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 36static const struct usb_device_id id_table[] = { 37 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 38 {} /* Terminating entry */ 39}; 40MODULE_DEVICE_TABLE(usb, id_table); 41 42/* turbo parameter */ 43static int boost = 100; 44static int clockmode = 1; 45static int cdmode = 1; 46static int iuu_cardin; 47static int iuu_cardout; 48static bool xmas; 49static int vcc_default = 5; 50 51static int iuu_create_sysfs_attrs(struct usb_serial_port *port); 52static int iuu_remove_sysfs_attrs(struct usb_serial_port *port); 53static void read_rxcmd_callback(struct urb *urb); 54 55struct 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 71static 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 109static 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 121static 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 */ 150static 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 164static 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 186static 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 */ 217static 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 247static 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 262static 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 277static 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 298static 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 318static 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 344static 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 357static 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 == 1) { 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 378static 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 == 1) { 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 400static 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 539static 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 577static 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 if (data == NULL) 592 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); 593 if (urb->actual_length && data) { 594 tty_insert_flip_string(&port->port, data, urb->actual_length); 595 tty_flip_buffer_push(&port->port); 596 } 597 iuu_led_activity_on(urb); 598} 599 600static int iuu_bulk_write(struct usb_serial_port *port) 601{ 602 struct iuu_private *priv = usb_get_serial_port_data(port); 603 unsigned long flags; 604 int result; 605 int buf_len; 606 char *buf_ptr = port->write_urb->transfer_buffer; 607 608 spin_lock_irqsave(&priv->lock, flags); 609 *buf_ptr++ = IUU_UART_ESC; 610 *buf_ptr++ = IUU_UART_TX; 611 *buf_ptr++ = priv->writelen; 612 613 memcpy(buf_ptr, priv->writebuf, priv->writelen); 614 buf_len = priv->writelen; 615 priv->writelen = 0; 616 spin_unlock_irqrestore(&priv->lock, flags); 617 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__, 618 buf_len, buf_len, buf_ptr); 619 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 620 usb_sndbulkpipe(port->serial->dev, 621 port->bulk_out_endpointAddress), 622 port->write_urb->transfer_buffer, buf_len + 3, 623 iuu_rxcmd, port); 624 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 625 usb_serial_port_softint(port); 626 return result; 627} 628 629static int iuu_read_buf(struct usb_serial_port *port, int len) 630{ 631 int result; 632 633 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 634 usb_rcvbulkpipe(port->serial->dev, 635 port->bulk_in_endpointAddress), 636 port->read_urb->transfer_buffer, len, 637 read_buf_callback, port); 638 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 639 return result; 640} 641 642static void iuu_uart_read_callback(struct urb *urb) 643{ 644 struct usb_serial_port *port = urb->context; 645 struct iuu_private *priv = usb_get_serial_port_data(port); 646 unsigned long flags; 647 int status = urb->status; 648 int error = 0; 649 int len = 0; 650 unsigned char *data = urb->transfer_buffer; 651 priv->poll++; 