git.oblomov.eu Git - linux-2.6/blob - drivers/usb/serial/iuu_phoenix.c

   1 /*
   2  * Infinity Unlimited USB Phoenix driver
   3  *
   4  * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
   5  *
   6  * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos BorrÃ¡s)
   7  *
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  *
  13  *  And tested with help of WB Electronics
  14  *
  15  */
  16 #include <linux/kernel.h>
  17 #include <linux/errno.h>
  18 #include <linux/init.h>
  19 #include <linux/slab.h>
  20 #include <linux/tty.h>
  21 #include <linux/tty_driver.h>
  22 #include <linux/tty_flip.h>
  23 #include <linux/serial.h>
  24 #include <linux/module.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/uaccess.h>
  28 #include <linux/usb.h>
  29 #include <linux/usb/serial.h>
  30 #include "iuu_phoenix.h"
  31 #include <linux/random.h>
  32
  33
  34 #ifdef CONFIG_USB_SERIAL_DEBUG
  35 static int debug = 1;
  36 #else
  37 static int debug;
  38 #endif
  39
  40 /*
  41  * Version Information
  42  */
  43 #define DRIVER_VERSION "v0.5"
  44 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
  45
  46 static struct usb_device_id id_table[] = {
  47         {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
  48         {}                      /* Terminating entry */
  49 };
  50 MODULE_DEVICE_TABLE(usb, id_table);
  51
  52 static struct usb_driver iuu_driver = {
  53         .name = "iuu_phoenix",
  54         .probe = usb_serial_probe,
  55         .disconnect = usb_serial_disconnect,
  56         .id_table = id_table,
  57         .no_dynamic_id = 1,
  58 };
  59
  60 /* turbo parameter */
  61 static int boost = 100;
  62 static int clockmode = 1;
  63 static int cdmode = 1;
  64 static int iuu_cardin;
  65 static int iuu_cardout;
  66 static int xmas;
  67
  68 static void read_rxcmd_callback(struct urb *urb);
  69
  70 struct iuu_private {
  71         spinlock_t lock;        /* store irq state */
  72         wait_queue_head_t delta_msr_wait;
  73         u8 line_control;
  74         u8 line_status;
  75         u8 termios_initialized;
  76         int tiostatus;          /* store IUART SIGNAL for tiocmget call */
  77         u8 reset;               /* if 1 reset is needed */
  78         int poll;               /* number of poll */
  79         u8 *writebuf;           /* buffer for writing to device */
  80         int writelen;           /* num of byte to write to device */
  81         u8 *buf;                /* used for initialize speed */
  82         u8 *dbgbuf;             /* debug buffer */
  83         u8 len;
  84 };
  85
  86
  87 static void iuu_free_buf(struct iuu_private *priv)
  88 {
  89         kfree(priv->buf);
  90         kfree(priv->dbgbuf);
  91         kfree(priv->writebuf);
  92 }
  93
  94 static int iuu_alloc_buf(struct iuu_private *priv)
  95 {
  96         priv->buf = kzalloc(256, GFP_KERNEL);
  97         priv->dbgbuf = kzalloc(256, GFP_KERNEL);
  98         priv->writebuf = kzalloc(256, GFP_KERNEL);
  99         if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
 100                 iuu_free_buf(priv);
 101                 dbg("%s problem allocation buffer", __func__);
 102                 return -ENOMEM;
 103         }
 104         dbg("%s - Privates buffers allocation success", __func__);
 105         return 0;
 106 }
 107
 108 static int iuu_startup(struct usb_serial *serial)
 109 {
 110         struct iuu_private *priv;
 111         priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
 112         dbg("%s- priv allocation success", __func__);
 113         if (!priv)
 114                 return -ENOMEM;
 115         if (iuu_alloc_buf(priv)) {
 116                 kfree(priv);
 117                 return -ENOMEM;
 118         }
 119         spin_lock_init(&priv->lock);
 120         init_waitqueue_head(&priv->delta_msr_wait);
 121         usb_set_serial_port_data(serial->port[0], priv);
 122         return 0;
 123 }
 124
 125 /* Shutdown function */
 126 static void iuu_shutdown(struct usb_serial *serial)
 127 {
 128         struct usb_serial_port *port = serial->port[0];
 129         struct iuu_private *priv = usb_get_serial_port_data(port);
 130         if (!port)
 131                 return;
 132
 133         dbg("%s", __func__);
 134
 135         if (priv) {
 136                 iuu_free_buf(priv);
 137                 dbg("%s - I will free all", __func__);
 138                 usb_set_serial_port_data(port, NULL);
 139
 140                 dbg("%s - priv is not anymore in port structure", __func__);
 141                 kfree(priv);
 142
 143                 dbg("%s priv is now kfree", __func__);
 144         }
 145 }
 146
 147 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
 148                         unsigned int set, unsigned int clear)
 149 {
 150         struct usb_serial_port *port = tty->driver_data;
 151         struct iuu_private *priv = usb_get_serial_port_data(port);
 152         unsigned long flags;
 153
 154         /* FIXME: locking on tiomstatus */
 155         dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
 156             port->number, set, clear);
 157
 158         spin_lock_irqsave(&priv->lock, flags);
 159         if (set & TIOCM_RTS)
 160                 priv->tiostatus = TIOCM_RTS;
 161
 162         if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
 163                 dbg("%s TIOCMSET RESET called !!!", __func__);
 164                 priv->reset = 1;
 165         }
 166         spin_unlock_irqrestore(&priv->lock, flags);
 167         return 0;
 168 }
 169
 170 /* This is used to provide a carrier detect mechanism
 171  * When a card is present, the response is 0x00
 172  * When no card , the reader respond with TIOCM_CD
 173  * This is known as CD autodetect mechanism
 174  */
 175 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
