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 Borrás) 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 /* 36 * Version Information 37 */ 38 #define DRIVER_VERSION "v0.12" 39 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver" 40 41 static const struct usb_device_id id_table[] = { 42 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 43 {} /* Terminating entry */ 44 }; 45 MODULE_DEVICE_TABLE(usb, id_table); 46 47 /* turbo parameter */ 48 static int boost = 100; 49 static int clockmode = 1; 50 static int cdmode = 1; 51 static int iuu_cardin; 52 static int iuu_cardout; 53 static bool xmas; 54 static int vcc_default = 5; 55 56 static int iuu_create_sysfs_attrs(struct usb_serial_port *port); 57 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port); 58 static void read_rxcmd_callback(struct urb *urb); 59 60 struct iuu_private { 61 spinlock_t lock; /* store irq state */ 62 wait_queue_head_t delta_msr_wait; 63 u8 line_status; 64 int tiostatus; /* store IUART SIGNAL for tiocmget call */ 65 u8 reset; /* if 1 reset is needed */ 66 int poll; /* number of poll */ 67 u8 *writebuf; /* buffer for writing to device */ 68 int writelen; /* num of byte to write to device */ 69 u8 *buf; /* used for initialize speed */ 70 u8 len; 71 int vcc; /* vcc (either 3 or 5 V) */ 72 u32 baud; 73 u32 boost; 74 u32 clk; 75 }; 76 77 static int iuu_port_probe(struct usb_serial_port *port) 78 { 79 struct iuu_private *priv; 80 int ret; 81 82 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL); 83 if (!priv) 84 return -ENOMEM; 85 86 priv->buf = kzalloc(256, GFP_KERNEL); 87 if (!priv->buf) { 88 kfree(priv); 89 return -ENOMEM; 90 } 91 92 priv->writebuf = kzalloc(256, GFP_KERNEL); 93 if (!priv->writebuf) { 94 kfree(priv->buf); 95 kfree(priv); 96 return -ENOMEM; 97 } 98 99 priv->vcc = vcc_default; 100 spin_lock_init(&priv->lock); 101 init_waitqueue_head(&priv->delta_msr_wait); 102 103 usb_set_serial_port_data(port, priv); 104 105 ret = iuu_create_sysfs_attrs(port); 106 if (ret) { 107 kfree(priv->writebuf); 108 kfree(priv->buf); 109 kfree(priv); 110 return ret; 111 } 112 113 return 0; 114 } 115 116 static int iuu_port_remove(struct usb_serial_port *port) 117 { 118 struct iuu_private *priv = usb_get_serial_port_data(port); 119 120 iuu_remove_sysfs_attrs(port); 121 kfree(priv->writebuf); 122 kfree(priv->buf); 123 kfree(priv); 124 125 return 0; 126 } 127 128 static int iuu_tiocmset(struct tty_struct *tty, 129 unsigned int set, unsigned int clear) 130 { 131 struct usb_serial_port *port = tty->driver_data; 132 struct iuu_private *priv = usb_get_serial_port_data(port); 133 unsigned long flags; 134 135 /* FIXME: locking on tiomstatus */ 136 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n", 137 __func__, set, clear); 138 139 spin_lock_irqsave(&priv->lock, flags); 140 141 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) { 142 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__); 143 priv->reset = 1; 144 } 145 if (set & TIOCM_RTS) 146 priv->tiostatus = TIOCM_RTS; 147 148 spin_unlock_irqrestore(&priv->lock, flags); 149 return 0; 150 } 151 152 /* This is used to provide a carrier detect mechanism 153 * When a card is present, the response is 0x00 154 * When no card , the reader respond with TIOCM_CD 155 * This is known as CD autodetect mechanism 156 */ 157 static int iuu_tiocmget(struct tty_struct *tty) 158 { 159 struct usb_serial_port *port = tty->driver_data; 160 struct iuu_private *priv = usb_get_serial_port_data(port); 161 unsigned long flags; 162 int rc; 163 164 spin_lock_irqsave(&priv->lock, flags); 165 rc = priv->tiostatus; 166 spin_unlock_irqrestore(&priv->lock, flags); 167 168 return rc; 169 } 170 171 static void iuu_rxcmd(struct urb *urb) 172 { 173 struct usb_serial_port *port = urb->context; 174 int result; 175 int status = urb->status; 176 177 if (status) { 178 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 179 /* error stop all */ 180 return; 181 } 182 183 184 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 185 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 186 usb_sndbulkpipe(port->serial->dev, 187 port->bulk_out_endpointAddress), 188 port->write_urb->transfer_buffer, 1, 189 read_rxcmd_callback, port); 190 