drivers/media/usb/dvb-usb/dib0700_core.c

   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 */
  12 int dvb_usb_dib0700_debug;
  13 module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
  14 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
  15
  16 static int nb_packet_buffer_size = 21;
  17 module_param(nb_packet_buffer_size, int, 0644);
  18 MODULE_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
  24 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  25
  26
  27 int 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 -EINTR;
  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] */
  59 static 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) */
  77 int 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
 114 int 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 -EINTR;
 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
 134 static 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 -EINTR;
 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  */
 164 static 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 -EINTR;
 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, st->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                         if (msg[i].len > sizeof(st->buf)) {
 225                                 deb_info("buffer too small to fit %d bytes\n",
 226                                          msg[i].len);
 227                                 return -EIO;
 228                         }
 229
 230                         memcpy(msg[i].buf, st->buf, msg[i].len);
 231
 232                         deb_data("<<< ");
 233                         debug_dump(msg[i].buf, msg[i].len, deb_data);
 234
 235                 } else {
 236                         /* Write request */
 237                         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 238                                 err("could not acquire lock");
 239                                 mutex_unlock(&d->i2c_mutex);
 240                                 return -EINTR;
 241                         }
 242                         st->buf[0] = REQUEST_NEW_I2C_WRITE;
 243                         st->buf[1] = msg[i].addr << 1;
 244                         st->buf[2] = (en_start << 7) | (en_stop << 6) |
 245                                 (msg[i].len & 0x3F);
 246                         /* I2C ctrl + FE bus; */
 247                         st->buf[3] = ((gen_mode << 6) & 0xC0) |
 248                                  ((bus_mode << 4) & 0x30);
 249
 250                         if (msg[i].len > sizeof(st->buf) - 4) {
 251                                 deb_info("i2c message to big: %d\n",
 252                                          msg[i].len);
 253                                 return -EIO;
 254                         }
 255
 256                         /* The Actual i2c payload */
 257                         memcpy(&st->buf[4], msg[i].buf, msg[i].len);
 258
 259                         deb_data(">>> ");
 260                         debug_dump(st->buf, msg[i].len + 4, deb_data);
 261
 262                         result = usb_control_msg(d->udev,
 263                                                  usb_sndctrlpipe(d->udev, 0),
 264                                                  REQUEST_NEW_I2C_WRITE,
 265                                                  USB_TYPE_VENDOR | USB_DIR_OUT,
 266                                                  0, 0, st->buf, msg[i].len + 4,
 267                                                  USB_CTRL_GET_TIMEOUT);
 268                         mutex_unlock(&d->usb_mutex);
 269                         if (result < 0) {
 270                                 deb_info("i2c write error (status = %d)\n", result);
 271                                 break;
 272                         }
 273                 }
 274         }
 275         mutex_unlock(&d->i2c_mutex);
 276         return i;
 277 }
 278
 279 /*
 280  * I2C master xfer function (pre-1.20 firmware)
 281  */
 282 static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
 283                                    struct i2c_msg *msg, int num)
 284 {
 285         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 286         struct dib0700_state *st = d->priv;
 287         int i,len;
 288
 289         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 290                 return -EINTR;
 291         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 292                 err("could not acquire lock");
 293                 mutex_unlock(&d->i2c_mutex);
 294                 return -EINTR;
 295         }
 296
 297         for (i = 0; i < num; i++) {
 298                 /* fill in the address */
 299                 st->buf[1] = msg[i].addr << 1;
 300                 /* fill the buffer */
 301                 if (msg[i].len > sizeof(st->buf) - 2) {
 302                         deb_info("i2c xfer to big: %d\n",
 303                                 msg[i].len);
 304                         return -EIO;
 305                 }
 306                 memcpy(&st->buf[2], msg[i].buf, msg[i].len);
 307
