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1// SPDX-License-Identifier: GPL-2.0+2// PCI interface driver for Loongson SPI Support3// Copyright (C) 2023 Loongson Technology Corporation Limited4 5#include <linux/mod_devicetable.h>6#include <linux/pci.h>7 8#include "spi-loongson.h"9 10static int loongson_spi_pci_register(struct pci_dev *pdev,11 const struct pci_device_id *ent)12{13 int ret;14 void __iomem *reg_base;15 struct device *dev = &pdev->dev;16 int pci_bar = 0;17 18 ret = pcim_enable_device(pdev);19 if (ret < 0)20 return dev_err_probe(dev, ret, "cannot enable pci device\n");21 22 ret = pcim_iomap_regions(pdev, BIT(pci_bar), pci_name(pdev));23 if (ret)24 return dev_err_probe(dev, ret, "failed to request and remap memory\n");25 26 reg_base = pcim_iomap_table(pdev)[pci_bar];27 28 ret = loongson_spi_init_controller(dev, reg_base);29 if (ret)30 return dev_err_probe(dev, ret, "failed to initialize controller\n");31 32 return 0;33}34 35static struct pci_device_id loongson_spi_devices[] = {36 { PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a0b) },37 { PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a1b) },38 { }39};40MODULE_DEVICE_TABLE(pci, loongson_spi_devices);41 42static struct pci_driver loongson_spi_pci_driver = {43 .name = "loongson-spi-pci",44 .id_table = loongson_spi_devices,45 .probe = loongson_spi_pci_register,46 .driver = {47 .bus = &pci_bus_type,48 .pm = &loongson_spi_dev_pm_ops,49 },50};51module_pci_driver(loongson_spi_pci_driver);52 53MODULE_DESCRIPTION("Loongson spi pci driver");54MODULE_LICENSE("GPL");55MODULE_IMPORT_NS(SPI_LOONGSON_CORE);56