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 191 } 192 193 static int iuu_reset(struct usb_serial_port *port, u8 wt) 194 { 195 struct iuu_private *priv = usb_get_serial_port_data(port); 196 int result; 197 char *buf_ptr = port->write_urb->transfer_buffer; 198 199 /* Prepare the reset sequence */ 200 201 *buf_ptr++ = IUU_RST_SET; 202 *buf_ptr++ = IUU_DELAY_MS; 203 *buf_ptr++ = wt; 204 *buf_ptr = IUU_RST_CLEAR; 205 206 /* send the sequence */ 207 208 usb_fill_bulk_urb(port->write_urb, 209 port->serial->dev, 210 usb_sndbulkpipe(port->serial->dev, 211 port->bulk_out_endpointAddress), 212 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 213 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 214 priv->reset = 0; 215 return result; 216 } 217 218 /* Status Function 219 * Return value is 220 * 0x00 = no card 221 * 0x01 = smartcard 222 * 0x02 = sim card 223 */ 224 static void iuu_update_status_callback(struct urb *urb) 225 { 226 struct usb_serial_port *port = urb->context; 227 struct iuu_private *priv = usb_get_serial_port_data(port); 228 u8 *st; 229 int status = urb->status; 230 231 if (status) { 232 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 233 /* error stop all */ 234 return; 235 } 236 237 st = urb->transfer_buffer; 238 dev_dbg(&port->dev, "%s - enter\n", __func__); 239 if (urb->actual_length == 1) { 240 switch (st[0]) { 241 case 0x1: 242 priv->tiostatus = iuu_cardout; 243 break; 244 case 0x0: 245 priv->tiostatus = iuu_cardin; 246 break; 247 default: 248 priv->tiostatus = iuu_cardin; 249 } 250 } 251 iuu_rxcmd(urb); 252 } 253 254 static void iuu_status_callback(struct urb *urb) 255 { 256 struct usb_serial_port *port = urb->context; 257 int result; 258 int status = urb->status; 259 260 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 261 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 262 usb_rcvbulkpipe(port->serial->dev, 263 port->bulk_in_endpointAddress), 264 port->read_urb->transfer_buffer, 256, 265 iuu_update_status_callback, port); 266 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 267 } 268 269 static int iuu_status(struct usb_serial_port *port) 270 { 271 int result; 272 273 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 274 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 275 usb_sndbulkpipe(port->serial->dev, 276 port->bulk_out_endpointAddress), 277 port->write_urb->transfer_buffer, 1, 278 iuu_status_callback, port); 279 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 280 return result; 281 282 } 283 284 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 285 { 286 int status; 287 struct usb_serial *serial = port->serial; 288 int actual = 0; 289 290 /* send the data out the bulk port */ 291 292 status = 293 usb_bulk_msg(serial->dev, 294 usb_sndbulkpipe(serial->dev, 295 port->bulk_out_endpointAddress), buf, 296 count, &actual, HZ * 1); 297 298 if (status != IUU_OPERATION_OK) 299 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 300 else 301 dev_dbg(&port->dev, "%s - write OK !\n", __func__); 302 return status; 303 } 304 305 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 306 { 307 int status; 308 struct usb_serial *serial = port->serial; 309 int actual = 0; 310 311 /* send the data out the bulk port */ 312 status = 313 usb_bulk_msg(serial->dev, 314 usb_rcvbulkpipe(serial->dev, 315 port->bulk_in_endpointAddress), buf, 316 count, &actual, HZ * 1); 317 318 if (status != IUU_OPERATION_OK) 319 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 320 else 321 dev_dbg(&port->dev, "%s - read OK !\n", __func__); 322 return status; 323 } 324 325 static int iuu_led(struct usb_serial_port *port, unsigned int R, 326 unsigned int G, unsigned int B, u8 f) 327 { 328 int status; 329 u8 *buf; 330 buf = kmalloc(8, GFP_KERNEL); 331 if (!buf) 332 return -ENOMEM; 333 334 buf[0] = IUU_SET_LED; 335 buf[1] = R & 0xFF; 336 buf[2] = (R >> 8) & 0xFF; 337 buf[3] = G & 0xFF; 338 buf[4] = (G >> 8) & 0xFF; 339 buf[5] = B & 0xFF; 340 buf[6] = (B >> 8) & 0xFF; 341 buf[7] = f; 342 status = bulk_immediate(port, buf, 8); 343 kfree(buf); 344 if (status != IUU_OPERATION_OK) 345 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status); 346 else 347 dev_dbg(&port->dev, "%s - led OK !