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   1 /*
   2  *  Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
   3  *
   4  *  Copyright (c) 2007 Xceive Corporation
   5  *  Copyright (c) 2007 Steven Toth <stoth@hauppauge.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/videodev2.h>
  26 #include <linux/delay.h>
  27 #include <linux/dvb/frontend.h>
  28 #include <linux/i2c.h>
  29
  30 #include "dvb_frontend.h"
  31
  32 #include "xc5000.h"
  33 #include "xc5000_priv.h"
  34
  35 static int debug;
  36 module_param(debug, int, 0644);
  37 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
  38
  39 #define dprintk(level,fmt, arg...) if (debug >= level) \
  40         printk(KERN_INFO "%s: " fmt, "xc5000", ## arg)
  41
  42 #define XC5000_DEFAULT_FIRMWARE "dvb-fe-xc5000-1.1.fw"
  43 #define XC5000_DEFAULT_FIRMWARE_SIZE 12332
  44
  45 /* Misc Defines */
  46 #define MAX_TV_STANDARD                 23
  47 #define XC_MAX_I2C_WRITE_LENGTH         64
  48
  49 /* Signal Types */
  50 #define XC_RF_MODE_AIR                  0
  51 #define XC_RF_MODE_CABLE                1
  52
  53 /* Result codes */
  54 #define XC_RESULT_SUCCESS               0
  55 #define XC_RESULT_RESET_FAILURE         1
  56 #define XC_RESULT_I2C_WRITE_FAILURE     2
  57 #define XC_RESULT_I2C_READ_FAILURE      3
  58 #define XC_RESULT_OUT_OF_RANGE          5
  59
  60 /* Product id */
  61 #define XC_PRODUCT_ID_FW_NOT_LOADED     0x2000
  62 #define XC_PRODUCT_ID_FW_LOADED         0x1388
  63
  64 /* Registers */
  65 #define XREG_INIT         0x00
  66 #define XREG_VIDEO_MODE   0x01
  67 #define XREG_AUDIO_MODE   0x02
  68 #define XREG_RF_FREQ      0x03
  69 #define XREG_D_CODE       0x04
  70 #define XREG_IF_OUT       0x05
  71 #define XREG_SEEK_MODE    0x07
  72 #define XREG_POWER_DOWN   0x0A
  73 #define XREG_SIGNALSOURCE 0x0D /* 0=Air, 1=Cable */
  74 #define XREG_SMOOTHEDCVBS 0x0E
  75 #define XREG_XTALFREQ     0x0F
  76 #define XREG_FINERFFREQ   0x10
  77 #define XREG_DDIMODE      0x11
  78
  79 #define XREG_ADC_ENV      0x00
  80 #define XREG_QUALITY      0x01
  81 #define XREG_FRAME_LINES  0x02
  82 #define XREG_HSYNC_FREQ   0x03
  83 #define XREG_LOCK         0x04
  84 #define XREG_FREQ_ERROR   0x05
  85 #define XREG_SNR          0x06
  86 #define XREG_VERSION      0x07
  87 #define XREG_PRODUCT_ID   0x08
  88 #define XREG_BUSY         0x09
  89
  90 /*
  91    Basic firmware description. This will remain with
  92    the driver for documentation purposes.
  93
  94    This represents an I2C firmware file encoded as a
  95    string of unsigned char. Format is as follows:
  96
  97    char[0  ]=len0_MSB  -> len = len_MSB * 256 + len_LSB
  98    char[1  ]=len0_LSB  -> length of first write transaction
  99    char[2  ]=data0 -> first byte to be sent
 100    char[3  ]=data1
 101    char[4  ]=data2
 102    char[   ]=...
 103    char[M  ]=dataN  -> last byte to be sent
 104    char[M+1]=len1_MSB  -> len = len_MSB * 256 + len_LSB
 105    char[M+2]=len1_LSB  -> length of second write transaction
 106    char[M+3]=data0
 107    char[M+4]=data1
 108    ...
 109    etc.
 110
 111    The [len] value should be interpreted as follows:
 112
 113    len= len_MSB _ len_LSB
 114    len=1111_1111_1111_1111   : End of I2C_SEQUENCE
 115    len=0000_0000_0000_0000   : Reset command: Do hardware reset
 116    len=0NNN_NNNN_NNNN_NNNN   : Normal transaction: number of bytes = {1:32767)
 117    len=1WWW_WWWW_WWWW_WWWW   : Wait command: wait for {1:32767} ms
 118
 119    For the RESET and WAIT commands, the two following bytes will contain
 120    immediately the length of the following transaction.
