diff mbox series

[v13,20/22] PCI: rcar-gen4-ep: Add R-Car Gen4 PCIe Endpoint support

Message ID 20230418122403.3178462-21-yoshihiro.shimoda.uh@renesas.com
State Superseded
Headers show
Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Commit Message

Yoshihiro Shimoda April 18, 2023, 12:24 p.m. UTC
Add R-Car Gen4 PCIe Endpoint support. This controller is based on
Synopsys DesignWare PCIe.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/pci/controller/dwc/Kconfig            |   9 +
 drivers/pci/controller/dwc/Makefile           |   2 +
 .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 166 ++++++++++++++++++
 3 files changed, 177 insertions(+)
 create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c

Comments

Manivannan Sadhasivam April 22, 2023, 2:47 p.m. UTC | #1
On Tue, Apr 18, 2023 at 09:24:01PM +0900, Yoshihiro Shimoda wrote:
> Add R-Car Gen4 PCIe Endpoint support. This controller is based on
> Synopsys DesignWare PCIe.
> 
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

Small nit below...

> ---
>  drivers/pci/controller/dwc/Kconfig            |   9 +
>  drivers/pci/controller/dwc/Makefile           |   2 +
>  .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 166 ++++++++++++++++++
>  3 files changed, 177 insertions(+)
>  create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> 
> diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
> index eb90e2116e59..1b60cade8a20 100644
> --- a/drivers/pci/controller/dwc/Kconfig
> +++ b/drivers/pci/controller/dwc/Kconfig
> @@ -424,4 +424,13 @@ config PCIE_RCAR_GEN4
>  	  Say Y here if you want PCIe host controller support on R-Car Gen4 SoCs.
>  	  This uses the DesignWare core.
>  
> +config PCIE_RCAR_GEN4_EP
> +	tristate "Renesas R-Car Gen4 PCIe Endpoint controller"
> +	depends on ARCH_RENESAS || COMPILE_TEST
> +	depends on PCI_ENDPOINT
> +	select PCIE_DW_EP
> +	help
> +	  Say Y here if you want PCIe endpoint controller support on R-Car Gen4
> +	  SoCs. This uses the DesignWare core.
> +
>  endmenu
> diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
> index 486cf706b53d..0fb0bde26ac4 100644
> --- a/drivers/pci/controller/dwc/Makefile
> +++ b/drivers/pci/controller/dwc/Makefile
> @@ -28,6 +28,8 @@ obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
>  obj-$(CONFIG_PCIE_VISCONTI_HOST) += pcie-visconti.o
>  pcie-rcar-gen4-host-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-host.o
>  obj-$(CONFIG_PCIE_RCAR_GEN4) += pcie-rcar-gen4-host-drv.o
> +pcie-rcar-gen4-ep-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-ep.o
> +obj-$(CONFIG_PCIE_RCAR_GEN4_EP) += pcie-rcar-gen4-ep-drv.o
>  
>  # The following drivers are for devices that use the generic ACPI
>  # pci_root.c driver but don't support standard ECAM config access.
> diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> new file mode 100644
> index 000000000000..eb4b29c948d5
> --- /dev/null
> +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> @@ -0,0 +1,166 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * PCIe Endpoint driver for Renesas R-Car Gen4 Series SoCs
> + * Copyright (C) 2022-2023 Renesas Electronics Corporation
> + */
> +
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/pci.h>
> +#include <linux/platform_device.h>
> +
> +#include "pcie-rcar-gen4.h"
> +#include "pcie-designware.h"
> +
> +static void rcar_gen4_pcie_ep_pre_init(struct dw_pcie_ep *ep)
> +{
> +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> +	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
> +	u8 val;
> +
> +	rcar_gen4_pcie_set_device_type(rcar, false, dw->num_lanes);
> +
> +	dw_pcie_dbi_ro_wr_en(dw);
> +
> +	/* Single function */
> +	val = dw_pcie_readb_dbi(dw, PCI_HEADER_TYPE);
> +	val &= ~PCI_HEADER_TYPE_MULTI_FUNC;
> +	dw_pcie_writeb_dbi(dw, PCI_HEADER_TYPE, val);
> +
> +	dw_pcie_dbi_ro_wr_dis(dw);
> +
> +	writel(PCIEDMAINTSTSEN_INIT, rcar->base + PCIEDMAINTSTSEN);
> +}
> +
> +static void rcar_gen4_pcie_ep_deinit(struct dw_pcie_ep *ep)
> +{
> +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> +	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
> +
> +	writel(0, rcar->base + PCIEDMAINTSTSEN);
> +}
> +
> +static int rcar_gen4_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
> +				       enum pci_epc_irq_type type,
> +				       u16 interrupt_num)
> +{
> +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> +
> +	switch (type) {
> +	case PCI_EPC_IRQ_INTX:
> +		return dw_pcie_ep_raise_intx_irq(ep, func_no);
> +	case PCI_EPC_IRQ_MSI:
> +		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
> +	default:
> +		dev_err(dw->dev, "UNKNOWN IRQ type\n");

