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2262054e74
What's worse than no comment? A wrong comment. Several PCMCIA device drivers contained the same comments, which were based on how the PCMCIA subsystem worked in the old days of 2.4., and which were originally part of a "dummy_cs" driver. These comments no longer matched at all what is happening now, and therefore should be removed. Tested-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/*
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* PCMCIA client driver for AVM A1 / Fritz!PCMCIA
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*
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* Author Carsten Paeth
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* Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include "hisax_cfg.h"
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MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
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MODULE_AUTHOR("Carsten Paeth");
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MODULE_LICENSE("GPL");
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/*====================================================================*/
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/* Parameters that can be set with 'insmod' */
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static int isdnprot = 2;
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module_param(isdnprot, int, 0);
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/*====================================================================*/
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static int avma1cs_config(struct pcmcia_device *link) __devinit ;
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static void avma1cs_release(struct pcmcia_device *link);
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static void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ;
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static int __devinit avma1cs_probe(struct pcmcia_device *p_dev)
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{
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dev_dbg(&p_dev->dev, "avma1cs_attach()\n");
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/* General socket configuration */
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p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
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p_dev->config_index = 1;
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p_dev->config_regs = PRESENT_OPTION;
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return avma1cs_config(p_dev);
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} /* avma1cs_attach */
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static void __devexit avma1cs_detach(struct pcmcia_device *link)
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{
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dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
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avma1cs_release(link);
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kfree(link->priv);
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} /* avma1cs_detach */
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static int avma1cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
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{
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p_dev->resource[0]->end = 16;
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p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
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p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
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p_dev->io_lines = 5;
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return pcmcia_request_io(p_dev);
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}
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static int __devinit avma1cs_config(struct pcmcia_device *link)
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{
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int i = -1;
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char devname[128];
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IsdnCard_t icard;
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int busy = 0;
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dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);
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devname[0] = 0;
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if (link->prod_id[1])
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strlcpy(devname, link->prod_id[1], sizeof(devname));
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if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
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return -ENODEV;
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do {
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/*
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* allocate an interrupt line
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*/
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if (!link->irq) {
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/* undo */
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pcmcia_disable_device(link);
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break;
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}
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/*
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* configure the PCMCIA socket
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*/
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i = pcmcia_enable_device(link);
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if (i != 0) {
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pcmcia_disable_device(link);
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break;
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}
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} while (0);
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/* If any step failed, release any partially configured state */
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if (i != 0) {
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avma1cs_release(link);
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return -ENODEV;
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}
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icard.para[0] = link->irq;
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icard.para[1] = link->resource[0]->start;
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icard.protocol = isdnprot;
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icard.typ = ISDN_CTYPE_A1_PCMCIA;
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i = hisax_init_pcmcia(link, &busy, &icard);
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if (i < 0) {
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printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 "
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"PCMCIA %d at i/o %#x\n", i,
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(unsigned int) link->resource[0]->start);
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avma1cs_release(link);
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return -ENODEV;
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}
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link->priv = (void *) (unsigned long) i;
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return 0;
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} /* avma1cs_config */
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static void avma1cs_release(struct pcmcia_device *link)
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{
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unsigned long minor = (unsigned long) link->priv;
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dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);
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/* now unregister function with hisax */
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HiSax_closecard(minor);
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pcmcia_disable_device(link);
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} /* avma1cs_release */
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static struct pcmcia_device_id avma1cs_ids[] = {
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PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
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PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
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PCMCIA_DEVICE_NULL
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};
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MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
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static struct pcmcia_driver avma1cs_driver = {
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.owner = THIS_MODULE,
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.name = "avma1_cs",
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.probe = avma1cs_probe,
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.remove = __devexit_p(avma1cs_detach),
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.id_table = avma1cs_ids,
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};
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static int __init init_avma1_cs(void)
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{
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return pcmcia_register_driver(&avma1cs_driver);
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}
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static void __exit exit_avma1_cs(void)
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{
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pcmcia_unregister_driver(&avma1cs_driver);
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}
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module_init(init_avma1_cs);
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module_exit(exit_avma1_cs);
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