drivers/usb/serial/iuu_phoenix.c

   1 /*
   2  * Infinity Unlimited USB Phoenix driver
   3  *
   4  * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
   5
   6  * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
   7  *
   8  * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos BorrÃ¡s)
   9  *
  10  *      This program is free software; you can redistribute it and/or modify
  11  *      it under the terms of the GNU General Public License as published by
  12  *      the Free Software Foundation; either version 2 of the License, or
  13  *      (at your option) any later version.
  14  *
  15  *  And tested with help of WB Electronics
  16  *
  17  */
  18 #include <linux/kernel.h>
  19 #include <linux/errno.h>
  20 #include <linux/init.h>
  21 #include <linux/slab.h>
  22 #include <linux/tty.h>
  23 #include <linux/tty_driver.h>
  24 #include <linux/tty_flip.h>
  25 #include <linux/serial.h>
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/spinlock.h>
  29 #include <linux/uaccess.h>
  30 #include <linux/usb.h>
  31 #include <linux/usb/serial.h>
  32 #include "iuu_phoenix.h"
  33 #include <linux/random.h>
  34
  35 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
  36
  37 static const struct usb_device_id id_table[] = {
  38         {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
  39         {}                      /* Terminating entry */
  40 };
  41 MODULE_DEVICE_TABLE(usb, id_table);
  42
  43 /* turbo parameter */
  44 static int boost = 100;
  45 static int clockmode = 1;
  46 static int cdmode = 1;
  47 static int iuu_cardin;
  48 static int iuu_cardout;
  49 static bool xmas;
  50 static int vcc_default = 5;
  51
  52 static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
  53 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
  54 static void read_rxcmd_callback(struct urb *urb);
  55
  56 struct iuu_private {
  57         spinlock_t lock;        /* store irq state */
  58         wait_queue_head_t delta_msr_wait;
  59         u8 line_status;
  60         int tiostatus;          /* store IUART SIGNAL for tiocmget call */
  61         u8 reset;               /* if 1 reset is needed */
  62         int poll;               /* number of poll */
  63         u8 *writebuf;           /* buffer for writing to device */
  64         int writelen;           /* num of byte to write to device */
  65         u8 *buf;                /* used for initialize speed */
  66         u8 len;
  67         int vcc;                /* vcc (either 3 or 5 V) */
  68         u32 baud;
  69         u32 boost;
  70         u32 clk;
  71 };
  72
  73 static int iuu_port_probe(struct usb_serial_port *port)
  74 {
  75         struct iuu_private *priv;
  76         int ret;
  77
  78         priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
  79         if (!priv)
  80                 return -ENOMEM;
  81
  82         priv->buf = kzalloc(256, GFP_KERNEL);
  83         if (!priv->buf) {
  84                 kfree(priv);
  85                 return -ENOMEM;
  86         }
  87
  88         priv->writebuf = kzalloc(256, GFP_KERNEL);
  89         if (!priv->writebuf) {
  90                 kfree(priv->buf);
  91                 kfree(priv);
  92                 return -ENOMEM;
  93         }
  94
  95         priv->vcc = vcc_default;
  96         spin_lock_init(&priv->lock);
  97         init_waitqueue_head(&priv->delta_msr_wait);
  98
  99         usb_set_serial_port_data(port, priv);
 100
 101         ret = iuu_create_sysfs_attrs(port);
 102         if (ret) {
 103                 kfree(priv->writebuf);
 104                 kfree(priv->buf);
 105                 kfree(priv);
 106                 return ret;
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int iuu_port_remove(struct usb_serial_port *port)
 113 {
 114         struct iuu_private *priv = usb_get_serial_port_data(port);
 115
 116         iuu_remove_sysfs_attrs(port);
 117         kfree(priv->writebuf);
 118         kfree(priv->buf);
 119         kfree(priv);
 120
 121         return 0;
 122 }
 123
 124 static int iuu_tiocmset(struct tty_struct *tty,
 125                         unsigned int set, unsigned int clear)
 126 {
 127         struct usb_serial_port *port = tty->driver_data;
 128         struct iuu_private *priv = usb_get_serial_port_data(port);
 129         unsigned long flags;
 130
 131         /* FIXME: locking on tiomstatus */
 132         dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
 133                 __func__, set, clear);
 134
 135         spin_lock_irqsave(&priv->lock, flags);
 136
 137         if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
 138                 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
 139                 priv->reset = 1;
 140         }
 141         if (set & TIOCM_RTS)
 142                 priv->tiostatus = TIOCM_RTS;
 143
 144         spin_unlock_irqrestore(&priv->lock, flags);
 145         return 0;
 146 }
 147
 148 /* This is used to provide a carrier detect mechanism
 149  * When a card is present, the response is 0x00
 150  * When no card , the reader respond with TIOCM_CD
 151  * This is known as CD autodetect mechanism
 152  */
 153 static int iuu_tiocmget(struct tty_struct *tty)
 154 {
 155         struct usb_serial_port *port = tty->driver_data;
 156         struct iuu_private *priv = usb_get_serial_port_data(port);
 157         unsigned long flags;
 158         int rc;
 159
 160         spin_lock_irqsave(&priv->lock, flags);
 161         rc = priv->tiostatus;
 162         spin_unlock_irqrestore(&priv->lock, flags);
 163
 164         return rc;
 165 }
 166
 167 static void iuu_rxcmd(struct urb *urb)
 168 {
 169         struct usb_serial_port *port = urb->context;
 170         int result;
 171         int status = urb->status;
 172
 173         if (status) {
 174                 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
 175                 /* error stop all */