Unknown

> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static const struct pci_epc_features rcar_gen4_pcie_epc_features = {
> +	.linkup_notifier = false,
> +	.msi_capable = true,
> +	.msix_capable = false,
> +	.reserved_bar = 1 << BAR_5,
> +	.align = SZ_1M,
> +};
> +
> +static const struct pci_epc_features*
> +rcar_gen4_pcie_ep_get_features(struct dw_pcie_ep *ep)
> +{
> +	return &rcar_gen4_pcie_epc_features;
> +}
> +
> +static const struct dw_pcie_ep_ops pcie_ep_ops = {
> +	.ep_pre_init = rcar_gen4_pcie_ep_pre_init,
> +	.ep_deinit = rcar_gen4_pcie_ep_deinit,
> +	.raise_irq = rcar_gen4_pcie_ep_raise_irq,
> +	.get_features = rcar_gen4_pcie_ep_get_features,
> +};
> +
> +static int rcar_gen4_add_pcie_ep(struct rcar_gen4_pcie *rcar,
> +				 struct platform_device *pdev)
> +{
> +	struct dw_pcie_ep *ep = &rcar->dw.ep;
> +	int ret;
> +
> +	ep->ops = &pcie_ep_ops;
> +
> +	ret = dw_pcie_ep_init(ep);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to initialize endpoint\n");
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static void rcar_gen4_remove_pcie_ep(struct rcar_gen4_pcie *rcar)
> +{
> +	dw_pcie_ep_exit(&rcar->dw.ep);
> +}
> +
> +static int rcar_gen4_pcie_ep_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct rcar_gen4_pcie *rcar;
> +	int err;
> +
> +	rcar = rcar_gen4_pcie_devm_alloc(dev);
> +	if (!rcar)
> +		return -ENOMEM;
> +
> +	err = rcar_gen4_pcie_get_resources(rcar, pdev);
> +	if (err < 0) {
> +		dev_err(dev, "Failed to request resource: %d\n", err);
> +		return err;
> +	}

No need to assert/deassert reset?

