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_attach(struct usb_serial *serial) 72 { 73 unsigned char num_ports = serial->num_ports; 74 75 if (serial->num_bulk_in < num_ports || serial->num_bulk_out < num_ports) 76 return -ENODEV; 77 78 return 0; 79 } 80 81 static int iuu_port_probe(struct usb_serial_port *port) 82 { 83 struct iuu_private *priv; 84 int ret; 85 86 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL); 87 if (!priv) 88 return -ENOMEM; 89 90 priv->buf = kzalloc(256, GFP_KERNEL); 91 if (!priv->buf) { 92 kfree(priv); 93 return -ENOMEM; 94 } 95 96 priv->writebuf = kzalloc(256, GFP_KERNEL); 97 if (!priv->writebuf) { 98 kfree(priv->buf); 99 kfree(priv); 100 return -ENOMEM; 101 } 102 103 priv->vcc = vcc_default; 104 spin_lock_init(&priv->lock); 105 106 usb_set_serial_port_data(port, priv); 107 108 ret = iuu_create_sysfs_attrs(port); 109 if (ret) { 110 kfree(priv->writebuf); 111 kfree(priv->buf); 112 kfree(priv); 113 return ret; 114 } 115 116 return 0; 117 } 118 119 static int iuu_port_remove(struct usb_serial_port *port) 120 { 121 struct iuu_private *priv = usb_get_serial_port_data(port); 122 123 iuu_remove_sysfs_attrs(port); 124 kfree(priv->writebuf); 125 kfree(priv->buf); 126 kfree(priv); 127 128 return 0; 129 } 130 131 static int iuu_tiocmset(struct tty_struct *tty, 132 unsigned int set, unsigned int clear) 133 { 134 struct usb_serial_port *port = tty->driver_data; 135 struct iuu_private *priv = usb_get_serial_port_data(port); 136 unsigned long flags; 137 138 /* FIXME: locking on tiomstatus */ 139 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n", 140 __func__, set, clear); 141 142 spin_lock_irqsave(&priv->lock, flags); 143 144 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) { 145 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__); 146 priv->reset = 1; 147 } 148 if (set & TIOCM_RTS) 149 priv->tiostatus = TIOCM_RTS; 150 151 spin_unlock_irqrestore(&priv->lock, flags); 152 return 0; 153 } 154 155 /* This is used to provide a carrier detect mechanism 156 * When a card is present, the response is 0x00 157 * When no card , the reader respond with TIOCM_CD 158 * This is known as CD autodetect mechanism 159 */ 160 static int iuu_tiocmget(struct tty_struct *tty) 161 { 162 struct usb_serial_port *port = tty->driver_data; 163 struct iuu_private *priv = usb_get_serial_port_data(port); 164 unsigned long flags; 165 int rc; 166 167 spin_lock_irqsave(&priv->lock, flags); 168 rc = priv->tiostatus; 169 spin_unlock_irqrestore(&priv->lock, flags); 170 171 return rc; 172 } 173 174 static void iuu_rxcmd(struct urb *urb) 175 { 176 struct usb_serial_port *port = urb->context; 177 int result; 178 int status = urb->status; 179 180 if (status) { 181 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 182 /* error stop all */ 183 return; 184 } 185 186 187 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 188 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 189 usb_sndbulkpipe(port->serial->dev, 190 port->bulk_out_endpointAddress), 191 port->write_urb->transfer_buffer, 1, 192 read_rxcmd_callback, port); 193 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 194 } 195 196 static int iuu_reset(struct usb_serial_port *port, u8 wt) 197 { 198 struct iuu_private *priv = usb_get_serial_port_data(port); 199 int result; 200 char *buf_ptr = port->write_urb->transfer_buffer; 201 202 /* Prepare the reset sequence */ 203 204 *buf_ptr++ = IUU_RST_SET; 205 *buf_ptr++ = IUU_DELAY_MS; 206 *buf_ptr++ = wt; 207 *buf_ptr = IUU_RST_CLEAR; 208 209 /* send the sequence */ 210 211 usb_fill_bulk_urb(port->write_urb, 212 port->serial->dev, 213 usb_sndbulkpipe(port->serial->dev, 214 port->bulk_out_endpointAddress), 215 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 216 