 176                 return;
 177         }
 178
 179
 180         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
 181         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 182                           usb_sndbulkpipe(port->serial->dev,
 183                                           port->bulk_out_endpointAddress),
 184                           port->write_urb->transfer_buffer, 1,
 185                           read_rxcmd_callback, port);
 186         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 187 }
 188
 189 static int iuu_reset(struct usb_serial_port *port, u8 wt)
 190 {
 191         struct iuu_private *priv = usb_get_serial_port_data(port);
 192         int result;
 193         char *buf_ptr = port->write_urb->transfer_buffer;
 194
 195         /* Prepare the reset sequence */
 196
 197         *buf_ptr++ = IUU_RST_SET;
 198         *buf_ptr++ = IUU_DELAY_MS;
 199         *buf_ptr++ = wt;
 200         *buf_ptr = IUU_RST_CLEAR;
 201
 202         /* send the sequence */
 203
 204         usb_fill_bulk_urb(port->write_urb,
 205                           port->serial->dev,
 206                           usb_sndbulkpipe(port->serial->dev,
 207                                           port->bulk_out_endpointAddress),
 208                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
 209         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 210         priv->reset = 0;
 211         return result;
 212 }
 213
 214 /* Status Function
 215  * Return value is
 216  * 0x00 = no card
 217  * 0x01 = smartcard
 218  * 0x02 = sim card
 219  */
 220 static void iuu_update_status_callback(struct urb *urb)
 221 {
 222         struct usb_serial_port *port = urb->context;
 223         struct iuu_private *priv = usb_get_serial_port_data(port);
 224         u8 *st;
 225         int status = urb->status;
 226
 227         if (status) {
 228                 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
 229                 /* error stop all */
 230                 return;
 231         }
 232
 233         st = urb->transfer_buffer;
 234         dev_dbg(&port->dev, "%s - enter\n", __func__);
 235         if (urb->actual_length == 1) {
 236                 switch (st[0]) {
 237                 case 0x1:
 238                         priv->tiostatus = iuu_cardout;
 239                         break;
 240                 case 0x0:
 241                         priv->tiostatus = iuu_cardin;
 242                         break;
 243                 default:
 244                         priv->tiostatus = iuu_cardin;
 245                 }
 246         }
 247         iuu_rxcmd(urb);
 248 }
 249
 250 static void iuu_status_callback(struct urb *urb)
 251 {
 252         struct usb_serial_port *port = urb->context;
 253         int result;
 254         int status = urb->status;
 255
 256         dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
 257         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 258                           usb_rcvbulkpipe(port->serial->dev,
 259                                           port->bulk_in_endpointAddress),
 260                           port->read_urb->transfer_buffer, 256,
 261                           iuu_update_status_callback, port);
 262         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 263 }
 264
 265 static int iuu_status(struct usb_serial_port *port)
 266 {
 267         int result;
 268
 269         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
 270         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 271                           usb_sndbulkpipe(port->serial->dev,
 272                                           port->bulk_out_endpointAddress),
 273                           port->write_urb->transfer_buffer, 1,
 274                           iuu_status_callback, port);
 275         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 276         return result;
 277
 278 }
 279
 280 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 281 {
 282         int status;
 283         struct usb_serial *serial = port->serial;
 284         int actual = 0;
 285
 286         /* send the data out the bulk port */
 287
 288         status =
 289             usb_bulk_msg(serial->dev,
 290                          usb_sndbulkpipe(serial->dev,
 291                                          port->bulk_out_endpointAddress), buf,
 292                          count, &actual, HZ * 1);
 293
 294         if (status != IUU_OPERATION_OK)
 295                 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
 296         else
 297                 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
 298         return status;
 299 }
 300
 301 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
 302 {
 303         int status;
 304         struct usb_serial *serial = port->serial;
 305         int actual = 0;
 306
 307         /* send the data out the bulk port */
 308         status =
 309             usb_bulk_msg(serial->dev,
 310                          usb_rcvbulkpipe(serial->dev,
 311                                          port->bulk_in_endpointAddress), buf,
 312                          count, &actual, HZ * 1);
 313
 314         if (status != IUU_OPERATION_OK)
 315                 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
 316         else
 317                 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
 318         return status;
 319 }
 320
 321 static int iuu_led(struct usb_serial_port *port, unsigned int R,
 322                    unsigned int G, unsigned int B, u8 f)
 323 {
 324         int status;
 325         u8 *buf;
 326         buf = kmalloc(8, GFP_KERNEL);
 327         if (!buf)
 328                 return -ENOMEM;
 329
 330         buf[0] = IUU_SET_LED;
 331         buf[1] = R & 0xFF;
 332         buf[2] = (R >> 8) & 0xFF;
 333         buf[3] = G & 0xFF;
 334         buf[4] = (G >> 8) & 0xFF;
