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         int status = urb->status;
 194
 195         dbg("%s - enter", __func__);
 196
 197         if (status) {
 198                 dbg("%s - status = %d", __func__, status);
 199                 /* error stop all */
 200                 return;
 201         }
 202
 203
 204         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
 205         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 206                           usb_sndbulkpipe(port->serial->dev,
 207                                           port->bulk_out_endpointAddress),
 208                           port->write_urb->transfer_buffer, 1,
 209                           read_rxcmd_callback, port);
 210         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 211 }
 212
 213 static int iuu_reset(struct usb_serial_port *port, u8 wt)
 214 {
 215         struct iuu_private *priv = usb_get_serial_port_data(port);
 216         int result;
 217         char *buf_ptr = port->write_urb->transfer_buffer;
 218         dbg("%s - enter", __func__);
 219
 220         /* Prepare the reset sequence */
 221
 222         *buf_ptr++ = IUU_RST_SET;
 223         *buf_ptr++ = IUU_DELAY_MS;
 224         *buf_ptr++ = wt;
 225         *buf_ptr = IUU_RST_CLEAR;
 226
 227         /* send the sequence */
 228
 229         usb_fill_bulk_urb(port->write_urb,
 230                           port->serial->dev,
 231                           usb_sndbulkpipe(port->serial->dev,
 232                                           port->bulk_out_endpointAddress),
 233                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
 234         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 235         priv->reset = 0;
 236         return result;
 237 }
 238
 239 /* Status Function
 240  * Return value is
 241  * 0x00 = no card
 242  * 0x01 = smartcard
 243  * 0x02 = sim card
 244  */
 245 static void iuu_update_status_callback(struct urb *urb)
 246 {
 247         struct usb_serial_port *port = urb->context;
 248         struct iuu_private *priv = usb_get_serial_port_data(port);
 249         u8 *st;
 250         int status = urb->status;
 251
 252         dbg("%s - enter", __func__);
 253
 254         if (status) {
 255                 dbg("%s - status = %d", __func__, status);
 256                 /* error stop all */
 257                 return;
 258         }
 259
 260         st = urb->transfer_buffer;
 261         dbg("%s - enter", __func__);
 262         if (urb->actual_length == 1) {
 263                 switch (st[0]) {
 264                 case 0x1:
 265                         priv->tiostatus = iuu_cardout;
 266                         break;
 267                 case 0x0:
 268                         priv->tiostatus = iuu_cardin;
 269                         break;
 270                 default:
 271                         priv->tiostatus = iuu_cardin;
 272                 }
 273         }
 274         iuu_rxcmd(urb);
 275 }
 276
 277 static void iuu_status_callback(struct urb *urb)
 278 {
 279         struct usb_serial_port *port = urb->context;
 280         int result;
 281         int status = urb->status;
 282
 283         dbg("%s - status = %d", __func__, status);
 284         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 285                           usb_rcvbulkpipe(port->serial->dev,
 286                                           port->bulk_in_endpointAddress),
 287                           port->read_urb->transfer_buffer, 256,
 288                           iuu_update_status_callback, port);
 289         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 290 }
 291
 292 static int iuu_status(struct usb_serial_port *port)
 293 {
 294         int result;
 295
 296         dbg("%s - enter", __func__);
 297
 298         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
 299         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 300                           usb_sndbulkpipe(port->serial->dev,
 301                                           port->bulk_out_endpointAddress),
 302                           port->write_urb->transfer_buffer, 1,
 303                           iuu_status_callback, port);
 304         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 305         return result;
 306
 307 }
 308
 309 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 310 {
 311         int status;
 312         struct usb_serial *serial = port->serial;
 313         int actual = 0;
 314
 315         dbg("%s - enter", __func__);
 316
 317         /* send the data out the bulk port */
 318
 319         status =
 320             usb_bulk_msg(serial->dev,
 321                          usb_sndbulkpipe(serial->dev,
 322                                          port->bulk_out_endpointAddress), buf,
 323                          count, &actual, HZ * 1);
 324
 325         if (status != IUU_OPERATION_OK)
 326                 dbg("%s - error = %2x", __func__, status);
 327         else
 328                 dbg("%s - write OK !", __func__);
