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 status = urb->status; 162 163 if (status) { 164 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 165 /* error stop all */ 166 return; 167 } 168 169 170 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 171 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 172 usb_sndbulkpipe(port->serial->dev, 173 port->bulk_out_endpointAddress), 174 port->write_urb->transfer_buffer, 1, 175 read_rxcmd_callback, port); 176 usb_submit_urb(port->write_urb, GFP_ATOMIC); 177 } 178 179 static int iuu_reset(struct usb_serial_port *port, u8 wt) 180 { 181 struct iuu_private *priv = usb_get_serial_port_data(port); 182 int result; 183 char *buf_ptr = port->write_urb->transfer_buffer; 184 185 /* Prepare the reset sequence */ 186 187 *buf_ptr++ = IUU_RST_SET; 188 *buf_ptr++ = IUU_DELAY_MS; 189 *buf_ptr++ = wt; 190 *buf_ptr = IUU_RST_CLEAR; 191 192 /* send the sequence */ 193 194 usb_fill_bulk_urb(port->write_urb, 195 port->serial->dev, 196 usb_sndbulkpipe(port->serial->dev, 197 port->bulk_out_endpointAddress), 198 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 199 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 200 priv->reset = 0; 201 return result; 202 } 203 204 /* Status Function 205 * Return value is 206 * 0x00 = no card 207 * 0x01 = smartcard 208 * 0x02 = sim card 209 */ 210 static void iuu_update_status_callback(struct urb *urb) 211 { 212 struct usb_serial_port *port = urb->context; 213 struct iuu_private *priv = usb_get_serial_port_data(port); 214 u8 *st; 215 int status = urb->status; 216 217 if (status) { 218 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 219 /* error stop all */ 220 return; 221 } 222 223 st = urb->transfer_buffer; 224 dev_dbg(&port->dev, "%s - enter\n", __func__); 225 if (urb->actual_length == 1) { 226 switch (st[0]) { 227 case 0x1: 228 priv->tiostatus = iuu_cardout; 229 break; 230 case 0x0: 231 priv->tiostatus = iuu_cardin; 232 break; 233 default: 234 priv->tiostatus = iuu_cardin; 235 } 236 } 237 iuu_rxcmd(urb); 238 } 239 240 static void iuu_status_callback(struct urb *urb) 241 { 242 struct usb_serial_port *port = urb->context; 243 int status = urb->status; 244 245 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 246 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 247 usb_rcvbulkpipe(port->serial->dev, 248 port->bulk_in_endpointAddress), 249 port->read_urb->transfer_buffer, 256, 250 iuu_update_status_callback, port); 251 usb_submit_urb(port->read_urb, GFP_ATOMIC); 252 } 253 254 static int iuu_status(struct usb_serial_port *port) 255 { 256 int result; 257 258 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 259 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 260 usb_sndbulkpipe(port->serial->dev, 261 port->bulk_out_endpointAddress), 262 port->write_urb->transfer_buffer, 1, 263 iuu_status_callback, port); 264 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 265 return result; 266 267 } 268 269 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 270 { 271 int status; 272 struct usb_serial *serial = port->serial; 273 int actual = 0; 274 275 /* send the data out the bulk port */ 276 277 status = 278 usb_bulk_msg(serial->dev, 279 usb_sndbulkpipe(serial->dev, 280 port->bulk_out_endpointAddress), buf, 281 count, &actual, 1000); 282 283 if (status != IUU_OPERATION_OK) 284 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 285 else 286 dev_dbg(&port->dev, "%s - write OK !\n", __func__); 287 return status; 288 } 289 290 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 291 { 292 int status; 293 struct usb_serial *serial = port->serial; 294 int actual = 0; 295 296 /* send the data out the bulk port */ 297 status = 298 usb_bulk_msg(serial->dev, 299 usb_rcvbulkpipe(serial->dev, 300 port->bulk_in_endpointAddress), buf, 301 count, &actual, 1000); 302 303 if (status != IUU_OPERATION_OK) 304 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status); 305 else 306 dev_dbg(&port->dev, "%s - read OK !