 176 {
 177         struct usb_serial_port *port = tty->driver_data;
 178         struct iuu_private *priv = usb_get_serial_port_data(port);
 179         unsigned long flags;
 180         int rc;
 181
 182         spin_lock_irqsave(&priv->lock, flags);
 183         rc = priv->tiostatus;
 184         spin_unlock_irqrestore(&priv->lock, flags);
 185
 186         return rc;
 187 }
 188
 189 static void iuu_rxcmd(struct urb *urb)
 190 {
 191         struct usb_serial_port *port = urb->context;
 192         int result;
 193         dbg("%s - enter", __func__);
 194
 195         if (urb->status) {
 196                 dbg("%s - urb->status = %d", __func__, urb->status);
 197                 /* error stop all */
 198                 return;
 199         }
 200
 201
 202         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
 203         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 204                           usb_sndbulkpipe(port->serial->dev,
 205                                           port->bulk_out_endpointAddress),
 206                           port->write_urb->transfer_buffer, 1,
 207                           read_rxcmd_callback, port);
 208         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 209 }
 210
 211 static int iuu_reset(struct usb_serial_port *port, u8 wt)
 212 {
 213         struct iuu_private *priv = usb_get_serial_port_data(port);
 214         int result;
 215         char *buf_ptr = port->write_urb->transfer_buffer;
 216         dbg("%s - enter", __func__);
 217
 218         /* Prepare the reset sequence */
 219
 220         *buf_ptr++ = IUU_RST_SET;
 221         *buf_ptr++ = IUU_DELAY_MS;
 222         *buf_ptr++ = wt;
 223         *buf_ptr = IUU_RST_CLEAR;
 224
 225         /* send the sequence */
 226
 227         usb_fill_bulk_urb(port->write_urb,
 228                           port->serial->dev,
 229                           usb_sndbulkpipe(port->serial->dev,
 230                                           port->bulk_out_endpointAddress),
 231                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
 232         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 233         priv->reset = 0;
 234         return result;
 235 }
 236
 237 /* Status Function
 238  * Return value is
 239  * 0x00 = no card
 240  * 0x01 = smartcard
 241  * 0x02 = sim card
 242  */
 243 static void iuu_update_status_callback(struct urb *urb)
 244 {
 245         struct usb_serial_port *port = urb->context;
 246         struct iuu_private *priv = usb_get_serial_port_data(port);
 247         u8 *st;
 248         dbg("%s - enter", __func__);
 249
 250         if (urb->status) {
 251                 dbg("%s - urb->status = %d", __func__, urb->status);
 252                 /* error stop all */
 253                 return;
 254         }
 255
 256         st = urb->transfer_buffer;
 257         dbg("%s - enter", __func__);
 258         if (urb->actual_length == 1) {
 259                 switch (st[0]) {
 260                 case 0x1:
 261                         priv->tiostatus = iuu_cardout;
 262                         break;
 263                 case 0x0:
 264                         priv->tiostatus = iuu_cardin;
 265                         break;
 266                 default:
 267                         priv->tiostatus = iuu_cardin;
 268                 }
 269         }
 270         iuu_rxcmd(urb);
 271 }
 272
 273 static void iuu_status_callback(struct urb *urb)
 274 {
 275         struct usb_serial_port *port = urb->context;
 276         int result;
 277         dbg("%s - enter", __func__);
 278
 279         dbg("%s - urb->status = %d", __func__, urb->status);
 280         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 281                           usb_rcvbulkpipe(port->serial->dev,
 282                                           port->bulk_in_endpointAddress),
 283                           port->read_urb->transfer_buffer, 256,
 284                           iuu_update_status_callback, port);
 285         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 286 }
 287
 288 static int iuu_status(struct usb_serial_port *port)
 289 {
 290         int result;
 291
 292         dbg("%s - enter", __func__);
 293
 294         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
 295         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 296                           usb_sndbulkpipe(port->serial->dev,
 297                                           port->bulk_out_endpointAddress),
 298                           port->write_urb->transfer_buffer, 1,
 299                           iuu_status_callback, port);
 300         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 301         return result;
 302
 303 }
 304
 305 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 306 {
 307         int status;
 308         struct usb_serial *serial = port->serial;
 309         int actual = 0;
 310
 311         dbg("%s - enter", __func__);
 312
 313         /* send the data out the bulk port */
 314
 315         status =
 316             usb_bulk_msg(serial->dev,
 317                          usb_sndbulkpipe(serial->dev,
 318                                          port->bulk_out_endpointAddress), buf,
 319                          count, &actual, HZ * 1);
 320
 321         if (status != IUU_OPERATION_OK) {
 322                 dbg("%s - error = %2x", __func__, status);
 323         } else {
 324                 dbg("%s - write OK !", __func__);
 325         }
 326         return status;
 327 }
 328
 329 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 330 {
 331         int status;
 332         struct usb_serial *serial = port->serial;
 333         int actual = 0;
 334
 335         dbg("%s - enter", __func__);
 336
 337         /* send the data out the bulk port */
 338