 329         return status;
 330 }
 331
 332 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 333 {
 334         int status;
 335         struct usb_serial *serial = port->serial;
 336         int actual = 0;
 337
 338         dbg("%s - enter", __func__);
 339
 340         /* send the data out the bulk port */
 341
 342         status =
 343             usb_bulk_msg(serial->dev,
 344                          usb_rcvbulkpipe(serial->dev,
 345                                          port->bulk_in_endpointAddress), buf,
 346                          count, &actual, HZ * 1);
 347
 348         if (status != IUU_OPERATION_OK)
 349                 dbg("%s - error = %2x", __func__, status);
 350         else
 351                 dbg("%s - read OK !", __func__);
 352         return status;
 353 }
 354
 355 static int iuu_led(struct usb_serial_port *port, unsigned int R,
 356                    unsigned int G, unsigned int B, u8 f)
 357 {
 358         int status;
 359         u8 *buf;
 360         buf = kmalloc(8, GFP_KERNEL);
 361         if (!buf)
 362                 return -ENOMEM;
 363
 364         dbg("%s - enter", __func__);
 365
 366         buf[0] = IUU_SET_LED;
 367         buf[1] = R & 0xFF;
 368         buf[2] = (R >> 8) & 0xFF;
 369         buf[3] = G & 0xFF;
 370         buf[4] = (G >> 8) & 0xFF;
 371         buf[5] = B & 0xFF;
 372         buf[6] = (B >> 8) & 0xFF;
 373         buf[7] = f;
 374         status = bulk_immediate(port, buf, 8);
 375         kfree(buf);
 376         if (status != IUU_OPERATION_OK)
 377                 dbg("%s - led error status = %2x", __func__, status);
 378         else
 379                 dbg("%s - led OK !", __func__);
 380         return IUU_OPERATION_OK;
 381 }
 382
 383 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 384                                  u8 b2, u8 freq)
 385 {
 386         *buf++ = IUU_SET_LED;
 387         *buf++ = r1;
 388         *buf++ = r2;
 389         *buf++ = g1;
 390         *buf++ = g2;
 391         *buf++ = b1;
 392         *buf++ = b2;
 393         *buf = freq;
 394 }
 395
 396 static void iuu_led_activity_on(struct urb *urb)
 397 {
 398         struct usb_serial_port *port = urb->context;
 399         int result;
 400         char *buf_ptr = port->write_urb->transfer_buffer;
 401         *buf_ptr++ = IUU_SET_LED;
 402         if (xmas == 1) {
 403                 get_random_bytes(buf_ptr, 6);
 404                 *(buf_ptr+7) = 1;
 405         } else {
 406                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
 407         }
 408
 409         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 410                           usb_sndbulkpipe(port->serial->dev,
 411                                           port->bulk_out_endpointAddress),
 412                           port->write_urb->transfer_buffer, 8 ,
 413                           iuu_rxcmd, port);
 414         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 415 }
 416
 417 static void iuu_led_activity_off(struct urb *urb)
 418 {
 419         struct usb_serial_port *port = urb->context;
 420         int result;
 421         char *buf_ptr = port->write_urb->transfer_buffer;
 422         if (xmas == 1) {
 423                 iuu_rxcmd(urb);
 424                 return;
 425         } else {
 426                 *buf_ptr++ = IUU_SET_LED;
 427                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 428         }
 429         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 430                           usb_sndbulkpipe(port->serial->dev,
 431                                           port->bulk_out_endpointAddress),
 432                           port->write_urb->transfer_buffer, 8 ,
 433                           iuu_rxcmd, port);
 434         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 435 }
 436
 437
 438
 439 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
 440 {
 441         int status;
 442         struct iuu_private *priv = usb_get_serial_port_data(port);
 443         int Count = 0;
 444         u8 FrqGenAdr = 0x69;
 445         u8 DIV = 0;             /* 8bit */
 446         u8 XDRV = 0;            /* 8bit */
 447         u8 PUMP = 0;            /* 3bit */
 448         u8 PBmsb = 0;           /* 2bit */
 449         u8 PBlsb = 0;           /* 8bit */
 450         u8 PO = 0;              /* 1bit */
 451         u8 Q = 0;               /* 7bit */
 452         /* 24bit = 3bytes */
 453         unsigned int P = 0;
 454         unsigned int P2 = 0;
 455         int frq = (int)dwFrq;
 456
 457         dbg("%s - enter", __func__);
 458
 459         if (frq == 0) {
 460                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
 461                 priv->buf[Count++] = FrqGenAdr << 1;
 462                 priv->buf[Count++] = 0x09;
 463                 priv->buf[Count++] = 0x00;
 464
 465                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
 466                 if (status != 0) {
 467                         dbg("%s - write error ", __func__);
