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         u8 termios_initialized;
  75         int tiostatus;          /* store IUART SIGNAL for tiocmget call */
  76         u8 reset;               /* if 1 reset is needed */
  77         int poll;               /* number of poll */
  78         u8 *writebuf;           /* buffer for writing to device */
  79         int writelen;           /* num of byte to write to device */
  80         u8 *buf;                /* used for initialize speed */
  81         u8 *dbgbuf;             /* debug buffer */
  82         u8 len;
  83 };
  84
  85
  86 static void iuu_free_buf(struct iuu_private *priv)
  87 {
  88         kfree(priv->buf);
  89         kfree(priv->dbgbuf);
  90         kfree(priv->writebuf);
  91 }
  92
  93 static int iuu_alloc_buf(struct iuu_private *priv)
  94 {
  95         priv->buf = kzalloc(256, GFP_KERNEL);
  96         priv->dbgbuf = kzalloc(256, GFP_KERNEL);
  97         priv->writebuf = kzalloc(256, GFP_KERNEL);
  98         if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
  99                 iuu_free_buf(priv);
 100                 dbg("%s problem allocation buffer", __func__);
 101                 return -ENOMEM;
 102         }
 103         dbg("%s - Privates buffers allocation success", __func__);
 104         return 0;
 105 }
 106
 107 static int iuu_startup(struct usb_serial *serial)
 108 {
 109         struct iuu_private *priv;
 110         priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
 111         dbg("%s- priv allocation success", __func__);
 112         if (!priv)
 113                 return -ENOMEM;
 114         if (iuu_alloc_buf(priv)) {
 115                 kfree(priv);
 116                 return -ENOMEM;
 117         }
 118         spin_lock_init(&priv->lock);
 119         init_waitqueue_head(&priv->delta_msr_wait);
 120         usb_set_serial_port_data(serial->port[0], priv);
 121         return 0;
 122 }
 123
 124 /* Release function */
 125 static void iuu_release(struct usb_serial *serial)
 126 {
 127         struct usb_serial_port *port = serial->port[0];
 128         struct iuu_private *priv = usb_get_serial_port_data(port);
 129         if (!port)
 130                 return;
 131
 132         dbg("%s", __func__);
 133
 134         if (priv) {
 135                 iuu_free_buf(priv);
 136                 dbg("%s - I will free all", __func__);
 137                 usb_set_serial_port_data(port, NULL);
 138
 139                 dbg("%s - priv is not anymore in port structure", __func__);
 140                 kfree(priv);
 141
 142                 dbg("%s priv is now kfree", __func__);
 143         }
 144 }
 145
 146 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
 147                         unsigned int set, unsigned int clear)
 148 {
 149         struct usb_serial_port *port = tty->driver_data;
 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 tty_struct *tty, struct file *file)
 175 {
 176         struct usb_serial_port *port = tty->driver_data;
 177         struct iuu_private *priv = usb_get_serial_port_data(port);
 178         unsigned long flags;
 179         int rc;
 180
 181         spin_lock_irqsave(&priv->lock, flags);
 182         rc = priv->tiostatus;
 183         spin_unlock_irqrestore(&priv->lock, flags);
 184
 185         return rc;
 186 }
 187
 188 static void iuu_rxcmd(struct urb *urb)
 189 {
 190         struct usb_serial_port *port = urb->context;
 191         int result;
 192         int status = urb->status;
 193
 194         dbg("%s - enter", __func__);
 195
 196         if (status) {
 197                 dbg("%s - status = %d", __func__, status);
 198                 /* error stop all */
 199                 return;
 200         }
 201
 202
 203         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
 204         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 205                           usb_sndbulkpipe(port->serial->dev,
 206                                           port->bulk_out_endpointAddress),
 207                           port->write_urb->transfer_buffer, 1,
 208                           read_rxcmd_callback, port);
 209         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 210 }
 211
 212 static int iuu_reset(struct usb_serial_port *port, u8 wt)
 213 {
 214         struct iuu_private *priv = usb_get_serial_port_data(port);
 215         int result;
 216         char *buf_ptr = port->write_urb->transfer_buffer;
 217         dbg("%s - enter", __func__);
 218
 219         /* Prepare the reset sequence */
 220
 221         *buf_ptr++ = IUU_RST_SET;
 222         *buf_ptr++ = IUU_DELAY_MS;
 223         *buf_ptr++ = wt;
 224         *buf_ptr = IUU_RST_CLEAR;
 225
 226         /* send the sequence */
 227
 228         usb_fill_bulk_urb(port->write_urb,
 229                           port->serial->dev,
 230                           usb_sndbulkpipe(port->serial->dev,
 231                                           port->bulk_out_endpointAddress),
 232                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
 233         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 234         priv->reset = 0;
 235         return result;
 236 }
 237
 238 /* Status Function
 239  * Return value is
 240  * 0x00 = no card
 241  * 0x01 = smartcard
 242  * 0x02 = sim card
 243  */
 244 static void iuu_update_status_callback(struct urb *urb)
 245 {
 246         struct usb_serial_port *port = urb->context;
 247         struct iuu_private *priv = usb_get_serial_port_data(port);
 248         u8 *st;
