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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 
 29 static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
 30 
 31 static 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 
 40 static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
 41         .max_gpios      = RDC321X_NUM_GPIO,
 42 };
 43 
 44 static 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 
 58 static 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 
 74 static 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 devm_mfd_add_devices(&pdev->dev, -1,
 89                                     rdc321x_sb_cells,
 90                                     ARRAY_SIZE(rdc321x_sb_cells),
 91                                     NULL, 0, NULL);
 92 }
 93 
 94 static const struct pci_device_id rdc321x_sb_table[] = {
 95         { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
 96         {}
 97 };
 98 MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
 99 
100 static struct pci_driver rdc321x_sb_driver = {
101         .name           = "RDC321x Southbridge",
102         .id_table       = rdc321x_sb_table,
103         .probe          = rdc321x_sb_probe,
104 };
105 
106 module_pci_driver(rdc321x_sb_driver);
107 
108 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
109 MODULE_LICENSE("GPL");
110 MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
111 

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