 468                         return status;
 469                 }
 470         } else if (frq == 3579000) {
 471                 DIV = 100;
 472                 P = 1193;
 473                 Q = 40;
 474                 XDRV = 0;
 475         } else if (frq == 3680000) {
 476                 DIV = 105;
 477                 P = 161;
 478                 Q = 5;
 479                 XDRV = 0;
 480         } else if (frq == 6000000) {
 481                 DIV = 66;
 482                 P = 66;
 483                 Q = 2;
 484                 XDRV = 0x28;
 485         } else {
 486                 unsigned int result = 0;
 487                 unsigned int tmp = 0;
 488                 unsigned int check;
 489                 unsigned int check2;
 490                 char found = 0x00;
 491                 unsigned int lQ = 2;
 492                 unsigned int lP = 2055;
 493                 unsigned int lDiv = 4;
 494
 495                 for (lQ = 2; lQ <= 47 && !found; lQ++)
 496                         for (lP = 2055; lP >= 8 && !found; lP--)
 497                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
 498                                         tmp = (12000000 / lDiv) * (lP / lQ);
 499                                         if (abs((int)(tmp - frq)) <
 500                                             abs((int)(frq - result))) {
 501                                                 check2 = (12000000 / lQ);
 502                                                 if (check2 < 250000)
 503                                                         continue;
 504                                                 check = (12000000 / lQ) * lP;
 505                                                 if (check > 400000000)
 506                                                         continue;
 507                                                 if (check < 100000000)
 508                                                         continue;
 509                                                 if (lDiv < 4 || lDiv > 127)
 510                                                         continue;
 511                                                 result = tmp;
 512                                                 P = lP;
 513                                                 DIV = lDiv;
 514                                                 Q = lQ;
 515                                                 if (result == frq)
 516                                                         found = 0x01;
 517                                         }
 518                                 }
 519         }
 520         P2 = ((P - PO) / 2) - 4;
 521         DIV = DIV;
 522         PUMP = 0x04;
 523         PBmsb = (P2 >> 8 & 0x03);
 524         PBlsb = P2 & 0xFF;
 525         PO = (P >> 10) & 0x01;
 526         Q = Q - 2;
 527
 528         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 529         priv->buf[Count++] = FrqGenAdr << 1;
 530         priv->buf[Count++] = 0x09;
 531         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
 532         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 533         priv->buf[Count++] = FrqGenAdr << 1;
 534         priv->buf[Count++] = 0x0C;
 535         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
 536         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 537         priv->buf[Count++] = FrqGenAdr << 1;
 538         priv->buf[Count++] = 0x12;
 539         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
 540         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 541         priv->buf[Count++] = FrqGenAdr << 1;
 542         priv->buf[Count++] = 0x13;
 543         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
 544         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 545         priv->buf[Count++] = FrqGenAdr << 1;
 546         priv->buf[Count++] = 0x40;
 547         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
 548                              (PBmsb & 0x03);    /* Adr = 0x40 */
 549         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 550         priv->buf[Count++] = FrqGenAdr << 1;
 551         priv->buf[Count++] = 0x41;
 552         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
 553         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 554         priv->buf[Count++] = FrqGenAdr << 1;
 555         priv->buf[Count++] = 0x42;
 556         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
 557         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 558         priv->buf[Count++] = FrqGenAdr << 1;
 559         priv->buf[Count++] = 0x44;
 560         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
 561         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 562         priv->buf[Count++] = FrqGenAdr << 1;
 563         priv->buf[Count++] = 0x45;
 564         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
 565         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 566         priv->buf[Count++] = FrqGenAdr << 1;