 308                 /* write/read request */
 309                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 310                         st->buf[0] = REQUEST_I2C_READ;
 311                         st->buf[1] |= 1;
 312
 313                         /* special thing in the current firmware: when length is zero the read-failed */
 314                         len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2,
 315                                               st->buf, msg[i + 1].len);
 316                         if (len <= 0) {
 317                                 deb_info("I2C read failed on address 0x%02x\n",
 318                                                 msg[i].addr);
 319                                 break;
 320                         }
 321
 322                         if (msg[i + 1].len > sizeof(st->buf)) {
 323                                 deb_info("i2c xfer buffer to small for %d\n",
 324                                         msg[i].len);
 325                                 return -EIO;
 326                         }
 327                         memcpy(msg[i + 1].buf, st->buf, msg[i + 1].len);
 328
 329                         msg[i+1].len = len;
 330
 331                         i++;
 332                 } else {
 333                         st->buf[0] = REQUEST_I2C_WRITE;
 334                         if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0)
 335                                 break;
 336                 }
 337         }
 338         mutex_unlock(&d->usb_mutex);
 339         mutex_unlock(&d->i2c_mutex);
 340
 341         return i;
 342 }
 343
 344 static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 345                             int num)
 346 {
 347         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 348         struct dib0700_state *st = d->priv;
 349
 350         if (st->fw_use_new_i2c_api == 1) {
 351                 /* User running at least fw 1.20 */
 352                 return dib0700_i2c_xfer_new(adap, msg, num);
 353         } else {
 354                 /* Use legacy calls */
 355                 return dib0700_i2c_xfer_legacy(adap, msg, num);
 356         }
 357 }
 358
 359 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
 360 {
 361         return I2C_FUNC_I2C;
 362 }
 363
 364 struct i2c_algorithm dib0700_i2c_algo = {
 365         .master_xfer   = dib0700_i2c_xfer,
 366         .functionality = dib0700_i2c_func,
 367 };
 368
 369 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
 370                         struct dvb_usb_device_description **desc, int *cold)
 371 {
 372         s16 ret;
 373         u8 *b;
 374
 375         b = kmalloc(16, GFP_KERNEL);
 376         if (!b)
 377                 return  -ENOMEM;
 378
 379
 380         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 381                 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
 382
 383         deb_info("FW GET_VERSION length: %d\n",ret);
 384
 385         *cold = ret <= 0;
 386         deb_info("cold: %d\n", *cold);
 387
 388         kfree(b);
 389         return 0;
 390 }
 391
 392 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
 393         u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
 394         u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
 395 {
 396         struct dib0700_state *st = d->priv;
 397         int ret;
 398
 399         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 400                 err("could not acquire lock");
 401                 return -EINTR;
 402         }
 403
 404         st->buf[0] = REQUEST_SET_CLOCK;
 405         st->buf[1] = (en_pll << 7) | (pll_src << 6) |
 406                 (pll_range << 5) | (clock_gpio3 << 4);
 407         st->buf[2] = (pll_prediv >> 8)  & 0xff; /* MSB */
 408         st->buf[3] =  pll_prediv        & 0xff; /* LSB */
 409         st->buf[4] = (pll_loopdiv >> 8) & 0xff; /* MSB */
 410         st->buf[5] =  pll_loopdiv       & 0xff; /* LSB */
 411         st->buf[6] = (free_div >> 8)    & 0xff; /* MSB */
 412         st->buf[7] =  free_div          & 0xff; /* LSB */
 413         st->buf[8] = (dsuScaler >> 8)   & 0xff; /* MSB */
 414         st->buf[9] =  dsuScaler         & 0xff; /* LSB */
 415
 416         ret = dib0700_ctrl_wr(d, st->buf, 10);
 417         mutex_unlock(&d->usb_mutex);
 418
 419         return ret;
 420 }
 421
 422 int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
 423 {
 424         struct dib0700_state *st = d->priv;
 425         u16 divider;
 426         int ret;
 427
 428         if (scl_kHz == 0)
 429                 return -EINVAL;
 430
 431         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 432                 err("could not acquire lock");
 433                 return -EINTR;
 434         }
 435
 436         st->buf[0] = REQUEST_SET_I2C_PARAM;
 437         divider = (u16) (30000 / scl_kHz);
 438         st->buf[1] = 0;
 439         st->buf[2] = (u8) (divider >> 8);
 440         st->buf[3] = (u8) (divider & 0xff);
 441         divider = (u16) (72000 / scl_kHz);
 442         st->buf[4] = (u8) (divider >> 8);