 121
 122 */
 123 typedef struct {
 124         char *Name;
 125         u16 AudioMode;
 126         u16 VideoMode;
 127 } XC_TV_STANDARD;
 128
 129 /* Tuner standards */
 130 #define MN_NTSC_PAL_BTSC        0
 131 #define MN_NTSC_PAL_A2          1
 132 #define MN_NTSC_PAL_EIAJ        2
 133 #define MN_NTSC_PAL_Mono        3
 134 #define BG_PAL_A2               4
 135 #define BG_PAL_NICAM            5
 136 #define BG_PAL_MONO             6
 137 #define I_PAL_NICAM             7
 138 #define I_PAL_NICAM_MONO        8
 139 #define DK_PAL_A2               9
 140 #define DK_PAL_NICAM            10
 141 #define DK_PAL_MONO             11
 142 #define DK_SECAM_A2DK1          12
 143 #define DK_SECAM_A2LDK3         13
 144 #define DK_SECAM_A2MONO         14
 145 #define L_SECAM_NICAM           15
 146 #define LC_SECAM_NICAM          16
 147 #define DTV6                    17
 148 #define DTV8                    18
 149 #define DTV7_8                  19
 150 #define DTV7                    20
 151 #define FM_Radio_INPUT2         21
 152 #define FM_Radio_INPUT1         22
 153
 154 static XC_TV_STANDARD XC5000_Standard[MAX_TV_STANDARD] = {
 155         {"M/N-NTSC/PAL-BTSC", 0x0400, 0x8020},
 156         {"M/N-NTSC/PAL-A2",   0x0600, 0x8020},
 157         {"M/N-NTSC/PAL-EIAJ", 0x0440, 0x8020},
 158         {"M/N-NTSC/PAL-Mono", 0x0478, 0x8020},
 159         {"B/G-PAL-A2",        0x0A00, 0x8049},
 160         {"B/G-PAL-NICAM",     0x0C04, 0x8049},
 161         {"B/G-PAL-MONO",      0x0878, 0x8059},
 162         {"I-PAL-NICAM",       0x1080, 0x8009},
 163         {"I-PAL-NICAM-MONO",  0x0E78, 0x8009},
 164         {"D/K-PAL-A2",        0x1600, 0x8009},
 165         {"D/K-PAL-NICAM",     0x0E80, 0x8009},
 166         {"D/K-PAL-MONO",      0x1478, 0x8009},
 167         {"D/K-SECAM-A2 DK1",  0x1200, 0x8009},
 168         {"D/K-SECAM-A2 L/DK3",0x0E00, 0x8009},
 169         {"D/K-SECAM-A2 MONO", 0x1478, 0x8009},
 170         {"L-SECAM-NICAM",     0x8E82, 0x0009},
 171         {"L'-SECAM-NICAM",    0x8E82, 0x4009},
 172         {"DTV6",              0x00C0, 0x8002},
 173         {"DTV8",              0x00C0, 0x800B},
 174         {"DTV7/8",            0x00C0, 0x801B},
 175         {"DTV7",              0x00C0, 0x8007},
 176         {"FM Radio-INPUT2",   0x9802, 0x9002},
 177         {"FM Radio-INPUT1",   0x0208, 0x9002}
 178 };
 179
 180 static int  xc5000_writeregs(struct xc5000_priv *priv, u8 *buf, u8 len);
 181 static int  xc5000_readregs(struct xc5000_priv *priv, u8 *buf, u8 len);
 182 static void xc5000_TunerReset(struct dvb_frontend *fe);
 183
 184 static int xc_send_i2c_data(struct xc5000_priv *priv, u8 *buf, int len)
 185 {
 186         return xc5000_writeregs(priv, buf, len)
 187                 ? XC_RESULT_I2C_WRITE_FAILURE : XC_RESULT_SUCCESS;
 188 }
 189
 190 static int xc_read_i2c_data(struct xc5000_priv *priv, u8 *buf, int len)
 191 {
 192         return xc5000_readregs(priv, buf, len)
 193                 ? XC_RESULT_I2C_READ_FAILURE : XC_RESULT_SUCCESS;
 194 }
 195
 196 static int xc_reset(struct dvb_frontend *fe)
 197 {
 198         xc5000_TunerReset(fe);
 199         return XC_RESULT_SUCCESS;
 200 }
 201
 202 static void xc_wait(int wait_ms)
 203 {
 204         msleep(wait_ms);
 205 }
 206
 207 static void xc5000_TunerReset(struct dvb_frontend *fe)
 208 {
 209         struct xc5000_priv *priv = fe->tuner_priv;
 210         int ret;
 211
 212         dprintk(1, "%s()\n", __func__);
 213
 214         if (priv->cfg->tuner_callback) {
 215                 ret = priv->cfg->tuner_callback(priv->devptr,
 216                                                 XC5000_TUNER_RESET, 0);
 217                 if (ret)
 218                         printk(KERN_ERR "xc5000: reset failed\n");
 219         } else
 220                 printk(KERN_ERR "xc5000: no tuner reset callback function, fatal\n");
 221 }
 222
 223 static int xc_write_reg(struct xc5000_priv *priv, u16 regAddr, u16 i2cData)
 224 {
 225         u8 buf[4];
 226         int WatchDogTimer = 5;
 227         int result;
 228
 229         buf[0] = (regAddr >> 8) & 0xFF;
 230         buf[1] = regAddr & 0xFF;
 231         buf[2] = (i2cData >> 8) & 0xFF;
 232         buf[3] = i2cData & 0xFF;
 233         result = xc_send_i2c_data(priv, buf, 4);
 234         if (result == XC_RESULT_SUCCESS) {
 235                 /* wait for busy flag to clear */
 236                 while ((WatchDogTimer > 0) && (result == XC_RESULT_SUCCESS)) {
 237                         buf[0] = 0;
 238                         buf[1] = XREG_BUSY;
 239
 240                         result = xc_send_i2c_data(priv, buf, 2);
 241                         if (result == XC_RESULT_SUCCESS) {
 242                                 result = xc_read_i2c_data(priv, buf, 2);
