1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Infinity Unlimited USB Phoenix driver 4 * 5 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk) 6 7 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com) 8 * 9 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás) 10 * 11 * And tested with help of WB Electronics 12 */ 13 #include <linux/kernel.h> 14 #include <linux/errno.h> 15 #include <linux/slab.h> 16 #include <linux/tty.h> 17 #include <linux/tty_driver.h> 18 #include <linux/tty_flip.h> 19 #include <linux/serial.h> 20 #include <linux/module.h> 21 #include <linux/moduleparam.h> 22 #include <linux/spinlock.h> 23 #include <linux/uaccess.h> 24 #include <linux/usb.h> 25 #include <linux/usb/serial.h> 26 #include "iuu_phoenix.h" 27 #include <linux/random.h> 28 29 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver" 30 31 static const struct usb_device_id id_table[] = { 32 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 33 {} /* Terminating entry */ 34 }; 35 MODULE_DEVICE_TABLE(usb, id_table); 36 37 /* turbo parameter */ 38 static int boost = 100; 39 static int clockmode = 1; 40 static int cdmode = 1; 41 static int iuu_cardin; 42 static int iuu_cardout; 43 static bool xmas; 44 static int vcc_default = 5; 45 46 static int iuu_create_sysfs_attrs(struct usb_serial_port *port); 47 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port); 48 static void read_rxcmd_callback(struct urb *urb); 49 50 struct iuu_private { 51 spinlock_t lock; /* store irq state */ 52 u8 line_status; 53 int tiostatus; /* store IUART SIGNAL for tiocmget call */ 54 u8 reset; /* if 1 reset is needed */ 55 int poll; /* number of poll */ 56 u8 *writebuf; /* buffer for writing to device */ 57 int writelen; /* num of byte to write to device */ 58 u8 *buf; /* used for initialize speed */ 59 u8 len; 60 int vcc; /* vcc (either 3 or 5 V) */ 61 u32 baud; 62 u32 boost; 63 u32 clk; 64 }; 65 66 static int iuu_port_probe(struct usb_serial_port *port) 67 { 68 struct iuu_private *priv; 69 int ret; 70 71 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL); 72 if (!priv) 73 return -ENOMEM; 74 75 priv->buf = kzalloc(256, GFP_KERNEL); 76 if (!priv->buf) { 77 kfree(priv); 78 return -ENOMEM; 79 } 80 81 priv->writebuf = kzalloc(256, GFP_KERNEL); 82 if (!priv->writebuf) { 83 kfree(priv->buf); 84 kfree(priv); 85 return -ENOMEM; 86 } 87 88 priv->vcc = vcc_default; 89 spin_lock_init(&priv->lock); 90 91 usb_set_serial_port_data(port, priv); 92 93 ret = iuu_create_sysfs_attrs(port); 94 if (ret) { 95 kfree(priv->writebuf); 96 kfree(priv->buf); 97 kfree(priv); 98 return ret; 99 } 100 101 return 0; 102 } 103 104 static int iuu_port_remove(struct usb_serial_port *port) 105 { 106 struct iuu_private *priv = usb_get_serial_port_data(port); 107 108 iuu_remove_sysfs_attrs(port); 109 kfree(priv->writebuf); 110 kfree(priv->buf); 111 kfree(priv); 112 113 return 0; 114 } 115 116 static int iuu_tiocmset(struct tty_struct *tty, 117 unsigned int set, unsigned int clear) 118 { 119 struct usb_serial_port *port = tty->driver_data; 120 struct iuu_private *priv = usb_get_serial_port_data(port); 121 unsigned long flags; 122 123 /* FIXME: locking on tiomstatus */ 124 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n", 125 __func__, set, clear); 126 127 spin_lock_irqsave(&priv->lock, flags); 128 129 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) { 130 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__); 131 priv->reset = 1; 132 } 133 if (set & TIOCM_RTS) 134 priv->tiostatus = TIOCM_RTS; 135 136 spin_unlock_irqrestore(&priv->lock, flags); 137 return 0; 138 } 139 140 /* This is used to provide a carrier detect mechanism 141 * When a card is present, the response is 0x00 142 * When no card , the reader respond with TIOCM_CD 143 * This is known as CD autodetect mechanism 144 */ 145 static int iuu_tiocmget(struct tty_struct *tty) 146 { 147 struct usb_serial_port *port = tty->driver_data; 148 struct iuu_private *priv = usb_get_serial_port_data(port); 149 unsigned long flags; 150 int rc; 151 152 spin_lock_irqsave(&priv->lock, flags); 153 rc = priv->tiostatus; 154 spin_unlock_irqrestore(&priv->lock, flags); 155 156 return rc; 