drivers/media/usb/dvb-usb/af9005.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* DVB USB compliant Linux driver for the Afatech 9005
   3  * USB1.1 DVB-T receiver.
   4  *
   5  * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
   6  *
   7  * Thanks to Afatech who kindly provided information.
   8  *
   9  * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
  10  */
  11 #include "af9005.h"
  12
  13 /* debug */
  14 int dvb_usb_af9005_debug;
  15 module_param_named(debug, dvb_usb_af9005_debug, int, 0644);
  16 MODULE_PARM_DESC(debug,
  17                  "set debugging level (1=info,xfer=2,rc=4,reg=8,i2c=16,fw=32 (or-able))."
  18                  DVB_USB_DEBUG_STATUS);
  19 /* enable obnoxious led */
  20 bool dvb_usb_af9005_led = true;
  21 module_param_named(led, dvb_usb_af9005_led, bool, 0644);
  22 MODULE_PARM_DESC(led, "enable led (default: 1).");
  23
  24 /* eeprom dump */
  25 static int dvb_usb_af9005_dump_eeprom;
  26 module_param_named(dump_eeprom, dvb_usb_af9005_dump_eeprom, int, 0);
  27 MODULE_PARM_DESC(dump_eeprom, "dump contents of the eeprom.");
  28
  29 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  30
  31 /* remote control decoder */
  32 static int (*rc_decode) (struct dvb_usb_device *d, u8 *data, int len,
  33                 u32 *event, int *state);
  34 static void *rc_keys;
  35 static int *rc_keys_size;
  36
  37 u8 regmask[8] = { 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
  38
  39 struct af9005_device_state {
  40         u8 sequence;
  41         int led_state;
  42         unsigned char data[256];
  43 };
  44
  45 static int af9005_generic_read_write(struct dvb_usb_device *d, u16 reg,
  46                               int readwrite, int type, u8 * values, int len)
  47 {
  48         struct af9005_device_state *st = d->priv;
  49         u8 command, seq;
  50         int i, ret;
  51
  52         if (len < 1) {
  53                 err("generic read/write, less than 1 byte. Makes no sense.");
  54                 return -EINVAL;
  55         }
  56         if (len > 8) {
  57                 err("generic read/write, more than 8 bytes. Not supported.");
  58                 return -EINVAL;
  59         }
  60
  61         mutex_lock(&d->data_mutex);
  62         st->data[0] = 14;               /* rest of buffer length low */
  63         st->data[1] = 0;                /* rest of buffer length high */
  64
  65         st->data[2] = AF9005_REGISTER_RW;       /* register operation */
  66         st->data[3] = 12;               /* rest of buffer length */
  67
  68         st->data[4] = seq = st->sequence++;     /* sequence number */
  69
  70         st->data[5] = (u8) (reg >> 8);  /* register address */
  71         st->data[6] = (u8) (reg & 0xff);
  72
  73         if (type == AF9005_OFDM_REG) {
  74                 command = AF9005_CMD_OFDM_REG;
  75         } else {
  76                 command = AF9005_CMD_TUNER;
  77         }
  78
  79         if (len > 1)
  80                 command |=
  81                     AF9005_CMD_BURST | AF9005_CMD_AUTOINC | (len - 1) << 3;
  82         command |= readwrite;
  83         if (readwrite == AF9005_CMD_WRITE)
  84                 for (i = 0; i < len; i++)
  85                         st->data[8 + i] = values[i];
  86         else if (type == AF9005_TUNER_REG)
  87                 /* read command for tuner, the first byte contains the i2c address */
  88                 st->data[8] = values[0];
  89         st->data[7] = command;
  90
  91         ret = dvb_usb_generic_rw(d, st->data, 16, st->data, 17, 0);
  92         if (ret)
  93                 goto ret;
  94
  95         /* sanity check */
  96         if (st->data[2] != AF9005_REGISTER_RW_ACK) {
  97                 err("generic read/write, wrong reply code.");
  98                 ret = -EIO;
  99                 goto ret;
 100         }
 101         if (st->data[3] != 0x0d) {
 102                 err("generic read/write, wrong length in reply.");
 103                 ret = -EIO;
 104                 goto ret;
 105         }
 106         if (st->data[4] != seq) {
 107                 err("generic read/write, wrong sequence in reply.");
 108                 ret = -EIO;
 109                 goto ret;
 110         }
 111         /*
 112          * In thesis, both input and output buffers should have
 113          * identical values for st->data[5] to st->data[8].