 243                                 if (result == XC_RESULT_SUCCESS) {
 244                                         if ((buf[0] == 0) && (buf[1] == 0)) {
 245                                                 /* busy flag cleared */
 246                                         break;
 247                                         } else {
 248                                                 xc_wait(100); /* wait 5 ms */
 249                                                 WatchDogTimer--;
 250                                         }
 251                                 }
 252                         }
 253                 }
 254         }
 255         if (WatchDogTimer < 0)
 256                 result = XC_RESULT_I2C_WRITE_FAILURE;
 257
 258         return result;
 259 }
 260
 261 static int xc_read_reg(struct xc5000_priv *priv, u16 regAddr, u16 *i2cData)
 262 {
 263         u8 buf[2];
 264         int result;
 265
 266         buf[0] = (regAddr >> 8) & 0xFF;
 267         buf[1] = regAddr & 0xFF;
 268         result = xc_send_i2c_data(priv, buf, 2);
 269         if (result != XC_RESULT_SUCCESS)
 270                 return result;
 271
 272         result = xc_read_i2c_data(priv, buf, 2);
 273         if (result != XC_RESULT_SUCCESS)
 274                 return result;
 275
 276         *i2cData = buf[0] * 256 + buf[1];
 277         return result;
 278 }
 279
 280 static int xc_load_i2c_sequence(struct dvb_frontend *fe, u8 i2c_sequence[])
 281 {
 282         struct xc5000_priv *priv = fe->tuner_priv;
 283
 284         int i, nbytes_to_send, result;
 285         unsigned int len, pos, index;
 286         u8 buf[XC_MAX_I2C_WRITE_LENGTH];
 287
 288         index=0;
 289         while ((i2c_sequence[index]!=0xFF) || (i2c_sequence[index+1]!=0xFF)) {
 290                 len = i2c_sequence[index]* 256 + i2c_sequence[index+1];
 291                 if (len == 0x0000) {
 292                         /* RESET command */
 293                         result = xc_reset(fe);
 294                         index += 2;
 295                         if (result != XC_RESULT_SUCCESS)
 296                                 return result;
 297                 } else if (len & 0x8000) {
 298                         /* WAIT command */
 299                         xc_wait(len & 0x7FFF);
 300                         index += 2;
 301                 } else {
 302                         /* Send i2c data whilst ensuring individual transactions
 303                          * do not exceed XC_MAX_I2C_WRITE_LENGTH bytes.
 304                          */
 305                         index += 2;
 306                         buf[0] = i2c_sequence[index];
 307                         buf[1] = i2c_sequence[index + 1];
 308                         pos = 2;
 309                         while (pos < len) {
 310                                 if ((len - pos) > XC_MAX_I2C_WRITE_LENGTH - 2) {
 311                                         nbytes_to_send = XC_MAX_I2C_WRITE_LENGTH;
 312                                 } else {
 313                                         nbytes_to_send = (len - pos + 2);
 314                                 }
 315                                 for (i=2; i<nbytes_to_send; i++) {
 316                                         buf[i] = i2c_sequence[index + pos + i - 2];
 317                                 }
 318                                 result = xc_send_i2c_data(priv, buf, nbytes_to_send);
 319
 320                                 if (result != XC_RESULT_SUCCESS)
 321                                         return result;
 322
 323                                 pos += nbytes_to_send - 2;
 324                         }
 325                         index += len;
 326                 }
 327         }
 328         return XC_RESULT_SUCCESS;
 329 }
 330
 331 static int xc_initialize(struct xc5000_priv *priv)
 332 {
 333         dprintk(1, "%s()\n", __func__);
 334         return xc_write_reg(priv, XREG_INIT, 0);
 335 }
 336
 337 static int xc_SetTVStandard(struct xc5000_priv *priv,
 338         u16 VideoMode, u16 AudioMode)
 339 {
 340         int ret;
 341         dprintk(1, "%s(0x%04x,0x%04x)\n", __func__, VideoMode, AudioMode);
 342         dprintk(1, "%s() Standard = %s\n",
 343                 __func__,
 344                 XC5000_Standard[priv->video_standard].Name);
 345
 346         ret = xc_write_reg(priv, XREG_VIDEO_MODE, VideoMode);
 347         if (ret == XC_RESULT_SUCCESS)
 348                 ret = xc_write_reg(priv, XREG_AUDIO_MODE, AudioMode);
 349
 350         return ret;
 351 }
 352
 353 static int xc_shutdown(struct xc5000_priv *priv)
 354 {
 355         return 0;
 356         /* Fixme: cannot bring tuner back alive once shutdown
 357          *        without reloading the driver modules.
