From: Johan Hovold <johan+linaro@kernel.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: "Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Stanimir Varbanov" <svarbanov@mm-sol.com>,
"Andy Gross" <agross@kernel.org>,
"Bjorn Andersson" <bjorn.andersson@linaro.org>,
linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Johan Hovold" <johan+linaro@kernel.org>
Subject: [PATCH] PCI: qcom: Add support for modular builds
Date: Thu, 19 May 2022 11:46:46 +0200 [thread overview]
Message-ID: <20220519094646.23009-1-johan+linaro@kernel.org> (raw)
Allow the Qualcomm PCIe controller driver to be built as a module, which
is useful for multi-platform kernels as well as during development.
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
drivers/pci/controller/dwc/Kconfig | 2 +-
drivers/pci/controller/dwc/pcie-qcom.c | 36 +++++++++++++++++++++++---
2 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 62ce3abf0f19..230f56d1a268 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -168,7 +168,7 @@ config PCI_HISI
Hip05 and Hip06 SoCs
config PCIE_QCOM
- bool "Qualcomm PCIe controller"
+ tristate "Qualcomm PCIe controller"
depends on OF && (ARCH_QCOM || COMPILE_TEST)
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 8523b5ef9d16..e25d5c09657c 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -16,7 +16,7 @@
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
-#include <linux/init.h>
+#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pci.h>
@@ -1425,6 +1425,15 @@ static int qcom_pcie_host_init(struct pcie_port *pp)
return ret;
}
+static void qcom_pcie_host_deinit(struct qcom_pcie *pcie)
+{
+ qcom_ep_reset_assert(pcie);
+ if (pcie->cfg->ops->post_deinit)
+ pcie->cfg->ops->post_deinit(pcie);
+ phy_power_off(pcie->phy);
+ pcie->cfg->ops->deinit(pcie);
+}
+
static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
.host_init = qcom_pcie_host_init,
};
@@ -1651,6 +1660,22 @@ static int qcom_pcie_probe(struct platform_device *pdev)
return ret;
}
+static int qcom_pcie_remove(struct platform_device *pdev)
+{
+ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+
+ dw_pcie_host_deinit(&pcie->pci->pp);
+ qcom_pcie_host_deinit(pcie);
+
+ phy_exit(pcie->phy);
+
+ pm_runtime_put_sync(dev);
+ pm_runtime_disable(dev);
+
+ return 0;
+}
+
static const struct of_device_id qcom_pcie_match[] = {
{ .compatible = "qcom,pcie-apq8084", .data = &apq8084_cfg },
{ .compatible = "qcom,pcie-ipq8064", .data = &ipq8064_cfg },
@@ -1669,6 +1694,7 @@ static const struct of_device_id qcom_pcie_match[] = {
{ .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
{ }
};
+MODULE_DEVICE_TABLE(of, qcom_pcie_match);
static void qcom_fixup_class(struct pci_dev *dev)
{
@@ -1684,10 +1710,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1001, qcom_fixup_class);
static struct platform_driver qcom_pcie_driver = {
.probe = qcom_pcie_probe,
+ .remove = qcom_pcie_remove,
.driver = {
.name = "qcom-pcie",
- .suppress_bind_attrs = true,
.of_match_table = qcom_pcie_match,
},
};
-builtin_platform_driver(qcom_pcie_driver);
+module_platform_driver(qcom_pcie_driver);
+
+MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
+MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
+MODULE_LICENSE("GPL");
--
2.35.1
next reply other threads:[~2022-05-19 9:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-19 9:46 Johan Hovold [this message]
2022-05-26 20:53 ` [PATCH] PCI: qcom: Add support for modular builds Rob Herring
2022-06-23 11:40 ` Johan Hovold
2022-06-23 15:52 ` Bjorn Helgaas
2022-06-27 7:31 ` Johan Hovold
2022-07-14 12:19 ` Stanimir Varbanov
2022-07-14 13:05 ` Dmitry Baryshkov
2022-07-15 16:56 ` Bjorn Helgaas
2022-07-18 7:43 ` Stanimir Varbanov
2022-07-14 13:10 ` Johan Hovold
2022-07-20 16:27 ` Manivannan Sadhasivam
2022-07-20 21:20 ` Bjorn Helgaas
2022-07-21 6:51 ` Johan Hovold
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