 114          * However, windows driver doesn't check these fields, in fact
 115          * sometimes the register in the reply is different that what
 116          * has been sent
 117          */
 118         if (st->data[16] != 0x01) {
 119                 err("generic read/write wrong status code in reply.");
 120                 ret = -EIO;
 121                 goto ret;
 122         }
 123
 124         if (readwrite == AF9005_CMD_READ)
 125                 for (i = 0; i < len; i++)
 126                         values[i] = st->data[8 + i];
 127
 128 ret:
 129         mutex_unlock(&d->data_mutex);
 130         return ret;
 131
 132 }
 133
 134 int af9005_read_ofdm_register(struct dvb_usb_device *d, u16 reg, u8 * value)
 135 {
 136         int ret;
 137         deb_reg("read register %x ", reg);
 138         ret = af9005_generic_read_write(d, reg,
 139                                         AF9005_CMD_READ, AF9005_OFDM_REG,
 140                                         value, 1);
 141         if (ret)
 142                 deb_reg("failed\n");
 143         else
 144                 deb_reg("value %x\n", *value);
 145         return ret;
 146 }
 147
 148 int af9005_read_ofdm_registers(struct dvb_usb_device *d, u16 reg,
 149                                u8 * values, int len)
 150 {
 151         int ret;
 152         deb_reg("read %d registers %x ", len, reg);
 153         ret = af9005_generic_read_write(d, reg,
 154                                         AF9005_CMD_READ, AF9005_OFDM_REG,
 155                                         values, len);
 156         if (ret)
 157                 deb_reg("failed\n");
 158         else
 159                 debug_dump(values, len, deb_reg);
 160         return ret;
 161 }
 162
 163 int af9005_write_ofdm_register(struct dvb_usb_device *d, u16 reg, u8 value)
 164 {
 165         int ret;
 166         u8 temp = value;
 167         deb_reg("write register %x value %x ", reg, value);
 168         ret = af9005_generic_read_write(d, reg,
 169                                         AF9005_CMD_WRITE, AF9005_OFDM_REG,
 170                                         &temp, 1);
 171         if (ret)
 172                 deb_reg("failed\n");
 173         else
 174                 deb_reg("ok\n");
 175         return ret;
 176 }
 177
 178 int af9005_write_ofdm_registers(struct dvb_usb_device *d, u16 reg,
 179                                 u8 * values, int len)
 180 {
 181         int ret;
 182         deb_reg("write %d registers %x values ", len, reg);
 183         debug_dump(values, len, deb_reg);
 184
 185         ret = af9005_generic_read_write(d, reg,
 186                                         AF9005_CMD_WRITE, AF9005_OFDM_REG,
 187                                         values, len);
 188         if (ret)
 189                 deb_reg("failed\n");
 190         else
 191                 deb_reg("ok\n");
 192         return ret;
 193 }
 194
 195 int af9005_read_register_bits(struct dvb_usb_device *d, u16 reg, u8 pos,
 196                               u8 len, u8 * value)
 197 {
 198         u8 temp;
 199         int ret;
 200         deb_reg("read bits %x %x %x", reg, pos, len);
 201         ret = af9005_read_ofdm_register(d, reg, &temp);
 202         if (ret) {
 203                 deb_reg(" failed\n");
 204                 return ret;
 205         }
 206         *value = (temp >> pos) & regmask[len - 1];
 207         deb_reg(" value %x\n", *value);
 208         return 0;
 209
 210 }
 211
 212 int af9005_write_register_bits(struct dvb_usb_device *d, u16 reg, u8 pos,
 213                                u8 len, u8 value)
 214 {
 215         u8 temp, mask;
 216         int ret;
 217         deb_reg("write bits %x %x %x value %x\n", reg, pos, len, value);
 218         if (pos == 0 && len == 8)
 219                 return af9005_write_ofdm_register(d, reg, value);
 220         ret = af9005_read_ofdm_register(d, reg, &temp);
 221         if (ret)
 222                 return ret;
 223         mask = regmask[len - 1] << pos;
 224         temp = (temp & ~mask) | ((value << pos) & mask);
 225         return af9005_write_ofdm_register(d, reg, temp);
 226
 227 }
 228
 229 static int af9005_usb_read_tuner_registers(struct dvb_usb_device *d,
 230                                            u16 reg, u8 * values, int len)
 231 {
 232         return af9005_generic_read_write(d, reg,
 233                                          AF9005_CMD_READ, AF9005_TUNER_REG,
 234                                          values, len);
 235 }
 236
 237 static int af9005_usb_write_tuner_registers(struct dvb_usb_device *d,
 238                                             u16 reg, u8 * values, int len)
 239 {
 240         return af9005_generic_read_write(d, reg,
 241                                          AF9005_CMD_WRITE,
 242                                          AF9005_TUNER_REG, values, len);
 243 }
 244
 245 int af9005_write_tuner_registers(struct dvb_usb_device *d, u16 reg,
 246                                  u8 * values, int len)
 247 {
 248         /* don't let the name of this function mislead you: it's just used
 249            as an interface from the firmware to the i2c bus. The actual
 250            i2c addresses are contained in the data */
 251         int ret, i, done = 0, fail = 0;
 252         u8 temp;
 253         ret = af9005_usb_write_tuner_registers(d, reg, values, len);
 254         if (ret)
 255                 return ret;
 256         if (reg != 0xffff) {
 257                 /* check if write done (0xa40d bit 1) or fail (0xa40d bit 2) */
 258                 for (i = 0; i < 200; i++) {
 259                         ret =
 260                             af9005_read_ofdm_register(d,
 261                                                       xd_I2C_i2c_m_status_wdat_done,
