linux-kernel - [PATCH v3 4/4] PCI: keystone: Add support to build as a loadable module

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Message-ID: <20250922071222.2814937-5-s-vadapalli@ti.com>
Date: Mon, 22 Sep 2025 12:42:16 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <lpieralisi@...nel.org>, <kwilczynski@...nel.org>, <mani@...nel.org>,
        <robh@...nel.org>, <bhelgaas@...gle.com>, <jingoohan1@...il.com>,
        <christian.bruel@...s.st.com>, <quic_wenbyao@...cinc.com>,
        <inochiama@...il.com>, <mayank.rana@....qualcomm.com>,
        <thippeswamy.havalige@....com>, <shradha.t@...sung.com>,
        <cassel@...nel.org>, <kishon@...nel.org>,
        <sergio.paracuellos@...il.com>, <18255117159@....com>,
        <rongqianfeng@...o.com>, <jirislaby@...nel.org>
CC: <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH v3 4/4] PCI: keystone: Add support to build as a loadable module

The 'pci-keystone.c' driver is the application/glue/wrapper driver for the
Designware PCIe Controllers on TI SoCs. Now that all of the helper APIs
that the 'pci-keystone.c' driver depends upon have been exported for use,
enable support to build the driver as a loadable module.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---

v2 of this patch is at:
https://lore.kernel.org/r/20250912122356.3326888-11-s-vadapalli@ti.com/
Changes since v2:
- Based on Mani's feedback, all code changes associated with driver
  removal have been discarded.

 drivers/pci/controller/dwc/Kconfig        | 6 +++---
 drivers/pci/controller/dwc/pci-keystone.c | 6 ++++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 34abc859c107..46012d6a607e 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -482,10 +482,10 @@ config PCI_DRA7XX_EP
 	  This uses the DesignWare core.
 
 config PCI_KEYSTONE
-	bool
+	tristate
 
 config PCI_KEYSTONE_HOST
-	bool "TI Keystone PCIe controller (host mode)"
+	tristate "TI Keystone PCIe controller (host mode)"
 	depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
 	depends on PCI_MSI
 	select PCIE_DW_HOST
@@ -497,7 +497,7 @@ config PCI_KEYSTONE_HOST
 	  DesignWare core functions to implement the driver.
 
 config PCI_KEYSTONE_EP
-	bool "TI Keystone PCIe controller (endpoint mode)"
+	tristate "TI Keystone PCIe controller (endpoint mode)"
 	depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
 	depends on PCI_ENDPOINT
 	select PCIE_DW_EP
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index f9f8235ea3cd..2fbc714bb6e5 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -17,6 +17,7 @@
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/mfd/syscon.h>
+#include <linux/module.h>
 #include <linux/msi.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
@@ -1134,6 +1135,7 @@ static const struct of_device_id ks_pcie_of_match[] = {
 	},
 	{ },
 };
+MODULE_DEVICE_TABLE(of, ks_pcie_of_match);
 
 static int ks_pcie_probe(struct platform_device *pdev)
 {
@@ -1382,3 +1384,7 @@ static struct platform_driver ks_pcie_driver = {
 	},
 };
 builtin_platform_driver(ks_pcie_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PCIe host controller driver for Texas Instruments Keystone SoCs");
+MODULE_AUTHOR("Murali Karicheri <m-karicheri2@...com>");
-- 
2.43.0