 335         buf[5] = B & 0xFF;
 336         buf[6] = (B >> 8) & 0xFF;
 337         buf[7] = f;
 338         status = bulk_immediate(port, buf, 8);
 339         kfree(buf);
 340         if (status != IUU_OPERATION_OK)
 341                 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
 342         else
 343                 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
 344         return IUU_OPERATION_OK;
 345 }
 346
 347 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
 348                                  u8 b2, u8 freq)
 349 {
 350         *buf++ = IUU_SET_LED;
 351         *buf++ = r1;
 352         *buf++ = r2;
 353         *buf++ = g1;
 354         *buf++ = g2;
 355         *buf++ = b1;
 356         *buf++ = b2;
 357         *buf = freq;
 358 }
 359
 360 static void iuu_led_activity_on(struct urb *urb)
 361 {
 362         struct usb_serial_port *port = urb->context;
 363         int result;
 364         char *buf_ptr = port->write_urb->transfer_buffer;
 365         *buf_ptr++ = IUU_SET_LED;
 366         if (xmas == 1) {
 367                 get_random_bytes(buf_ptr, 6);
 368                 *(buf_ptr+7) = 1;
 369         } else {
 370                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
 371         }
 372
 373         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 374                           usb_sndbulkpipe(port->serial->dev,
 375                                           port->bulk_out_endpointAddress),
 376                           port->write_urb->transfer_buffer, 8 ,
 377                           iuu_rxcmd, port);
 378         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 379 }
 380
 381 static void iuu_led_activity_off(struct urb *urb)
 382 {
 383         struct usb_serial_port *port = urb->context;
 384         int result;
 385         char *buf_ptr = port->write_urb->transfer_buffer;
 386         if (xmas == 1) {
 387                 iuu_rxcmd(urb);
 388                 return;
 389         } else {
 390                 *buf_ptr++ = IUU_SET_LED;
 391                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 392         }
 393         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 394                           usb_sndbulkpipe(port->serial->dev,
 395                                           port->bulk_out_endpointAddress),
 396                           port->write_urb->transfer_buffer, 8 ,
 397                           iuu_rxcmd, port);
 398         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 399 }
 400
 401
 402
 403 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
 404 {
 405         int status;
 406         struct iuu_private *priv = usb_get_serial_port_data(port);
 407         int Count = 0;
 408         u8 FrqGenAdr = 0x69;
 409         u8 DIV = 0;             /* 8bit */
 410         u8 XDRV = 0;            /* 8bit */
 411         u8 PUMP = 0;            /* 3bit */
 412         u8 PBmsb = 0;           /* 2bit */
 413         u8 PBlsb = 0;           /* 8bit */
 414         u8 PO = 0;              /* 1bit */
 415         u8 Q = 0;               /* 7bit */
 416         /* 24bit = 3bytes */
 417         unsigned int P = 0;
 418         unsigned int P2 = 0;
 419         int frq = (int)dwFrq;
 420
 421         if (frq == 0) {
 422                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
 423                 priv->buf[Count++] = FrqGenAdr << 1;
 424                 priv->buf[Count++] = 0x09;
 425                 priv->buf[Count++] = 0x00;
 426
 427                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
 428                 if (status != 0) {
 429                         dev_dbg(&port->dev, "%s - write error\n", __func__);
 430                         return status;
 431                 }
 432         } else if (frq == 3579000) {
 433                 DIV = 100;
 434                 P = 1193;
 435                 Q = 40;
 436                 XDRV = 0;
 437         } else if (frq == 3680000) {
 438                 DIV = 105;
 439                 P = 161;
 440                 Q = 5;
 441                 XDRV = 0;
 442         } else if (frq == 6000000) {
 443                 DIV = 66;
 444                 P = 66;
 445                 Q = 2;
 446                 XDRV = 0x28;
 447         } else {
 448                 unsigned int result = 0;
 449                 unsigned int tmp = 0;
 450                 unsigned int check;
 451                 unsigned int check2;
 452                 char found = 0x00;
 453                 unsigned int lQ = 2;
 454                 unsigned int lP = 2055;
 455                 unsigned int lDiv = 4;
 456
 457                 for (lQ = 2; lQ <= 47 && !found; lQ++)
 458                         for (lP = 2055; lP >= 8 && !found; lP--)
 459                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
 460                                         tmp = (12000000 / lDiv) * (lP / lQ);
 461                                         if (abs((int)(tmp - frq)) <
 462                                             abs((int)(frq - result))) {
 463                                                 check2 = (12000000 / lQ);
 464                                                 if (check2 < 250000)
 465                                                         continue;
 466                                                 check = (12000000 / lQ) * lP;
 467                                                 if (check > 400000000)
 468                                                         continue;
 469                                                 if (check < 100000000)
 470                                                         continue;
 471                                                 if (lDiv < 4 || lDiv > 127)
 472                                                         continue;
 473                                                 result = tmp;
 474                                                 P = lP;
