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 31static const struct usb_device_id id_table[] = { 32 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 33 {} /* Terminating entry */ 34}; 35MODULE_DEVICE_TABLE(usb, id_table); 36 37/* turbo parameter */ 38static int boost = 100; 39static int clockmode = 1; 40static int cdmode = 1; 41static int iuu_cardin; 42static int iuu_cardout; 43static bool xmas; 44static int vcc_default = 5; 45 46static int iuu_create_sysfs_attrs(struct usb_serial_port *port); 47static int iuu_remove_sysfs_attrs(struct usb_serial_port *port); 48static void read_rxcmd_callback(struct urb *urb); 49 50struct 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 65static 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 103static 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 115static 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 */ 144static 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 158static 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 179static 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 */ 210static 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 240static 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 254static 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 269static 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 290static 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 310static 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 336static 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 349static 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 370static 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 392static 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 530static 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; 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 rxcmd = kmalloc(1, GFP_KERNEL); 542 if (!rxcmd) 543 return -ENOMEM; 544 545 rxcmd[0] = IUU_UART_RX; 546 547 for (i = 0; i < 2; i++) { 548 status = bulk_immediate(port, rxcmd, 1); 549 if (status != IUU_OPERATION_OK) { 550 dev_dbg(dev, "%s - uart_flush_write error\n", __func__); 551 goto out_free; 552 } 553 554 status = read_immediate(port, &priv->len, 1); 555 if (status != IUU_OPERATION_OK) { 556 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 557 goto out_free; 558 } 559 560 if (priv->len > 0) { 561 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len); 562 status = read_immediate(port, priv->buf, priv->len); 563 if (status != IUU_OPERATION_OK) { 564 dev_dbg(dev, "%s - uart_flush_read error\n", __func__); 565 goto out_free; 566 } 567 } 568 } 569 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__); 570 iuu_led(port, 0, 0xF000, 0, 0xFF); 571 572out_free: 573 kfree(rxcmd); 574 575 return status; 576} 577 578static void read_buf_callback(struct urb *urb) 579{ 580 struct usb_serial_port *port = urb->context; 581 unsigned char *data = urb->transfer_buffer; 582 int status = urb->status; 583 584 if (status) { 585 if (status == -EPROTO) { 586 /* reschedule needed */ 587 } 588 return; 589 } 590 591 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); 592 593 if (urb->actual_length) { 594 tty_insert_flip_string(&port->port, data, urb->actual_length); 595 tty_flip_buffer_push(&port->port); 596 } 597 iuu_led_activity_on(urb); 598} 599 600static int iuu_bulk_write(struct usb_serial_port *port) 601{ 602 struct iuu_private *priv = usb_get_serial_port_data(port); 603 unsigned long flags; 604 int result; 605 int buf_len; 606 char *buf_ptr = port->write_urb->transfer_buffer; 607 608 spin_lock_irqsave(&priv->lock, flags); 609 *buf_ptr++ = IUU_UART_ESC; 610 *buf_ptr++ = IUU_UART_TX; 611 *buf_ptr++ = priv->writelen; 612 613 memcpy(buf_ptr, priv->writebuf, priv->writelen); 614 buf_len = priv->writelen; 615 priv->writelen = 0; 616 spin_unlock_irqrestore(&priv->lock, flags); 617 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__, 618 buf_len, buf_len, buf_ptr); 619 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 