157 } 158 159 static void iuu_rxcmd(struct urb *urb) 160 { 161 struct usb_serial_port *port = urb->context; 162 int result; 163 int status = urb->status; 164 165 if (status) { 166 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 167 /* error stop all */ 168 return; 169 } 170 171 172 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 173 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 174 usb_sndbulkpipe(port->serial->dev, 175 port->bulk_out_endpointAddress), 176 port->write_urb->transfer_buffer, 1, 177 read_rxcmd_callback, port); 178 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 179 } 180 181 static int iuu_reset(struct usb_serial_port *port, u8 wt) 182 { 183 struct iuu_private *priv = usb_get_serial_port_data(port); 184 int result; 185 char *buf_ptr = port->write_urb->transfer_buffer; 186 187 /* Prepare the reset sequence */ 188 189 *buf_ptr++ = IUU_RST_SET; 190 *buf_ptr++ = IUU_DELAY_MS; 191 *buf_ptr++ = wt; 192 *buf_ptr = IUU_RST_CLEAR; 193 194 /* send the sequence */ 195 196 usb_fill_bulk_urb(port->write_urb, 197 port->serial->dev, 198 usb_sndbulkpipe(port->serial->dev, 199 port->bulk_out_endpointAddress), 200 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 201 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 202 priv->reset = 0; 203 return result; 204 } 205 206 /* Status Function 207 * Return value is 208 * 0x00 = no card 209 * 0x01 = smartcard 210 * 0x02 = sim card 211 */ 212 static void iuu_update_status_callback(struct urb *urb) 213 { 214 struct usb_serial_port *port = urb->context; 215 struct iuu_private *priv = usb_get_serial_port_data(port); 216 u8 *st; 217 int status = urb->status; 218 219 if (status) { 220 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 221 /* error stop all */ 222 return; 223 } 224 225 st = urb->transfer_buffer; 226 dev_dbg(&port->dev, "%s - enter\n", __func__); 227 if (urb->actual_length == 1) { 228 switch (st[0]) { 229 case 0x1: 230 priv->tiostatus = iuu_cardout; 231 break; 232 case 0x0: 233 priv->tiostatus = iuu_cardin; 234 break; 235 default: 236 priv->tiostatus = iuu_cardin; 237 } 238 } 239 iuu_rxcmd(urb); 240 } 241 242 static void iuu_status_callback(struct urb *urb) 243 { 244 struct usb_serial_port *port = urb->context; 245 int result; 246 int status = urb->status; 247 248 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 249 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 250 usb_rcvbulkpipe(port->serial->dev, 251 port->bulk_in_endpointAddress), 252 port->read_urb->transfer_buffer, 256, 253 iuu_update_status_callback, port); 254 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 255 } 256 257 static int iuu_status(struct usb_serial_port *port) 258 { 259 int result; 260 261 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 262 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 263 usb_sndbulkpipe(port->serial->dev, 264 port->bulk_out_endpointAddress), 265 port->write_urb->transfer_buffer, 1, 266 iuu_status_callback, port); 267 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 268 return result; 269 270 } 271 272 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 273 { 274 int status; 275 struct usb_serial *serial = port->serial; 276 int actual = 0; 277 278 /* send the data out the bulk port */ 279 280 status = 281 usb_bulk_msg(serial->dev, 282 usb_sndbulkpipe(serial->dev, 283 port->bulk_out_endpointAddress), buf, 284 count, &actual, 1000); 285 286 if (status != IUU_OPERATION_OK) 287 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 288 else 289 dev_dbg(&port->dev, "%s - write OK !\n", __func__); 290 return status; 291 } 292 293 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 294 { 295 int status; 296 struct usb_serial *serial = port->serial; 297 int actual = 0; 298 299 /* send the data out the bulk port */ 300 status = 301 usb_bulk_msg(serial->dev, 302 usb_rcvbulkpipe(serial->dev, 303 port->bulk_in_endpointAddress), buf, 304 count, &actual, 1000); 305 306 if (status != IUU_OPERATION_OK) 307 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 308 else 309 dev_dbg(&port->dev, "%s - read OK !