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 iuu_port_probe(struct usb_serial_port * port)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 iuu_port_remove(struct usb_serial_port * port)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 iuu_tiocmset(struct tty_struct * tty,unsigned int set,unsigned int clear)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 */ iuu_tiocmget(struct tty_struct * tty)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 iuu_rxcmd(struct urb * urb)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 iuu_reset(struct usb_serial_port * port,u8 wt)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 */ iuu_update_status_callback(struct urb * urb)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 iuu_status_callback(struct urb * urb)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 iuu_status(struct usb_serial_port * port)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 bulk_immediate(struct usb_serial_port * port,u8 * buf,u8 count)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 read_immediate(struct usb_serial_port * port,u8 * buf,u8 count)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 iuu_led(struct usb_serial_port * port,unsigned int R,unsigned int G,unsigned int B,u8 f)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 iuu_rgbf_fill_buffer(u8 * buf,u8 r1,u8 r2,u8 g1,u8 g2,u8 b1,u8 b2,u8 freq)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 iuu_led_activity_on(struct urb * urb)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 iuu_led_activity_off(struct urb * urb)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 iuu_clk(struct usb_serial_port * port,int dwFrq)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 iuu_uart_flush(struct usb_serial_port * port)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 read_buf_callback(struct urb * urb)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 iuu_bulk_write(struct usb_serial_port * port)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 iuu_read_buf(struct usb_serial_port * port,int len)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 iuu_uart_read_callback(struct urb * urb)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 len = 0; 647 unsigned char *data = urb->transfer_buffer; 648 priv->poll++; 649 650 if (status) { 651 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status); 652 /* error stop all */ 653 return; 654 } 655 656 if (urb->actual_length == 1) 657 len = (int) data[0]; 658 659 if (urb->actual_length > 1) { 660 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__, 661 urb->actual_length); 662 return; 663 } 664 /* if len > 0 call readbuf */ 665 666 if (len > 0) { 667 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n", 668 __func__, len); 669 status = iuu_read_buf(port, len); 670 return; 671 } 672 /* need to update status ? */ 673 if (priv->poll > 99) { 674 status = iuu_status(port); 675 priv->poll = 0; 676 return; 677 } 678 679 /* reset waiting ? */ 680 681 if (priv->reset == 1) { 682 status = iuu_reset(port, 0xC); 683 return; 684 } 685 /* Writebuf is waiting */ 686 spin_lock_irqsave(&priv->lock, flags); 687 if (priv->writelen > 0) { 688 spin_unlock_irqrestore(&priv->lock, flags); 689 status = iuu_bulk_write(port); 690 return; 691 } 692 spin_unlock_irqrestore(&priv->lock, flags); 693 /* if nothing to write call again rxcmd */ 694 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__); 695 iuu_led_activity_off(urb); 696 } 697 iuu_uart_write(struct tty_struct * tty,struct usb_serial_port * port,const u8 * buf,int count)698 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 699 const u8 *buf, int count) 700 { 701 struct iuu_private *priv = usb_get_serial_port_data(port); 702 unsigned long flags; 703 704 spin_lock_irqsave(&priv->lock, flags); 705 706 count = min(count, 256 - priv->writelen); 707 if (count == 0) 708 goto out; 709 710 /* fill the buffer */ 711 memcpy(priv->writebuf + priv->writelen, buf, count); 712 priv->writelen += count; 713 out: 714 spin_unlock_irqrestore(&priv->lock, flags); 715 716 return count; 717 } 718 read_rxcmd_callback(struct urb * urb)719 static void read_rxcmd_callback(struct urb *urb) 720 { 721 struct usb_serial_port *port = urb->context; 722 int result; 723 int status = urb->status; 724 725 if (status) { 726 /* error stop all */ 727 return; 728 } 729 730 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 731 usb_rcvbulkpipe(port->serial->dev, 732 port->bulk_in_endpointAddress), 733 port->read_urb->transfer_buffer, 