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, 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                                 mutex_unlock(&d->i2c_mutex);
 232                                 return -EINTR;
 233                         }
 234                         st->buf[0] = REQUEST_NEW_I2C_WRITE;
 235                         st->buf[1] = msg[i].addr << 1;
 236                         st->buf[2] = (en_start << 7) | (en_stop << 6) |
 237                                 (msg[i].len & 0x3F);
 238                         /* I2C ctrl + FE bus; */
 239                         st->buf[3] = ((gen_mode << 6) & 0xC0) |
 240                                  ((bus_mode << 4) & 0x30);
 241                         /* The Actual i2c payload */
 242                         memcpy(&st->buf[4], msg[i].buf, msg[i].len);
 243
 244                         deb_data(">>> ");
 245                         debug_dump(st->buf, msg[i].len + 4, deb_data);
 246
 247                         result = usb_control_msg(d->udev,
 248                                                  usb_sndctrlpipe(d->udev, 0),
 249                                                  REQUEST_NEW_I2C_WRITE,
 250                                                  USB_TYPE_VENDOR | USB_DIR_OUT,
 251                                                  0, 0, st->buf, msg[i].len + 4,
 252                                                  USB_CTRL_GET_TIMEOUT);
 253                         mutex_unlock(&d->usb_mutex);
 254                         if (result < 0) {
 255                                 deb_info("i2c write error (status = %d)\n", result);
 256                                 break;
 257                         }
 258                 }
 259         }
 260         mutex_unlock(&d->i2c_mutex);
 261         return i;
 262 }
 263
 264 /*
 265  * I2C master xfer function (pre-1.20 firmware)
 266  */
 267 static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
 268                                    struct i2c_msg *msg, int num)
 269 {
 270         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 271         struct dib0700_state *st = d->priv;
 272         int i,len;
 273
 274         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 275                 return -EINTR;
 276         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 277                 err("could not acquire lock");
 278                 mutex_unlock(&d->i2c_mutex);
 279                 return -EINTR;
 280         }
 281
 282         for (i = 0; i < num; i++) {
 283                 /* fill in the address */
 284                 st->buf[1] = msg[i].addr << 1;
 285                 /* fill the buffer */
 286                 memcpy(&st->buf[2], msg[i].buf, msg[i].len);
 287
 288                 /* write/read request */
 289                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 290                         st->buf[0] = REQUEST_I2C_READ;
 291                         st->buf[1] |= 1;
 292
 293                         /* special thing in the current firmware: when length is zero the read-failed */
 294                         len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2,
 295                                         msg[i+1].buf, msg[i+1].len);
 296                         if (len <= 0) {
 297                                 deb_info("I2C read failed on address 0x%02x\n",
 298                                                 msg[i].addr);
 299                                 break;
 300                         }
 301
 302                         msg[i+1].len = len;
 303
 304                         i++;
 305                 } else {
 306                         st->buf[0] = REQUEST_I2C_WRITE;
 307                         if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0)
 308                                 break;
 309                 }
 310         }
 311         mutex_unlock(&d->usb_mutex);
 312         mutex_unlock(&d->i2c_mutex);
 313
 314         return i;
 315 }
 316
 317 static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 318                             int num)
 319 {
 320         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 321         struct dib0700_state *st = d->priv;
 322
 323         if (st->fw_use_new_i2c_api == 1) {
 324                 /* User running at least fw 1.20 */
 325                 return dib0700_i2c_xfer_new(adap, msg, num);
 326         } else {
 327                 /* Use legacy calls */
 328                 return dib0700_i2c_xfer_legacy(adap, msg, num);