 358          *    return xc_write_reg(priv, XREG_POWER_DOWN, 0);
 359          */
 360 }
 361
 362 static int xc_SetSignalSource(struct xc5000_priv *priv, u16 rf_mode)
 363 {
 364         dprintk(1, "%s(%d) Source = %s\n", __func__, rf_mode,
 365                 rf_mode == XC_RF_MODE_AIR ? "ANTENNA" : "CABLE");
 366
 367         if ((rf_mode != XC_RF_MODE_AIR) && (rf_mode != XC_RF_MODE_CABLE))
 368         {
 369                 rf_mode = XC_RF_MODE_CABLE;
 370                 printk(KERN_ERR
 371                         "%s(), Invalid mode, defaulting to CABLE",
 372                         __func__);
 373         }
 374         return xc_write_reg(priv, XREG_SIGNALSOURCE, rf_mode);
 375 }
 376
 377 static const struct dvb_tuner_ops xc5000_tuner_ops;
 378
 379 static int xc_set_RF_frequency(struct xc5000_priv *priv, u32 freq_hz)
 380 {
 381         u16 freq_code;
 382
 383         dprintk(1, "%s(%u)\n", __func__, freq_hz);
 384
 385         if ((freq_hz > xc5000_tuner_ops.info.frequency_max) ||
 386                 (freq_hz < xc5000_tuner_ops.info.frequency_min))
 387                 return XC_RESULT_OUT_OF_RANGE;
 388
 389         freq_code = (u16)(freq_hz / 15625);
 390
 391         return xc_write_reg(priv, XREG_RF_FREQ, freq_code);
 392 }
 393
 394
 395 static int xc_set_IF_frequency(struct xc5000_priv *priv, u32 freq_khz)
 396 {
 397         u32 freq_code = (freq_khz * 1024)/1000;
 398         dprintk(1, "%s(freq_khz = %d) freq_code = 0x%x\n",
 399                 __func__, freq_khz, freq_code);
 400
 401         return xc_write_reg(priv, XREG_IF_OUT, freq_code);
 402 }
 403
 404
 405 static int xc_get_ADC_Envelope(struct xc5000_priv *priv, u16 *adc_envelope)
 406 {
 407         return xc_read_reg(priv, XREG_ADC_ENV, adc_envelope);
 408 }
 409
 410 static int xc_get_frequency_error(struct xc5000_priv *priv, u32 *freq_error_hz)
 411 {
 412         int result;
 413         u16 regData;
 414         u32 tmp;
 415
 416         result = xc_read_reg(priv, XREG_FREQ_ERROR, &regData);
 417         if (result)
 418                 return result;
 419
 420         tmp = (u32)regData;
 421         (*freq_error_hz) = (tmp * 15625) / 1000;
 422         return result;
 423 }
 424
 425 static int xc_get_lock_status(struct xc5000_priv *priv, u16 *lock_status)
 426 {
 427         return xc_read_reg(priv, XREG_LOCK, lock_status);
 428 }
 429
 430 static int xc_get_version(struct xc5000_priv *priv,
 431         u8 *hw_majorversion, u8 *hw_minorversion,
 432         u8 *fw_majorversion, u8 *fw_minorversion)
 433 {
 434         u16 data;
 435         int result;
 436
 437         result = xc_read_reg(priv, XREG_VERSION, &data);
 438         if (result)
 439                 return result;
 440
 441         (*hw_majorversion) = (data >> 12) & 0x0F;
 442         (*hw_minorversion) = (data >>  8) & 0x0F;
 443         (*fw_majorversion) = (data >>  4) & 0x0F;
 444         (*fw_minorversion) = data & 0x0F;
 445
 446         return 0;
 447 }
 448
 449 static int xc_get_hsync_freq(struct xc5000_priv *priv, u32 *hsync_freq_hz)
 450 {
 451         u16 regData;
 452         int result;
 453
 454         result = xc_read_reg(priv, XREG_HSYNC_FREQ, &regData);
 455         if (result)
 456                 return result;
 457
 458         (*hsync_freq_hz) = ((regData & 0x0fff) * 763)/100;
 459         return result;
 460 }
 461
 462 static int xc_get_frame_lines(struct xc5000_priv *priv, u16 *frame_lines)
 463 {
 464         return xc_read_reg(priv, XREG_FRAME_LINES, frame_lines);
 465 }
 466
 467 static int xc_get_quality(struct xc5000_priv *priv, u16 *quality)
 468 {
 469         return xc_read_reg(priv, XREG_QUALITY, quality);
 470 }
 471
 472 static u16 WaitForLock(struct xc5000_priv *priv)
 473 {
 474         u16 lockState = 0;
 475         int watchDogCount = 40;
 476
 477         while ((lockState == 0) && (watchDogCount > 0)) {
 478                 xc_get_lock_status(priv, &lockState);
 479                 if (lockState != 1) {