\n", __func__); 348 return IUU_OPERATION_OK; 349 } 350 351 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 352 u8 b2, u8 freq) 353 { 354 *buf++ = IUU_SET_LED; 355 *buf++ = r1; 356 *buf++ = r2; 357 *buf++ = g1; 358 *buf++ = g2; 359 *buf++ = b1; 360 *buf++ = b2; 361 *buf = freq; 362 } 363 364 static void iuu_led_activity_on(struct urb *urb) 365 { 366 struct usb_serial_port *port = urb->context; 367 int result; 368 char *buf_ptr = port->write_urb->transfer_buffer; 369 *buf_ptr++ = IUU_SET_LED; 370 if (xmas == 1) { 371 get_random_bytes(buf_ptr, 6); 372 *(buf_ptr+7) = 1; 373 } else { 374 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 375 } 376 377 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 378 usb_sndbulkpipe(port->serial->dev, 379 port->bulk_out_endpointAddress), 380 port->write_urb->transfer_buffer, 8 , 381 iuu_rxcmd, port); 382 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 383 } 384 385 static void iuu_led_activity_off(struct urb *urb) 386 { 387 struct usb_serial_port *port = urb->context; 388 int result; 389 char *buf_ptr = port->write_urb->transfer_buffer; 390 if (xmas == 1) { 391 iuu_rxcmd(urb); 392 return; 393 } else { 394 *buf_ptr++ = IUU_SET_LED; 395 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 396 } 397 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 398 usb_sndbulkpipe(port->serial->dev, 399 port->bulk_out_endpointAddress), 400 port->write_urb->transfer_buffer, 8 , 401 iuu_rxcmd, port); 402 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 403 } 404 405 406 407 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 408 { 409 int status; 410 struct iuu_private *priv = usb_get_serial_port_data(port); 411 int Count = 0; 412 u8 FrqGenAdr = 0x69; 413 u8 DIV = 0; /* 8bit */ 414 u8 XDRV = 0; /* 8bit */ 415 u8 PUMP = 0; /* 3bit */ 416 u8 PBmsb = 0; /* 2bit */ 417 u8 PBlsb = 0; /* 8bit */ 418 u8 PO = 0; /* 1bit */ 419 u8 Q = 0; /* 7bit */ 420 /* 24bit = 3bytes */ 421 unsigned int P = 0; 422 unsigned int P2 = 0; 423 int frq = (int)dwFrq; 424 425 if (frq == 0) { 426 priv->buf[Count++] = IUU_UART_WRITE_I2C; 427 priv->buf[Count++] = FrqGenAdr << 1; 428 priv->buf[Count++] = 0x09; 429 priv->buf[Count++] = 0x00; 430 431 status = bulk_immediate(port, (u8 *) priv->buf, Count); 432 if (status != 0) { 433 dev_dbg(&port->dev, "%s - write error\n", __func__); 434 return status; 435 } 436 } else if (frq == 3579000) { 437 DIV = 100; 438 P = 1193; 439 Q = 40; 440 XDRV = 0; 441 } else if (frq == 3680000) { 442 DIV = 105; 443 P = 161; 444 Q = 5; 445 XDRV = 0; 446 } else if (frq == 6000000) { 447 DIV = 66; 448 P = 66; 449 Q = 2; 450 XDRV = 0x28; 451 } else { 452 unsigned int result = 0; 453 unsigned int tmp = 0; 454 unsigned int check; 455 unsigned int check2; 456 char found = 0x00; 457 unsigned int lQ = 2; 458 unsigned int lP = 2055; 459 unsigned int lDiv = 4; 460 461 for (lQ = 2; lQ <= 47 && !found; lQ++) 462 for (lP = 2055; lP >= 8 && !found; lP--) 463 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 464 tmp = (12000000 / lDiv) * (lP / lQ); 465 if (abs((int)(tmp - frq)) < 466 abs((int)(frq - result))) { 467 check2 = (12000000 / lQ); 468 if (check2 < 250000) 469 continue; 470 check = (12000000 / lQ) * lP; 471 if (check > 400000000) 472 continue; 473 if (check < 100000000) 474 continue; 475 if (lDiv < 4 || lDiv > 127) 476 continue; 477 result = tmp; 478 P = lP; 479 DIV = lDiv; 480 Q = lQ; 481 if (result == frq) 482 found = 0x01; 483 } 484 } 485 } 486 P2 = ((P - PO) / 2) - 4; 487 DIV = DIV; 488 PUMP = 0x04; 489 PBmsb = (P2 >> 8 & 0x03); 490 PBlsb = P2 & 0xFF; 491 PO = (P >> 10) & 0x01; 492 Q = Q - 2; 493 494 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 495 priv->buf[Count++] = FrqGenAdr << 1; 496 priv->buf[Count++] = 0x09; 497 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 498 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 499 priv->buf[Count++] = FrqGenAdr << 1; 500 priv->buf[Count++] = 0x0C; 501 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 502 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 503 priv->buf[Count++] = FrqGenAdr << 1; 504 priv->buf[Count++] = 0x12; 505 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 506 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 507 priv->buf[Count++] = FrqGenAdr << 1; 508 priv->buf[Count++] = 