LXR linux/drivers/mfd/rdc321x-southbridge.c

   1/*
   2 * RDC321x MFD southbridge 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/module.h>
  23#include <linux/kernel.h>
  24#include <linux/platform_device.h>
  25#include <linux/pci.h>
  26#include <linux/mfd/core.h>
  27#include <linux/mfd/rdc321x.h>
  28
  29static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
  30
  31static struct resource rdc321x_wdt_resource[] = {
  32        {
  33                .name   = "wdt-reg",
  34                .start  = RDC321X_WDT_CTRL,
  35                .end    = RDC321X_WDT_CTRL + 0x3,
  36                .flags  = IORESOURCE_IO,
  37        }
  38};
  39
  40static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
  41        .max_gpios      = RDC321X_NUM_GPIO,
  42};
  43
  44static struct resource rdc321x_gpio_resources[] = {
  45        {
  46                .name   = "gpio-reg1",
  47                .start  = RDC321X_GPIO_CTRL_REG1,
  48                .end    = RDC321X_GPIO_CTRL_REG1 + 0x7,
  49                .flags  = IORESOURCE_IO,
  50        }, {
  51                .name   = "gpio-reg2",
  52                .start  = RDC321X_GPIO_CTRL_REG2,
  53                .end    = RDC321X_GPIO_CTRL_REG2 + 0x7,
  54                .flags  = IORESOURCE_IO,
  55        }
  56};
  57
  58static const struct mfd_cell rdc321x_sb_cells[] = {
  59        {
  60                .name           = "rdc321x-wdt",
  61                .resources      = rdc321x_wdt_resource,
  62                .num_resources  = ARRAY_SIZE(rdc321x_wdt_resource),
  63                .platform_data  = &rdc321x_wdt_pdata,
  64                .pdata_size     = sizeof(rdc321x_wdt_pdata),
  65        }, {
  66                .name           = "rdc321x-gpio",
  67                .resources      = rdc321x_gpio_resources,
  68                .num_resources  = ARRAY_SIZE(rdc321x_gpio_resources),
  69                .platform_data  = &rdc321x_gpio_pdata,
  70                .pdata_size     = sizeof(rdc321x_gpio_pdata),
  71        },
  72};
  73
  74static int rdc321x_sb_probe(struct pci_dev *pdev,
  75                                        const struct pci_device_id *ent)
  76{
  77        int err;
  78
  79        err = pci_enable_device(pdev);
  80        if (err) {
  81                dev_err(&pdev->dev, "failed to enable device\n");
  82                return err;
  83        }
  84
  85        rdc321x_gpio_pdata.sb_pdev = pdev;
  86        rdc321x_wdt_pdata.sb_pdev = pdev;
  87
  88        return mfd_add_devices(&pdev->dev, -1,
  89                               rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
  90                               NULL, 0, NULL);
  91}
  92
  93static void rdc321x_sb_remove(struct pci_dev *pdev)
  94{
  95        mfd_remove_devices(&pdev->dev);
  96}
  97
  98static const struct pci_device_id rdc321x_sb_table[] = {
  99        { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
 100        {}
 101};
 102MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
 103
 104static struct pci_driver rdc321x_sb_driver = {
 105        .name           = "RDC321x Southbridge",
 106        .id_table       = rdc321x_sb_table,
 107        .probe          = rdc321x_sb_probe,
 108        .remove         = rdc321x_sb_remove,
 109};
 110
 111module_pci_driver(rdc321x_sb_driver);
 112
 113MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
 114MODULE_LICENSE("GPL");
 115MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
 116