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 217 priv->reset = 0; 218 return result; 219 } 220 221 /* Status Function 222 * Return value is 223 * 0x00 = no card 224 * 0x01 = smartcard 225 * 0x02 = sim card 226 */ 227 static void iuu_update_status_callback(struct urb *urb) 228 { 229 struct usb_serial_port *port = urb->context; 230 struct iuu_private *priv = usb_get_serial_port_data(port); 231 u8 *st; 232 int status = urb->status; 233 234 if (status) { 235 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 236 /* error stop all */ 237 return; 238 } 239 240 st = urb->transfer_buffer; 241 dev_dbg(&port->dev, "%s - enter\n", __func__); 242 if (urb->actual_length == 1) { 243 switch (st[0]) { 244 case 0x1: 245 priv->tiostatus = iuu_cardout; 246 break; 247 case 0x0: 248 priv->tiostatus = iuu_cardin; 249 break; 250 default: 251 priv->tiostatus = iuu_cardin; 252 } 253 } 254 iuu_rxcmd(urb); 255 } 256 257 static void iuu_status_callback(struct urb *urb) 258 { 259 struct usb_serial_port *port = urb->context; 260 int result; 261 int status = urb->status; 262 263 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 264 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 265 usb_rcvbulkpipe(port->serial->dev, 266 port->bulk_in_endpointAddress), 267 port->read_urb->transfer_buffer, 256, 268 iuu_update_status_callback, port); 269 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 270 } 271 272 static int iuu_status(struct usb_serial_port *port) 273 { 274 int result; 275 276 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 277 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 278 usb_sndbulkpipe(port->serial->dev, 279 port->bulk_out_endpointAddress), 280 port->write_urb->transfer_buffer, 1, 281 iuu_status_callback, port); 282 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 283 return result; 284 285 } 286 287 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 288 { 289 int status; 290 struct usb_serial *serial = port->serial; 291 int actual = 0; 292 293 /* send the data out the bulk port */ 294 295 status = 296 usb_bulk_msg(serial->dev, 297 usb_sndbulkpipe(serial->dev, 298 port->bulk_out_endpointAddress), buf, 299 count, &actual, 1000); 300 301 if (status != IUU_OPERATION_OK) 302 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 303 else 304 dev_dbg(&port->dev, "%s - write OK !\n", __func__); 305 return status; 306 } 307 308 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 309 { 310 int status; 311 struct usb_serial *serial = port->serial; 312 int actual = 0; 313 314 /* send the data out the bulk port */ 315 status = 316 usb_bulk_msg(serial->dev, 317 usb_rcvbulkpipe(serial->dev, 318 port->bulk_in_endpointAddress), buf, 319 count, &actual, 1000); 320 321 if (status != IUU_OPERATION_OK) 322 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 323 else 324 dev_dbg(&port->dev, "%s - read OK !\n", __func__); 325 return status; 326 } 327 328 static int iuu_led(struct usb_serial_port *port, unsigned int R, 329 unsigned int G, unsigned int B, u8 f) 330 { 331 int status; 332 u8 *buf; 333 buf = kmalloc(8, GFP_KERNEL); 334 if (!buf) 335 return -ENOMEM; 336 337 buf[0] = IUU_SET_LED; 338 buf[1] = R & 0xFF; 339 buf[2] = (R >> 8) & 0xFF; 340 buf[3] = G & 0xFF; 341 buf[4] = (G >> 8) & 0xFF; 342 buf[5] = B & 0xFF; 343 buf[6] = (B >> 8) & 0xFF; 344 buf[7] = f; 345 status = bulk_immediate(port, buf, 8); 346 kfree(buf); 347 if (status != IUU_OPERATION_OK) 348 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status); 349 else 350 dev_dbg(&port->dev, "%s - led OK !