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 "v0.10"
  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_status;
  74         int tiostatus;          /* store IUART SIGNAL for tiocmget call */
  75         u8 reset;               /* if 1 reset is needed */
  76         int poll;               /* number of poll */
  77         u8 *writebuf;           /* buffer for writing to device */
  78         int writelen;           /* num of byte to write to device */
  79         u8 *buf;                /* used for initialize speed */
  80         u8 *dbgbuf;             /* debug buffer */
  81         u8 len;
  82 };
  83
  84
  85 static void iuu_free_buf(struct iuu_private *priv)
  86 {
  87         kfree(priv->buf);
  88         kfree(priv->dbgbuf);
  89         kfree(priv->writebuf);
  90 }
  91
  92 static int iuu_alloc_buf(struct iuu_private *priv)
  93 {
  94         priv->buf = kzalloc(256, GFP_KERNEL);
  95         priv->dbgbuf = kzalloc(256, GFP_KERNEL);
  96         priv->writebuf = kzalloc(256, GFP_KERNEL);
  97         if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
  98                 iuu_free_buf(priv);
  99                 dbg("%s problem allocation buffer", __func__);
 100                 return -ENOMEM;
 101         }
 102         dbg("%s - Privates buffers allocation success", __func__);
 103         return 0;
 104 }
 105
 106 static int iuu_startup(struct usb_serial *serial)
 107 {
 108         struct iuu_private *priv;
 109         priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
 110         dbg("%s- priv allocation success", __func__);
 111         if (!priv)
 112                 return -ENOMEM;
 113         if (iuu_alloc_buf(priv)) {
 114                 kfree(priv);
 115                 return -ENOMEM;
 116         }
 117         spin_lock_init(&priv->lock);
 118         init_waitqueue_head(&priv->delta_msr_wait);
 119         usb_set_serial_port_data(serial->port[0], priv);
 120         return 0;
 121 }
 122
 123 /* Release function */
 124 static void iuu_release(struct usb_serial *serial)
 125 {
 126         struct usb_serial_port *port = serial->port[0];
 127         struct iuu_private *priv = usb_get_serial_port_data(port);
 128         if (!port)
 129                 return;
 130
 131         dbg("%s", __func__);
 132
 133         if (priv) {
 134                 iuu_free_buf(priv);
 135                 dbg("%s - I will free all", __func__);
 136                 usb_set_serial_port_data(port, NULL);
 137
 138                 dbg("%s - priv is not anymore in port structure", __func__);
 139                 kfree(priv);
 140
 141                 dbg("%s priv is now kfree", __func__);
 142         }
 143 }
 144
 145 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
 146                         unsigned int set, unsigned int clear)
 147 {
 148         struct usb_serial_port *port = tty->driver_data;
 149         struct iuu_private *priv = usb_get_serial_port_data(port);
 150         unsigned long flags;
 151
 152         /* FIXME: locking on tiomstatus */
 153         dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
 154             port->number, set, clear);
 155
 156         spin_lock_irqsave(&priv->lock, flags);
 157         if (set & TIOCM_RTS)
 158                 priv->tiostatus = TIOCM_RTS;
 159
 160         if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
 161                 dbg("%s TIOCMSET RESET called !!!", __func__);
 162                 priv->reset = 1;
 163         }
 164         spin_unlock_irqrestore(&priv->lock, flags);
 165         return 0;
 166 }
 167
 168 /* This is used to provide a carrier detect mechanism
 169  * When a card is present, the response is 0x00
 170  * When no card , the reader respond with TIOCM_CD
 171  * This is known as CD autodetect mechanism
 172  */
 173 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
 174 {
 175         struct usb_serial_port *port = tty->driver_data;
 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         int status = urb->status;
 192
 193         dbg("%s - enter", __func__);
 194
 195         if (status) {
 196                 dbg("%s - status = %d", __func__, status);
 197                 /* error stop all */
 198                 return;
 199         }
 200
 201
 202         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
 203         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 204                           usb_sndbulkpipe(port->serial->dev,
 205                                           port->bulk_out_endpointAddress),
 206                           port->write_urb->transfer_buffer, 1,
 207                           read_rxcmd_callback, port);
 208         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 209 }
 210
 211 static int iuu_reset(struct usb_serial_port *port, u8 wt)
 212 {
 213         struct iuu_private *priv = usb_get_serial_port_data(port);
 214         int result;
 215         char *buf_ptr = port->write_urb->transfer_buffer;
 216         dbg("%s - enter", __func__);
 217
 218         /* Prepare the reset sequence */
 219
 220         *buf_ptr++ = IUU_RST_SET;
 221         *buf_ptr++ = IUU_DELAY_MS;
 222         *buf_ptr++ = wt;
 223         *buf_ptr = IUU_RST_CLEAR;
 224
 225         /* send the sequence */
 226
 227         usb_fill_bulk_urb(port->write_urb,
 228                           port->serial->dev,
 229                           usb_sndbulkpipe(port->serial->dev,
 230                                           port->bulk_out_endpointAddress),
 231                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