\n", __func__); 307 return status; 308 } 309 310 static int iuu_led(struct usb_serial_port *port, unsigned int R, 311 unsigned int G, unsigned int B, u8 f) 312 { 313 int status; 314 u8 *buf; 315 buf = kmalloc(8, GFP_KERNEL); 316 if (!buf) 317 return -ENOMEM; 318 319 buf[0] = IUU_SET_LED; 320 buf[1] = R & 0xFF; 321 buf[2] = (R >> 8) & 0xFF; 322 buf[3] = G & 0xFF; 323 buf[4] = (G >> 8) & 0xFF; 324 buf[5] = B & 0xFF; 325 buf[6] = (B >> 8) & 0xFF; 326 buf[7] = f; 327 status = bulk_immediate(port, buf, 8); 328 kfree(buf); 329 if (status != IUU_OPERATION_OK) 330 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status); 331 else 332 dev_dbg(&port->dev, "%s - led OK !\n", __func__); 333 return IUU_OPERATION_OK; 334 } 335 336 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 337 u8 b2, u8 freq) 338 { 339 *buf++ = IUU_SET_LED; 340 *buf++ = r1; 341 *buf++ = r2; 342 *buf++ = g1; 343 *buf++ = g2; 344 *buf++ = b1; 345 *buf++ = b2; 346 *buf = freq; 347 } 348 349 static void iuu_led_activity_on(struct urb *urb) 350 { 351 struct usb_serial_port *port = urb->context; 352 char *buf_ptr = port->write_urb->transfer_buffer; 353 354 if (xmas) { 355 buf_ptr[0] = IUU_SET_LED; 356 get_random_bytes(buf_ptr + 1, 6); 357 buf_ptr[7] = 1; 358 } else { 359 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 360 } 361 362 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 363 usb_sndbulkpipe(port->serial->dev, 364 port->bulk_out_endpointAddress), 365 port->write_urb->transfer_buffer, 8 , 366 iuu_rxcmd, port); 367 usb_submit_urb(port->write_urb, GFP_ATOMIC); 368 } 369 370 static void iuu_led_activity_off(struct urb *urb) 371 { 372 struct usb_serial_port *port = urb->context; 373 char *buf_ptr = port->write_urb->transfer_buffer; 374 375 if (xmas) { 376 iuu_rxcmd(urb); 377 return; 378 } 379 380 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 381 382 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 383 usb_sndbulkpipe(port->serial->dev, 384 port->bulk_out_endpointAddress), 385 port->write_urb->transfer_buffer, 8 , 386 iuu_rxcmd, port); 387 usb_submit_urb(port->write_urb, GFP_ATOMIC); 388 } 389 390 391 392 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 393 { 394 int status; 395 struct iuu_private *priv = usb_get_serial_port_data(port); 396 int Count = 0; 397 u8 FrqGenAdr = 0x69; 398 u8 DIV = 0; /* 8bit */ 399 u8 XDRV = 0; /* 8bit */ 400 u8 PUMP = 0; /* 3bit */ 401 u8 PBmsb = 0; /* 2bit */ 402 u8 PBlsb = 0; /* 8bit */ 403 u8 PO = 0; /* 1bit */ 404 u8 Q = 0; /* 7bit */ 405 /* 24bit = 3bytes */ 406 unsigned int P = 0; 407 unsigned int P2 = 0; 408 int frq = (int)dwFrq; 409 410 if (frq == 0) { 411 priv->buf[Count++] = IUU_UART_WRITE_I2C; 412 priv->buf[Count++] = FrqGenAdr << 1; 413 priv->buf[Count++] = 0x09; 414 priv->buf[Count++] = 0x00; 415 416 status = bulk_immediate(port, (u8 *) priv->buf, Count); 417 if (status != 0) { 418 dev_dbg(&port->dev, "%s - write error\n", __func__); 419 return status; 420 } 421 } else if (frq == 3579000) { 422 DIV = 100; 423 P = 1193; 424 Q = 40; 425 XDRV = 0; 426 } else if (frq == 3680000) { 427 DIV = 105; 428 P = 161; 429 Q = 5; 430 XDRV = 0; 431 } else if (frq == 6000000) { 432 DIV = 66; 433 P = 66; 434 Q = 2; 435 XDRV = 0x28; 436 } else { 437 unsigned int result = 0; 438 unsigned int tmp = 0; 439 unsigned int check; 440 unsigned int check2; 441 char found = 0x00; 442 unsigned int lQ = 2; 443 unsigned int lP = 2055; 444 unsigned int lDiv = 4; 445 446 for (lQ = 2; lQ <= 47 && !found; lQ++) 447 for (lP = 2055; lP >= 8 && !found; lP--) 448 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 