 329         }
 330 }
 331
 332 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
 333 {
 334         return I2C_FUNC_I2C;
 335 }
 336
 337 struct i2c_algorithm dib0700_i2c_algo = {
 338         .master_xfer   = dib0700_i2c_xfer,
 339         .functionality = dib0700_i2c_func,
 340 };
 341
 342 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
 343                         struct dvb_usb_device_description **desc, int *cold)
 344 {
 345         s16 ret;
 346         u8 *b;
 347
 348         b = kmalloc(16, GFP_KERNEL);
 349         if (!b)
 350                 return  -ENOMEM;
 351
 352
 353         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 354                 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
 355
 356         deb_info("FW GET_VERSION length: %d\n",ret);
 357
 358         *cold = ret <= 0;
 359         deb_info("cold: %d\n", *cold);
 360
 361         kfree(b);
 362         return 0;
 363 }
 364
 365 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
 366         u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
 367         u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
 368 {
 369         struct dib0700_state *st = d->priv;
 370         int ret;
 371
 372         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 373                 err("could not acquire lock");
 374                 return -EINTR;
 375         }
 376
 377         st->buf[0] = REQUEST_SET_CLOCK;
 378         st->buf[1] = (en_pll << 7) | (pll_src << 6) |
 379                 (pll_range << 5) | (clock_gpio3 << 4);
 380         st->buf[2] = (pll_prediv >> 8)  & 0xff; /* MSB */
 381         st->buf[3] =  pll_prediv        & 0xff; /* LSB */
 382         st->buf[4] = (pll_loopdiv >> 8) & 0xff; /* MSB */
 383         st->buf[5] =  pll_loopdiv       & 0xff; /* LSB */
 384         st->buf[6] = (free_div >> 8)    & 0xff; /* MSB */
 385         st->buf[7] =  free_div          & 0xff; /* LSB */
 386         st->buf[8] = (dsuScaler >> 8)   & 0xff; /* MSB */
 387         st->buf[9] =  dsuScaler         & 0xff; /* LSB */
 388
 389         ret = dib0700_ctrl_wr(d, st->buf, 10);
 390         mutex_unlock(&d->usb_mutex);
 391
 392         return ret;
 393 }
 394
 395 int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
 396 {
 397         struct dib0700_state *st = d->priv;
 398         u16 divider;
 399         int ret;
 400
 401         if (scl_kHz == 0)
 402                 return -EINVAL;
 403
 404         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 405                 err("could not acquire lock");
 406                 return -EINTR;
 407         }
 408
 409         st->buf[0] = REQUEST_SET_I2C_PARAM;
 410         divider = (u16) (30000 / scl_kHz);
 411         st->buf[1] = 0;
 412         st->buf[2] = (u8) (divider >> 8);
 413         st->buf[3] = (u8) (divider & 0xff);
 414         divider = (u16) (72000 / scl_kHz);
 415         st->buf[4] = (u8) (divider >> 8);
 416         st->buf[5] = (u8) (divider & 0xff);
 417         divider = (u16) (72000 / scl_kHz); /* clock: 72MHz */
 418         st->buf[6] = (u8) (divider >> 8);
 419         st->buf[7] = (u8) (divider & 0xff);
 420
 421         deb_info("setting I2C speed: %04x %04x %04x (%d kHz).",
 422                 (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) |
 423                 st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz);
 424
 425         ret = dib0700_ctrl_wr(d, st->buf, 8);
 426         mutex_unlock(&d->usb_mutex);
 427
 428         return ret;
 429 }
 430
 431
 432 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
 433 {
 434         switch (clk_MHz) {
 435                 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
 436                 default: return -EINVAL;
 437         }
 438         return 0;
 439 }
 440
 441 static int dib0700_jumpram(struct usb_device *udev, u32 address)
 442 {
 443         int ret = 0, actlen;
 444         u8 *buf;
 445
 446         buf = kmalloc(8, GFP_KERNEL);
 447         if (!buf)
 448                 return -ENOMEM;
 449         buf[0] = REQUEST_JUMPRAM;
 450         buf[1] = 0;
 451         buf[2] = 0;
 452         buf[3] = 0;
 453         buf[4] = (address >> 24) & 0xff;
 454         buf[5] = (address >> 16) & 0xff;
 455         buf[6] = (address >> 8)  & 0xff;
 456         buf[7] =  address        & 0xff;
 457
 458         if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
 459                 deb_fw("jumpram to 0x%x failed\n",address);