 232         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 233         priv->reset = 0;
 234         return result;
 235 }
 236
 237 /* Status Function
 238  * Return value is
 239  * 0x00 = no card
 240  * 0x01 = smartcard
 241  * 0x02 = sim card
 242  */
 243 static void iuu_update_status_callback(struct urb *urb)
 244 {
 245         struct usb_serial_port *port = urb->context;
 246         struct iuu_private *priv = usb_get_serial_port_data(port);
 247         u8 *st;
 248         int status = urb->status;
 249
 250         dbg("%s - enter", __func__);
 251
 252         if (status) {
 253                 dbg("%s - status = %d", __func__, status);
 254                 /* error stop all */
 255                 return;
 256         }
 257
 258         st = urb->transfer_buffer;
 259         dbg("%s - enter", __func__);
 260         if (urb->actual_length == 1) {
 261                 switch (st[0]) {
 262                 case 0x1:
 263                         priv->tiostatus = iuu_cardout;
 264                         break;
 265                 case 0x0:
 266                         priv->tiostatus = iuu_cardin;
 267                         break;
 268                 default:
 269                         priv->tiostatus = iuu_cardin;
 270                 }
 271         }
 272         iuu_rxcmd(urb);
 273 }
 274
 275 static void iuu_status_callback(struct urb *urb)
 276 {
 277         struct usb_serial_port *port = urb->context;
 278         int result;
 279         int status = urb->status;
 280
 281         dbg("%s - status = %d", __func__, status);
 282         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 283                           usb_rcvbulkpipe(port->serial->dev,
 284                                           port->bulk_in_endpointAddress),
 285                           port->read_urb->transfer_buffer, 256,
 286                           iuu_update_status_callback, port);
 287         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 288 }
 289
 290 static int iuu_status(struct usb_serial_port *port)
 291 {
 292         int result;
 293
 294         dbg("%s - enter", __func__);
 295
 296         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
 297         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 298                           usb_sndbulkpipe(port->serial->dev,
 299                                           port->bulk_out_endpointAddress),
 300                           port->write_urb->transfer_buffer, 1,
 301                           iuu_status_callback, port);
 302         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 303         return result;
 304
 305 }
 306
 307 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 308 {
 309         int status;
 310         struct usb_serial *serial = port->serial;
 311         int actual = 0;
 312
 313         dbg("%s - enter", __func__);
 314
 315         /* send the data out the bulk port */
 316
 317         status =
 318             usb_bulk_msg(serial->dev,
 319                          usb_sndbulkpipe(serial->dev,
 320                                          port->bulk_out_endpointAddress), buf,
 321                          count, &actual, HZ * 1);
 322
 323         if (status != IUU_OPERATION_OK)
 324                 dbg("%s - error = %2x", __func__, status);
 325         else
 326                 dbg("%s - write OK !", __func__);
 327         return status;
 328 }
 329
 330 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 331 {
 332         int status;
 333         struct usb_serial *serial = port->serial;
 334         int actual = 0;
 335
 336         dbg("%s - enter", __func__);
 337
 338         /* send the data out the bulk port */
 339
 340         status =
 341             usb_bulk_msg(serial->dev,
 342                          usb_rcvbulkpipe(serial->dev,
 343                                          port->bulk_in_endpointAddress), buf,
 344                          count, &actual, HZ * 1);
 345
 346         if (status != IUU_OPERATION_OK)
 347                 dbg("%s - error = %2x", __func__, status);
 348         else
 349                 dbg("%s - read OK !", __func__);
 350         return status;
 351 }
 352
 353 static int iuu_led(struct usb_serial_port *port, unsigned int R,
 354                    unsigned int G, unsigned int B, u8 f)
 355 {
 356         int status;
 357         u8 *buf;
 358         buf = kmalloc(8, GFP_KERNEL);
 359         if (!buf)
 360                 return -ENOMEM;
 361
 362         dbg("%s - enter", __func__);
 363
 364         buf[0] = IUU_SET_LED;
 365         buf[1] = R & 0xFF;
 366         buf[2] = (R >> 8) & 0xFF;
 367         buf[3] = G & 0xFF;
 368         buf[4] = (G >> 8) & 0xFF;
 369         buf[5] = B & 0xFF;
 370         buf[6] = (B >> 8) & 0xFF;
 371         buf[7] = f;
 372         status = bulk_immediate(port, buf, 8);
 373         kfree(buf);
 374         if (status != IUU_OPERATION_OK)
 375                 dbg("%s - led error status = %2x", __func__, status);
 376         else
 377                 dbg("%s - led OK !", __func__);
 378         return IUU_OPERATION_OK;
 379 }
 380
 381 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 382                                  u8 b2, u8 freq)
 383 {
 384         *buf++ = IUU_SET_LED;
 385         *buf++ = r1;
 386         *buf++ = r2;
 387         *buf++ = g1;
 388         *buf++ = g2;
 389         *buf++ = b1;
 390         *buf++ = b2;
 391         *buf = freq;
 392 }
 393
 394 static void iuu_led_activity_on(struct urb *urb)
 395 {
 396         struct usb_serial_port *port = urb->context;
 397         int result;