449 tmp = (12000000 / lDiv) * (lP / lQ); 450 if (abs((int)(tmp - frq)) < 451 abs((int)(frq - result))) { 452 check2 = (12000000 / lQ); 453 if (check2 < 250000) 454 continue; 455 check = (12000000 / lQ) * lP; 456 if (check > 400000000) 457 continue; 458 if (check < 100000000) 459 continue; 460 if (lDiv < 4 || lDiv > 127) 461 continue; 462 result = tmp; 463 P = lP; 464 DIV = lDiv; 465 Q = lQ; 466 if (result == frq) 467 found = 0x01; 468 } 469 } 470 } 471 P2 = ((P - PO) / 2) - 4; 472 PUMP = 0x04; 473 PBmsb = (P2 >> 8 & 0x03); 474 PBlsb = P2 & 0xFF; 475 PO = (P >> 10) & 0x01; 476 Q = Q - 2; 477 478 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 479 priv->buf[Count++] = FrqGenAdr << 1; 480 priv->buf[Count++] = 0x09; 481 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 482 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 483 priv->buf[Count++] = FrqGenAdr << 1; 484 priv->buf[Count++] = 0x0C; 485 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 486 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 487 priv->buf[Count++] = FrqGenAdr << 1; 488 priv->buf[Count++] = 0x12; 489 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 490 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 491 priv->buf[Count++] = FrqGenAdr << 1; 492 priv->buf[Count++] = 0x13; 493 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 494 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 495 priv->buf[Count++] = FrqGenAdr << 1; 496 priv->buf[Count++] = 0x40; 497 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 498 (PBmsb & 0x03); /* Adr = 0x40 */ 499 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 500 priv->buf[Count++] = FrqGenAdr << 1; 501 priv->buf[Count++] = 0x41; 502 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 503 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 504 priv->buf[Count++] = FrqGenAdr << 1; 505 priv->buf[Count++] = 0x42; 506 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 507 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 508 priv->buf[Count++] = FrqGenAdr << 1; 509 priv->buf[Count++] = 0x44; 510 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 511 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 512 priv->buf[Count++] = FrqGenAdr << 1; 513 priv->buf[Count++] = 0x45; 514 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 515 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 516 priv->buf[Count++] = FrqGenAdr << 1; 517 priv->buf[Count++] = 0x46; 518 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 519 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 520 priv->buf[Count++] = FrqGenAdr << 1; 521 priv->buf[Count++] = 0x47; 522 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 523 524 status = bulk_immediate(port, (u8 *) priv->buf, Count); 525 if (status != IUU_OPERATION_OK) 526 dev_dbg(&port->dev, "%s - write error\n", __func__); 527 return status; 528 } 529 530 static int iuu_uart_flush(struct usb_serial_port *port) 531 { 532 struct device *dev = &port->dev; 533 int i; 534 int status; 535 u8 rxcmd = IUU_UART_RX; 536 struct iuu_private *priv = usb_get_serial_port_data(port); 537 538 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 539 return -EIO; 540 541 for (i = 0; i < 2; i++) { 542 status = bulk_immediate(port, &rxcmd, 1); 543 if (status != IUU_OPERATION_OK) { 544 dev_dbg(dev, "%s - uart_flush_write error\n", __func__); 545 return status; 546 } 547 548 status = read_immediate(port, &priv->len, 1); 549 if (status != IUU_OPERATION_OK) { 550 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 551 return status; 552 } 553 554 if (priv->len > 0) { 555 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len); 556 status = read_immediate(port, priv->buf, priv->len); 557 if (status != IUU_OPERATION_OK) { 558 