\n", __func__); 310 return status; 311 } 312 313 static int iuu_led(struct usb_serial_port *port, unsigned int R, 314 unsigned int G, unsigned int B, u8 f) 315 { 316 int status; 317 u8 *buf; 318 buf = kmalloc(8, GFP_KERNEL); 319 if (!buf) 320 return -ENOMEM; 321 322 buf[0] = IUU_SET_LED; 323 buf[1] = R & 0xFF; 324 buf[2] = (R >> 8) & 0xFF; 325 buf[3] = G & 0xFF; 326 buf[4] = (G >> 8) & 0xFF; 327 buf[5] = B & 0xFF; 328 buf[6] = (B >> 8) & 0xFF; 329 buf[7] = f; 330 status = bulk_immediate(port, buf, 8); 331 kfree(buf); 332 if (status != IUU_OPERATION_OK) 333 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status); 334 else 335 dev_dbg(&port->dev, "%s - led OK !\n", __func__); 336 return IUU_OPERATION_OK; 337 } 338 339 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 340 u8 b2, u8 freq) 341 { 342 *buf++ = IUU_SET_LED; 343 *buf++ = r1; 344 *buf++ = r2; 345 *buf++ = g1; 346 *buf++ = g2; 347 *buf++ = b1; 348 *buf++ = b2; 349 *buf = freq; 350 } 351 352 static void iuu_led_activity_on(struct urb *urb) 353 { 354 struct usb_serial_port *port = urb->context; 355 int result; 356 char *buf_ptr = port->write_urb->transfer_buffer; 357 *buf_ptr++ = IUU_SET_LED; 358 if (xmas) { 359 get_random_bytes(buf_ptr, 6); 360 *(buf_ptr+7) = 1; 361 } else { 362 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 363 } 364 365 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 366 usb_sndbulkpipe(port->serial->dev, 367 port->bulk_out_endpointAddress), 368 port->write_urb->transfer_buffer, 8 , 369 iuu_rxcmd, port); 370 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 371 } 372 373 static void iuu_led_activity_off(struct urb *urb) 374 { 375 struct usb_serial_port *port = urb->context; 376 int result; 377 char *buf_ptr = port->write_urb->transfer_buffer; 378 if (xmas) { 379 iuu_rxcmd(urb); 380 return; 381 } else { 382 *buf_ptr++ = IUU_SET_LED; 383 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 384 } 385 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 386 usb_sndbulkpipe(port->serial->dev, 387 port->bulk_out_endpointAddress), 388 port->write_urb->transfer_buffer, 8 , 389 iuu_rxcmd, port); 390 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 391 } 392 393 394 395 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 396 { 397 int status; 398 struct iuu_private *priv = usb_get_serial_port_data(port); 399 int Count = 0; 400 u8 FrqGenAdr = 0x69; 401 u8 DIV = 0; /* 8bit */ 402 u8 XDRV = 0; /* 8bit */ 403 u8 PUMP = 0; /* 3bit */ 404 u8 PBmsb = 0; /* 2bit */ 405 u8 PBlsb = 0; /* 8bit */ 406 u8 PO = 0; /* 1bit */ 407 u8 Q = 0; /* 7bit */ 408 /* 24bit = 3bytes */ 409 unsigned int P = 0; 410 unsigned int P2 = 0; 411 int frq = (int)dwFrq; 412 413 if (frq == 0) { 414 priv->buf[Count++] = IUU_UART_WRITE_I2C; 415 priv->buf[Count++] = FrqGenAdr << 1; 416 priv->buf[Count++] = 0x09; 417 priv->buf[Count++] = 0x00; 418 419 status = bulk_immediate(port, (u8 *) priv->buf, Count); 420 if (status != 0) { 421 dev_dbg(&port->dev, "%s - write error\n", __func__); 422 return status; 423 } 424 } else if (frq == 3579000) { 425 DIV = 100; 426 P = 1193; 427 Q = 40; 428 XDRV = 0; 429 } else if (frq == 3680000) { 430 DIV = 105; 431 P = 161; 432 Q = 5; 433 XDRV = 0; 434 } else if (frq == 6000000) { 435 DIV = 66; 436 P = 66; 437 Q = 2; 438 XDRV = 0x28; 439 } else { 440 unsigned int result = 0; 441 unsigned int tmp = 0; 442 unsigned int check; 443 unsigned int check2; 444 char found = 0x00; 445 unsigned int lQ = 2; 446 unsigned int lP = 2055; 447 unsigned int lDiv = 4; 448 449 for (lQ = 2; lQ <= 47 && !found; lQ++) 450 for (lP = 2055; lP >= 8 && !found; lP--) 451 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 452 tmp = (12000000 / lDiv) * (lP / lQ); 453 if (abs((int)(tmp - frq)) < 454 abs((int)(frq - result))) { 455 check2 = (12000000 / lQ); 456 if (check2 < 250000) 457 continue; 458 check = (12000000 / lQ) * lP; 459 if (check > 400000000) 460 continue; 461 if (check < 100000000) 462 continue; 463 if (lDiv < 4 || lDiv > 127) 464 continue; 465 result = tmp; 466 P = lP; 467 DIV = lDiv; 468 Q = lQ; 469 if (result == frq) 470 found = 0x01; 471 } 472 } 473 } 474 P2 = ((P - PO) / 2) - 4; 475 PUMP = 0x04; 476 PBmsb = (P2 >> 8 & 0x03); 477 PBlsb = P2 & 0xFF; 478 PO = (P >> 10) & 0x01; 