On Mon, Oct 23, 2017 at 07:17:50PM +0800, Shawn Guo wrote:
> From: Jianguo Sun <sunjianguo1@xxxxxxxxxx>
>
> Add PCIe controller driver for HiSilicon STB SoCs,
> the controller is based on the DesignWare PCIe core.
>
> Signed-off-by: Jianguo Sun <sunjianguo1@xxxxxxxxxx>
> Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
Applied to pci/host-hisi for v4.15, thanks!
> ---
> Changes for v2:
> - Add a MAINTAINERS entry for the driver.
> - Unify the spell of DesignWare and PCIe in text and messages.
> - Use "MSI IRQ" in message output.
> - Fix the indentation of function parameters on newline.
> - Fix interrupt-map for legacy interrupts in bindings example.
>
> .../bindings/pci/hisilicon-histb-pcie.txt | 68 +++
> MAINTAINERS | 8 +
> drivers/pci/dwc/Kconfig | 10 +
> drivers/pci/dwc/Makefile | 1 +
> drivers/pci/dwc/pcie-histb.c | 469 +++++++++++++++++++++
> 5 files changed, 556 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
> create mode 100644 drivers/pci/dwc/pcie-histb.c
>
> diff --git a/Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt b/Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
> new file mode 100644
> index 000000000000..e4d79d03214b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
> @@ -0,0 +1,68 @@
> +HiSilicon STB PCIe host bridge DT description
> +
> +HiSilicon STB PCIe host controller is based on DesignWare PCIe core.
> +It shares common functions with PCIe DesignWare core driver and inherits
> +common properties defined in
> +Documentation/devicetree/bindings/pci/designware-pcie.txt.
> +
> +Additional properties are described here:
> +
> +Required properties
> +- compatible: Should be one of the following strings:
> + "hisilicon,hi3798cv200-pcie"
> +- reg: Should contain sysctl, rc_dbi, config registers location and length.
> +- reg-names: Must include the following entries:
> + "control": control registers of PCIe controller;
> + "rc-dbi": configuration space of PCIe controller;
> + "config": configuration transaction space of PCIe controller.
> +- bus-range: PCI bus numbers covered.
> +- interrupts: MSI interrupt.
> +- interrupt-names: Must include "msi" entries.
> +- clocks: List of phandle and clock specifier pairs as listed in clock-names
> + property.
> +- clock-name: Must include the following entries:
> + "aux": auxiliary gate clock;
> + "pipe": pipe gate clock;
> + "sys": sys gate clock;
> + "bus": bus gate clock.
> +- resets: List of phandle and reset specifier pairs as listed in reset-names
> + property.
> +- reset-names: Must include the following entries:
> + "soft": soft reset;
> + "sys": sys reset;
> + "bus": bus reset.
> +
> +Optional properties:
> +- reset-gpios: The gpio to generate PCIe PERST# assert and deassert signal.
> +- phys: List of phandle and phy mode specifier, should be 0.
> +- phy-names: Must be "phy".