- Mani
Yoshihiro Shimoda April 24, 2023, 11:37 a.m. UTC | #2
Hi Manivannan,

> From: Manivannan Sadhasivam, Sent: Saturday, April 22, 2023 11:47 PM
> 
> On Tue, Apr 18, 2023 at 09:24:01PM +0900, Yoshihiro Shimoda wrote:
> > Add R-Car Gen4 PCIe Endpoint support. This controller is based on
> > Synopsys DesignWare PCIe.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> 
> Small nit below...
> 
> > ---
> >  drivers/pci/controller/dwc/Kconfig            |   9 +
> >  drivers/pci/controller/dwc/Makefile           |   2 +
> >  .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 166 ++++++++++++++++++
> >  3 files changed, 177 insertions(+)
> >  create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> >
> > diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
> > index eb90e2116e59..1b60cade8a20 100644
> > --- a/drivers/pci/controller/dwc/Kconfig
> > +++ b/drivers/pci/controller/dwc/Kconfig
> > @@ -424,4 +424,13 @@ config PCIE_RCAR_GEN4
> >  	  Say Y here if you want PCIe host controller support on R-Car Gen4 SoCs.
> >  	  This uses the DesignWare core.
> >
> > +config PCIE_RCAR_GEN4_EP
> > +	tristate "Renesas R-Car Gen4 PCIe Endpoint controller"
> > +	depends on ARCH_RENESAS || COMPILE_TEST
> > +	depends on PCI_ENDPOINT
> > +	select PCIE_DW_EP
> > +	help
> > +	  Say Y here if you want PCIe endpoint controller support on R-Car Gen4
> > +	  SoCs. This uses the DesignWare core.
> > +
> >  endmenu
> > diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
> > index 486cf706b53d..0fb0bde26ac4 100644
> > --- a/drivers/pci/controller/dwc/Makefile
> > +++ b/drivers/pci/controller/dwc/Makefile
> > @@ -28,6 +28,8 @@ obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
> >  obj-$(CONFIG_PCIE_VISCONTI_HOST) += pcie-visconti.o
> >  pcie-rcar-gen4-host-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-host.o
> >  obj-$(CONFIG_PCIE_RCAR_GEN4) += pcie-rcar-gen4-host-drv.o
> > +pcie-rcar-gen4-ep-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-ep.o
> > +obj-$(CONFIG_PCIE_RCAR_GEN4_EP) += pcie-rcar-gen4-ep-drv.o
> >
> >  # The following drivers are for devices that use the generic ACPI
> >  # pci_root.c driver but don't support standard ECAM config access.
> > diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> > new file mode 100644
> > index 000000000000..eb4b29c948d5
> > --- /dev/null
> > +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
> > @@ -0,0 +1,166 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * PCIe Endpoint driver for Renesas R-Car Gen4 Series SoCs
> > + * Copyright (C) 2022-2023 Renesas Electronics Corporation
> > + */
> > +
> > +#include <linux/interrupt.h>
> > +#include <linux/module.h>
> > +#include <linux/of_device.h>
> > +#include <linux/pci.h>
> > +#include <linux/platform_device.h>
> > +
> > +#include "pcie-rcar-gen4.h"
> > +#include "pcie-designware.h"
> > +
> > +static void rcar_gen4_pcie_ep_pre_init(struct dw_pcie_ep *ep)
> > +{
> > +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> > +	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
> > +	u8 val;
> > +
> > +	rcar_gen4_pcie_set_device_type(rcar, false, dw->num_lanes);
> > +
> > +	dw_pcie_dbi_ro_wr_en(dw);
> > +
> > +	/* Single function */
> > +	val = dw_pcie_readb_dbi(dw, PCI_HEADER_TYPE);
> > +	val &= ~PCI_HEADER_TYPE_MULTI_FUNC;
> > +	dw_pcie_writeb_dbi(dw, PCI_HEADER_TYPE, val);
> > +
> > +	dw_pcie_dbi_ro_wr_dis(dw);
> > +
> > +	writel(PCIEDMAINTSTSEN_INIT, rcar->base + PCIEDMAINTSTSEN);
> > +}
> > +
> > +static void rcar_gen4_pcie_ep_deinit(struct dw_pcie_ep *ep)
> > +{
> > +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> > +	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
> > +
> > +	writel(0, rcar->base + PCIEDMAINTSTSEN);
> > +}
> > +
> > +static int rcar_gen4_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
> > +				       enum pci_epc_irq_type type,
> > +				       u16 interrupt_num)
> > +{
> > +	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
> > +
> > +	switch (type) {
> > +	case PCI_EPC_IRQ_INTX:
> > +		return dw_pcie_ep_raise_intx_irq(ep, func_no);
> > +	case PCI_EPC_IRQ_MSI:
> > +		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
> > +	default:
> > +		dev_err(dw->dev, "UNKNOWN IRQ type\n");
> 
> Unknown

I got it. I'll fix it on v13.