620 usb_sndbulkpipe(port->serial->dev, 621 port->bulk_out_endpointAddress), 622 port->write_urb->transfer_buffer, buf_len + 3, 623 iuu_rxcmd, port); 624 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 625 usb_serial_port_softint(port); 626 return result; 627} 628 629static int iuu_read_buf(struct usb_serial_port *port, int len) 630{ 631 int result; 632 633 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 634 usb_rcvbulkpipe(port->serial->dev, 635 port->bulk_in_endpointAddress), 636 port->read_urb->transfer_buffer, len, 637 read_buf_callback, port); 638 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 639 return result; 640} 641 642static void iuu_uart_read_callback(struct urb *urb) 643{ 644 struct usb_serial_port *port = urb->context; 645 struct iuu_private *priv = usb_get_serial_port_data(port); 646 unsigned long flags; 647 int status = urb->status; 648 int error = 0; 649 int len = 0; 650 unsigned char *data = urb->transfer_buffer; 651 priv->poll++; 652 653 if (status) { 654 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 655 /* error stop all */ 656 return; 657 } 658 659 if (urb->actual_length == 1) 660 len = (int) data[0]; 661 662 if (urb->actual_length > 1) { 663 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 664 urb->actual_length); 665 error = 1; 666 return; 667 } 668 /* if len > 0 call readbuf */ 669 670 if (len > 0 && error == 0) { 671 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 672 __func__, len); 673 status = iuu_read_buf(port, len); 674 return; 675 } 676 /* need to update status ? */ 677 if (priv->poll > 99) { 678 status = iuu_status(port); 679 priv->poll = 0; 680 return; 681 } 682 683 /* reset waiting ? */ 684 685 if (priv->reset == 1) { 686 status = iuu_reset(port, 0xC); 687 return; 688 } 689 /* Writebuf is waiting */ 690 spin_lock_irqsave(&priv->lock, flags); 691 if (priv->writelen > 0) { 692 spin_unlock_irqrestore(&priv->lock, flags); 693 status = iuu_bulk_write(port); 694 return; 695 } 696 spin_unlock_irqrestore(&priv->lock, flags); 697 /* if nothing to write call again rxcmd */ 698 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 699 iuu_led_activity_off(urb); 700} 701 702static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 703 const u8 *buf, int count) 704{ 705 struct iuu_private *priv = usb_get_serial_port_data(port); 706 unsigned long flags; 707 708 spin_lock_irqsave(&priv->lock, flags); 709 710 count = min(count, 256 - priv->writelen); 711 if (count == 0) 712 goto out; 713 714 /* fill the buffer */ 715 memcpy(priv->writebuf + priv->writelen, buf, count); 716 priv->writelen += count; 717out: 718 spin_unlock_irqrestore(&priv->lock, flags); 719 720 return count; 721} 722 723static void read_rxcmd_callback(struct urb *urb) 724{ 725 struct usb_serial_port *port = urb->context; 726 int result; 727 int status = urb->status; 728 729 if (status) { 730 /* error stop all */ 731 return; 732 } 733 734 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 735 usb_rcvbulkpipe(port->serial->dev, 736 port->bulk_in_endpointAddress), 737 port->read_urb->transfer_buffer, 256, 738 iuu_uart_read_callback, port); 739 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 740 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result); 741} 742 743static int iuu_uart_on(struct usb_serial_port *port) 744{ 745 int status; 746 u8 *buf; 747 748 buf = kmalloc(4, GFP_KERNEL); 749 750 if (!buf) 751 return -ENOMEM; 752 753 buf[0] = IUU_UART_ENABLE; 754 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 755 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 756 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 757 758 status = bulk_immediate(port, buf, 4); 759 if (status != IUU_OPERATION_OK) { 760 dev_dbg(&port->dev, "%s - uart_on error\n", __func__); 761 goto uart_enable_failed; 762 } 763 /* iuu_reset() the card after iuu_uart_on() */ 764 status = iuu_uart_flush(port); 765 if (status != IUU_OPERATION_OK) 766 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__); 