 567         priv->buf[Count++] = 0x46;
 568         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
 569         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 570         priv->buf[Count++] = FrqGenAdr << 1;
 571         priv->buf[Count++] = 0x47;
 572         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
 573
 574         status = bulk_immediate(port, (u8 *) priv->buf, Count);
 575         if (status != IUU_OPERATION_OK)
 576                 dbg("%s - write error ", __func__);
 577         return status;
 578 }
 579
 580 static int iuu_uart_flush(struct usb_serial_port *port)
 581 {
 582         int i;
 583         int status;
 584         u8 rxcmd = IUU_UART_RX;
 585         struct iuu_private *priv = usb_get_serial_port_data(port);
 586
 587         dbg("%s - enter", __func__);
 588
 589         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 590                 return -EIO;
 591
 592         for (i = 0; i < 2; i++) {
 593                 status = bulk_immediate(port, &rxcmd, 1);
 594                 if (status != IUU_OPERATION_OK) {
 595                         dbg("%s - uart_flush_write error", __func__);
 596                         return status;
 597                 }
 598
 599                 status = read_immediate(port, &priv->len, 1);
 600                 if (status != IUU_OPERATION_OK) {
 601                         dbg("%s - uart_flush_read error", __func__);
 602                         return status;
 603                 }
 604
 605                 if (priv->len > 0) {
 606                         dbg("%s - uart_flush datalen is : %i ", __func__,
 607                             priv->len);
 608                         status = read_immediate(port, priv->buf, priv->len);
 609                         if (status != IUU_OPERATION_OK) {
 610                                 dbg("%s - uart_flush_read error", __func__);
 611                                 return status;
 612                         }
 613                 }
 614         }
 615         dbg("%s - uart_flush_read OK!", __func__);
 616         iuu_led(port, 0, 0xF000, 0, 0xFF);
 617         return status;
 618 }
 619
 620 static void read_buf_callback(struct urb *urb)
 621 {
 622         struct usb_serial_port *port = urb->context;
 623         unsigned char *data = urb->transfer_buffer;
 624         struct tty_struct *tty;
 625         int status = urb->status;
 626
 627         dbg("%s - status = %d", __func__, status);
 628
 629         if (status) {
 630                 if (status == -EPROTO) {
 631                         /* reschedule needed */
 632                 }
 633                 return;
 634         }
 635
 636         dbg("%s - %i chars to write", __func__, urb->actual_length);
 637         tty = tty_port_tty_get(&port->port);
 638         if (data == NULL)
 639                 dbg("%s - data is NULL !!!", __func__);
 640         if (tty && urb->actual_length && data) {
 641                 tty_insert_flip_string(tty, data, urb->actual_length);
 642                 tty_flip_buffer_push(tty);
 643         }
 644         tty_kref_put(tty);
 645         iuu_led_activity_on(urb);
 646 }
 647
 648 static int iuu_bulk_write(struct usb_serial_port *port)
 649 {
 650         struct iuu_private *priv = usb_get_serial_port_data(port);
 651         unsigned long flags;
 652         int result;
 653         int i;
 654         char *buf_ptr = port->write_urb->transfer_buffer;
 655         dbg("%s - enter", __func__);
 656
 657         *buf_ptr++ = IUU_UART_ESC;
 658         *buf_ptr++ = IUU_UART_TX;
 659         *buf_ptr++ = priv->writelen;
 660
 661         memcpy(buf_ptr, priv->writebuf,
 662                priv->writelen);
 663         if (debug == 1) {
 664                 for (i = 0; i < priv->writelen; i++)
 665                         sprintf(priv->dbgbuf + i*2 ,
 666                                 "%02X", priv->writebuf[i]);
 667                 priv->dbgbuf[priv->writelen+i*2] = 0;
 668                 dbg("%s - writing %i chars : %s", __func__,
 669                     priv->writelen, priv->dbgbuf);
 670         }
 671         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 672                           usb_sndbulkpipe(port->serial->dev,
 673                                           port->bulk_out_endpointAddress),
 674                           port->write_urb->transfer_buffer, priv->writelen + 3,
 675                           iuu_rxcmd, port);
 676         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 677         spin_lock_irqsave(&priv->lock, flags);
 678         priv->writelen = 0;
 679         spin_unlock_irqrestore(&priv->lock, flags);
 680         usb_serial_port_softint(port);
 681         return result;
 682 }
 683
 684 static int iuu_read_buf(struct usb_serial_port *port, int len)
 685 {
 686         int result;
 687         dbg("%s - enter", __func__);
 688
 689         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 690                           usb_rcvbulkpipe(port->serial->dev,
 691                                           port->bulk_in_endpointAddress),
