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 int dvb_usb_dib0700_ir_proto = 1;
  17 module_param(dvb_usb_dib0700_ir_proto, int, 0644);
  18 MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6).");
  19
  20 static int nb_packet_buffer_size = 21;
  21 module_param(nb_packet_buffer_size, int, 0644);
  22 MODULE_PARM_DESC(nb_packet_buffer_size,
  23         "Set the dib0700 driver data buffer size. This parameter "
  24         "corresponds to the number of TS packets. The actual size of "
  25         "the data buffer corresponds to this parameter "
  26         "multiplied by 188 (default: 21)");
  27
  28 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  29
  30
  31 int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
  32                         u32 *romversion, u32 *ramversion, u32 *fwtype)
  33 {
  34         u8 b[16];
  35         int ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
  36                                   REQUEST_GET_VERSION,
  37                                   USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
  38                                   b, sizeof(b), USB_CTRL_GET_TIMEOUT);
  39         if (hwversion != NULL)
  40                 *hwversion  = (b[0] << 24)  | (b[1] << 16)  | (b[2] << 8)  | b[3];
  41         if (romversion != NULL)
  42                 *romversion = (b[4] << 24)  | (b[5] << 16)  | (b[6] << 8)  | b[7];
  43         if (ramversion != NULL)
  44                 *ramversion = (b[8] << 24)  | (b[9] << 16)  | (b[10] << 8) | b[11];
  45         if (fwtype != NULL)
  46                 *fwtype     = (b[12] << 24) | (b[13] << 16) | (b[14] << 8) | b[15];
  47         return ret;
  48 }
  49
  50 /* expecting rx buffer: request data[0] data[1] ... data[2] */
  51 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
  52 {
  53         int status;
  54
  55         deb_data(">>> ");
  56         debug_dump(tx,txlen,deb_data);
  57
  58         status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
  59                 tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
  60                 USB_CTRL_GET_TIMEOUT);
  61
  62         if (status != txlen)
  63                 deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);
  64
  65         return status < 0 ? status : 0;
  66 }
  67
  68 /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
  69 int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
  70 {
  71         u16 index, value;
  72         int status;
  73
  74         if (txlen < 2) {
  75                 err("tx buffer length is smaller than 2. Makes no sense.");
  76                 return -EINVAL;
  77         }
  78         if (txlen > 4) {
  79                 err("tx buffer length is larger than 4. Not supported.");
  80                 return -EINVAL;
  81         }
  82
  83         deb_data(">>> ");
  84         debug_dump(tx,txlen,deb_data);
  85
  86         value = ((txlen - 2) << 8) | tx[1];
  87         index = 0;
  88         if (txlen > 2)
  89                 index |= (tx[2] << 8);
  90         if (txlen > 3)
  91                 index |= tx[3];
  92
  93         status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
  94                         USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
  95                         USB_CTRL_GET_TIMEOUT);
  96
  97         if (status < 0)
  98                 deb_info("ep 0 read error (status = %d)\n",status);
  99
 100         deb_data("<<< ");
 101         debug_dump(rx,rxlen,deb_data);
 102
 103         return status; /* length in case of success */
 104 }
 105
 106 int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
 107 {
 108         u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) };
 109         return dib0700_ctrl_wr(d,buf,3);
 110 }
 111
 112 static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets)
 113 {
 114     struct dib0700_state *st = d->priv;
 115     u8 b[3];
 116     int ret;
 117
 118     if (st->fw_version >= 0x10201) {
 119         b[0] = REQUEST_SET_USB_XFER_LEN;
 120         b[1] = (nb_ts_packets >> 8)&0xff;
 121         b[2] = nb_ts_packets & 0xff;
 122
 123         deb_info("set the USB xfer len to %i Ts packet\n", nb_ts_packets);
 124
 125         ret = dib0700_ctrl_wr(d, b, 3);
 126     } else {
 127         deb_info("this firmware does not allow to change the USB xfer len\n");
 128         ret = -EIO;
 129     }
 130     return ret;
 131 }
 132
 133 /*
 134  * I2C master xfer function (supported in 1.20 firmware)
 135  */
 136 static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
 137                                 int num)
 138 {
 139         /* The new i2c firmware messages are more reliable and in particular
 140            properly support i2c read calls not preceded by a write */
