drivers/isdn/hisax/avma1_cs.c

   1 /*
   2  * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
   3  *
   4  * Author       Carsten Paeth
   5  * Copyright    1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
   6  *
   7  * This software may be used and distributed according to the terms
   8  * of the GNU General Public License, incorporated herein by reference.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/ptrace.h>
  18 #include <linux/slab.h>
  19 #include <linux/string.h>
  20 #include <asm/io.h>
  21
  22 #include <pcmcia/cistpl.h>
  23 #include <pcmcia/ds.h>
  24 #include "hisax_cfg.h"
  25
  26 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
  27 MODULE_AUTHOR("Carsten Paeth");
  28 MODULE_LICENSE("GPL");
  29
  30
  31 /*====================================================================*/
  32
  33 /* Parameters that can be set with 'insmod' */
  34
  35 static int isdnprot = 2;
  36
  37 module_param(isdnprot, int, 0);
  38
  39 /*====================================================================*/
  40
  41 static int avma1cs_config(struct pcmcia_device *link);
  42 static void avma1cs_release(struct pcmcia_device *link);
  43 static void avma1cs_detach(struct pcmcia_device *p_dev);
  44
  45 static int avma1cs_probe(struct pcmcia_device *p_dev)
  46 {
  47         dev_dbg(&p_dev->dev, "avma1cs_attach()\n");
  48
  49         /* General socket configuration */
  50         p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
  51         p_dev->config_index = 1;
  52         p_dev->config_regs = PRESENT_OPTION;
  53
  54         return avma1cs_config(p_dev);
  55 } /* avma1cs_attach */
  56
  57 static void avma1cs_detach(struct pcmcia_device *link)
  58 {
  59         dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
  60         avma1cs_release(link);
  61         kfree(link->priv);
  62 } /* avma1cs_detach */
  63
  64 static int avma1cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
  65 {
  66         p_dev->resource[0]->end = 16;
  67         p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
  68         p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
  69         p_dev->io_lines = 5;
  70
  71         return pcmcia_request_io(p_dev);
  72 }
  73
  74
  75 static int avma1cs_config(struct pcmcia_device *link)
  76 {
  77         int i = -1;
  78         char devname[128];
  79         IsdnCard_t      icard;
  80         int busy = 0;
  81
  82         dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);
  83
  84         devname[0] = 0;
  85         if (link->prod_id[1])
  86                 strlcpy(devname, link->prod_id[1], sizeof(devname));
  87
  88         if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
  89                 return -ENODEV;
  90
  91         do {
  92                 /*
  93                  * allocate an interrupt line
  94                  */
  95                 if (!link->irq) {
  96                         /* undo */
  97                         pcmcia_disable_device(link);
  98                         break;
  99                 }
 100
 101                 /*
 102                  * configure the PCMCIA socket
 103                  */
 104                 i = pcmcia_enable_device(link);
 105                 if (i != 0) {
 106                         pcmcia_disable_device(link);
 107                         break;
 108                 }
 109
 110         } while (0);
 111
 112         /* If any step failed, release any partially configured state */
 113         if (i != 0) {
 114                 avma1cs_release(link);
 115                 return -ENODEV;
 116         }
 117
 118         icard.para[0] = link->irq;
 119         icard.para[1] = link->resource[0]->start;
 120         icard.protocol = isdnprot;
 121         icard.typ = ISDN_CTYPE_A1_PCMCIA;
 122
 123         i = hisax_init_pcmcia(link, &busy, &icard);
 124         if (i < 0) {
 125                 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 "
 126                        "PCMCIA %d at i/o %#x\n", i,
 127                        (unsigned int) link->resource[0]->start);
 128                 avma1cs_release(link);
 129                 return -ENODEV;
 130         }
 131         link->priv = (void *) (unsigned long) i;
 132
 133         return 0;
 134 } /* avma1cs_config */
 135
 136 static void avma1cs_release(struct pcmcia_device *link)
 137 {
 138         unsigned long minor = (unsigned long) link->priv;
 139
 140         dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);
 141
 142         /* now unregister function with hisax */
 143         HiSax_closecard(minor);
 144
 145         pcmcia_disable_device(link);
 146 } /* avma1cs_release */
 147
 148 static const struct pcmcia_device_id avma1cs_ids[] = {
 149         PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
 150         PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
 151         PCMCIA_DEVICE_NULL
 152 };
 153 MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
 154
 155 static struct pcmcia_driver avma1cs_driver = {
 156         .owner          = THIS_MODULE,
 157         .name           = "avma1_cs",
 158         .probe          = avma1cs_probe,
 159         .remove         = avma1cs_detach,
 160         .id_table       = avma1cs_ids,
 161 };
 162 module_pcmcia_driver(avma1cs_driver);