 262                                                       &temp);
 263                         if (ret)
 264                                 return ret;
 265                         done = temp & (regmask[i2c_m_status_wdat_done_len - 1]
 266                                        << i2c_m_status_wdat_done_pos);
 267                         if (done)
 268                                 break;
 269                         fail = temp & (regmask[i2c_m_status_wdat_fail_len - 1]
 270                                        << i2c_m_status_wdat_fail_pos);
 271                         if (fail)
 272                                 break;
 273                         msleep(50);
 274                 }
 275                 if (i == 200)
 276                         return -ETIMEDOUT;
 277                 if (fail) {
 278                         /* clear write fail bit */
 279                         af9005_write_register_bits(d,
 280                                                    xd_I2C_i2c_m_status_wdat_fail,
 281                                                    i2c_m_status_wdat_fail_pos,
 282                                                    i2c_m_status_wdat_fail_len,
 283                                                    1);
 284                         return -EIO;
 285                 }
 286                 /* clear write done bit */
 287                 ret =
 288                     af9005_write_register_bits(d,
 289                                                xd_I2C_i2c_m_status_wdat_fail,
 290                                                i2c_m_status_wdat_done_pos,
 291                                                i2c_m_status_wdat_done_len, 1);
 292                 if (ret)
 293                         return ret;
 294         }
 295         return 0;
 296 }
 297
 298 int af9005_read_tuner_registers(struct dvb_usb_device *d, u16 reg, u8 addr,
 299                                 u8 * values, int len)
 300 {
 301         /* don't let the name of this function mislead you: it's just used
 302            as an interface from the firmware to the i2c bus. The actual
 303            i2c addresses are contained in the data */
 304         int ret, i;
 305         u8 temp, buf[2];
 306
 307         buf[0] = addr;          /* tuner i2c address */
 308         buf[1] = values[0];     /* tuner register */
 309
 310         values[0] = addr + 0x01;        /* i2c read address */
 311
 312         if (reg == APO_REG_I2C_RW_SILICON_TUNER) {
 313                 /* write tuner i2c address to tuner, 0c00c0 undocumented, found by sniffing */
 314                 ret = af9005_write_tuner_registers(d, 0x00c0, buf, 2);
 315                 if (ret)
 316                         return ret;
 317         }
 318
 319         /* send read command to ofsm */
 320         ret = af9005_usb_read_tuner_registers(d, reg, values, 1);
 321         if (ret)
 322                 return ret;
 323
 324         /* check if read done */
 325         for (i = 0; i < 200; i++) {
 326                 ret = af9005_read_ofdm_register(d, 0xa408, &temp);
 327                 if (ret)
 328                         return ret;
 329                 if (temp & 0x01)
 330                         break;
 331                 msleep(50);
 332         }
 333         if (i == 200)
 334                 return -ETIMEDOUT;
 335
 336         /* clear read done bit (by writing 1) */
 337         ret = af9005_write_ofdm_register(d, xd_I2C_i2c_m_data8, 1);
 338         if (ret)
 339                 return ret;
 340
 341         /* get read data (available from 0xa400) */
 342         for (i = 0; i < len; i++) {
 343                 ret = af9005_read_ofdm_register(d, 0xa400 + i, &temp);
 344                 if (ret)
 345                         return ret;
 346                 values[i] = temp;
 347         }
 348         return 0;
 349 }
 350
 351 static int af9005_i2c_write(struct dvb_usb_device *d, u8 i2caddr, u8 reg,
 352                             u8 * data, int len)
 353 {
 354         int ret, i;
 355         u8 buf[3];
 356         deb_i2c("i2c_write i2caddr %x, reg %x, len %d data ", i2caddr,
 357                 reg, len);
 358         debug_dump(data, len, deb_i2c);
 359
 360         for (i = 0; i < len; i++) {
 361                 buf[0] = i2caddr;
 362                 buf[1] = reg + (u8) i;
 363                 buf[2] = data[i];
 364                 ret =
 365                     af9005_write_tuner_registers(d,
 366                                                  APO_REG_I2C_RW_SILICON_TUNER,
 367                                                  buf, 3);
 368                 if (ret) {
 369                         deb_i2c("i2c_write failed\n");
 370                         return ret;
 371                 }
 372         }
 373         deb_i2c("i2c_write ok\n");
 374         return 0;
 375 }
 376
 377 static int af9005_i2c_read(struct dvb_usb_device *d, u8 i2caddr, u8 reg,
 378                            u8 * data, int len)
 379 {
 380         int ret, i;
 381         u8 temp;
 382         deb_i2c("i2c_read i2caddr %x, reg %x, len %d\n ", i2caddr, reg, len);
 383         for (i = 0; i < len; i++) {
 384                 temp = reg + i;
 385                 ret =
 386                     af9005_read_tuner_registers(d,
 387                                                 APO_REG_I2C_RW_SILICON_TUNER,
 388                                                 i2caddr, &temp, 1);
 389                 if (ret) {
 390                         deb_i2c("i2c_read failed\n");
 391                         return ret;
 392                 }
 393                 data[i] = temp;
 394         }
 395         deb_i2c("i2c data read: ");
 396         debug_dump(data, len, deb_i2c);
 397         return 0;
 398 }
 399
 400 static int af9005_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 401                            int num)