 141
 142         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 143         uint8_t bus_mode = 1;  /* 0=eeprom bus, 1=frontend bus */
 144         uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */
 145         uint8_t en_start = 0;
 146         uint8_t en_stop = 0;
 147         uint8_t buf[255]; /* TBV: malloc ? */
 148         int result, i;
 149
 150         /* Ensure nobody else hits the i2c bus while we're sending our
 151            sequence of messages, (such as the remote control thread) */
 152         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 153                 return -EAGAIN;
 154
 155         for (i = 0; i < num; i++) {
 156                 if (i == 0) {
 157                         /* First message in the transaction */
 158                         en_start = 1;
 159                 } else if (!(msg[i].flags & I2C_M_NOSTART)) {
 160                         /* Device supports repeated-start */
 161                         en_start = 1;
 162                 } else {
 163                         /* Not the first packet and device doesn't support
 164                            repeated start */
 165                         en_start = 0;
 166                 }
 167                 if (i == (num - 1)) {
 168                         /* Last message in the transaction */
 169                         en_stop = 1;
 170                 }
 171
 172                 if (msg[i].flags & I2C_M_RD) {
 173                         /* Read request */
 174                         u16 index, value;
 175                         uint8_t i2c_dest;
 176
 177                         i2c_dest = (msg[i].addr << 1);
 178                         value = ((en_start << 7) | (en_stop << 6) |
 179                                  (msg[i].len & 0x3F)) << 8 | i2c_dest;
 180                         /* I2C ctrl + FE bus; */
 181                         index = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);
 182
 183                         result = usb_control_msg(d->udev,
 184                                                  usb_rcvctrlpipe(d->udev, 0),
 185                                                  REQUEST_NEW_I2C_READ,
 186                                                  USB_TYPE_VENDOR | USB_DIR_IN,
 187                                                  value, index, msg[i].buf,
 188                                                  msg[i].len,
 189                                                  USB_CTRL_GET_TIMEOUT);
 190                         if (result < 0) {
 191                                 err("i2c read error (status = %d)\n", result);
 192                                 break;
 193                         }
 194
 195                         deb_data("<<< ");
 196                         debug_dump(msg[i].buf, msg[i].len, deb_data);
 197
 198                 } else {
 199                         /* Write request */
 200                         buf[0] = REQUEST_NEW_I2C_WRITE;
 201                         buf[1] = (msg[i].addr << 1);
 202                         buf[2] = (en_start << 7) | (en_stop << 6) |
 203                                 (msg[i].len & 0x3F);
 204                         /* I2C ctrl + FE bus; */
 205                         buf[3] = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);
 206                         /* The Actual i2c payload */
 207                         memcpy(&buf[4], msg[i].buf, msg[i].len);
 208
 209                         deb_data(">>> ");
 210                         debug_dump(buf, msg[i].len + 4, deb_data);
 211
 212                         result = usb_control_msg(d->udev,
 213                                                  usb_sndctrlpipe(d->udev, 0),
 214                                                  REQUEST_NEW_I2C_WRITE,
 215                                                  USB_TYPE_VENDOR | USB_DIR_OUT,
 216                                                  0, 0, buf, msg[i].len + 4,
 217                                                  USB_CTRL_GET_TIMEOUT);
 218                         if (result < 0) {
 219                                 err("i2c write error (status = %d)\n", result);
 220                                 break;
 221                         }
 222                 }
 223         }
 224         mutex_unlock(&d->i2c_mutex);
 225         return i;
 226 }
 227
 228 /*
 229  * I2C master xfer function (pre-1.20 firmware)
 230  */
 231 static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
 232                                    struct i2c_msg *msg, int num)
 233 {
 234         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 235         int i,len;
 236         u8 buf[255];
 237
 238         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 239                 return -EAGAIN;
