// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * RDC321x MFD southbridge driver
 *
 * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
 * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/mfd/core.h>
#include <linux/mfd/rdc321x.h>

static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;

static const struct resource rdc321x_wdt_resource[] = {
        {
                .name   = "wdt-reg",
                .start  = RDC321X_WDT_CTRL,
                .end    = RDC321X_WDT_CTRL + 0x3,
                .flags  = IORESOURCE_IO,
        }
};

static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
        .max_gpios      = RDC321X_NUM_GPIO,
};

static const struct resource rdc321x_gpio_resources[] = {
        {
                .name   = "gpio-reg1",
                .start  = RDC321X_GPIO_CTRL_REG1,
                .end    = RDC321X_GPIO_CTRL_REG1 + 0x7,
                .flags  = IORESOURCE_IO,
        }, {
                .name   = "gpio-reg2",
                .start  = RDC321X_GPIO_CTRL_REG2,
                .end    = RDC321X_GPIO_CTRL_REG2 + 0x7,
                .flags  = IORESOURCE_IO,
        }
};

static const struct mfd_cell rdc321x_sb_cells[] = {
        {
                .name           = "rdc321x-wdt",
                .resources      = rdc321x_wdt_resource,
                .num_resources  = ARRAY_SIZE(rdc321x_wdt_resource),
                .platform_data  = &rdc321x_wdt_pdata,
                .pdata_size     = sizeof(rdc321x_wdt_pdata),
        }, {
                .name           = "rdc321x-gpio",
                .resources      = rdc321x_gpio_resources,
                .num_resources  = ARRAY_SIZE(rdc321x_gpio_resources),
                .platform_data  = &rdc321x_gpio_pdata,
                .pdata_size     = sizeof(rdc321x_gpio_pdata),
        },
};

static int rdc321x_sb_probe(struct pci_dev *pdev,
                                        const struct pci_device_id *ent)
{
        int err;

        err = pci_enable_device(pdev);
        if (err) {
                dev_err(&pdev->dev, "failed to enable device\n");
                return err;
        }

        rdc321x_gpio_pdata.sb_pdev = pdev;
        rdc321x_wdt_pdata.sb_pdev = pdev;

        return devm_mfd_add_devices(&pdev->dev, -1,
                                    rdc321x_sb_cells,
                                    ARRAY_SIZE(rdc321x_sb_cells),
                                    NULL, 0, NULL);
}

static const struct pci_device_id rdc321x_sb_table[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
        {}
};
MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);

static struct pci_driver rdc321x_sb_driver = {
        .name           = "RDC321x Southbridge",
        .id_table       = rdc321x_sb_table,
        .probe          = rdc321x_sb_probe,
};

module_pci_driver(rdc321x_sb_driver);

MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");