> +
> +Example:
> + pcie@f9860000 {
> + compatible = "hisilicon,hi3798cv200-pcie";
> + reg = <0xf9860000 0x1000>,
> + <0xf0000000 0x2000>,
> + <0xf2000000 0x01000000>;
> + reg-names = "control", "rc-dbi", "config";
> + #address-cells = <3>;
> + #size-cells = <2>;
> + device_type = "pci";
> + bus-range = <0 15>;
> + num-lanes = <1>;
> + ranges=<0x81000000 0 0 0xf4000000 0 0x00010000
> + 0x82000000 0 0xf3000000 0xf3000000 0 0x01000000>;
> + interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "msi";
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 0>;
> + interrupt-map = <0 0 0 0 &gic GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&crg PCIE_AUX_CLK>,
> + <&crg PCIE_PIPE_CLK>,
> + <&crg PCIE_SYS_CLK>,
> + <&crg PCIE_BUS_CLK>;
> + clock-names = "aux", "pipe", "sys", "bus";
> + resets = <&crg 0x18c 6>, <&crg 0x18c 5>, <&crg 0x18c 4>;
> + reset-names = "soft", "sys", "bus";
> + phys = <&combphy1 PHY_TYPE_PCIE>;
> + phy-names = "phy";
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a74227ad082e..2520bf02bc12 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -10487,6 +10487,14 @@ S: Maintained
> F: Documentation/devicetree/bindings/pci/pcie-kirin.txt
> F: drivers/pci/dwc/pcie-kirin.c
>
> +PCIE DRIVER FOR HISILICON STB
> +M: Jianguo Sun <sunjianguo1@xxxxxxxxxx>
> +M: Shawn Guo <shawn.guo@xxxxxxxxxx>
> +L: linux-pci@xxxxxxxxxxxxxxx
> +S: Maintained
> +F: Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
> +F: drivers/pci/dwc/pcie-histb.c
> +
> PCIE DRIVER FOR MEDIATEK
> M: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
> L: linux-pci@xxxxxxxxxxxxxxx
> diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/dwc/Kconfig
> index 22ec82fcdea2..113e09440f85 100644
> --- a/drivers/pci/dwc/Kconfig
> +++ b/drivers/pci/dwc/Kconfig
> @@ -169,4 +169,14 @@ config PCIE_KIRIN
> Say Y here if you want PCIe controller support
> on HiSilicon Kirin series SoCs.
>
> +config PCIE_HISI_STB
> + bool "HiSilicon STB SoCs PCIe controllers"
> + depends on ARCH_HISI
> + depends on PCI
> + depends on PCI_MSI_IRQ_DOMAIN
> + select PCIEPORTBUS
> + select PCIE_DW_HOST
> + help
> + Say Y here if you want PCIe controller support on HiSilicon STB SoCs
> +
> endmenu
> diff --git a/drivers/pci/dwc/Makefile b/drivers/pci/dwc/Makefile
> index c61be9738cce..54f56f6e9236 100644
> --- a/drivers/pci/dwc/Makefile
> +++ b/drivers/pci/dwc/Makefile
> @@ -14,6 +14,7 @@ obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
> obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o
> obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o
> obj-$(CONFIG_PCIE_KIRIN) += pcie-kirin.o
> +obj-$(CONFIG_PCIE_HISI_STB) += pcie-histb.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/dwc/pcie-histb.c b/drivers/pci/dwc/pcie-histb.c
> new file mode 100644
> index 000000000000..d41ed01e3415
> --- /dev/null
> +++ b/drivers/pci/dwc/pcie-histb.c
> @@ -0,0 +1,469 @@
> +/*
> + * PCIe host controller driver for HiSilicon STB SoCs
> + *
> + * Copyright (C) 2016-2017 HiSilicon Co., Ltd. http://www.hisilicon.com
> + *
> + * Authors: Ruqiang Ju <juruqiang@xxxxxxxxxxxxx>
