drivers/media/dvb-frontends/cxd2820r_t2.c

   1 /*
   2  * Sony CXD2820R demodulator driver
   3  *
   4  * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License along
  17  *    with this program; if not, write to the Free Software Foundation, Inc.,
  18  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21
  22 #include "cxd2820r_priv.h"
  23
  24 int cxd2820r_set_frontend_t2(struct dvb_frontend *fe)
  25 {
  26         struct cxd2820r_priv *priv = fe->demodulator_priv;
  27         struct i2c_client *client = priv->client[0];
  28         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
  29         int ret, bw_i;
  30         unsigned int utmp;
  31         u32 if_frequency;
  32         u8 buf[3], bw_param;
  33         u8 bw_params1[][5] = {
  34                 { 0x1c, 0xb3, 0x33, 0x33, 0x33 }, /* 5 MHz */
  35                 { 0x17, 0xea, 0xaa, 0xaa, 0xaa }, /* 6 MHz */
  36                 { 0x14, 0x80, 0x00, 0x00, 0x00 }, /* 7 MHz */
  37                 { 0x11, 0xf0, 0x00, 0x00, 0x00 }, /* 8 MHz */
  38         };
  39         struct reg_val_mask tab[] = {
  40                 { 0x00080, 0x02, 0xff },
  41                 { 0x00081, 0x20, 0xff },
  42                 { 0x00085, 0x07, 0xff },
  43                 { 0x00088, 0x01, 0xff },
  44                 { 0x02069, 0x01, 0xff },
  45
  46                 { 0x0207f, 0x2a, 0xff },
  47                 { 0x02082, 0x0a, 0xff },
  48                 { 0x02083, 0x0a, 0xff },
  49                 { 0x020cb, priv->if_agc_polarity << 6, 0x40 },
  50                 { 0x02070, priv->ts_mode, 0xff },
  51                 { 0x02071, !priv->ts_clk_inv << 6, 0x40 },
  52                 { 0x020b5, priv->spec_inv << 4, 0x10 },
  53                 { 0x02567, 0x07, 0x0f },
  54                 { 0x02569, 0x03, 0x03 },
  55                 { 0x02595, 0x1a, 0xff },
  56                 { 0x02596, 0x50, 0xff },
  57                 { 0x02a8c, 0x00, 0xff },
  58                 { 0x02a8d, 0x34, 0xff },
  59                 { 0x02a45, 0x06, 0x07 },
  60                 { 0x03f10, 0x0d, 0xff },
  61                 { 0x03f11, 0x02, 0xff },
  62                 { 0x03f12, 0x01, 0xff },
  63                 { 0x03f23, 0x2c, 0xff },
  64                 { 0x03f51, 0x13, 0xff },
  65                 { 0x03f52, 0x01, 0xff },
  66                 { 0x03f53, 0x00, 0xff },
  67                 { 0x027e6, 0x14, 0xff },
  68                 { 0x02786, 0x02, 0x07 },
  69                 { 0x02787, 0x40, 0xe0 },
  70                 { 0x027ef, 0x10, 0x18 },
  71         };
  72
  73         dev_dbg(&client->dev,
  74                 "delivery_system=%d modulation=%d frequency=%u bandwidth_hz=%u inversion=%d stream_id=%u\n",
  75                 c->delivery_system, c->modulation, c->frequency,
  76                 c->bandwidth_hz, c->inversion, c->stream_id);
  77
  78         switch (c->bandwidth_hz) {
  79         case 5000000:
  80                 bw_i = 0;
  81                 bw_param = 3;
  82                 break;
  83         case 6000000:
  84                 bw_i = 1;
  85                 bw_param = 2;
  86                 break;
  87         case 7000000:
  88                 bw_i = 2;
  89                 bw_param = 1;
  90                 break;
  91         case 8000000:
  92                 bw_i = 3;
  93                 bw_param = 0;
  94                 break;
  95         default:
  96                 return -EINVAL;
  97         }
  98
  99         /* program tuner */
 100         if (fe->ops.tuner_ops.set_params)
 101                 fe->ops.tuner_ops.set_params(fe);
 102
 103         if (priv->delivery_system != SYS_DVBT2) {
 104                 ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));
 105                 if (ret)
 106                         goto error;
 107         }
 108
 109         priv->delivery_system = SYS_DVBT2;
