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

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * RDC321x MFD southbridge driver
   4 *
   5 * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
   6 * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
   7 */
   8#include <linux/module.h>
   9#include <linux/kernel.h>
  10#include <linux/platform_device.h>
  11#include <linux/pci.h>
  12#include <linux/mfd/core.h>
  13#include <linux/mfd/rdc321x.h>
  14
  15static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
  16
  17static const struct resource rdc321x_wdt_resource[] = {
  18        {
  19                .name   = "wdt-reg",
  20                .start  = RDC321X_WDT_CTRL,
  21                .end    = RDC321X_WDT_CTRL + 0x3,
  22                .flags  = IORESOURCE_IO,
  23        }
  24};
  25
  26static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
  27        .max_gpios      = RDC321X_NUM_GPIO,
  28};
  29
  30static const struct resource rdc321x_gpio_resources[] = {
  31        {
  32                .name   = "gpio-reg1",
  33                .start  = RDC321X_GPIO_CTRL_REG1,
  34                .end    = RDC321X_GPIO_CTRL_REG1 + 0x7,
  35                .flags  = IORESOURCE_IO,
  36        }, {
  37                .name   = "gpio-reg2",
  38                .start  = RDC321X_GPIO_CTRL_REG2,
  39                .end    = RDC321X_GPIO_CTRL_REG2 + 0x7,
  40                .flags  = IORESOURCE_IO,
  41        }
  42};
  43
  44static const struct mfd_cell rdc321x_sb_cells[] = {
  45        {
  46                .name           = "rdc321x-wdt",
  47                .resources      = rdc321x_wdt_resource,
  48                .num_resources  = ARRAY_SIZE(rdc321x_wdt_resource),
  49                .platform_data  = &rdc321x_wdt_pdata,
  50                .pdata_size     = sizeof(rdc321x_wdt_pdata),
  51        }, {
  52                .name           = "rdc321x-gpio",
  53                .resources      = rdc321x_gpio_resources,
  54                .num_resources  = ARRAY_SIZE(rdc321x_gpio_resources),
  55                .platform_data  = &rdc321x_gpio_pdata,
  56                .pdata_size     = sizeof(rdc321x_gpio_pdata),
  57        },
  58};
  59
  60static int rdc321x_sb_probe(struct pci_dev *pdev,
  61                                        const struct pci_device_id *ent)
  62{
  63        int err;
  64
  65        err = pci_enable_device(pdev);
  66        if (err) {
  67                dev_err(&pdev->dev, "failed to enable device\n");
  68                return err;
  69        }
  70
  71        rdc321x_gpio_pdata.sb_pdev = pdev;
  72        rdc321x_wdt_pdata.sb_pdev = pdev;
  73
  74        return devm_mfd_add_devices(&pdev->dev, -1,
  75                                    rdc321x_sb_cells,
  76                                    ARRAY_SIZE(rdc321x_sb_cells),
  77                                    NULL, 0, NULL);
  78}
  79
  80static const struct pci_device_id rdc321x_sb_table[] = {
  81        { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
  82        {}
  83};
  84MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
  85
  86static struct pci_driver rdc321x_sb_driver = {
  87        .name           = "RDC321x Southbridge",
  88        .id_table       = rdc321x_sb_table,
  89        .probe          = rdc321x_sb_probe,
  90};
  91
  92module_pci_driver(rdc321x_sb_driver);
  93
  94MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
  95MODULE_LICENSE("GPL");
  96MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
  97