652 653 if (status) { 654 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 655 /* error stop all */ 656 return; 657 } 658 if (data == NULL) 659 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); 660 661 if (urb->actual_length == 1 && data != NULL) 662 len = (int) data[0]; 663 664 if (urb->actual_length > 1) { 665 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 666 urb->actual_length); 667 error = 1; 668 return; 669 } 670 /* if len > 0 call readbuf */ 671 672 if (len > 0 && error == 0) { 673 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 674 __func__, len); 675 status = iuu_read_buf(port, len); 676 return; 677 } 678 /* need to update status ? */ 679 if (priv->poll > 99) { 680 status = iuu_status(port); 681 priv->poll = 0; 682 return; 683 } 684 685 /* reset waiting ? */ 686 687 if (priv->reset == 1) { 688 status = iuu_reset(port, 0xC); 689 return; 690 } 691 /* Writebuf is waiting */ 692 spin_lock_irqsave(&priv->lock, flags); 693 if (priv->writelen > 0) { 694 spin_unlock_irqrestore(&priv->lock, flags); 695 status = iuu_bulk_write(port); 696 return; 697 } 698 spin_unlock_irqrestore(&priv->lock, flags); 699 /* if nothing to write call again rxcmd */ 700 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 701 iuu_led_activity_off(urb); 702} 703 704static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 705 const u8 *buf, int count) 706{ 707 struct iuu_private *priv = usb_get_serial_port_data(port); 708 unsigned long flags; 709 710 if (count > 256) 711 return -ENOMEM; 712 713 spin_lock_irqsave(&priv->lock, flags); 714 715 /* fill the buffer */ 716 memcpy(priv->writebuf + priv->writelen, buf, count); 717 priv->writelen += count; 718 spin_unlock_irqrestore(&priv->lock, flags); 719 720 return count; 721} 722 723static void read_rxcmd_callback(struct urb *urb) 724{ 725 struct usb_serial_port *port = urb->context; 726 int result; 727 int status = urb->status; 728 729 if (status) { 730 /* error stop all */ 731 return; 732 } 733 734 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 735 usb_rcvbulkpipe(port->serial->dev, 736 port->bulk_in_endpointAddress), 737 port->read_urb->transfer_buffer, 256, 738 iuu_uart_read_callback, port); 739 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 740 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result); 741} 742 743static int iuu_uart_on(struct usb_serial_port *port) 744{ 745 int status; 746 u8 *buf; 747 748 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL); 749 750 if (!buf) 751 return -ENOMEM; 752 753 buf[0] = IUU_UART_ENABLE; 754 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 755 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 756 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 757 758 status = bulk_immediate(port, buf, 4); 759 if (status != IUU_OPERATION_OK) { 760 dev_dbg(&port->dev, "%s - uart_on error\n", __func__); 761 goto uart_enable_failed; 762 } 763 /* iuu_reset() the card after iuu_uart_on() */ 764 status = iuu_uart_flush(port); 765 if (status != IUU_OPERATION_OK) 766 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__); 767uart_enable_failed: 768 kfree(buf); 769 return status; 770} 771 772/* Disables the IUU UART (a.k.a. the Phoenix voiderface) */ 773static int iuu_uart_off(struct usb_serial_port *port) 774{ 775 int status; 776 u8 *buf; 777 buf = kmalloc(1, GFP_KERNEL); 778 if (!buf) 779 return -ENOMEM; 780 buf[0] = IUU_UART_DISABLE; 781 782 status = bulk_immediate(port, buf, 1); 783 if (status != IUU_OPERATION_OK) 784 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 785 786 kfree(buf); 787 return status; 788} 789 790static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 791 u32 *actual, u8 parity) 792{ 793 int status; 794 u32 baud; 795 u8 *dataout; 796 u8 DataCount = 0; 797 u8 T1Frekvens = 0; 798 u8 T1reload = 0; 799 unsigned int T1FrekvensHZ = 0; 800 801 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); 802 