From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Mon, 12 Jan 2026 19:17:11 +0000 (+0100)
Subject: PCI: layerscape: Allow to compile as module
X-Git-Tag: v7.1-rc1~151^2~8^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e36262c5e6c25e19d7d082936f63b3a8e62739f9;p=thirdparty%2Fkernel%2Fstable.git

PCI: layerscape: Allow to compile as module

The layerscape pcie host controller could also be compiled as module.
Add the necessary infrastructure to allow building as module instead of
only as builtin driver.

Since the driver doesn't expose an irqchip controller, it is also safe to
be removed during runtime.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
[mani: added a note about driver removability]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Roy Zang <Roy.Zang@nxp.com>
Link: https://patch.msgid.link/20260112-v6-19-topic-layerscape-pcie-v1-1-1cd863fce50e@pengutronix.de
---

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index d0aa031397fab..1a69b38c2a281 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -121,7 +121,7 @@ config PCI_IMX6_EP
 	  DesignWare core functions to implement the driver.
 
 config PCI_LAYERSCAPE
-	bool "Freescale Layerscape PCIe controller (host mode)"
+	tristate "Freescale Layerscape PCIe controller (host mode)"
 	depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
 	depends on PCI_MSI
 	select PCIE_DW_HOST
diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index a44b5c256d6e2..14d6ac4fc53fd 100644
--- a/drivers/pci/controller/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/iopoll.h>
+#include <linux/module.h>
 #include <linux/of_pci.h>
 #include <linux/of_platform.h>
 #include <linux/of_address.h>
@@ -403,8 +404,16 @@ static const struct dev_pm_ops ls_pcie_pm_ops = {
 	NOIRQ_SYSTEM_SLEEP_PM_OPS(ls_pcie_suspend_noirq, ls_pcie_resume_noirq)
 };
 
+static void ls_pcie_remove(struct platform_device *pdev)
+{
+	struct ls_pcie *pcie = platform_get_drvdata(pdev);
+
+	dw_pcie_host_deinit(&pcie->pci->pp);
+}
+
 static struct platform_driver ls_pcie_driver = {
 	.probe = ls_pcie_probe,
+	.remove = ls_pcie_remove,
 	.driver = {
 		.name = "layerscape-pcie",
 		.of_match_table = ls_pcie_of_match,
@@ -412,4 +421,9 @@ static struct platform_driver ls_pcie_driver = {
 		.pm = &ls_pcie_pm_ops,
 	},
 };
-builtin_platform_driver(ls_pcie_driver);
+module_platform_driver(ls_pcie_driver);
+
+MODULE_AUTHOR("Minghuan Lian <Minghuan.Lian@freescale.com>");
+MODULE_DESCRIPTION("Layerscape PCIe host controller driver");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(of, ls_pcie_of_match);