 443         st->buf[5] = (u8) (divider & 0xff);
 444         divider = (u16) (72000 / scl_kHz); /* clock: 72MHz */
 445         st->buf[6] = (u8) (divider >> 8);
 446         st->buf[7] = (u8) (divider & 0xff);
 447
 448         deb_info("setting I2C speed: %04x %04x %04x (%d kHz).",
 449                 (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) |
 450                 st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz);
 451
 452         ret = dib0700_ctrl_wr(d, st->buf, 8);
 453         mutex_unlock(&d->usb_mutex);
 454
 455         return ret;
 456 }
 457
 458
 459 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
 460 {
 461         switch (clk_MHz) {
 462                 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
 463                 default: return -EINVAL;
 464         }
 465         return 0;
 466 }
 467
 468 static int dib0700_jumpram(struct usb_device *udev, u32 address)
 469 {
 470         int ret = 0, actlen;
 471         u8 *buf;
 472
 473         buf = kmalloc(8, GFP_KERNEL);
 474         if (!buf)
 475                 return -ENOMEM;
 476         buf[0] = REQUEST_JUMPRAM;
 477         buf[1] = 0;
 478         buf[2] = 0;
 479         buf[3] = 0;
 480         buf[4] = (address >> 24) & 0xff;
 481         buf[5] = (address >> 16) & 0xff;
 482         buf[6] = (address >> 8)  & 0xff;
 483         buf[7] =  address        & 0xff;
 484
 485         if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
 486                 deb_fw("jumpram to 0x%x failed\n",address);
 487                 goto out;
 488         }
 489         if (actlen != 8) {
 490                 deb_fw("jumpram to 0x%x failed\n",address);
 491                 ret = -EIO;
 492                 goto out;
 493         }
 494 out:
 495         kfree(buf);
 496         return ret;
 497 }
 498
 499 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
 500 {
 501         struct hexline hx;
 502         int pos = 0, ret, act_len, i, adap_num;
 503         u8 *buf;
 504         u32 fw_version;
 505
 506         buf = kmalloc(260, GFP_KERNEL);
 507         if (!buf)
 508                 return -ENOMEM;
 509
 510         while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
 511                 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",
 512                                 hx.addr, hx.len, hx.chk);
 513
 514                 buf[0] = hx.len;
 515                 buf[1] = (hx.addr >> 8) & 0xff;
 516                 buf[2] =  hx.addr       & 0xff;
 517                 buf[3] = hx.type;
 518                 memcpy(&buf[4],hx.data,hx.len);
 519                 buf[4+hx.len] = hx.chk;
 520
 521                 ret = usb_bulk_msg(udev,
 522                         usb_sndbulkpipe(udev, 0x01),
 523                         buf,
 524                         hx.len + 5,
 525                         &act_len,
 526                         1000);
 527
 528                 if (ret < 0) {
 529                         err("firmware download failed at %d with %d",pos,ret);
 530                         goto out;
 531                 }
 532         }
 533
 534         if (ret == 0) {
 535                 /* start the firmware */
 536                 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
 537                         info("firmware started successfully.");
 538                         msleep(500);
 539                 }
 540         } else
 541                 ret = -EIO;
 542
 543         /* the number of ts packet has to be at least 1 */
 544         if (nb_packet_buffer_size < 1)
 545                 nb_packet_buffer_size = 1;
 546
 547         /* get the firmware version */
 548         usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 549                                   REQUEST_GET_VERSION,
 550                                   USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 551                                   buf, 16, USB_CTRL_GET_TIMEOUT);
 552         fw_version = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11];
 553
 554         /* set the buffer size - DVB-USB is allocating URB buffers
 555          * only after the firwmare download was successful */
 556         for (i = 0; i < dib0700_device_count; i++) {
 557                 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters;
 558                                 adap_num++) {
 559                         if (fw_version >= 0x10201) {
 560                                 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 188*nb_packet_buffer_size;
 561                         } else {
 562                                 /* for fw version older than 1.20.1,
 563                                  * the buffersize has to be n times 512 */
 564                                 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512;
 565                                 if (dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize < 512)
 566                                         dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 512;
 567                         }
 568                 }
 569         }
 570 out:
 571         kfree(buf);
