1/* Linux driver for devices based on the DiBcom DiB0700 USB bridge 2 * 3 * This program is free software; you can redistribute it and/or modify it 4 * under the terms of the GNU General Public License as published by the Free 5 * Software Foundation, version 2. 6 * 7 * Copyright (C) 2005-6 DiBcom, SA 8 */ 9#include "dib0700.h" 10 11/* debug */ 12int dvb_usb_dib0700_debug; 13module_param_named(debug,dvb_usb_dib0700_debug, int, 0644); 14MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS); 15 16static int nb_packet_buffer_size = 21; 17module_param(nb_packet_buffer_size, int, 0644); 18MODULE_PARM_DESC(nb_packet_buffer_size, 19 "Set the dib0700 driver data buffer size. This parameter " 20 "corresponds to the number of TS packets. The actual size of " 21 "the data buffer corresponds to this parameter " 22 "multiplied by 188 (default: 21)"); 23 24DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 25 26 27int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion, 28 u32 *romversion, u32 *ramversion, u32 *fwtype) 29{ 30 struct dib0700_state *st = d->priv; 31 int ret; 32 33 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 34 err("could not acquire lock"); 35 return 0; 36 } 37 38 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), 39 REQUEST_GET_VERSION, 40 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, 41 st->buf, 16, USB_CTRL_GET_TIMEOUT); 42 if (hwversion != NULL) 43 *hwversion = (st->buf[0] << 24) | (st->buf[1] << 16) | 44 (st->buf[2] << 8) | st->buf[3]; 45 if (romversion != NULL) 46 *romversion = (st->buf[4] << 24) | (st->buf[5] << 16) | 47 (st->buf[6] << 8) | st->buf[7]; 48 if (ramversion != NULL) 49 *ramversion = (st->buf[8] << 24) | (st->buf[9] << 16) | 50 (st->buf[10] << 8) | st->buf[11]; 51 if (fwtype != NULL) 52 *fwtype = (st->buf[12] << 24) | (st->buf[13] << 16) | 53 (st->buf[14] << 8) | st->buf[15]; 54 mutex_unlock(&d->usb_mutex); 55 return ret; 56} 57 58/* expecting rx buffer: request data[0] data[1] ... data[2] */ 59static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen) 60{ 61 int status; 62 63 deb_data(">>> "); 64 debug_dump(tx, txlen, deb_data); 65 66 status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0), 67 tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen, 68 USB_CTRL_GET_TIMEOUT); 69 70 if (status != txlen) 71 deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen); 72 73 return status < 0 ? status : 0; 74} 75 76/* expecting tx buffer: request data[0] ... data[n] (n <= 4) */ 77int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen) 78{ 79 u16 index, value; 80 int status; 81 82 if (txlen < 2) { 83 err("tx buffer length is smaller than 2. Makes no sense."); 84 return -EINVAL; 85 } 86 if (txlen > 4) { 87 err("tx buffer length is larger than 4. Not supported."); 88 return -EINVAL; 89 } 90 91 deb_data(">>> "); 92 debug_dump(tx,txlen,deb_data); 93 94 value = ((txlen - 2) << 8) | tx[1]; 95 index = 0; 96 if (txlen > 2) 97 index |= (tx[2] << 8); 98 if (txlen > 3) 99 index |= tx[3]; 100 101 status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0], 102 USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen, 103 USB_CTRL_GET_TIMEOUT); 104 105 if (status < 0) 106 deb_info("ep 0 read error (status = %d)\n",status); 107 108 deb_data("<<< "); 109 debug_dump(rx, rxlen, deb_data); 110 111 return status; /* length in case of success */ 112} 113 114int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val) 115{ 116 struct dib0700_state *st = d->priv; 117 int ret; 118 119 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 120 err("could not acquire lock"); 121 return 0; 122 } 123 124 st->buf[0] = REQUEST_SET_GPIO; 125 st->buf[1] = gpio; 126 st->buf[2] = ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6); 127 128 ret = dib0700_ctrl_wr(d, st->buf, 3); 129 130 