> > +		return -EINVAL;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +static const struct pci_epc_features rcar_gen4_pcie_epc_features = {
> > +	.linkup_notifier = false,
> > +	.msi_capable = true,
> > +	.msix_capable = false,
> > +	.reserved_bar = 1 << BAR_5,
> > +	.align = SZ_1M,
> > +};
> > +
> > +static const struct pci_epc_features*
> > +rcar_gen4_pcie_ep_get_features(struct dw_pcie_ep *ep)
> > +{
> > +	return &rcar_gen4_pcie_epc_features;
> > +}
> > +
> > +static const struct dw_pcie_ep_ops pcie_ep_ops = {
> > +	.ep_pre_init = rcar_gen4_pcie_ep_pre_init,
> > +	.ep_deinit = rcar_gen4_pcie_ep_deinit,
> > +	.raise_irq = rcar_gen4_pcie_ep_raise_irq,
> > +	.get_features = rcar_gen4_pcie_ep_get_features,
> > +};
> > +
> > +static int rcar_gen4_add_pcie_ep(struct rcar_gen4_pcie *rcar,
> > +				 struct platform_device *pdev)
> > +{
> > +	struct dw_pcie_ep *ep = &rcar->dw.ep;
> > +	int ret;
> > +
> > +	ep->ops = &pcie_ep_ops;
> > +
> > +	ret = dw_pcie_ep_init(ep);
> > +	if (ret) {
> > +		dev_err(&pdev->dev, "failed to initialize endpoint\n");
> > +		return ret;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +static void rcar_gen4_remove_pcie_ep(struct rcar_gen4_pcie *rcar)
> > +{
> > +	dw_pcie_ep_exit(&rcar->dw.ep);
> > +}
> > +
> > +static int rcar_gen4_pcie_ep_probe(struct platform_device *pdev)
> > +{
> > +	struct device *dev = &pdev->dev;
> > +	struct rcar_gen4_pcie *rcar;
> > +	int err;
> > +
> > +	rcar = rcar_gen4_pcie_devm_alloc(dev);
> > +	if (!rcar)
> > +		return -ENOMEM;
> > +
> > +	err = rcar_gen4_pcie_get_resources(rcar, pdev);
> > +	if (err < 0) {
> > +		dev_err(dev, "Failed to request resource: %d\n", err);
> > +		return err;
> > +	}
> 
> No need to assert/deassert reset?

I assumed no need to assert reset, and deasserting will be issued on
rcar_gen4_pcie_set_device_type() from rcar_gen4_pcie_ep_pre_init().

Best regards,
Yoshihiro Shimoda

> - Mani
> 
> --
> மணிவண்ணன் சதாசிவம்
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index eb90e2116e59..1b60cade8a20 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -424,4 +424,13 @@  config PCIE_RCAR_GEN4
 	  Say Y here if you want PCIe host controller support on R-Car Gen4 SoCs.
 	  This uses the DesignWare core.
 
+config PCIE_RCAR_GEN4_EP
+	tristate "Renesas R-Car Gen4 PCIe Endpoint controller"
+	depends on ARCH_RENESAS || COMPILE_TEST
+	depends on PCI_ENDPOINT
+	select PCIE_DW_EP
+	help
+	  Say Y here if you want PCIe endpoint controller support on R-Car Gen4
+	  SoCs. This uses the DesignWare core.
+
 endmenu
diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
index 486cf706b53d..0fb0bde26ac4 100644
--- a/drivers/pci/controller/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
@@ -28,6 +28,8 @@  obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
 obj-$(CONFIG_PCIE_VISCONTI_HOST) += pcie-visconti.o
 pcie-rcar-gen4-host-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-host.o
 obj-$(CONFIG_PCIE_RCAR_GEN4) += pcie-rcar-gen4-host-drv.o
+pcie-rcar-gen4-ep-drv-objs := pcie-rcar-gen4.o pcie-rcar-gen4-ep.o
+obj-$(CONFIG_PCIE_RCAR_GEN4_EP) += pcie-rcar-gen4-ep-drv.o
 