 572         return ret;
 573 }
 574
 575 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 576 {
 577         struct dib0700_state *st = adap->dev->priv;
 578         int ret;
 579
 580         if ((onoff != 0) && (st->fw_version >= 0x10201)) {
 581                 /* for firmware later than 1.20.1,
 582                  * the USB xfer length can be set  */
 583                 ret = dib0700_set_usb_xfer_len(adap->dev,
 584                         st->nb_packet_buffer_size);
 585                 if (ret < 0) {
 586                         deb_info("can not set the USB xfer len\n");
 587                         return ret;
 588                 }
 589         }
 590
 591         mutex_lock(&adap->dev->usb_mutex);
 592
 593         st->buf[0] = REQUEST_ENABLE_VIDEO;
 594         /* this bit gives a kind of command,
 595          * rather than enabling something or not */
 596         st->buf[1] = (onoff << 4) | 0x00;
 597
 598         if (st->disable_streaming_master_mode == 1)
 599                 st->buf[2] = 0x00;
 600         else
 601                 st->buf[2] = 0x01 << 4; /* Master mode */
 602
 603         st->buf[3] = 0x00;
 604
 605         deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
 606
 607         st->channel_state &= ~0x3;
 608         if ((adap->fe_adap[0].stream.props.endpoint != 2)
 609                         && (adap->fe_adap[0].stream.props.endpoint != 3)) {
 610                 deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
 611                 if (onoff)
 612                         st->channel_state |=    1 << (adap->id);
 613                 else
 614                         st->channel_state |=    1 << ~(adap->id);
 615         } else {
 616                 if (onoff)
 617                         st->channel_state |=    1 << (adap->fe_adap[0].stream.props.endpoint-2);
 618                 else
 619                         st->channel_state |=    1 << (3-adap->fe_adap[0].stream.props.endpoint);
 620         }
 621
 622         st->buf[2] |= st->channel_state;
 623
 624         deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
 625
 626         ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
 627         mutex_unlock(&adap->dev->usb_mutex);
 628
 629         return ret;
 630 }
 631
 632 int dib0700_change_protocol(struct rc_dev *rc, u64 *rc_type)
 633 {
 634         struct dvb_usb_device *d = rc->priv;
 635         struct dib0700_state *st = d->priv;
 636         int new_proto, ret;
 637
 638         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 639                 err("could not acquire lock");
 640                 return -EINTR;
 641         }
 642
 643         st->buf[0] = REQUEST_SET_RC;
 644         st->buf[1] = 0;
 645         st->buf[2] = 0;
 646
 647         /* Set the IR mode */
 648         if (*rc_type & RC_BIT_RC5) {
 649                 new_proto = 1;
 650                 *rc_type = RC_BIT_RC5;
 651         } else if (*rc_type & RC_BIT_NEC) {
 652                 new_proto = 0;
 653                 *rc_type = RC_BIT_NEC;
 654         } else if (*rc_type & RC_BIT_RC6_MCE) {
 655                 if (st->fw_version < 0x10200) {
 656                         ret = -EINVAL;
 657                         goto out;
 658                 }
 659                 new_proto = 2;
 660                 *rc_type = RC_BIT_RC6_MCE;
 661         } else {
 662                 ret = -EINVAL;
 663                 goto out;
 664         }
 665
 666         st->buf[1] = new_proto;
 667
 668         ret = dib0700_ctrl_wr(d, st->buf, 3);
 669         if (ret < 0) {
 670                 err("ir protocol setup failed");
 671                 goto out;
 672         }
 673
 674         d->props.rc.core.protocol = *rc_type;
 675
 676 out:
 677         mutex_unlock(&d->usb_mutex);
 678         return ret;
 679 }
 680
 681 /* This is the structure of the RC response packet starting in firmware 1.20 */
 682 struct dib0700_rc_response {
 683         u8 report_id;
 684         u8 data_state;
 685         union {
 686                 struct {
 687                         u8 system;
 688                         u8 not_system;
 689                         u8 data;
 690                         u8 not_data;
 691                 } nec;
 692                 struct {
 693                         u8 not_used;
 694                         u8 system;
 695                         u8 data;
 696                         u8 not_data;
 697                 } rc5;
 698         };
 699 };
 700 #define RC_MSG_SIZE_V1_20 6
 701
 702 static void dib0700_rc_urb_completion(struct urb *purb)
 703 {
 704         struct dvb_usb_device *d = purb->context;
 705         struct dib0700_rc_response *poll_reply;
 706         enum rc_type protocol;
 707         u32 keycode;
 708         u8 toggle;
 709
 710         deb_info("%s()\n", __func__);
 711         if (d->rc_dev == NULL) {
 712                 /* This will occur if disable_rc_polling=1 */
 713                 kfree(purb->transfer_buffer);
 714                 usb_free_urb(purb);
 715                 return;
 716         }
 717
 718         poll_reply = purb->transfer_buffer;