mutex_unlock(&d->usb_mutex); 131 return ret; 132} 133 134static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets) 135{ 136 struct dib0700_state *st = d->priv; 137 int ret; 138 139 if (st->fw_version >= 0x10201) { 140 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 141 err("could not acquire lock"); 142 return 0; 143 } 144 145 st->buf[0] = REQUEST_SET_USB_XFER_LEN; 146 st->buf[1] = (nb_ts_packets >> 8) & 0xff; 147 st->buf[2] = nb_ts_packets & 0xff; 148 149 deb_info("set the USB xfer len to %i Ts packet\n", nb_ts_packets); 150 151 ret = dib0700_ctrl_wr(d, st->buf, 3); 152 mutex_unlock(&d->usb_mutex); 153 } else { 154 deb_info("this firmware does not allow to change the USB xfer len\n"); 155 ret = -EIO; 156 } 157 158 return ret; 159} 160 161/* 162 * I2C master xfer function (supported in 1.20 firmware) 163 */ 164static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg, 165 int num) 166{ 167 /* The new i2c firmware messages are more reliable and in particular 168 properly support i2c read calls not preceded by a write */ 169 170 struct dvb_usb_device *d = i2c_get_adapdata(adap); 171 struct dib0700_state *st = d->priv; 172 uint8_t bus_mode = 1; /* 0=eeprom bus, 1=frontend bus */ 173 uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */ 174 uint8_t en_start = 0; 175 uint8_t en_stop = 0; 176 int result, i; 177 178 /* Ensure nobody else hits the i2c bus while we're sending our 179 sequence of messages, (such as the remote control thread) */ 180 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 181 return -EAGAIN; 182 183 for (i = 0; i < num; i++) { 184 if (i == 0) { 185 /* First message in the transaction */ 186 en_start = 1; 187 } else if (!(msg[i].flags & I2C_M_NOSTART)) { 188 /* Device supports repeated-start */ 189 en_start = 1; 190 } else { 191 /* Not the first packet and device doesn't support 192 repeated start */ 193 en_start = 0; 194 } 195 if (i == (num - 1)) { 196 /* Last message in the transaction */ 197 en_stop = 1; 198 } 199 200 if (msg[i].flags & I2C_M_RD) { 201 /* Read request */ 202 u16 index, value; 203 uint8_t i2c_dest; 204 205 i2c_dest = (msg[i].addr << 1); 206 value = ((en_start << 7) | (en_stop << 6) | 207 (msg[i].len & 0x3F)) << 8 | i2c_dest; 208 /* I2C ctrl + FE bus; */ 209 index = ((gen_mode << 6) & 0xC0) | 210 ((bus_mode << 4) & 0x30); 211 212 result = usb_control_msg(d->udev, 213 usb_rcvctrlpipe(d->udev, 0), 214 REQUEST_NEW_I2C_READ, 215 USB_TYPE_VENDOR | USB_DIR_IN, 216 value, index, msg[i].buf, 217 msg[i].len, 218 USB_CTRL_GET_TIMEOUT); 219 if (result < 0) { 220 deb_info("i2c read error (status = %d)\n", result); 221 break; 222 } 223 224 deb_data("<<< "); 225 debug_dump(msg[i].buf, msg[i].len, deb_data); 226 227 } else { 228 /* Write request */ 229 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 230 err("could not acquire lock"); 231 return 0; 232 } 233 st->buf[0] = REQUEST_NEW_I2C_WRITE; 234 st->buf[1] = msg[i].addr << 1; 235 st->buf[2] = (en_start << 7) | (en_stop << 6) | 236 (msg[i].len & 0x3F); 237 /* I2C ctrl + FE bus; */ 238 st->buf[3] = ((gen_mode << 6) & 0xC0) | 239 ((bus_mode << 4) & 0x30); 240 /* The Actual i2c payload */ 241 memcpy(&st->buf[4], msg[i].buf, msg[i].len); 242 243 deb_data(">>> "); 244 debug_dump(st->buf, msg[i].len + 4, deb_data); 245 246 result = usb_control_msg(d->udev, 247 usb_sndctrlpipe(d->udev, 0), 248 REQUEST_NEW_I2C_WRITE, 249 USB_TYPE_VENDOR | USB_DIR_OUT, 250 0, 0, st->buf, msg[i].len + 4, 251 USB_CTRL_GET_TIMEOUT); 252 mutex_unlock(&d->usb_mutex); 253 if (result < 0) { 254 deb_info("i2c write error (status = %d)\n", result); 255 break; 256 } 257 } 258 } 259 mutex_unlock(&d->i2c_mutex); 260 return i; 261} 262 263/* 264 * I2C master xfer function (pre-1.20 firmware) 265 */ 266static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap, 