 475                                                 DIV = lDiv;
 476                                                 Q = lQ;
 477                                                 if (result == frq)
 478                                                         found = 0x01;
 479                                         }
 480                                 }
 481         }
 482         P2 = ((P - PO) / 2) - 4;
 483         DIV = DIV;
 484         PUMP = 0x04;
 485         PBmsb = (P2 >> 8 & 0x03);
 486         PBlsb = P2 & 0xFF;
 487         PO = (P >> 10) & 0x01;
 488         Q = Q - 2;
 489
 490         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 491         priv->buf[Count++] = FrqGenAdr << 1;
 492         priv->buf[Count++] = 0x09;
 493         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
 494         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 495         priv->buf[Count++] = FrqGenAdr << 1;
 496         priv->buf[Count++] = 0x0C;
 497         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
 498         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
 499         priv->buf[Count++] = FrqGenAdr << 1;
 500         priv->buf[Count++] = 0x12;
 501         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
 502         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 503         priv->buf[Count++] = FrqGenAdr << 1;
 504         priv->buf[Count++] = 0x13;
 505         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
 506         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 507         priv->buf[Count++] = FrqGenAdr << 1;
 508         priv->buf[Count++] = 0x40;
 509         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
 510                              (PBmsb & 0x03);    /* Adr = 0x40 */
 511         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 512         priv->buf[Count++] = FrqGenAdr << 1;
 513         priv->buf[Count++] = 0x41;
 514         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
 515         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 516         priv->buf[Count++] = FrqGenAdr << 1;
 517         priv->buf[Count++] = 0x42;
 518         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
 519         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 520         priv->buf[Count++] = FrqGenAdr << 1;
 521         priv->buf[Count++] = 0x44;
 522         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
 523         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 524         priv->buf[Count++] = FrqGenAdr << 1;
 525         priv->buf[Count++] = 0x45;
 526         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
 527         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 528         priv->buf[Count++] = FrqGenAdr << 1;
 529         priv->buf[Count++] = 0x46;
 530         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
 531         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
 532         priv->buf[Count++] = FrqGenAdr << 1;
 533         priv->buf[Count++] = 0x47;
 534         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
 535
 536         status = bulk_immediate(port, (u8 *) priv->buf, Count);
 537         if (status != IUU_OPERATION_OK)
 538                 dev_dbg(&port->dev, "%s - write error\n", __func__);
 539         return status;
 540 }
 541
 542 static int iuu_uart_flush(struct usb_serial_port *port)
 543 {
 544         struct device *dev = &port->dev;
 545         int i;
 546         int status;
 547         u8 rxcmd = IUU_UART_RX;
 548         struct iuu_private *priv = usb_get_serial_port_data(port);
 549
 550         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 551                 return -EIO;
 552
 553         for (i = 0; i < 2; i++) {
 554                 status = bulk_immediate(port, &rxcmd, 1);
 555                 if (status != IUU_OPERATION_OK) {
 556                         dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
 557                         return status;
 558                 }
 559
 560                 status = read_immediate(port, &priv->len, 1);
 561                 if (status != IUU_OPERATION_OK) {
 562                         dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
 563                         return status;
 564                 }
 565
 566                 if (priv->len > 0) {
 567                         dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
 568                         status = read_immediate(port, priv->buf, priv->len);
 569                         if (status != IUU_OPERATION_OK) {
 570                                 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
 571                                 return status;
 572                         }
 573                 }
 574         }
 575         dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
 576         iuu_led(port, 0, 0xF000, 0, 0xFF);
 577         return status;
 578 }
 579
 580 static void read_buf_callback(struct urb *urb)
 581 {
 582         struct usb_serial_port *port = urb->context;
 583         unsigned char *data = urb->transfer_buffer;
 584         struct tty_struct *tty;
 585         int status = urb->status;
 586
 587         if (status) {
 588                 if (status == -EPROTO) {
 589                         /* reschedule needed */
 590                 }
 591                 return;
 592         }
 593
 594         dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
 595         tty = tty_port_tty_get(&port->port);
 596         if (data == NULL)
 597                 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
 598         if (tty && urb->actual_length && data) {
 599                 tty_insert_flip_string(tty, data, urb->actual_length);
 600                 tty_flip_buffer_push(tty);
 601         }
 602         tty_kref_put(tty);
 603         iuu_led_activity_on(urb);
 604 }
 605