 249         int status = urb->status;
 250
 251         dbg("%s - enter", __func__);
 252
 253         if (status) {
 254                 dbg("%s - status = %d", __func__, status);
 255                 /* error stop all */
 256                 return;
 257         }
 258
 259         st = urb->transfer_buffer;
 260         dbg("%s - enter", __func__);
 261         if (urb->actual_length == 1) {
 262                 switch (st[0]) {
 263                 case 0x1:
 264                         priv->tiostatus = iuu_cardout;
 265                         break;
 266                 case 0x0:
 267                         priv->tiostatus = iuu_cardin;
 268                         break;
 269                 default:
 270                         priv->tiostatus = iuu_cardin;
 271                 }
 272         }
 273         iuu_rxcmd(urb);
 274 }
 275
 276 static void iuu_status_callback(struct urb *urb)
 277 {
 278         struct usb_serial_port *port = urb->context;
 279         int result;
 280         int status = urb->status;
 281
 282         dbg("%s - status = %d", __func__, status);
 283         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 284                           usb_rcvbulkpipe(port->serial->dev,
 285                                           port->bulk_in_endpointAddress),
 286                           port->read_urb->transfer_buffer, 256,
 287                           iuu_update_status_callback, port);
 288         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 289 }
 290
 291 static int iuu_status(struct usb_serial_port *port)
 292 {
 293         int result;
 294
 295         dbg("%s - enter", __func__);
 296
 297         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
 298         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 299                           usb_sndbulkpipe(port->serial->dev,
 300                                           port->bulk_out_endpointAddress),
 301                           port->write_urb->transfer_buffer, 1,
 302                           iuu_status_callback, port);
 303         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 304         return result;
 305
 306 }
 307
 308 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 309 {
 310         int status;
 311         struct usb_serial *serial = port->serial;
 312         int actual = 0;
 313
 314         dbg("%s - enter", __func__);
 315
 316         /* send the data out the bulk port */
 317
 318         status =
 319             usb_bulk_msg(serial->dev,
 320                          usb_sndbulkpipe(serial->dev,
 321                                          port->bulk_out_endpointAddress), buf,
 322                          count, &actual, HZ * 1);
 323
 324         if (status != IUU_OPERATION_OK)
 325                 dbg("%s - error = %2x", __func__, status);
 326         else
 327                 dbg("%s - write OK !", __func__);
 328         return status;
 329 }
 330
 331 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 332 {
 333         int status;
 334         struct usb_serial *serial = port->serial;
 335         int actual = 0;
 336
 337         dbg("%s - enter", __func__);
 338
 339         /* send the data out the bulk port */
 340
 341         status =
 342             usb_bulk_msg(serial->dev,
 343                          usb_rcvbulkpipe(serial->dev,
 344                                          port->bulk_in_endpointAddress), buf,
 345                          count, &actual, HZ * 1);
 346
 347         if (status != IUU_OPERATION_OK)
 348                 dbg("%s - error = %2x", __func__, status);
 349         else
 350                 dbg("%s - read OK !", __func__);
 351         return status;
 352 }
 353
 354 static int iuu_led(struct usb_serial_port *port, unsigned int R,
 355                    unsigned int G, unsigned int B, u8 f)
 356 {
 357         int status;
 358         u8 *buf;
 359         buf = kmalloc(8, GFP_KERNEL);
 360         if (!buf)
 361                 return -ENOMEM;
 362
 363         dbg("%s - enter", __func__);
 364
 365         buf[0] = IUU_SET_LED;
 366         buf[1] = R & 0xFF;
 367         buf[2] = (R >> 8) & 0xFF;
 368         buf[3] = G & 0xFF;
 369         buf[4] = (G >> 8) & 0xFF;
 370         buf[5] = B & 0xFF;
 371         buf[6] = (B >> 8) & 0xFF;
 372         buf[7] = f;
 373         status = bulk_immediate(port, buf, 8);
 374         kfree(buf);
 375         if (status != IUU_OPERATION_OK)
 376                 dbg("%s - led error status = %2x", __func__, status);
 377         else
 378                 dbg("%s - led OK !", __func__);
 379         return IUU_OPERATION_OK;
 380 }
 381
 382 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 383                                  u8 b2, u8 freq)
 384 {
 385         *buf++ = IUU_SET_LED;
 386         *buf++ = r1;
 387         *buf++ = r2;
 388         *buf++ = g1;
 389         *buf++ = g2;
 390         *buf++ = b1;
 391         *buf++ = b2;
 392         *buf = freq;
 393 }
 394
 395 static void iuu_led_activity_on(struct urb *urb)
 396 {
 397         struct usb_serial_port *port = urb->context;
 398         int result;
 399         char *buf_ptr = port->write_urb->transfer_buffer;
 400         *buf_ptr++ = IUU_SET_LED;
 401         if (xmas == 1) {
 402                 get_random_bytes(buf_ptr, 6);
 403                 *(buf_ptr+7) = 1;
 404         } else {
 405                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
 406         }
 407
 408         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 409                           usb_sndbulkpipe(port->serial->dev,