267 struct i2c_msg *msg, int num) 268{ 269 struct dvb_usb_device *d = i2c_get_adapdata(adap); 270 struct dib0700_state *st = d->priv; 271 int i,len; 272 273 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 274 return -EAGAIN; 275 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 276 err("could not acquire lock"); 277 return 0; 278 } 279 280 for (i = 0; i < num; i++) { 281 /* fill in the address */ 282 st->buf[1] = msg[i].addr << 1; 283 /* fill the buffer */ 284 memcpy(&st->buf[2], msg[i].buf, msg[i].len); 285 286 /* write/read request */ 287 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 288 st->buf[0] = REQUEST_I2C_READ; 289 st->buf[1] |= 1; 290 291 /* special thing in the current firmware: when length is zero the read-failed */ 292 len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2, 293 msg[i+1].buf, msg[i+1].len); 294 if (len <= 0) { 295 deb_info("I2C read failed on address 0x%02x\n", 296 msg[i].addr); 297 break; 298 } 299 300 msg[i+1].len = len; 301 302 i++; 303 } else { 304 st->buf[0] = REQUEST_I2C_WRITE; 305 if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0) 306 break; 307 } 308 } 309 mutex_unlock(&d->usb_mutex); 310 mutex_unlock(&d->i2c_mutex); 311 312 return i; 313} 314 315static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, 316 int num) 317{ 318 struct dvb_usb_device *d = i2c_get_adapdata(adap); 319 struct dib0700_state *st = d->priv; 320 321 if (st->fw_use_new_i2c_api == 1) { 322 /* User running at least fw 1.20 */ 323 return dib0700_i2c_xfer_new(adap, msg, num); 324 } else { 325 /* Use legacy calls */ 326 return dib0700_i2c_xfer_legacy(adap, msg, num); 327 } 328} 329 330static u32 dib0700_i2c_func(struct i2c_adapter *adapter) 331{ 332 return I2C_FUNC_I2C; 333} 334 335struct i2c_algorithm dib0700_i2c_algo = { 336 .master_xfer = dib0700_i2c_xfer, 337 .functionality = dib0700_i2c_func, 338}; 339 340int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props, 341 struct dvb_usb_device_description **desc, int *cold) 342{ 343 s16 ret; 344 u8 *b; 345 346 b = kmalloc(16, GFP_KERNEL); 347 if (!b) 348 return -ENOMEM; 349 350 351 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 352 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT); 353 354 deb_info("FW GET_VERSION length: %d\n",ret); 355 356 *cold = ret <= 0; 357 deb_info("cold: %d\n", *cold); 358 359 kfree(b); 360 return 0; 361} 362 363static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll, 364 u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv, 365 u16 pll_loopdiv, u16 free_div, u16 dsuScaler) 366{ 367 struct dib0700_state *st = d->priv; 368 int ret; 369 370 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 371 err("could not acquire lock"); 372 return 0; 373 } 374 375 st->buf[0] = REQUEST_SET_CLOCK; 376 st->buf[1] = (en_pll << 7) | (pll_src << 6) | 377 (pll_range << 5) | (clock_gpio3 << 4); 378 st->buf[2] = (pll_prediv >> 8) & 0xff; /* MSB */ 379 st->buf[3] = pll_prediv & 0xff; /* LSB */ 380 st->buf[4] = (pll_loopdiv >> 8) & 0xff; /* MSB */ 381 st->buf[5] = pll_loopdiv & 0xff; /* LSB */ 382 st->buf[6] = (free_div >> 8) & 0xff; /* MSB */ 383 st->buf[7] = free_div & 0xff; /* LSB */ 384 st->buf[8] = (dsuScaler >> 8) & 0xff; /* MSB */ 385 st->buf[9] = dsuScaler & 0xff; /* LSB */ 386 387 ret = dib0700_ctrl_wr(d, st->buf, 10); 388 mutex_unlock(&d->usb_mutex); 389 390 return ret; 391} 392 393int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz) 394{ 395 struct dib0700_state *st = d->priv; 396 u16 divider; 397 int ret; 398 399 if (scl_kHz == 0) 400 return -EINVAL; 401 402 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 403 err("could not acquire lock"); 404 return 0; 405 } 406 407 st->buf[0] = REQUEST_SET_I2C_PARAM; 408 divider = (u16) (30000 / scl_kHz); 409 st->buf[1] = 0; 410 st->buf[2] = (u8) (divider >> 8); 411 st->buf[3] = (u8) (divider & 0xff); 412 divider = (u16) (72000 / scl_kHz); 413 st->buf[4] = (u8) (divider >> 8); 414 st->buf[5] = (u8) (divider & 0xff); 415 divider = (u16) (72000 / scl_kHz); /* clock: 72MHz */ 416 st->buf[6] = (u8) (divider >> 8); 417 st->buf[7] = (u8) (divider & 0xff); 418 419 deb_info("setting I2C speed: %04x %04x %04x (%d kHz).", 420 (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) | 421 st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz); 422 423 ret = dib0700_ctrl_wr(d, st->buf, 8); 424 mutex_unlock(&d->usb_mutex); 425 426 return ret; 427} 428 429 430int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3) 431{ 432 switch (clk_MHz) { 433 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break; 434 default: return -EINVAL; 435 } 436 return 0; 437} 438 439static int dib0700_jumpram(struct usb_device *udev, u32 address) 440{ 441 int ret = 0, actlen; 442 u8 *buf; 443 444 buf = kmalloc(8, GFP_KERNEL); 445 if (!buf) 446 return -ENOMEM; 447 buf[0] = REQUEST_JUMPRAM; 448 buf[1] = 0; 449 buf[2] = 0; 450 buf[3] = 0; 451 buf[4] = (address >> 24) & 0xff; 452 buf[5] = (address >> 16) & 0xff; 453 buf[6] = (address >> 8) & 0xff; 454 buf[7] = address & 0xff; 455 456 if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) { 457 deb_fw("jumpram to 0x%x failed\n",address); 458 goto out; 459 } 460 if (actlen != 8) { 461 deb_fw("jumpram to 0x%x failed\n",address); 462 ret = -EIO; 463 goto out; 464 } 465out: 466 kfree(buf); 467 return ret; 468} 469 470int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw) 471{ 472 struct hexline hx; 473 int pos = 0, ret, act_len, i, adap_num; 474 u8 *buf; 475 u32 fw_version; 476 477 buf = kmalloc(260, GFP_KERNEL); 478 if (!buf) 479 return -ENOMEM; 480 481 while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) { 482 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n", 483 hx.addr, hx.len, hx.chk); 484 485 buf[0] = hx.len; 486 buf[1] = (hx.addr >> 8) & 0xff; 487 buf[2] = hx.addr & 0xff; 488 buf[3] = hx.type; 489 memcpy(&buf[4],hx.data,hx.len); 490 buf[4+hx.len] = hx.chk; 491 492 ret = usb_bulk_msg(udev, 493 usb_sndbulkpipe(udev, 0x01), 494 buf, 495 hx.len + 5, 496 &act_len, 497 1000); 498 499 if (ret < 0) { 500 err("firmware download failed at %d with %d",pos,ret); 501 goto out; 502 } 503 } 504 505 if (ret == 0) { 506 /* start the firmware */ 507 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) { 508 info("firmware started successfully."); 509 msleep(500); 510 } 511 } else 512 ret = -EIO; 513 514 /* the number of ts packet has to be at least 1 */ 515 if (nb_packet_buffer_size < 1) 516 nb_packet_buffer_size = 1; 517 518 /* get the fimware version */ 519 usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 520 REQUEST_GET_VERSION, 521 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, 522 buf, 16, USB_CTRL_GET_TIMEOUT); 523 fw_version = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11]; 524 525 /* set the buffer size - DVB-USB is allocating URB buffers 526 * only after the firwmare download was successful */ 527 for (i = 0; i < dib0700_device_count; i++) { 528 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters; 529 adap_num++) { 530 if (fw_version >= 0x10201) { 531 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 188*nb_packet_buffer_size; 532 } else { 533 /* for fw version older than 1.20.1, 534 * the buffersize has to be n times 512 */ 535 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512; 536 if (dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize < 512) 537 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 512; 538 } 539 } 540 } 541out: 542 kfree(buf); 543 return ret; 544} 545 546int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) 547{ 548 struct dib0700_state *st = adap->dev->priv; 