 402 {
 403         /* only implements what the mt2060 module does, don't know how
 404            to make it really generic */
 405         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 406         int ret;
 407         u8 reg, addr;
 408         u8 *value;
 409
 410         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 411                 return -EAGAIN;
 412
 413         if (num > 2)
 414                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
 415
 416         if (num == 2) {
 417                 /* reads a single register */
 418                 reg = *msg[0].buf;
 419                 addr = msg[0].addr;
 420                 value = msg[1].buf;
 421                 ret = af9005_i2c_read(d, addr, reg, value, 1);
 422                 if (ret == 0)
 423                         ret = 2;
 424         } else {
 425                 if (msg[0].len < 2) {
 426                         ret = -EOPNOTSUPP;
 427                         goto unlock;
 428                 }
 429                 /* write one or more registers */
 430                 reg = msg[0].buf[0];
 431                 addr = msg[0].addr;
 432                 value = &msg[0].buf[1];
 433                 ret = af9005_i2c_write(d, addr, reg, value, msg[0].len - 1);
 434                 if (ret == 0)
 435                         ret = 1;
 436         }
 437
 438 unlock:
 439         mutex_unlock(&d->i2c_mutex);
 440         return ret;
 441 }
 442
 443 static u32 af9005_i2c_func(struct i2c_adapter *adapter)
 444 {
 445         return I2C_FUNC_I2C;
 446 }
 447
 448 static struct i2c_algorithm af9005_i2c_algo = {
 449         .master_xfer = af9005_i2c_xfer,
 450         .functionality = af9005_i2c_func,
 451 };
 452
 453 int af9005_send_command(struct dvb_usb_device *d, u8 command, u8 * wbuf,
 454                         int wlen, u8 * rbuf, int rlen)
 455 {
 456         struct af9005_device_state *st = d->priv;
 457
 458         int ret, i, packet_len;
 459         u8 seq;
 460
 461         if (wlen < 0) {
 462                 err("send command, wlen less than 0 bytes. Makes no sense.");
 463                 return -EINVAL;
 464         }
 465         if (wlen > 54) {
 466                 err("send command, wlen more than 54 bytes. Not supported.");
 467                 return -EINVAL;
 468         }
 469         if (rlen > 54) {
 470                 err("send command, rlen more than 54 bytes. Not supported.");
 471                 return -EINVAL;
 472         }
 473         packet_len = wlen + 5;
 474
 475         mutex_lock(&d->data_mutex);
 476
 477         st->data[0] = (u8) (packet_len & 0xff);
 478         st->data[1] = (u8) ((packet_len & 0xff00) >> 8);
 479
 480         st->data[2] = 0x26;             /* packet type */
 481         st->data[3] = wlen + 3;
 482         st->data[4] = seq = st->sequence++;
 483         st->data[5] = command;
 484         st->data[6] = wlen;
 485         for (i = 0; i < wlen; i++)
 486                 st->data[7 + i] = wbuf[i];
 487         ret = dvb_usb_generic_rw(d, st->data, wlen + 7, st->data, rlen + 7, 0);
 488         if (st->data[2] != 0x27) {
 489                 err("send command, wrong reply code.");
 490                 ret = -EIO;
 491         } else if (st->data[4] != seq) {
 492                 err("send command, wrong sequence in reply.");
 493                 ret = -EIO;
 494         } else if (st->data[5] != 0x01) {
 495                 err("send command, wrong status code in reply.");
 496                 ret = -EIO;
 497         } else if (st->data[6] != rlen) {
 498                 err("send command, invalid data length in reply.");
 499                 ret = -EIO;
 500         }
 501         if (!ret) {
 502                 for (i = 0; i < rlen; i++)
 503                         rbuf[i] = st->data[i + 7];
 504         }
 505
 506         mutex_unlock(&d->data_mutex);
 507         return ret;
 508 }
 509
 510 int af9005_read_eeprom(struct dvb_usb_device *d, u8 address, u8 * values,
 511                        int len)
 512 {
 513         struct af9005_device_state *st = d->priv;
 514         u8 seq;
 515         int ret, i;
 516
 517         mutex_lock(&d->data_mutex);
 518
 519         memset(st->data, 0, sizeof(st->data));
 520
 521         st->data[0] = 14;               /* length of rest of packet low */
 522         st->data[1] = 0;                /* length of rest of packer high */
 523
 524         st->data[2] = 0x2a;             /* read/write eeprom */
 525
 526         st->data[3] = 12;               /* size */
 527
 528         st->data[4] = seq = st->sequence++;
 529
 530         st->data[5] = 0;                /* read */
 531
 532         st->data[6] = len;
 533         st->data[7] = address;
 534         ret = dvb_usb_generic_rw(d, st->data, 16, st->data, 14, 0);
 535         if (st->data[2] != 0x2b) {
 536                 err("Read eeprom, invalid reply code");
 537                 ret = -EIO;
 538         } else if (st->data[3] != 10) {
 539                 err("Read eeprom, invalid reply length");
 540                 ret = -EIO;
 541         } else if (st->data[4] != seq) {
 542                 err("Read eeprom, wrong sequence in reply ");
 543                 ret = -EIO;
 544         } else if (st->data[5] != 1) {
 545                 err("Read eeprom, wrong status in reply ");
 546                 ret = -EIO;
 547         }
 548
 549         if (!ret) {
 550                 for (i = 0; i < len; i++)
 551                         values[i] = st->data[6 + i];
 552         }
 553         mutex_unlock(&d->data_mutex);
 554
 555         return ret;
 556 }
 557
 558 static int af9005_boot_packet(struct usb_device *udev, int type, u8 *reply,
 559                               u8 *buf, int size)
 560 {
 561         u16 checksum;
 562         int act_len = 0, i, ret;
 563