 410                                           port->bulk_out_endpointAddress),
 411                           port->write_urb->transfer_buffer, 8 ,
 412                           iuu_rxcmd, port);
 413         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 414 }
 415
 416 static void iuu_led_activity_off(struct urb *urb)
 417 {
 418         struct usb_serial_port *port = urb->context;
 419         int result;
 420         char *buf_ptr = port->write_urb->transfer_buffer;
 421         if (xmas == 1) {
 422                 iuu_rxcmd(urb);
 423                 return;
 424         } else {
 425                 *buf_ptr++ = IUU_SET_LED;
 426                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 427         }
 428         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 429                           usb_sndbulkpipe(port->serial->dev,
 430                                           port->bulk_out_endpointAddress),
 431                           port->write_urb->transfer_buffer, 8 ,
 432                           iuu_rxcmd, port);
 433         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 434 }
 435
 436
 437
 438 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
 439 {
 440         int status;
 441         struct iuu_private *priv = usb_get_serial_port_data(port);
 442         int Count = 0;
 443         u8 FrqGenAdr = 0x69;
 444         u8 DIV = 0;             /* 8bit */
 445         u8 XDRV = 0;            /* 8bit */
 446         u8 PUMP = 0;            /* 3bit */
 447         u8 PBmsb = 0;           /* 2bit */
 448         u8 PBlsb = 0;           /* 8bit */
 449         u8 PO = 0;              /* 1bit */
 450         u8 Q = 0;               /* 7bit */
 451         /* 24bit = 3bytes */
 452         unsigned int P = 0;
 453         unsigned int P2 = 0;
 454         int frq = (int)dwFrq;
 455
 456         dbg("%s - enter", __func__);
 457
 458         if (frq == 0) {
 459                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
 460                 priv->buf[Count++] = FrqGenAdr << 1;
 461                 priv->buf[Count++] = 0x09;
 462                 priv->buf[Count++] = 0x00;
 463
 464                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
 465                 if (status != 0) {
 466                         dbg("%s - write error ", __func__);
 467                         return status;
 468                 }
 469         } else if (frq == 3579000) {
 470                 DIV = 100;
 471                 P = 1193;
 472                 Q = 40;
 473                 XDRV = 0;
 474         } else if (frq == 3680000) {
 475                 DIV = 105;
 476                 P = 161;
 477                 Q = 5;
 478                 XDRV = 0;
 479         } else if (frq == 6000000) {
 480                 DIV = 66;
 481                 P = 66;
 482                 Q = 2;
 483                 XDRV = 0x28;
 484         } else {
 485                 unsigned int result = 0;
 486                 unsigned int tmp = 0;
 487                 unsigned int check;
 488                 unsigned int check2;
 489                 char found = 0x00;
 490                 unsigned int lQ = 2;
 491                 unsigned int lP = 2055;
 492                 unsigned int lDiv = 4;
 493
 494                 for (lQ = 2; lQ <= 47 && !found; lQ++)
 495                         for (lP = 2055; lP >= 8 && !found; lP--)
 496                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
 497                                         tmp = (12000000 / lDiv) * (lP / lQ);
 498                                         if (abs((int)(tmp - frq)) <
 499                                             abs((int)(frq - result))) {
 500                                                 check2 = (12000000 / lQ);
 501                                                 if (check2 < 250000)
 502                                                         continue;
 503                                                 check = (12000000 / lQ) * lP;
 504                                                 if (check > 400000000)
 505                                                         continue;
 506                                                 if (check < 100000000)
 507                                                         continue;
 508                                                 if (lDiv < 4 || lDiv > 127)
 509                                                         continue;
 510                                                 result = tmp;
 511                                                 P = lP;
 512                                                 DIV = lDiv;
 513                                                 Q = lQ;
 514                                                 if (result == frq)
 515                                                         found = 0x01;
 516                                         }
 517                                 }
 518         }
 519         P2 = ((P - PO) / 2) - 4;
 520         DIV = DIV;
 521         PUMP = 0x04;
 522         PBmsb = (P2 >> 8 & 0x03);
 523         PBlsb = P2 & 0xFF;
 524         PO = (P >> 10) & 0x01;
 525         Q = Q - 2;
 526
 527         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 528         priv->buf[Count++] = FrqGenAdr << 1;
 529         priv->buf[Count++] = 0x09;
 530         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
 531         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 532         priv->buf[Count++] = FrqGenAdr << 1;