0x13; 509 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 510 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 511 priv->buf[Count++] = FrqGenAdr << 1; 512 priv->buf[Count++] = 0x40; 513 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 514 (PBmsb & 0x03); /* Adr = 0x40 */ 515 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 516 priv->buf[Count++] = FrqGenAdr << 1; 517 priv->buf[Count++] = 0x41; 518 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 519 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 520 priv->buf[Count++] = FrqGenAdr << 1; 521 priv->buf[Count++] = 0x42; 522 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 523 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 524 priv->buf[Count++] = FrqGenAdr << 1; 525 priv->buf[Count++] = 0x44; 526 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 527 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 528 priv->buf[Count++] = FrqGenAdr << 1; 529 priv->buf[Count++] = 0x45; 530 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 531 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 532 priv->buf[Count++] = FrqGenAdr << 1; 533 priv->buf[Count++] = 0x46; 534 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 535 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 536 priv->buf[Count++] = FrqGenAdr << 1; 537 priv->buf[Count++] = 0x47; 538 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 539 540 status = bulk_immediate(port, (u8 *) priv->buf, Count); 541 if (status != IUU_OPERATION_OK) 542 dev_dbg(&port->dev, "%s - write error\n", __func__); 543 return status; 544 } 545 546 static int iuu_uart_flush(struct usb_serial_port *port) 547 { 548 struct device *dev = &port->dev; 549 int i; 550 int status; 551 u8 rxcmd = IUU_UART_RX; 552 struct iuu_private *priv = usb_get_serial_port_data(port); 553 554 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 555 return -EIO; 556 557 for (i = 0; i < 2; i++) { 558 status = bulk_immediate(port, &rxcmd, 1); 559 if (status != IUU_OPERATION_OK) { 560 dev_dbg(dev, "%s - uart_flush_write error\n", __func__); 561 return status; 562 } 563 564 status = read_immediate(port, &priv->len, 1); 565 if (status != IUU_OPERATION_OK) { 566 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 567 return status; 568 } 569 570 if (priv->len > 0) { 571 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len); 572 status = read_immediate(port, priv->buf, priv->len); 573 if (status != IUU_OPERATION_OK) { 574 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 575 return status; 576 } 577 } 578 } 579 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__); 580 iuu_led(port, 0, 0xF000, 0, 0xFF); 581 return status; 582 } 583 584 static void read_buf_callback(struct urb *urb) 585 { 586 struct usb_serial_port *port = urb->context; 587 unsigned char *data = urb->transfer_buffer; 588 struct tty_struct *tty; 589 int status = urb->status; 590 591 if (status) { 592 if (status == -EPROTO) { 593 /* reschedule needed */ 594 } 595 return; 596 } 597 598 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); 599 tty = tty_port_tty_get(&port->port); 600 if (data == NULL) 601 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); 602 if (tty && urb->actual_length && data) { 603 tty_insert_flip_string(tty, data, urb->actual_length); 604 tty_flip_buffer_push(tty); 605 } 606 tty_kref_put(tty); 607 iuu_led_activity_on(urb); 608 } 609 610 static int iuu_bulk_write(struct usb_serial_port *port) 611 { 612 struct iuu_private *priv = usb_get_serial_port_data(port); 613 unsigned long flags; 614 int result; 615 int buf_len; 616 char *buf_ptr = port->write_urb->transfer_buffer; 617 618 spin_lock_irqsave(&priv->lock, flags); 619 *buf_ptr++ = IUU_UART_ESC; 620 *buf_ptr++ = IUU_UART_TX; 621 *buf_ptr++ = priv->writelen; 622 623 memcpy(buf_ptr, priv->writebuf, priv->writelen); 624 buf_len = priv->writelen; 625 priv->writelen = 0; 626 spin_unlock_irqrestore(&priv->lock, flags); 627 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__, 628 buf_len, buf_len, buf_ptr); 629 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 630 usb_sndbulkpipe(port->serial->dev, 631 port->bulk_out_endpointAddress), 632 port->write_urb->transfer_buffer, buf_len + 3, 633 