 240
 241         for (i = 0; i < num; i++) {
 242                 /* fill in the address */
 243                 buf[1] = (msg[i].addr << 1);
 244                 /* fill the buffer */
 245                 memcpy(&buf[2], msg[i].buf, msg[i].len);
 246
 247                 /* write/read request */
 248                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 249                         buf[0] = REQUEST_I2C_READ;
 250                         buf[1] |= 1;
 251
 252                         /* special thing in the current firmware: when length is zero the read-failed */
 253                         if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0) {
 254                                 deb_info("I2C read failed on address 0x%02x\n",
 255                                          msg[i].addr);
 256                                 break;
 257                         }
 258
 259                         msg[i+1].len = len;
 260
 261                         i++;
 262                 } else {
 263                         buf[0] = REQUEST_I2C_WRITE;
 264                         if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
 265                                 break;
 266                 }
 267         }
 268
 269         mutex_unlock(&d->i2c_mutex);
 270         return i;
 271 }
 272
 273 static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
 274                             int num)
 275 {
 276         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 277         struct dib0700_state *st = d->priv;
 278
 279         if (st->fw_use_new_i2c_api == 1) {
 280                 /* User running at least fw 1.20 */
 281                 return dib0700_i2c_xfer_new(adap, msg, num);
 282         } else {
 283                 /* Use legacy calls */
 284                 return dib0700_i2c_xfer_legacy(adap, msg, num);
 285         }
 286 }
 287
 288 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
 289 {
 290         return I2C_FUNC_I2C;
 291 }
 292
 293 struct i2c_algorithm dib0700_i2c_algo = {
 294         .master_xfer   = dib0700_i2c_xfer,
 295         .functionality = dib0700_i2c_func,
 296 };
 297
 298 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
 299                         struct dvb_usb_device_description **desc, int *cold)
 300 {
 301         u8 b[16];
 302         s16 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev,0),
 303                 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
 304
 305         deb_info("FW GET_VERSION length: %d\n",ret);
 306
 307         *cold = ret <= 0;
 308
 309         deb_info("cold: %d\n", *cold);
 310         return 0;
 311 }
 312
 313 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
 314         u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
 315         u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
 316 {
 317         u8 b[10];
 318         b[0] = REQUEST_SET_CLOCK;
 319         b[1] = (en_pll << 7) | (pll_src << 6) | (pll_range << 5) | (clock_gpio3 << 4);
 320         b[2] = (pll_prediv >> 8)  & 0xff; // MSB
 321         b[3] =  pll_prediv        & 0xff; // LSB
 322         b[4] = (pll_loopdiv >> 8) & 0xff; // MSB
 323         b[5] =  pll_loopdiv       & 0xff; // LSB
 324         b[6] = (free_div >> 8)    & 0xff; // MSB
 325         b[7] =  free_div          & 0xff; // LSB
 326         b[8] = (dsuScaler >> 8)   & 0xff; // MSB
 327         b[9] =  dsuScaler         & 0xff; // LSB
 328
 329         return dib0700_ctrl_wr(d, b, 10);
 330 }
 331
 332 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
 333 {
 334         switch (clk_MHz) {
 335                 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
 336                 default: return -EINVAL;
 337         }
 338         return 0;
 339 }
 340
 341 static int dib0700_jumpram(struct usb_device *udev, u32 address)
 342 {
 343         int ret, actlen;
 344         u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
 345                 (address >> 24) & 0xff,
 346                 (address >> 16) & 0xff,
 347                 (address >> 8)  & 0xff,
 348                  address        & 0xff };
 349
 350         if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
 351                 deb_fw("jumpram to 0x%x failed\n",address);
 352                 return ret;
 353         }
 354         if (actlen != 8) {
 355                 deb_fw("jumpram to 0x%x failed\n",address);
 356                 return -EIO;
 357         }
 358         return 0;
 359 }
 360
 361 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
 362 {
 363         struct hexline hx;
 364         int pos = 0, ret, act_len, i, adap_num;
 365         u8 b[16];
 366         u32 fw_version;
 367
 368         u8 buf[260];
 369