 719
 720         if (purb->status < 0) {
 721                 deb_info("discontinuing polling\n");
 722                 kfree(purb->transfer_buffer);
 723                 usb_free_urb(purb);
 724                 return;
 725         }
 726
 727         if (purb->actual_length != RC_MSG_SIZE_V1_20) {
 728                 deb_info("malformed rc msg size=%d\n", purb->actual_length);
 729                 goto resubmit;
 730         }
 731
 732         deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n",
 733                  poll_reply->report_id, poll_reply->data_state,
 734                  poll_reply->nec.system, poll_reply->nec.not_system,
 735                  poll_reply->nec.data, poll_reply->nec.not_data,
 736                  purb->actual_length);
 737
 738         switch (d->props.rc.core.protocol) {
 739         case RC_BIT_NEC:
 740                 toggle = 0;
 741
 742                 /* NEC protocol sends repeat code as 0 0 0 FF */
 743                 if (poll_reply->nec.system     == 0x00 &&
 744                     poll_reply->nec.not_system == 0x00 &&
 745                     poll_reply->nec.data       == 0x00 &&
 746                     poll_reply->nec.not_data   == 0xff) {
 747                         poll_reply->data_state = 2;
 748                         rc_repeat(d->rc_dev);
 749                         goto resubmit;
 750                 }
 751
 752                 if ((poll_reply->nec.data ^ poll_reply->nec.not_data) != 0xff) {
 753                         deb_data("NEC32 protocol\n");
 754                         keycode = RC_SCANCODE_NEC32(poll_reply->nec.system     << 24 |
 755                                                      poll_reply->nec.not_system << 16 |
 756                                                      poll_reply->nec.data       << 8  |
 757                                                      poll_reply->nec.not_data);
 758                         protocol = RC_TYPE_NEC32;
 759                 } else if ((poll_reply->nec.system ^ poll_reply->nec.not_system) != 0xff) {
 760                         deb_data("NEC extended protocol\n");
 761                         keycode = RC_SCANCODE_NECX(poll_reply->nec.system << 8 |
 762                                                     poll_reply->nec.not_system,
 763                                                     poll_reply->nec.data);
 764
 765                         protocol = RC_TYPE_NECX;
 766                 } else {
 767                         deb_data("NEC normal protocol\n");
 768                         keycode = RC_SCANCODE_NEC(poll_reply->nec.system,
 769                                                    poll_reply->nec.data);
 770                         protocol = RC_TYPE_NEC;
 771                 }
 772
 773                 break;
 774         default:
 775                 deb_data("RC5 protocol\n");
 776                 protocol = RC_TYPE_RC5;
 777                 toggle = poll_reply->report_id;
 778                 keycode = RC_SCANCODE_RC5(poll_reply->rc5.system, poll_reply->rc5.data);
 779
 780                 if ((poll_reply->rc5.data ^ poll_reply->rc5.not_data) != 0xff) {
 781                         /* Key failed integrity check */
 782                         err("key failed integrity check: %02x %02x %02x %02x",
 783                             poll_reply->rc5.not_used, poll_reply->rc5.system,
 784                             poll_reply->rc5.data, poll_reply->rc5.not_data);
 785                         goto resubmit;
 786                 }
 787
 788                 break;
 789         }
 790
 791         rc_keydown(d->rc_dev, protocol, keycode, toggle);
 792
 793 resubmit:
 794         /* Clean the buffer before we requeue */
 795         memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20);
 796
 797         /* Requeue URB */
 798         usb_submit_urb(purb, GFP_ATOMIC);
 799 }
 800
 801 int dib0700_rc_setup(struct dvb_usb_device *d, struct usb_interface *intf)
 802 {
 803         struct dib0700_state *st = d->priv;
 804         struct urb *purb;
 805         const struct usb_endpoint_descriptor *e;
 806         int ret, rc_ep = 1;
 807         unsigned int pipe = 0;
 808
 809         /* Poll-based. Don't initialize bulk mode */
 810         if (st->fw_version < 0x10200 || !intf)
 811                 return 0;
 812
 813         /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
 814
 815         if (intf->altsetting[0].desc.bNumEndpoints < rc_ep + 1)
 816                 return -ENODEV;
 817
 818         purb = usb_alloc_urb(0, GFP_KERNEL);
 819         if (purb == NULL)
 820                 return -ENOMEM;
 821
 822         purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
 823         if (purb->transfer_buffer == NULL) {
 824                 err("rc kzalloc failed");
 825                 usb_free_urb(purb);
 826                 return -ENOMEM;
 827         }
 828
 829         purb->status = -EINPROGRESS;
 830
 831         /*
 832          * Some devices like the Hauppauge NovaTD model 52009 use an interrupt
 833          * endpoint, while others use a bulk one.