767uart_enable_failed: 768 kfree(buf); 769 return status; 770} 771 772/* Disables the IUU UART (a.k.a. the Phoenix voiderface) */ 773static int iuu_uart_off(struct usb_serial_port *port) 774{ 775 int status; 776 u8 *buf; 777 buf = kmalloc(1, GFP_KERNEL); 778 if (!buf) 779 return -ENOMEM; 780 buf[0] = IUU_UART_DISABLE; 781 782 status = bulk_immediate(port, buf, 1); 783 if (status != IUU_OPERATION_OK) 784 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 785 786 kfree(buf); 787 return status; 788} 789 790static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 791 u32 *actual, u8 parity) 792{ 793 int status; 794 u32 baud; 795 u8 *dataout; 796 u8 DataCount = 0; 797 u8 T1Frekvens = 0; 798 u8 T1reload = 0; 799 unsigned int T1FrekvensHZ = 0; 800 801 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); 802 dataout = kmalloc(5, GFP_KERNEL); 803 804 if (!dataout) 805 return -ENOMEM; 806 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 807 baud = baud_base; 808 809 if (baud < 1200 || baud > 230400) { 810 kfree(dataout); 811 return IUU_INVALID_PARAMETER; 812 } 813 if (baud > 977) { 814 T1Frekvens = 3; 815 T1FrekvensHZ = 500000; 816 } 817 818 if (baud > 3906) { 819 T1Frekvens = 2; 820 T1FrekvensHZ = 2000000; 821 } 822 823 if (baud > 11718) { 824 T1Frekvens = 1; 825 T1FrekvensHZ = 6000000; 826 } 827 828 if (baud > 46875) { 829 T1Frekvens = 0; 830 T1FrekvensHZ = 24000000; 831 } 832 833 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 834 835 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 836 dataout[DataCount++] = IUU_UART_ESC; 837 /* magic number here: CHANGE_BAUD; */ 838 dataout[DataCount++] = IUU_UART_CHANGE; 839 dataout[DataCount++] = T1Frekvens; 840 dataout[DataCount++] = T1reload; 841 842 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 843 844 switch (parity & 0x0F) { 845 case IUU_PARITY_NONE: 846 dataout[DataCount++] = 0x00; 847 break; 848 case IUU_PARITY_EVEN: 849 dataout[DataCount++] = 0x01; 850 break; 851 case IUU_PARITY_ODD: 852 dataout[DataCount++] = 0x02; 853 break; 854 case IUU_PARITY_MARK: 855 dataout[DataCount++] = 0x03; 856 break; 857 case IUU_PARITY_SPACE: 858 dataout[DataCount++] = 0x04; 859 break; 860 default: 861 kfree(dataout); 862 return IUU_INVALID_PARAMETER; 863 break; 864 } 865 866 switch (parity & 0xF0) { 867 case IUU_ONE_STOP_BIT: 868 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 869 break; 870 871 case IUU_TWO_STOP_BITS: 872 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 873 break; 874 default: 875 kfree(dataout); 876 return IUU_INVALID_PARAMETER; 877 break; 878 } 879 880 status = bulk_immediate(port, dataout, DataCount); 881 if (status != IUU_OPERATION_OK) 882 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 883 kfree(dataout); 884 return status; 885} 886 887static void iuu_set_termios(struct tty_struct *tty, 888 struct usb_serial_port *port, struct ktermios *old_termios) 889{ 890 const u32 supported_mask = CMSPAR|PARENB|PARODD; 891 struct iuu_private *priv = usb_get_serial_port_data(port); 892 unsigned int cflag = tty->termios.c_cflag; 893 int status; 894 u32 actual; 895 u32 parity; 896 int csize = CS7; 897 int baud; 898 u32 newval = cflag & supported_mask; 899 900 /* Just use the ospeed. ispeed should be the same. */ 901 baud = tty->termios.c_ospeed; 902 903 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud); 904 905 /* compute the parity parameter */ 906 parity = 0; 907 if (cflag & CMSPAR) { /* Using mark space */ 908 if (cflag & PARODD) 909 parity |= IUU_PARITY_SPACE; 910 else 911 parity |= IUU_PARITY_MARK; 912 } else if (!