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL); 803 804 if (!dataout) 805 return -ENOMEM; 806 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 807 baud = baud_base; 808 809 if (baud < 1200 || baud > 230400) { 810 kfree(dataout); 811 return IUU_INVALID_PARAMETER; 812 } 813 if (baud > 977) { 814 T1Frekvens = 3; 815 T1FrekvensHZ = 500000; 816 } 817 818 if (baud > 3906) { 819 T1Frekvens = 2; 820 T1FrekvensHZ = 2000000; 821 } 822 823 if (baud > 11718) { 824 T1Frekvens = 1; 825 T1FrekvensHZ = 6000000; 826 } 827 828 if (baud > 46875) { 829 T1Frekvens = 0; 830 T1FrekvensHZ = 24000000; 831 } 832 833 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 834 835 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 836 dataout[DataCount++] = IUU_UART_ESC; 837 /* magic number here: CHANGE_BAUD; */ 838 dataout[DataCount++] = IUU_UART_CHANGE; 839 dataout[DataCount++] = T1Frekvens; 840 dataout[DataCount++] = T1reload; 841 842 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 843 844 switch (parity & 0x0F) { 845 case IUU_PARITY_NONE: 846 dataout[DataCount++] = 0x00; 847 break; 848 case IUU_PARITY_EVEN: 849 dataout[DataCount++] = 0x01; 850 break; 851 case IUU_PARITY_ODD: 852 dataout[DataCount++] = 0x02; 853 break; 854 case IUU_PARITY_MARK: 855 dataout[DataCount++] = 0x03; 856 break; 857 case IUU_PARITY_SPACE: 858 dataout[DataCount++] = 0x04; 859 break; 860 default: 861 kfree(dataout); 862 return IUU_INVALID_PARAMETER; 863 break; 864 } 865 866 switch (parity & 0xF0) { 867 case IUU_ONE_STOP_BIT: 868 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 869 break; 870 871 case IUU_TWO_STOP_BITS: 872 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 873 break; 874 default: 875 kfree(dataout); 876 return IUU_INVALID_PARAMETER; 877 break; 878 } 879 880 status = bulk_immediate(port, dataout, DataCount); 881 if (status != IUU_OPERATION_OK) 882 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 883 kfree(dataout); 884 return status; 885} 886 887static void iuu_set_termios(struct tty_struct *tty, 888 struct usb_serial_port *port, struct ktermios *old_termios) 889{ 890 const u32 supported_mask = CMSPAR|PARENB|PARODD; 891 struct iuu_private *priv = usb_get_serial_port_data(port); 892 unsigned int cflag = tty->termios.c_cflag; 893 int status; 894 u32 actual; 895 u32 parity; 896 int csize = CS7; 897 int baud; 898 u32 newval = cflag & supported_mask; 899 900 /* Just use the ospeed. ispeed should be the same. */ 901 baud = tty->termios.c_ospeed; 902 903 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud); 904 905 /* compute the parity parameter */ 906 parity = 0; 907 if (cflag & CMSPAR) { /* Using mark space */ 908 if (cflag & PARODD) 909 parity |= IUU_PARITY_SPACE; 910 else 911 parity |= IUU_PARITY_MARK; 912 } else if (!(cflag & PARENB)) { 913 parity |= IUU_PARITY_NONE; 914 csize = CS8; 915 } else if (cflag & PARODD) 916 parity |= IUU_PARITY_ODD; 917 else 918 parity |= IUU_PARITY_EVEN; 919 920 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 921 922 /* set it */ 923 status = iuu_uart_baud(port, 924 baud * priv->boost / 100, 925 &actual, parity); 926 927 /* set the termios value to the real one, so the user now what has 928 * changed. We support few fields so its easies to copy the old hw 929 * settings back over and then adjust them 930 */ 931 if (old_termios) 932 tty_termios_copy_hw(&tty->termios, old_termios); 933 if (status != 0) /* Set failed - return old bits */ 934 return; 935 /* Re-encode speed, parity and csize */ 936 tty_encode_baud_rate(tty, baud, baud); 937 tty->termios.c_cflag &= ~(supported_mask|CSIZE); 938 tty->termios.c_cflag |= newval | csize; 939} 940 941static void iuu_close(struct usb_serial_port *port) 942{ 943 /* iuu_led (port,255,0,0,0); */ 944 945 iuu_uart_off(port); 946 947 usb_kill_urb(port->write_urb); 948 usb_kill_urb(port->read_urb); 949 950 iuu_led(port, 0, 0, 0xF000, 0xFF); 951} 952 953static void