980,7 @@ static int mtk_pcie_subsys_powerup(struc
 	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource *regs;
+	struct device_node *cfg_node;
 	int err;
 
 	/* get shared registers, which are optional */
@@ -989,6 +993,13 @@ static int mtk_pcie_subsys_powerup(struc
 		}
 	}
 
+	cfg_node = of_parse_phandle(dev->of_node, "mediatek,pcie-cfg", 0);
+	if (cfg_node) {
+		pcie->cfg = syscon_node_to_regmap(cfg_node);
+		if (IS_ERR(pcie->cfg))
+			return PTR_ERR(pcie->cfg);
+	}
+
 	pcie->free_ck = devm_clk_get(dev, "free_ck");
 	if (IS_ERR(pcie->free_ck)) {
 		if (PTR_ERR(pcie->free_ck) == -EPROBE_DEFER)