drivers/net/wireless/b43/pcmcia.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   Copyright (c) 2007 Michael Buesch <m@bues.ch>
   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; see the file COPYING.  If not, write to
  19   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  20   Boston, MA 02110-1301, USA.
  21
  22 */
  23
  24 #include "pcmcia.h"
  25
  26 #include <linux/ssb/ssb.h>
  27 #include <linux/slab.h>
  28 #include <linux/module.h>
  29
  30 #include <pcmcia/cistpl.h>
  31 #include <pcmcia/ciscode.h>
  32 #include <pcmcia/ds.h>
  33 #include <pcmcia/cisreg.h>
  34
  35
  36 static const struct pcmcia_device_id b43_pcmcia_tbl[] = {
  37         PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
  38         PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
  39         PCMCIA_DEVICE_NULL,
  40 };
  41
  42 MODULE_DEVICE_TABLE(pcmcia, b43_pcmcia_tbl);
  43
  44 #ifdef CONFIG_PM
  45 static int b43_pcmcia_suspend(struct pcmcia_device *dev)
  46 {
  47         struct ssb_bus *ssb = dev->priv;
  48
  49         return ssb_bus_suspend(ssb);
  50 }
  51
  52 static int b43_pcmcia_resume(struct pcmcia_device *dev)
  53 {
  54         struct ssb_bus *ssb = dev->priv;
  55
  56         return ssb_bus_resume(ssb);
  57 }
  58 #else /* CONFIG_PM */
  59 # define b43_pcmcia_suspend             NULL
  60 # define b43_pcmcia_resume              NULL
  61 #endif /* CONFIG_PM */
  62
  63 static int b43_pcmcia_probe(struct pcmcia_device *dev)
  64 {
  65         struct ssb_bus *ssb;
  66         int err = -ENOMEM;
  67         int res = 0;
  68
  69         ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
  70         if (!ssb)
  71                 goto out_error;
  72
  73         err = -ENODEV;
  74
  75         dev->config_flags |= CONF_ENABLE_IRQ;
  76
  77         dev->resource[2]->flags |=  WIN_ENABLE | WIN_DATA_WIDTH_16 |
  78                          WIN_USE_WAIT;
  79         dev->resource[2]->start = 0;
  80         dev->resource[2]->end = SSB_CORE_SIZE;
  81         res = pcmcia_request_window(dev, dev->resource[2], 250);
  82         if (res != 0)
  83                 goto err_kfree_ssb;
  84
  85         res = pcmcia_map_mem_page(dev, dev->resource[2], 0);
  86         if (res != 0)
  87                 goto err_disable;
  88
  89         if (!dev->irq)
  90                 goto err_disable;
  91
  92         res = pcmcia_enable_device(dev);
  93         if (res != 0)
  94                 goto err_disable;
  95
  96         err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start);
  97         if (err)
  98                 goto err_disable;
  99         dev->priv = ssb;
 100
 101         return 0;
 102
 103 err_disable:
 104         pcmcia_disable_device(dev);
 105 err_kfree_ssb:
 106         kfree(ssb);
 107 out_error:
 108         printk(KERN_ERR "b43-pcmcia: Initialization failed (%d, %d)\n",
 109                res, err);
 110         return err;
 111 }
 112
 113 static void b43_pcmcia_remove(struct pcmcia_device *dev)
 114 {
 115         struct ssb_bus *ssb = dev->priv;
 116
 117         ssb_bus_unregister(ssb);
 118         pcmcia_disable_device(dev);
 119         kfree(ssb);
 120         dev->priv = NULL;
 121 }
 122
 123 static struct pcmcia_driver b43_pcmcia_driver = {
 124         .owner          = THIS_MODULE,
 125         .name           = "b43-pcmcia",
 126         .id_table       = b43_pcmcia_tbl,
 127         .probe          = b43_pcmcia_probe,
 128         .remove         = b43_pcmcia_remove,
 129         .suspend        = b43_pcmcia_suspend,
 130         .resume         = b43_pcmcia_resume,
 131 };
 132
 133 int b43_pcmcia_init(void)
 134 {
 135         return pcmcia_register_driver(&b43_pcmcia_driver);
 136 }
 137
 138 void b43_pcmcia_exit(void)
 139 {
 140         pcmcia_unregister_driver(&b43_pcmcia_driver);
 141 }