 460                 goto out;
 461         }
 462         if (actlen != 8) {
 463                 deb_fw("jumpram to 0x%x failed\n",address);
 464                 ret = -EIO;
 465                 goto out;
 466         }
 467 out:
 468         kfree(buf);
 469         return ret;
 470 }
 471
 472 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
 473 {
 474         struct hexline hx;
 475         int pos = 0, ret, act_len, i, adap_num;
 476         u8 *buf;
 477         u32 fw_version;
 478
 479         buf = kmalloc(260, GFP_KERNEL);
 480         if (!buf)
 481                 return -ENOMEM;
 482
 483         while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
 484                 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",
 485                                 hx.addr, hx.len, hx.chk);
 486
 487                 buf[0] = hx.len;
 488                 buf[1] = (hx.addr >> 8) & 0xff;
 489                 buf[2] =  hx.addr       & 0xff;
 490                 buf[3] = hx.type;
 491                 memcpy(&buf[4],hx.data,hx.len);
 492                 buf[4+hx.len] = hx.chk;
 493
 494                 ret = usb_bulk_msg(udev,
 495                         usb_sndbulkpipe(udev, 0x01),
 496                         buf,
 497                         hx.len + 5,
 498                         &act_len,
 499                         1000);
 500
 501                 if (ret < 0) {
 502                         err("firmware download failed at %d with %d",pos,ret);
 503                         goto out;
 504                 }
 505         }
 506
 507         if (ret == 0) {
 508                 /* start the firmware */
 509                 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
 510                         info("firmware started successfully.");
 511                         msleep(500);
 512                 }
 513         } else
 514                 ret = -EIO;
 515
 516         /* the number of ts packet has to be at least 1 */
 517         if (nb_packet_buffer_size < 1)
 518                 nb_packet_buffer_size = 1;
 519
 520         /* get the firmware version */
 521         usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 522                                   REQUEST_GET_VERSION,
 523                                   USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 524                                   buf, 16, USB_CTRL_GET_TIMEOUT);
 525         fw_version = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11];
 526
 527         /* set the buffer size - DVB-USB is allocating URB buffers
 528          * only after the firwmare download was successful */
 529         for (i = 0; i < dib0700_device_count; i++) {
 530                 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters;
 531                                 adap_num++) {
 532                         if (fw_version >= 0x10201) {
 533                                 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 188*nb_packet_buffer_size;
 534                         } else {
 535                                 /* for fw version older than 1.20.1,
 536                                  * the buffersize has to be n times 512 */
 537                                 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512;
 538                                 if (dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize < 512)
 539                                         dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 512;
 540                         }
 541                 }
 542         }
 543 out:
 544         kfree(buf);
 545         return ret;
 546 }
 547
 548 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 549 {
 550         struct dib0700_state *st = adap->dev->priv;
 551         int ret;
 552
 553         if ((onoff != 0) && (st->fw_version >= 0x10201)) {
 554                 /* for firmware later than 1.20.1,
 555                  * the USB xfer length can be set  */
 556                 ret = dib0700_set_usb_xfer_len(adap->dev,
 557                         st->nb_packet_buffer_size);
 558                 if (ret < 0) {
 559                         deb_info("can not set the USB xfer len\n");
 560                         return ret;
 561                 }
 562         }
 563
 564         mutex_lock(&adap->dev->usb_mutex);
 565
 566         st->buf[0] = REQUEST_ENABLE_VIDEO;
 567         /* this bit gives a kind of command,
 568          * rather than enabling something or not */
 569         st->buf[1] = (onoff << 4) | 0x00;