 339         status =
 340             usb_bulk_msg(serial->dev,
 341                          usb_rcvbulkpipe(serial->dev,
 342                                          port->bulk_in_endpointAddress), buf,
 343                          count, &actual, HZ * 1);
 344
 345         if (status != IUU_OPERATION_OK) {
 346                 dbg("%s - error = %2x", __func__, status);
 347         } else {
 348                 dbg("%s - read OK !", __func__);
 349         }
 350
 351         return status;
 352 }
 353
 354 static int iuu_led(struct usb_serial_port *port, unsigned int R,
 355                    unsigned int G, unsigned int B, u8 f)
 356 {
 357         int status;
 358         u8 *buf;
 359         buf = kmalloc(8, GFP_KERNEL);
 360         if (!buf)
 361                 return -ENOMEM;
 362
 363         dbg("%s - enter", __func__);
 364
 365         buf[0] = IUU_SET_LED;
 366         buf[1] = R & 0xFF;
 367         buf[2] = (R >> 8) & 0xFF;
 368         buf[3] = G & 0xFF;
 369         buf[4] = (G >> 8) & 0xFF;
 370         buf[5] = B & 0xFF;
 371         buf[6] = (B >> 8) & 0xFF;
 372         buf[7] = f;
 373         status = bulk_immediate(port, buf, 8);
 374         kfree(buf);
 375         if (status != IUU_OPERATION_OK)
 376                 dbg("%s - led error status = %2x", __func__, status);
 377         else
 378                 dbg("%s - led OK !", __func__);
 379         return IUU_OPERATION_OK;
 380 }
 381
 382 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 383                                  u8 b2, u8 freq)
 384 {
 385         *buf++ = IUU_SET_LED;
 386         *buf++ = r1;
 387         *buf++ = r2;
 388         *buf++ = g1;
 389         *buf++ = g2;
 390         *buf++ = b1;
 391         *buf++ = b2;
 392         *buf = freq;
 393 }
 394
 395 static void iuu_led_activity_on(struct urb *urb)
 396 {
 397         struct usb_serial_port *port = urb->context;
 398         int result;
 399         char *buf_ptr = port->write_urb->transfer_buffer;
 400         *buf_ptr++ = IUU_SET_LED;
 401         if (xmas == 1) {
 402                 get_random_bytes(buf_ptr, 6);
 403                 *(buf_ptr+7) = 1;
 404         } else {
 405                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
 406         }
 407
 408         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 409                           usb_sndbulkpipe(port->serial->dev,
 410                                           port->bulk_out_endpointAddress),
 411                           port->write_urb->transfer_buffer, 8 ,
 412                           iuu_rxcmd, port);
 413         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 414 }
 415
 416 static void iuu_led_activity_off(struct urb *urb)
 417 {
 418         struct usb_serial_port *port = urb->context;
 419         int result;
 420         char *buf_ptr = port->write_urb->transfer_buffer;
 421         if (xmas == 1) {
 422                 iuu_rxcmd(urb);
 423                 return;
 424         } else {
 425                 *buf_ptr++ = IUU_SET_LED;
 426                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 427         }
 428         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 429                           usb_sndbulkpipe(port->serial->dev,
 430                                           port->bulk_out_endpointAddress),
 431                           port->write_urb->transfer_buffer, 8 ,
 432                           iuu_rxcmd, port);
 433         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 434 }
 435
 436
 437
 438 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
 439 {
 440         int status;
 441         struct iuu_private *priv = usb_get_serial_port_data(port);
 442         int Count = 0;
 443         u8 FrqGenAdr = 0x69;
 444         u8 DIV = 0;             /* 8bit */
 445         u8 XDRV = 0;            /* 8bit */
 446         u8 PUMP = 0;            /* 3bit */
 447         u8 PBmsb = 0;           /* 2bit */
 448         u8 PBlsb = 0;           /* 8bit */
 449         u8 PO = 0;              /* 1bit */
 450         u8 Q = 0;               /* 7bit */
 451         /* 24bit = 3bytes */
 452         unsigned int P = 0;
 453         unsigned int P2 = 0;
 454         int frq = (int)dwFrq;
 455
 456         dbg("%s - enter", __func__);
 457
 458         if (frq == 0) {
 459                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
 460                 priv->buf[Count++] = FrqGenAdr << 1;
 461                 priv->buf[Count++] = 0x09;
 462                 priv->buf[Count++] = 0x00;
 463
 464                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
 465                 if (status != 0) {
 466                         dbg("%s - write error ", __func__);
 467                         return status;
 468                 }
 469         } else if (frq == 3579000) {
 470                 DIV = 100;
 471                 P = 1193;
 472                 Q = 40;
 473                 XDRV = 0;
 474         } else if (frq == 3680000) {
 475                 DIV = 105;
 476                 P = 161;
 477                 Q = 5;
 478                 XDRV = 0;
 479         } else if (frq == 6000000) {
 480                 DIV = 66;
 481                 P = 66;
 482                 Q = 2;
 483                 XDRV = 0x28;
 484         } else {
 485                 unsigned int result = 0;
 486                 unsigned int tmp = 0;
 487                 unsigned int check;
 488                 unsigned int check2;
 489                 char found = 0x00;
 490                 unsigned int lQ = 2;
 491                 unsigned int lP = 2055;
 492                 unsigned int lDiv = 4;
 493
 494                 for (lQ = 2; lQ <= 47 && !found; lQ++)
 495                         for (lP = 2055; lP >= 8 && !found; lP--)
 496                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