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 559 return status; 560 } 561 } 562 } 563 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__); 564 iuu_led(port, 0, 0xF000, 0, 0xFF); 565 return status; 566 } 567 568 static void read_buf_callback(struct urb *urb) 569 { 570 struct usb_serial_port *port = urb->context; 571 unsigned char *data = urb->transfer_buffer; 572 int status = urb->status; 573 574 if (status) { 575 if (status == -EPROTO) { 576 /* reschedule needed */ 577 } 578 return; 579 } 580 581 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); 582 583 if (urb->actual_length) { 584 tty_insert_flip_string(&port->port, data, urb->actual_length); 585 tty_flip_buffer_push(&port->port); 586 } 587 iuu_led_activity_on(urb); 588 } 589 590 static int iuu_bulk_write(struct usb_serial_port *port) 591 { 592 struct iuu_private *priv = usb_get_serial_port_data(port); 593 unsigned long flags; 594 int result; 595 int buf_len; 596 char *buf_ptr = port->write_urb->transfer_buffer; 597 598 spin_lock_irqsave(&priv->lock, flags); 599 *buf_ptr++ = IUU_UART_ESC; 600 *buf_ptr++ = IUU_UART_TX; 601 *buf_ptr++ = priv->writelen; 602 603 memcpy(buf_ptr, priv->writebuf, priv->writelen); 604 buf_len = priv->writelen; 605 priv->writelen = 0; 606 spin_unlock_irqrestore(&priv->lock, flags); 607 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__, 608 buf_len, buf_len, buf_ptr); 609 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 610 usb_sndbulkpipe(port->serial->dev, 611 port->bulk_out_endpointAddress), 612 port->write_urb->transfer_buffer, buf_len + 3, 613 iuu_rxcmd, port); 614 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 615 usb_serial_port_softint(port); 616 return result; 617 } 618 619 static int iuu_read_buf(struct usb_serial_port *port, int len) 620 { 621 int result; 622 623 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 624 usb_rcvbulkpipe(port->serial->dev, 625 port->bulk_in_endpointAddress), 626 port->read_urb->transfer_buffer, len, 627 read_buf_callback, port); 628 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 629 return result; 630 } 631 632 static void iuu_uart_read_callback(struct urb *urb) 633 { 634 struct usb_serial_port *port = urb->context; 635 struct iuu_private *priv = usb_get_serial_port_data(port); 636 unsigned long flags; 637 int status = urb->status; 638 int error = 0; 639 int len = 0; 640 unsigned char *data = urb->transfer_buffer; 641 priv->poll++; 642 643 if (status) { 644 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 645 /* error stop all */ 646 return; 647 } 648 649 if (urb->actual_length == 1) 650 len = (int) data[0]; 651 652 if (urb->actual_length > 1) { 653 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 654 urb->actual_length); 655 error = 1; 656 return; 657 } 658 /* if len > 0 call readbuf */ 659 660 if (len > 0 && error == 0) { 661 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 662 __func__, len); 663 status = iuu_read_buf(port, len); 664 return; 665 } 666 /* need to update status ? */ 667 if (priv->poll > 99) { 668 status = iuu_status(port); 669 priv->poll = 0; 670 return; 671 } 672 673 /* reset waiting ? */ 674 675 if (priv->reset == 1) { 676 status = iuu_reset(port, 0xC); 677 return; 678 } 679 /* Writebuf is waiting */ 680 spin_lock_irqsave(&priv->lock, flags); 681 if (priv->writelen > 0) { 682 spin_unlock_irqrestore(&priv->lock, flags); 683 status = iuu_bulk_write(port); 684 return; 685 } 686 spin_unlock_irqrestore(&priv->lock, flags); 687 /* if nothing to write call again rxcmd */ 688 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 689 iuu_led_activity_off(urb); 690 } 691 692 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 693 const u8 *buf, int count) 694 { 695 struct iuu_private *priv = usb_get_serial_port_data(port); 696 unsigned long flags; 697 698 spin_lock_irqsave(&priv->lock, flags); 699 700 count = min(count, 256 - priv->writelen); 701 if (count == 0) 702 goto out; 703 704 /* fill the buffer */ 705 memcpy(priv->writebuf + priv->writelen, buf, count); 706 priv->writelen += count; 707 out: 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.