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