rdc321x-southbridge.c

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/*
 * RDC321x MFD southbridge driver
 *
 * Copyright (C) 2007-2010 Florian Fainelli <[email protected]>
 * Copyright (C) 2010 Bernhard Loos <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#include <linux/init.h>
#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 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_MAX_GPIO,
};

static 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 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 __devinit 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 mfd_add_devices(&pdev->dev, -1,
                   rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
                   NULL, 0, NULL);
}

static void __devexit rdc321x_sb_remove(struct pci_dev *pdev)
{
    mfd_remove_devices(&pdev->dev);
}

static DEFINE_PCI_DEVICE_TABLE(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,
    .remove     = __devexit_p(rdc321x_sb_remove),
};

module_pci_driver(rdc321x_sb_driver);

MODULE_AUTHOR("Florian Fainelli <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");