 497                                         tmp = (12000000 / lDiv) * (lP / lQ);
 498                                         if (abs((int)(tmp - frq)) <
 499                                             abs((int)(frq - result))) {
 500                                                 check2 = (12000000 / lQ);
 501                                                 if (check2 < 250000)
 502                                                         continue;
 503                                                 check = (12000000 / lQ) * lP;
 504                                                 if (check > 400000000)
 505                                                         continue;
 506                                                 if (check < 100000000)
 507                                                         continue;
 508                                                 if (lDiv < 4 || lDiv > 127)
 509                                                         continue;
 510                                                 result = tmp;
 511                                                 P = lP;
 512                                                 DIV = lDiv;
 513                                                 Q = lQ;
 514                                                 if (result == frq)
 515                                                         found = 0x01;
 516                                         }
 517                                 }
 518         }
 519         P2 = ((P - PO) / 2) - 4;
 520         DIV = DIV;
 521         PUMP = 0x04;
 522         PBmsb = (P2 >> 8 & 0x03);
 523         PBlsb = P2 & 0xFF;
 524         PO = (P >> 10) & 0x01;
 525         Q = Q - 2;
 526
 527         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 528         priv->buf[Count++] = FrqGenAdr << 1;
 529         priv->buf[Count++] = 0x09;
 530         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
 531         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 532         priv->buf[Count++] = FrqGenAdr << 1;
 533         priv->buf[Count++] = 0x0C;
 534         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
 535         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 536         priv->buf[Count++] = FrqGenAdr << 1;
 537         priv->buf[Count++] = 0x12;
 538         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
 539         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 540         priv->buf[Count++] = FrqGenAdr << 1;
 541         priv->buf[Count++] = 0x13;
 542         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
 543         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 544         priv->buf[Count++] = FrqGenAdr << 1;
 545         priv->buf[Count++] = 0x40;
 546         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
 547                              (PBmsb & 0x03);    /* Adr = 0x40 */
 548         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 549         priv->buf[Count++] = FrqGenAdr << 1;
 550         priv->buf[Count++] = 0x41;
 551         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
 552         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 553         priv->buf[Count++] = FrqGenAdr << 1;
 554         priv->buf[Count++] = 0x42;
 555         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
 556         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 557         priv->buf[Count++] = FrqGenAdr << 1;
 558         priv->buf[Count++] = 0x44;
 559         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
 560         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 561         priv->buf[Count++] = FrqGenAdr << 1;
 562         priv->buf[Count++] = 0x45;
 563         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
 564         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 565         priv->buf[Count++] = FrqGenAdr << 1;
 566         priv->buf[Count++] = 0x46;
 567         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
 568         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 569         priv->buf[Count++] = FrqGenAdr << 1;
 570         priv->buf[Count++] = 0x47;
 571         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
 572
 573         status = bulk_immediate(port, (u8 *) priv->buf, Count);
 574         if (status != IUU_OPERATION_OK)
 575                 dbg("%s - write error ", __func__);
 576         return status;
 577 }
 578
 579 static int iuu_uart_flush(struct usb_serial_port *port)
 580 {
 581         int i;
 582         int status;
 583         u8 rxcmd = IUU_UART_RX;
 584         struct iuu_private *priv = usb_get_serial_port_data(port);
 585
 586         dbg("%s - enter", __func__);
 587
 588         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 589                 return -EIO;
 590
 591         for (i = 0; i < 2; i++) {
 592                 status = bulk_immediate(port, &rxcmd, 1);
 593                 if (status != IUU_OPERATION_OK) {
 594                         dbg("%s - uart_flush_write error", __func__);
 595                         return status;
 596                 }
 597
 598                 status = read_immediate(port, &priv->len, 1);
 599                 if (status != IUU_OPERATION_OK) {
 600                         dbg("%s - uart_flush_read error", __func__);
 601                         return status;
 602                 }
 603
 604                 if (priv->len > 0) {
 605                         dbg("%s - uart_flush datalen is : %i ", __func__,
 606                             priv->len);
 607                         status = read_immediate(port, priv->buf, priv->len);
 608                         if (status != IUU_OPERATION_OK) {
 609                                 dbg("%s - uart_flush_read error", __func__);
 610                                 return status;