479 Q = Q - 2; 480 481 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 482 priv->buf[Count++] = FrqGenAdr << 1; 483 priv->buf[Count++] = 0x09; 484 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 485 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 486 priv->buf[Count++] = FrqGenAdr << 1; 487 priv->buf[Count++] = 0x0C; 488 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 489 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 490 priv->buf[Count++] = FrqGenAdr << 1; 491 priv->buf[Count++] = 0x12; 492 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 493 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 494 priv->buf[Count++] = FrqGenAdr << 1; 495 priv->buf[Count++] = 0x13; 496 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 497 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 498 priv->buf[Count++] = FrqGenAdr << 1; 499 priv->buf[Count++] = 0x40; 500 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 501 (PBmsb & 0x03); /* Adr = 0x40 */ 502 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 503 priv->buf[Count++] = FrqGenAdr << 1; 504 priv->buf[Count++] = 0x41; 505 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 506 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 507 priv->buf[Count++] = FrqGenAdr << 1; 508 priv->buf[Count++] = 0x42; 509 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 510 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 511 priv->buf[Count++] = FrqGenAdr << 1; 512 priv->buf[Count++] = 0x44; 513 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 514 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 515 priv->buf[Count++] = FrqGenAdr << 1; 516 priv->buf[Count++] = 0x45; 517 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 518 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 519 priv->buf[Count++] = FrqGenAdr << 1; 520 priv->buf[Count++] = 0x46; 521 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 522 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 523 priv->buf[Count++] = FrqGenAdr << 1; 524 priv->buf[Count++] = 0x47; 525 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 526 527 status = bulk_immediate(port, (u8 *) priv->buf, Count); 528 if (status != IUU_OPERATION_OK) 529 dev_dbg(&port->dev, "%s - write error\n", __func__); 530 return status; 531 } 532 533 static int iuu_uart_flush(struct usb_serial_port *port) 534 { 535 struct device *dev = &port->dev; 536 int i; 537 int status; 538 u8 rxcmd = IUU_UART_RX; 539 struct iuu_private *priv = usb_get_serial_port_data(port); 540 541 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 542 return -EIO; 543 544 for (i = 0; i < 2; i++) { 545 status = bulk_immediate(port, &rxcmd, 1); 546 if (status != IUU_OPERATION_OK) { 547 dev_dbg(dev, "%s - uart_flush_write error\n", __func__); 548 return status; 549 } 550 551 status = read_immediate(port, &priv->len, 1); 552 if (status != IUU_OPERATION_OK) { 553 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 554 return status; 555 } 556 557 if (priv->len > 0) { 558 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len); 559 status = read_immediate(port, priv->buf, priv->len); 560 if (status != IUU_OPERATION_OK) { 561 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 562 return status; 563 } 564 } 565 } 566 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__); 567 iuu_led(port, 0, 0xF000, 0, 0xFF); 568 return status; 569 } 570 571 static void read_buf_callback(struct urb *urb) 572 { 573 struct usb_serial_port *port = urb->context; 574 unsigned char *data = urb->transfer_buffer; 575 int status = urb->status; 576 577 if (status) { 578 if (status == -EPROTO) { 579 /* reschedule needed */ 580 } 581 return; 582 } 583 584 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); 585 586 if (urb->actual_length) { 587 tty_insert_flip_string(&port->port, data, urb->actual_length); 588 tty_flip_buffer_push(&port->port); 589 } 590 iuu_led_activity_on(urb); 591 } 592 593 static int iuu_bulk_write(struct usb_serial_port *port) 594 { 595 struct iuu_private *priv = usb_get_serial_port_data(port); 596 unsigned long flags; 597 int result; 598 int buf_len; 599 char *buf_ptr = port->write_urb->transfer_buffer; 600 601 spin_lock_irqsave(&priv->lock, flags); 602 *buf_ptr++ = IUU_UART_ESC; 603 *buf_ptr++ = IUU_UART_TX; 604 *buf_ptr++ = priv->writelen; 605 606 memcpy(buf_ptr, priv->writebuf, priv->writelen); 607 buf_len = priv->writelen; 608 priv->writelen = 0; 609 spin_unlock_irqrestore(&priv->lock, flags); 610 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__, 611 buf_len, buf_len, buf_ptr); 612 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 613 usb_sndbulkpipe(port->serial->dev, 614 port->bulk_out_endpointAddress), 615 port->write_urb->transfer_buffer, buf_len + 3, 616 iuu_rxcmd, port); 617 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 618 usb_serial_port_softint(port); 619 return result; 620 } 621 622 static int iuu_read_buf(struct usb_serial_port *port, int len) 623 { 624 int result; 625 626 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 627 usb_rcvbulkpipe(port->serial->dev, 628 port->bulk_in_endpointAddress), 629 port->read_urb->transfer_buffer, len, 630 read_buf_callback, port); 631 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 632 return result; 633 } 634 635 static void iuu_uart_read_callback(struct urb *urb) 636 { 637 struct usb_serial_port *port = urb->context; 638 struct iuu_private *priv = usb_get_serial_port_data(port); 639 unsigned long flags; 640 int status = urb->status; 641 int error = 0; 642 int len = 0; 643 unsigned char *data = urb->transfer_buffer; 644 priv->poll++; 645 646 if (status) { 647 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 648 /* error stop all */ 649 return; 650 } 651 652 if (urb->actual_length == 1) 653 len = (int) data[0]; 654 655 if (urb->actual_length > 1) { 656 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 657 urb->actual_length); 658 error = 1; 659 return; 660 } 661 /* if len > 0 call readbuf */ 662 663 if (len > 0 && error == 0) { 664 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 665 __func__, len); 666 status = iuu_read_buf(port, len); 667 return; 668 } 669 /* need to update status ? */ 670 if (priv->poll > 99) { 671 status = iuu_status(port); 672 priv->poll = 0; 673 return; 674 } 675 676 /* reset waiting ? */ 677 678 if (priv->reset == 1) { 679 status = iuu_reset(port, 0xC); 680 return; 681 } 682 /* Writebuf is waiting */ 683 spin_lock_irqsave(&priv->lock, flags); 684 if (priv->writelen > 0) { 685 spin_unlock_irqrestore(&priv->lock, flags); 686 status = iuu_bulk_write(port); 687 return; 688 } 689 spin_unlock_irqrestore(&priv->lock, flags); 690 /* if nothing to write call again rxcmd */ 691 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 692 iuu_led_activity_off(urb); 693 } 694 695 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 696 const u8 *buf, int count) 697 { 698 struct iuu_private *priv = usb_get_serial_port_data(port); 699 unsigned long flags; 700 701 if (count > 256) 702 return -ENOMEM; 703 704 spin_lock_irqsave(&priv->lock, flags); 705 706 /* fill the buffer */ 707 memcpy(priv->writebuf + priv->writelen, buf, count); 708 priv->writelen += count; 709 spin_unlock_irqrestore(&priv->lock, flags); 710 711 return count; 712 } 713 714 static void read_rxcmd_callback(struct urb *urb) 715 { 716 struct usb_serial_port *port = urb->context; 717 int result; 718 int status = urb->status; 719 720 if (status) { 721 /* error stop all */ 722 return; 723 } 724 725 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 726 usb_rcvbulkpipe(port->serial->dev, 727 port->bulk_in_endpointAddress), 728 port->read_urb->transfer_buffer, 256, 729 iuu_uart_read_callback, port); 730 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 731 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result); 732 } 733 734 static int iuu_uart_on(struct usb_serial_port *port) 735 { 736 int status; 737 u8 *buf; 738 739 buf = kmalloc(4, GFP_KERNEL); 740 741 if (!buf) 742 return -ENOMEM; 743 744 buf[0] = IUU_UART_ENABLE; 745 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 746 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 747 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 748 749 status = bulk_immediate(port, buf, 4); 750 if (status != IUU_OPERATION_OK) { 751 