(cflag & PARENB)) { 913 parity |= IUU_PARITY_NONE; 914 csize = CS8; 915 } else if (cflag & PARODD) 916 parity |= IUU_PARITY_ODD; 917 else 918 parity |= IUU_PARITY_EVEN; 919 920 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 921 922 /* set it */ 923 status = iuu_uart_baud(port, 924 baud * priv->boost / 100, 925 &actual, parity); 926 927 /* set the termios value to the real one, so the user now what has 928 * changed. We support few fields so its easies to copy the old hw 929 * settings back over and then adjust them 930 */ 931 if (old_termios) 932 tty_termios_copy_hw(&tty->termios, old_termios); 933 if (status != 0) /* Set failed - return old bits */ 934 return; 935 /* Re-encode speed, parity and csize */ 936 tty_encode_baud_rate(tty, baud, baud); 937 tty->termios.c_cflag &= ~(supported_mask|CSIZE); 938 tty->termios.c_cflag |= newval | csize; 939} 940 941static void iuu_close(struct usb_serial_port *port) 942{ 943 /* iuu_led (port,255,0,0,0); */ 944 945 iuu_uart_off(port); 946 947 usb_kill_urb(port->write_urb); 948 usb_kill_urb(port->read_urb); 949 950 iuu_led(port, 0, 0, 0xF000, 0xFF); 951} 952 953static void iuu_init_termios(struct tty_struct *tty) 954{ 955 tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL; 956 tty->termios.c_ispeed = 9600; 957 tty->termios.c_ospeed = 9600; 958 tty->termios.c_lflag = 0; 959 tty->termios.c_oflag = 0; 960 tty->termios.c_iflag = 0; 961} 962 963static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 964{ 965 struct usb_serial *serial = port->serial; 966 struct device *dev = &port->dev; 967 int result; 968 int baud; 969 u32 actual; 970 struct iuu_private *priv = usb_get_serial_port_data(port); 971 972 baud = tty->termios.c_ospeed; 973 974 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 975 usb_clear_halt(serial->dev, port->write_urb->pipe); 976 usb_clear_halt(serial->dev, port->read_urb->pipe); 977 978 priv->poll = 0; 979 980#define SOUP(a, b, c, d) do { \ 981 result = usb_control_msg(port->serial->dev, \ 982 usb_sndctrlpipe(port->serial->dev, 0), \ 983 b, a, c, d, NULL, 0, 1000); \ 984 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 985 986 /* This is not UART related but IUU USB driver related or something */ 987 /* like that. Basically no IUU will accept any commands from the USB */ 988 /* host unless it has received the following message */ 989 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 990 991 SOUP(0x03, 0x02, 0x02, 0x0); 992 993 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 994 iuu_uart_on(port); 995 if (boost < 100) 996 boost = 100; 997 priv->boost = boost; 998 switch (clockmode) { 999 case 2: /* 3.680 Mhz */ 1000 priv->clk = IUU_CLK_3680000; 1001 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1002 result = 1003 iuu_uart_baud(port, baud * boost / 100, &actual, 1004 IUU_PARITY_EVEN); 1005 break; 1006 case 3: /* 6.00 Mhz */ 1007 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1008 priv->clk = IUU_CLK_6000000; 1009 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1010 result = 1011 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1012 IUU_PARITY_EVEN); 1013 break; 1014 default: /* 3.579 Mhz */ 1015 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1016 priv->clk = IUU_CLK_3579000; 1017 result = 1018 iuu_uart_baud(port, baud * boost / 100, &actual, 1019 IUU_PARITY_EVEN); 1020 } 1021 1022 /* set the cardin cardout signals */ 1023 switch (cdmode) { 1024 case 0: 1025 iuu_cardin = 0; 1026 iuu_cardout = 0; 1027 break; 1028 case 1: 1029 iuu_cardin = TIOCM_CD; 1030 iuu_cardout = 0; 1031 break; 1032 case 2: 1033 iuu_cardin = 0; 1034 iuu_cardout = TIOCM_CD; 1035 break; 1036 case 3: 1037 iuu_cardin = TIOCM_DSR; 1038 iuu_cardout = 0; 1039 break; 1040 case 4: 1041 iuu_cardin = 0; 1042 iuu_cardout = TIOCM_DSR; 1043 break; 1044 case 5: 1045 iuu_cardin = TIOCM_CTS; 1046 iuu_cardout = 0; 1047 break; 1048 case 6: 1049 iuu_cardin = 0; 1050 iuu_cardout = TIOCM_CTS; 1051 break; 1052 case 7: 1053 iuu_cardin = TIOCM_RNG; 1054 iuu_cardout = 0; 1055 break; 1056 case 8: 1057 iuu_cardin = 0; 1058 iuu_cardout = TIOCM_RNG; 1059 } 1060 1061 iuu_uart_flush(port); 1062 1063 dev_dbg(dev, "%s - initialization done\n", __func__); 1064 1065 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1066 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1067 usb_sndbulkpipe(port->serial->dev, 1068 port->bulk_out_endpointAddress), 1069 port->write_urb->transfer_buffer, 