 564         memset(buf, 0, size);
 565         buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);
 566         buf[1] = (u8) ((FW_BULKOUT_SIZE >> 8) & 0xff);
 567         switch (type) {
 568         case FW_CONFIG:
 569                 buf[2] = 0x11;
 570                 buf[3] = 0x04;
 571                 buf[4] = 0x00;  /* sequence number, original driver doesn't increment it here */
 572                 buf[5] = 0x03;
 573                 checksum = buf[4] + buf[5];
 574                 buf[6] = (u8) ((checksum >> 8) & 0xff);
 575                 buf[7] = (u8) (checksum & 0xff);
 576                 break;
 577         case FW_CONFIRM:
 578                 buf[2] = 0x11;
 579                 buf[3] = 0x04;
 580                 buf[4] = 0x00;  /* sequence number, original driver doesn't increment it here */
 581                 buf[5] = 0x01;
 582                 checksum = buf[4] + buf[5];
 583                 buf[6] = (u8) ((checksum >> 8) & 0xff);
 584                 buf[7] = (u8) (checksum & 0xff);
 585                 break;
 586         case FW_BOOT:
 587                 buf[2] = 0x10;
 588                 buf[3] = 0x08;
 589                 buf[4] = 0x00;  /* sequence number, original driver doesn't increment it here */
 590                 buf[5] = 0x97;
 591                 buf[6] = 0xaa;
 592                 buf[7] = 0x55;
 593                 buf[8] = 0xa5;
 594                 buf[9] = 0x5a;
 595                 checksum = 0;
 596                 for (i = 4; i <= 9; i++)
 597                         checksum += buf[i];
 598                 buf[10] = (u8) ((checksum >> 8) & 0xff);
 599                 buf[11] = (u8) (checksum & 0xff);
 600                 break;
 601         default:
 602                 err("boot packet invalid boot packet type");
 603                 return -EINVAL;
 604         }
 605         deb_fw(">>> ");
 606         debug_dump(buf, FW_BULKOUT_SIZE + 2, deb_fw);
 607
 608         ret = usb_bulk_msg(udev,
 609                            usb_sndbulkpipe(udev, 0x02),
 610                            buf, FW_BULKOUT_SIZE + 2, &act_len, 2000);
 611         if (ret)
 612                 err("boot packet bulk message failed: %d (%d/%d)", ret,
 613                     FW_BULKOUT_SIZE + 2, act_len);
 614         else
 615                 ret = act_len != FW_BULKOUT_SIZE + 2 ? -1 : 0;
 616         if (ret)
 617                 return ret;
 618         memset(buf, 0, 9);
 619         ret = usb_bulk_msg(udev,
 620                            usb_rcvbulkpipe(udev, 0x01), buf, 9, &act_len, 2000);
 621         if (ret) {
 622                 err("boot packet recv bulk message failed: %d", ret);
 623                 return ret;
 624         }
 625         deb_fw("<<< ");
 626         debug_dump(buf, act_len, deb_fw);
 627         checksum = 0;
 628         switch (type) {
 629         case FW_CONFIG:
 630                 if (buf[2] != 0x11) {
 631                         err("boot bad config header.");
 632                         return -EIO;
 633                 }
 634                 if (buf[3] != 0x05) {
 635                         err("boot bad config size.");
 636                         return -EIO;
 637                 }
 638                 if (buf[4] != 0x00) {
 639                         err("boot bad config sequence.");
 640                         return -EIO;
 641                 }
 642                 if (buf[5] != 0x04) {
 643                         err("boot bad config subtype.");
 644                         return -EIO;
 645                 }
 646                 for (i = 4; i <= 6; i++)
 647                         checksum += buf[i];
 648                 if (buf[7] * 256 + buf[8] != checksum) {
 649                         err("boot bad config checksum.");
 650                         return -EIO;
 651                 }
 652                 *reply = buf[6];
 653                 break;
 654         case FW_CONFIRM:
 655                 if (buf[2] != 0x11) {
 656                         err("boot bad confirm header.");
 657                         return -EIO;
 658                 }
 659                 if (buf[3] != 0x05) {
 660                         err("boot bad confirm size.");
 661                         return -EIO;
 662                 }
 663                 if (buf[4] != 0x00) {
 664                         err("boot bad confirm sequence.");
 665                         return -EIO;
 666                 }
 667                 if (buf[5] != 0x02) {
 668                         err("boot bad confirm subtype.");
 669                         return -EIO;
 670                 }
 671                 for (i = 4; i <= 6; i++)
 672                         checksum += buf[i];
 673                 if (buf[7] * 256 + buf[8] != checksum) {
 674                         err("boot bad confirm checksum.");
 675                         return -EIO;
 676                 }
 677                 *reply = buf[6];
 678                 break;
 679         case FW_BOOT:
 680                 if (buf[2] != 0x10) {
 681                         err("boot bad boot header.");
 682                         return -EIO;
 683                 }
 684                 if (buf[3] != 0x05) {
 685                         err("boot bad boot size.");
 686                         return -EIO;
 687                 }
 688                 if (buf[4] != 0x00) {
 689                         err("boot bad boot sequence.");
 690                         return -EIO;
 691                 }
 692                 if (buf[5] != 0x01) {
 693                         err("boot bad boot pattern 01.");
 694                         return -EIO;
 695                 }
 696                 if (buf[6] != 0x10) {
 697                         err("boot bad boot pattern 10.");
 698                         return -EIO;
 699                 }
