git.oblomov.eu Git - linux-2.6/blob - drivers/media/dvb/frontends/xc5000.c

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