iuu_init_termios(struct tty_struct *tty) 954{ 955 tty->termios = tty_std_termios; 956 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600 957 | TIOCM_CTS | CSTOPB | PARENB; 958 tty->termios.c_ispeed = 9600; 959 tty->termios.c_ospeed = 9600; 960 tty->termios.c_lflag = 0; 961 tty->termios.c_oflag = 0; 962 tty->termios.c_iflag = 0; 963} 964 965static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 966{ 967 struct usb_serial *serial = port->serial; 968 struct device *dev = &port->dev; 969 u8 *buf; 970 int result; 971 int baud; 972 u32 actual; 973 struct iuu_private *priv = usb_get_serial_port_data(port); 974 975 baud = tty->termios.c_ospeed; 976 tty->termios.c_ispeed = baud; 977 /* Re-encode speed */ 978 tty_encode_baud_rate(tty, baud, baud); 979 980 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 981 usb_clear_halt(serial->dev, port->write_urb->pipe); 982 usb_clear_halt(serial->dev, port->read_urb->pipe); 983 984 buf = kmalloc(10, GFP_KERNEL); 985 if (buf == NULL) 986 return -ENOMEM; 987 988 priv->poll = 0; 989 990 /* initialize writebuf */ 991#define FISH(a, b, c, d) do { \ 992 result = usb_control_msg(port->serial->dev, \ 993 usb_rcvctrlpipe(port->serial->dev, 0), \ 994 b, a, c, d, buf, 1, 1000); \ 995 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", a, b, c, d, result, \ 996 buf[0]); } while (0); 997 998#define SOUP(a, b, c, d) do { \ 999 result = usb_control_msg(port->serial->dev, \ 1000 usb_sndctrlpipe(port->serial->dev, 0), \ 1001 b, a, c, d, NULL, 0, 1000); \ 1002 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 1003 1004 /* This is not UART related but IUU USB driver related or something */ 1005 /* like that. Basically no IUU will accept any commands from the USB */ 1006 /* host unless it has received the following message */ 1007 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1008 1009 SOUP(0x03, 0x02, 0x02, 0x0); 1010 kfree(buf); 1011 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1012 iuu_uart_on(port); 1013 if (boost < 100) 1014 boost = 100; 1015 priv->boost = boost; 1016 priv->baud = baud; 1017 switch (clockmode) { 1018 case 2: /* 3.680 Mhz */ 1019 priv->clk = IUU_CLK_3680000; 1020 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1021 result = 1022 iuu_uart_baud(port, baud * boost / 100, &actual, 1023 IUU_PARITY_EVEN); 1024 break; 1025 case 3: /* 6.00 Mhz */ 1026 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1027 priv->clk = IUU_CLK_6000000; 1028 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1029 result = 1030 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1031 IUU_PARITY_EVEN); 1032 break; 1033 default: /* 3.579 Mhz */ 1034 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1035 priv->clk = IUU_CLK_3579000; 1036 result = 1037 iuu_uart_baud(port, baud * boost / 100, &actual, 1038 IUU_PARITY_EVEN); 1039 } 1040 1041 /* set the cardin cardout signals */ 1042 switch (cdmode) { 1043 case 0: 1044 iuu_cardin = 0; 1045 iuu_cardout = 0; 1046 break; 1047 case 1: 1048 iuu_cardin = TIOCM_CD; 1049 iuu_cardout = 0; 1050 break; 1051 case 2: 1052 iuu_cardin = 0; 1053 iuu_cardout = TIOCM_CD; 1054 break; 1055 case 3: 1056 iuu_cardin = TIOCM_DSR; 1057 iuu_cardout = 0; 1058 break; 1059 case 4: 1060 iuu_cardin = 0; 1061 iuu_cardout = TIOCM_DSR; 1062 break; 1063 case 5: 1064 iuu_cardin = TIOCM_CTS; 1065 iuu_cardout = 0; 1066 break; 1067 case 6: 1068 iuu_cardin = 0; 1069 iuu_cardout = TIOCM_CTS; 1070 break; 1071 case 7: 1072 iuu_cardin = TIOCM_RNG; 1073 iuu_cardout = 0; 1074 break; 1075 case 8: 1076 iuu_cardin = 0; 1077 iuu_cardout = TIOCM_RNG; 1078 } 1079 1080 iuu_uart_flush(port); 1081 1082 dev_dbg(dev, "%s - initialization done\n", __func__); 1083 1084 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1085 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1086 usb_sndbulkpipe(port->serial->dev, 1087 port->bulk_out_endpointAddress), 1088 port->write_urb->transfer_buffer, 1, 1089 