 480                         xc_wait(5);
 481                         watchDogCount--;
 482                 }
 483         }
 484         return lockState;
 485 }
 486
 487 static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz)
 488 {
 489         int found = 0;
 490
 491         dprintk(1, "%s(%u)\n", __func__, freq_hz);
 492
 493         if (xc_set_RF_frequency(priv, freq_hz) != XC_RESULT_SUCCESS)
 494                 return 0;
 495
 496         if (WaitForLock(priv) == 1)
 497                 found = 1;
 498
 499         return found;
 500 }
 501
 502 static int xc5000_readreg(struct xc5000_priv *priv, u16 reg, u16 *val)
 503 {
 504         u8 buf[2] = { reg >> 8, reg & 0xff };
 505         u8 bval[2] = { 0, 0 };
 506         struct i2c_msg msg[2] = {
 507                 { .addr = priv->cfg->i2c_address,
 508                         .flags = 0, .buf = &buf[0], .len = 2 },
 509                 { .addr = priv->cfg->i2c_address,
 510                         .flags = I2C_M_RD, .buf = &bval[0], .len = 2 },
 511         };
 512
 513         if (i2c_transfer(priv->i2c, msg, 2) != 2) {
 514                 printk(KERN_WARNING "xc5000: I2C read failed\n");
 515                 return -EREMOTEIO;
 516         }
 517
 518         *val = (bval[0] << 8) | bval[1];
 519         return 0;
 520 }
 521
 522 static int xc5000_writeregs(struct xc5000_priv *priv, u8 *buf, u8 len)
 523 {
 524         struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
 525                 .flags = 0, .buf = buf, .len = len };
 526
 527         if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
 528                 printk(KERN_ERR "xc5000: I2C write failed (len=%i)\n",
 529                         (int)len);
 530                 return -EREMOTEIO;
 531         }
 532         return 0;
 533 }
 534
 535 static int xc5000_readregs(struct xc5000_priv *priv, u8 *buf, u8 len)
 536 {
 537         struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
 538                 .flags = I2C_M_RD, .buf = buf, .len = len };
 539
 540         if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
 541                 printk(KERN_ERR "xc5000 I2C read failed (len=%i)\n",(int)len);
 542                 return -EREMOTEIO;
 543         }
 544         return 0;
 545 }
 546
 547 static int xc5000_fwupload(struct dvb_frontend* fe)
 548 {
 549         struct xc5000_priv *priv = fe->tuner_priv;
 550         const struct firmware *fw;
 551         int ret;
 552
 553         /* request the firmware, this will block and timeout */
 554         printk(KERN_INFO "xc5000: waiting for firmware upload (%s)...\n",
 555                 XC5000_DEFAULT_FIRMWARE);
 556
 557         ret = request_firmware(&fw, XC5000_DEFAULT_FIRMWARE, &priv->i2c->dev);
 558         if (ret) {
 559                 printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
 560                 ret = XC_RESULT_RESET_FAILURE;
 561                 goto out;
 562         } else {
 563                 printk(KERN_INFO "xc5000: firmware read %Zu bytes.\n",
 564                        fw->size);
 565                 ret = XC_RESULT_SUCCESS;
 566         }
 567
 568         if (fw->size != XC5000_DEFAULT_FIRMWARE_SIZE) {
 569                 printk(KERN_ERR "xc5000: firmware incorrect size\n");
 570                 ret = XC_RESULT_RESET_FAILURE;
 571         } else {
 572                 printk(KERN_INFO "xc5000: firmware upload\n");
 573                 ret = xc_load_i2c_sequence(fe,  fw->data );
 574         }
 575
 576 out:
 577         release_firmware(fw);
 578         return ret;
 579 }
 580
 581 static void xc_debug_dump(struct xc5000_priv *priv)
 582 {
 583         u16 adc_envelope;
 584         u32 freq_error_hz = 0;
 585         u16 lock_status;
 586         u32 hsync_freq_hz = 0;
 587         u16 frame_lines;
 588         u16 quality;
 589         u8 hw_majorversion = 0, hw_minorversion = 0;
 590         u8 fw_majorversion = 0, fw_minorversion = 0;
 591
 592         /* Wait for stats to stabilize.