dev_dbg(&port->dev, "%s - uart_on error\n", __func__); 752 goto uart_enable_failed; 753 } 754 /* iuu_reset() the card after iuu_uart_on() */ 755 status = iuu_uart_flush(port); 756 if (status != IUU_OPERATION_OK) 757 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__); 758 uart_enable_failed: 759 kfree(buf); 760 return status; 761 } 762 763 /* Disables the IUU UART (a.k.a. the Phoenix voiderface) */ 764 static int iuu_uart_off(struct usb_serial_port *port) 765 { 766 int status; 767 u8 *buf; 768 buf = kmalloc(1, GFP_KERNEL); 769 if (!buf) 770 return -ENOMEM; 771 buf[0] = IUU_UART_DISABLE; 772 773 status = bulk_immediate(port, buf, 1); 774 if (status != IUU_OPERATION_OK) 775 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 776 777 kfree(buf); 778 return status; 779 } 780 781 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 782 u32 *actual, u8 parity) 783 { 784 int status; 785 u32 baud; 786 u8 *dataout; 787 u8 DataCount = 0; 788 u8 T1Frekvens = 0; 789 u8 T1reload = 0; 790 unsigned int T1FrekvensHZ = 0; 791 792 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); 793 dataout = kmalloc(5, GFP_KERNEL); 794 795 if (!dataout) 796 return -ENOMEM; 797 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 798 baud = baud_base; 799 800 if (baud < 1200 || baud > 230400) { 801 kfree(dataout); 802 return IUU_INVALID_PARAMETER; 803 } 804 if (baud > 977) { 805 T1Frekvens = 3; 806 T1FrekvensHZ = 500000; 807 } 808 809 if (baud > 3906) { 810 T1Frekvens = 2; 811 T1FrekvensHZ = 2000000; 812 } 813 814 if (baud > 11718) { 815 T1Frekvens = 1; 816 T1FrekvensHZ = 6000000; 817 } 818 819 if (baud > 46875) { 820 T1Frekvens = 0; 821 T1FrekvensHZ = 24000000; 822 } 823 824 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 825 826 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 827 dataout[DataCount++] = IUU_UART_ESC; 828 /* magic number here: CHANGE_BAUD; */ 829 dataout[DataCount++] = IUU_UART_CHANGE; 830 dataout[DataCount++] = T1Frekvens; 831 dataout[DataCount++] = T1reload; 832 833 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 834 835 switch (parity & 0x0F) { 836 case IUU_PARITY_NONE: 837 dataout[DataCount++] = 0x00; 838 break; 839 case IUU_PARITY_EVEN: 840 dataout[DataCount++] = 0x01; 841 break; 842 case IUU_PARITY_ODD: 843 dataout[DataCount++] = 0x02; 844 break; 845 case IUU_PARITY_MARK: 846 dataout[DataCount++] = 0x03; 847 break; 848 case IUU_PARITY_SPACE: 849 dataout[DataCount++] = 0x04; 850 break; 851 default: 852 kfree(dataout); 853 return IUU_INVALID_PARAMETER; 854 break; 855 } 856 857 switch (parity & 0xF0) { 858 case IUU_ONE_STOP_BIT: 859 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 860 break; 861 862 case IUU_TWO_STOP_BITS: 863 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 864 break; 865 default: 866 kfree(dataout); 867 return IUU_INVALID_PARAMETER; 868 break; 869 } 870 871 status = bulk_immediate(port, dataout, DataCount); 872 if (status != IUU_OPERATION_OK) 873 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 874 kfree(dataout); 875 return status; 876 } 877 878 static void iuu_set_termios(struct tty_struct *tty, 879 struct usb_serial_port *port, struct ktermios *old_termios) 880 { 881 const u32 supported_mask = CMSPAR|PARENB|PARODD; 882 struct iuu_private *priv = usb_get_serial_port_data(port); 883 unsigned int cflag = tty->termios.c_cflag; 884 int status; 885 u32 actual; 886 u32 parity; 887 int csize = CS7; 888 int baud; 889 u32 newval = cflag & supported_mask; 890 891 /* Just use the ospeed. ispeed should be the same. */ 892 baud = tty->termios.c_ospeed; 893 894 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud); 895 896 /* compute the parity parameter */ 897 parity = 0; 898 if (cflag & CMSPAR) { /* Using mark space */ 899 if (cflag & PARODD) 900 parity |= IUU_PARITY_SPACE; 901 else 902 parity |= IUU_PARITY_MARK; 903 } else if (!