 370         while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
 371                 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);
 372
 373                 buf[0] = hx.len;
 374                 buf[1] = (hx.addr >> 8) & 0xff;
 375                 buf[2] =  hx.addr       & 0xff;
 376                 buf[3] = hx.type;
 377                 memcpy(&buf[4],hx.data,hx.len);
 378                 buf[4+hx.len] = hx.chk;
 379
 380                 ret = usb_bulk_msg(udev,
 381                         usb_sndbulkpipe(udev, 0x01),
 382                         buf,
 383                         hx.len + 5,
 384                         &act_len,
 385                         1000);
 386
 387                 if (ret < 0) {
 388                         err("firmware download failed at %d with %d",pos,ret);
 389                         return ret;
 390                 }
 391         }
 392
 393         if (ret == 0) {
 394                 /* start the firmware */
 395                 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
 396                         info("firmware started successfully.");
 397                         msleep(500);
 398                 }
 399         } else
 400                 ret = -EIO;
 401
 402         /* the number of ts packet has to be at least 1 */
 403         if (nb_packet_buffer_size < 1)
 404                 nb_packet_buffer_size = 1;
 405
 406         /* get the fimware version */
 407         usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 408                                   REQUEST_GET_VERSION,
 409                                   USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 410                                   b, sizeof(b), USB_CTRL_GET_TIMEOUT);
 411         fw_version = (b[8] << 24)  | (b[9] << 16)  | (b[10] << 8) | b[11];
 412
 413         /* set the buffer size - DVB-USB is allocating URB buffers
 414          * only after the firwmare download was successful */
 415         for (i = 0; i < dib0700_device_count; i++) {
 416                 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters;
 417                                 adap_num++) {
 418                         if (fw_version >= 0x10201)
 419                                 dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = 188*nb_packet_buffer_size;
 420                         else {
 421                                 /* for fw version older than 1.20.1,
 422                                  * the buffersize has to be n times 512 */
 423                                 dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512;
 424                                 if (dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize < 512)
 425                                         dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = 512;
 426                         }
 427                 }
 428         }
 429
 430         return ret;
 431 }
 432
 433 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 434 {
 435         struct dib0700_state *st = adap->dev->priv;
 436         u8 b[4];
 437         int ret;
 438
 439         if ((onoff != 0) && (st->fw_version >= 0x10201)) {
 440                 /* for firmware later than 1.20.1,
 441                  * the USB xfer length can be set  */
 442                 ret = dib0700_set_usb_xfer_len(adap->dev,
 443                         st->nb_packet_buffer_size);
 444                 if (ret < 0) {
 445                         deb_info("can not set the USB xfer len\n");
 446                         return ret;
 447                 }
 448         }
 449
 450         b[0] = REQUEST_ENABLE_VIDEO;
 451         b[1] = (onoff << 4) | 0x00; /* this bit gives a kind of command, rather than enabling something or not */
 452
 453         if (st->disable_streaming_master_mode == 1)
 454                 b[2] = 0x00;
 455         else
 456                 b[2] = (0x01 << 4); /* Master mode */
 457
 458         b[3] = 0x00;
 459
 460         deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
 461
 462         if (onoff)
 463                 st->channel_state |=   1 << adap->id;
 464         else
 465                 st->channel_state &= ~(1 << adap->id);
 466
 467         b[2] |= st->channel_state;
 468
 469         deb_info("data for streaming: %x %x\n",b[1],b[2]);
 470
 471         return dib0700_ctrl_wr(adap->dev, b, 4);
 472 }
 473
 474 /* Number of keypresses to ignore before start repeating */
 475 #define RC_REPEAT_DELAY_V1_20 10
 476
 477 /* This is the structure of the RC response packet starting in firmware 1.20 */
 478 struct dib0700_rc_response {
 479         u8 report_id;
 480         u8 data_state;
 481         u16 system;
 482         u8 data;
 483         u8 not_data;
 484 };
 485 #define RC_MSG_SIZE_V1_20 6