 110
 111         /* program IF frequency */
 112         if (fe->ops.tuner_ops.get_if_frequency) {
 113                 ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
 114                 if (ret)
 115                         goto error;
 116                 dev_dbg(&client->dev, "if_frequency=%u\n", if_frequency);
 117         } else {
 118                 ret = -EINVAL;
 119                 goto error;
 120         }
 121
 122         utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, CXD2820R_CLK);
 123         buf[0] = (utmp >> 16) & 0xff;
 124         buf[1] = (utmp >>  8) & 0xff;
 125         buf[2] = (utmp >>  0) & 0xff;
 126         ret = regmap_bulk_write(priv->regmap[0], 0x20b6, buf, 3);
 127         if (ret)
 128                 goto error;
 129
 130         /* PLP filtering */
 131         if (c->stream_id > 255) {
 132                 dev_dbg(&client->dev, "disable PLP filtering\n");
 133                 ret = regmap_write(priv->regmap[0], 0x23ad, 0x00);
 134                 if (ret)
 135                         goto error;
 136         } else {
 137                 dev_dbg(&client->dev, "enable PLP filtering\n");
 138                 ret = regmap_write(priv->regmap[0], 0x23af, c->stream_id & 0xff);
 139                 if (ret)
 140                         goto error;
 141                 ret = regmap_write(priv->regmap[0], 0x23ad, 0x01);
 142                 if (ret)
 143                         goto error;
 144         }
 145
 146         ret = regmap_bulk_write(priv->regmap[0], 0x209f, bw_params1[bw_i], 5);
 147         if (ret)
 148                 goto error;
 149
 150         ret = regmap_update_bits(priv->regmap[0], 0x20d7, 0xc0, bw_param << 6);
 151         if (ret)
 152                 goto error;
 153
 154         ret = regmap_write(priv->regmap[0], 0x00ff, 0x08);
 155         if (ret)
 156                 goto error;
 157
 158         ret = regmap_write(priv->regmap[0], 0x00fe, 0x01);
 159         if (ret)
 160                 goto error;
 161
 162         return ret;
 163 error:
 164         dev_dbg(&client->dev, "failed=%d\n", ret);
 165         return ret;
 166
 167 }
 168
 169 int cxd2820r_get_frontend_t2(struct dvb_frontend *fe,
 170                              struct dtv_frontend_properties *c)
 171 {
 172         struct cxd2820r_priv *priv = fe->demodulator_priv;
 173         struct i2c_client *client = priv->client[0];
 174         int ret;
 175         unsigned int utmp;
 176         u8 buf[2];
 177
 178         dev_dbg(&client->dev, "\n");
 179
 180         ret = regmap_bulk_read(priv->regmap[0], 0x205c, buf, 2);
 181         if (ret)
 182                 goto error;
 183
 184         switch ((buf[0] >> 0) & 0x07) {
 185         case 0:
 186                 c->transmission_mode = TRANSMISSION_MODE_2K;
 187                 break;
 188         case 1:
 189                 c->transmission_mode = TRANSMISSION_MODE_8K;
 190                 break;
 191         case 2:
 192                 c->transmission_mode = TRANSMISSION_MODE_4K;
 193                 break;
 194         case 3:
 195                 c->transmission_mode = TRANSMISSION_MODE_1K;
 196                 break;
 197         case 4:
 198                 c->transmission_mode = TRANSMISSION_MODE_16K;
 199                 break;
 200         case 5:
 201                 c->transmission_mode = TRANSMISSION_MODE_32K;
 202                 break;
 203         }
 204
 205         switch ((buf[1] >> 4) & 0x07) {
 206         case 0:
 207                 c->guard_interval = GUARD_INTERVAL_1_32;
 208                 break;
 209         case 1:
 210                 c->guard_interval = GUARD_INTERVAL_1_16;
 211                 break;
 212         case 2:
 213                 c->guard_interval = GUARD_INTERVAL_1_8;
 214                 break;
 215         case 3:
 216                 c->guard_interval = GUARD_INTERVAL_1_4;
 217                 break;
 218         case 4:
 219                 c->guard_interval = GUARD_INTERVAL_1_128;
 220                 break;
 221         case 5:
 222                 c->guard_interval = GUARD_INTERVAL_19_128;
 223                 break;
 224         case 6:
 225                 c->guard_interval = GUARD_INTERVAL_19_256;
 226                 break;
 227         }
 228
 229         ret = regmap_bulk_read(priv->regmap[0], 0x225b, buf, 2);
 230         if (ret)
 231                 goto error;
 232
 233         switch ((buf[0] >> 0) & 0x07) {
 234         case 0:
 235                 c->fec_inner = FEC_1_2;
 236                 break;
 237         case 1:
 238                 c->fec_inner = FEC_3_5;
 239                 break;
 240         case 2:
 241                 c->fec_inner = FEC_2_3;
 242                 break;
 243         case 3:
 244                 c->fec_inner = FEC_3_4;
 245                 break;
 246         case 4:
 247                 c->fec_inner = FEC_4_5;
 248                 break;
 249         case 5:
 250                 c->fec_inner = FEC_5_6;
 251                 break;
 252         }
 253
 254         switch ((buf[1] >> 0) & 0x07) {
 255         case 0:
 256                 c->modulation = QPSK;
 257                 break;
 258         case 1:
 259                 c->modulation = QAM_16;
 260                 break;
 261         case 2:
 262                 c->modulation = QAM_64;
 263                 break;
 264         case 3:
 265                 c->modulation = QAM_256;
 266                 break;
 267         }
 268
 269         ret = regmap_read(priv->regmap[0], 0x20b5, &utmp);
 270         if (ret)
 271                 goto error;
 272
 273         switch ((utmp >> 4) & 0x01) {
 274         case 0:
 275                 c->inversion = INVERSION_OFF;
 276                 break;
 277         case 1:
 278                 c->inversion = INVERSION_ON;
 279                 break;
 280         }
 281
 282         return ret;
 283 error:
 284         dev_dbg(&client->dev, "failed=%d\n", ret);
 285         return ret;
 286 }
 287
 288 int cxd2820r_read_status_t2(struct dvb_frontend *fe, enum fe_status *status)
 289 {
 290         struct cxd2820r_priv *priv = fe->demodulator_priv;
 291         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 292         struct i2c_client *client = priv->client[0];
 293         int ret;
 294         unsigned int utmp, utmp1, utmp2;
 295         u8 buf[4];
 296
 297         /* Lock detection */
 298         ret = regmap_bulk_read(priv->regmap[0], 0x2010, &buf[0], 1);
 299         if (ret)
 300                 goto error;
 301
 302         utmp1 = (buf[0] >> 0) & 0x07;
 303         utmp2 = (buf[0] >> 5) & 0x01;
 304
 305         if (utmp1 == 6 && utmp2 == 1) {
 306                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
 307                           FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 308         } else if (utmp1 == 6 || utmp2 == 1) {
 309                 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
 310                           FE_HAS_VITERBI | FE_HAS_SYNC;
 311         } else {
 312                 *status = 0;
 313         }
 314
 315         dev_dbg(&client->dev, "status=%02x raw=%*ph sync=%u ts=%u\n",
 316                 *status, 1, buf, utmp1, utmp2);
 317
 318         /* Signal strength */
 319         if (*status & FE_HAS_SIGNAL) {
 320                 unsigned int strength;
 321
 322                 ret = regmap_bulk_read(priv->regmap[0], 0x2026, buf, 2);
 323                 if (ret)
 324                         goto error;
 325
 326                 utmp = buf[0] << 8 | buf[1] << 0;
 327                 utmp = ~utmp & 0x0fff;
 328                 /* Scale value to 0x0000-0xffff */
