linux/drivers/mfd/rdc321x-southbridge.c
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   1/*
   2 * RDC321x MFD southbrige driver
   3 *
   4 * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
   5 * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 *
  21 */
  22#include <linux/init.h>
  23#include <linux/module.h>
  24#include <linux/kernel.h>
  25#include <linux/platform_device.h>
  26#include <linux/pci.h>
  27#include <linux/mfd/core.h>
  28#include <linux/mfd/rdc321x.h>
  29
  30static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
  31
  32static struct resource rdc321x_wdt_resource[] = {
  33        {
  34                .name   = "wdt-reg",
  35                .start  = RDC321X_WDT_CTRL,
  36                .end    = RDC321X_WDT_CTRL + 0x3,
  37                .flags  = IORESOURCE_IO,
  38        }
  39};
  40
  41static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
  42        .max_gpios      = RDC321X_MAX_GPIO,
  43};
  44
  45static struct resource rdc321x_gpio_resources[] = {
  46        {
  47                .name   = "gpio-reg1",
  48                .start  = RDC321X_GPIO_CTRL_REG1,
  49                .end    = RDC321X_GPIO_CTRL_REG1 + 0x7,
  50                .flags  = IORESOURCE_IO,
  51        }, {
  52                .name   = "gpio-reg2",
  53                .start  = RDC321X_GPIO_CTRL_REG2,
  54                .end    = RDC321X_GPIO_CTRL_REG2 + 0x7,
  55                .flags  = IORESOURCE_IO,
  56        }
  57};
  58
  59static struct mfd_cell rdc321x_sb_cells[] = {
  60        {
  61                .name           = "rdc321x-wdt",
  62                .resources      = rdc321x_wdt_resource,
  63                .num_resources  = ARRAY_SIZE(rdc321x_wdt_resource),
  64                .mfd_data       = &rdc321x_wdt_pdata,
  65        }, {
  66                .name           = "rdc321x-gpio",
  67                .resources      = rdc321x_gpio_resources,
  68                .num_resources  = ARRAY_SIZE(rdc321x_gpio_resources),
  69                .mfd_data       = &rdc321x_gpio_pdata,
  70        },
  71};
  72
  73static int __devinit rdc321x_sb_probe(struct pci_dev *pdev,
  74                                        const struct pci_device_id *ent)
  75{
  76        int err;
  77
  78        err = pci_enable_device(pdev);
  79        if (err) {
  80                dev_err(&pdev->dev, "failed to enable device\n");
  81                return err;
  82        }
  83
  84        rdc321x_gpio_pdata.sb_pdev = pdev;
  85        rdc321x_wdt_pdata.sb_pdev = pdev;
  86
  87        return mfd_add_devices(&pdev->dev, -1,
  88                rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells), NULL, 0);
  89}
  90
  91static void __devexit rdc321x_sb_remove(struct pci_dev *pdev)
  92{
  93        mfd_remove_devices(&pdev->dev);
  94}
  95
  96static DEFINE_PCI_DEVICE_TABLE(rdc321x_sb_table) = {
  97        { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
  98        {}
  99};
 100MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
 101
 102static struct pci_driver rdc321x_sb_driver = {
 103        .name           = "RDC321x Southbridge",
 104        .id_table       = rdc321x_sb_table,
 105        .probe          = rdc321x_sb_probe,
 106        .remove         = __devexit_p(rdc321x_sb_remove),
 107};
 108
 109static int __init rdc321x_sb_init(void)
 110{
 111        return pci_register_driver(&rdc321x_sb_driver);
 112}
 113
 114static void __exit rdc321x_sb_exit(void)
 115{
 116        pci_unregister_driver(&rdc321x_sb_driver);
 117}
 118
 119module_init(rdc321x_sb_init);
 120module_exit(rdc321x_sb_exit);
 121
 122MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
 123MODULE_LICENSE("GPL");
 124MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
 125