 398         char *buf_ptr = port->write_urb->transfer_buffer;
 399         *buf_ptr++ = IUU_SET_LED;
 400         if (xmas == 1) {
 401                 get_random_bytes(buf_ptr, 6);
 402                 *(buf_ptr+7) = 1;
 403         } else {
 404                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
 405         }
 406
 407         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 408                           usb_sndbulkpipe(port->serial->dev,
 409                                           port->bulk_out_endpointAddress),
 410                           port->write_urb->transfer_buffer, 8 ,
 411                           iuu_rxcmd, port);
 412         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 413 }
 414
 415 static void iuu_led_activity_off(struct urb *urb)
 416 {
 417         struct usb_serial_port *port = urb->context;
 418         int result;
 419         char *buf_ptr = port->write_urb->transfer_buffer;
 420         if (xmas == 1) {
 421                 iuu_rxcmd(urb);
 422                 return;
 423         } else {
 424                 *buf_ptr++ = IUU_SET_LED;
 425                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 426         }
 427         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 428                           usb_sndbulkpipe(port->serial->dev,
 429                                           port->bulk_out_endpointAddress),
 430                           port->write_urb->transfer_buffer, 8 ,
 431                           iuu_rxcmd, port);
 432         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 433 }
 434
 435
 436
 437 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
 438 {
 439         int status;
 440         struct iuu_private *priv = usb_get_serial_port_data(port);
 441         int Count = 0;
 442         u8 FrqGenAdr = 0x69;
 443         u8 DIV = 0;             /* 8bit */
 444         u8 XDRV = 0;            /* 8bit */
 445         u8 PUMP = 0;            /* 3bit */
 446         u8 PBmsb = 0;           /* 2bit */
 447         u8 PBlsb = 0;           /* 8bit */
 448         u8 PO = 0;              /* 1bit */
 449         u8 Q = 0;               /* 7bit */
 450         /* 24bit = 3bytes */
 451         unsigned int P = 0;
 452         unsigned int P2 = 0;
 453         int frq = (int)dwFrq;
 454
 455         dbg("%s - enter", __func__);
 456
 457         if (frq == 0) {
 458                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
 459                 priv->buf[Count++] = FrqGenAdr << 1;
 460                 priv->buf[Count++] = 0x09;
 461                 priv->buf[Count++] = 0x00;
 462
 463                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
 464                 if (status != 0) {
 465                         dbg("%s - write error ", __func__);
 466                         return status;
 467                 }
 468         } else if (frq == 3579000) {
 469                 DIV = 100;
 470                 P = 1193;
 471                 Q = 40;
 472                 XDRV = 0;
 473         } else if (frq == 3680000) {
 474                 DIV = 105;
 475                 P = 161;
 476                 Q = 5;
 477                 XDRV = 0;
 478         } else if (frq == 6000000) {
 479                 DIV = 66;
 480                 P = 66;
 481                 Q = 2;
 482                 XDRV = 0x28;
 483         } else {
 484                 unsigned int result = 0;
 485                 unsigned int tmp = 0;
 486                 unsigned int check;
 487                 unsigned int check2;
 488                 char found = 0x00;
 489                 unsigned int lQ = 2;
 490                 unsigned int lP = 2055;
 491                 unsigned int lDiv = 4;
 492
 493                 for (lQ = 2; lQ <= 47 && !found; lQ++)
 494                         for (lP = 2055; lP >= 8 && !found; lP--)
 495                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
 496                                         tmp = (12000000 / lDiv) * (lP / lQ);
 497                                         if (abs((int)(tmp - frq)) <
 498                                             abs((int)(frq - result))) {
 499                                                 check2 = (12000000 / lQ);
 500                                                 if (check2 < 250000)
 501                                                         continue;
 502                                                 check = (12000000 / lQ) * lP;
 503                                                 if (check > 400000000)
 504                                                         continue;
 505                                                 if (check < 100000000)
 506                                                         continue;
 507                                                 if (lDiv < 4 || lDiv > 127)
 508                                                         continue;
 509                                                 result = tmp;
 510                                                 P = lP;
 511                                                 DIV = lDiv;
 512                                                 Q = lQ;
 513                                                 if (result == frq)
 514                                                         found = 0x01;
 515                                         }
 516                                 }
 517         }
 518         P2 = ((P - PO) / 2) - 4;
 519         DIV = DIV;
 520         PUMP = 0x04;
 521         PBmsb = (P2 >> 8 & 0x03);
 522         PBlsb = P2 & 0xFF;