 692                           port->read_urb->transfer_buffer, len,
 693                           read_buf_callback, port);
 694         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 695         return result;
 696 }
 697
 698 static void iuu_uart_read_callback(struct urb *urb)
 699 {
 700         struct usb_serial_port *port = urb->context;
 701         struct iuu_private *priv = usb_get_serial_port_data(port);
 702         unsigned long flags;
 703         int status = urb->status;
 704         int error = 0;
 705         int len = 0;
 706         unsigned char *data = urb->transfer_buffer;
 707         priv->poll++;
 708
 709         dbg("%s - enter", __func__);
 710
 711         if (status) {
 712                 dbg("%s - status = %d", __func__, status);
 713                 /* error stop all */
 714                 return;
 715         }
 716         if (data == NULL)
 717                 dbg("%s - data is NULL !!!", __func__);
 718
 719         if (urb->actual_length == 1  && data != NULL)
 720                 len = (int) data[0];
 721
 722         if (urb->actual_length > 1) {
 723                 dbg("%s - urb->actual_length = %i", __func__,
 724                     urb->actual_length);
 725                 error = 1;
 726                 return;
 727         }
 728         /* if len > 0 call readbuf */
 729
 730         if (len > 0 && error == 0) {
 731                 dbg("%s - call read buf - len to read is %i ",
 732                         __func__, len);
 733                 status = iuu_read_buf(port, len);
 734                 return;
 735         }
 736         /* need to update status  ? */
 737         if (priv->poll > 99) {
 738                 status = iuu_status(port);
 739                 priv->poll = 0;
 740                 return;
 741         }
 742
 743         /* reset waiting ? */
 744
 745         if (priv->reset == 1) {
 746                 status = iuu_reset(port, 0xC);
 747                 return;
 748         }
 749         /* Writebuf is waiting */
 750         spin_lock_irqsave(&priv->lock, flags);
 751         if (priv->writelen > 0) {
 752                 spin_unlock_irqrestore(&priv->lock, flags);
 753                 status = iuu_bulk_write(port);
 754                 return;
 755         }
 756         spin_unlock_irqrestore(&priv->lock, flags);
 757         /* if nothing to write call again rxcmd */
 758         dbg("%s - rxcmd recall", __func__);
 759         iuu_led_activity_off(urb);
 760 }
 761
 762 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
 763                           const u8 *buf, int count)
 764 {
 765         struct iuu_private *priv = usb_get_serial_port_data(port);
 766         unsigned long flags;
 767         dbg("%s - enter", __func__);
 768
 769         if (count > 256)
 770                 return -ENOMEM;
 771
 772         spin_lock_irqsave(&priv->lock, flags);
 773         if (priv->writelen > 0) {
 774                 /* buffer already filled but not commited */
 775                 spin_unlock_irqrestore(&priv->lock, flags);
 776                 return 0;
 777         }
 778         /* fill the buffer */
 779         memcpy(priv->writebuf, buf, count);
 780         priv->writelen = count;
 781         spin_unlock_irqrestore(&priv->lock, flags);
 782
 783         return count;
 784 }
 785
 786 static void read_rxcmd_callback(struct urb *urb)
 787 {
 788         struct usb_serial_port *port = urb->context;
 789         int result;
 790         int status = urb->status;
 791
 792         dbg("%s - status = %d", __func__, status);
 793
 794         if (status) {
 795                 /* error stop all */
 796                 return;
 797         }
 798
 799         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 800                           usb_rcvbulkpipe(port->serial->dev,
 801                                           port->bulk_in_endpointAddress),
 802                           port->read_urb->transfer_buffer, 256,
 803                           iuu_uart_read_callback, port);
 804         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 805         dbg("%s - submit result = %d", __func__, result);
 806         return;
 807 }
 808
 809 static int iuu_uart_on(struct usb_serial_port *port)
 810 {
 811         int status;
 812         u8 *buf;
 813
 814         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
 815
 816         if (!buf)
 817                 return -ENOMEM;
 818
 819         buf[0] = IUU_UART_ENABLE;
 820         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
 821         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
 822         buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
 823
 824         status = bulk_immediate(port, buf, 4);
 825         if (status != IUU_OPERATION_OK) {
 826                 dbg("%s - uart_on error", __func__);
 827                 goto uart_enable_failed;
 828         }
 829         /*  iuu_reset() the card after iuu_uart_on() */
 830         status = iuu_uart_flush(port);