 593          * Frame Lines needs two frame times after initial lock
 594          * before it is valid.
 595          */
 596         xc_wait(100);
 597
 598         xc_get_ADC_Envelope(priv,  &adc_envelope);
 599         dprintk(1, "*** ADC envelope (0-1023) = %d\n", adc_envelope);
 600
 601         xc_get_frequency_error(priv, &freq_error_hz);
 602         dprintk(1, "*** Frequency error = %d Hz\n", freq_error_hz);
 603
 604         xc_get_lock_status(priv,  &lock_status);
 605         dprintk(1, "*** Lock status (0-Wait, 1-Locked, 2-No-signal) = %d\n",
 606                 lock_status);
 607
 608         xc_get_version(priv,  &hw_majorversion, &hw_minorversion,
 609                 &fw_majorversion, &fw_minorversion);
 610         dprintk(1, "*** HW: V%02x.%02x, FW: V%02x.%02x\n",
 611                 hw_majorversion, hw_minorversion,
 612                 fw_majorversion, fw_minorversion);
 613
 614         xc_get_hsync_freq(priv,  &hsync_freq_hz);
 615         dprintk(1, "*** Horizontal sync frequency = %d Hz\n", hsync_freq_hz);
 616
 617         xc_get_frame_lines(priv,  &frame_lines);
 618         dprintk(1, "*** Frame lines = %d\n", frame_lines);
 619
 620         xc_get_quality(priv,  &quality);
 621         dprintk(1, "*** Quality (0:<8dB, 7:>56dB) = %d\n", quality);
 622 }
 623
 624 static int xc5000_set_params(struct dvb_frontend *fe,
 625         struct dvb_frontend_parameters *params)
 626 {
 627         struct xc5000_priv *priv = fe->tuner_priv;
 628         int ret;
 629
 630         dprintk(1, "%s() frequency=%d (Hz)\n", __func__, params->frequency);
 631
 632         switch(params->u.vsb.modulation) {
 633         case VSB_8:
 634         case VSB_16:
 635                 dprintk(1, "%s() VSB modulation\n", __func__);
 636                 priv->rf_mode = XC_RF_MODE_AIR;
 637                 priv->freq_hz = params->frequency - 1750000;
 638                 priv->bandwidth = BANDWIDTH_6_MHZ;
 639                 priv->video_standard = DTV6;
 640                 break;
 641         case QAM_64:
 642         case QAM_256:
 643         case QAM_AUTO:
 644                 dprintk(1, "%s() QAM modulation\n", __func__);
 645                 priv->rf_mode = XC_RF_MODE_CABLE;
 646                 priv->freq_hz = params->frequency - 1750000;
 647                 priv->bandwidth = BANDWIDTH_6_MHZ;
 648                 priv->video_standard = DTV6;
 649                 break;
 650         default:
 651                 return -EINVAL;
 652         }
 653
 654         dprintk(1, "%s() frequency=%d (compensated)\n",
 655                 __func__, priv->freq_hz);
 656
 657         ret = xc_SetSignalSource(priv, priv->rf_mode);
 658         if (ret != XC_RESULT_SUCCESS) {
 659                 printk(KERN_ERR
 660                         "xc5000: xc_SetSignalSource(%d) failed\n",
 661                         priv->rf_mode);
 662                 return -EREMOTEIO;
 663         }
 664
 665         ret = xc_SetTVStandard(priv,
 666                 XC5000_Standard[priv->video_standard].VideoMode,
 667                 XC5000_Standard[priv->video_standard].AudioMode);
 668         if (ret != XC_RESULT_SUCCESS) {
 669                 printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
 670                 return -EREMOTEIO;
 671         }
 672
 673         ret = xc_set_IF_frequency(priv, priv->cfg->if_khz);
 674         if (ret != XC_RESULT_SUCCESS) {
 675                 printk(KERN_ERR "xc5000: xc_Set_IF_frequency(%d) failed\n",
 676                         priv->cfg->if_khz);
 677                 return -EIO;
 678         }
 679
 680         xc_tune_channel(priv, priv->freq_hz);
 681
 682         if (debug)
 683                 xc_debug_dump(priv);
 684
 685         return 0;
 686 }
 687
 688 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe);
 689
 690 static int xc5000_set_analog_params(struct dvb_frontend *fe,
 691         struct analog_parameters *params)
 692 {
 693         struct xc5000_priv *priv = fe->tuner_priv;
 694         int ret;
 695
 696         if(priv->fwloaded == 0)
 697                 xc_load_fw_and_init_tuner(fe);
 698
 699         dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n",
 700                 __func__, params->frequency);
 701
 702         priv->rf_mode = XC_RF_MODE_CABLE; /* Fix me: it could be air. */
 703
 704         /* params->frequency is in units of 62.5khz */
 705         priv->freq_hz = params->frequency * 62500;
 706
 707         /* FIX ME: Some video standards may have several possible audio
 708                    standards. We simply default to one of them here.