> + * Jianguo Sun <sunjianguo1@xxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_gpio.h>
> +#include <linux/pci.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/resource.h>
> +#include <linux/reset.h>
> +
> +#include "pcie-designware.h"
> +
> +#define to_histb_pcie(x) dev_get_drvdata((x)->dev)
> +
> +#define PCIE_SYS_CTRL0 0x0000
> +#define PCIE_SYS_CTRL1 0x0004
> +#define PCIE_SYS_CTRL7 0x001C
> +#define PCIE_SYS_CTRL13 0x0034
> +#define PCIE_SYS_CTRL15 0x003c
> +#define PCIE_SYS_CTRL16 0x0040
> +#define PCIE_SYS_CTRL17 0x0044
> +
> +#define PCIE_SYS_STAT0 0x0100
> +#define PCIE_SYS_STAT4 0x0110
> +
> +#define PCIE_RDLH_LINK_UP BIT(5)
> +#define PCIE_XMLH_LINK_UP BIT(15)
> +#define PCIE_ELBI_SLV_DBI_ENABLE BIT(21)
> +#define PCIE_APP_LTSSM_ENABLE BIT(11)
> +
> +#define PCIE_DEVICE_TYPE_MASK GENMASK(31, 28)
> +#define PCIE_WM_EP 0
> +#define PCIE_WM_LEGACY BIT(1)
> +#define PCIE_WM_RC BIT(30)
> +
> +#define PCIE_LTSSM_STATE_MASK GENMASK(5, 0)
> +#define PCIE_LTSSM_STATE_ACTIVE 0x11
> +
> +struct histb_pcie {
> + struct dw_pcie *pci;
> + struct clk *aux_clk;
> + struct clk *pipe_clk;
> + struct clk *sys_clk;
> + struct clk *bus_clk;
> + struct phy *phy;
> + struct reset_control *soft_reset;
> + struct reset_control *sys_reset;
> + struct reset_control *bus_reset;
> + void __iomem *ctrl;
> + int reset_gpio;
> +};
> +
> +static u32 histb_pcie_readl(struct histb_pcie *histb_pcie, u32 reg)
> +{
> + return readl(histb_pcie->ctrl + reg);
> +}
> +
> +static void histb_pcie_writel(struct histb_pcie *histb_pcie, u32 reg, u32 val)
> +{
> + writel(val, histb_pcie->ctrl + reg);
> +}
> +
> +static void histb_pcie_dbi_w_mode(struct pcie_port *pp, bool enable)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct histb_pcie *hipcie = to_histb_pcie(pci);
> + u32 val;
> +
> + val = histb_pcie_readl(hipcie, PCIE_SYS_CTRL0);
> + if (enable)
> + val |= PCIE_ELBI_SLV_DBI_ENABLE;
> + else
> + val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
> + histb_pcie_writel(hipcie, PCIE_SYS_CTRL0, val);
> +}
> +
> +static void histb_pcie_dbi_r_mode(struct pcie_port *pp, bool enable)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct histb_pcie *hipcie = to_histb_pcie(pci);
> + u32 val;
> +
> + val = histb_pcie_readl(hipcie, PCIE_SYS_CTRL1);
> + if (enable)
> + val |= PCIE_ELBI_SLV_DBI_ENABLE;
> + else
> + val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
> + histb_pcie_writel(hipcie, PCIE_SYS_CTRL1, val);
> +}
> +
> +static u32 histb_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base,
> + u32 reg, size_t size)
> +{
> + u32 val;
> +
> + histb_pcie_dbi_r_mode(&pci->pp, true);
> + dw_pcie_read(base + reg, size, &val);
> + histb_pcie_dbi_r_mode(&pci->pp, false);
> +
> + return val;
> +}
> +
> +static void histb_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base,
> + u32 reg, size_t size, u32 val)
> +{
> + histb_pcie_dbi_w_mode(&pci->pp, true);
> + dw_pcie_write(base + reg, size, val);
> + histb_pcie_dbi_w_mode(&pci->pp, false);
> +}
> +
> +static int histb_pcie_rd_own_conf(struct pcie_port *pp, int where,