256, 734 iuu_uart_read_callback, port); 735 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 736 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result); 737 } 738 iuu_uart_on(struct usb_serial_port * port)739 static int iuu_uart_on(struct usb_serial_port *port) 740 { 741 int status; 742 u8 *buf; 743 744 buf = kmalloc(4, GFP_KERNEL); 745 746 if (!buf) 747 return -ENOMEM; 748 749 buf[0] = IUU_UART_ENABLE; 750 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 751 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 752 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 753 754 status = bulk_immediate(port, buf, 4); 755 if (status != IUU_OPERATION_OK) { 756 dev_dbg(&port->dev, "%s - uart_on error\n", __func__); 757 goto uart_enable_failed; 758 } 759 /* iuu_reset() the card after iuu_uart_on() */ 760 status = iuu_uart_flush(port); 761 if (status != IUU_OPERATION_OK) 762 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__); 763 uart_enable_failed: 764 kfree(buf); 765 return status; 766 } 767 768 /* Disables the IUU UART (a.k.a. the Phoenix voiderface) */ iuu_uart_off(struct usb_serial_port * port)769 static int iuu_uart_off(struct usb_serial_port *port) 770 { 771 int status; 772 u8 *buf; 773 buf = kmalloc(1, GFP_KERNEL); 774 if (!buf) 775 return -ENOMEM; 776 buf[0] = IUU_UART_DISABLE; 777 778 status = bulk_immediate(port, buf, 1); 779 if (status != IUU_OPERATION_OK) 780 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 781 782 kfree(buf); 783 return status; 784 } 785 iuu_uart_baud(struct usb_serial_port * port,u32 baud_base,u32 * actual,u8 parity)786 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 787 u32 *actual, u8 parity) 788 { 789 int status; 790 u32 baud; 791 u8 *dataout; 792 u8 DataCount = 0; 793 u8 T1Frekvens = 0; 794 u8 T1reload = 0; 795 unsigned int T1FrekvensHZ = 0; 796 797 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); 798 dataout = kmalloc(5, GFP_KERNEL); 799 800 if (!dataout) 801 return -ENOMEM; 802 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 803 baud = baud_base; 804 805 if (baud < 1200 || baud > 230400) { 806 kfree(dataout); 807 return IUU_INVALID_PARAMETER; 808 } 809 if (baud > 977) { 810 T1Frekvens = 3; 811 T1FrekvensHZ = 500000; 812 } 813 814 if (baud > 3906) { 815 T1Frekvens = 2; 816 T1FrekvensHZ = 2000000; 817 } 818 819 if (baud > 11718) { 820 T1Frekvens = 1; 821 T1FrekvensHZ = 6000000; 822 } 823 824 if (baud > 46875) { 825 T1Frekvens = 0; 826 T1FrekvensHZ = 24000000; 827 } 828 829 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 830 831 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 832 dataout[DataCount++] = IUU_UART_ESC; 833 /* magic number here: CHANGE_BAUD; */ 834 dataout[DataCount++] = IUU_UART_CHANGE; 835 dataout[DataCount++] = T1Frekvens; 836 dataout[DataCount++] = T1reload; 837 838 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 839 840 switch (parity & 0x0F) { 841 case IUU_PARITY_NONE: 842 dataout[DataCount++] = 0x00; 843 break; 844 case IUU_PARITY_EVEN: 845 dataout[DataCount++] = 0x01; 846 break; 847 case IUU_PARITY_ODD: 848 dataout[DataCount++] = 0x02; 849 break; 850 case IUU_PARITY_MARK: 851 dataout[DataCount++] = 0x03; 852 break; 853 case IUU_PARITY_SPACE: 854 dataout[DataCount++] = 0x04; 855 break; 856 default: 857 kfree(dataout); 858 return IUU_INVALID_PARAMETER; 859 } 860 861 switch (parity & 0xF0) { 862 case IUU_ONE_STOP_BIT: 863 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 864 break; 865 866 case IUU_TWO_STOP_BITS: 867 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 868 break; 869 default: 870 kfree(dataout); 871 return IUU_INVALID_PARAMETER; 872 } 873 874 status = bulk_immediate(port, dataout, DataCount); 875 if (status != IUU_OPERATION_OK) 876 dev_dbg(&port->dev, "%s - uart_off error\n", __func__); 877 kfree(dataout); 878 return status; 879 } 880 iuu_set_termios(struct tty_struct * tty,struct usb_serial_port * port,const struct ktermios * old_termios)881 static void iuu_set_termios(struct tty_struct *tty, 882 struct usb_serial_port *port, 883 const struct ktermios *old_termios) 884 { 885 const u32 supported_mask = CMSPAR|PARENB|PARODD; 886 struct iuu_private *priv = usb_get_serial_port_data(port); 887 unsigned int cflag = tty->termios.c_cflag; 888 int status; 889 u32 actual; 890 u32 parity; 891 int csize = CS7; 892 int baud; 893 u32 newval = cflag & supported_mask; 894 895 /* Just use the ospeed. ispeed should be the same. */ 896 baud = tty->termios.c_ospeed; 897 898 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud); 899 900 /* compute the parity parameter */ 901 parity = 0; 902 if (cflag & CMSPAR) { /* Using mark space */ 903 if (cflag & PARODD) 904 parity |= IUU_PARITY_SPACE; 905 else 906 parity |= IUU_PARITY_MARK; 907 } else if (!