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Linux/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 /*
134  * These are not module init/exit functions!
135  * The module_pcmcia_driver() helper cannot be used here.
136  */
137 int b43_pcmcia_init(void)
138 {
139         return pcmcia_register_driver(&b43_pcmcia_driver);
140 }
141 
142 void b43_pcmcia_exit(void)
143 {
144         pcmcia_unregister_driver(&b43_pcmcia_driver);
145 }
146 

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