 329                 strength = utmp << 4 | utmp >> 8;
 330
 331                 c->strength.len = 1;
 332                 c->strength.stat[0].scale = FE_SCALE_RELATIVE;
 333                 c->strength.stat[0].uvalue = strength;
 334         } else {
 335                 c->strength.len = 1;
 336                 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 337         }
 338
 339         /* CNR */
 340         if (*status & FE_HAS_VITERBI) {
 341                 unsigned int cnr;
 342
 343                 ret = regmap_bulk_read(priv->regmap[0], 0x2028, buf, 2);
 344                 if (ret)
 345                         goto error;
 346
 347                 utmp = buf[0] << 8 | buf[1] << 0;
 348                 utmp = utmp & 0x0fff;
 349                 #define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */
 350                 if (utmp)
 351                         cnr = div_u64((u64)(intlog10(utmp)
 352                                       - CXD2820R_LOG10_8_24) * 10000,
 353                                       (1 << 24));
 354                 else
 355                         cnr = 0;
 356
 357                 c->cnr.len = 1;
 358                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 359                 c->cnr.stat[0].svalue = cnr;
 360         } else {
 361                 c->cnr.len = 1;
 362                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 363         }
 364
 365         /* BER */
 366         if (*status & FE_HAS_SYNC) {
 367                 unsigned int post_bit_error;
 368
 369                 ret = regmap_bulk_read(priv->regmap[0], 0x2039, buf, 4);
 370                 if (ret)
 371                         goto error;
 372
 373                 if ((buf[0] >> 4) & 0x01) {
 374                         post_bit_error = buf[0] << 24 | buf[1] << 16 |
 375                                          buf[2] << 8 | buf[3] << 0;
 376                         post_bit_error &= 0x0fffffff;
 377                 } else {
 378                         post_bit_error = 0;
 379                 }
 380
 381                 priv->post_bit_error += post_bit_error;
 382
 383                 c->post_bit_error.len = 1;
 384                 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 385                 c->post_bit_error.stat[0].uvalue = priv->post_bit_error;
 386         } else {
 387                 c->post_bit_error.len = 1;
 388                 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 389         }
 390
 391         return ret;
 392 error:
 393         dev_dbg(&client->dev, "failed=%d\n", ret);
 394         return ret;
 395 }
 396
 397 int cxd2820r_sleep_t2(struct dvb_frontend *fe)
 398 {
 399         struct cxd2820r_priv *priv = fe->demodulator_priv;
 400         struct i2c_client *client = priv->client[0];
 401         int ret;
 402         struct reg_val_mask tab[] = {
 403                 { 0x000ff, 0x1f, 0xff },
 404                 { 0x00085, 0x00, 0xff },
 405                 { 0x00088, 0x01, 0xff },
 406                 { 0x02069, 0x00, 0xff },
 407                 { 0x00081, 0x00, 0xff },
 408                 { 0x00080, 0x00, 0xff },
 409         };
 410
 411         dev_dbg(&client->dev, "\n");
 412
 413         ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));
 414         if (ret)
 415                 goto error;
 416
 417         priv->delivery_system = SYS_UNDEFINED;
 418
 419         return ret;
 420 error:
 421         dev_dbg(&client->dev, "failed=%d\n", ret);
 422         return ret;
 423 }
 424
 425 int cxd2820r_get_tune_settings_t2(struct dvb_frontend *fe,
 426         struct dvb_frontend_tune_settings *s)
 427 {
 428         s->min_delay_ms = 1500;
 429         s->step_size = fe->ops.info.frequency_stepsize * 2;
 430         s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
 431
 432         return 0;
 433 }