 700                 for (i = 4; i <= 6; i++)
 701                         checksum += buf[i];
 702                 if (buf[7] * 256 + buf[8] != checksum) {
 703                         err("boot bad boot checksum.");
 704                         return -EIO;
 705                 }
 706                 break;
 707
 708         }
 709
 710         return 0;
 711 }
 712
 713 static int af9005_download_firmware(struct usb_device *udev, const struct firmware *fw)
 714 {
 715         int i, packets, ret, act_len;
 716
 717         u8 *buf;
 718         u8 reply;
 719
 720         buf = kmalloc(FW_BULKOUT_SIZE + 2, GFP_KERNEL);
 721         if (!buf)
 722                 return -ENOMEM;
 723
 724         ret = af9005_boot_packet(udev, FW_CONFIG, &reply, buf,
 725                                  FW_BULKOUT_SIZE + 2);
 726         if (ret)
 727                 goto err;
 728         if (reply != 0x01) {
 729                 err("before downloading firmware, FW_CONFIG expected 0x01, received 0x%x", reply);
 730                 ret = -EIO;
 731                 goto err;
 732         }
 733         packets = fw->size / FW_BULKOUT_SIZE;
 734         buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);
 735         buf[1] = (u8) ((FW_BULKOUT_SIZE >> 8) & 0xff);
 736         for (i = 0; i < packets; i++) {
 737                 memcpy(&buf[2], fw->data + i * FW_BULKOUT_SIZE,
 738                        FW_BULKOUT_SIZE);
 739                 deb_fw(">>> ");
 740                 debug_dump(buf, FW_BULKOUT_SIZE + 2, deb_fw);
 741                 ret = usb_bulk_msg(udev,
 742                                    usb_sndbulkpipe(udev, 0x02),
 743                                    buf, FW_BULKOUT_SIZE + 2, &act_len, 1000);
 744                 if (ret) {
 745                         err("firmware download failed at packet %d with code %d", i, ret);
 746                         goto err;
 747                 }
 748         }
 749         ret = af9005_boot_packet(udev, FW_CONFIRM, &reply,
 750                                  buf, FW_BULKOUT_SIZE + 2);
 751         if (ret)
 752                 goto err;
 753         if (reply != (u8) (packets & 0xff)) {
 754                 err("after downloading firmware, FW_CONFIRM expected 0x%x, received 0x%x", packets & 0xff, reply);
 755                 ret = -EIO;
 756                 goto err;
 757         }
 758         ret = af9005_boot_packet(udev, FW_BOOT, &reply, buf,
 759                                  FW_BULKOUT_SIZE + 2);
 760         if (ret)
 761                 goto err;
 762         ret = af9005_boot_packet(udev, FW_CONFIG, &reply, buf,
 763                                  FW_BULKOUT_SIZE + 2);
 764         if (ret)
 765                 goto err;
 766         if (reply != 0x02) {
 767                 err("after downloading firmware, FW_CONFIG expected 0x02, received 0x%x", reply);
 768                 ret = -EIO;
 769                 goto err;
 770         }
 771
 772 err:
 773         kfree(buf);
 774         return ret;
 775
 776 }
 777
 778 int af9005_led_control(struct dvb_usb_device *d, int onoff)
 779 {
 780         struct af9005_device_state *st = d->priv;
 781         int temp, ret;
 782
 783         if (onoff && dvb_usb_af9005_led)
 784                 temp = 1;
 785         else
 786                 temp = 0;
 787         if (st->led_state != temp) {
 788                 ret =
 789                     af9005_write_register_bits(d, xd_p_reg_top_locken1,
 790                                                reg_top_locken1_pos,
 791                                                reg_top_locken1_len, temp);
 792                 if (ret)
 793                         return ret;
 794                 ret =
 795                     af9005_write_register_bits(d, xd_p_reg_top_lock1,
 796                                                reg_top_lock1_pos,
 797                                                reg_top_lock1_len, temp);
 798                 if (ret)
 799                         return ret;
 800                 st->led_state = temp;
 801         }
 802         return 0;
 803 }
 804
 805 static int af9005_frontend_attach(struct dvb_usb_adapter *adap)
 806 {
 807         u8 buf[8];
 808         int i;
 809
 810         /* without these calls the first commands after downloading
 811            the firmware fail. I put these calls here to simulate
 812            what it is done in dvb-usb-init.c.
 813          */
 814         struct usb_device *udev = adap->dev->udev;
 815         usb_clear_halt(udev, usb_sndbulkpipe(udev, 2));
 816         usb_clear_halt(udev, usb_rcvbulkpipe(udev, 1));
 817         if (dvb_usb_af9005_dump_eeprom) {
 818                 printk("EEPROM DUMP\n");
 819                 for (i = 0; i < 255; i += 8) {
 820                         af9005_read_eeprom(adap->dev, i, buf, 8);
 821                         debug_dump(buf, 8, printk);
 822                 }
 823         }
 824         adap->fe_adap[0].fe = af9005_fe_attach(adap->dev);
 825         return 0;
 826 }
 827
 828 static int af9005_rc_query(struct dvb_usb_device *d, u32 * event, int *state)
 829 {
 830         struct af9005_device_state *st = d->priv;
 831         int ret, len;
 832         u8 seq;
 833
 834         *state = REMOTE_NO_KEY_PRESSED;
 835         if (rc_decode == NULL) {
 836                 /* it shouldn't never come here */
 837                 return 0;
 838         }
 839
 840         mutex_lock(&d->data_mutex);
 841
 842         /* deb_info("rc_query\n"); */
 843         st->data[0] = 3;                /* rest of packet length low */
 844         st->data[1] = 0;                /* rest of packet length high */
 845         st->data[2] = 0x40;             /* read remote */
 846         st->data[3] = 1;                /* rest of packet length */
 847         st->data[4] = seq = st->sequence++;     /* sequence number */