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL; 946 tty->termios.c_ispeed = 9600; 947 tty->termios.c_ospeed = 9600; 948 tty->termios.c_lflag = 0; 949 tty->termios.c_oflag = 0; 950 tty->termios.c_iflag = 0; 951 } 952 953 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 954 { 955 struct usb_serial *serial = port->serial; 956 struct device *dev = &port->dev; 957 int result; 958 int baud; 959 u32 actual; 960 struct iuu_private *priv = usb_get_serial_port_data(port); 961 962 baud = tty->termios.c_ospeed; 963 964 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 965 usb_clear_halt(serial->dev, port->write_urb->pipe); 966 usb_clear_halt(serial->dev, port->read_urb->pipe); 967 968 priv->poll = 0; 969 970 #define SOUP(a, b, c, d) do { \ 971 result = usb_control_msg(port->serial->dev, \ 972 usb_sndctrlpipe(port->serial->dev, 0), \ 973 b, a, c, d, NULL, 0, 1000); \ 974 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 975 976 /* This is not UART related but IUU USB driver related or something */ 977 /* like that. Basically no IUU will accept any commands from the USB */ 978 /* host unless it has received the following message */ 979 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 980 981 SOUP(0x03, 0x02, 0x02, 0x0); 982 983 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 984 iuu_uart_on(port); 985 if (boost < 100) 986 boost = 100; 987 priv->boost = boost; 988 switch (clockmode) { 989 case 2: /* 3.680 Mhz */ 990 priv->clk = IUU_CLK_3680000; 991 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 992 result = 993 iuu_uart_baud(port, baud * boost / 100, &actual, 994 IUU_PARITY_EVEN); 995 break; 996 case 3: /* 6.00 Mhz */ 997 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 998 priv->clk = IUU_CLK_6000000; 999 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1000 result = 1001 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1002 IUU_PARITY_EVEN); 1003 break; 1004 default: /* 3.579 Mhz */ 1005 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1006 priv->clk = IUU_CLK_3579000; 1007 result = 1008 iuu_uart_baud(port, baud * boost / 100, &actual, 1009 IUU_PARITY_EVEN); 1010 } 1011 1012 /* set the cardin cardout signals */ 1013 switch (cdmode) { 1014 case 0: 1015 iuu_cardin = 0; 1016 iuu_cardout = 0; 1017 break; 1018 case 1: 1019 iuu_cardin = TIOCM_CD; 1020 iuu_cardout = 0; 1021 break; 1022 case 2: 1023 iuu_cardin = 0; 1024 iuu_cardout = TIOCM_CD; 1025 break; 1026 case 3: 1027 iuu_cardin = TIOCM_DSR; 1028 iuu_cardout = 0; 1029 break; 1030 case 4: 1031 iuu_cardin = 0; 1032 iuu_cardout = TIOCM_DSR; 1033 break; 1034 case 5: 1035 iuu_cardin = TIOCM_CTS; 1036 iuu_cardout = 0; 1037 break; 1038 case 6: 1039 iuu_cardin = 0; 1040 iuu_cardout = TIOCM_CTS; 1041 break; 1042 case 7: 1043 iuu_cardin = TIOCM_RNG; 1044 iuu_cardout = 0; 1045 break; 1046 case 8: 1047 iuu_cardin = 0; 1048 iuu_cardout = TIOCM_RNG; 1049 } 1050 1051 iuu_uart_flush(port); 1052 1053 dev_dbg(dev, "%s - initialization done\n", __func__); 1054 1055 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1056 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1057 usb_sndbulkpipe(port->serial->dev, 1058 port->bulk_out_endpointAddress), 1059 port->write_urb->transfer_buffer, 1, 1060 read_rxcmd_callback, port); 1061 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1062 if (result) { 1063 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1064 iuu_close(port); 1065 } else { 1066 