(cflag & PARENB)) { 904 parity |= IUU_PARITY_NONE; 905 csize = CS8; 906 } else if (cflag & PARODD) 907 parity |= IUU_PARITY_ODD; 908 else 909 parity |= IUU_PARITY_EVEN; 910 911 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 912 913 /* set it */ 914 status = iuu_uart_baud(port, 915 baud * priv->boost / 100, 916 &actual, parity); 917 918 /* set the termios value to the real one, so the user now what has 919 * changed. We support few fields so its easies to copy the old hw 920 * settings back over and then adjust them 921 */ 922 if (old_termios) 923 tty_termios_copy_hw(&tty->termios, old_termios); 924 if (status != 0) /* Set failed - return old bits */ 925 return; 926 /* Re-encode speed, parity and csize */ 927 tty_encode_baud_rate(tty, baud, baud); 928 tty->termios.c_cflag &= ~(supported_mask|CSIZE); 929 tty->termios.c_cflag |= newval | csize; 930 } 931 932 static void iuu_close(struct usb_serial_port *port) 933 { 934 /* iuu_led (port,255,0,0,0); */ 935 936 iuu_uart_off(port); 937 938 usb_kill_urb(port->write_urb); 939 usb_kill_urb(port->read_urb); 940 941 iuu_led(port, 0, 0, 0xF000, 0xFF); 942 } 943 944 static void iuu_init_termios(struct tty_struct *tty) 945 { 946 tty->termios = tty_std_termios; 947 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600 948 | TIOCM_CTS | CSTOPB | PARENB; 949 tty->termios.c_ispeed = 9600; 950 tty->termios.c_ospeed = 9600; 951 tty->termios.c_lflag = 0; 952 tty->termios.c_oflag = 0; 953 tty->termios.c_iflag = 0; 954 } 955 956 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 957 { 958 struct usb_serial *serial = port->serial; 959 struct device *dev = &port->dev; 960 int result; 961 int baud; 962 u32 actual; 963 struct iuu_private *priv = usb_get_serial_port_data(port); 964 965 baud = tty->termios.c_ospeed; 966 tty->termios.c_ispeed = baud; 967 /* Re-encode speed */ 968 tty_encode_baud_rate(tty, baud, baud); 969 970 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 971 usb_clear_halt(serial->dev, port->write_urb->pipe); 972 usb_clear_halt(serial->dev, port->read_urb->pipe); 973 974 priv->poll = 0; 975 976 #define SOUP(a, b, c, d) do { \ 977 result = usb_control_msg(port->serial->dev, \ 978 usb_sndctrlpipe(port->serial->dev, 0), \ 979 b, a, c, d, NULL, 0, 1000); \ 980 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 981 982 /* This is not UART related but IUU USB driver related or something */ 983 /* like that. Basically no IUU will accept any commands from the USB */ 984 /* host unless it has received the following message */ 985 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 986 987 SOUP(0x03, 0x02, 0x02, 0x0); 988 989 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 990 iuu_uart_on(port); 991 if (boost < 100) 992 boost = 100; 993 priv->boost = boost; 994 priv->baud = baud; 995 switch (clockmode) { 996 case 2: /* 3.680 Mhz */ 997 priv->clk = IUU_CLK_3680000; 998 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 999 result = 1000 iuu_uart_baud(port, baud * boost / 100, &actual, 1001 IUU_PARITY_EVEN); 1002 break; 1003 case 3: /* 6.00 Mhz */ 1004 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1005 priv->clk = IUU_CLK_6000000; 1006 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1007 result = 1008 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1009 IUU_PARITY_EVEN); 1010 break; 1011 default: /* 3.579 Mhz */ 1012 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1013 priv->clk = IUU_CLK_3579000; 1014 result = 1015 iuu_uart_baud(port, baud * boost / 100, &actual, 1016 IUU_PARITY_EVEN); 1017 } 1018 1019 /* set the cardin cardout signals */ 1020 switch (cdmode) { 1021 case 0: 1022 iuu_cardin = 0; 1023 iuu_cardout = 0; 1024 break; 1025 case 1: 1026 iuu_cardin = TIOCM_CD; 1027 iuu_cardout = 0; 1028 break; 1029 case 2: 1030 iuu_cardin = 0; 1031 iuu_cardout = TIOCM_CD; 1032 break; 1033 case 3: 1034 iuu_cardin = TIOCM_DSR; 1035 iuu_cardout = 0; 1036 break; 1037 case 4: 1038 iuu_cardin = 0; 1039 iuu_cardout = TIOCM_DSR; 1040 break; 1041 case 5: 1042 iuu_cardin = TIOCM_CTS; 1043 iuu_cardout = 0; 1044 break; 1045 case 6: 1046 iuu_cardin = 0; 1047 iuu_cardout = TIOCM_CTS; 1048 break; 1049 case 7: 1050 iuu_cardin = TIOCM_RNG; 1051 iuu_cardout = 0; 1052 break; 1053 case 8: 1054 iuu_cardin = 0; 1055 iuu_cardout = TIOCM_RNG; 1056 } 1057 1058 iuu_uart_flush(port); 1059 1060 dev_dbg(dev, "%s - initialization done\n", __func__); 1061 1062 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1063 