 831         if (status != IUU_OPERATION_OK)
 832                 dbg("%s - uart_flush error", __func__);
 833 uart_enable_failed:
 834         kfree(buf);
 835         return status;
 836 }
 837
 838 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
 839 static int iuu_uart_off(struct usb_serial_port *port)
 840 {
 841         int status;
 842         u8 *buf;
 843         buf = kmalloc(1, GFP_KERNEL);
 844         if (!buf)
 845                 return -ENOMEM;
 846         buf[0] = IUU_UART_DISABLE;
 847
 848         status = bulk_immediate(port, buf, 1);
 849         if (status != IUU_OPERATION_OK)
 850                 dbg("%s - uart_off error", __func__);
 851
 852         kfree(buf);
 853         return status;
 854 }
 855
 856 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
 857                          u32 *actual, u8 parity)
 858 {
 859         int status;
 860         u8 *dataout;
 861         u8 DataCount = 0;
 862         u8 T1Frekvens = 0;
 863         u8 T1reload = 0;
 864         unsigned int T1FrekvensHZ = 0;
 865
 866         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
 867
 868         if (!dataout)
 869                 return -ENOMEM;
 870
 871         if (baud < 1200 || baud > 230400) {
 872                 kfree(dataout);
 873                 return IUU_INVALID_PARAMETER;
 874         }
 875         if (baud > 977) {
 876                 T1Frekvens = 3;
 877                 T1FrekvensHZ = 500000;
 878         }
 879
 880         if (baud > 3906) {
 881                 T1Frekvens = 2;
 882                 T1FrekvensHZ = 2000000;
 883         }
 884
 885         if (baud > 11718) {
 886                 T1Frekvens = 1;
 887                 T1FrekvensHZ = 6000000;
 888         }
 889
 890         if (baud > 46875) {
 891                 T1Frekvens = 0;
 892                 T1FrekvensHZ = 24000000;
 893         }
 894
 895         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 896
 897         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
 898         dataout[DataCount++] = IUU_UART_ESC;
 899         /*  magic number here:  CHANGE_BAUD; */
 900         dataout[DataCount++] = IUU_UART_CHANGE;
 901         dataout[DataCount++] = T1Frekvens;
 902         dataout[DataCount++] = T1reload;
 903
 904         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 905
 906         switch (parity & 0x0F) {
 907         case IUU_PARITY_NONE:
 908                 dataout[DataCount++] = 0x00;
 909                 break;
 910         case IUU_PARITY_EVEN:
 911                 dataout[DataCount++] = 0x01;
 912                 break;
 913         case IUU_PARITY_ODD:
 914                 dataout[DataCount++] = 0x02;
 915                 break;
 916         case IUU_PARITY_MARK:
 917                 dataout[DataCount++] = 0x03;
 918                 break;
 919         case IUU_PARITY_SPACE:
 920                 dataout[DataCount++] = 0x04;
 921                 break;
 922         default:
 923                 kfree(dataout);
 924                 return IUU_INVALID_PARAMETER;
 925                 break;
 926         }
 927
 928         switch (parity & 0xF0) {
 929         case IUU_ONE_STOP_BIT:
 930                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
 931                 break;
 932
 933         case IUU_TWO_STOP_BITS:
 934                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
 935                 break;
 936         default:
 937                 kfree(dataout);
 938                 return IUU_INVALID_PARAMETER;
 939                 break;
 940         }
 941
 942         status = bulk_immediate(port, dataout, DataCount);
 943         if (status != IUU_OPERATION_OK)
 944                 dbg("%s - uart_off error", __func__);
 945         kfree(dataout);
 946         return status;
 947 }
 948
 949 static int set_control_lines(struct usb_device *dev, u8 value)
 950 {
 951         return 0;
 952 }
 953
 954 static void iuu_close(struct tty_struct *tty,
 955                         struct usb_serial_port *port, struct file *filp)
 956 {
 957         /* iuu_led (port,255,0,0,0); */
 958         struct usb_serial *serial;
 959         struct iuu_private *priv = usb_get_serial_port_data(port);
 960         unsigned long flags;
 961         unsigned int c_cflag;
 962
 963         serial = port->serial;
 964         if (!serial)
 965                 return;
 966
 967         dbg("%s - port %d", __func__, port->number);
 968
 969         iuu_uart_off(port);
 970         if (serial->dev) {
 971                 if (tty) {
 972                         c_cflag = tty->termios->c_cflag;
 973                         if (c_cflag & HUPCL) {
 974                                 /* drop DTR and RTS */
 975                                 priv = usb_get_serial_port_data(port);
 976                                 spin_lock_irqsave(&priv->lock, flags);
 977                                 priv->line_control = 0;
 978                                 spin_unlock_irqrestore(&priv->lock, flags);