iuu_rxcmd, port); 634 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 635 usb_serial_port_softint(port); 636 return result; 637 } 638 639 static int iuu_read_buf(struct usb_serial_port *port, int len) 640 { 641 int result; 642 643 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 644 usb_rcvbulkpipe(port->serial->dev, 645 port->bulk_in_endpointAddress), 646 port->read_urb->transfer_buffer, len, 647 read_buf_callback, port); 648 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 649 return result; 650 } 651 652 static void iuu_uart_read_callback(struct urb *urb) 653 { 654 struct usb_serial_port *port = urb->context; 655 struct iuu_private *priv = usb_get_serial_port_data(port); 656 unsigned long flags; 657 int status = urb->status; 658 int error = 0; 659 int len = 0; 660 unsigned char *data = urb->transfer_buffer; 661 priv->poll++; 662 663 if (status) { 664 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 665 /* error stop all */ 666 return; 667 } 668 if (data == NULL) 669 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); 670 671 if (urb->actual_length == 1 && data != NULL) 672 len = (int) data[0]; 673 674 if (urb->actual_length > 1) { 675 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 676 urb->actual_length); 677 error = 1; 678 return; 679 } 680 /* if len > 0 call readbuf */ 681 682 if (len > 0 && error == 0) { 683 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 684 __func__, len); 685 status = iuu_read_buf(port, len); 686 return; 687 } 688 /* need to update status ? */ 689 if (priv->poll > 99) { 690 status = iuu_status(port); 691 priv->poll = 0; 692 return; 693 } 694 695 /* reset waiting ? */ 696 697 if (priv->reset == 1) { 698 status = iuu_reset(port, 0xC); 699 return; 700 } 701 /* Writebuf is waiting */ 702 spin_lock_irqsave(&priv->lock, flags); 703 if (priv->writelen > 0) { 704 spin_unlock_irqrestore(&priv->lock, flags); 705 status = iuu_bulk_write(port); 706 return; 707 } 708 spin_unlock_irqrestore(&priv->lock, flags); 709 /* if nothing to write call again rxcmd */ 710 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 711 iuu_led_activity_off(urb); 712 } 713 714 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 715 const u8 *buf, int count) 716 { 717 struct iuu_private *priv = usb_get_serial_port_data(port); 718 unsigned long flags; 719 720 if (count > 256) 721 return -ENOMEM; 722 723 spin_lock_irqsave(&priv->lock, flags); 724 725 /* fill the buffer */ 726 memcpy(priv->writebuf + priv->writelen, buf, count); 727 priv->writelen += count; 728 spin_unlock_irqrestore(&priv->lock, flags); 729 730 return count; 731 } 732 733 static void read_rxcmd_callback(struct urb *urb) 734 { 735 struct usb_serial_port *port = urb->context; 736 int result; 737 int status = urb->status; 738 739 if (status) { 740 /* error stop all */ 741 return; 742 } 743 744 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 745 usb_rcvbulkpipe(port->serial->dev, 746 port->bulk_in_endpointAddress), 747 port->read_urb->transfer_buffer, 256, 748 iuu_uart_read_callback, port); 749 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 750 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result); 751 } 752 753 static int iuu_uart_on(struct usb_serial_port *port) 754 { 755 int status; 756 u8 *buf; 757 758 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL); 759 760 if (!buf) 761 return -ENOMEM; 762 763 buf[0] = IUU_UART_ENABLE; 764 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 765 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 766 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 767 768 status = bulk_immediate(port, buf, 4); 769 if (status != IUU_OPERATION_OK) { 770 dev_dbg(&port->dev, "%s - uart_on error\n", __func__); 771 goto uart_enable_failed; 772 } 773 /* iuu_reset() the card after iuu_uart_on() */ 774 status = iuu_uart_flush(port); 775 if (status != IUU_OPERATION_OK) 776 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__); 777 uart_enable_failed: 778 kfree(buf); 779 return status; 780 } 781 782 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */ 783 static int iuu_uart_off(struct usb_serial_port *port) 784 { 785 int status; 786 u8 *buf; 787 buf = kmalloc(1, GFP_KERNEL); 788 if (!buf) 789 return -ENOMEM; 790 