 # The following drivers are for devices that use the generic ACPI
 # pci_root.c driver but don't support standard ECAM config access.
diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
new file mode 100644
index 000000000000..eb4b29c948d5
--- /dev/null
+++ b/drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
@@ -0,0 +1,166 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * PCIe Endpoint driver for Renesas R-Car Gen4 Series SoCs
+ * Copyright (C) 2022-2023 Renesas Electronics Corporation
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+
+#include "pcie-rcar-gen4.h"
+#include "pcie-designware.h"
+
+static void rcar_gen4_pcie_ep_pre_init(struct dw_pcie_ep *ep)
+{
+	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
+	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
+	u8 val;
+
+	rcar_gen4_pcie_set_device_type(rcar, false, dw->num_lanes);
+
+	dw_pcie_dbi_ro_wr_en(dw);
+
+	/* Single function */
+	val = dw_pcie_readb_dbi(dw, PCI_HEADER_TYPE);
+	val &= ~PCI_HEADER_TYPE_MULTI_FUNC;
+	dw_pcie_writeb_dbi(dw, PCI_HEADER_TYPE, val);
+
+	dw_pcie_dbi_ro_wr_dis(dw);
+
+	writel(PCIEDMAINTSTSEN_INIT, rcar->base + PCIEDMAINTSTSEN);
+}
+
+static void rcar_gen4_pcie_ep_deinit(struct dw_pcie_ep *ep)
+{
+	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
+	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
+
+	writel(0, rcar->base + PCIEDMAINTSTSEN);
+}
+
+static int rcar_gen4_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
+				       enum pci_epc_irq_type type,
+				       u16 interrupt_num)
+{
+	struct dw_pcie *dw = to_dw_pcie_from_ep(ep);
+
+	switch (type) {
+	case PCI_EPC_IRQ_INTX:
+		return dw_pcie_ep_raise_intx_irq(ep, func_no);
+	case PCI_EPC_IRQ_MSI:
+		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
+	default:
+		dev_err(dw->dev, "UNKNOWN IRQ type\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct pci_epc_features rcar_gen4_pcie_epc_features = {
+	.linkup_notifier = false,
+	.msi_capable = true,
+	.msix_capable = false,
+	.reserved_bar = 1 << BAR_5,
+	.align = SZ_1M,
+};
+
+static const struct pci_epc_features*
+rcar_gen4_pcie_ep_get_features(struct dw_pcie_ep *ep)
+{
+	return &rcar_gen4_pcie_epc_features;
+}
+
+static const struct dw_pcie_ep_ops pcie_ep_ops = {
+	.ep_pre_init = rcar_gen4_pcie_ep_pre_init,
+	.ep_deinit = rcar_gen4_pcie_ep_deinit,
+	.raise_irq = rcar_gen4_pcie_ep_raise_irq,
+	.get_features = rcar_gen4_pcie_ep_get_features,
+};
+
+static int rcar_gen4_add_pcie_ep(struct rcar_gen4_pcie *rcar,
+				 struct platform_device *pdev)
+{
+	struct dw_pcie_ep *ep = &rcar->dw.ep;
+	int ret;
+
+	ep->ops = &pcie_ep_ops;
+
+	ret = dw_pcie_ep_init(ep);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to initialize endpoint\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static void rcar_gen4_remove_pcie_ep(struct rcar_gen4_pcie *rcar)
+{
+	dw_pcie_ep_exit(&rcar->dw.ep);
+}
+
+static int rcar_gen4_pcie_ep_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rcar_gen4_pcie *rcar;
+	int err;
+
+	rcar = rcar_gen4_pcie_devm_alloc(dev);
+	if (!rcar)
+		return -ENOMEM;
+
+	err = rcar_gen4_pcie_get_resources(rcar, pdev);
+	if (err < 0) {
+		dev_err(dev, "Failed to request resource: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, rcar);
+
+	err = rcar_gen4_pcie_prepare(rcar);
+	if (err < 0)
+		return err;
+
+	err = rcar_gen4_add_pcie_ep(rcar, pdev);
+	if (err < 0)
+		goto err_add;
+
+	return 0;
+
+err_add:
+	rcar_gen4_pcie_unprepare(rcar);
+
+	return err;
+}
+
+static int rcar_gen4_pcie_ep_remove(struct platform_device *pdev)
+{
+	struct rcar_gen4_pcie *rcar = platform_get_drvdata(pdev);
+
+	rcar_gen4_remove_pcie_ep(rcar);
+	rcar_gen4_pcie_unprepare(rcar);
+
+	return 0;
+}
+
+static const struct of_device_id rcar_gen4_pcie_of_match[] = {
+	{ .compatible = "renesas,rcar-gen4-pcie-ep", },
+	{},
+};
+
+static struct platform_driver rcar_gen4_pcie_ep_driver = {
+	.driver = {
+		.name = "pcie-rcar-gen4-ep",
+		.of_match_table = rcar_gen4_pcie_of_match,
+	},
+	.probe = rcar_gen4_pcie_ep_probe,
+	.remove = rcar_gen4_pcie_ep_remove,
+};
+module_platform_driver(rcar_gen4_pcie_ep_driver);
+
+MODULE_DESCRIPTION("Renesas R-Car Gen4 PCIe endpoint controller driver");
+MODULE_LICENSE("GPL");