\n", __func__); 351 return IUU_OPERATION_OK; 352 } 353 354 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 355 u8 b2, u8 freq) 356 { 357 *buf++ = IUU_SET_LED; 358 *buf++ = r1; 359 *buf++ = r2; 360 *buf++ = g1; 361 *buf++ = g2; 362 *buf++ = b1; 363 *buf++ = b2; 364 *buf = freq; 365 } 366 367 static void iuu_led_activity_on(struct urb *urb) 368 { 369 struct usb_serial_port *port = urb->context; 370 int result; 371 char *buf_ptr = port->write_urb->transfer_buffer; 372 *buf_ptr++ = IUU_SET_LED; 373 if (xmas) { 374 get_random_bytes(buf_ptr, 6); 375 *(buf_ptr+7) = 1; 376 } else { 377 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 378 } 379 380 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 381 usb_sndbulkpipe(port->serial->dev, 382 port->bulk_out_endpointAddress), 383 port->write_urb->transfer_buffer, 8 , 384 iuu_rxcmd, port); 385 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 386 } 387 388 static void iuu_led_activity_off(struct urb *urb) 389 { 390 struct usb_serial_port *port = urb->context; 391 int result; 392 char *buf_ptr = port->write_urb->transfer_buffer; 393 if (xmas) { 394 iuu_rxcmd(urb); 395 return; 396 } else { 397 *buf_ptr++ = IUU_SET_LED; 398 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 399 } 400 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 401 usb_sndbulkpipe(port->serial->dev, 402 port->bulk_out_endpointAddress), 403 port->write_urb->transfer_buffer, 8 , 404 iuu_rxcmd, port); 405 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 406 } 407 408 409 410 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 411 { 412 int status; 413 struct iuu_private *priv = usb_get_serial_port_data(port); 414 int Count = 0; 415 u8 FrqGenAdr = 0x69; 416 u8 DIV = 0; /* 8bit */ 417 u8 XDRV = 0; /* 8bit */ 418 u8 PUMP = 0; /* 3bit */ 419 u8 PBmsb = 0; /* 2bit */ 420 u8 PBlsb = 0; /* 8bit */ 421 u8 PO = 0; /* 1bit */ 422 u8 Q = 0; /* 7bit */ 423 /* 24bit = 3bytes */ 424 unsigned int P = 0; 425 unsigned int P2 = 0; 426 int frq = (int)dwFrq; 427 428 if (frq == 0) { 429 priv->buf[Count++] = IUU_UART_WRITE_I2C; 430 priv->buf[Count++] = FrqGenAdr << 1; 431 priv->buf[Count++] = 0x09; 432 priv->buf[Count++] = 0x00; 433 434 status = bulk_immediate(port, (u8 *) priv->buf, Count); 435 if (status != 0) { 436 dev_dbg(&port->dev, "%s - write error\n", __func__); 437 return status; 438 } 439 } else if (frq == 3579000) { 440 DIV = 100; 441 P = 1193; 442 Q = 40; 443 XDRV = 0; 444 } else if (frq == 3680000) { 445 DIV = 105; 446 P = 161; 447 Q = 5; 448 XDRV = 0; 449 } else if (frq == 6000000) { 450 DIV = 66; 451 P = 66; 452 Q = 2; 453 XDRV = 0x28; 454 } else { 455 unsigned int result = 0; 456 unsigned int tmp = 0; 457 unsigned int check; 458 unsigned int check2; 459 char found = 0x00; 460 unsigned int lQ = 2; 461 unsigned int lP = 2055; 462 unsigned int lDiv = 4; 463 464 for (lQ = 2; lQ <= 47 && !found; lQ++) 465 for (lP = 2055; lP >= 8 && !found; lP--) 466 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 467 tmp = (12000000 / lDiv) * (lP / lQ); 468 if (abs((int)(tmp - frq)) < 469 abs((int)(frq - result))) { 470 check2 = (12000000 / lQ); 471 if (check2 < 250000) 472 continue; 473 check = (12000000 / lQ) * lP; 474 if (check > 400000000) 475 continue; 476 if (check < 100000000) 477 continue; 478 if (lDiv < 4 || lDiv > 127) 479 continue; 480 result = tmp; 481 P = lP; 482 DIV = lDiv; 483 Q = lQ; 484 if (result == frq) 485 found = 0x01; 486 } 487 } 488 } 489 P2 = ((P - PO) / 2) - 4; 490 DIV = DIV; 491 PUMP = 0x04; 492 PBmsb = (P2 >> 8 & 0x03); 493 PBlsb = P2 & 0xFF; 494 PO = (P >> 10) & 0x01; 495 Q = Q - 2; 496 497 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 498 priv->buf[Count++] = FrqGenAdr << 1; 499 priv->buf[Count++] = 0x09; 500 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 501 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 502 priv->buf[Count++] = FrqGenAdr << 1; 503 priv->buf[Count++] = 0x0C; 504 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 505 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 