549 int ret; 550 551 if ((onoff != 0) && (st->fw_version >= 0x10201)) { 552 /* for firmware later than 1.20.1, 553 * the USB xfer length can be set */ 554 ret = dib0700_set_usb_xfer_len(adap->dev, 555 st->nb_packet_buffer_size); 556 if (ret < 0) { 557 deb_info("can not set the USB xfer len\n"); 558 return ret; 559 } 560 } 561 562 if (mutex_lock_interruptible(&adap->dev->usb_mutex) < 0) { 563 err("could not acquire lock"); 564 return 0; 565 } 566 567 st->buf[0] = REQUEST_ENABLE_VIDEO; 568 /* this bit gives a kind of command, 569 * rather than enabling something or not */ 570 st->buf[1] = (onoff << 4) | 0x00; 571 572 if (st->disable_streaming_master_mode == 1) 573 st->buf[2] = 0x00; 574 else 575 st->buf[2] = 0x01 << 4; /* Master mode */ 576 577 st->buf[3] = 0x00; 578 579 deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id); 580 581 st->channel_state &= ~0x3; 582 if ((adap->fe_adap[0].stream.props.endpoint != 2) 583 && (adap->fe_adap[0].stream.props.endpoint != 3)) { 584 deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint); 585 if (onoff) 586 st->channel_state |= 1 << (adap->id); 587 else 588 st->channel_state |= 1 << ~(adap->id); 589 } else { 590 if (onoff) 591 st->channel_state |= 1 << (adap->fe_adap[0].stream.props.endpoint-2); 592 else 593 st->channel_state |= 1 << (3-adap->fe_adap[0].stream.props.endpoint); 594 } 595 596 st->buf[2] |= st->channel_state; 597 598 deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]); 599 600 ret = dib0700_ctrl_wr(adap->dev, st->buf, 4); 601 mutex_unlock(&adap->dev->usb_mutex); 602 603 return ret; 604} 605 606int dib0700_change_protocol(struct rc_dev *rc, u64 rc_type) 607{ 608 struct dvb_usb_device *d = rc->priv; 609 struct dib0700_state *st = d->priv; 610 int new_proto, ret; 611 612 if (mutex_lock_interruptible(&d->usb_mutex) < 0) { 613 err("could not acquire lock"); 614 return 0; 615 } 616 617 st->buf[0] = REQUEST_SET_RC; 618 st->buf[1] = 0; 619 st->buf[2] = 0; 620 621 /* Set the IR mode */ 622 if (rc_type == RC_TYPE_RC5) 623 new_proto = 1; 624 else if (rc_type == RC_TYPE_NEC) 625 new_proto = 0; 626 else if (rc_type == RC_TYPE_RC6) { 627 if (st->fw_version < 0x10200) { 628 ret = -EINVAL; 629 goto out; 630 } 631 632 new_proto = 2; 633 } else { 634 ret = -EINVAL; 635 goto out; 636 } 637 638 st->buf[1] = new_proto; 639 640 ret = dib0700_ctrl_wr(d, st->buf, 3); 641 if (ret < 0) { 642 err("ir protocol setup failed"); 643 goto out; 644 } 645 646 d->props.rc.core.protocol = rc_type; 647 648out: 649 mutex_unlock(&d->usb_mutex); 650 return ret; 651} 652 653/* Number of keypresses to ignore before start repeating */ 654#define RC_REPEAT_DELAY_V1_20 10 655 656/* This is the structure of the RC response packet starting in firmware 1.20 */ 657struct dib0700_rc_response { 658 u8 report_id; 659 u8 data_state; 660 union { 661 u16 system16; 662 struct { 663 u8 not_system; 664 u8 system; 665 }; 666 }; 667 u8 data; 668 u8 not_data; 669}; 670#define RC_MSG_SIZE_V1_20 6 671 672static void dib0700_rc_urb_completion(struct urb *purb) 673{ 674 struct dvb_usb_device *d = purb->context; 675 struct dib0700_rc_response *poll_reply; 676 u32 uninitialized_var(keycode); 677 u8 toggle; 678 679 deb_info("%s()\n", __func__); 680 if (d == NULL) 681 return; 682 683 if (d->rc_dev == NULL) { 684 /* This will occur if disable_rc_polling=1 */ 685 usb_free_urb(purb); 686 return; 687 } 688 689 poll_reply = purb->transfer_buffer; 690 691 if (purb->status < 0) { 692 deb_info("discontinuing polling\n"); 693 usb_free_urb(purb); 694 return; 695 } 696 697 if (purb->actual_length != RC_MSG_SIZE_V1_20) { 698 deb_info("malformed rc msg size=%d\n", purb->actual_length); 699 goto resubmit; 700 } 701 702 deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n", 703 poll_reply->report_id, poll_reply->data_state, 704 