 848         ret = dvb_usb_generic_rw(d, st->data, 5, st->data, 256, 0);
 849         if (ret) {
 850                 err("rc query failed");
 851                 goto ret;
 852         }
 853         if (st->data[2] != 0x41) {
 854                 err("rc query bad header.");
 855                 ret = -EIO;
 856                 goto ret;
 857         } else if (st->data[4] != seq) {
 858                 err("rc query bad sequence.");
 859                 ret = -EIO;
 860                 goto ret;
 861         }
 862         len = st->data[5];
 863         if (len > 246) {
 864                 err("rc query invalid length");
 865                 ret = -EIO;
 866                 goto ret;
 867         }
 868         if (len > 0) {
 869                 deb_rc("rc data (%d) ", len);
 870                 debug_dump((st->data + 6), len, deb_rc);
 871                 ret = rc_decode(d, &st->data[6], len, event, state);
 872                 if (ret) {
 873                         err("rc_decode failed");
 874                         goto ret;
 875                 } else {
 876                         deb_rc("rc_decode state %x event %x\n", *state, *event);
 877                         if (*state == REMOTE_KEY_REPEAT)
 878                                 *event = d->last_event;
 879                 }
 880         }
 881
 882 ret:
 883         mutex_unlock(&d->data_mutex);
 884         return ret;
 885 }
 886
 887 static int af9005_power_ctrl(struct dvb_usb_device *d, int onoff)
 888 {
 889
 890         return 0;
 891 }
 892
 893 static int af9005_pid_filter_control(struct dvb_usb_adapter *adap, int onoff)
 894 {
 895         int ret;
 896         deb_info("pid filter control  onoff %d\n", onoff);
 897         if (onoff) {
 898                 ret =
 899                     af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 1);
 900                 if (ret)
 901                         return ret;
 902                 ret =
 903                     af9005_write_register_bits(adap->dev,
 904                                                XD_MP2IF_DMX_CTRL, 1, 1, 1);
 905                 if (ret)
 906                         return ret;
 907                 ret =
 908                     af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 1);
 909         } else
 910                 ret =
 911                     af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 0);
 912         if (ret)
 913                 return ret;
 914         deb_info("pid filter control ok\n");
 915         return 0;
 916 }
 917
 918 static int af9005_pid_filter(struct dvb_usb_adapter *adap, int index,
 919                              u16 pid, int onoff)
 920 {
 921         u8 cmd = index & 0x1f;
 922         int ret;
 923         deb_info("set pid filter, index %d, pid %x, onoff %d\n", index,
 924                  pid, onoff);
 925         if (onoff) {
 926                 /* cannot use it as pid_filter_ctrl since it has to be done
 927                    before setting the first pid */
 928                 if (adap->feedcount == 1) {
 929                         deb_info("first pid set, enable pid table\n");
 930                         ret = af9005_pid_filter_control(adap, onoff);
 931                         if (ret)
 932                                 return ret;
 933                 }
 934                 ret =
 935                     af9005_write_ofdm_register(adap->dev,
 936                                                XD_MP2IF_PID_DATA_L,
 937                                                (u8) (pid & 0xff));
 938                 if (ret)
 939                         return ret;
 940                 ret =
 941                     af9005_write_ofdm_register(adap->dev,
 942                                                XD_MP2IF_PID_DATA_H,
 943                                                (u8) (pid >> 8));
 944                 if (ret)
 945                         return ret;
 946                 cmd |= 0x20 | 0x40;
 947         } else {
 948                 if (adap->feedcount == 0) {
 949                         deb_info("last pid unset, disable pid table\n");
 950                         ret = af9005_pid_filter_control(adap, onoff);
 951                         if (ret)
 952                                 return ret;
 953                 }
 954         }
 955         ret = af9005_write_ofdm_register(adap->dev, XD_MP2IF_PID_IDX, cmd);
 956         if (ret)
 957                 return ret;
 958         deb_info("set pid ok\n");
 959         return 0;
 960 }
 961
 962 static int af9005_identify_state(struct usb_device *udev,
 963                                  const struct dvb_usb_device_properties *props,
 964                                  const struct dvb_usb_device_description **desc,
 965                                  int *cold)
 966 {
 967         int ret;
 968         u8 reply, *buf;
 969
 970         buf = kmalloc(FW_BULKOUT_SIZE + 2, GFP_KERNEL);
 971         if (!buf)
 972                 return -ENOMEM;
 973
 974         ret = af9005_boot_packet(udev, FW_CONFIG, &reply,
 975                                  buf, FW_BULKOUT_SIZE + 2);
 976         if (ret)
 977                 goto err;
 978         deb_info("result of FW_CONFIG in identify state %d\n", reply);
 979         if (reply == 0x01)
 980                 *cold = 1;
 981         else if (reply == 0x02)
 982                 *cold = 0;
 983         else
 984                 ret = -EIO;
 985         if (!ret)
 986                 deb_info("Identify state cold = %d\n", *cold);
 987
 988 err:
 989         kfree(buf);
 990         return ret;
 991 }
 992
 993 static struct dvb_usb_device_properties af9005_properties;
 994
 995 static int af9005_usb_probe(struct usb_interface *intf,
 996                             const struct usb_device_id *id)
