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