 979                                 set_control_lines(port->serial->dev, 0);
 980                         }
 981                 }
 982                 /* free writebuf */
 983                 /* shutdown our urbs */
 984                 dbg("%s - shutting down urbs", __func__);
 985                 usb_kill_urb(port->write_urb);
 986                 usb_kill_urb(port->read_urb);
 987                 usb_kill_urb(port->interrupt_in_urb);
 988                 msleep(1000);
 989                 /* wait one second to free all buffers */
 990                 iuu_led(port, 0, 0, 0xF000, 0xFF);
 991                 msleep(1000);
 992                 usb_reset_device(port->serial->dev);
 993         }
 994 }
 995
 996 static int iuu_open(struct tty_struct *tty,
 997                         struct usb_serial_port *port, struct file *filp)
 998 {
 999         struct usb_serial *serial = port->serial;
1000         u8 *buf;
1001         int result;
1002         u32 actual;
1003         unsigned long flags;
1004         struct iuu_private *priv = usb_get_serial_port_data(port);
1005
1006         dbg("%s -  port %d", __func__, port->number);
1007         usb_clear_halt(serial->dev, port->write_urb->pipe);
1008         usb_clear_halt(serial->dev, port->read_urb->pipe);
1009
1010         buf = kmalloc(10, GFP_KERNEL);
1011         if (buf == NULL)
1012                 return -ENOMEM;
1013
1014         /* fixup the endpoint buffer size */
1015         kfree(port->bulk_out_buffer);
1016         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1017         port->bulk_out_size = 512;
1018         kfree(port->bulk_in_buffer);
1019         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1020         port->bulk_in_size = 512;
1021
1022         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1023                 kfree(port->bulk_out_buffer);
1024                 kfree(port->bulk_in_buffer);
1025                 kfree(buf);
1026                 return -ENOMEM;
1027         }
1028
1029         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1030                           usb_sndbulkpipe(port->serial->dev,
1031                                           port->bulk_out_endpointAddress),
1032                           port->bulk_out_buffer, 512,
1033                           NULL, NULL);
1034
1035
1036         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1037                           usb_rcvbulkpipe(port->serial->dev,
1038                                           port->bulk_in_endpointAddress),
1039                           port->bulk_in_buffer, 512,
1040                           NULL, NULL);
1041
1042         /* set the termios structure */
1043         spin_lock_irqsave(&priv->lock, flags);
1044         if (tty && !priv->termios_initialized) {
1045                 *(tty->termios) = tty_std_termios;
1046                 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1047                                         | TIOCM_CTS | CSTOPB | PARENB;
1048                 tty->termios->c_ispeed = 9600;
1049                 tty->termios->c_ospeed = 9600;
1050                 tty->termios->c_lflag = 0;
1051                 tty->termios->c_oflag = 0;
1052                 tty->termios->c_iflag = 0;
1053                 priv->termios_initialized = 1;
1054                 tty->low_latency = 1;
1055                 priv->poll = 0;
1056          }
1057         spin_unlock_irqrestore(&priv->lock, flags);
1058
1059         /* initialize writebuf */
1060 #define FISH(a, b, c, d) do { \
1061         result = usb_control_msg(port->serial->dev,     \
1062                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1063                                 b, a, c, d, buf, 1, 1000); \
1064         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1065                                 buf[0]); } while (0);
1066
1067 #define SOUP(a, b, c, d)  do { \
1068         result = usb_control_msg(port->serial->dev,     \
1069                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1070                                 b, a, c, d, NULL, 0, 1000); \
1071         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1072
1073         /*  This is not UART related but IUU USB driver related or something */
1074         /*  like that. Basically no IUU will accept any commands from the USB */
1075         /*  host unless it has received the following message */
1076         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1077
1078         SOUP(0x03, 0x02, 0x02, 0x0);
1079         kfree(buf);
1080         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1081         iuu_uart_on(port);
1082         if (boost < 100)
1083                 boost = 100;
1084         switch (clockmode) {
1085         case 2:         /*  3.680 Mhz */
1086                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1087                 result =
1088                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1089                                   IUU_PARITY_EVEN);
1090                 break;