 523         PO = (P >> 10) & 0x01;
 524         Q = Q - 2;
 525
 526         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 527         priv->buf[Count++] = FrqGenAdr << 1;
 528         priv->buf[Count++] = 0x09;
 529         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
 530         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 531         priv->buf[Count++] = FrqGenAdr << 1;
 532         priv->buf[Count++] = 0x0C;
 533         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
 534         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 535         priv->buf[Count++] = FrqGenAdr << 1;
 536         priv->buf[Count++] = 0x12;
 537         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
 538         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 539         priv->buf[Count++] = FrqGenAdr << 1;
 540         priv->buf[Count++] = 0x13;
 541         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
 542         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 543         priv->buf[Count++] = FrqGenAdr << 1;
 544         priv->buf[Count++] = 0x40;
 545         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
 546                              (PBmsb & 0x03);    /* Adr = 0x40 */
 547         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 548         priv->buf[Count++] = FrqGenAdr << 1;
 549         priv->buf[Count++] = 0x41;
 550         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
 551         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 552         priv->buf[Count++] = FrqGenAdr << 1;
 553         priv->buf[Count++] = 0x42;
 554         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
 555         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 556         priv->buf[Count++] = FrqGenAdr << 1;
 557         priv->buf[Count++] = 0x44;
 558         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
 559         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 560         priv->buf[Count++] = FrqGenAdr << 1;
 561         priv->buf[Count++] = 0x45;
 562         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
 563         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 564         priv->buf[Count++] = FrqGenAdr << 1;
 565         priv->buf[Count++] = 0x46;
 566         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
 567         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 568         priv->buf[Count++] = FrqGenAdr << 1;
 569         priv->buf[Count++] = 0x47;
 570         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
 571
 572         status = bulk_immediate(port, (u8 *) priv->buf, Count);
 573         if (status != IUU_OPERATION_OK)
 574                 dbg("%s - write error ", __func__);
 575         return status;
 576 }
 577
 578 static int iuu_uart_flush(struct usb_serial_port *port)
 579 {
 580         int i;
 581         int status;
 582         u8 rxcmd = IUU_UART_RX;
 583         struct iuu_private *priv = usb_get_serial_port_data(port);
 584
 585         dbg("%s - enter", __func__);
 586
 587         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 588                 return -EIO;
 589
 590         for (i = 0; i < 2; i++) {
 591                 status = bulk_immediate(port, &rxcmd, 1);
 592                 if (status != IUU_OPERATION_OK) {
 593                         dbg("%s - uart_flush_write error", __func__);
 594                         return status;
 595                 }
 596
 597                 status = read_immediate(port, &priv->len, 1);
 598                 if (status != IUU_OPERATION_OK) {
 599                         dbg("%s - uart_flush_read error", __func__);
 600                         return status;
 601                 }
 602
 603                 if (priv->len > 0) {
 604                         dbg("%s - uart_flush datalen is : %i ", __func__,
 605                             priv->len);
 606                         status = read_immediate(port, priv->buf, priv->len);
 607                         if (status != IUU_OPERATION_OK) {
 608                                 dbg("%s - uart_flush_read error", __func__);
 609                                 return status;
 610                         }
 611                 }
 612         }
 613         dbg("%s - uart_flush_read OK!", __func__);
 614         iuu_led(port, 0, 0xF000, 0, 0xFF);
 615         return status;
 616 }
 617
 618 static void read_buf_callback(struct urb *urb)
 619 {
 620         struct usb_serial_port *port = urb->context;
 621         unsigned char *data = urb->transfer_buffer;
 622         struct tty_struct *tty;
 623         int status = urb->status;
 624
 625         dbg("%s - status = %d", __func__, status);
 626
 627         if (status) {
 628                 if (status == -EPROTO) {
 629                         /* reschedule needed */
 630                 }
 631                 return;
 632         }
 633
 634         dbg("%s - %i chars to write", __func__, urb->actual_length);
 635         tty = tty_port_tty_get(&port->port);
 636         if (data == NULL)
 637                 dbg("%s - data is NULL !!!", __func__);
 638         if (tty && urb->actual_length && data) {
 639                 tty_insert_flip_string(tty, data, urb->actual_length);
 640                 tty_flip_buffer_push(tty);
 641         }
 642         tty_kref_put(tty);
 643         iuu_led_activity_on(urb);
 644 }
 645
 646 static int iuu_bulk_write(struct usb_serial_port *port)
 647 {
 648         struct iuu_private *priv = usb_get_serial_port_data(port);
 649         unsigned long flags;
 650         int result;
 651         int i;