 997 {
 998         return dvb_usb_device_init(intf, &af9005_properties,
 999                                   THIS_MODULE, NULL, adapter_nr);
1000 }
1001
1002 enum {
1003         AFATECH_AF9005,
1004         TERRATEC_CINERGY_T_USB_XE,
1005         ANSONIC_DVBT_USB,
1006 };
1007
1008 static struct usb_device_id af9005_usb_table[] = {
1009         DVB_USB_DEV(AFATECH, AFATECH_AF9005),
1010         DVB_USB_DEV(TERRATEC, TERRATEC_CINERGY_T_USB_XE),
1011         DVB_USB_DEV(ANSONIC, ANSONIC_DVBT_USB),
1012         { }
1013 };
1014
1015 MODULE_DEVICE_TABLE(usb, af9005_usb_table);
1016
1017 static struct dvb_usb_device_properties af9005_properties = {
1018         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
1019
1020         .usb_ctrl = DEVICE_SPECIFIC,
1021         .firmware = "/*(DEBLOBBED)*/",
1022         .download_firmware = af9005_download_firmware,
1023         .no_reconnect = 1,
1024
1025         .size_of_priv = sizeof(struct af9005_device_state),
1026
1027         .num_adapters = 1,
1028         .adapter = {
1029                     {
1030                     .num_frontends = 1,
1031                     .fe = {{
1032                      .caps =
1033                      DVB_USB_ADAP_HAS_PID_FILTER |
1034                      DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
1035                      .pid_filter_count = 32,
1036                      .pid_filter = af9005_pid_filter,
1037                      /* .pid_filter_ctrl = af9005_pid_filter_control, */
1038                      .frontend_attach = af9005_frontend_attach,
1039                      /* .tuner_attach     = af9005_tuner_attach, */
1040                      /* parameter for the MPEG2-data transfer */
1041                      .stream = {
1042                                 .type = USB_BULK,
1043                                 .count = 10,
1044                                 .endpoint = 0x04,
1045                                 .u = {
1046                                       .bulk = {
1047                                                .buffersize = 4096,      /* actual size seen is 3948 */
1048                                                }
1049                                       }
1050                                 },
1051                      }},
1052                      }
1053                     },
1054         .power_ctrl = af9005_power_ctrl,
1055         .identify_state = af9005_identify_state,
1056
1057         .i2c_algo = &af9005_i2c_algo,
1058
1059         .rc.legacy = {
1060                 .rc_interval = 200,
1061                 .rc_map_table = NULL,
1062                 .rc_map_size = 0,
1063                 .rc_query = af9005_rc_query,
1064         },
1065
1066         .generic_bulk_ctrl_endpoint          = 2,
1067         .generic_bulk_ctrl_endpoint_response = 1,
1068
1069         .num_device_descs = 3,
1070         .devices = {
1071                     {.name = "Afatech DVB-T USB1.1 stick",
1072                      .cold_ids = {&af9005_usb_table[AFATECH_AF9005], NULL},
1073                      .warm_ids = {NULL},
1074                      },
1075                     {.name = "TerraTec Cinergy T USB XE",
1076                      .cold_ids = {&af9005_usb_table[TERRATEC_CINERGY_T_USB_XE], NULL},
1077                      .warm_ids = {NULL},
1078                      },
1079                     {.name = "Ansonic DVB-T USB1.1 stick",
1080                      .cold_ids = {&af9005_usb_table[ANSONIC_DVBT_USB], NULL},
1081                      .warm_ids = {NULL},
1082                      },
1083                     {NULL},
1084                     }
1085 };
1086
1087 /* usb specific object needed to register this driver with the usb subsystem */
1088 static struct usb_driver af9005_usb_driver = {
1089         .name = "dvb_usb_af9005",
1090         .probe = af9005_usb_probe,
1091         .disconnect = dvb_usb_device_exit,
1092         .id_table = af9005_usb_table,
1093 };
1094
1095 /* module stuff */
1096 static int __init af9005_usb_module_init(void)
1097 {
1098         int result;
1099         if ((result = usb_register(&af9005_usb_driver))) {
1100                 err("usb_register failed. (%d)", result);
1101                 return result;
1102         }
1103 #if IS_MODULE(CONFIG_DVB_USB_AF9005) || defined(CONFIG_DVB_USB_AF9005_REMOTE)
1104         /* FIXME: convert to todays kernel IR infrastructure */
1105         rc_decode = symbol_request(af9005_rc_decode);
1106         rc_keys = symbol_request(rc_map_af9005_table);
1107         rc_keys_size = symbol_request(rc_map_af9005_table_size);
1108 #endif
1109         if (rc_decode == NULL || rc_keys == NULL || rc_keys_size == NULL) {
1110                 err("af9005_rc_decode function not found, disabling remote");
1111                 af9005_properties.rc.legacy.rc_query = NULL;
1112         } else {
1113                 af9005_properties.rc.legacy.rc_map_table = rc_keys;
1114                 af9005_properties.rc.legacy.rc_map_size = *rc_keys_size;
1115         }
1116
1117         return 0;
1118 }
1119
1120 static void __exit af9005_usb_module_exit(void)
1121 {
1122         /* release rc decode symbols */
1123         if (rc_decode != NULL)
1124                 symbol_put(af9005_rc_decode);
1125         if (rc_keys != NULL)
1126                 symbol_put(rc_map_af9005_table);
1127         if (rc_keys_size != NULL)
1128                 symbol_put(rc_map_af9005_table_size);
1129         /* deregister this driver from the USB subsystem */
1130         usb_deregister(&af9005_usb_driver);
1131 }
1132
1133 module_init(af9005_usb_module_init);
1134 module_exit(af9005_usb_module_exit);
1135
1136 MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
1137 MODULE_DESCRIPTION("Driver for Afatech 9005 DVB-T USB1.1 stick");
1138 MODULE_VERSION("1.0");
1139 MODULE_LICENSE("GPL");