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1064 usb_sndbulkpipe(port->serial->dev, 1065 port->bulk_out_endpointAddress), 1066 port->write_urb->transfer_buffer, 1, 1067 read_rxcmd_callback, port); 1068 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1069 if (result) { 1070 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1071 iuu_close(port); 1072 } else { 1073 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1074 } 1075 1076 return result; 1077 } 1078 1079 /* how to change VCC */ 1080 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1081 { 1082 int status; 1083 u8 *buf; 1084 1085 buf = kmalloc(5, GFP_KERNEL); 1086 if (!buf) 1087 return -ENOMEM; 1088 1089 buf[0] = IUU_SET_VCC; 1090 buf[1] = vcc & 0xFF; 1091 buf[2] = (vcc >> 8) & 0xFF; 1092 buf[3] = (vcc >> 16) & 0xFF; 1093 buf[4] = (vcc >> 24) & 0xFF; 1094 1095 status = bulk_immediate(port, buf, 5); 1096 kfree(buf); 1097 1098 if (status != IUU_OPERATION_OK) 1099 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1100 else 1101 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1102 1103 return status; 1104 } 1105 1106 /* 1107 * Sysfs Attributes 1108 */ 1109 1110 static ssize_t vcc_mode_show(struct device *dev, 1111 struct device_attribute *attr, char *buf) 1112 { 1113 struct usb_serial_port *port = to_usb_serial_port(dev); 1114 struct iuu_private *priv = usb_get_serial_port_data(port); 1115 1116 return sprintf(buf, "%d\n", priv->vcc); 1117 } 1118 1119 static ssize_t vcc_mode_store(struct device *dev, 1120 struct device_attribute *attr, const char *buf, size_t count) 1121 { 1122 struct usb_serial_port *port = to_usb_serial_port(dev); 1123 struct iuu_private *priv = usb_get_serial_port_data(port); 1124 unsigned long v; 1125 1126 if (kstrtoul(buf, 10, &v)) { 1127 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1128 __func__, buf); 1129 goto fail_store_vcc_mode; 1130 } 1131 1132 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1133 1134 if ((v != 3) && (v != 5)) { 1135 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1136 } else { 1137 iuu_vcc_set(port, v); 1138 priv->vcc = v; 1139 } 1140 fail_store_vcc_mode: 1141 return count; 1142 } 1143 static DEVICE_ATTR_RW(vcc_mode); 1144 1145 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1146 { 1147 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1148 } 1149 1150 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1151 { 1152 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1153 return 0; 1154 } 1155 1156 /* 1157 * End Sysfs Attributes 1158 */ 1159 1160 static struct usb_serial_driver iuu_device = { 1161 .driver = { 1162 .owner = THIS_MODULE, 1163 .name = "iuu_phoenix", 1164 }, 1165 .id_table = id_table, 1166 .num_ports = 1, 1167 .num_bulk_in = 1, 1168 .num_bulk_out = 1, 1169 .bulk_in_size = 512, 1170 .bulk_out_size = 512, 1171 .open = iuu_open, 1172 .close = iuu_close, 1173 .write = iuu_uart_write, 1174 .read_bulk_callback = iuu_uart_read_callback, 1175 .tiocmget = iuu_tiocmget, 1176 .tiocmset = iuu_tiocmset, 1177 .set_termios = iuu_set_termios, 1178 .init_termios = iuu_init_termios, 1179 .port_probe = iuu_port_probe, 1180 .port_remove = iuu_port_remove, 1181 }; 1182 1183 static struct usb_serial_driver * const serial_drivers[] = { 1184 &iuu_device, NULL 1185 }; 1186 1187 module_usb_serial_driver(serial_drivers, id_table); 1188 1189 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1190 1191 MODULE_DESCRIPTION(DRIVER_DESC); 1192 MODULE_LICENSE("GPL"); 1193 1194 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1195 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1196 1197 module_param(boost, int, S_IRUGO | S_IWUSR); 1198 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1199 1200 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1201 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1202 "3=6 Mhz)"); 1203 1204 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1205 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1206 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1207 1208 module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1209 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1210 "for 5V). Default to 5."); 1211