 606 static int iuu_bulk_write(struct usb_serial_port *port)
 607 {
 608         struct iuu_private *priv = usb_get_serial_port_data(port);
 609         unsigned long flags;
 610         int result;
 611         int buf_len;
 612         char *buf_ptr = port->write_urb->transfer_buffer;
 613
 614         spin_lock_irqsave(&priv->lock, flags);
 615         *buf_ptr++ = IUU_UART_ESC;
 616         *buf_ptr++ = IUU_UART_TX;
 617         *buf_ptr++ = priv->writelen;
 618
 619         memcpy(buf_ptr, priv->writebuf, priv->writelen);
 620         buf_len = priv->writelen;
 621         priv->writelen = 0;
 622         spin_unlock_irqrestore(&priv->lock, flags);
 623         dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
 624                 buf_len, buf_len, buf_ptr);
 625         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
 626                           usb_sndbulkpipe(port->serial->dev,
 627                                           port->bulk_out_endpointAddress),
 628                           port->write_urb->transfer_buffer, buf_len + 3,
 629                           iuu_rxcmd, port);
 630         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 631         usb_serial_port_softint(port);
 632         return result;
 633 }
 634
 635 static int iuu_read_buf(struct usb_serial_port *port, int len)
 636 {
 637         int result;
 638
 639         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 640                           usb_rcvbulkpipe(port->serial->dev,
 641                                           port->bulk_in_endpointAddress),
 642                           port->read_urb->transfer_buffer, len,
 643                           read_buf_callback, port);
 644         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 645         return result;
 646 }
 647
 648 static void iuu_uart_read_callback(struct urb *urb)
 649 {
 650         struct usb_serial_port *port = urb->context;
 651         struct iuu_private *priv = usb_get_serial_port_data(port);
 652         unsigned long flags;
 653         int status = urb->status;
 654         int error = 0;
 655         int len = 0;
 656         unsigned char *data = urb->transfer_buffer;
 657         priv->poll++;
 658
 659         if (status) {
 660                 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
 661                 /* error stop all */
 662                 return;
 663         }
 664         if (data == NULL)
 665                 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
 666
 667         if (urb->actual_length == 1  && data != NULL)
 668                 len = (int) data[0];
 669
 670         if (urb->actual_length > 1) {
 671                 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
 672                     urb->actual_length);
 673                 error = 1;
 674                 return;
 675         }
 676         /* if len > 0 call readbuf */
 677
 678         if (len > 0 && error == 0) {
 679                 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
 680                         __func__, len);
 681                 status = iuu_read_buf(port, len);
 682                 return;
 683         }
 684         /* need to update status  ? */
 685         if (priv->poll > 99) {
 686                 status = iuu_status(port);
 687                 priv->poll = 0;
 688                 return;
 689         }
 690
 691         /* reset waiting ? */
 692
 693         if (priv->reset == 1) {
 694                 status = iuu_reset(port, 0xC);
 695                 return;
 696         }
 697         /* Writebuf is waiting */
 698         spin_lock_irqsave(&priv->lock, flags);
 699         if (priv->writelen > 0) {
 700                 spin_unlock_irqrestore(&priv->lock, flags);
 701                 status = iuu_bulk_write(port);
 702                 return;
 703         }
 704         spin_unlock_irqrestore(&priv->lock, flags);
 705         /* if nothing to write call again rxcmd */
 706         dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
 707         iuu_led_activity_off(urb);
 708 }
 709
 710 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
 711                           const u8 *buf, int count)
 712 {
 713         struct iuu_private *priv = usb_get_serial_port_data(port);
 714         unsigned long flags;
 715
 716         if (count > 256)
 717                 return -ENOMEM;
 718
 719         spin_lock_irqsave(&priv->lock, flags);
 720
 721         /* fill the buffer */
 722         memcpy(priv->writebuf + priv->writelen, buf, count);
 723         priv->writelen += count;
 724         spin_unlock_irqrestore(&priv->lock, flags);
 725
 726         return count;
 727 }
 728
 729 static void read_rxcmd_callback(struct urb *urb)
 730 {
 731         struct usb_serial_port *port = urb->context;
 732         int result;
 733         int status = urb->status;
 734
 735         if (status) {
 736                 /* error stop all */
 737                 return;
 738         }
 739
 740         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
 741                           usb_rcvbulkpipe(port->serial->dev,
 742                                           port->bulk_in_endpointAddress),
 743                           port->read_urb->transfer_buffer, 256,
 744                           iuu_uart_read_callback, port);
 745         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 746         dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
 747 }
 748
 749 static int iuu_uart_on(struct usb_serial_port *port)
 750 {
 751         int status;
 752         u8 *buf;
 753
 754         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
 755
 756         if (!buf)
 757                 return -ENOMEM;
 758
 759         buf[0] = IUU_UART_ENABLE;
 760         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
 761         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