 652         int buf_len;
 653         char *buf_ptr = port->write_urb->transfer_buffer;
 654         dbg("%s - enter", __func__);
 655
 656         spin_lock_irqsave(&priv->lock, flags);
 657         *buf_ptr++ = IUU_UART_ESC;
 658         *buf_ptr++ = IUU_UART_TX;
 659         *buf_ptr++ = priv->writelen;
 660
 661         memcpy(buf_ptr, priv->writebuf, priv->writelen);
 662         buf_len = priv->writelen;
 663         priv->writelen = 0;
 664         spin_unlock_irqrestore(&priv->lock, flags);
 665         if (debug == 1) {
 666                 for (i = 0; i < buf_len; i++)
 667                         sprintf(priv->dbgbuf + i*2 ,
 668                                 "%02X", priv->writebuf[i]);
 669                 priv->dbgbuf[buf_len+i*2] = 0;
 670                 dbg("%s - writing %i chars : %s", __func__,
 671                     buf_len, priv->dbgbuf);
 672         }
 673         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 674                           usb_sndbulkpipe(port->serial->dev,
 675                                           port->bulk_out_endpointAddress),
 676                           port->write_urb->transfer_buffer, buf_len + 3,
 677                           iuu_rxcmd, port);
 678         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 679         usb_serial_port_softint(port);
 680         return result;
 681 }
 682
 683 static int iuu_read_buf(struct usb_serial_port *port, int len)
 684 {
 685         int result;
 686         dbg("%s - enter", __func__);
 687
 688         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 689                           usb_rcvbulkpipe(port->serial->dev,
 690                                           port->bulk_in_endpointAddress),
 691                           port->read_urb->transfer_buffer, len,
 692                           read_buf_callback, port);
 693         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 694         return result;
 695 }
 696
 697 static void iuu_uart_read_callback(struct urb *urb)
 698 {
 699         struct usb_serial_port *port = urb->context;
 700         struct iuu_private *priv = usb_get_serial_port_data(port);
 701         unsigned long flags;
 702         int status = urb->status;
 703         int error = 0;
 704         int len = 0;
 705         unsigned char *data = urb->transfer_buffer;
 706         priv->poll++;
 707
 708         dbg("%s - enter", __func__);
 709
 710         if (status) {
 711                 dbg("%s - status = %d", __func__, status);
 712                 /* error stop all */
 713                 return;
 714         }
 715         if (data == NULL)
 716                 dbg("%s - data is NULL !!!", __func__);
 717
 718         if (urb->actual_length == 1  && data != NULL)
 719                 len = (int) data[0];
 720
 721         if (urb->actual_length > 1) {
 722                 dbg("%s - urb->actual_length = %i", __func__,
 723                     urb->actual_length);
 724                 error = 1;
 725                 return;
 726         }
 727         /* if len > 0 call readbuf */
 728
 729         if (len > 0 && error == 0) {
 730                 dbg("%s - call read buf - len to read is %i ",
 731                         __func__, len);
 732                 status = iuu_read_buf(port, len);
 733                 return;
 734         }
 735         /* need to update status  ? */
 736         if (priv->poll > 99) {
 737                 status = iuu_status(port);
 738                 priv->poll = 0;
 739                 return;
 740         }
 741
 742         /* reset waiting ? */
 743
 744         if (priv->reset == 1) {
 745                 status = iuu_reset(port, 0xC);
 746                 return;
 747         }
 748         /* Writebuf is waiting */
 749         spin_lock_irqsave(&priv->lock, flags);
 750         if (priv->writelen > 0) {
 751                 spin_unlock_irqrestore(&priv->lock, flags);
 752                 status = iuu_bulk_write(port);
 753                 return;
 754         }
 755         spin_unlock_irqrestore(&priv->lock, flags);
 756         /* if nothing to write call again rxcmd */
 757         dbg("%s - rxcmd recall", __func__);
 758         iuu_led_activity_off(urb);
 759 }
 760
 761 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
 762                           const u8 *buf, int count)
 763 {
 764         struct iuu_private *priv = usb_get_serial_port_data(port);
 765         unsigned long flags;
 766         dbg("%s - enter", __func__);
 767
 768         if (count > 256)
 769                 return -ENOMEM;
 770
 771         spin_lock_irqsave(&priv->lock, flags);
 772
 773         /* fill the buffer */
 774         memcpy(priv->writebuf + priv->writelen, buf, count);
 775         priv->writelen += count;
 776         spin_unlock_irqrestore(&priv->lock, flags);
 777
 778         return count;
 779 }
 780
 781 static void read_rxcmd_callback(struct urb *urb)
 782 {
 783         struct usb_serial_port *port = urb->context;
 784         int result;
 785         int status = urb->status;
 786
 787         dbg("%s - status = %d", __func__, status);
 788
 789         if (status) {
 790                 /* error stop all */
 791                 return;
 792         }
 793
 794         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 795                           usb_rcvbulkpipe(port->serial->dev,
 796                                           port->bulk_in_endpointAddress),
 797                           port->read_urb->transfer_buffer, 256,
 798                           iuu_uart_read_callback, port);
