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