linux-kernel - [PATCH v2 07/11] PCI: dwc: pcie-kirin: place common init code altogether

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Date:   Wed,  3 Feb 2021 08:01:51 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Binghui Wang <wangbinghui@...ilicon.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: [PATCH v2 07/11] PCI: dwc: pcie-kirin: place common init code altogether

Both Kirin 960 and Kirin 970 need to do ioremap for apb, phy and dbi.

So, use a shared code for those.

It should be noticed that the dbi remap is now done by dwc core, so it
can simply be removed from kirin970_pcie_get_resource().

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 drivers/pci/controller/dwc/pcie-kirin.c | 45 +++++++++++--------------
 1 file changed, 20 insertions(+), 25 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index e1ebe0747978..2bce6e3750d4 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -292,21 +292,27 @@ static void kirin970_pcie_set_eyeparam(struct kirin_pcie *kirin_pcie)
 	kirin_apb_natural_phy_writel(kirin_pcie, val, LANEN_DIG_ASIC_TX_OVRD_IN_1);
 }
 
+static long kirin_common_pcie_get_resource(struct kirin_pcie *kirin_pcie,
+					   struct platform_device *pdev)
+{
+	kirin_pcie->apb_base = devm_platform_ioremap_resource_byname(pdev,
+								     "apb");
+	if (IS_ERR(kirin_pcie->apb_base))
+		return PTR_ERR(kirin_pcie->apb_base);
+
+	kirin_pcie->phy_base = devm_platform_ioremap_resource_byname(pdev,
+								     "phy");
+	if (IS_ERR(kirin_pcie->phy_base))
+		return PTR_ERR(kirin_pcie->phy_base);
+
+	return 0;
+}
+
 static long kirin960_pcie_get_resource(struct kirin_pcie *kirin_pcie,
 				       struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 
-	kirin_pcie->apb_base = devm_platform_ioremap_resource_byname(pdev,
-								     "apb");
-	if (IS_ERR(kirin_pcie->apb_base))
-		return PTR_ERR(kirin_pcie->apb_base);
-
-	kirin_pcie->phy_base = devm_platform_ioremap_resource_byname(pdev,
-								     "phy");
-	if (IS_ERR(kirin_pcie->phy_base))
-		return PTR_ERR(kirin_pcie->phy_base);
-
 	kirin_pcie->crgctrl =
 		syscon_regmap_lookup_by_compatible("hisilicon,hi3660-crgctrl");
 	if (IS_ERR(kirin_pcie->crgctrl))
@@ -331,21 +337,6 @@ static long kirin970_pcie_get_resource(struct kirin_pcie *kirin_pcie,
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	kirin_pcie->apb_base = devm_platform_ioremap_resource_byname(pdev,
-								     "apb");
-	if (IS_ERR(kirin_pcie->apb_base))
-		return PTR_ERR(kirin_pcie->apb_base);
-
-	kirin_pcie->phy_base = devm_platform_ioremap_resource_byname(pdev,
-								     "phy");
-	if (IS_ERR(kirin_pcie->phy_base))
-		return PTR_ERR(kirin_pcie->phy_base);
-
-	kirin_pcie->pci->dbi_base = devm_platform_ioremap_resource_byname(pdev,
-									  "dbi");
-	if (IS_ERR(kirin_pcie->pci->dbi_base))
-		return PTR_ERR(kirin_pcie->pci->dbi_base);
-
 	kirin970_pcie_get_eyeparam(kirin_pcie);
 
 	kirin_pcie->gpio_id_reset[0] = of_get_named_gpio(dev->of_node,
@@ -1141,6 +1132,10 @@ static int kirin_pcie_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	ret = kirin_common_pcie_get_resource(kirin_pcie, pdev);
+	if (ret)
+		return ret;
+
 	ret = ops->get_resource(kirin_pcie, pdev);
 	if (ret)
 		return ret;
-- 
2.29.2