poll_reply->system, poll_reply->not_system, 705 poll_reply->data, poll_reply->not_data, 706 purb->actual_length); 707 708 switch (d->props.rc.core.protocol) { 709 case RC_TYPE_NEC: 710 toggle = 0; 711 712 /* NEC protocol sends repeat code as 0 0 0 FF */ 713 if ((poll_reply->system == 0x00) && (poll_reply->data == 0x00) 714 && (poll_reply->not_data == 0xff)) { 715 poll_reply->data_state = 2; 716 break; 717 } 718 719 if ((poll_reply->system ^ poll_reply->not_system) != 0xff) { 720 deb_data("NEC extended protocol\n"); 721 /* NEC extended code - 24 bits */ 722 keycode = be16_to_cpu(poll_reply->system16) << 8 | poll_reply->data; 723 } else { 724 deb_data("NEC normal protocol\n"); 725 /* normal NEC code - 16 bits */ 726 keycode = poll_reply->system << 8 | poll_reply->data; 727 } 728 729 break; 730 default: 731 deb_data("RC5 protocol\n"); 732 /* RC5 Protocol */ 733 toggle = poll_reply->report_id; 734 keycode = poll_reply->system << 8 | poll_reply->data; 735 736 break; 737 } 738 739 if ((poll_reply->data + poll_reply->not_data) != 0xff) { 740 /* Key failed integrity check */ 741 err("key failed integrity check: %04x %02x %02x", 742 poll_reply->system, 743 poll_reply->data, poll_reply->not_data); 744 goto resubmit; 745 } 746 747 rc_keydown(d->rc_dev, keycode, toggle); 748 749resubmit: 750 /* Clean the buffer before we requeue */ 751 memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20); 752 753 /* Requeue URB */ 754 usb_submit_urb(purb, GFP_ATOMIC); 755} 756 757int dib0700_rc_setup(struct dvb_usb_device *d) 758{ 759 struct dib0700_state *st = d->priv; 760 struct urb *purb; 761 int ret; 762 763 /* Poll-based. Don't initialize bulk mode */ 764 if (st->fw_version < 0x10200) 765 return 0; 766 767 /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */ 768 purb = usb_alloc_urb(0, GFP_KERNEL); 769 if (purb == NULL) { 770 err("rc usb alloc urb failed\n"); 771 return -ENOMEM; 772 } 773 774 purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL); 775 if (purb->transfer_buffer == NULL) { 776 err("rc kzalloc failed\n"); 777 usb_free_urb(purb); 778 return -ENOMEM; 779 } 780 781 purb->status = -EINPROGRESS; 782 usb_fill_bulk_urb(purb, d->udev, usb_rcvbulkpipe(d->udev, 1), 783 purb->transfer_buffer, RC_MSG_SIZE_V1_20, 784 dib0700_rc_urb_completion, d); 785 786 ret = usb_submit_urb(purb, GFP_ATOMIC); 787 if (ret) 788 err("rc submit urb failed\n"); 789 790 return ret; 791} 792 793static int dib0700_probe(struct usb_interface *intf, 794 const struct usb_device_id *id) 795{ 796 int i; 797 struct dvb_usb_device *dev; 798 799 for (i = 0; i < dib0700_device_count; i++) 800 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, 801 &dev, adapter_nr) == 0) { 802 struct dib0700_state *st = dev->priv; 803 u32 hwversion, romversion, fw_version, fwtype; 804 805 dib0700_get_version(dev, &hwversion, &romversion, 806 &fw_version, &fwtype); 807 808 deb_info("Firmware version: %x, %d, 0x%x, %d\n", 809 hwversion, romversion, fw_version, fwtype); 810 811 st->fw_version = fw_version; 812 st->nb_packet_buffer_size = (u32)nb_packet_buffer_size; 813 814 /* Disable polling mode on newer firmwares */ 815 if (st->fw_version >= 0x10200) 816 dev->props.rc.core.bulk_mode = true; 817 else 818 dev->props.rc.core.bulk_mode = false; 819 820 dib0700_rc_setup(dev); 821 822 return 0; 823 } 824 825 return -ENODEV; 826} 827 828static struct usb_driver dib0700_driver = { 829 .name = "dvb_usb_dib0700", 830 .probe = dib0700_probe, 831 .disconnect = dvb_usb_device_exit, 832 .id_table = dib0700_usb_id_table, 833}; 834 835module_usb_driver(dib0700_driver); 836 837MODULE_FIRMWARE("dvb-usb-dib0700-1.20.fw"); 838MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>"); 839MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge"); 840MODULE_VERSION("1.0"); 841MODULE_LICENSE("GPL"); 842