1, 1070 read_rxcmd_callback, port); 1071 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1072 if (result) { 1073 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1074 iuu_close(port); 1075 } else { 1076 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1077 } 1078 1079 return result; 1080} 1081 1082/* how to change VCC */ 1083static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1084{ 1085 int status; 1086 u8 *buf; 1087 1088 buf = kmalloc(5, GFP_KERNEL); 1089 if (!buf) 1090 return -ENOMEM; 1091 1092 buf[0] = IUU_SET_VCC; 1093 buf[1] = vcc & 0xFF; 1094 buf[2] = (vcc >> 8) & 0xFF; 1095 buf[3] = (vcc >> 16) & 0xFF; 1096 buf[4] = (vcc >> 24) & 0xFF; 1097 1098 status = bulk_immediate(port, buf, 5); 1099 kfree(buf); 1100 1101 if (status != IUU_OPERATION_OK) 1102 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1103 else 1104 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1105 1106 return status; 1107} 1108 1109/* 1110 * Sysfs Attributes 1111 */ 1112 1113static ssize_t vcc_mode_show(struct device *dev, 1114 struct device_attribute *attr, char *buf) 1115{ 1116 struct usb_serial_port *port = to_usb_serial_port(dev); 1117 struct iuu_private *priv = usb_get_serial_port_data(port); 1118 1119 return sprintf(buf, "%d\n", priv->vcc); 1120} 1121 1122static ssize_t vcc_mode_store(struct device *dev, 1123 struct device_attribute *attr, const char *buf, size_t count) 1124{ 1125 struct usb_serial_port *port = to_usb_serial_port(dev); 1126 struct iuu_private *priv = usb_get_serial_port_data(port); 1127 unsigned long v; 1128 1129 if (kstrtoul(buf, 10, &v)) { 1130 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1131 __func__, buf); 1132 goto fail_store_vcc_mode; 1133 } 1134 1135 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1136 1137 if ((v != 3) && (v != 5)) { 1138 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1139 } else { 1140 iuu_vcc_set(port, v); 1141 priv->vcc = v; 1142 } 1143fail_store_vcc_mode: 1144 return count; 1145} 1146static DEVICE_ATTR_RW(vcc_mode); 1147 1148static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1149{ 1150 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1151} 1152 1153static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1154{ 1155 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1156 return 0; 1157} 1158 1159/* 1160 * End Sysfs Attributes 1161 */ 1162 1163static struct usb_serial_driver iuu_device = { 1164 .driver = { 1165 .owner = THIS_MODULE, 1166 .name = "iuu_phoenix", 1167 }, 1168 .id_table = id_table, 1169 .num_ports = 1, 1170 .num_bulk_in = 1, 1171 .num_bulk_out = 1, 1172 .bulk_in_size = 512, 1173 .bulk_out_size = 512, 1174 .open = iuu_open, 1175 .close = iuu_close, 1176 .write = iuu_uart_write, 1177 .read_bulk_callback = iuu_uart_read_callback, 1178 .tiocmget = iuu_tiocmget, 1179 .tiocmset = iuu_tiocmset, 1180 .set_termios = iuu_set_termios, 1181 .init_termios = iuu_init_termios, 1182 .port_probe = iuu_port_probe, 1183 .port_remove = iuu_port_remove, 1184}; 1185 1186static struct usb_serial_driver * const serial_drivers[] = { 1187 &iuu_device, NULL 1188}; 1189 1190module_usb_serial_driver(serial_drivers, id_table); 1191 1192MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1193 1194MODULE_DESCRIPTION(DRIVER_DESC); 1195MODULE_LICENSE("GPL"); 1196 1197module_param(xmas, bool, S_IRUGO | S_IWUSR); 1198MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1199 1200module_param(boost, int, S_IRUGO | S_IWUSR); 1201MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1202 1203module_param(clockmode, int, S_IRUGO | S_IWUSR); 1204MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1205 "3=6 Mhz)"); 1206 1207module_param(cdmode, int, S_IRUGO | S_IWUSR); 1208MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1209 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1210 1211module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1212MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1213 "for 5V). Default to 5."); 1214