1/* 2 * Driver for ST5481 USB ISDN modem 3 * 4 * Author Frode Isaksen 5 * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com> 6 * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de> 7 * 8 * This software may be used and distributed according to the terms 9 * of the GNU General Public License, incorporated herein by reference. 10 * 11 */ 12 13/* 14 * TODO: 15 * 16 * b layer1 delay? 17 * hotplug / unregister issues 18 * mod_inc/dec_use_count 19 * unify parts of d/b channel usb handling 20 * file header 21 * avoid copy to isoc buffer? 22 * improve usb delay? 23 * merge l1 state machines? 24 * clean up debug 25 */ 26 27#include <linux/module.h> 28#include <linux/init.h> 29#include <linux/usb.h> 30#include <linux/slab.h> 31#include "st5481.h" 32 33MODULE_DESCRIPTION("ISDN4Linux: driver for ST5481 USB ISDN adapter"); 34MODULE_AUTHOR("Frode Isaksen"); 35MODULE_LICENSE("GPL"); 36 37static int protocol = 2; /* EURO-ISDN Default */ 38module_param(protocol, int, 0); 39 40static int number_of_leds = 2; /* 2 LEDs on the adpater default */ 41module_param(number_of_leds, int, 0); 42 43#ifdef CONFIG_HISAX_DEBUG 44static int debug = 0; 45module_param(debug, int, 0); 46#endif 47int st5481_debug; 48 49static LIST_HEAD(adapter_list); 50 51/* ====================================================================== 52 * registration/deregistration with the USB layer 53 */ 54 55/* 56 * This function will be called when the adapter is plugged 57 * into the USB bus. 58 */ 59static int probe_st5481(struct usb_interface *intf, 60 const struct usb_device_id *id) 61{ 62 struct usb_device *dev = interface_to_usbdev(intf); 63 struct st5481_adapter *adapter; 64 struct hisax_b_if *b_if[2]; 65 int retval, i; 66 67 printk(KERN_INFO "st541: found adapter VendorId %04x, ProductId %04x, LEDs %d\n", 68 le16_to_cpu(dev->descriptor.idVendor), 69 le16_to_cpu(dev->descriptor.idProduct), 70 number_of_leds); 71 72 adapter = kzalloc(sizeof(struct st5481_adapter), GFP_KERNEL); 73 if (!adapter) 74 return -ENOMEM; 75 76 adapter->number_of_leds = number_of_leds; 77 adapter->usb_dev = dev; 78 79 adapter->hisax_d_if.owner = THIS_MODULE; 80 adapter->hisax_d_if.ifc.priv = adapter; 81 adapter->hisax_d_if.ifc.l2l1 = st5481_d_l2l1; 82 83 for (i = 0; i < 2; i++) { 84 adapter->bcs[i].adapter = adapter; 85 adapter->bcs[i].channel = i; 86 adapter->bcs[i].b_if.ifc.priv = &adapter->bcs[i]; 87 adapter->bcs[i].b_if.ifc.l2l1 = st5481_b_l2l1; 88 } 89 list_add(&adapter->list, &adapter_list); 90 91 retval = st5481_setup_usb(adapter); 92 if (retval < 0) 93 goto err; 94 95 retval = st5481_setup_d(adapter); 96 if (retval < 0) 97 goto err_usb; 98 99 retval = st5481_setup_b(&adapter->bcs[0]); 100 if (retval < 0) 101 goto err_d; 102 103 retval = st5481_setup_b(&adapter->bcs[1]); 104 if (retval < 0) 105 goto err_b; 106 107 for (i = 0; i < 2; i++) 108 b_if[i] = &adapter->bcs[i].b_if; 109 110 if (hisax_register(&adapter->hisax_d_if, b_if, "st5481_usb", 111 protocol) != 0) 112 goto err_b1; 113 114 st5481_start(adapter); 115 116 usb_set_intfdata(intf, adapter); 117 return 0; 118 119 err_b1: 120 st5481_release_b(&adapter->bcs[1]); 121 err_b: 122 st5481_release_b(&adapter->bcs[0]); 123 err_d: 124 st5481_release_d(adapter); 125 err_usb: 126 st5481_release_usb(adapter); 127 err: 128 return -EIO; 129} 130 131/* 132 * This function will be called when the adapter is removed 133 * from the USB bus. 134 */ 135static void disconnect_st5481(struct usb_interface *intf) 136{ 137 struct st5481_adapter *adapter = usb_get_intfdata(intf); 138 139 DBG(1,""); 140 141 usb_set_intfdata(intf, NULL); 142 if (!adapter) 143 return; 144 145 list_del(&adapter->list); 146 147 st5481_stop(adapter); 148 st5481_release_b(&adapter->bcs[1]); 149 st5481_release_b(&adapter->bcs[0]); 150 st5481_release_d(adapter); 151 // we would actually better wait for completion of outstanding urbs 152 mdelay(2); 153 st5481_release_usb(adapter); 154 155 hisax_unregister(&adapter->hisax_d_if); 156 157 kfree(adapter); 158} 159 160/* 161 * The last 4 bits in the Product Id is set with 4 pins on the chip. 162 */ 163static struct usb_device_id st5481_ids[] = { 164 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x0) }, 165 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x1) }, 166 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x2) }, 167 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x3) }, 168 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x4) }, 169 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x5) }, 170 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x6) }, 171 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x7) }, 172 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x8) }, 173 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0x9) }, 174 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xA) }, 175 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xB) }, 176 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xC) }, 177 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xD) }, 178 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xE) }, 179 { USB_DEVICE(ST_VENDOR_ID, ST5481_PRODUCT_ID+0xF) }, 180 { } 181}; 182MODULE_DEVICE_TABLE (usb, st5481_ids); 183 184static struct usb_driver st5481_usb_driver = { 185 .name = "st5481_usb", 186 .probe = probe_st5481, 187 .disconnect = disconnect_st5481, 188 .id_table = st5481_ids, 189}; 190 191static int __init st5481_usb_init(void) 192{ 193 int retval; 194 195#ifdef CONFIG_HISAX_DEBUG 196 st5481_debug = debug; 197#endif 198 199 printk(KERN_INFO "hisax_st5481: ST5481 USB ISDN driver $Revision: 2.4.2.3 $\n"); 200 201 retval = st5481_d_init(); 202 if (retval < 0) 203 goto out; 204 205 retval = usb_register(&st5481_usb_driver); 206 if (retval < 0) 207 goto out_d_exit; 208 209 return 0; 210 211 out_d_exit: 212 st5481_d_exit(); 213 out: 214 return retval; 215} 216 217static void __exit st5481_usb_exit(void) 218{ 219 usb_deregister(&st5481_usb_driver); 220 st5481_d_exit(); 221} 222 223module_init(st5481_usb_init); 224module_exit(st5481_usb_exit); 225