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Linux/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);
163 

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