506 priv->buf[Count++] = FrqGenAdr << 1; 507 priv->buf[Count++] = 0x12; 508 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 509 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 510 priv->buf[Count++] = FrqGenAdr << 1; 511 priv->buf[Count++] = 0x13; 512 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 513 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 514 priv->buf[Count++] = FrqGenAdr << 1; 515 priv->buf[Count++] = 0x40; 516 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 517 (PBmsb & 0x03); /* Adr = 0x40 */ 518 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 519 priv->buf[Count++] = FrqGenAdr << 1; 520 priv->buf[Count++] = 0x41; 521 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 522 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 523 priv->buf[Count++] = FrqGenAdr << 1; 524 priv->buf[Count++] = 0x42; 525 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 526 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 527 priv->buf[Count++] = FrqGenAdr << 1; 528 priv->buf[Count++] = 0x44; 529 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 530 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 531 priv->buf[Count++] = FrqGenAdr << 1; 532 priv->buf[Count++] = 0x45; 533 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 534 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 535 priv->buf[Count++] = FrqGenAdr << 1; 536 priv->buf[Count++] = 0x46; 537 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 538 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 539 priv->buf[Count++] = FrqGenAdr << 1; 540 priv->buf[Count++] = 0x47; 541 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 542 543 status = bulk_immediate(port, (u8 *) priv->buf, Count); 544 if (status != IUU_OPERATION_OK) 545 dev_dbg(&port->dev, "%s - write error\n", __func__); 546 return status; 547 } 548 549 static int iuu_uart_flush(struct usb_serial_port *port) 550 { 551 struct device *dev = &port->dev; 552 int i; 553 int status; 554 u8 rxcmd = IUU_UART_RX; 555 struct iuu_private *priv = usb_get_serial_port_data(port); 556 557 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 558 return -EIO; 559 560 for (i = 0; i < 2; i++) { 561 status = bulk_immediate(port, &rxcmd, 1); 562 if (status != IUU_OPERATION_OK) { 563 dev_dbg(dev, "%s - uart_flush_write error\n", __func__); 564 return status; 565 } 566 567 status = read_immediate(port, &priv->len, 1); 568 if (status != IUU_OPERATION_OK) { 569 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 570 return status; 571 } 572 573 if (priv->len > 0) { 574 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len); 575 status = read_immediate(port, priv->buf, priv->len); 576 if (status != IUU_OPERATION_OK) { 577 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 578 return status; 579 } 580 } 581 } 582 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__); 583 iuu_led(port, 0, 0xF000, 0, 0xFF); 584 return status; 585 } 586 587 static void read_buf_callback(struct urb *urb) 588 { 589 struct usb_serial_port *port = urb->context; 590 unsigned char *data = urb->transfer_buffer; 591 int status = urb->status; 592 593 if (status) { 594 if (status == -EPROTO) { 595 /* reschedule needed */ 596 } 597 return; 598 } 599 600 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); 601 if (data == NULL) 602 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); 603 if (urb->actual_length && data) { 604 tty_insert_flip_string(&port->port, data, urb->actual_length); 605 tty_flip_buffer_push(&port->port); 606 } 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 /* Disables 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); */ 954 955 iuu_uart_off(port); 956 957 usb_kill_urb(port->write_urb); 958 usb_kill_urb(port->read_urb); 959 960 