 486
 487 static void dib0700_rc_urb_completion(struct urb *purb)
 488 {
 489         struct dvb_usb_device *d = purb->context;
 490         struct dvb_usb_rc_key *keymap;
 491         struct dib0700_state *st;
 492         struct dib0700_rc_response poll_reply;
 493         u8 *buf;
 494         int found = 0;
 495         u32 event;
 496         int state;
 497         int i;
 498
 499         deb_info("%s()\n", __func__);
 500         if (d == NULL)
 501                 return;
 502
 503         if (d->rc_input_dev == NULL) {
 504                 /* This will occur if disable_rc_polling=1 */
 505                 usb_free_urb(purb);
 506                 return;
 507         }
 508
 509         keymap = d->props.rc_key_map;
 510         st = d->priv;
 511         buf = (u8 *)purb->transfer_buffer;
 512
 513         if (purb->status < 0) {
 514                 deb_info("discontinuing polling\n");
 515                 usb_free_urb(purb);
 516                 return;
 517         }
 518
 519         if (purb->actual_length != RC_MSG_SIZE_V1_20) {
 520                 deb_info("malformed rc msg size=%d\n", purb->actual_length);
 521                 goto resubmit;
 522         }
 523
 524         /* Set initial results in case we exit the function early */
 525         event = 0;
 526         state = REMOTE_NO_KEY_PRESSED;
 527
 528         deb_data("IR raw %02X %02X %02X %02X %02X %02X (len %d)\n", buf[0],
 529                  buf[1], buf[2], buf[3], buf[4], buf[5], purb->actual_length);
 530
 531         switch (dvb_usb_dib0700_ir_proto) {
 532         case 0:
 533                 /* NEC Protocol */
 534                 poll_reply.report_id  = 0;
 535                 poll_reply.data_state = 1;
 536                 poll_reply.system     = buf[2];
 537                 poll_reply.data       = buf[4];
 538                 poll_reply.not_data   = buf[5];
 539
 540                 /* NEC protocol sends repeat code as 0 0 0 FF */
 541                 if ((poll_reply.system == 0x00) && (poll_reply.data == 0x00)
 542                     && (poll_reply.not_data == 0xff)) {
 543                         poll_reply.data_state = 2;
 544                         break;
 545                 }
 546                 break;
 547         default:
 548                 /* RC5 Protocol */
 549                 poll_reply.report_id  = buf[0];
 550                 poll_reply.data_state = buf[1];
 551                 poll_reply.system     = (buf[2] << 8) | buf[3];
 552                 poll_reply.data       = buf[4];
 553                 poll_reply.not_data   = buf[5];
 554                 break;
 555         }
 556
 557         if ((poll_reply.data + poll_reply.not_data) != 0xff) {
 558                 /* Key failed integrity check */
 559                 err("key failed integrity check: %04x %02x %02x",
 560                     poll_reply.system,
 561                     poll_reply.data, poll_reply.not_data);
 562                 goto resubmit;
 563         }
 564
 565         deb_data("rid=%02x ds=%02x sm=%04x d=%02x nd=%02x\n",
 566                  poll_reply.report_id, poll_reply.data_state,
 567                  poll_reply.system, poll_reply.data, poll_reply.not_data);
 568
 569         /* Find the key in the map */
 570         for (i = 0; i < d->props.rc_key_map_size; i++) {
 571                 if (rc5_custom(&keymap[i]) == (poll_reply.system & 0xff) &&
 572                     rc5_data(&keymap[i]) == poll_reply.data) {
 573                         event = keymap[i].event;
 574                         found = 1;
 575                         break;
 576                 }
 577         }
 578
 579         if (found == 0) {
 580                 err("Unknown remote controller key: %04x %02x %02x",
 581                     poll_reply.system, poll_reply.data, poll_reply.not_data);
 582                 d->last_event = 0;
 583                 goto resubmit;
 584         }
 585
 586         if (poll_reply.data_state == 1) {
 587                 /* New key hit */
 588                 st->rc_counter = 0;
 589                 event = keymap[i].event;
 590                 state = REMOTE_KEY_PRESSED;
 591                 d->last_event = keymap[i].event;
 592         } else if (poll_reply.data_state == 2) {
 593                 /* Key repeated */
 594                 st->rc_counter++;
 595
 596                 /* prevents unwanted double hits */
 597                 if (st->rc_counter > RC_REPEAT_DELAY_V1_20) {
 598                         event = d->last_event;
 599                         state = REMOTE_KEY_PRESSED;
 600                         st->rc_counter = RC_REPEAT_DELAY_V1_20;
 601                 }
 602         } else {
 603                 err("Unknown data state [%d]", poll_reply.data_state);