read_rxcmd_callback, port); 1090 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1091 if (result) { 1092 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1093 iuu_close(port); 1094 } else { 1095 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1096 } 1097 1098 return result; 1099} 1100 1101/* how to change VCC */ 1102static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1103{ 1104 int status; 1105 u8 *buf; 1106 1107 buf = kmalloc(5, GFP_KERNEL); 1108 if (!buf) 1109 return -ENOMEM; 1110 1111 buf[0] = IUU_SET_VCC; 1112 buf[1] = vcc & 0xFF; 1113 buf[2] = (vcc >> 8) & 0xFF; 1114 buf[3] = (vcc >> 16) & 0xFF; 1115 buf[4] = (vcc >> 24) & 0xFF; 1116 1117 status = bulk_immediate(port, buf, 5); 1118 kfree(buf); 1119 1120 if (status != IUU_OPERATION_OK) 1121 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1122 else 1123 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1124 1125 return status; 1126} 1127 1128/* 1129 * Sysfs Attributes 1130 */ 1131 1132static ssize_t vcc_mode_show(struct device *dev, 1133 struct device_attribute *attr, char *buf) 1134{ 1135 struct usb_serial_port *port = to_usb_serial_port(dev); 1136 struct iuu_private *priv = usb_get_serial_port_data(port); 1137 1138 return sprintf(buf, "%d\n", priv->vcc); 1139} 1140 1141static ssize_t vcc_mode_store(struct device *dev, 1142 struct device_attribute *attr, const char *buf, size_t count) 1143{ 1144 struct usb_serial_port *port = to_usb_serial_port(dev); 1145 struct iuu_private *priv = usb_get_serial_port_data(port); 1146 unsigned long v; 1147 1148 if (kstrtoul(buf, 10, &v)) { 1149 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1150 __func__, buf); 1151 goto fail_store_vcc_mode; 1152 } 1153 1154 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1155 1156 if ((v != 3) && (v != 5)) { 1157 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1158 } else { 1159 iuu_vcc_set(port, v); 1160 priv->vcc = v; 1161 } 1162fail_store_vcc_mode: 1163 return count; 1164} 1165static DEVICE_ATTR_RW(vcc_mode); 1166 1167static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1168{ 1169 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1170} 1171 1172static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1173{ 1174 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1175 return 0; 1176} 1177 1178/* 1179 * End Sysfs Attributes 1180 */ 1181 1182static struct usb_serial_driver iuu_device = { 1183 .driver = { 1184 .owner = THIS_MODULE, 1185 .name = "iuu_phoenix", 1186 }, 1187 .id_table = id_table, 1188 .num_ports = 1, 1189 .bulk_in_size = 512, 1190 .bulk_out_size = 512, 1191 .open = iuu_open, 1192 .close = iuu_close, 1193 .write = iuu_uart_write, 1194 .read_bulk_callback = iuu_uart_read_callback, 1195 .tiocmget = iuu_tiocmget, 1196 .tiocmset = iuu_tiocmset, 1197 .set_termios = iuu_set_termios, 1198 .init_termios = iuu_init_termios, 1199 .port_probe = iuu_port_probe, 1200 .port_remove = iuu_port_remove, 1201}; 1202 1203static struct usb_serial_driver * const serial_drivers[] = { 1204 &iuu_device, NULL 1205}; 1206 1207module_usb_serial_driver(serial_drivers, id_table); 1208 1209MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1210 1211MODULE_DESCRIPTION(DRIVER_DESC); 1212MODULE_LICENSE("GPL"); 1213 1214module_param(xmas, bool, S_IRUGO | S_IWUSR); 1215MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1216 1217module_param(boost, int, S_IRUGO | S_IWUSR); 1218MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1219 1220module_param(clockmode, int, S_IRUGO | S_IWUSR); 1221MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1222 "3=6 Mhz)"); 1223 1224module_param(cdmode, int, S_IRUGO | S_IWUSR); 1225MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1226 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1227 1228module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1229MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1230 "for 5V). Default to 5."); 1231