iuu_led(port, 0, 0, 0xF000, 0xFF); 961 } 962 963 static void iuu_init_termios(struct tty_struct *tty) 964 { 965 tty->termios = tty_std_termios; 966 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600 967 | TIOCM_CTS | CSTOPB | PARENB; 968 tty->termios.c_ispeed = 9600; 969 tty->termios.c_ospeed = 9600; 970 tty->termios.c_lflag = 0; 971 tty->termios.c_oflag = 0; 972 tty->termios.c_iflag = 0; 973 } 974 975 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 976 { 977 struct usb_serial *serial = port->serial; 978 struct device *dev = &port->dev; 979 int result; 980 int baud; 981 u32 actual; 982 struct iuu_private *priv = usb_get_serial_port_data(port); 983 984 baud = tty->termios.c_ospeed; 985 tty->termios.c_ispeed = baud; 986 /* Re-encode speed */ 987 tty_encode_baud_rate(tty, baud, baud); 988 989 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 990 usb_clear_halt(serial->dev, port->write_urb->pipe); 991 usb_clear_halt(serial->dev, port->read_urb->pipe); 992 993 priv->poll = 0; 994 995 #define SOUP(a, b, c, d) do { \ 996 result = usb_control_msg(port->serial->dev, \ 997 usb_sndctrlpipe(port->serial->dev, 0), \ 998 b, a, c, d, NULL, 0, 1000); \ 999 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 1000 1001 /* This is not UART related but IUU USB driver related or something */ 1002 /* like that. Basically no IUU will accept any commands from the USB */ 1003 /* host unless it has received the following message */ 1004 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1005 1006 SOUP(0x03, 0x02, 0x02, 0x0); 1007 1008 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1009 iuu_uart_on(port); 1010 if (boost < 100) 1011 boost = 100; 1012 priv->boost = boost; 1013 priv->baud = baud; 1014 switch (clockmode) { 1015 case 2: /* 3.680 Mhz */ 1016 priv->clk = IUU_CLK_3680000; 1017 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1018 result = 1019 iuu_uart_baud(port, baud * boost / 100, &actual, 1020 IUU_PARITY_EVEN); 1021 break; 1022 case 3: /* 6.00 Mhz */ 1023 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1024 priv->clk = IUU_CLK_6000000; 1025 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1026 result = 1027 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1028 IUU_PARITY_EVEN); 1029 break; 1030 default: /* 3.579 Mhz */ 1031 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1032 priv->clk = IUU_CLK_3579000; 1033 result = 1034 iuu_uart_baud(port, baud * boost / 100, &actual, 1035 IUU_PARITY_EVEN); 1036 } 1037 1038 /* set the cardin cardout signals */ 1039 switch (cdmode) { 1040 case 0: 1041 iuu_cardin = 0; 1042 iuu_cardout = 0; 1043 break; 1044 case 1: 1045 iuu_cardin = TIOCM_CD; 1046 iuu_cardout = 0; 1047 break; 1048 case 2: 1049 iuu_cardin = 0; 1050 iuu_cardout = TIOCM_CD; 1051 break; 1052 case 3: 1053 iuu_cardin = TIOCM_DSR; 1054 iuu_cardout = 0; 1055 break; 1056 case 4: 1057 iuu_cardin = 0; 1058 iuu_cardout = TIOCM_DSR; 1059 break; 1060 case 5: 1061 iuu_cardin = TIOCM_CTS; 1062 iuu_cardout = 0; 1063 break; 1064 case 6: 1065 iuu_cardin = 0; 1066 iuu_cardout = TIOCM_CTS; 1067 break; 1068 case 7: 1069 iuu_cardin = TIOCM_RNG; 1070 iuu_cardout = 0; 1071 break; 1072 case 8: 1073 iuu_cardin = 0; 1074 iuu_cardout = TIOCM_RNG; 1075 } 1076 1077 iuu_uart_flush(port); 1078 1079 dev_dbg(dev, "%s - initialization done\n", __func__); 1080 1081 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1082 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1083 usb_sndbulkpipe(port->serial->dev, 1084 port->bulk_out_endpointAddress), 1085 port->write_urb->transfer_buffer, 1, 1086 read_rxcmd_callback, port); 1087 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1088 if (result) { 1089 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1090 iuu_close(port); 1091 } else { 1092 