1091         case 3:         /*  6.00 Mhz */
1092                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1093                 result =
1094                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1095                                   IUU_PARITY_EVEN);
1096                 break;
1097         default:                /*  3.579 Mhz */
1098                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1099                 result =
1100                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1101                                   IUU_PARITY_EVEN);
1102         }
1103
1104         /* set the cardin cardout signals */
1105         switch (cdmode) {
1106         case 0:
1107                 iuu_cardin = 0;
1108                 iuu_cardout = 0;
1109                 break;
1110         case 1:
1111                 iuu_cardin = TIOCM_CD;
1112                 iuu_cardout =  0;
1113                 break;
1114         case 2:
1115                 iuu_cardin = 0;
1116                 iuu_cardout = TIOCM_CD;
1117                 break;
1118         case 3:
1119                 iuu_cardin = TIOCM_DSR;
1120                 iuu_cardout = 0;
1121                 break;
1122         case 4:
1123                 iuu_cardin = 0;
1124                 iuu_cardout = TIOCM_DSR;
1125                 break;
1126         case 5:
1127                 iuu_cardin = TIOCM_CTS;
1128                 iuu_cardout = 0;
1129                 break;
1130         case 6:
1131                 iuu_cardin = 0;
1132                 iuu_cardout = TIOCM_CTS;
1133                 break;
1134         case 7:
1135                 iuu_cardin = TIOCM_RNG;
1136                 iuu_cardout = 0;
1137                 break;
1138         case 8:
1139                 iuu_cardin = 0;
1140                 iuu_cardout = TIOCM_RNG;
1141         }
1142
1143         iuu_uart_flush(port);
1144
1145         dbg("%s - initialization done", __func__);
1146
1147         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1148         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1149                           usb_sndbulkpipe(port->serial->dev,
1150                                           port->bulk_out_endpointAddress),
1151                           port->write_urb->transfer_buffer, 1,
1152                           read_rxcmd_callback, port);
1153         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1154
1155         if (result) {
1156                 dev_err(&port->dev, "%s - failed submitting read urb,"
1157                         " error %d\n", __func__, result);
1158                 iuu_close(tty, port, NULL);
1159                 return -EPROTO;
1160         } else {
1161                 dbg("%s - rxcmd OK", __func__);
1162         }
1163         return result;
1164 }
1165
1166 static struct usb_serial_driver iuu_device = {
1167         .driver = {
1168                    .owner = THIS_MODULE,
1169                    .name = "iuu_phoenix",
1170                    },
1171         .id_table = id_table,
1172         .num_ports = 1,
1173         .open = iuu_open,
1174         .close = iuu_close,
1175         .write = iuu_uart_write,
1176         .read_bulk_callback = iuu_uart_read_callback,
1177         .tiocmget = iuu_tiocmget,
1178         .tiocmset = iuu_tiocmset,
1179         .attach = iuu_startup,
1180         .shutdown = iuu_shutdown,
1181 };
1182
1183 static int __init iuu_init(void)
1184 {
1185         int retval;
1186         retval = usb_serial_register(&iuu_device);
1187         if (retval)
1188                 goto failed_usb_serial_register;
1189         retval = usb_register(&iuu_driver);
1190         if (retval)
1191                 goto failed_usb_register;
1192         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1193                DRIVER_DESC "\n");
1194         return 0;
1195 failed_usb_register:
1196         usb_serial_deregister(&iuu_device);
1197 failed_usb_serial_register:
1198         return retval;
1199 }
1200
1201 static void __exit iuu_exit(void)
1202 {
1203         usb_deregister(&iuu_driver);
1204         usb_serial_deregister(&iuu_device);
1205 }
1206
1207 module_init(iuu_init);
1208 module_exit(iuu_exit);
1209
1210 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1211
1212 MODULE_DESCRIPTION(DRIVER_DESC);
1213 MODULE_LICENSE("GPL");
1214
1215 MODULE_VERSION(DRIVER_VERSION);
1216 module_param(debug, bool, S_IRUGO | S_IWUSR);
1217 MODULE_PARM_DESC(debug, "Debug enabled or not");
1218
1219 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1220 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1221
1222 module_param(boost, int, S_IRUGO | S_IWUSR);
1223 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1224
1225 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1226 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1227
1228 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1229 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1230                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");