text: /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
  /*======================================================================
  
    A teles S0 PCMCIA client driver
  
    Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
    Written by Christof Petig, christof.petig@wtal.de
  
    Also inspired by ELSA PCMCIA driver
    by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
  
    Extensions to new hisax_pcmcia by Karsten Keil
  
    minor changes to be compatible with kernel 2.4.x
    by Jan.Schubert@GMX.li
  
    ======================================================================*/
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/ptrace.h>
  #include <linux/slab.h>
  #include <linux/string.h>
  #include <linux/timer.h>
  #include <linux/ioport.h>
  #include <asm/io.h>
  
  #include <pcmcia/cistpl.h>
  #include <pcmcia/cisreg.h>
  #include <pcmcia/ds.h>
  #include "hisax_cfg.h"
  
  MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
  MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
  MODULE_LICENSE("GPL");
  
  
  /*====================================================================*/
  
  /* Parameters that can be set with 'insmod' */
  
  static int protocol = 2;        /* EURO-ISDN Default */
  module_param(protocol, int, 0);
  
  static int teles_cs_config(struct pcmcia_device *link) __devinit;
  static void teles_cs_release(struct pcmcia_device *link);
  static void teles_detach(struct pcmcia_device *p_dev) __devexit;
  
  typedef struct local_info_t {
  	struct pcmcia_device	*p_dev;
  	int                 busy;
  	int			cardnr;
  } local_info_t;
  
  static int __devinit teles_probe(struct pcmcia_device *link)
  {
  	local_info_t *local;
  
  	dev_dbg(&link->dev, "teles_attach()\n");
  
  	/* Allocate space for private device-specific data */
  	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
  	if (!local) return -ENOMEM;
  	local->cardnr = -1;
  
  	local->p_dev = link;
  	link->priv = local;
  
  	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
  
  	return teles_cs_config(link);
  } /* teles_attach */
  
  static void __devexit teles_detach(struct pcmcia_device *link)
  {
  	local_info_t *info = link->priv;
  
  	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
  
  	info->busy = 1;
  	teles_cs_release(link);
  
  	kfree(info);
  } /* teles_detach */
  
  static int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
  {
  	int j;
  
  	p_dev->io_lines = 5;
  	p_dev->resource[0]->end = 96;
  	p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
  	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
  
  	if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
  		printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
  		if (!pcmcia_request_io(p_dev))
  			return 0;
  	} else {
  		printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
  		for (j = 0x2f0; j > 0x100; j -= 0x10) {
  			p_dev->resource[0]->start = j;
  			if (!pcmcia_request_io(p_dev))
  				return 0;
  		}
  	}
  	return -ENODEV;
  }
  
  static int __devinit teles_cs_config(struct pcmcia_device *link)
  {
  	int i;
  	IsdnCard_t icard;
  
  	dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
  
  	i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
  	if (i != 0)
  		goto cs_failed;
  
  	if (!link->irq)
  		goto cs_failed;
  
  	i = pcmcia_enable_device(link);
  	if (i != 0)
  		goto cs_failed;
  
  	icard.para[0] = link->irq;
  	icard.para[1] = link->resource[0]->start;
  	icard.protocol = protocol;
  	icard.typ = ISDN_CTYPE_TELESPCMCIA;
  
  	i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard);
  	if (i < 0) {
  		printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
  		       i, (unsigned int) link->resource[0]->start);
  		teles_cs_release(link);
  		return -ENODEV;
  	}
  
  	((local_info_t *)link->priv)->cardnr = i;
  	return 0;
  
  cs_failed:
  	teles_cs_release(link);
  	return -ENODEV;
  } /* teles_cs_config */
  
  static void teles_cs_release(struct pcmcia_device *link)
  {
  	local_info_t *local = link->priv;
  
  	dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
  
  	if (local) {
  		if (local->cardnr >= 0) {
  			/* no unregister function with hisax */
  			HiSax_closecard(local->cardnr);
  		}
  	}
  
  	pcmcia_disable_device(link);
  } /* teles_cs_release */
  
  static int teles_suspend(struct pcmcia_device *link)
  {
  	local_info_t *dev = link->priv;
  
  	dev->busy = 1;
  
  	return 0;
  }
  
  static int teles_resume(struct pcmcia_device *link)
  {
  	local_info_t *dev = link->priv;
  
  	dev->busy = 0;
  
  	return 0;
  }
  
  
  static const struct pcmcia_device_id teles_ids[] = {
  	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
  	PCMCIA_DEVICE_NULL,
  };
  MODULE_DEVICE_TABLE(pcmcia, teles_ids);
  
  static struct pcmcia_driver teles_cs_driver = {
  	.owner		= THIS_MODULE,
  	.name		= "teles_cs",
  	.probe		= teles_probe,
  	.remove		= __devexit_p(teles_detach),
  	.id_table       = teles_ids,
  	.suspend	= teles_suspend,
  	.resume		= teles_resume,
  };
  
  static int __init init_teles_cs(void)
  {
  	return pcmcia_register_driver(&teles_cs_driver);
  }
  
  static void __exit exit_teles_cs(void)
  {
  	pcmcia_unregister_driver(&teles_cs_driver);
  }
  
  module_init(init_teles_cs);
  module_exit(exit_teles_cs);
  