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1093 } 1094 1095 return result; 1096 } 1097 1098 /* how to change VCC */ 1099 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1100 { 1101 int status; 1102 u8 *buf; 1103 1104 buf = kmalloc(5, GFP_KERNEL); 1105 if (!buf) 1106 return -ENOMEM; 1107 1108 buf[0] = IUU_SET_VCC; 1109 buf[1] = vcc & 0xFF; 1110 buf[2] = (vcc >> 8) & 0xFF; 1111 buf[3] = (vcc >> 16) & 0xFF; 1112 buf[4] = (vcc >> 24) & 0xFF; 1113 1114 status = bulk_immediate(port, buf, 5); 1115 kfree(buf); 1116 1117 if (status != IUU_OPERATION_OK) 1118 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1119 else 1120 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1121 1122 return status; 1123 } 1124 1125 /* 1126 * Sysfs Attributes 1127 */ 1128 1129 static ssize_t vcc_mode_show(struct device *dev, 1130 struct device_attribute *attr, char *buf) 1131 { 1132 struct usb_serial_port *port = to_usb_serial_port(dev); 1133 struct iuu_private *priv = usb_get_serial_port_data(port); 1134 1135 return sprintf(buf, "%d\n", priv->vcc); 1136 } 1137 1138 static ssize_t vcc_mode_store(struct device *dev, 1139 struct device_attribute *attr, const char *buf, size_t count) 1140 { 1141 struct usb_serial_port *port = to_usb_serial_port(dev); 1142 struct iuu_private *priv = usb_get_serial_port_data(port); 1143 unsigned long v; 1144 1145 if (kstrtoul(buf, 10, &v)) { 1146 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1147 __func__, buf); 1148 goto fail_store_vcc_mode; 1149 } 1150 1151 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1152 1153 if ((v != 3) && (v != 5)) { 1154 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1155 } else { 1156 iuu_vcc_set(port, v); 1157 priv->vcc = v; 1158 } 1159 fail_store_vcc_mode: 1160 return count; 1161 } 1162 static DEVICE_ATTR_RW(vcc_mode); 1163 1164 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1165 { 1166 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1167 } 1168 1169 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1170 { 1171 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1172 return 0; 1173 } 1174 1175 /* 1176 * End Sysfs Attributes 1177 */ 1178 1179 static struct usb_serial_driver iuu_device = { 1180 .driver = { 1181 .owner = THIS_MODULE, 1182 .name = "iuu_phoenix", 1183 }, 1184 .id_table = id_table, 1185 .num_ports = 1, 1186 .bulk_in_size = 512, 1187 .bulk_out_size = 512, 1188 .open = iuu_open, 1189 .close = iuu_close, 1190 .write = iuu_uart_write, 1191 .read_bulk_callback = iuu_uart_read_callback, 1192 .tiocmget = iuu_tiocmget, 1193 .tiocmset = iuu_tiocmset, 1194 .set_termios = iuu_set_termios, 1195 .init_termios = iuu_init_termios, 1196 .attach = iuu_attach, 1197 .port_probe = iuu_port_probe, 1198 .port_remove = iuu_port_remove, 1199 }; 1200 1201 static struct usb_serial_driver * const serial_drivers[] = { 1202 &iuu_device, NULL 1203 }; 1204 1205 module_usb_serial_driver(serial_drivers, id_table); 1206 1207 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1208 1209 MODULE_DESCRIPTION(DRIVER_DESC); 1210 MODULE_LICENSE("GPL"); 1211 1212 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1213 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1214 1215 module_param(boost, int, S_IRUGO | S_IWUSR); 1216 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1217 1218 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1219 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1220 "3=6 Mhz)"); 1221 1222 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1223 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1224 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1225 1226 module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1227 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1228 "for 5V). Default to 5."); 1229