 709          */
 710         if(params->std & V4L2_STD_MN) {
 711                 /* default to BTSC audio standard */
 712                 priv->video_standard = MN_NTSC_PAL_BTSC;
 713                 goto tune_channel;
 714         }
 715
 716         if(params->std & V4L2_STD_PAL_BG) {
 717                 /* default to NICAM audio standard */
 718                 priv->video_standard = BG_PAL_NICAM;
 719                 goto tune_channel;
 720         }
 721
 722         if(params->std & V4L2_STD_PAL_I) {
 723                 /* default to NICAM audio standard */
 724                 priv->video_standard = I_PAL_NICAM;
 725                 goto tune_channel;
 726         }
 727
 728         if(params->std & V4L2_STD_PAL_DK) {
 729                 /* default to NICAM audio standard */
 730                 priv->video_standard = DK_PAL_NICAM;
 731                 goto tune_channel;
 732         }
 733
 734         if(params->std & V4L2_STD_SECAM_DK) {
 735                 /* default to A2 DK1 audio standard */
 736                 priv->video_standard = DK_SECAM_A2DK1;
 737                 goto tune_channel;
 738         }
 739
 740         if(params->std & V4L2_STD_SECAM_L) {
 741                 priv->video_standard = L_SECAM_NICAM;
 742                 goto tune_channel;
 743         }
 744
 745         if(params->std & V4L2_STD_SECAM_LC) {
 746                 priv->video_standard = LC_SECAM_NICAM;
 747                 goto tune_channel;
 748         }
 749
 750 tune_channel:
 751         ret = xc_SetSignalSource(priv, priv->rf_mode);
 752         if (ret != XC_RESULT_SUCCESS) {
 753         printk(KERN_ERR
 754                         "xc5000: xc_SetSignalSource(%d) failed\n",
 755                         priv->rf_mode);
 756                 return -EREMOTEIO;
 757         }
 758
 759         ret = xc_SetTVStandard(priv,
 760                 XC5000_Standard[priv->video_standard].VideoMode,
 761                 XC5000_Standard[priv->video_standard].AudioMode);
 762         if (ret != XC_RESULT_SUCCESS) {
 763                 printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
 764                 return -EREMOTEIO;
 765         }
 766
 767         xc_tune_channel(priv, priv->freq_hz);
 768
 769         if (debug)
 770                 xc_debug_dump(priv);
 771
 772         return 0;
 773 }
 774
 775 static int xc5000_get_frequency(struct dvb_frontend *fe, u32 *freq)
 776 {
 777         struct xc5000_priv *priv = fe->tuner_priv;
 778         dprintk(1, "%s()\n", __func__);
 779         *freq = priv->freq_hz;
 780         return 0;
 781 }
 782
 783 static int xc5000_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
 784 {
 785         struct xc5000_priv *priv = fe->tuner_priv;
 786         dprintk(1, "%s()\n", __func__);
 787
 788         *bw = priv->bandwidth;
 789         return 0;
 790 }
 791
 792 static int xc5000_get_status(struct dvb_frontend *fe, u32 *status)
 793 {
 794         struct xc5000_priv *priv = fe->tuner_priv;
 795         u16 lock_status = 0;
 796
 797         xc_get_lock_status(priv, &lock_status);
 798
 799         dprintk(1, "%s() lock_status = 0x%08x\n", __func__, lock_status);
 800
 801         *status = lock_status;
 802
 803         return 0;
 804 }
 805
 806 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe)
 807 {
 808         struct xc5000_priv *priv = fe->tuner_priv;
 809         int ret = 0;
 810
 811         if (priv->fwloaded == 0) {
 812                 ret = xc5000_fwupload(fe);
 813                 if (ret != XC_RESULT_SUCCESS)
 814                         return ret;
 815                 priv->fwloaded = 1;
 816         }
 817
 818         /* Start the tuner self-calibration process */
 819         ret |= xc_initialize(priv);
 820
 821         /* Wait for calibration to complete.
 822          * We could continue but XC5000 will clock stretch subsequent
 823          * I2C transactions until calibration is complete.  This way we
 824          * don't have to rely on clock stretching working.
 825          */
 826         xc_wait( 100 );
 827
 828         /* Default to "CABLE" mode */
 829         ret |= xc_write_reg(priv, XREG_SIGNALSOURCE, XC_RF_MODE_CABLE);
 830
 831         return ret;
 832 }
 833
 834 static int xc5000_sleep(struct dvb_frontend *fe)
 835 {
 836         struct xc5000_priv *priv = fe->tuner_priv;
 837         int ret;
 838
 839         dprintk(1, "%s()\n", __func__);
 840
 841         /* On Pinnacle PCTV HD 800i, the tuner cannot be reinitialized
 842          * once shutdown without reloading the driver. Maybe I am not
 843          * doing something right.