 533         priv->buf[Count++] = 0x0C;
 534         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
 535         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 536         priv->buf[Count++] = FrqGenAdr << 1;
 537         priv->buf[Count++] = 0x12;
 538         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
 539         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 540         priv->buf[Count++] = FrqGenAdr << 1;
 541         priv->buf[Count++] = 0x13;
 542         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
 543         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 544         priv->buf[Count++] = FrqGenAdr << 1;
 545         priv->buf[Count++] = 0x40;
 546         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
 547                              (PBmsb & 0x03);    /* Adr = 0x40 */
 548         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 549         priv->buf[Count++] = FrqGenAdr << 1;
 550         priv->buf[Count++] = 0x41;
 551         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
 552         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 553         priv->buf[Count++] = FrqGenAdr << 1;
 554         priv->buf[Count++] = 0x42;
 555         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
 556         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 557         priv->buf[Count++] = FrqGenAdr << 1;
 558         priv->buf[Count++] = 0x44;
 559         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
 560         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 561         priv->buf[Count++] = FrqGenAdr << 1;
 562         priv->buf[Count++] = 0x45;
 563         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
 564         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 565         priv->buf[Count++] = FrqGenAdr << 1;
 566         priv->buf[Count++] = 0x46;
 567         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
 568         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 569         priv->buf[Count++] = FrqGenAdr << 1;
 570         priv->buf[Count++] = 0x47;
 571         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
 572
 573         status = bulk_immediate(port, (u8 *) priv->buf, Count);
 574         if (status != IUU_OPERATION_OK)
 575                 dbg("%s - write error ", __func__);
 576         return status;
 577 }
 578
 579 static int iuu_uart_flush(struct usb_serial_port *port)
 580 {
 581         int i;
 582         int status;
 583         u8 rxcmd = IUU_UART_RX;
 584         struct iuu_private *priv = usb_get_serial_port_data(port);
 585
 586         dbg("%s - enter", __func__);
 587
 588         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 589                 return -EIO;
 590
 591         for (i = 0; i < 2; i++) {
 592                 status = bulk_immediate(port, &rxcmd, 1);
 593                 if (status != IUU_OPERATION_OK) {
 594                         dbg("%s - uart_flush_write error", __func__);
 595                         return status;
 596                 }
 597
 598                 status = read_immediate(port, &priv->len, 1);
 599                 if (status != IUU_OPERATION_OK) {
 600                         dbg("%s - uart_flush_read error", __func__);
 601                         return status;
 602                 }
 603
 604                 if (priv->len > 0) {
 605                         dbg("%s - uart_flush datalen is : %i ", __func__,
 606                             priv->len);
 607                         status = read_immediate(port, priv->buf, priv->len);
 608                         if (status != IUU_OPERATION_OK) {
 609                                 dbg("%s - uart_flush_read error", __func__);
 610                                 return status;
 611                         }
 612                 }
 613         }
 614         dbg("%s - uart_flush_read OK!", __func__);
 615         iuu_led(port, 0, 0xF000, 0, 0xFF);
 616         return status;
 617 }
 618
 619 static void read_buf_callback(struct urb *urb)
 620 {
 621         struct usb_serial_port *port = urb->context;
 622         unsigned char *data = urb->transfer_buffer;
 623         struct tty_struct *tty;
 624         int status = urb->status;
 625
 626         dbg("%s - status = %d", __func__, status);
 627
 628         if (status) {
 629                 if (status == -EPROTO) {
 630                         /* reschedule needed */
 631                 }
 632                 return;
 633         }
 634
 635         dbg("%s - %i chars to write", __func__, urb->actual_length);
 636         tty = tty_port_tty_get(&port->port);
 637         if (data == NULL)
 638                 dbg("%s - data is NULL !!!", __func__);
 639         if (tty && urb->actual_length && data) {
 640                 tty_insert_flip_string(tty, data, urb->actual_length);
 641                 tty_flip_buffer_push(tty);
 642         }
 643         tty_kref_put(tty);
 644         iuu_led_activity_on(urb);
 645 }
 646
 647 static int iuu_bulk_write(struct usb_serial_port *port)
 648 {
 649         struct iuu_private *priv = usb_get_serial_port_data(port);
 650         unsigned long flags;
 651         int result;
 652         int i;
 653         int buf_len;
 654         char *buf_ptr = port->write_urb->transfer_buffer;
 655         dbg("%s - enter", __func__);
 656
 657         spin_lock_irqsave(&priv->lock, flags);
 658         *buf_ptr++ = IUU_UART_ESC;
 659         *buf_ptr++ = IUU_UART_TX;
 660         *buf_ptr++ = priv->writelen;