 799         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 800         dbg("%s - submit result = %d", __func__, result);
 801         return;
 802 }
 803
 804 static int iuu_uart_on(struct usb_serial_port *port)
 805 {
 806         int status;
 807         u8 *buf;
 808
 809         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
 810
 811         if (!buf)
 812                 return -ENOMEM;
 813
 814         buf[0] = IUU_UART_ENABLE;
 815         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
 816         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
 817         buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
 818
 819         status = bulk_immediate(port, buf, 4);
 820         if (status != IUU_OPERATION_OK) {
 821                 dbg("%s - uart_on error", __func__);
 822                 goto uart_enable_failed;
 823         }
 824         /*  iuu_reset() the card after iuu_uart_on() */
 825         status = iuu_uart_flush(port);
 826         if (status != IUU_OPERATION_OK)
 827                 dbg("%s - uart_flush error", __func__);
 828 uart_enable_failed:
 829         kfree(buf);
 830         return status;
 831 }
 832
 833 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
 834 static int iuu_uart_off(struct usb_serial_port *port)
 835 {
 836         int status;
 837         u8 *buf;
 838         buf = kmalloc(1, GFP_KERNEL);
 839         if (!buf)
 840                 return -ENOMEM;
 841         buf[0] = IUU_UART_DISABLE;
 842
 843         status = bulk_immediate(port, buf, 1);
 844         if (status != IUU_OPERATION_OK)
 845                 dbg("%s - uart_off error", __func__);
 846
 847         kfree(buf);
 848         return status;
 849 }
 850
 851 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
 852                          u32 *actual, u8 parity)
 853 {
 854         int status;
 855         u8 *dataout;
 856         u8 DataCount = 0;
 857         u8 T1Frekvens = 0;
 858         u8 T1reload = 0;
 859         unsigned int T1FrekvensHZ = 0;
 860
 861         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
 862
 863         if (!dataout)
 864                 return -ENOMEM;
 865
 866         if (baud < 1200 || baud > 230400) {
 867                 kfree(dataout);
 868                 return IUU_INVALID_PARAMETER;
 869         }
 870         if (baud > 977) {
 871                 T1Frekvens = 3;
 872                 T1FrekvensHZ = 500000;
 873         }
 874
 875         if (baud > 3906) {
 876                 T1Frekvens = 2;
 877                 T1FrekvensHZ = 2000000;
 878         }
 879
 880         if (baud > 11718) {
 881                 T1Frekvens = 1;
 882                 T1FrekvensHZ = 6000000;
 883         }
 884
 885         if (baud > 46875) {
 886                 T1Frekvens = 0;
 887                 T1FrekvensHZ = 24000000;
 888         }
 889
 890         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 891
 892         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
 893         dataout[DataCount++] = IUU_UART_ESC;
 894         /*  magic number here:  CHANGE_BAUD; */
 895         dataout[DataCount++] = IUU_UART_CHANGE;
 896         dataout[DataCount++] = T1Frekvens;
 897         dataout[DataCount++] = T1reload;
 898
 899         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 900
 901         switch (parity & 0x0F) {
 902         case IUU_PARITY_NONE:
 903                 dataout[DataCount++] = 0x00;
 904                 break;
 905         case IUU_PARITY_EVEN:
 906                 dataout[DataCount++] = 0x01;
 907                 break;
 908         case IUU_PARITY_ODD:
 909                 dataout[DataCount++] = 0x02;
 910                 break;
 911         case IUU_PARITY_MARK:
 912                 dataout[DataCount++] = 0x03;
 913                 break;
 914         case IUU_PARITY_SPACE:
 915                 dataout[DataCount++] = 0x04;
 916                 break;
 917         default:
 918                 kfree(dataout);
 919                 return IUU_INVALID_PARAMETER;
 920                 break;
 921         }
 922
 923         switch (parity & 0xF0) {
 924         case IUU_ONE_STOP_BIT:
 925                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
 926                 break;
 927
 928         case IUU_TWO_STOP_BITS:
 929                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
 930                 break;
 931         default:
 932                 kfree(dataout);
 933                 return IUU_INVALID_PARAMETER;
 934                 break;
 935         }
 936
 937         status = bulk_immediate(port, dataout, DataCount);
 938         if (status != IUU_OPERATION_OK)
 939                 dbg("%s - uart_off error", __func__);
 940         kfree(dataout);
 941         return status;
 942 }
 943
 944 static void iuu_set_termios(struct tty_struct *tty,
 945                 struct usb_serial_port *port, struct ktermios *old_termios)
 946 {
 947         const u32 supported_mask = CMSPAR|PARENB|PARODD;
 948
 949         unsigned int cflag = tty->termios->c_cflag;
 950         int status;
 951         u32 actual;
 952         u32 parity;
 953         int csize = CS7;
 954         int baud = 9600;        /* Fixed for the moment */
 955         u32 newval = cflag & supported_mask;
 956
 957         /* compute the parity parameter */
 958         parity = 0;
 959         if (cflag & CMSPAR) {   /* Using mark space */
 960                 if (cflag & PARODD)
 961                         parity |= IUU_PARITY_SPACE;
 962                 else
 963                         parity |= IUU_PARITY_MARK;
