drivers/isdn/hisax/teles_cs.c

   1 /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
   2 /*======================================================================
   3
   4   A teles S0 PCMCIA client driver
   5
   6   Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
   7   Written by Christof Petig, christof.petig@wtal.de
   8
   9   Also inspired by ELSA PCMCIA driver
  10   by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
  11
  12   Extensions to new hisax_pcmcia by Karsten Keil
  13
  14   minor changes to be compatible with kernel 2.4.x
  15   by Jan.Schubert@GMX.li
  16
  17   ======================================================================*/
  18
  19 #include <linux/kernel.h>
  20 #include <linux/module.h>
  21 #include <linux/init.h>
  22 #include <linux/ptrace.h>
  23 #include <linux/slab.h>
  24 #include <linux/string.h>
  25 #include <linux/timer.h>
  26 #include <linux/ioport.h>
  27 #include <asm/io.h>
  28
  29 #include <pcmcia/cistpl.h>
  30 #include <pcmcia/cisreg.h>
  31 #include <pcmcia/ds.h>
  32 #include "hisax_cfg.h"
  33
  34 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
  35 MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
  36 MODULE_LICENSE("GPL");
  37
  38
  39 /*====================================================================*/
  40
  41 /* Parameters that can be set with 'insmod' */
  42
  43 static int protocol = 2;        /* EURO-ISDN Default */
  44 module_param(protocol, int, 0);
  45
  46 static int teles_cs_config(struct pcmcia_device *link);
  47 static void teles_cs_release(struct pcmcia_device *link);
  48 static void teles_detach(struct pcmcia_device *p_dev);
  49
  50 typedef struct local_info_t {
  51         struct pcmcia_device    *p_dev;
  52         int                 busy;
  53         int                     cardnr;
  54 } local_info_t;
  55
  56 static int teles_probe(struct pcmcia_device *link)
  57 {
  58         local_info_t *local;
  59
  60         dev_dbg(&link->dev, "teles_attach()\n");
  61
  62         /* Allocate space for private device-specific data */
  63         local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
  64         if (!local) return -ENOMEM;
  65         local->cardnr = -1;
  66
  67         local->p_dev = link;
  68         link->priv = local;
  69
  70         link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
  71
  72         return teles_cs_config(link);
  73 } /* teles_attach */
  74
  75 static void teles_detach(struct pcmcia_device *link)
  76 {
  77         local_info_t *info = link->priv;
  78
  79         dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
  80
  81         info->busy = 1;
  82         teles_cs_release(link);
  83
  84         kfree(info);
  85 } /* teles_detach */
  86
  87 static int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
  88 {
  89         int j;
  90
  91         p_dev->io_lines = 5;
  92         p_dev->resource[0]->end = 96;
  93         p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
  94         p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
  95
  96         if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
  97                 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
  98                 if (!pcmcia_request_io(p_dev))
  99                         return 0;
 100         } else {
 101                 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
 102                 for (j = 0x2f0; j > 0x100; j -= 0x10) {
 103                         p_dev->resource[0]->start = j;
 104                         if (!pcmcia_request_io(p_dev))
 105                                 return 0;
 106                 }
 107         }
 108         return -ENODEV;
 109 }
 110
 111 static int teles_cs_config(struct pcmcia_device *link)
 112 {
 113         int i;
 114         IsdnCard_t icard;
 115
 116         dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
 117
 118         i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
 119         if (i != 0)
 120                 goto cs_failed;
 121
 122         if (!link->irq)
 123                 goto cs_failed;
 124
 125         i = pcmcia_enable_device(link);
 126         if (i != 0)
 127                 goto cs_failed;
 128
 129         icard.para[0] = link->irq;
 130         icard.para[1] = link->resource[0]->start;
 131         icard.protocol = protocol;
 132         icard.typ = ISDN_CTYPE_TELESPCMCIA;
 133
 134         i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard);
 135         if (i < 0) {
 136                 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
 137                        i, (unsigned int) link->resource[0]->start);
 138                 teles_cs_release(link);
 139                 return -ENODEV;
 140         }
 141
 142         ((local_info_t *)link->priv)->cardnr = i;
 143         return 0;
 144
 145 cs_failed:
 146         teles_cs_release(link);
 147         return -ENODEV;
 148 } /* teles_cs_config */
 149
 150 static void teles_cs_release(struct pcmcia_device *link)
 151 {
 152         local_info_t *local = link->priv;
 153
 154         dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
 155
 156         if (local) {
 157                 if (local->cardnr >= 0) {
 158                         /* no unregister function with hisax */
 159                         HiSax_closecard(local->cardnr);
 160                 }
 161         }
 162
 163         pcmcia_disable_device(link);
 164 } /* teles_cs_release */
 165
 166 static int teles_suspend(struct pcmcia_device *link)
 167 {
 168         local_info_t *dev = link->priv;
 169
 170         dev->busy = 1;
 171
 172         return 0;
 173 }
 174
 175 static int teles_resume(struct pcmcia_device *link)
 176 {
 177         local_info_t *dev = link->priv;
 178
 179         dev->busy = 0;
 180
 181         return 0;
 182 }
 183
 184
 185 static const struct pcmcia_device_id teles_ids[] = {
 186         PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
 187         PCMCIA_DEVICE_NULL,
 188 };
 189 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
 190
 191 static struct pcmcia_driver teles_cs_driver = {
 192         .owner          = THIS_MODULE,
 193         .name           = "teles_cs",
 194         .probe          = teles_probe,
 195         .remove         = teles_detach,
 196         .id_table       = teles_ids,
 197         .suspend        = teles_suspend,
 198         .resume         = teles_resume,
 199 };
 200 module_pcmcia_driver(teles_cs_driver);