 611                         }
 612                 }
 613         }
 614         dbg("%s - uart_flush_read OK!", __func__);
 615         iuu_led(port, 0, 0xF000, 0, 0xFF);
 616         return status;
 617 }
 618
 619 static void read_buf_callback(struct urb *urb)
 620 {
 621         struct usb_serial_port *port = urb->context;
 622         unsigned char *data = urb->transfer_buffer;
 623         struct tty_struct *tty;
 624         dbg("%s - urb->status = %d", __func__, urb->status);
 625
 626         if (urb->status) {
 627                 dbg("%s - urb->status = %d", __func__, urb->status);
 628                 if (urb->status == -EPROTO) {
 629                         /* reschedule needed */
 630                 }
 631                 return;
 632         }
 633
 634         dbg("%s - %i chars to write", __func__, urb->actual_length);
 635         tty = port->port.tty;
 636         if (data == NULL)
 637                 dbg("%s - data is NULL !!!", __func__);
 638         if (tty && urb->actual_length && data) {
 639                 tty_insert_flip_string(tty, data, urb->actual_length);
 640                 tty_flip_buffer_push(tty);
 641         }
 642         iuu_led_activity_on(urb);
 643 }
 644
 645 static int iuu_bulk_write(struct usb_serial_port *port)
 646 {
 647         struct iuu_private *priv = usb_get_serial_port_data(port);
 648         unsigned long flags;
 649         int result;
 650         int i;
 651         char *buf_ptr = port->write_urb->transfer_buffer;
 652         dbg("%s - enter", __func__);
 653
 654         *buf_ptr++ = IUU_UART_ESC;
 655         *buf_ptr++ = IUU_UART_TX;
 656         *buf_ptr++ = priv->writelen;
 657
 658         memcpy(buf_ptr, priv->writebuf,
 659                priv->writelen);
 660         if (debug == 1) {
 661                 for (i = 0; i < priv->writelen; i++)
 662                         sprintf(priv->dbgbuf + i*2 ,
 663                                 "%02X", priv->writebuf[i]);
 664                 priv->dbgbuf[priv->writelen+i*2] = 0;
 665                 dbg("%s - writing %i chars : %s", __func__,
 666                     priv->writelen, priv->dbgbuf);
 667         }
 668         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 669                           usb_sndbulkpipe(port->serial->dev,
 670                                           port->bulk_out_endpointAddress),
 671                           port->write_urb->transfer_buffer, priv->writelen + 3,
 672                           iuu_rxcmd, port);
 673         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 674         spin_lock_irqsave(&priv->lock, flags);
 675         priv->writelen = 0;
 676         spin_unlock_irqrestore(&priv->lock, flags);
 677         usb_serial_port_softint(port);
 678         return result;
 679 }
 680
 681 static int iuu_read_buf(struct usb_serial_port *port, int len)
 682 {
 683         int result;
 684         dbg("%s - enter", __func__);
 685
 686         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 687                           usb_rcvbulkpipe(port->serial->dev,
 688                                           port->bulk_in_endpointAddress),
 689                           port->read_urb->transfer_buffer, len,
 690                           read_buf_callback, port);
 691         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 692         return result;
 693 }
 694
 695 static void iuu_uart_read_callback(struct urb *urb)
 696 {
 697         struct usb_serial_port *port = urb->context;
 698         struct iuu_private *priv = usb_get_serial_port_data(port);
 699         unsigned long flags;
 700         int status;
 701         int error = 0;
 702         int len = 0;
 703         unsigned char *data = urb->transfer_buffer;
 704         priv->poll++;
 705
 706         dbg("%s - enter", __func__);
 707
 708         if (urb->status) {
 709                 dbg("%s - urb->status = %d", __func__, urb->status);
 710                 /* error stop all */
 711                 return;
 712         }
 713         if (data == NULL)
 714                 dbg("%s - data is NULL !!!", __func__);
 715
 716         if (urb->actual_length == 1  && data != NULL)
 717                 len = (int) data[0];
 718
 719         if (urb->actual_length > 1) {
 720                 dbg("%s - urb->actual_length = %i", __func__,
 721                     urb->actual_length);
 722                 error = 1;
 723                 return;
 724         }
 725         /* if len > 0 call readbuf */
 726
 727         if (len > 0 && error == 0) {
 728                 dbg("%s - call read buf - len to read is %i ",
 729                         __func__, len);
 730                 status = iuu_read_buf(port, len);
 731                 return;
 732         }
 733         /* need to update status  ? */
 734         if (priv->poll > 99) {
 735                 status = iuu_status(port);
 736                 priv->poll = 0;
 737                 return;
 738         }
 739
 740         /* reset waiting ? */
 741
 742         if (priv->reset == 1) {
 743                 status = iuu_reset(port, 0xC);
 744                 return;
 745         }
 746         /* Writebuf is waiting */
 747         spin_lock_irqsave(&priv->lock, flags);
 748         if (priv->writelen > 0) {
 749                 spin_unlock_irqrestore(&priv->lock, flags);
 750                 status = iuu_bulk_write(port);
 751                 return;
 752         }
 753         spin_unlock_irqrestore(&priv->lock, flags);
 754         /* if nothing to write call again rxcmd */
 755         dbg("%s - rxcmd recall", __func__);
 756         iuu_led_activity_off(urb);
 757 }
 758
 759 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
 760                           const u8 *buf, int count)
 761 {
 762         struct iuu_private *priv = usb_get_serial_port_data(port);