 604         }
 605
 606         switch (state) {
 607         case REMOTE_NO_KEY_PRESSED:
 608                 break;
 609         case REMOTE_KEY_PRESSED:
 610                 deb_info("key pressed\n");
 611                 d->last_event = event;
 612         case REMOTE_KEY_REPEAT:
 613                 deb_info("key repeated\n");
 614                 input_event(d->rc_input_dev, EV_KEY, event, 1);
 615                 input_sync(d->rc_input_dev);
 616                 input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
 617                 input_sync(d->rc_input_dev);
 618                 break;
 619         default:
 620                 break;
 621         }
 622
 623 resubmit:
 624         /* Clean the buffer before we requeue */
 625         memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20);
 626
 627         /* Requeue URB */
 628         usb_submit_urb(purb, GFP_ATOMIC);
 629 }
 630
 631 int dib0700_rc_setup(struct dvb_usb_device *d)
 632 {
 633         struct dib0700_state *st = d->priv;
 634         u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0};
 635         struct urb *purb;
 636         int ret;
 637         int i;
 638
 639         if (d->props.rc_key_map == NULL)
 640                 return 0;
 641
 642         /* Set the IR mode */
 643         i = dib0700_ctrl_wr(d, rc_setup, 3);
 644         if (i<0) {
 645                 err("ir protocol setup failed");
 646                 return -1;
 647         }
 648
 649         if (st->fw_version < 0x10200)
 650                 return 0;
 651
 652         /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
 653         purb = usb_alloc_urb(0, GFP_KERNEL);
 654         if (purb == NULL) {
 655                 err("rc usb alloc urb failed\n");
 656                 return -1;
 657         }
 658
 659         purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
 660         if (purb->transfer_buffer == NULL) {
 661                 err("rc kzalloc failed\n");
 662                 usb_free_urb(purb);
 663                 return -1;
 664         }
 665
 666         purb->status = -EINPROGRESS;
 667         usb_fill_bulk_urb(purb, d->udev, usb_rcvbulkpipe(d->udev, 1),
 668                           purb->transfer_buffer, RC_MSG_SIZE_V1_20,
 669                           dib0700_rc_urb_completion, d);
 670
 671         ret = usb_submit_urb(purb, GFP_ATOMIC);
 672         if (ret != 0) {
 673                 err("rc submit urb failed\n");
 674                 return -1;
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int dib0700_probe(struct usb_interface *intf,
 681                 const struct usb_device_id *id)
 682 {
 683         int i;
 684         struct dvb_usb_device *dev;
 685
 686         for (i = 0; i < dib0700_device_count; i++)
 687                 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
 688                     &dev, adapter_nr) == 0) {
 689                         struct dib0700_state *st = dev->priv;
 690                         u32 hwversion, romversion, fw_version, fwtype;
 691
 692                         dib0700_get_version(dev, &hwversion, &romversion,
 693                                 &fw_version, &fwtype);
 694
 695                         deb_info("Firmware version: %x, %d, 0x%x, %d\n",
 696                                 hwversion, romversion, fw_version, fwtype);
 697
 698                         st->fw_version = fw_version;
 699                         st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
 700
 701                         dib0700_rc_setup(dev);
 702
 703                         return 0;
 704                 }
 705
 706         return -ENODEV;
 707 }
 708
 709 static struct usb_driver dib0700_driver = {
 710         .name       = "dvb_usb_dib0700",
 711         .probe      = dib0700_probe,
 712         .disconnect = dvb_usb_device_exit,
 713         .id_table   = dib0700_usb_id_table,
 714 };
 715
 716 /* module stuff */
 717 static int __init dib0700_module_init(void)
 718 {
 719         int result;
 720         info("loaded with support for %d different device-types", dib0700_device_count);
 721         if ((result = usb_register(&dib0700_driver))) {
 722                 err("usb_register failed. Error number %d",result);
 723                 return result;
 724         }
 725
 726         return 0;
 727 }
 728
 729 static void __exit dib0700_module_exit(void)
 730 {
 731         /* deregister this driver from the USB subsystem */
 732         usb_deregister(&dib0700_driver);
 733 }
 734
 735 module_init (dib0700_module_init);
 736 module_exit (dib0700_module_exit);
 737
 738 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
 739 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
 740 MODULE_VERSION("1.0");
 741 MODULE_LICENSE("GPL");