drivers/media/dvb/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 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] */
  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 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
 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 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  */
 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 -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  */
 266 static 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
 315 static 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
 330 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
 331 {
 332         return I2C_FUNC_I2C;
 333 }
 334
 335 struct i2c_algorithm dib0700_i2c_algo = {
 336         .master_xfer   = dib0700_i2c_xfer,
 337         .functionality = dib0700_i2c_func,
 338 };
 339
 340 int 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
 363 static 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
 393 int 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
 430 int 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
 439 static 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         }
 465 out:
 466         kfree(buf);
 467         return ret;
 468 }
 469
 470 int 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         }
 541 out:
 542         kfree(buf);
 543         return ret;
 544 }
 545
 546 int 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
 606 int 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
 648 out:
 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 */
 657 struct 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
 672 static 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 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                         rc_repeat(d->rc_dev);
 717                         goto resubmit;
 718                 }
 719
 720                 if ((poll_reply->system ^ poll_reply->not_system) != 0xff) {
 721                         deb_data("NEC extended protocol\n");
 722                         /* NEC extended code - 24 bits */
 723                         keycode = be16_to_cpu(poll_reply->system16) << 8 | poll_reply->data;
 724                 } else {
 725                         deb_data("NEC normal protocol\n");
 726                         /* normal NEC code - 16 bits */
 727                         keycode = poll_reply->system << 8 | poll_reply->data;
 728                 }
 729
 730                 break;
 731         default:
 732                 deb_data("RC5 protocol\n");
 733                 /* RC5 Protocol */
 734                 toggle = poll_reply->report_id;
 735                 keycode = poll_reply->system << 8 | poll_reply->data;
 736
 737                 break;
 738         }
 739
 740         if ((poll_reply->data + poll_reply->not_data) != 0xff) {
 741                 /* Key failed integrity check */
 742                 err("key failed integrity check: %04x %02x %02x",
 743                     poll_reply->system,
 744                     poll_reply->data, poll_reply->not_data);
 745                 goto resubmit;
 746         }
 747
 748         rc_keydown(d->rc_dev, keycode, toggle);
 749
 750 resubmit:
 751         /* Clean the buffer before we requeue */
 752         memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20);
 753
 754         /* Requeue URB */
 755         usb_submit_urb(purb, GFP_ATOMIC);
 756 }
 757
 758 int dib0700_rc_setup(struct dvb_usb_device *d)
 759 {
 760         struct dib0700_state *st = d->priv;
 761         struct urb *purb;
 762         int ret;
 763
 764         /* Poll-based. Don't initialize bulk mode */
 765         if (st->fw_version < 0x10200)
 766                 return 0;
 767
 768         /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
 769         purb = usb_alloc_urb(0, GFP_KERNEL);
 770         if (purb == NULL) {
 771                 err("rc usb alloc urb failed\n");
 772                 return -ENOMEM;
 773         }
 774
 775         purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
 776         if (purb->transfer_buffer == NULL) {
 777                 err("rc kzalloc failed\n");
 778                 usb_free_urb(purb);
 779                 return -ENOMEM;
 780         }
 781
 782         purb->status = -EINPROGRESS;
 783         usb_fill_bulk_urb(purb, d->udev, usb_rcvbulkpipe(d->udev, 1),
 784                           purb->transfer_buffer, RC_MSG_SIZE_V1_20,
 785                           dib0700_rc_urb_completion, d);
 786
 787         ret = usb_submit_urb(purb, GFP_ATOMIC);
 788         if (ret)
 789                 err("rc submit urb failed\n");
 790
 791         return ret;
 792 }
 793
 794 static int dib0700_probe(struct usb_interface *intf,
 795                 const struct usb_device_id *id)
 796 {
 797         int i;
 798         struct dvb_usb_device *dev;
 799
 800         for (i = 0; i < dib0700_device_count; i++)
 801                 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
 802                     &dev, adapter_nr) == 0) {
 803                         struct dib0700_state *st = dev->priv;
 804                         u32 hwversion, romversion, fw_version, fwtype;
 805
 806                         dib0700_get_version(dev, &hwversion, &romversion,
 807                                 &fw_version, &fwtype);
 808
 809                         deb_info("Firmware version: %x, %d, 0x%x, %d\n",
 810                                 hwversion, romversion, fw_version, fwtype);
 811
 812                         st->fw_version = fw_version;
 813                         st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
 814
 815                         /* Disable polling mode on newer firmwares */
 816                         if (st->fw_version >= 0x10200)
 817                                 dev->props.rc.core.bulk_mode = true;
 818                         else
 819                                 dev->props.rc.core.bulk_mode = false;
 820
 821                         dib0700_rc_setup(dev);
 822
 823                         return 0;
 824                 }
 825
 826         return -ENODEV;
 827 }
 828
 829 static struct usb_driver dib0700_driver = {
 830         .name       = "dvb_usb_dib0700",
 831         .probe      = dib0700_probe,
 832         .disconnect = dvb_usb_device_exit,
 833         .id_table   = dib0700_usb_id_table,
 834 };
 835
 836 /* module stuff */
 837 static int __init dib0700_module_init(void)
 838 {
 839         int result;
 840         info("loaded with support for %d different device-types", dib0700_device_count);
 841         if ((result = usb_register(&dib0700_driver))) {
 842                 err("usb_register failed. Error number %d",result);
 843                 return result;
 844         }
 845
 846         return 0;
 847 }
 848
 849 static void __exit dib0700_module_exit(void)
 850 {
 851         /* deregister this driver from the USB subsystem */
 852         usb_deregister(&dib0700_driver);
 853 }
 854
 855 module_init (dib0700_module_init);
 856 module_exit (dib0700_module_exit);
 857
 858 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
 859 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
 860 MODULE_VERSION("1.0");
 861 MODULE_LICENSE("GPL");