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