> + int size, u32 *val)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + int ret;
> +
> + histb_pcie_dbi_r_mode(pp, true);
> + ret = dw_pcie_read(pci->dbi_base + where, size, val);
> + histb_pcie_dbi_r_mode(pp, false);
> +
> + return ret;
> +}
> +
> +static int histb_pcie_wr_own_conf(struct pcie_port *pp, int where,
> + int size, u32 val)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + int ret;
> +
> + histb_pcie_dbi_w_mode(pp, true);
> + ret = dw_pcie_write(pci->dbi_base + where, size, val);
> + histb_pcie_dbi_w_mode(pp, false);
> +
> + return ret;
> +}
> +
> +static int histb_pcie_link_up(struct dw_pcie *pci)
> +{
> + struct histb_pcie *hipcie = to_histb_pcie(pci);
> + u32 regval;
> + u32 status;
> +
> + regval = histb_pcie_readl(hipcie, PCIE_SYS_STAT0);
> + status = histb_pcie_readl(hipcie, PCIE_SYS_STAT4);
> + status &= PCIE_LTSSM_STATE_MASK;
> + if ((regval & PCIE_XMLH_LINK_UP) && (regval & PCIE_RDLH_LINK_UP) &&
> + (status == PCIE_LTSSM_STATE_ACTIVE))
> + return 1;
> +
> + return 0;
> +}
> +
> +static int histb_pcie_establish_link(struct pcie_port *pp)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct histb_pcie *hipcie = to_histb_pcie(pci);
> + u32 regval;
> +
> + if (dw_pcie_link_up(pci)) {
> + dev_info(pci->dev, "Link already up\n");
> + return 0;
> + }
> +
> + /* PCIe RC work mode */
> + regval = histb_pcie_readl(hipcie, PCIE_SYS_CTRL0);
> + regval &= ~PCIE_DEVICE_TYPE_MASK;
> + regval |= PCIE_WM_RC;
> + histb_pcie_writel(hipcie, PCIE_SYS_CTRL0, regval);
> +
> + /* setup root complex */
> + dw_pcie_setup_rc(pp);
> +
> + /* assert LTSSM enable */
> + regval = histb_pcie_readl(hipcie, PCIE_SYS_CTRL7);
> + regval |= PCIE_APP_LTSSM_ENABLE;
> + histb_pcie_writel(hipcie, PCIE_SYS_CTRL7, regval);
> +
> + return dw_pcie_wait_for_link(pci);
> +}
> +
> +static int histb_pcie_host_init(struct pcie_port *pp)
> +{
> + histb_pcie_establish_link(pp);
> +
> + if (IS_ENABLED(CONFIG_PCI_MSI))
> + dw_pcie_msi_init(pp);
> +
> + return 0;
> +}
> +
> +static struct dw_pcie_host_ops histb_pcie_host_ops = {
> + .rd_own_conf = histb_pcie_rd_own_conf,
> + .wr_own_conf = histb_pcie_wr_own_conf,
> + .host_init = histb_pcie_host_init,
> +};
> +
> +static irqreturn_t histb_pcie_msi_irq_handler(int irq, void *arg)
> +{
> + struct pcie_port *pp = arg;
> +
> + return dw_handle_msi_irq(pp);
> +}
> +
> +static void histb_pcie_host_disable(struct histb_pcie *hipcie)
> +{
> + reset_control_assert(hipcie->soft_reset);
> + reset_control_assert(hipcie->sys_reset);
> + reset_control_assert(hipcie->bus_reset);
> +
> + clk_disable_unprepare(hipcie->aux_clk);
> + clk_disable_unprepare(hipcie->pipe_clk);
> + clk_disable_unprepare(hipcie->sys_clk);
> + clk_disable_unprepare(hipcie->bus_clk);
> +
> + if (gpio_is_valid(hipcie->reset_gpio))
> + gpio_set_value_cansleep(hipcie->reset_gpio, 0);
> +}
> +
> +static int histb_pcie_host_enable(struct pcie_port *pp)
> +{
> + struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct histb_pcie *hipcie = to_histb_pcie(pci);
> + struct device *dev = pci->dev;
> + int ret;
> +
> + /* power on PCIe device if have */
> + if (gpio_is_valid(hipcie->reset_gpio))