 762         buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
 763
 764         status = bulk_immediate(port, buf, 4);
 765         if (status != IUU_OPERATION_OK) {
 766                 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
 767                 goto uart_enable_failed;
 768         }
 769         /*  iuu_reset() the card after iuu_uart_on() */
 770         status = iuu_uart_flush(port);
 771         if (status != IUU_OPERATION_OK)
 772                 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
 773 uart_enable_failed:
 774         kfree(buf);
 775         return status;
 776 }
 777
 778 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
 779 static int iuu_uart_off(struct usb_serial_port *port)
 780 {
 781         int status;
 782         u8 *buf;
 783         buf = kmalloc(1, GFP_KERNEL);
 784         if (!buf)
 785                 return -ENOMEM;
 786         buf[0] = IUU_UART_DISABLE;
 787
 788         status = bulk_immediate(port, buf, 1);
 789         if (status != IUU_OPERATION_OK)
 790                 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
 791
 792         kfree(buf);
 793         return status;
 794 }
 795
 796 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
 797                          u32 *actual, u8 parity)
 798 {
 799         int status;
 800         u32 baud;
 801         u8 *dataout;
 802         u8 DataCount = 0;
 803         u8 T1Frekvens = 0;
 804         u8 T1reload = 0;
 805         unsigned int T1FrekvensHZ = 0;
 806
 807         dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
 808         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
 809
 810         if (!dataout)
 811                 return -ENOMEM;
 812         /*baud = (((priv->clk / 35) * baud_base) / 100000); */
 813         baud = baud_base;
 814
 815         if (baud < 1200 || baud > 230400) {
 816                 kfree(dataout);
 817                 return IUU_INVALID_PARAMETER;
 818         }
 819         if (baud > 977) {
 820                 T1Frekvens = 3;
 821                 T1FrekvensHZ = 500000;
 822         }
 823
 824         if (baud > 3906) {
 825                 T1Frekvens = 2;
 826                 T1FrekvensHZ = 2000000;
 827         }
 828
 829         if (baud > 11718) {
 830                 T1Frekvens = 1;
 831                 T1FrekvensHZ = 6000000;
 832         }
 833
 834         if (baud > 46875) {
 835                 T1Frekvens = 0;
 836                 T1FrekvensHZ = 24000000;
 837         }
 838
 839         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 840
 841         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
 842         dataout[DataCount++] = IUU_UART_ESC;
 843         /*  magic number here:  CHANGE_BAUD; */
 844         dataout[DataCount++] = IUU_UART_CHANGE;
 845         dataout[DataCount++] = T1Frekvens;
 846         dataout[DataCount++] = T1reload;
 847
 848         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 849
 850         switch (parity & 0x0F) {
 851         case IUU_PARITY_NONE:
 852                 dataout[DataCount++] = 0x00;
 853                 break;
 854         case IUU_PARITY_EVEN:
 855                 dataout[DataCount++] = 0x01;
 856                 break;
 857         case IUU_PARITY_ODD:
 858                 dataout[DataCount++] = 0x02;
 859                 break;
 860         case IUU_PARITY_MARK:
 861                 dataout[DataCount++] = 0x03;
 862                 break;
 863         case IUU_PARITY_SPACE:
 864                 dataout[DataCount++] = 0x04;
 865                 break;
 866         default:
 867                 kfree(dataout);
 868                 return IUU_INVALID_PARAMETER;
 869                 break;
 870         }
 871
 872         switch (parity & 0xF0) {
 873         case IUU_ONE_STOP_BIT:
 874                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
 875                 break;
 876
 877         case IUU_TWO_STOP_BITS:
 878                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
 879                 break;
 880         default:
 881                 kfree(dataout);
 882                 return IUU_INVALID_PARAMETER;
 883                 break;
 884         }
 885
 886         status = bulk_immediate(port, dataout, DataCount);
 887         if (status != IUU_OPERATION_OK)
 888                 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
 889         kfree(dataout);
 890         return status;
 891 }
 892
 893 static void iuu_set_termios(struct tty_struct *tty,
 894                 struct usb_serial_port *port, struct ktermios *old_termios)
 895 {
 896         const u32 supported_mask = CMSPAR|PARENB|PARODD;
 897         struct iuu_private *priv = usb_get_serial_port_data(port);
 898         unsigned int cflag = tty->termios.c_cflag;
 899         int status;
 900         u32 actual;
 901         u32 parity;
 902         int csize = CS7;
 903         int baud;
 904         u32 newval = cflag & supported_mask;
 905
 906         /* Just use the ospeed. ispeed should be the same. */
 907         baud = tty->termios.c_ospeed;
 908
 909         dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
 910
 911         /* compute the parity parameter */
 912         parity = 0;
 913         if (cflag & CMSPAR) {   /* Using mark space */
 914                 if (cflag & PARODD)
 915                         parity |= IUU_PARITY_SPACE;
 916                 else
 917                         parity |= IUU_PARITY_MARK;
 918         } else if (!(cflag & PARENB)) {
 919                 parity |= IUU_PARITY_NONE;
 920                 csize = CS8;
 921         } else if (cflag & PARODD)
 922                 parity |= IUU_PARITY_ODD;
 923         else
 924                 parity |= IUU_PARITY_EVEN;
 925
 926         parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
 927
 928         /* set it */
 929         status = iuu_uart_baud(port,
 930                         baud * priv->boost / 100,