 844          *
 845          */
 846
 847         ret = xc_shutdown(priv);
 848         if(ret != XC_RESULT_SUCCESS) {
 849                 printk(KERN_ERR
 850                         "xc5000: %s() unable to shutdown tuner\n",
 851                         __func__);
 852                 return -EREMOTEIO;
 853         }
 854         else {
 855                 /* priv->fwloaded = 0; */
 856                 return XC_RESULT_SUCCESS;
 857         }
 858 }
 859
 860 static int xc5000_init(struct dvb_frontend *fe)
 861 {
 862         struct xc5000_priv *priv = fe->tuner_priv;
 863         dprintk(1, "%s()\n", __func__);
 864
 865         if (xc_load_fw_and_init_tuner(fe) != XC_RESULT_SUCCESS) {
 866                 printk(KERN_ERR "xc5000: Unable to initialise tuner\n");
 867                 return -EREMOTEIO;
 868         }
 869
 870         if (debug)
 871                 xc_debug_dump(priv);
 872
 873         return 0;
 874 }
 875
 876 static int xc5000_release(struct dvb_frontend *fe)
 877 {
 878         dprintk(1, "%s()\n", __func__);
 879         kfree(fe->tuner_priv);
 880         fe->tuner_priv = NULL;
 881         return 0;
 882 }
 883
 884 static const struct dvb_tuner_ops xc5000_tuner_ops = {
 885         .info = {
 886                 .name           = "Xceive XC5000",
 887                 .frequency_min  =    1000000,
 888                 .frequency_max  = 1023000000,
 889                 .frequency_step =      50000,
 890         },
 891
 892         .release           = xc5000_release,
 893         .init              = xc5000_init,
 894         .sleep             = xc5000_sleep,
 895
 896         .set_params        = xc5000_set_params,
 897         .set_analog_params = xc5000_set_analog_params,
 898         .get_frequency     = xc5000_get_frequency,
 899         .get_bandwidth     = xc5000_get_bandwidth,
 900         .get_status        = xc5000_get_status
 901 };
 902
 903 struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
 904                                    struct i2c_adapter *i2c,
 905                                    struct xc5000_config *cfg, void *devptr)
 906 {
 907         struct xc5000_priv *priv = NULL;
 908         u16 id = 0;
 909
 910         dprintk(1, "%s()\n", __func__);
 911
 912         priv = kzalloc(sizeof(struct xc5000_priv), GFP_KERNEL);
 913         if (priv == NULL)
 914                 return NULL;
 915
 916         priv->cfg = cfg;
 917         priv->bandwidth = BANDWIDTH_6_MHZ;
 918         priv->i2c = i2c;
 919         priv->devptr = devptr;
 920
 921         /* Check if firmware has been loaded. It is possible that another
 922            instance of the driver has loaded the firmware.
 923          */
 924         if (xc5000_readreg(priv, XREG_PRODUCT_ID, &id) != 0) {
 925                 kfree(priv);
 926                 return NULL;
 927         }
 928
 929         switch(id) {
 930         case XC_PRODUCT_ID_FW_LOADED:
 931                 printk(KERN_INFO
 932                         "xc5000: Successfully identified at address 0x%02x\n",
 933                         cfg->i2c_address);
 934                 printk(KERN_INFO
 935                         "xc5000: Firmware has been loaded previously\n");
 936                 priv->fwloaded = 1;
 937                 break;
 938         case XC_PRODUCT_ID_FW_NOT_LOADED:
 939                 printk(KERN_INFO
 940                         "xc5000: Successfully identified at address 0x%02x\n",
 941                         cfg->i2c_address);
 942                 printk(KERN_INFO
 943                         "xc5000: Firmware has not been loaded previously\n");
 944                 priv->fwloaded = 0;
 945                 break;
 946         default:
 947                 printk(KERN_ERR
 948                         "xc5000: Device not found at addr 0x%02x (0x%x)\n",
 949                         cfg->i2c_address, id);
 950                 kfree(priv);
 951                 return NULL;
 952         }
 953
 954         memcpy(&fe->ops.tuner_ops, &xc5000_tuner_ops,
 955                 sizeof(struct dvb_tuner_ops));
 956
 957         fe->tuner_priv = priv;
 958
 959         return fe;
 960 }
 961 EXPORT_SYMBOL(xc5000_attach);
 962
 963 MODULE_AUTHOR("Steven Toth");
 964 MODULE_DESCRIPTION("Xceive xc5000 silicon tuner driver");
 965 MODULE_LICENSE("GPL");