 763         unsigned long flags;
 764         dbg("%s - enter", __func__);
 765
 766         if (count > 256)
 767                 return -ENOMEM;
 768
 769         spin_lock_irqsave(&priv->lock, flags);
 770         if (priv->writelen > 0) {
 771                 /* buffer already filled but not commited */
 772                 spin_unlock_irqrestore(&priv->lock, flags);
 773                 return (0);
 774         }
 775         /* fill the buffer */
 776         memcpy(priv->writebuf, buf, count);
 777         priv->writelen = count;
 778         spin_unlock_irqrestore(&priv->lock, flags);
 779
 780         return (count);
 781 }
 782
 783 static void read_rxcmd_callback(struct urb *urb)
 784 {
 785         struct usb_serial_port *port = urb->context;
 786         int result;
 787         dbg("%s - enter", __func__);
 788
 789         dbg("%s - urb->status = %d", __func__, urb->status);
 790
 791         if (urb->status) {
 792                 dbg("%s - urb->status = %d", __func__, urb->status);
 793                 /* error stop all */
 794                 return;
 795         }
 796
 797         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 798                           usb_rcvbulkpipe(port->serial->dev,
 799                                           port->bulk_in_endpointAddress),
 800                           port->read_urb->transfer_buffer, 256,
 801                           iuu_uart_read_callback, port);
 802         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 803         dbg("%s - submit result = %d", __func__, result);
 804         return;
 805 }
 806
 807 static int iuu_uart_on(struct usb_serial_port *port)
 808 {
 809         int status;
 810         u8 *buf;
 811
 812         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
 813
 814         if (!buf)
 815                 return -ENOMEM;
 816
 817         buf[0] = IUU_UART_ENABLE;
 818         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
 819         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
 820         buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
 821
 822         status = bulk_immediate(port, buf, 4);
 823         if (status != IUU_OPERATION_OK) {
 824                 dbg("%s - uart_on error", __func__);
 825                 goto uart_enable_failed;
 826         }
 827         /*  iuu_reset() the card after iuu_uart_on() */
 828         status = iuu_uart_flush(port);
 829         if (status != IUU_OPERATION_OK)
 830                 dbg("%s - uart_flush error", __func__);
 831 uart_enable_failed:
 832         kfree(buf);
 833         return status;
 834 }
 835
 836 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
 837 static int iuu_uart_off(struct usb_serial_port *port)
 838 {
 839         int status;
 840         u8 *buf;
 841         buf = kmalloc(1, GFP_KERNEL);
 842         if (!buf)
 843                 return -ENOMEM;
 844         buf[0] = IUU_UART_DISABLE;
 845
 846         status = bulk_immediate(port, buf, 1);
 847         if (status != IUU_OPERATION_OK)
 848                 dbg("%s - uart_off error", __func__);
 849
 850         kfree(buf);
 851         return status;
 852 }
 853
 854 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
 855                          u32 *actual, u8 parity)
 856 {
 857         int status;
 858         u8 *dataout;
 859         u8 DataCount = 0;
 860         u8 T1Frekvens = 0;
 861         u8 T1reload = 0;
 862         unsigned int T1FrekvensHZ = 0;
 863
 864         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
 865
 866         if (!dataout)
 867                 return -ENOMEM;
 868
 869         if (baud < 1200 || baud > 230400) {
 870                 kfree(dataout);
 871                 return IUU_INVALID_PARAMETER;
 872         }
 873         if (baud > 977) {
 874                 T1Frekvens = 3;
 875                 T1FrekvensHZ = 500000;
 876         }
 877
 878         if (baud > 3906) {
 879                 T1Frekvens = 2;
 880                 T1FrekvensHZ = 2000000;
 881         }
 882
 883         if (baud > 11718) {
 884                 T1Frekvens = 1;
 885                 T1FrekvensHZ = 6000000;
 886         }
 887
 888         if (baud > 46875) {
 889                 T1Frekvens = 0;
 890                 T1FrekvensHZ = 24000000;
 891         }
 892
 893         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 894
 895         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
 896         dataout[DataCount++] = IUU_UART_ESC;
 897         /*  magic number here:  CHANGE_BAUD; */
 898         dataout[DataCount++] = IUU_UART_CHANGE;
 899         dataout[DataCount++] = T1Frekvens;
 900         dataout[DataCount++] = T1reload;
 901
 902         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 903
 904         switch (parity & 0x0F) {
 905         case IUU_PARITY_NONE:
 906                 dataout[DataCount++] = 0x00;
 907                 break;
 908         case IUU_PARITY_EVEN:
 909                 dataout[DataCount++] = 0x01;
 910                 break;
 911         case IUU_PARITY_ODD:
 912                 dataout[DataCount++] = 0x02;
 913                 break;
 914         case IUU_PARITY_MARK:
 915                 dataout[DataCount++] = 0x03;
 916                 break;
 917         case IUU_PARITY_SPACE:
 918                 dataout[DataCount++] = 0x04;
 919                 break;
 920         default:
 921                 kfree(dataout);
 922                 return IUU_INVALID_PARAMETER;
 923                 break;
 924         }
 925
 926         switch (parity & 0xF0) {
 927         case IUU_ONE_STOP_BIT:
 928                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
 929                 break;
 930
 931         case IUU_TWO_STOP_BITS:
 932                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