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1067 } 1068 1069 return result; 1070 } 1071 1072 /* how to change VCC */ 1073 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1074 { 1075 int status; 1076 u8 *buf; 1077 1078 buf = kmalloc(5, GFP_KERNEL); 1079 if (!buf) 1080 return -ENOMEM; 1081 1082 buf[0] = IUU_SET_VCC; 1083 buf[1] = vcc & 0xFF; 1084 buf[2] = (vcc >> 8) & 0xFF; 1085 buf[3] = (vcc >> 16) & 0xFF; 1086 buf[4] = (vcc >> 24) & 0xFF; 1087 1088 status = bulk_immediate(port, buf, 5); 1089 kfree(buf); 1090 1091 if (status != IUU_OPERATION_OK) 1092 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1093 else 1094 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1095 1096 return status; 1097 } 1098 1099 /* 1100 * Sysfs Attributes 1101 */ 1102 1103 static ssize_t vcc_mode_show(struct device *dev, 1104 struct device_attribute *attr, char *buf) 1105 { 1106 struct usb_serial_port *port = to_usb_serial_port(dev); 1107 struct iuu_private *priv = usb_get_serial_port_data(port); 1108 1109 return sprintf(buf, "%d\n", priv->vcc); 1110 } 1111 1112 static ssize_t vcc_mode_store(struct device *dev, 1113 struct device_attribute *attr, const char *buf, size_t count) 1114 { 1115 struct usb_serial_port *port = to_usb_serial_port(dev); 1116 struct iuu_private *priv = usb_get_serial_port_data(port); 1117 unsigned long v; 1118 1119 if (kstrtoul(buf, 10, &v)) { 1120 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1121 __func__, buf); 1122 goto fail_store_vcc_mode; 1123 } 1124 1125 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1126 1127 if ((v != 3) && (v != 5)) { 1128 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1129 } else { 1130 iuu_vcc_set(port, v); 1131 priv->vcc = v; 1132 } 1133 fail_store_vcc_mode: 1134 return count; 1135 } 1136 static DEVICE_ATTR_RW(vcc_mode); 1137 1138 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1139 { 1140 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1141 } 1142 1143 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1144 { 1145 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1146 return 0; 1147 } 1148 1149 /* 1150 * End Sysfs Attributes 1151 */ 1152 1153 static struct usb_serial_driver iuu_device = { 1154 .driver = { 1155 .owner = THIS_MODULE, 1156 .name = "iuu_phoenix", 1157 }, 1158 .id_table = id_table, 1159 .num_ports = 1, 1160 .num_bulk_in = 1, 1161 .num_bulk_out = 1, 1162 .bulk_in_size = 512, 1163 .bulk_out_size = 512, 1164 .open = iuu_open, 1165 .close = iuu_close, 1166 .write = iuu_uart_write, 1167 .read_bulk_callback = iuu_uart_read_callback, 1168 .tiocmget = iuu_tiocmget, 1169 .tiocmset = iuu_tiocmset, 1170 .set_termios = iuu_set_termios, 1171 .init_termios = iuu_init_termios, 1172 .port_probe = iuu_port_probe, 1173 .port_remove = iuu_port_remove, 1174 }; 1175 1176 static struct usb_serial_driver * const serial_drivers[] = { 1177 &iuu_device, NULL 1178 }; 1179 1180 module_usb_serial_driver(serial_drivers, id_table); 1181 1182 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1183 1184 MODULE_DESCRIPTION(DRIVER_DESC); 1185 MODULE_LICENSE("GPL"); 1186 1187 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1188 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1189 1190 module_param(boost, int, S_IRUGO | S_IWUSR); 1191 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1192 1193 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1194 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1195 "3=6 Mhz)"); 1196 1197 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1198 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1199 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1200 1201 module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1202 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1203 "for 5V). Default to 5."); 1204