 570
 571         if (st->disable_streaming_master_mode == 1)
 572                 st->buf[2] = 0x00;
 573         else
 574                 st->buf[2] = 0x01 << 4; /* Master mode */
 575
 576         st->buf[3] = 0x00;
 577
 578         deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
 579
 580         st->channel_state &= ~0x3;
 581         if ((adap->fe_adap[0].stream.props.endpoint != 2)
 582                         && (adap->fe_adap[0].stream.props.endpoint != 3)) {
 583                 deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
 584                 if (onoff)
 585                         st->channel_state |=    1 << (adap->id);
 586                 else
 587                         st->channel_state |=    1 << ~(adap->id);
 588         } else {
 589                 if (onoff)
 590                         st->channel_state |=    1 << (adap->fe_adap[0].stream.props.endpoint-2);
 591                 else
 592                         st->channel_state |=    1 << (3-adap->fe_adap[0].stream.props.endpoint);
 593         }
 594
 595         st->buf[2] |= st->channel_state;
 596
 597         deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
 598
 599         ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
 600         mutex_unlock(&adap->dev->usb_mutex);
 601
 602         return ret;
 603 }
 604
 605 int dib0700_change_protocol(struct rc_dev *rc, u64 *rc_type)
 606 {
 607         struct dvb_usb_device *d = rc->priv;
 608         struct dib0700_state *st = d->priv;
 609         int new_proto, ret;
 610
 611         if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
 612                 err("could not acquire lock");
 613                 return -EINTR;
 614         }
 615
 616         st->buf[0] = REQUEST_SET_RC;
 617         st->buf[1] = 0;
 618         st->buf[2] = 0;
 619
 620         /* Set the IR mode */
 621         if (*rc_type & RC_BIT_RC5) {
 622                 new_proto = 1;
 623                 *rc_type = RC_BIT_RC5;
 624         } else if (*rc_type & RC_BIT_NEC) {
 625                 new_proto = 0;
 626                 *rc_type = RC_BIT_NEC;
 627         } else if (*rc_type & RC_BIT_RC6_MCE) {
 628                 if (st->fw_version < 0x10200) {
 629                         ret = -EINVAL;
 630                         goto out;
 631                 }
 632                 new_proto = 2;
 633                 *rc_type = RC_BIT_RC6_MCE;
 634         } else {
 635                 ret = -EINVAL;
 636                 goto out;
 637         }
 638
 639         st->buf[1] = new_proto;
 640
 641         ret = dib0700_ctrl_wr(d, st->buf, 3);
 642         if (ret < 0) {
 643                 err("ir protocol setup failed");
 644                 goto out;
 645         }
 646
 647         d->props.rc.core.protocol = *rc_type;
 648
 649 out:
 650         mutex_unlock(&d->usb_mutex);
 651         return ret;
 652 }
 653
 654 /* This is the structure of the RC response packet starting in firmware 1.20 */
 655 struct dib0700_rc_response {
 656         u8 report_id;
 657         u8 data_state;
 658         union {
 659                 struct {
 660                         u8 system;
 661                         u8 not_system;
 662                         u8 data;
 663                         u8 not_data;
 664                 } nec;
 665                 struct {
 666                         u8 not_used;
 667                         u8 system;
 668                         u8 data;
 669                         u8 not_data;
 670                 } rc5;
 671         };
 672 };
 673 #define RC_MSG_SIZE_V1_20 6
 674
 675 static void dib0700_rc_urb_completion(struct urb *purb)
 676 {
 677         struct dvb_usb_device *d = purb->context;
 678         struct dib0700_rc_response *poll_reply;
 679         enum rc_type protocol;
 680         u32 uninitialized_var(keycode);
 681         u8 toggle;
 682
 683         deb_info("%s()\n", __func__);
 684         if (d->rc_dev == NULL) {
 685                 /* This will occur if disable_rc_polling=1 */
 686                 kfree(purb->transfer_buffer);
 687                 usb_free_urb(purb);
 688                 return;
 689         }
 690
 691         poll_reply = purb->transfer_buffer;
 692
 693         if (purb->status < 0) {
 694                 deb_info("discontinuing polling\n");
 695                 kfree(purb->transfer_buffer);
 696                 usb_free_urb(purb);
 697                 return;
 698         }
 699
 700         if (purb->actual_length != RC_MSG_SIZE_V1_20) {
