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