 964         } else if (!(cflag & PARENB)) {
 965                 parity |= IUU_PARITY_NONE;
 966                 csize = CS8;
 967         } else if (cflag & PARODD)
 968                 parity |= IUU_PARITY_ODD;
 969         else
 970                 parity |= IUU_PARITY_EVEN;
 971
 972         parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
 973
 974         /* set it */
 975         status = iuu_uart_baud(port,
 976                         (clockmode == 2) ? 16457 : 9600 * boost / 100,
 977                         &actual, parity);
 978
 979         /* set the termios value to the real one, so the user now what has
 980          * changed. We support few fields so its easies to copy the old hw
 981          * settings back over and then adjust them
 982          */
 983         if (old_termios)
 984                 tty_termios_copy_hw(tty->termios, old_termios);
 985         if (status != 0)        /* Set failed - return old bits */
 986                 return;
 987         /* Re-encode speed, parity and csize */
 988         tty_encode_baud_rate(tty, baud, baud);
 989         tty->termios->c_cflag &= ~(supported_mask|CSIZE);
 990         tty->termios->c_cflag |= newval | csize;
 991 }
 992
 993 static void iuu_close(struct usb_serial_port *port)
 994 {
 995         /* iuu_led (port,255,0,0,0); */
 996         struct usb_serial *serial;
 997
 998         serial = port->serial;
 999         if (!serial)
1000                 return;
1001
1002         dbg("%s - port %d", __func__, port->number);
1003
1004         iuu_uart_off(port);
1005         if (serial->dev) {
1006                 /* free writebuf */
1007                 /* shutdown our urbs */
1008                 dbg("%s - shutting down urbs", __func__);
1009                 usb_kill_urb(port->write_urb);
1010                 usb_kill_urb(port->read_urb);
1011                 usb_kill_urb(port->interrupt_in_urb);
1012                 msleep(1000);
1013                 /* wait one second to free all buffers */
1014                 iuu_led(port, 0, 0, 0xF000, 0xFF);
1015                 msleep(1000);
1016                 usb_reset_device(port->serial->dev);
1017         }
1018 }
1019
1020 static void iuu_init_termios(struct tty_struct *tty)
1021 {
1022         *(tty->termios) = tty_std_termios;
1023         tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1024                                 | TIOCM_CTS | CSTOPB | PARENB;
1025         tty->termios->c_ispeed = 9600;
1026         tty->termios->c_ospeed = 9600;
1027         tty->termios->c_lflag = 0;
1028         tty->termios->c_oflag = 0;
1029         tty->termios->c_iflag = 0;
1030 }
1031
1032 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
1033 {
1034         struct usb_serial *serial = port->serial;
1035         u8 *buf;
1036         int result;
1037         u32 actual;
1038         struct iuu_private *priv = usb_get_serial_port_data(port);
1039
1040         dbg("%s -  port %d", __func__, port->number);
1041         usb_clear_halt(serial->dev, port->write_urb->pipe);
1042         usb_clear_halt(serial->dev, port->read_urb->pipe);
1043
1044         buf = kmalloc(10, GFP_KERNEL);
1045         if (buf == NULL)
1046                 return -ENOMEM;
1047
1048         /* fixup the endpoint buffer size */
1049         kfree(port->bulk_out_buffer);
1050         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1051         port->bulk_out_size = 512;
1052         kfree(port->bulk_in_buffer);
1053         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1054         port->bulk_in_size = 512;
1055
1056         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1057                 kfree(port->bulk_out_buffer);
1058                 kfree(port->bulk_in_buffer);
1059                 kfree(buf);
1060                 return -ENOMEM;
1061         }
1062
1063         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1064                           usb_sndbulkpipe(port->serial->dev,
1065                                           port->bulk_out_endpointAddress),
1066                           port->bulk_out_buffer, 512,
1067                           NULL, NULL);
1068
1069
1070         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1071                           usb_rcvbulkpipe(port->serial->dev,
1072                                           port->bulk_in_endpointAddress),
1073                           port->bulk_in_buffer, 512,
1074                           NULL, NULL);
1075
1076         priv->poll = 0;
1077
1078         /* initialize writebuf */
1079 #define FISH(a, b, c, d) do { \
1080         result = usb_control_msg(port->serial->dev,     \
1081                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1082                                 b, a, c, d, buf, 1, 1000); \
1083         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1084                                 buf[0]); } while (0);
1085
1086 #define SOUP(a, b, c, d)  do { \
1087         result = usb_control_msg(port->serial->dev,     \
1088                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1089                                 b, a, c, d, NULL, 0, 1000); \
1090         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1091
1092         /*  This is not UART related but IUU USB driver related or something */
1093         /*  like that. Basically no IUU will accept any commands from the USB */
1094         /*  host unless it has received the following message */
1095         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1096
1097         SOUP(0x03, 0x02, 0x02, 0x0);
1098         kfree(buf);