 661
 662         memcpy(buf_ptr, priv->writebuf, priv->writelen);
 663         buf_len = priv->writelen;
 664         priv->writelen = 0;
 665         spin_unlock_irqrestore(&priv->lock, flags);
 666         if (debug == 1) {
 667                 for (i = 0; i < buf_len; i++)
 668                         sprintf(priv->dbgbuf + i*2 ,
 669                                 "%02X", priv->writebuf[i]);
 670                 priv->dbgbuf[buf_len+i*2] = 0;
 671                 dbg("%s - writing %i chars : %s", __func__,
 672                     buf_len, priv->dbgbuf);
 673         }
 674         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 675                           usb_sndbulkpipe(port->serial->dev,
 676                                           port->bulk_out_endpointAddress),
 677                           port->write_urb->transfer_buffer, buf_len + 3,
 678                           iuu_rxcmd, port);
 679         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 680         usb_serial_port_softint(port);
 681         return result;
 682 }
 683
 684 static int iuu_read_buf(struct usb_serial_port *port, int len)
 685 {
 686         int result;
 687         dbg("%s - enter", __func__);
 688
 689         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 690                           usb_rcvbulkpipe(port->serial->dev,
 691                                           port->bulk_in_endpointAddress),
 692                           port->read_urb->transfer_buffer, len,
 693                           read_buf_callback, port);
 694         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 695         return result;
 696 }
 697
 698 static void iuu_uart_read_callback(struct urb *urb)
 699 {
 700         struct usb_serial_port *port = urb->context;
 701         struct iuu_private *priv = usb_get_serial_port_data(port);
 702         unsigned long flags;
 703         int status = urb->status;
 704         int error = 0;
 705         int len = 0;
 706         unsigned char *data = urb->transfer_buffer;
 707         priv->poll++;
 708
 709         dbg("%s - enter", __func__);
 710
 711         if (status) {
 712                 dbg("%s - status = %d", __func__, status);
 713                 /* error stop all */
 714                 return;
 715         }
 716         if (data == NULL)
 717                 dbg("%s - data is NULL !!!", __func__);
 718
 719         if (urb->actual_length == 1  && data != NULL)
 720                 len = (int) data[0];
 721
 722         if (urb->actual_length > 1) {
 723                 dbg("%s - urb->actual_length = %i", __func__,
 724                     urb->actual_length);
 725                 error = 1;
 726                 return;
 727         }
 728         /* if len > 0 call readbuf */
 729
 730         if (len > 0 && error == 0) {
 731                 dbg("%s - call read buf - len to read is %i ",
 732                         __func__, len);
 733                 status = iuu_read_buf(port, len);
 734                 return;
 735         }
 736         /* need to update status  ? */
 737         if (priv->poll > 99) {
 738                 status = iuu_status(port);
 739                 priv->poll = 0;
 740                 return;
 741         }
 742
 743         /* reset waiting ? */
 744
 745         if (priv->reset == 1) {
 746                 status = iuu_reset(port, 0xC);
 747                 return;
 748         }
 749         /* Writebuf is waiting */
 750         spin_lock_irqsave(&priv->lock, flags);
 751         if (priv->writelen > 0) {
 752                 spin_unlock_irqrestore(&priv->lock, flags);
 753                 status = iuu_bulk_write(port);
 754                 return;
 755         }
 756         spin_unlock_irqrestore(&priv->lock, flags);
 757         /* if nothing to write call again rxcmd */
 758         dbg("%s - rxcmd recall", __func__);
 759         iuu_led_activity_off(urb);
 760 }
 761
 762 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
 763                           const u8 *buf, int count)
 764 {
 765         struct iuu_private *priv = usb_get_serial_port_data(port);
 766         unsigned long flags;
 767         dbg("%s - enter", __func__);
 768
 769         if (count > 256)
 770                 return -ENOMEM;
 771
 772         spin_lock_irqsave(&priv->lock, flags);
 773
 774         /* fill the buffer */
 775         memcpy(priv->writebuf + priv->writelen, 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         int status = urb->status;
 787
 788         dbg("%s - status = %d", __func__, status);
 789
 790         if (status) {
 791                 /* error stop all */
 792                 return;
 793         }
 794
 795         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 796                           usb_rcvbulkpipe(port->serial->dev,
 797                                           port->bulk_in_endpointAddress),
 798                           port->read_urb->transfer_buffer, 256,
 799                           iuu_uart_read_callback, port);
 800         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 801         dbg("%s - submit result = %d", __func__, result);
 802         return;
 803 }
 804
 805 static int iuu_uart_on(struct usb_serial_port *port)
 806 {
 807         int status;
 808         u8 *buf;
 809
 810         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
 811
 812         if (!buf)
 813                 return -ENOMEM;
 814
 815         buf[0] = IUU_UART_ENABLE;
 816         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
