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// SPDX-License-Identifier: GPL-2.0+
// PCI interface driver for Loongson SPI Support
// Copyright (C) 2023 Loongson Technology Corporation Limited
#include <linux/mod_devicetable.h>
#include <linux/pci.h>
#include "spi-loongson.h"
static int loongson_spi_pci_register(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int ret;
void __iomem *reg_base;
struct device *dev = &pdev->dev;
int pci_bar = 0;
ret = pcim_enable_device(pdev);
if (ret < 0)
return dev_err_probe(dev, ret, "cannot enable pci device\n");
ret = pcim_iomap_regions(pdev, BIT(pci_bar), pci_name(pdev));
if (ret)
return dev_err_probe(dev, ret, "failed to request and remap memory\n");
reg_base = pcim_iomap_table(pdev)[pci_bar];
ret = loongson_spi_init_controller(dev, reg_base);
if (ret)
return dev_err_probe(dev, ret, "failed to initialize controller\n");
return 0;
}
static struct pci_device_id loongson_spi_devices[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a0b) },
{ PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a1b) },
{ }
};
MODULE_DEVICE_TABLE(pci, loongson_spi_devices);
static struct pci_driver loongson_spi_pci_driver = {
.name = "loongson-spi-pci",
.id_table = loongson_spi_devices,
.probe = loongson_spi_pci_register,
.driver = {
.bus = &pci_bus_type,
.pm = &loongson_spi_dev_pm_ops,
},
};
module_pci_driver(loongson_spi_pci_driver);
MODULE_DESCRIPTION("Loongson spi pci driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS(SPI_LOONGSON_CORE);
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