1099         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1100         iuu_uart_on(port);
1101         if (boost < 100)
1102                 boost = 100;
1103         switch (clockmode) {
1104         case 2:         /*  3.680 Mhz */
1105                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1106                 result =
1107                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1108                                   IUU_PARITY_EVEN);
1109                 break;
1110         case 3:         /*  6.00 Mhz */
1111                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1112                 result =
1113                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1114                                   IUU_PARITY_EVEN);
1115                 break;
1116         default:                /*  3.579 Mhz */
1117                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1118                 result =
1119                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1120                                   IUU_PARITY_EVEN);
1121         }
1122
1123         /* set the cardin cardout signals */
1124         switch (cdmode) {
1125         case 0:
1126                 iuu_cardin = 0;
1127                 iuu_cardout = 0;
1128                 break;
1129         case 1:
1130                 iuu_cardin = TIOCM_CD;
1131                 iuu_cardout =  0;
1132                 break;
1133         case 2:
1134                 iuu_cardin = 0;
1135                 iuu_cardout = TIOCM_CD;
1136                 break;
1137         case 3:
1138                 iuu_cardin = TIOCM_DSR;
1139                 iuu_cardout = 0;
1140                 break;
1141         case 4:
1142                 iuu_cardin = 0;
1143                 iuu_cardout = TIOCM_DSR;
1144                 break;
1145         case 5:
1146                 iuu_cardin = TIOCM_CTS;
1147                 iuu_cardout = 0;
1148                 break;
1149         case 6:
1150                 iuu_cardin = 0;
1151                 iuu_cardout = TIOCM_CTS;
1152                 break;
1153         case 7:
1154                 iuu_cardin = TIOCM_RNG;
1155                 iuu_cardout = 0;
1156                 break;
1157         case 8:
1158                 iuu_cardin = 0;
1159                 iuu_cardout = TIOCM_RNG;
1160         }
1161
1162         iuu_uart_flush(port);
1163
1164         dbg("%s - initialization done", __func__);
1165
1166         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1167         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1168                           usb_sndbulkpipe(port->serial->dev,
1169                                           port->bulk_out_endpointAddress),
1170                           port->write_urb->transfer_buffer, 1,
1171                           read_rxcmd_callback, port);
1172         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1173
1174         if (result) {
1175                 dev_err(&port->dev, "%s - failed submitting read urb,"
1176                         " error %d\n", __func__, result);
1177                 iuu_close(port);
1178                 return -EPROTO;
1179         } else {
1180                 dbg("%s - rxcmd OK", __func__);
1181         }
1182         return result;
1183 }
1184
1185 static struct usb_serial_driver iuu_device = {
1186         .driver = {
1187                    .owner = THIS_MODULE,
1188                    .name = "iuu_phoenix",
1189                    },
1190         .id_table = id_table,
1191         .num_ports = 1,
1192         .open = iuu_open,
1193         .close = iuu_close,
1194         .write = iuu_uart_write,
1195         .read_bulk_callback = iuu_uart_read_callback,
1196         .tiocmget = iuu_tiocmget,
1197         .tiocmset = iuu_tiocmset,
1198         .set_termios = iuu_set_termios,
1199         .init_termios = iuu_init_termios,
1200         .attach = iuu_startup,
1201         .release = iuu_release,
1202 };
1203
1204 static int __init iuu_init(void)
1205 {
1206         int retval;
1207         retval = usb_serial_register(&iuu_device);
1208         if (retval)
1209                 goto failed_usb_serial_register;
1210         retval = usb_register(&iuu_driver);
1211         if (retval)
1212                 goto failed_usb_register;
1213         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1214                DRIVER_DESC "\n");
1215         return 0;
1216 failed_usb_register:
1217         usb_serial_deregister(&iuu_device);
1218 failed_usb_serial_register:
1219         return retval;
1220 }
1221
1222 static void __exit iuu_exit(void)
1223 {
1224         usb_deregister(&iuu_driver);
1225         usb_serial_deregister(&iuu_device);
1226 }
1227
1228 module_init(iuu_init);
1229 module_exit(iuu_exit);
1230
1231 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1232
1233 MODULE_DESCRIPTION(DRIVER_DESC);
1234 MODULE_LICENSE("GPL");
1235
1236 MODULE_VERSION(DRIVER_VERSION);
1237 module_param(debug, bool, S_IRUGO | S_IWUSR);
1238 MODULE_PARM_DESC(debug, "Debug enabled or not");
1239
1240 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1241 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1242
1243 module_param(boost, int, S_IRUGO | S_IWUSR);
1244 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1245
1246 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1247 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1248
1249 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1250 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1251                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");