 817         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
 818         buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
 819
 820         status = bulk_immediate(port, buf, 4);
 821         if (status != IUU_OPERATION_OK) {
 822                 dbg("%s - uart_on error", __func__);
 823                 goto uart_enable_failed;
 824         }
 825         /*  iuu_reset() the card after iuu_uart_on() */
 826         status = iuu_uart_flush(port);
 827         if (status != IUU_OPERATION_OK)
 828                 dbg("%s - uart_flush error", __func__);
 829 uart_enable_failed:
 830         kfree(buf);
 831         return status;
 832 }
 833
 834 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
 835 static int iuu_uart_off(struct usb_serial_port *port)
 836 {
 837         int status;
 838         u8 *buf;
 839         buf = kmalloc(1, GFP_KERNEL);
 840         if (!buf)
 841                 return -ENOMEM;
 842         buf[0] = IUU_UART_DISABLE;
 843
 844         status = bulk_immediate(port, buf, 1);
 845         if (status != IUU_OPERATION_OK)
 846                 dbg("%s - uart_off error", __func__);
 847
 848         kfree(buf);
 849         return status;
 850 }
 851
 852 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
 853                          u32 *actual, u8 parity)
 854 {
 855         int status;
 856         u8 *dataout;
 857         u8 DataCount = 0;
 858         u8 T1Frekvens = 0;
 859         u8 T1reload = 0;
 860         unsigned int T1FrekvensHZ = 0;
 861
 862         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
 863
 864         if (!dataout)
 865                 return -ENOMEM;
 866
 867         if (baud < 1200 || baud > 230400) {
 868                 kfree(dataout);
 869                 return IUU_INVALID_PARAMETER;
 870         }
 871         if (baud > 977) {
 872                 T1Frekvens = 3;
 873                 T1FrekvensHZ = 500000;
 874         }
 875
 876         if (baud > 3906) {
 877                 T1Frekvens = 2;
 878                 T1FrekvensHZ = 2000000;
 879         }
 880
 881         if (baud > 11718) {
 882                 T1Frekvens = 1;
 883                 T1FrekvensHZ = 6000000;
 884         }
 885
 886         if (baud > 46875) {
 887                 T1Frekvens = 0;
 888                 T1FrekvensHZ = 24000000;
 889         }
 890
 891         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 892
 893         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
 894         dataout[DataCount++] = IUU_UART_ESC;
 895         /*  magic number here:  CHANGE_BAUD; */
 896         dataout[DataCount++] = IUU_UART_CHANGE;
 897         dataout[DataCount++] = T1Frekvens;
 898         dataout[DataCount++] = T1reload;
 899
 900         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 901
 902         switch (parity & 0x0F) {
 903         case IUU_PARITY_NONE:
 904                 dataout[DataCount++] = 0x00;
 905                 break;
 906         case IUU_PARITY_EVEN:
 907                 dataout[DataCount++] = 0x01;
 908                 break;
 909         case IUU_PARITY_ODD:
 910                 dataout[DataCount++] = 0x02;
 911                 break;
 912         case IUU_PARITY_MARK:
 913                 dataout[DataCount++] = 0x03;
 914                 break;
 915         case IUU_PARITY_SPACE:
 916                 dataout[DataCount++] = 0x04;
 917                 break;
 918         default:
 919                 kfree(dataout);
 920                 return IUU_INVALID_PARAMETER;
 921                 break;
 922         }
 923
 924         switch (parity & 0xF0) {
 925         case IUU_ONE_STOP_BIT:
 926                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
 927                 break;
 928
 929         case IUU_TWO_STOP_BITS:
 930                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
 931                 break;
 932         default:
 933                 kfree(dataout);
 934                 return IUU_INVALID_PARAMETER;
 935                 break;
 936         }
 937
 938         status = bulk_immediate(port, dataout, DataCount);
 939         if (status != IUU_OPERATION_OK)
 940                 dbg("%s - uart_off error", __func__);
 941         kfree(dataout);
 942         return status;
 943 }
 944
 945 static void iuu_set_termios(struct tty_struct *tty,
 946                 struct usb_serial_port *port, struct ktermios *old_termios)
 947 {
 948         const u32 supported_mask = CMSPAR|PARENB|PARODD;
 949
 950         unsigned int cflag = tty->termios->c_cflag;
 951         int status;
 952         u32 actual;
 953         u32 parity;
 954         int csize = CS7;
 955         int baud = 9600;        /* Fixed for the moment */
 956         u32 newval = cflag & supported_mask;
 957
 958         /* compute the parity parameter */
 959         parity = 0;
 960         if (cflag & CMSPAR) {   /* Using mark space */
 961                 if (cflag & PARODD)
 962                         parity |= IUU_PARITY_SPACE;
 963                 else
 964                         parity |= IUU_PARITY_MARK;
 965         } else if (!(cflag & PARENB)) {
 966                 parity |= IUU_PARITY_NONE;
 967                 csize = CS8;
 968         } else if (cflag & PARODD)
 969                 parity |= IUU_PARITY_ODD;
 970         else
 971                 parity |= IUU_PARITY_EVEN;
 972
 973         parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
 974
 975         /* set it */
 976         status = iuu_uart_baud(port,