 931                         &actual, parity);
 932
 933         /* set the termios value to the real one, so the user now what has
 934          * changed. We support few fields so its easies to copy the old hw
 935          * settings back over and then adjust them
 936          */
 937         if (old_termios)
 938                 tty_termios_copy_hw(&tty->termios, old_termios);
 939         if (status != 0)        /* Set failed - return old bits */
 940                 return;
 941         /* Re-encode speed, parity and csize */
 942         tty_encode_baud_rate(tty, baud, baud);
 943         tty->termios.c_cflag &= ~(supported_mask|CSIZE);
 944         tty->termios.c_cflag |= newval | csize;
 945 }
 946
 947 static void iuu_close(struct usb_serial_port *port)
 948 {
 949         /* iuu_led (port,255,0,0,0); */
 950         struct usb_serial *serial;
 951
 952         serial = port->serial;
 953         if (!serial)
 954                 return;
 955
 956         iuu_uart_off(port);
 957         if (serial->dev) {
 958                 /* free writebuf */
 959                 /* shutdown our urbs */
 960                 dev_dbg(&port->dev, "%s - shutting down urbs\n", __func__);
 961                 usb_kill_urb(port->write_urb);
 962                 usb_kill_urb(port->read_urb);
 963                 usb_kill_urb(port->interrupt_in_urb);
 964                 iuu_led(port, 0, 0, 0xF000, 0xFF);
 965         }
 966 }
 967
 968 static void iuu_init_termios(struct tty_struct *tty)
 969 {
 970         tty->termios = tty_std_termios;
 971         tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
 972                                 | TIOCM_CTS | CSTOPB | PARENB;
 973         tty->termios.c_ispeed = 9600;
 974         tty->termios.c_ospeed = 9600;
 975         tty->termios.c_lflag = 0;
 976         tty->termios.c_oflag = 0;
 977         tty->termios.c_iflag = 0;
 978 }
 979
 980 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
 981 {
 982         struct usb_serial *serial = port->serial;
 983         struct device *dev = &port->dev;
 984         u8 *buf;
 985         int result;
 986         int baud;
 987         u32 actual;
 988         struct iuu_private *priv = usb_get_serial_port_data(port);
 989
 990         baud = tty->termios.c_ospeed;
 991         tty->termios.c_ispeed = baud;
 992         /* Re-encode speed */
 993         tty_encode_baud_rate(tty, baud, baud);
 994
 995         dev_dbg(dev, "%s - baud %d\n", __func__, baud);
 996         usb_clear_halt(serial->dev, port->write_urb->pipe);
 997         usb_clear_halt(serial->dev, port->read_urb->pipe);
 998
 999         buf = kmalloc(10, GFP_KERNEL);
1000         if (buf == NULL)
1001                 return -ENOMEM;
1002
1003         priv->poll = 0;
1004
1005         /* initialize writebuf */
1006 #define FISH(a, b, c, d) do { \
1007         result = usb_control_msg(port->serial->dev,     \
1008                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1009                                 b, a, c, d, buf, 1, 1000); \
1010         dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x  %d - %x\n", a, b, c, d, result, \
1011                                 buf[0]); } while (0);
1012
1013 #define SOUP(a, b, c, d)  do { \
1014         result = usb_control_msg(port->serial->dev,     \
1015                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1016                                 b, a, c, d, NULL, 0, 1000); \
1017         dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x  %d\n", a, b, c, d, result); } while (0)
1018
1019         /*  This is not UART related but IUU USB driver related or something */
1020         /*  like that. Basically no IUU will accept any commands from the USB */
1021         /*  host unless it has received the following message */
1022         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1023
1024         SOUP(0x03, 0x02, 0x02, 0x0);
1025         kfree(buf);
1026         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1027         iuu_uart_on(port);
1028         if (boost < 100)
1029                 boost = 100;
1030         priv->boost = boost;
1031         priv->baud = baud;
1032         switch (clockmode) {
1033         case 2:         /*  3.680 Mhz */
1034                 priv->clk = IUU_CLK_3680000;
1035                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1036                 result =
1037                     iuu_uart_baud(port, baud * boost / 100, &actual,
1038                                   IUU_PARITY_EVEN);
1039                 break;
1040         case 3:         /*  6.00 Mhz */
1041                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1042                 priv->clk = IUU_CLK_6000000;
1043                 /* Ratio of 6000000 to 3500000 for baud 9600 */
1044                 result =
1045                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1046                                   IUU_PARITY_EVEN);
1047                 break;
1048         default:                /*  3.579 Mhz */
1049                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1050                 priv->clk = IUU_CLK_3579000;
1051                 result =
1052                     iuu_uart_baud(port, baud * boost / 100, &actual,
1053                                   IUU_PARITY_EVEN);
1054         }
1055
1056         /* set the cardin cardout signals */
1057         switch (cdmode) {
1058         case 0:
1059                 iuu_cardin = 0;
1060                 iuu_cardout = 0;
1061                 break;
1062         case 1:
1063                 iuu_cardin = TIOCM_CD;
1064                 iuu_cardout =  0;
1065                 break;
1066         case 2:
1067                 iuu_cardin = 0;
1068                 iuu_cardout = TIOCM_CD;
1069                 break;
1070         case 3:
1071                 iuu_cardin = TIOCM_DSR;
1072                 iuu_cardout = 0;
