1// SPDX-License-Identifier: GPL-2.0+
 2// PCI interface driver for Loongson SPI Support
 3// Copyright (C) 2023 Loongson Technology Corporation Limited
 4
 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	reg_base = pcim_iomap_region(pdev, pci_bar, pci_name(pdev));
23	ret = PTR_ERR_OR_ZERO(reg_base);
24	if (ret)
25		return dev_err_probe(dev, ret, "failed to request and remap memory\n");
26
27	ret = loongson_spi_init_controller(dev, reg_base);
28	if (ret)
29		return dev_err_probe(dev, ret, "failed to initialize controller\n");
30
31	return 0;
32}
33
34static struct pci_device_id loongson_spi_devices[] = {
35	{ PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a0b) },
36	{ PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a1b) },
37	{ }
38};
39MODULE_DEVICE_TABLE(pci, loongson_spi_devices);
40
41static struct pci_driver loongson_spi_pci_driver = {
42	.name       = "loongson-spi-pci",
43	.id_table   = loongson_spi_devices,
44	.probe      = loongson_spi_pci_register,
45	.driver	= {
46		.bus = &pci_bus_type,
47		.pm = &loongson_spi_dev_pm_ops,
48	},
49};
50module_pci_driver(loongson_spi_pci_driver);
51
52MODULE_DESCRIPTION("Loongson spi pci driver");
53MODULE_LICENSE("GPL");
54MODULE_IMPORT_NS("SPI_LOONGSON_CORE");