 977                         (clockmode == 2) ? 16457 : 9600 * boost / 100,
 978                         &actual, parity);
 979
 980         /* set the termios value to the real one, so the user now what has
 981          * changed. We support few fields so its easies to copy the old hw
 982          * settings back over and then adjust them
 983          */
 984         if (old_termios)
 985                 tty_termios_copy_hw(tty->termios, old_termios);
 986         if (status != 0)        /* Set failed - return old bits */
 987                 return;
 988         /* Re-encode speed, parity and csize */
 989         tty_encode_baud_rate(tty, baud, baud);
 990         tty->termios->c_cflag &= ~(supported_mask|CSIZE);
 991         tty->termios->c_cflag |= newval | csize;
 992 }
 993
 994 static void iuu_close(struct usb_serial_port *port)
 995 {
 996         /* iuu_led (port,255,0,0,0); */
 997         struct usb_serial *serial;
 998
 999         serial = port->serial;
1000         if (!serial)
1001                 return;
1002
1003         dbg("%s - port %d", __func__, port->number);
1004
1005         iuu_uart_off(port);
1006         if (serial->dev) {
1007                 /* free writebuf */
1008                 /* shutdown our urbs */
1009                 dbg("%s - shutting down urbs", __func__);
1010                 usb_kill_urb(port->write_urb);
1011                 usb_kill_urb(port->read_urb);
1012                 usb_kill_urb(port->interrupt_in_urb);
1013                 msleep(1000);
1014                 /* wait one second to free all buffers */
1015                 iuu_led(port, 0, 0, 0xF000, 0xFF);
1016                 msleep(1000);
1017                 usb_reset_device(port->serial->dev);
1018         }
1019 }
1020
1021 static int iuu_open(struct tty_struct *tty,
1022                         struct usb_serial_port *port, struct file *filp)
1023 {
1024         struct usb_serial *serial = port->serial;
1025         u8 *buf;
1026         int result;
1027         u32 actual;
1028         unsigned long flags;
1029         struct iuu_private *priv = usb_get_serial_port_data(port);
1030
1031         dbg("%s -  port %d", __func__, port->number);
1032         usb_clear_halt(serial->dev, port->write_urb->pipe);
1033         usb_clear_halt(serial->dev, port->read_urb->pipe);
1034
1035         buf = kmalloc(10, GFP_KERNEL);
1036         if (buf == NULL)
1037                 return -ENOMEM;
1038
1039         /* fixup the endpoint buffer size */
1040         kfree(port->bulk_out_buffer);
1041         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1042         port->bulk_out_size = 512;
1043         kfree(port->bulk_in_buffer);
1044         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1045         port->bulk_in_size = 512;
1046
1047         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1048                 kfree(port->bulk_out_buffer);
1049                 kfree(port->bulk_in_buffer);
1050                 kfree(buf);
1051                 return -ENOMEM;
1052         }
1053
1054         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1055                           usb_sndbulkpipe(port->serial->dev,
1056                                           port->bulk_out_endpointAddress),
1057                           port->bulk_out_buffer, 512,
1058                           NULL, NULL);
1059
1060
1061         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1062                           usb_rcvbulkpipe(port->serial->dev,
1063                                           port->bulk_in_endpointAddress),
1064                           port->bulk_in_buffer, 512,
1065                           NULL, NULL);
1066
1067         /* set the termios structure */
1068         spin_lock_irqsave(&priv->lock, flags);
1069         if (tty && !priv->termios_initialized) {
1070                 *(tty->termios) = tty_std_termios;
1071                 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1072                                         | TIOCM_CTS | CSTOPB | PARENB;
1073                 tty->termios->c_ispeed = 9600;
1074                 tty->termios->c_ospeed = 9600;
1075                 tty->termios->c_lflag = 0;
1076                 tty->termios->c_oflag = 0;
1077                 tty->termios->c_iflag = 0;
1078                 priv->termios_initialized = 1;
1079                 priv->poll = 0;
1080          }
1081         spin_unlock_irqrestore(&priv->lock, flags);
1082
1083         /* initialize writebuf */
1084 #define FISH(a, b, c, d) do { \
1085         result = usb_control_msg(port->serial->dev,     \
1086                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1087                                 b, a, c, d, buf, 1, 1000); \
1088         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1089                                 buf[0]); } while (0);
1090
1091 #define SOUP(a, b, c, d)  do { \
1092         result = usb_control_msg(port->serial->dev,     \
1093                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1094                                 b, a, c, d, NULL, 0, 1000); \
1095         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1096
1097         /*  This is not UART related but IUU USB driver related or something */
1098         /*  like that. Basically no IUU will accept any commands from the USB */
1099         /*  host unless it has received the following message */
1100         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1101
1102         SOUP(0x03, 0x02, 0x02, 0x0);
1103         kfree(buf);