buf[0] = IUU_UART_DISABLE; 791 792 status = bulk_immediate(port, buf, 1); 793 if (status != IUU_OPERATION_OK) 794 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 795 796 kfree(buf); 797 return status; 798 } 799 800 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 801 u32 *actual, u8 parity) 802 { 803 int status; 804 u32 baud; 805 u8 *dataout; 806 u8 DataCount = 0; 807 u8 T1Frekvens = 0; 808 u8 T1reload = 0; 809 unsigned int T1FrekvensHZ = 0; 810 811 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); 812 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL); 813 814 if (!dataout) 815 return -ENOMEM; 816 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 817 baud = baud_base; 818 819 if (baud < 1200 || baud > 230400) { 820 kfree(dataout); 821 return IUU_INVALID_PARAMETER; 822 } 823 if (baud > 977) { 824 T1Frekvens = 3; 825 T1FrekvensHZ = 500000; 826 } 827 828 if (baud > 3906) { 829 T1Frekvens = 2; 830 T1FrekvensHZ = 2000000; 831 } 832 833 if (baud > 11718) { 834 T1Frekvens = 1; 835 T1FrekvensHZ = 6000000; 836 } 837 838 if (baud > 46875) { 839 T1Frekvens = 0; 840 T1FrekvensHZ = 24000000; 841 } 842 843 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 844 845 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 846 dataout[DataCount++] = IUU_UART_ESC; 847 /* magic number here: CHANGE_BAUD; */ 848 dataout[DataCount++] = IUU_UART_CHANGE; 849 dataout[DataCount++] = T1Frekvens; 850 dataout[DataCount++] = T1reload; 851 852 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 853 854 switch (parity & 0x0F) { 855 case IUU_PARITY_NONE: 856 dataout[DataCount++] = 0x00; 857 break; 858 case IUU_PARITY_EVEN: 859 dataout[DataCount++] = 0x01; 860 break; 861 case IUU_PARITY_ODD: 862 dataout[DataCount++] = 0x02; 863 break; 864 case IUU_PARITY_MARK: 865 dataout[DataCount++] = 0x03; 866 break; 867 case IUU_PARITY_SPACE: 868 dataout[DataCount++] = 0x04; 869 break; 870 default: 871 kfree(dataout); 872 return IUU_INVALID_PARAMETER; 873 break; 874 } 875 876 switch (parity & 0xF0) { 877 case IUU_ONE_STOP_BIT: 878 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 879 break; 880 881 case IUU_TWO_STOP_BITS: 882 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 883 break; 884 default: 885 kfree(dataout); 886 return IUU_INVALID_PARAMETER; 887 break; 888 } 889 890 status = bulk_immediate(port, dataout, DataCount); 891 if (status != IUU_OPERATION_OK) 892 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 893 kfree(dataout); 894 return status; 895 } 896 897 static void iuu_set_termios(struct tty_struct *tty, 898 struct usb_serial_port *port, struct ktermios *old_termios) 899 { 900 const u32 supported_mask = CMSPAR|PARENB|PARODD; 901 struct iuu_private *priv = usb_get_serial_port_data(port); 902 unsigned int cflag = tty->termios.c_cflag; 903 int status; 904 u32 actual; 905 u32 parity; 906 int csize = CS7; 907 int baud; 908 u32 newval = cflag & supported_mask; 909 910 /* Just use the ospeed. ispeed should be the same. */ 911 baud = tty->termios.c_ospeed; 912 913 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud); 914 915 /* compute the parity parameter */ 916 parity = 0; 917 if (cflag & CMSPAR) { /* Using mark space */ 918 if (cflag & PARODD) 919 parity |= IUU_PARITY_SPACE; 920 else 921 parity |= IUU_PARITY_MARK; 922 } else if (!(cflag & PARENB)) { 923 parity |= IUU_PARITY_NONE; 924 csize = CS8; 925 } else if (cflag & PARODD) 926 parity |= IUU_PARITY_ODD; 927 else 928 parity |= IUU_PARITY_EVEN; 929 930 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 931 932 /* set it */ 933 status = iuu_uart_baud(port, 934 baud * priv->boost / 100, 935 &actual, parity); 936 937 /* set the termios value to the real one, so the user now what has 938 * changed. We support few fields so its easies to copy the old hw 939 * settings back over and then adjust them 940 */ 941 if (old_termios) 942 tty_termios_copy_hw(&tty->termios, old_termios); 943 if (status != 0) /* Set failed - return old bits */ 944 return; 945 /* Re-encode speed, parity and csize */ 946 tty_encode_baud_rate(tty, baud, baud); 947 tty->termios.c_cflag &= ~(supported_mask|CSIZE); 948 tty->termios.c_cflag |= newval | csize; 949 } 950 951 static void iuu_close(struct usb_serial_port *port) 952 { 953 /* iuu_led (port,255,0,0,0); */ 954 struct usb_serial *serial; 955 956 serial = port->serial; 957 if (!serial) 958 return; 959 960 iuu_uart_off(port); 961 if (serial->dev) { 962 /* free writebuf */ 963 /* shutdown our urbs */ 964 dev_dbg(&port->dev, "%s - shutting down urbs\n", __func__); 965 usb_kill_urb(port->write_urb); 966 usb_kill_urb(port->read_urb); 967 usb_kill_urb(port->interrupt_in_urb); 968 iuu_led(port, 0, 0, 0xF000, 0xFF); 969 } 970 } 971 972 static void iuu_init_termios(struct tty_struct *tty) 973 { 974 tty->termios = tty_std_termios; 975 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600 976 | TIOCM_CTS | CSTOPB | PARENB; 977 tty->termios.c_ispeed = 9600; 978 tty->termios.c_ospeed = 9600; 979 tty->termios.c_lflag = 0; 980 tty->termios.c_oflag = 0; 981 tty->termios.c_iflag = 0; 982 } 983 984 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 985 { 986 struct usb_serial *serial = port->serial; 987 struct device *dev = &port->dev; 988 u8 *buf; 989 int result; 990 int baud; 991 u32 actual; 992 struct iuu_private *priv = usb_get_serial_port_data(port); 993 994 baud = tty->termios.c_ospeed; 995 tty->termios.c_ispeed = baud; 996 /* Re-encode speed */ 997 tty_encode_baud_rate(tty, baud, baud); 998 999 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 1000 usb_clear_halt(serial->dev, port->write_urb->pipe); 1001 usb_clear_halt(serial->dev, port->read_urb->pipe); 1002 1003 buf = kmalloc(10, GFP_KERNEL); 1004 if (buf == NULL) 1005 return -ENOMEM; 1006 1007 priv->poll = 0; 1008 1009 /* initialize writebuf */ 1010 #define FISH(a, b, c, d) do { \ 1011 result = usb_control_msg(port->serial->dev, \ 1012 usb_rcvctrlpipe(port->serial->dev, 0), \ 1013 b, a, c, d, buf, 1, 1000); \ 1014 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", a, b, c, d, result, \ 1015 buf[0]); } while (0); 1016 1017 #define SOUP(a, b, c, d) do { \ 1018 result = usb_control_msg(port->serial->dev, \ 1019 usb_sndctrlpipe(port->serial->dev, 0), \ 1020 b, a, c, d, NULL, 0, 1000); \ 1021 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 1022 1023 /* This is not UART related but IUU USB driver related or something */ 1024 /* like that. Basically no IUU will accept any commands from the USB */ 1025 /* host unless it has received the following message */ 1026 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1027 1028 SOUP(0x03, 0x02, 0x02, 0x0); 1029 kfree(buf); 1030 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1031 iuu_uart_on(port); 1032 if (boost < 100) 1033 boost = 100; 1034 priv->boost = boost; 1035 priv->baud = baud; 1036 switch (clockmode) { 1037 case 2: /* 3.680 Mhz */ 1038 priv->clk = IUU_CLK_3680000; 1039 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1040 result = 1041 iuu_uart_baud(port, baud * boost / 100, &actual, 1042 IUU_PARITY_EVEN); 1043 break; 1044 case 3: /* 6.00 Mhz */ 1045 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1046 priv->clk = IUU_CLK_6000000; 1047 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1048 result = 1049 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1050 IUU_PARITY_EVEN); 1051 break; 1052 default: /* 3.579 Mhz */ 1053 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1054 priv->clk = IUU_CLK_3579000; 1055 result = 1056 iuu_uart_baud(port, baud * boost / 100, &actual, 1057 IUU_PARITY_EVEN); 1058 } 1059 1060 /* set the cardin cardout signals */ 1061 switch (cdmode) { 1062 case 0: 1063 iuu_cardin = 0; 1064 iuu_cardout = 0; 1065 break; 1066 case 1: 1067 iuu_cardin = TIOCM_CD; 1068 iuu_cardout = 0; 1069 break; 1070 case 2: 1071 iuu_cardin = 0; 1072 iuu_cardout = TIOCM_CD; 1073 break; 1074 case 3: 1075 iuu_cardin = TIOCM_DSR; 1076 iuu_cardout = 0; 1077 break; 1078 case 4: 1079 iuu_cardin = 0; 1080 iuu_cardout = TIOCM_DSR; 1081 break; 1082 case 5: 1083 iuu_cardin = TIOCM_CTS; 1084 iuu_cardout = 0; 1085 break; 1086 case 6: 1087 iuu_cardin = 0; 1088 iuu_cardout = TIOCM_CTS; 1089 break; 1090 case 7: 1091 iuu_cardin = TIOCM_RNG; 1092 iuu_cardout = 0; 1093 break; 1094 case 8: 1095 iuu_cardin = 0; 1096 iuu_cardout = TIOCM_RNG; 1097 } 1098 1099 iuu_uart_flush(port); 1100 1101 dev_dbg(dev, "%s - initialization done\n", __func__); 1102 1103 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1104 