 701                 deb_info("malformed rc msg size=%d\n", purb->actual_length);
 702                 goto resubmit;
 703         }
 704
 705         deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n",
 706                  poll_reply->report_id, poll_reply->data_state,
 707                  poll_reply->nec.system, poll_reply->nec.not_system,
 708                  poll_reply->nec.data, poll_reply->nec.not_data,
 709                  purb->actual_length);
 710
 711         switch (d->props.rc.core.protocol) {
 712         case RC_BIT_NEC:
 713                 protocol = RC_TYPE_NEC;
 714                 toggle = 0;
 715
 716                 /* NEC protocol sends repeat code as 0 0 0 FF */
 717                 if (poll_reply->nec.system     == 0x00 &&
 718                     poll_reply->nec.not_system == 0x00 &&
 719                     poll_reply->nec.data       == 0x00 &&
 720                     poll_reply->nec.not_data   == 0xff) {
 721                         poll_reply->data_state = 2;
 722                         break;
 723                 }
 724
 725                 if ((poll_reply->nec.data ^ poll_reply->nec.not_data) != 0xff) {
 726                         deb_data("NEC32 protocol\n");
 727                         keycode = RC_SCANCODE_NEC32(poll_reply->nec.system     << 24 |
 728                                                      poll_reply->nec.not_system << 16 |
 729                                                      poll_reply->nec.data       << 8  |
 730                                                      poll_reply->nec.not_data);
 731                 } else if ((poll_reply->nec.system ^ poll_reply->nec.not_system) != 0xff) {
 732                         deb_data("NEC extended protocol\n");
 733                         keycode = RC_SCANCODE_NECX(poll_reply->nec.system << 8 |
 734                                                     poll_reply->nec.not_system,
 735                                                     poll_reply->nec.data);
 736
 737                 } else {
 738                         deb_data("NEC normal protocol\n");
 739                         keycode = RC_SCANCODE_NEC(poll_reply->nec.system,
 740                                                    poll_reply->nec.data);
 741                 }
 742
 743                 break;
 744         default:
 745                 deb_data("RC5 protocol\n");
 746                 protocol = RC_TYPE_RC5;
 747                 toggle = poll_reply->report_id;
 748                 keycode = RC_SCANCODE_RC5(poll_reply->rc5.system, poll_reply->rc5.data);
 749
 750                 if ((poll_reply->rc5.data ^ poll_reply->rc5.not_data) != 0xff) {
 751                         /* Key failed integrity check */
 752                         err("key failed integrity check: %02x %02x %02x %02x",
 753                             poll_reply->rc5.not_used, poll_reply->rc5.system,
 754                             poll_reply->rc5.data, poll_reply->rc5.not_data);
 755                         goto resubmit;
 756                 }
 757
 758                 break;
 759         }
 760
 761         rc_keydown(d->rc_dev, protocol, keycode, toggle);
 762
 763 resubmit:
 764         /* Clean the buffer before we requeue */
 765         memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20);
 766
 767         /* Requeue URB */
 768         usb_submit_urb(purb, GFP_ATOMIC);
 769 }
 770
 771 int dib0700_rc_setup(struct dvb_usb_device *d, struct usb_interface *intf)
 772 {
 773         struct dib0700_state *st = d->priv;
 774         struct urb *purb;
 775         const struct usb_endpoint_descriptor *e;
 776         int ret, rc_ep = 1;
 777         unsigned int pipe = 0;
 778
 779         /* Poll-based. Don't initialize bulk mode */
 780         if (st->fw_version < 0x10200 || !intf)
 781                 return 0;
 782
 783         /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
 784
 785         purb = usb_alloc_urb(0, GFP_KERNEL);
 786         if (purb == NULL)
 787                 return -ENOMEM;
 788
 789         purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
 790         if (purb->transfer_buffer == NULL) {
 791                 err("rc kzalloc failed");
 792                 usb_free_urb(purb);
 793                 return -ENOMEM;
 794         }
 795
 796         purb->status = -EINPROGRESS;
 797
 798         /*
 799          * Some devices like the Hauppauge NovaTD model 52009 use an interrupt
 800          * endpoint, while others use a bulk one.