(cflag & PARENB)) { 908 parity |= IUU_PARITY_NONE; 909 csize = CS8; 910 } else if (cflag & PARODD) 911 parity |= IUU_PARITY_ODD; 912 else 913 parity |= IUU_PARITY_EVEN; 914 915 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 916 917 /* set it */ 918 status = iuu_uart_baud(port, 919 baud * priv->boost / 100, 920 &actual, parity); 921 922 /* set the termios value to the real one, so the user now what has 923 * changed. We support few fields so its easies to copy the old hw 924 * settings back over and then adjust them 925 */ 926 if (old_termios) 927 tty_termios_copy_hw(&tty->termios, old_termios); 928 if (status != 0) /* Set failed - return old bits */ 929 return; 930 /* Re-encode speed, parity and csize */ 931 tty_encode_baud_rate(tty, baud, baud); 932 tty->termios.c_cflag &= ~(supported_mask|CSIZE); 933 tty->termios.c_cflag |= newval | csize; 934 } 935 iuu_close(struct usb_serial_port * port)936 static void iuu_close(struct usb_serial_port *port) 937 { 938 /* iuu_led (port,255,0,0,0); */ 939 940 iuu_uart_off(port); 941 942 usb_kill_urb(port->write_urb); 943 usb_kill_urb(port->read_urb); 944 945 iuu_led(port, 0, 0, 0xF000, 0xFF); 946 } 947 iuu_init_termios(struct tty_struct * tty)948 static void iuu_init_termios(struct tty_struct *tty) 949 { 950 tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL; 951 tty->termios.c_ispeed = 9600; 952 tty->termios.c_ospeed = 9600; 953 tty->termios.c_lflag = 0; 954 tty->termios.c_oflag = 0; 955 tty->termios.c_iflag = 0; 956 } 957 iuu_open(struct tty_struct * tty,struct usb_serial_port * port)958 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 959 { 960 struct usb_serial *serial = port->serial; 961 struct device *dev = &port->dev; 962 int result; 963 int baud; 964 u32 actual; 965 struct iuu_private *priv = usb_get_serial_port_data(port); 966 967 baud = tty->termios.c_ospeed; 968 969 dev_dbg(dev, "%s - baud %d\n", __func__, baud); 970 usb_clear_halt(serial->dev, port->write_urb->pipe); 971 usb_clear_halt(serial->dev, port->read_urb->pipe); 972 973 priv->poll = 0; 974 975 #define SOUP(a, b, c, d) do { \ 976 result = usb_control_msg(port->serial->dev, \ 977 usb_sndctrlpipe(port->serial->dev, 0), \ 978 b, a, c, d, NULL, 0, 1000); \ 979 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0) 980 981 /* This is not UART related but IUU USB driver related or something */ 982 /* like that. Basically no IUU will accept any commands from the USB */ 983 /* host unless it has received the following message */ 984 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 985 986 SOUP(0x03, 0x02, 0x02, 0x0); 987 988 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 989 iuu_uart_on(port); 990 if (boost < 100) 991 boost = 100; 992 priv->boost = boost; 993 switch (clockmode) { 994 case 2: /* 3.680 Mhz */ 995 priv->clk = IUU_CLK_3680000; 996 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 997 result = 998 iuu_uart_baud(port, baud * boost / 100, &actual, 999 IUU_PARITY_EVEN); 1000 break; 1001 case 3: /* 6.00 Mhz */ 1002 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1003 priv->clk = IUU_CLK_6000000; 1004 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1005 result = 1006 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1007 IUU_PARITY_EVEN); 1008 break; 1009 default: /* 3.579 Mhz */ 1010 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1011 priv->clk = IUU_CLK_3579000; 1012 result = 1013 iuu_uart_baud(port, baud * boost / 100, &actual, 1014 IUU_PARITY_EVEN); 1015 } 1016 1017 /* set the cardin cardout signals */ 1018 switch (cdmode) { 1019 case 0: 1020 iuu_cardin = 0; 1021 iuu_cardout = 0; 1022 break; 1023 case 1: 1024 iuu_cardin = TIOCM_CD; 1025 iuu_cardout = 0; 1026 break; 1027 case 2: 1028 iuu_cardin = 0; 1029 iuu_cardout = TIOCM_CD; 1030 break; 1031 case 3: 1032 iuu_cardin = TIOCM_DSR; 1033 iuu_cardout = 0; 1034 break; 1035 case 4: 1036 iuu_cardin = 0; 1037 iuu_cardout = TIOCM_DSR; 1038 break; 1039 case 5: 1040 iuu_cardin = TIOCM_CTS; 1041 iuu_cardout = 0; 1042 break; 1043 case 6: 1044 iuu_cardin = 0; 1045 iuu_cardout = TIOCM_CTS; 1046 break; 1047 case 7: 1048 iuu_cardin = TIOCM_RNG; 1049 iuu_cardout = 0; 1050 break; 1051 case 8: 1052 iuu_cardin = 0; 1053 iuu_cardout = TIOCM_RNG; 1054 } 1055 1056 iuu_uart_flush(port); 1057 1058 dev_dbg(dev, "%s - initialization done\n", __func__); 1059 1060 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1061 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1062 usb_sndbulkpipe(port->serial->dev, 1063 port->bulk_out_endpointAddress), 1064 port->write_urb->transfer_buffer, 1, 1065 read_rxcmd_callback, port); 1066 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1067 if (result) { 1068 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result); 1069 iuu_close(port); 1070 } else { 1071 dev_dbg(dev, "%s - rxcmd OK\n", __func__); 1072 } 1073 1074 return result; 1075 } 1076 1077 /* how to change VCC */ iuu_vcc_set(struct usb_serial_port * port,unsigned int vcc)1078 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1079 { 1080 int status; 1081 u8 *buf; 1082 1083 buf = kmalloc(5, GFP_KERNEL); 1084 if (!buf) 1085 return -ENOMEM; 1086 1087 buf[0] = IUU_SET_VCC; 1088 buf[1] = vcc & 0xFF; 1089 buf[2] = (vcc >> 8) & 0xFF; 1090 buf[3] = (vcc >> 16) & 0xFF; 1091 buf[4] = (vcc >> 24) & 0xFF; 1092 1093 status = bulk_immediate(port, buf, 5); 1094 kfree(buf); 1095 1096 if (status != IUU_OPERATION_OK) 1097 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status); 1098 else 1099 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__); 1100 1101 return status; 1102 } 1103 1104 /* 1105 * Sysfs Attributes 1106 */ 1107 vcc_mode_show(struct device * dev,struct device_attribute * attr,char * buf)1108 static ssize_t vcc_mode_show(struct device *dev, 1109 struct device_attribute *attr, char *buf) 1110 { 1111 struct usb_serial_port *port = to_usb_serial_port(dev); 1112 struct iuu_private *priv = usb_get_serial_port_data(port); 1113 1114 return sprintf(buf, "%d\n", priv->vcc); 1115 } 1116 vcc_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1117 static ssize_t vcc_mode_store(struct device *dev, 1118 struct device_attribute *attr, const char *buf, size_t count) 1119 { 1120 struct usb_serial_port *port = to_usb_serial_port(dev); 1121 struct iuu_private *priv = usb_get_serial_port_data(port); 1122 unsigned long v; 1123 1124 if (kstrtoul(buf, 10, &v)) { 1125 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1126 __func__, buf); 1127 goto fail_store_vcc_mode; 1128 } 1129 1130 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v); 1131 1132 if ((v != 3) && (v != 5)) { 1133 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1134 } else { 1135 iuu_vcc_set(port, v); 1136 priv->vcc = v; 1137 } 1138 fail_store_vcc_mode: 1139 return count; 1140 } 1141 static DEVICE_ATTR_RW(vcc_mode); 1142 iuu_create_sysfs_attrs(struct usb_serial_port * port)1143 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1144 { 1145 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1146 } 1147 iuu_remove_sysfs_attrs(struct usb_serial_port * port)1148 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1149 { 1150 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1151 return 0; 1152 } 1153 1154 /* 1155 * End Sysfs Attributes 1156 */ 1157 1158 static struct usb_serial_driver iuu_device = { 1159 .driver = { 1160 .owner = THIS_MODULE, 1161 .name = "iuu_phoenix", 1162 }, 1163 .id_table = id_table, 1164 .num_ports = 1, 1165 .num_bulk_in = 1, 1166 .num_bulk_out = 1, 1167 .bulk_in_size = 512, 1168 .bulk_out_size = 512, 1169 .open = iuu_open, 1170 .close = iuu_close, 1171 .write = iuu_uart_write, 1172 .read_bulk_callback = iuu_uart_read_callback, 1173 .tiocmget = iuu_tiocmget, 1174 .tiocmset = iuu_tiocmset, 1175 .set_termios = iuu_set_termios, 1176 .init_termios = iuu_init_termios, 1177 .port_probe = iuu_port_probe, 1178 .port_remove = iuu_port_remove, 1179 }; 1180 1181 static struct usb_serial_driver * const serial_drivers[] = { 1182 &iuu_device, NULL 1183 }; 1184 1185 module_usb_serial_driver(serial_drivers, id_table); 1186 1187 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1188 1189 MODULE_DESCRIPTION(DRIVER_DESC); 1190 MODULE_LICENSE("GPL"); 1191 1192 module_param(xmas, bool, 0644); 1193 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1194 1195 module_param(boost, int, 0644); 1196 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1197 1198 module_param(clockmode, int, 0644); 1199 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1200 "3=6 Mhz)"); 1201 1202 module_param(cdmode, int, 0644); 1203 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1204 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1205 1206 module_param(vcc_default, int, 0644); 1207 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1208 "for 5V). Default to 5."); 1209