 933                 break;
 934         default:
 935                 kfree(dataout);
 936                 return IUU_INVALID_PARAMETER;
 937                 break;
 938         }
 939
 940         status = bulk_immediate(port, dataout, DataCount);
 941         if (status != IUU_OPERATION_OK)
 942                 dbg("%s - uart_off error", __func__);
 943         kfree(dataout);
 944         return status;
 945 }
 946
 947 static int set_control_lines(struct usb_device *dev, u8 value)
 948 {
 949         return 0;
 950 }
 951
 952 static void iuu_close(struct tty_struct *tty,
 953                         struct usb_serial_port *port, struct file *filp)
 954 {
 955         /* iuu_led (port,255,0,0,0); */
 956         struct usb_serial *serial;
 957         struct iuu_private *priv = usb_get_serial_port_data(port);
 958         unsigned long flags;
 959         unsigned int c_cflag;
 960
 961         serial = port->serial;
 962         if (!serial)
 963                 return;
 964
 965         dbg("%s - port %d", __func__, port->number);
 966
 967         iuu_uart_off(port);
 968         if (serial->dev) {
 969                 if (tty) {
 970                         c_cflag = tty->termios->c_cflag;
 971                         if (c_cflag & HUPCL) {
 972                                 /* drop DTR and RTS */
 973                                 priv = usb_get_serial_port_data(port);
 974                                 spin_lock_irqsave(&priv->lock, flags);
 975                                 priv->line_control = 0;
 976                                 spin_unlock_irqrestore(&priv->lock, flags);
 977                                 set_control_lines(port->serial->dev, 0);
 978                         }
 979                 }
 980                 /* free writebuf */
 981                 /* shutdown our urbs */
 982                 dbg("%s - shutting down urbs", __func__);
 983                 usb_kill_urb(port->write_urb);
 984                 usb_kill_urb(port->read_urb);
 985                 usb_kill_urb(port->interrupt_in_urb);
 986                 msleep(1000);
 987                 /* wait one second to free all buffers */
 988                 iuu_led(port, 0, 0, 0xF000, 0xFF);
 989                 msleep(1000);
 990                 usb_reset_device(port->serial->dev);
 991         }
 992 }
 993
 994 static int iuu_open(struct tty_struct *tty,
 995                         struct usb_serial_port *port, struct file *filp)
 996 {
 997         struct usb_serial *serial = port->serial;
 998         u8 *buf;
 999         int result;
1000         u32 actual;
1001         unsigned long flags;
1002         struct iuu_private *priv = usb_get_serial_port_data(port);
1003
1004         dbg("%s -  port %d", __func__, port->number);
1005         usb_clear_halt(serial->dev, port->write_urb->pipe);
1006         usb_clear_halt(serial->dev, port->read_urb->pipe);
1007
1008         buf = kmalloc(10, GFP_KERNEL);
1009         if (buf == NULL)
1010                 return -ENOMEM;
1011
1012         /* fixup the endpoint buffer size */
1013         kfree(port->bulk_out_buffer);
1014         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1015         port->bulk_out_size = 512;
1016         kfree(port->bulk_in_buffer);
1017         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1018         port->bulk_in_size = 512;
1019
1020         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1021                 kfree(port->bulk_out_buffer);
1022                 kfree(port->bulk_in_buffer);
1023                 kfree(buf);
1024                 return -ENOMEM;
1025         }
1026
1027         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1028                           usb_sndbulkpipe(port->serial->dev,
1029                                           port->bulk_out_endpointAddress),
1030                           port->bulk_out_buffer, 512,
1031                           NULL, NULL);
1032
1033
1034         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1035                           usb_rcvbulkpipe(port->serial->dev,
1036                                           port->bulk_in_endpointAddress),
1037                           port->bulk_in_buffer, 512,
1038                           NULL, NULL);
1039
1040         /* set the termios structure */
1041         spin_lock_irqsave(&priv->lock, flags);
1042         if (tty && !priv->termios_initialized) {
1043                 *(tty->termios) = tty_std_termios;
1044                 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1045                                         | TIOCM_CTS | CSTOPB | PARENB;
1046                 tty->termios->c_ispeed = 9600;
1047                 tty->termios->c_ospeed = 9600;
1048                 tty->termios->c_lflag = 0;
1049                 tty->termios->c_oflag = 0;
1050                 tty->termios->c_iflag = 0;
1051                 priv->termios_initialized = 1;
1052                 tty->low_latency = 1;
1053                 priv->poll = 0;
1054          }
1055         spin_unlock_irqrestore(&priv->lock, flags);
1056
1057         /* initialize writebuf */
1058 #define FISH(a, b, c, d) do { \
1059         result = usb_control_msg(port->serial->dev,     \
1060                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1061                                 b, a, c, d, buf, 1, 1000); \
1062         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1063                                 buf[0]); } while (0);
1064
1065 #define SOUP(a, b, c, d)  do { \
1066         result = usb_control_msg(port->serial->dev,     \
1067                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1068                                 b, a, c, d, NULL, 0, 1000); \
1069         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1070