1073                 break;
1074         case 4:
1075                 iuu_cardin = 0;
1076                 iuu_cardout = TIOCM_DSR;
1077                 break;
1078         case 5:
1079                 iuu_cardin = TIOCM_CTS;
1080                 iuu_cardout = 0;
1081                 break;
1082         case 6:
1083                 iuu_cardin = 0;
1084                 iuu_cardout = TIOCM_CTS;
1085                 break;
1086         case 7:
1087                 iuu_cardin = TIOCM_RNG;
1088                 iuu_cardout = 0;
1089                 break;
1090         case 8:
1091                 iuu_cardin = 0;
1092                 iuu_cardout = TIOCM_RNG;
1093         }
1094
1095         iuu_uart_flush(port);
1096
1097         dev_dbg(dev, "%s - initialization done\n", __func__);
1098
1099         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1100         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1101                           usb_sndbulkpipe(port->serial->dev,
1102                                           port->bulk_out_endpointAddress),
1103                           port->write_urb->transfer_buffer, 1,
1104                           read_rxcmd_callback, port);
1105         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1106         if (result) {
1107                 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1108                 iuu_close(port);
1109         } else {
1110                 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1111         }
1112
1113         return result;
1114 }
1115
1116 /* how to change VCC */
1117 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1118 {
1119         int status;
1120         u8 *buf;
1121
1122         buf = kmalloc(5, GFP_KERNEL);
1123         if (!buf)
1124                 return -ENOMEM;
1125
1126         buf[0] = IUU_SET_VCC;
1127         buf[1] = vcc & 0xFF;
1128         buf[2] = (vcc >> 8) & 0xFF;
1129         buf[3] = (vcc >> 16) & 0xFF;
1130         buf[4] = (vcc >> 24) & 0xFF;
1131
1132         status = bulk_immediate(port, buf, 5);
1133         kfree(buf);
1134
1135         if (status != IUU_OPERATION_OK)
1136                 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1137         else
1138                 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1139
1140         return status;
1141 }
1142
1143 /*
1144  * Sysfs Attributes
1145  */
1146
1147 static ssize_t show_vcc_mode(struct device *dev,
1148         struct device_attribute *attr, char *buf)
1149 {
1150         struct usb_serial_port *port = to_usb_serial_port(dev);
1151         struct iuu_private *priv = usb_get_serial_port_data(port);
1152
1153         return sprintf(buf, "%d\n", priv->vcc);
1154 }
1155
1156 static ssize_t store_vcc_mode(struct device *dev,
1157         struct device_attribute *attr, const char *buf, size_t count)
1158 {
1159         struct usb_serial_port *port = to_usb_serial_port(dev);
1160         struct iuu_private *priv = usb_get_serial_port_data(port);
1161         unsigned long v;
1162
1163         if (kstrtoul(buf, 10, &v)) {
1164                 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1165                                 __func__, buf);
1166                 goto fail_store_vcc_mode;
1167         }
1168
1169         dev_dbg(dev, "%s: setting vcc_mode = %ld", __func__, v);
1170
1171         if ((v != 3) && (v != 5)) {
1172                 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1173         } else {
1174                 iuu_vcc_set(port, v);
1175                 priv->vcc = v;
1176         }
1177 fail_store_vcc_mode:
1178         return count;
1179 }
1180
1181 static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode,
1182         store_vcc_mode);
1183
1184 static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1185 {
1186         return device_create_file(&port->dev, &dev_attr_vcc_mode);
1187 }
1188
1189 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1190 {
1191         device_remove_file(&port->dev, &dev_attr_vcc_mode);
1192         return 0;
1193 }
1194
1195 /*
1196  * End Sysfs Attributes
1197  */
1198
1199 static struct usb_serial_driver iuu_device = {
1200         .driver = {
1201                    .owner = THIS_MODULE,
1202                    .name = "iuu_phoenix",
1203                    },
1204         .id_table = id_table,
1205         .num_ports = 1,
1206         .bulk_in_size = 512,
1207         .bulk_out_size = 512,
1208         .open = iuu_open,
1209         .close = iuu_close,
1210         .write = iuu_uart_write,
1211         .read_bulk_callback = iuu_uart_read_callback,
1212         .tiocmget = iuu_tiocmget,
1213         .tiocmset = iuu_tiocmset,
1214         .set_termios = iuu_set_termios,
1215         .init_termios = iuu_init_termios,
1216         .port_probe = iuu_port_probe,
1217         .port_remove = iuu_port_remove,
1218 };
1219
1220 static struct usb_serial_driver * const serial_drivers[] = {
1221         &iuu_device, NULL
1222 };
1223
1224 module_usb_serial_driver(serial_drivers, id_table);
1225
1226 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1227
1228 MODULE_DESCRIPTION(DRIVER_DESC);
1229 MODULE_LICENSE("GPL");
1230
1231 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1232 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1233
1234 module_param(boost, int, S_IRUGO | S_IWUSR);
1235 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1236
1237 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1238 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1239                 "3=6 Mhz)");
1240
1241 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1242 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1243                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1244
1245 module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1246 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1247                 "for 5V). Default to 5.");