1104         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1105         iuu_uart_on(port);
1106         if (boost < 100)
1107                 boost = 100;
1108         switch (clockmode) {
1109         case 2:         /*  3.680 Mhz */
1110                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1111                 result =
1112                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1113                                   IUU_PARITY_EVEN);
1114                 break;
1115         case 3:         /*  6.00 Mhz */
1116                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1117                 result =
1118                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1119                                   IUU_PARITY_EVEN);
1120                 break;
1121         default:                /*  3.579 Mhz */
1122                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1123                 result =
1124                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1125                                   IUU_PARITY_EVEN);
1126         }
1127
1128         /* set the cardin cardout signals */
1129         switch (cdmode) {
1130         case 0:
1131                 iuu_cardin = 0;
1132                 iuu_cardout = 0;
1133                 break;
1134         case 1:
1135                 iuu_cardin = TIOCM_CD;
1136                 iuu_cardout =  0;
1137                 break;
1138         case 2:
1139                 iuu_cardin = 0;
1140                 iuu_cardout = TIOCM_CD;
1141                 break;
1142         case 3:
1143                 iuu_cardin = TIOCM_DSR;
1144                 iuu_cardout = 0;
1145                 break;
1146         case 4:
1147                 iuu_cardin = 0;
1148                 iuu_cardout = TIOCM_DSR;
1149                 break;
1150         case 5:
1151                 iuu_cardin = TIOCM_CTS;
1152                 iuu_cardout = 0;
1153                 break;
1154         case 6:
1155                 iuu_cardin = 0;
1156                 iuu_cardout = TIOCM_CTS;
1157                 break;
1158         case 7:
1159                 iuu_cardin = TIOCM_RNG;
1160                 iuu_cardout = 0;
1161                 break;
1162         case 8:
1163                 iuu_cardin = 0;
1164                 iuu_cardout = TIOCM_RNG;
1165         }
1166
1167         iuu_uart_flush(port);
1168
1169         dbg("%s - initialization done", __func__);
1170
1171         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1172         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1173                           usb_sndbulkpipe(port->serial->dev,
1174                                           port->bulk_out_endpointAddress),
1175                           port->write_urb->transfer_buffer, 1,
1176                           read_rxcmd_callback, port);
1177         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1178
1179         if (result) {
1180                 dev_err(&port->dev, "%s - failed submitting read urb,"
1181                         " error %d\n", __func__, result);
1182                 iuu_close(port);
1183                 return -EPROTO;
1184         } else {
1185                 dbg("%s - rxcmd OK", __func__);
1186         }
1187         return result;
1188 }
1189
1190 static struct usb_serial_driver iuu_device = {
1191         .driver = {
1192                    .owner = THIS_MODULE,
1193                    .name = "iuu_phoenix",
1194                    },
1195         .id_table = id_table,
1196         .num_ports = 1,
1197         .open = iuu_open,
1198         .close = iuu_close,
1199         .write = iuu_uart_write,
1200         .read_bulk_callback = iuu_uart_read_callback,
1201         .tiocmget = iuu_tiocmget,
1202         .tiocmset = iuu_tiocmset,
1203         .set_termios = iuu_set_termios,
1204         .attach = iuu_startup,
1205         .release = iuu_release,
1206 };
1207
1208 static int __init iuu_init(void)
1209 {
1210         int retval;
1211         retval = usb_serial_register(&iuu_device);
1212         if (retval)
1213                 goto failed_usb_serial_register;
1214         retval = usb_register(&iuu_driver);
1215         if (retval)
1216                 goto failed_usb_register;
1217         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1218                DRIVER_DESC "\n");
1219         return 0;
1220 failed_usb_register:
1221         usb_serial_deregister(&iuu_device);
1222 failed_usb_serial_register:
1223         return retval;
1224 }
1225
1226 static void __exit iuu_exit(void)
1227 {
1228         usb_deregister(&iuu_driver);
1229         usb_serial_deregister(&iuu_device);
1230 }
1231
1232 module_init(iuu_init);
1233 module_exit(iuu_exit);
1234
1235 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1236
1237 MODULE_DESCRIPTION(DRIVER_DESC);
1238 MODULE_LICENSE("GPL");
1239
1240 MODULE_VERSION(DRIVER_VERSION);
1241 module_param(debug, bool, S_IRUGO | S_IWUSR);
1242 MODULE_PARM_DESC(debug, "Debug enabled or not");
1243
1244 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1245 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1246
1247 module_param(boost, int, S_IRUGO | S_IWUSR);
1248 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1249
1250 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1251 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1252
1253 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1254 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1255                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");