 834          */
 835         e = &intf->altsetting[0].endpoint[rc_ep].desc;
 836         if (usb_endpoint_dir_in(e)) {
 837                 if (usb_endpoint_xfer_bulk(e)) {
 838                         pipe = usb_rcvbulkpipe(d->udev, rc_ep);
 839                         usb_fill_bulk_urb(purb, d->udev, pipe,
 840                                           purb->transfer_buffer,
 841                                           RC_MSG_SIZE_V1_20,
 842                                           dib0700_rc_urb_completion, d);
 843
 844                 } else if (usb_endpoint_xfer_int(e)) {
 845                         pipe = usb_rcvintpipe(d->udev, rc_ep);
 846                         usb_fill_int_urb(purb, d->udev, pipe,
 847                                           purb->transfer_buffer,
 848                                           RC_MSG_SIZE_V1_20,
 849                                           dib0700_rc_urb_completion, d, 1);
 850                 }
 851         }
 852
 853         if (!pipe) {
 854                 err("There's no endpoint for remote controller");
 855                 kfree(purb->transfer_buffer);
 856                 usb_free_urb(purb);
 857                 return 0;
 858         }
 859
 860         ret = usb_submit_urb(purb, GFP_ATOMIC);
 861         if (ret) {
 862                 err("rc submit urb failed");
 863                 kfree(purb->transfer_buffer);
 864                 usb_free_urb(purb);
 865         }
 866
 867         return ret;
 868 }
 869
 870 static int dib0700_probe(struct usb_interface *intf,
 871                 const struct usb_device_id *id)
 872 {
 873         int i;
 874         struct dvb_usb_device *dev;
 875
 876         for (i = 0; i < dib0700_device_count; i++)
 877                 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
 878                     &dev, adapter_nr) == 0) {
 879                         struct dib0700_state *st = dev->priv;
 880                         u32 hwversion, romversion, fw_version, fwtype;
 881
 882                         dib0700_get_version(dev, &hwversion, &romversion,
 883                                 &fw_version, &fwtype);
 884
 885                         deb_info("Firmware version: %x, %d, 0x%x, %d\n",
 886                                 hwversion, romversion, fw_version, fwtype);
 887
 888                         st->fw_version = fw_version;
 889                         st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
 890
 891                         /* Disable polling mode on newer firmwares */
 892                         if (st->fw_version >= 0x10200)
 893                                 dev->props.rc.core.bulk_mode = true;
 894                         else
 895                                 dev->props.rc.core.bulk_mode = false;
 896
 897                         dib0700_rc_setup(dev, intf);
 898
 899                         return 0;
 900                 }
 901
 902         return -ENODEV;
 903 }
 904
 905 static struct usb_driver dib0700_driver = {
 906         .name       = "dvb_usb_dib0700",
 907         .probe      = dib0700_probe,
 908         .disconnect = dvb_usb_device_exit,
 909         .id_table   = dib0700_usb_id_table,
 910 };
 911
 912 module_usb_driver(dib0700_driver);
 913
 914 /*(DEBLOBBED)*/
 915 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 916 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
 917 MODULE_VERSION("1.0");
 918 MODULE_LICENSE("GPL");