pcmcia.c

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/*

  Broadcom B43 wireless driver

  Copyright (c) 2007 Michael Buesch <[email protected]>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

#include "pcmcia.h"

#include <linux/ssb/ssb.h>
#include <linux/slab.h>
#include <linux/module.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/ds.h>
#include <pcmcia/cisreg.h>


static const struct pcmcia_device_id b43_pcmcia_tbl[] = {
    PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
    PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
    PCMCIA_DEVICE_NULL,
};

MODULE_DEVICE_TABLE(pcmcia, b43_pcmcia_tbl);

#ifdef CONFIG_PM
static int b43_pcmcia_suspend(struct pcmcia_device *dev)
{
    struct ssb_bus *ssb = dev->priv;

    return ssb_bus_suspend(ssb);
}

static int b43_pcmcia_resume(struct pcmcia_device *dev)
{
    struct ssb_bus *ssb = dev->priv;

    return ssb_bus_resume(ssb);
}
#else /* CONFIG_PM */
# define b43_pcmcia_suspend     NULL
# define b43_pcmcia_resume      NULL
#endif /* CONFIG_PM */

static int __devinit b43_pcmcia_probe(struct pcmcia_device *dev)
{
    struct ssb_bus *ssb;
    int err = -ENOMEM;
    int res = 0;

    ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
    if (!ssb)
        goto out_error;

    err = -ENODEV;

    dev->config_flags |= CONF_ENABLE_IRQ;

    dev->resource[2]->flags |=  WIN_ENABLE | WIN_DATA_WIDTH_16 |
             WIN_USE_WAIT;
    dev->resource[2]->start = 0;
    dev->resource[2]->end = SSB_CORE_SIZE;
    res = pcmcia_request_window(dev, dev->resource[2], 250);
    if (res != 0)
        goto err_kfree_ssb;

    res = pcmcia_map_mem_page(dev, dev->resource[2], 0);
    if (res != 0)
        goto err_disable;

    if (!dev->irq)
        goto err_disable;

    res = pcmcia_enable_device(dev);
    if (res != 0)
        goto err_disable;

    err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start);
    if (err)
        goto err_disable;
    dev->priv = ssb;

    return 0;

err_disable:
    pcmcia_disable_device(dev);
err_kfree_ssb:
    kfree(ssb);
out_error:
    printk(KERN_ERR "b43-pcmcia: Initialization failed (%d, %d)\n",
           res, err);
    return err;
}

static void __devexit b43_pcmcia_remove(struct pcmcia_device *dev)
{
    struct ssb_bus *ssb = dev->priv;

    ssb_bus_unregister(ssb);
    pcmcia_disable_device(dev);
    kfree(ssb);
    dev->priv = NULL;
}

static struct pcmcia_driver b43_pcmcia_driver = {
    .owner      = THIS_MODULE,
    .name       = "b43-pcmcia",
    .id_table   = b43_pcmcia_tbl,
    .probe      = b43_pcmcia_probe,
    .remove     = __devexit_p(b43_pcmcia_remove),
    .suspend    = b43_pcmcia_suspend,
    .resume     = b43_pcmcia_resume,
};

int b43_pcmcia_init(void)
{
    return pcmcia_register_driver(&b43_pcmcia_driver);
}

void b43_pcmcia_exit(void)
{
    pcmcia_unregister_driver(&b43_pcmcia_driver);
}