diff options
Diffstat (limited to 'drivers/isdn/hisax/elsa_cs.c')
| -rw-r--r-- | drivers/isdn/hisax/elsa_cs.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/elsa_cs.c b/drivers/isdn/hisax/elsa_cs.c new file mode 100644 index 000000000..40f6fad79 --- /dev/null +++ b/drivers/isdn/hisax/elsa_cs.c @@ -0,0 +1,218 @@ +/*====================================================================== + + An elsa_cs PCMCIA client driver + + This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink + + + The contents of this file are subject to the Mozilla Public + License Version 1.1 (the "License"); you may not use this file + except in compliance with the License. You may obtain a copy of + the License at http://www.mozilla.org/MPL/ + + Software distributed under the License is distributed on an "AS + IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or + implied. See the License for the specific language governing + rights and limitations under the License. + + The initial developer of the original code is David A. Hinds + <dahinds@users.sourceforge.net>. Portions created by David A. Hinds + are Copyright (C) 1999 David A. Hinds. All Rights Reserved. + + Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus + Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved. + + Alternatively, the contents of this file may be used under the + terms of the GNU General Public License version 2 (the "GPL"), in + which case the provisions of the GPL are applicable instead of the + above. If you wish to allow the use of your version of this file + only under the terms of the GPL and not to allow others to use + your version of this file under the MPL, indicate your decision + by deleting the provisions above and replace them with the notice + and other provisions required by the GPL. If you do not delete + the provisions above, a recipient may use your version of this + file under either the MPL or the GPL. + + ======================================================================*/ + +#include <linux/module.h> +#include <linux/kernel.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 Elsa PCM cards"); +MODULE_AUTHOR("Klaus Lichtenwalder"); +MODULE_LICENSE("Dual MPL/GPL"); + + +/*====================================================================*/ + +/* Parameters that can be set with 'insmod' */ + +static int protocol = 2; /* EURO-ISDN Default */ +module_param(protocol, int, 0); + +static int elsa_cs_config(struct pcmcia_device *link); +static void elsa_cs_release(struct pcmcia_device *link); +static void elsa_cs_detach(struct pcmcia_device *p_dev); + +typedef struct local_info_t { + struct pcmcia_device *p_dev; + int busy; + int cardnr; +} local_info_t; + +static int elsa_cs_probe(struct pcmcia_device *link) +{ + local_info_t *local; + + dev_dbg(&link->dev, "elsa_cs_attach()\n"); + + /* Allocate space for private device-specific data */ + local = kzalloc(sizeof(local_info_t), GFP_KERNEL); + if (!local) return -ENOMEM; + + local->p_dev = link; + link->priv = local; + + local->cardnr = -1; + + return elsa_cs_config(link); +} /* elsa_cs_attach */ + +static void elsa_cs_detach(struct pcmcia_device *link) +{ + local_info_t *info = link->priv; + + dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link); + + info->busy = 1; + elsa_cs_release(link); + + kfree(info); +} /* elsa_cs_detach */ + +static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) +{ + int j; + + p_dev->io_lines = 3; + p_dev->resource[0]->end = 8; + 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 "(elsa_cs: looks like the 96 model)\n"); + if (!pcmcia_request_io(p_dev)) + return 0; + } else { + printk(KERN_INFO "(elsa_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 elsa_cs_config(struct pcmcia_device *link) +{ + int i; + IsdnCard_t icard; + + dev_dbg(&link->dev, "elsa_config(0x%p)\n", link); + + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + + i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL); + if (i != 0) + goto failed; + + if (!link->irq) + goto failed; + + i = pcmcia_enable_device(link); + if (i != 0) + goto failed; + + icard.para[0] = link->irq; + icard.para[1] = link->resource[0]->start; + icard.protocol = protocol; + icard.typ = ISDN_CTYPE_ELSA_PCMCIA; + + i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard); + if (i < 0) { + printk(KERN_ERR "elsa_cs: failed to initialize Elsa " + "PCMCIA %d with %pR\n", i, link->resource[0]); + elsa_cs_release(link); + } else + ((local_info_t *)link->priv)->cardnr = i; + + return 0; +failed: + elsa_cs_release(link); + return -ENODEV; +} /* elsa_cs_config */ + +static void elsa_cs_release(struct pcmcia_device *link) +{ + local_info_t *local = link->priv; + + dev_dbg(&link->dev, "elsa_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); +} /* elsa_cs_release */ + +static int elsa_suspend(struct pcmcia_device *link) +{ + local_info_t *dev = link->priv; + + dev->busy = 1; + + return 0; +} + +static int elsa_resume(struct pcmcia_device *link) +{ + local_info_t *dev = link->priv; + + dev->busy = 0; + + return 0; +} + +static const struct pcmcia_device_id elsa_ids[] = { + PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257), + PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, elsa_ids); + +static struct pcmcia_driver elsa_cs_driver = { + .owner = THIS_MODULE, + .name = "elsa_cs", + .probe = elsa_cs_probe, + .remove = elsa_cs_detach, + .id_table = elsa_ids, + .suspend = elsa_suspend, + .resume = elsa_resume, +}; +module_pcmcia_driver(elsa_cs_driver); |