> + gpio_set_value_cansleep(hipcie->reset_gpio, 1);
> +
> + ret = clk_prepare_enable(hipcie->bus_clk);
> + if (ret) {
> + dev_err(dev, "cannot prepare/enable bus clk\n");
> + goto err_bus_clk;
> + }
> +
> + ret = clk_prepare_enable(hipcie->sys_clk);
> + if (ret) {
> + dev_err(dev, "cannot prepare/enable sys clk\n");
> + goto err_sys_clk;
> + }
> +
> + ret = clk_prepare_enable(hipcie->pipe_clk);
> + if (ret) {
> + dev_err(dev, "cannot prepare/enable pipe clk\n");
> + goto err_pipe_clk;
> + }
> +
> + ret = clk_prepare_enable(hipcie->aux_clk);
> + if (ret) {
> + dev_err(dev, "cannot prepare/enable aux clk\n");
> + goto err_aux_clk;
> + }
> +
> + reset_control_assert(hipcie->soft_reset);
> + reset_control_deassert(hipcie->soft_reset);
> +
> + reset_control_assert(hipcie->sys_reset);
> + reset_control_deassert(hipcie->sys_reset);
> +
> + reset_control_assert(hipcie->bus_reset);
> + reset_control_deassert(hipcie->bus_reset);
> +
> + return 0;
> +
> +err_aux_clk:
> + clk_disable_unprepare(hipcie->aux_clk);
> +err_pipe_clk:
> + clk_disable_unprepare(hipcie->pipe_clk);
> +err_sys_clk:
> + clk_disable_unprepare(hipcie->sys_clk);
> +err_bus_clk:
> + clk_disable_unprepare(hipcie->bus_clk);
> +
> + return ret;
> +}
> +
> +static const struct dw_pcie_ops dw_pcie_ops = {
> + .read_dbi = histb_pcie_read_dbi,
> + .write_dbi = histb_pcie_write_dbi,
> + .link_up = histb_pcie_link_up,
> +};
> +
> +static int histb_pcie_probe(struct platform_device *pdev)
> +{
> + struct histb_pcie *hipcie;
> + struct dw_pcie *pci;
> + struct pcie_port *pp;
> + struct resource *res;
> + struct device_node *np = pdev->dev.of_node;
> + struct device *dev = &pdev->dev;
> + enum of_gpio_flags of_flags;
> + unsigned long flag = GPIOF_DIR_OUT;
> + int ret;
> +
> + hipcie = devm_kzalloc(dev, sizeof(*hipcie), GFP_KERNEL);
> + if (!hipcie)
> + return -ENOMEM;
> +
> + pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
> + if (!pci)
> + return -ENOMEM;
> +
> + hipcie->pci = pci;
> + pp = &pci->pp;
> + pci->dev = dev;
> + pci->ops = &dw_pcie_ops;
> +
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "control");
> + hipcie->ctrl = devm_ioremap_resource(dev, res);
> + if (IS_ERR(hipcie->ctrl)) {
> + dev_err(dev, "cannot get control reg base\n");
> + return PTR_ERR(hipcie->ctrl);
> + }
> +
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rc-dbi");
> + pci->dbi_base = devm_ioremap_resource(dev, res);
> + if (IS_ERR(pci->dbi_base)) {
> + dev_err(dev, "cannot get rc-dbi base\n");
> + return PTR_ERR(pci->dbi_base);
> + }
> +
> + hipcie->reset_gpio = of_get_named_gpio_flags(np,
> + "reset-gpios", 0, &of_flags);
> + if (of_flags & OF_GPIO_ACTIVE_LOW)
> + flag |= GPIOF_ACTIVE_LOW;
> + if (gpio_is_valid(hipcie->reset_gpio)) {
> + ret = devm_gpio_request_one(dev, hipcie->reset_gpio,
> + flag, "PCIe device power control");
> + if (ret) {
> + dev_err(dev, "unable to request gpio\n");
> + return ret;
> + }
> + }
> +
> + hipcie->aux_clk = devm_clk_get(dev, "aux");
> + if (IS_ERR(hipcie->aux_clk)) {
> + dev_err(dev, "Failed to get PCIe aux clk\n");
> + return PTR_ERR(hipcie->aux_clk);