1071         /*  This is not UART related but IUU USB driver related or something */
1072         /*  like that. Basically no IUU will accept any commands from the USB */
1073         /*  host unless it has received the following message */
1074         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1075
1076         SOUP(0x03, 0x02, 0x02, 0x0);
1077         kfree(buf);
1078         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1079         iuu_uart_on(port);
1080         if (boost < 100)
1081                 boost = 100;
1082         switch (clockmode) {
1083         case 2:         /*  3.680 Mhz */
1084                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1085                 result =
1086                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1087                                   IUU_PARITY_EVEN);
1088                 break;
1089         case 3:         /*  6.00 Mhz */
1090                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1091                 result =
1092                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1093                                   IUU_PARITY_EVEN);
1094                 break;
1095         default:                /*  3.579 Mhz */
1096                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1097                 result =
1098                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1099                                   IUU_PARITY_EVEN);
1100         }
1101
1102         /* set the cardin cardout signals */
1103         switch (cdmode) {
1104         case 0:
1105                 iuu_cardin = 0;
1106                 iuu_cardout = 0;
1107                 break;
1108         case 1:
1109                 iuu_cardin = TIOCM_CD;
1110                 iuu_cardout =  0;
1111                 break;
1112         case 2:
1113                 iuu_cardin = 0;
1114                 iuu_cardout = TIOCM_CD;
1115                 break;
1116         case 3:
1117                 iuu_cardin = TIOCM_DSR;
1118                 iuu_cardout = 0;
1119                 break;
1120         case 4:
1121                 iuu_cardin = 0;
1122                 iuu_cardout = TIOCM_DSR;
1123                 break;
1124         case 5:
1125                 iuu_cardin = TIOCM_CTS;
1126                 iuu_cardout = 0;
1127                 break;
1128         case 6:
1129                 iuu_cardin = 0;
1130                 iuu_cardout = TIOCM_CTS;
1131                 break;
1132         case 7:
1133                 iuu_cardin = TIOCM_RNG;
1134                 iuu_cardout = 0;
1135                 break;
1136         case 8:
1137                 iuu_cardin = 0;
1138                 iuu_cardout = TIOCM_RNG;
1139         }
1140
1141         iuu_uart_flush(port);
1142
1143         dbg("%s - initialization done", __func__);
1144
1145         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1146         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1147                           usb_sndbulkpipe(port->serial->dev,
1148                                           port->bulk_out_endpointAddress),
1149                           port->write_urb->transfer_buffer, 1,
1150                           read_rxcmd_callback, port);
1151         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1152
1153         if (result) {
1154                 dev_err(&port->dev, "%s - failed submitting read urb,"
1155                         " error %d\n", __func__, result);
1156                 iuu_close(tty, port, NULL);
1157                 return -EPROTO;
1158         } else {
1159                 dbg("%s - rxcmd OK", __func__);
1160         }
1161         return result;
1162 }
1163
1164 static struct usb_serial_driver iuu_device = {
1165         .driver = {
1166                    .owner = THIS_MODULE,
1167                    .name = "iuu_phoenix",
1168                    },
1169         .id_table = id_table,
1170         .num_ports = 1,
1171         .open = iuu_open,
1172         .close = iuu_close,
1173         .write = iuu_uart_write,
1174         .read_bulk_callback = iuu_uart_read_callback,
1175         .tiocmget = iuu_tiocmget,
1176         .tiocmset = iuu_tiocmset,
1177         .attach = iuu_startup,
1178         .shutdown = iuu_shutdown,
1179 };
1180
1181 static int __init iuu_init(void)
1182 {
1183         int retval;
1184         retval = usb_serial_register(&iuu_device);
1185         if (retval)
1186                 goto failed_usb_serial_register;
1187         retval = usb_register(&iuu_driver);
1188         if (retval)
1189                 goto failed_usb_register;
1190         info(DRIVER_DESC " " DRIVER_VERSION);
1191         return 0;
1192 failed_usb_register:
1193         usb_serial_deregister(&iuu_device);
1194 failed_usb_serial_register:
1195         return retval;
1196 }
1197
1198 static void __exit iuu_exit(void)
1199 {
1200         usb_deregister(&iuu_driver);
1201         usb_serial_deregister(&iuu_device);
1202 }
1203
1204 module_init(iuu_init);
1205 module_exit(iuu_exit);
1206
1207 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1208
1209 MODULE_DESCRIPTION(DRIVER_DESC);
1210 MODULE_LICENSE("GPL");
1211
1212 MODULE_VERSION(DRIVER_VERSION);
1213 module_param(debug, bool, S_IRUGO | S_IWUSR);
1214 MODULE_PARM_DESC(debug, "Debug enabled or not");
1215
1216 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1217 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1218
1219 module_param(boost, int, S_IRUGO | S_IWUSR);
1220 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1221
1222 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1223 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1224
1225 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1226 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1227                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");