/*
* Driver for ST5481 USB ISDN modem
*
* Author Frode Isaksen
* Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
* 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
/*
* TODO:
*
* b layer1 delay?
* hotplug / unregister issues
* mod_inc/dec_use_count
* unify parts of d/b channel usb handling
* file header
* avoid copy to isoc buffer?
* improve usb delay?
* merge l1 state machines?
* clean up debug
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/slab.h>
#include "st5481.h"
MODULE_DESCRIPTION("ISDN4Linux: driver for ST5481 USB ISDN adapter");
MODULE_AUTHOR("Frode Isaksen");
MODULE_LICENSE("GPL");
static int protocol = 2; /* EURO-ISDN Default */
module_param(protocol, int, 0);
static int number_of_leds = 2; /* 2 LEDs on the adpater default */
module_param(number_of_leds, int, 0);
#ifdef CONFIG_HISAX_DEBUG
static int debug = 0;
module_param(debug, int, 0);
#endif
int st5481_debug;
/* ======================================================================
* registration/deregistration with the USB layer
*/
/*
* This function will be called when the adapter is plugged
* into the USB bus.
*/
static int probe_st5481(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct st5481_adapter *adapter;
struct hisax_b_if *b_if[2];
int retval, i;
printk(KERN_INFO "st541: found adapter VendorId %04x, ProductId %04x, LEDs %d\n",
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct),
number_of_leds);
adapter = kzalloc(sizeof(struct st5481_adapter), GFP_KERNEL);
if (!adapter)
return -ENOMEM;
adapter->number_of_leds = number_of_leds;
adapter->usb_dev = dev;
adapter->hisax_d_if.owner = THIS_MODULE;
adapter->hisax_d_if.ifc.priv = adapter;
adapter->hisax_d_if.ifc.l2l1 = st5481_d_l2l1;
for (i = 0; i < 2; i++) {
adapter->bcs[i].adapter = adapter;
adapter->bcs[i].channel = i;
adapter->bcs[i].b_if.ifc.priv = &adapter->bcs[i];
adapter->bcs[i].b_if.ifc.l2l1 = st5481_b_l2l1;
}
retval = st5481_setup_usb(adapter);
if (retval < 0)
goto err;
retval = st5481_setup_d(adapter);
if (retval < 0)
goto err_usb;
retval = st5481_setup_b(&adapter->bcs[0]);
if (retval < 0)
goto err_d;
retval = st5481_setup_b(&adapter->bcs[1]);
if (retval < 0)
goto err_b;
for (i = 0; i < 2; i++)
b_if[i] = &adapter->bcs[i].b_if;
if (hisax_register(&adapter->hisax_d_if, b_if, "st5481_usb",
protocol) != 0)
goto err_b1;
st5481_start(adapter);
usb_set_intfdata(intf, adapter);
return 0;
err_b1:
st5481_release_b(&adapter->bcs[1]);
err_b:
st5481_release_b(&adapter->bcs[0]);
err_d:
st5481_release_d(adapter);
err_usb:
st5481_release_usb(adapter);
err:
kfree(adapter);
return -EIO;
}
/*
* This function will be called when the adapter is removed
* from the USB bus.
*/
static void disconnect_st5481(struct usb_interface *intf)
{
struct st5481_adapter *adapter = usb_get_intfdata(intf);
DBG(1, "");
usb_set_intfdata(intf, NULL);
if (!adapter)
return;
st5481_stop(adapter);
st5481_release_b(&adapter->bcs[1]);
st5481_release_b(&adapter->bcs[0]);
st5481_release_d(adapter);
// we would actually better wait for completion of outstanding urbs
mdelay(2);
st5481_release_usb(adapter);
hisax_unregister(&adapter->hisax_d_if);
kfree(adapter);
}
/*
* The last 4 bits in the Product Id is set with 4 pins on the chip.
*/
static struct usb_device_id st5481_ids[] = {
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x0) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x1) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x2) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x3) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x4) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x5) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x6) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x7) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x8) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0x9) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xA) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xB) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xC) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xD) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xE) },
{ USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID + 0xF) },
{ }
};
MODULE_DEVICE_TABLE(usb, st5481_ids);
static struct usb_driver st5481_usb_driver = {
.name = "st5481_usb",
.probe = probe_st5481,
.disconnect = disconnect_st5481,
.id_table = st5481_ids,
.disable_hub_initiated_lpm = 1,
};
static int __init st5481_usb_init(void)
{
int retval;
#ifdef CONFIG_HISAX_DEBUG
st5481_debug = debug;
#endif
printk(KERN_INFO "hisax_st5481: ST5481 USB ISDN driver $Revision: 2.4.2.3 $\n");
retval = st5481_d_init();
if (retval < 0)
goto out;
retval = usb_register(&st5481_usb_driver);
if (retval < 0)
goto out_d_exit;
return 0;
out_d_exit:
st5481_d_exit();
out:
return retval;
}
static void __exit st5481_usb_exit(void)
{
usb_deregister(&st5481_usb_driver);
st5481_d_exit();
}
module_init(st5481_usb_init);
module_exit(st5481_usb_exit);