> + }
> +
> + hipcie->pipe_clk = devm_clk_get(dev, "pipe");
> + if (IS_ERR(hipcie->pipe_clk)) {
> + dev_err(dev, "Failed to get PCIe pipe clk\n");
> + return PTR_ERR(hipcie->pipe_clk);
> + }
> +
> + hipcie->sys_clk = devm_clk_get(dev, "sys");
> + if (IS_ERR(hipcie->sys_clk)) {
> + dev_err(dev, "Failed to get PCIEe sys clk\n");
> + return PTR_ERR(hipcie->sys_clk);
> + }
> +
> + hipcie->bus_clk = devm_clk_get(dev, "bus");
> + if (IS_ERR(hipcie->bus_clk)) {
> + dev_err(dev, "Failed to get PCIe bus clk\n");
> + return PTR_ERR(hipcie->bus_clk);
> + }
> +
> + hipcie->soft_reset = devm_reset_control_get(dev, "soft");
> + if (IS_ERR(hipcie->soft_reset)) {
> + dev_err(dev, "couldn't get soft reset\n");
> + return PTR_ERR(hipcie->soft_reset);
> + }
> +
> + hipcie->sys_reset = devm_reset_control_get(dev, "sys");
> + if (IS_ERR(hipcie->sys_reset)) {
> + dev_err(dev, "couldn't get sys reset\n");
> + return PTR_ERR(hipcie->sys_reset);
> + }
> +
> + hipcie->bus_reset = devm_reset_control_get(dev, "bus");
> + if (IS_ERR(hipcie->bus_reset)) {
> + dev_err(dev, "couldn't get bus reset\n");
> + return PTR_ERR(hipcie->bus_reset);
> + }
> +
> + if (IS_ENABLED(CONFIG_PCI_MSI)) {
> + pp->msi_irq = platform_get_irq_byname(pdev, "msi");
> + if (pp->msi_irq < 0) {
> + dev_err(dev, "Failed to get MSI IRQ\n");
> + return pp->msi_irq;
> + }
> +
> + ret = devm_request_irq(dev, pp->msi_irq,
> + histb_pcie_msi_irq_handler,
> + IRQF_SHARED, "histb-pcie-msi", pp);
> + if (ret) {
> + dev_err(dev, "cannot request MSI IRQ\n");
> + return ret;
> + }
> + }
> +
> + hipcie->phy = devm_phy_get(dev, "phy");
> + if (IS_ERR(hipcie->phy)) {
> + dev_info(dev, "no pcie-phy found\n");
> + hipcie->phy = NULL;
> + /* fall through here!
> + * if no pcie-phy found, phy init
> + * should be done under boot!
> + */
> + } else {
> + phy_init(hipcie->phy);
> + }
> +
> + pp->root_bus_nr = -1;
> + pp->ops = &histb_pcie_host_ops;
> +
> + platform_set_drvdata(pdev, hipcie);
> +
> + ret = histb_pcie_host_enable(pp);
> + if (ret) {
> + dev_err(dev, "failed to enable host\n");
> + return ret;
> + }
> +
> + ret = dw_pcie_host_init(pp);
> + if (ret) {
> + dev_err(dev, "failed to initialize host\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int histb_pcie_remove(struct platform_device *pdev)
> +{
> + struct histb_pcie *hipcie = platform_get_drvdata(pdev);
> +
> + histb_pcie_host_disable(hipcie);
> +
> + if (hipcie->phy)
> + phy_exit(hipcie->phy);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id histb_pcie_of_match[] = {
> + { .compatible = "hisilicon,hi3798cv200-pcie", },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, histb_pcie_of_match);
> +
> +static struct platform_driver histb_pcie_platform_driver = {
> + .probe = histb_pcie_probe,
> + .remove = histb_pcie_remove,
> + .driver = {
> + .name = "histb-pcie",
> + .of_match_table = histb_pcie_of_match,
> + },
> +};
> +module_platform_driver(histb_pcie_platform_driver);
> +
> +MODULE_DESCRIPTION("HiSilicon STB PCIe host controller driver");
> +MODULE_LICENSE("GPL v2");
> --
> 1.9.1
>
>
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