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1105 usb_sndbulkpipe(port->serial->dev, 1106 port->bulk_out_endpointAddress), 1107 port->write_urb->transfer_buffer, 1, 1108 read_rxcmd_callback, port); 1109 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1110 if (result) { 1111 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1112 iuu_close(port); 1113 } else { 1114 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1115 } 1116 1117 return result; 1118 } 1119 1120 /* how to change VCC */ 1121 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1122 { 1123 int status; 1124 u8 *buf; 1125 1126 buf = kmalloc(5, GFP_KERNEL); 1127 if (!buf) 1128 return -ENOMEM; 1129 1130 buf[0] = IUU_SET_VCC; 1131 buf[1] = vcc & 0xFF; 1132 buf[2] = (vcc >> 8) & 0xFF; 1133 buf[3] = (vcc >> 16) & 0xFF; 1134 buf[4] = (vcc >> 24) & 0xFF; 1135 1136 status = bulk_immediate(port, buf, 5); 1137 kfree(buf); 1138 1139 if (status != IUU_OPERATION_OK) 1140 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1141 else 1142 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1143 1144 return status; 1145 } 1146 1147 /* 1148 * Sysfs Attributes 1149 */ 1150 1151 static ssize_t show_vcc_mode(struct device *dev, 1152 struct device_attribute *attr, char *buf) 1153 { 1154 struct usb_serial_port *port = to_usb_serial_port(dev); 1155 struct iuu_private *priv = usb_get_serial_port_data(port); 1156 1157 return sprintf(buf, "%d\n", priv->vcc); 1158 } 1159 1160 static ssize_t store_vcc_mode(struct device *dev, 1161 struct device_attribute *attr, const char *buf, size_t count) 1162 { 1163 struct usb_serial_port *port = to_usb_serial_port(dev); 1164 struct iuu_private *priv = usb_get_serial_port_data(port); 1165 unsigned long v; 1166 1167 if (strict_strtoul(buf, 10, &v)) { 1168 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1169 __func__, buf); 1170 goto fail_store_vcc_mode; 1171 } 1172 1173 dev_dbg(dev, "%s: setting vcc_mode = %ld", __func__, v); 1174 1175 if ((v != 3) && (v != 5)) { 1176 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1177 } else { 1178 iuu_vcc_set(port, v); 1179 priv->vcc = v; 1180 } 1181 fail_store_vcc_mode: 1182 return count; 1183 } 1184 1185 static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode, 1186 store_vcc_mode); 1187 1188 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1189 { 1190 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1191 } 1192 1193 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1194 { 1195 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1196 return 0; 1197 } 1198 1199 /* 1200 * End Sysfs Attributes 1201 */ 1202 1203 static struct usb_serial_driver iuu_device = { 1204 .driver = { 1205 .owner = THIS_MODULE, 1206 .name = "iuu_phoenix", 1207 }, 1208 .id_table = id_table, 1209 .num_ports = 1, 1210 .bulk_in_size = 512, 1211 .bulk_out_size = 512, 1212 .open = iuu_open, 1213 .close = iuu_close, 1214 .write = iuu_uart_write, 1215 .read_bulk_callback = iuu_uart_read_callback, 1216 .tiocmget = iuu_tiocmget, 1217 .tiocmset = iuu_tiocmset, 1218 .set_termios = iuu_set_termios, 1219 .init_termios = iuu_init_termios, 1220 .port_probe = iuu_port_probe, 1221 .port_remove = iuu_port_remove, 1222 }; 1223 1224 static struct usb_serial_driver * const serial_drivers[] = { 1225 &iuu_device, NULL 1226 }; 1227 1228 module_usb_serial_driver(serial_drivers, id_table); 1229 1230 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1231 1232 MODULE_DESCRIPTION(DRIVER_DESC); 1233 MODULE_LICENSE("GPL"); 1234 1235 MODULE_VERSION(DRIVER_VERSION); 1236 1237 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1238 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1239 1240 module_param(boost, int, S_IRUGO | S_IWUSR); 1241 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1242 1243 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1244 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1245 "3=6 Mhz)"); 1246 1247 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1248 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1249 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1250 1251 module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1252 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1253 "for 5V). Default to 5."); 1254