 801          */
 802         e = &intf->altsetting[0].endpoint[rc_ep].desc;
 803         if (usb_endpoint_dir_in(e)) {
 804                 if (usb_endpoint_xfer_bulk(e)) {
 805                         pipe = usb_rcvbulkpipe(d->udev, rc_ep);
 806                         usb_fill_bulk_urb(purb, d->udev, pipe,
 807                                           purb->transfer_buffer,
 808                                           RC_MSG_SIZE_V1_20,
 809                                           dib0700_rc_urb_completion, d);
 810
 811                 } else if (usb_endpoint_xfer_int(e)) {
 812                         pipe = usb_rcvintpipe(d->udev, rc_ep);
 813                         usb_fill_int_urb(purb, d->udev, pipe,
 814                                           purb->transfer_buffer,
 815                                           RC_MSG_SIZE_V1_20,
 816                                           dib0700_rc_urb_completion, d, 1);
 817                 }
 818         }
 819
 820         if (!pipe) {
 821                 err("There's no endpoint for remote controller");
 822                 kfree(purb->transfer_buffer);
 823                 usb_free_urb(purb);
 824                 return 0;
 825         }
 826
 827         ret = usb_submit_urb(purb, GFP_ATOMIC);
 828         if (ret) {
 829                 err("rc submit urb failed");
 830                 kfree(purb->transfer_buffer);
 831                 usb_free_urb(purb);
 832         }
 833
 834         return ret;
 835 }
 836
 837 static int dib0700_probe(struct usb_interface *intf,
 838                 const struct usb_device_id *id)
 839 {
 840         int i;
 841         struct dvb_usb_device *dev;
 842
 843         for (i = 0; i < dib0700_device_count; i++)
 844                 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
 845                     &dev, adapter_nr) == 0) {
 846                         struct dib0700_state *st = dev->priv;
 847                         u32 hwversion, romversion, fw_version, fwtype;
 848
 849                         dib0700_get_version(dev, &hwversion, &romversion,
 850                                 &fw_version, &fwtype);
 851
 852                         deb_info("Firmware version: %x, %d, 0x%x, %d\n",
 853                                 hwversion, romversion, fw_version, fwtype);
 854
 855                         st->fw_version = fw_version;
 856                         st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
 857
 858                         /* Disable polling mode on newer firmwares */
 859                         if (st->fw_version >= 0x10200)
 860                                 dev->props.rc.core.bulk_mode = true;
 861                         else
 862                                 dev->props.rc.core.bulk_mode = false;
 863
 864                         dib0700_rc_setup(dev, intf);
 865
 866                         return 0;
 867                 }
 868
 869         return -ENODEV;
 870 }
 871
 872 static struct usb_driver dib0700_driver = {
 873         .name       = "dvb_usb_dib0700",
 874         .probe      = dib0700_probe,
 875         .disconnect = dvb_usb_device_exit,
 876         .id_table   = dib0700_usb_id_table,
 877 };
 878
 879 module_usb_driver(dib0700_driver);
 880
 881 MODULE_FIRMWARE("dvb-usb-dib0700-1.20.fw");
 882 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 883 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
 884 MODULE_VERSION("1.0");
 885 MODULE_LICENSE("GPL");