Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 | // SPDX-License-Identifier: GPL-2.0-or-later /* * mxl111sf-tuner.c - driver for the MaxLinear MXL111SF CMOS tuner * * Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org> */ #include "mxl111sf-tuner.h" #include "mxl111sf-phy.h" #include "mxl111sf-reg.h" /* debug */ static int mxl111sf_tuner_debug; module_param_named(debug, mxl111sf_tuner_debug, int, 0644); MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))."); #define mxl_dbg(fmt, arg...) \ if (mxl111sf_tuner_debug) \ mxl_printk(KERN_DEBUG, fmt, ##arg) /* ------------------------------------------------------------------------ */ struct mxl111sf_tuner_state { struct mxl111sf_state *mxl_state; const struct mxl111sf_tuner_config *cfg; enum mxl_if_freq if_freq; u32 frequency; u32 bandwidth; }; static int mxl111sf_tuner_read_reg(struct mxl111sf_tuner_state *state, u8 addr, u8 *data) { return (state->cfg->read_reg) ? state->cfg->read_reg(state->mxl_state, addr, data) : -EINVAL; } static int mxl111sf_tuner_write_reg(struct mxl111sf_tuner_state *state, u8 addr, u8 data) { return (state->cfg->write_reg) ? state->cfg->write_reg(state->mxl_state, addr, data) : -EINVAL; } static int mxl111sf_tuner_program_regs(struct mxl111sf_tuner_state *state, struct mxl111sf_reg_ctrl_info *ctrl_reg_info) { return (state->cfg->program_regs) ? state->cfg->program_regs(state->mxl_state, ctrl_reg_info) : -EINVAL; } static int mxl1x1sf_tuner_top_master_ctrl(struct mxl111sf_tuner_state *state, int onoff) { return (state->cfg->top_master_ctrl) ? state->cfg->top_master_ctrl(state->mxl_state, onoff) : -EINVAL; } /* ------------------------------------------------------------------------ */ static struct mxl111sf_reg_ctrl_info mxl_phy_tune_rf[] = { {0x1d, 0x7f, 0x00}, /* channel bandwidth section 1/2/3, DIG_MODEINDEX, _A, _CSF, */ {0x1e, 0xff, 0x00}, /* channel frequency (lo and fractional) */ {0x1f, 0xff, 0x00}, /* channel frequency (hi for integer portion) */ {0, 0, 0} }; /* ------------------------------------------------------------------------ */ static struct mxl111sf_reg_ctrl_info *mxl111sf_calc_phy_tune_regs(u32 freq, u8 bw) { u8 filt_bw; /* set channel bandwidth */ switch (bw) { case 0: /* ATSC */ filt_bw = 25; break; case 1: /* QAM */ filt_bw = 69; break; case 6: filt_bw = 21; break; case 7: filt_bw = 42; break; case 8: filt_bw = 63; break; default: pr_err("%s: invalid bandwidth setting!", __func__); return NULL; } /* calculate RF channel */ freq /= 1000000; freq *= 64; #if 0 /* do round */ freq += 0.5; #endif /* set bandwidth */ mxl_phy_tune_rf[0].data = filt_bw; /* set RF */ mxl_phy_tune_rf[1].data = (freq & 0xff); mxl_phy_tune_rf[2].data = (freq >> 8) & 0xff; /* start tune */ return mxl_phy_tune_rf; } static int mxl1x1sf_tuner_set_if_output_freq(struct mxl111sf_tuner_state *state) { int ret; u8 ctrl; #if 0 u16 iffcw; u32 if_freq; #endif mxl_dbg("(IF polarity = %d, IF freq = 0x%02x)", state->cfg->invert_spectrum, state->cfg->if_freq); /* set IF polarity */ ctrl = state->cfg->invert_spectrum; ctrl |= state->cfg->if_freq; ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_SEL_REG, ctrl); if (mxl_fail(ret)) goto fail; #if 0 if_freq /= 1000000; /* do round */ if_freq += 0.5; if (MXL_IF_LO == state->cfg->if_freq) { ctrl = 0x08; iffcw = (u16)(if_freq / (108 * 4096)); } else if (MXL_IF_HI == state->cfg->if_freq) { ctrl = 0x08; iffcw = (u16)(if_freq / (216 * 4096)); } else { ctrl = 0; iffcw = 0; } ctrl |= (iffcw >> 8); #endif ret = mxl111sf_tuner_read_reg(state, V6_TUNER_IF_FCW_BYP_REG, &ctrl); if (mxl_fail(ret)) goto fail; ctrl &= 0xf0; ctrl |= 0x90; ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_FCW_BYP_REG, ctrl); if (mxl_fail(ret)) goto fail; #if 0 ctrl = iffcw & 0x00ff; #endif ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_FCW_REG, ctrl); if (mxl_fail(ret)) goto fail; state->if_freq = state->cfg->if_freq; fail: return ret; } static int mxl1x1sf_tune_rf(struct dvb_frontend *fe, u32 freq, u8 bw) { struct mxl111sf_tuner_state *state = fe->tuner_priv; static struct mxl111sf_reg_ctrl_info *reg_ctrl_array; int ret; u8 mxl_mode; mxl_dbg("(freq = %d, bw = 0x%x)", freq, bw); /* stop tune */ ret = mxl111sf_tuner_write_reg(state, START_TUNE_REG, 0); if (mxl_fail(ret)) goto fail; /* check device mode */ ret = mxl111sf_tuner_read_reg(state, MXL_MODE_REG, &mxl_mode); if (mxl_fail(ret)) goto fail; /* Fill out registers for channel tune */ reg_ctrl_array = mxl111sf_calc_phy_tune_regs(freq, bw); if (!reg_ctrl_array) return -EINVAL; ret = mxl111sf_tuner_program_regs(state, reg_ctrl_array); if (mxl_fail(ret)) goto fail; if ((mxl_mode & MXL_DEV_MODE_MASK) == MXL_TUNER_MODE) { /* IF tuner mode only */ mxl1x1sf_tuner_top_master_ctrl(state, 0); mxl1x1sf_tuner_top_master_ctrl(state, 1); mxl1x1sf_tuner_set_if_output_freq(state); } ret = mxl111sf_tuner_write_reg(state, START_TUNE_REG, 1); if (mxl_fail(ret)) goto fail; if (state->cfg->ant_hunt) state->cfg->ant_hunt(fe); fail: return ret; } static int mxl1x1sf_tuner_get_lock_status(struct mxl111sf_tuner_state *state, int *rf_synth_lock, int *ref_synth_lock) { int ret; u8 data; *rf_synth_lock = 0; *ref_synth_lock = 0; ret = mxl111sf_tuner_read_reg(state, V6_RF_LOCK_STATUS_REG, &data); if (mxl_fail(ret)) goto fail; *ref_synth_lock = ((data & 0x03) == 0x03) ? 1 : 0; *rf_synth_lock = ((data & 0x0c) == 0x0c) ? 1 : 0; fail: return ret; } #if 0 static int mxl1x1sf_tuner_loop_thru_ctrl(struct mxl111sf_tuner_state *state, int onoff) { return mxl111sf_tuner_write_reg(state, V6_TUNER_LOOP_THRU_CTRL_REG, onoff ? 1 : 0); } #endif /* ------------------------------------------------------------------------ */ static int mxl111sf_tuner_set_params(struct dvb_frontend *fe) { struct dtv_frontend_properties *c = &fe->dtv_property_cache; u32 delsys = c->delivery_system; struct mxl111sf_tuner_state *state = fe->tuner_priv; int ret; u8 bw; mxl_dbg("()"); switch (delsys) { case SYS_ATSC: case SYS_ATSCMH: bw = 0; /* ATSC */ break; case SYS_DVBC_ANNEX_B: bw = 1; /* US CABLE */ break; case SYS_DVBT: switch (c->bandwidth_hz) { case 6000000: bw = 6; break; case 7000000: bw = 7; break; case 8000000: bw = 8; break; default: pr_err("%s: bandwidth not set!", __func__); return -EINVAL; } break; default: pr_err("%s: modulation type not supported!", __func__); return -EINVAL; } ret = mxl1x1sf_tune_rf(fe, c->frequency, bw); if (mxl_fail(ret)) goto fail; state->frequency = c->frequency; state->bandwidth = c->bandwidth_hz; fail: return ret; } /* ------------------------------------------------------------------------ */ #if 0 static int mxl111sf_tuner_init(struct dvb_frontend *fe) { struct mxl111sf_tuner_state *state = fe->tuner_priv; int ret; /* wake from standby handled by usb driver */ return ret; } static int mxl111sf_tuner_sleep(struct dvb_frontend *fe) { struct mxl111sf_tuner_state *state = fe->tuner_priv; int ret; /* enter standby mode handled by usb driver */ return ret; } #endif /* ------------------------------------------------------------------------ */ static int mxl111sf_tuner_get_status(struct dvb_frontend *fe, u32 *status) { struct mxl111sf_tuner_state *state = fe->tuner_priv; int rf_locked, ref_locked, ret; *status = 0; ret = mxl1x1sf_tuner_get_lock_status(state, &rf_locked, &ref_locked); if (mxl_fail(ret)) goto fail; mxl_info("%s%s", rf_locked ? "rf locked " : "", ref_locked ? "ref locked" : ""); if ((rf_locked) || (ref_locked)) *status |= TUNER_STATUS_LOCKED; fail: return ret; } static int mxl111sf_get_rf_strength(struct dvb_frontend *fe, u16 *strength) { struct mxl111sf_tuner_state *state = fe->tuner_priv; u8 val1, val2; int ret; *strength = 0; ret = mxl111sf_tuner_write_reg(state, 0x00, 0x02); if (mxl_fail(ret)) goto fail; ret = mxl111sf_tuner_read_reg(state, V6_DIG_RF_PWR_LSB_REG, &val1); if (mxl_fail(ret)) goto fail; ret = mxl111sf_tuner_read_reg(state, V6_DIG_RF_PWR_MSB_REG, &val2); if (mxl_fail(ret)) goto fail; *strength = val1 | ((val2 & 0x07) << 8); fail: ret = mxl111sf_tuner_write_reg(state, 0x00, 0x00); mxl_fail(ret); return ret; } /* ------------------------------------------------------------------------ */ static int mxl111sf_tuner_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct mxl111sf_tuner_state *state = fe->tuner_priv; *frequency = state->frequency; return 0; } static int mxl111sf_tuner_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) { struct mxl111sf_tuner_state *state = fe->tuner_priv; *bandwidth = state->bandwidth; return 0; } static int mxl111sf_tuner_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) { struct mxl111sf_tuner_state *state = fe->tuner_priv; *frequency = 0; switch (state->if_freq) { case MXL_IF_4_0: /* 4.0 MHz */ *frequency = 4000000; break; case MXL_IF_4_5: /* 4.5 MHz */ *frequency = 4500000; break; case MXL_IF_4_57: /* 4.57 MHz */ *frequency = 4570000; break; case MXL_IF_5_0: /* 5.0 MHz */ *frequency = 5000000; break; case MXL_IF_5_38: /* 5.38 MHz */ *frequency = 5380000; break; case MXL_IF_6_0: /* 6.0 MHz */ *frequency = 6000000; break; case MXL_IF_6_28: /* 6.28 MHz */ *frequency = 6280000; break; case MXL_IF_7_2: /* 7.2 MHz */ *frequency = 7200000; break; case MXL_IF_35_25: /* 35.25 MHz */ *frequency = 35250000; break; case MXL_IF_36: /* 36 MHz */ *frequency = 36000000; break; case MXL_IF_36_15: /* 36.15 MHz */ *frequency = 36150000; break; case MXL_IF_44: /* 44 MHz */ *frequency = 44000000; break; } return 0; } static void mxl111sf_tuner_release(struct dvb_frontend *fe) { struct mxl111sf_tuner_state *state = fe->tuner_priv; mxl_dbg("()"); kfree(state); fe->tuner_priv = NULL; } /* ------------------------------------------------------------------------- */ static const struct dvb_tuner_ops mxl111sf_tuner_tuner_ops = { .info = { .name = "MaxLinear MxL111SF", #if 0 .frequency_min_hz = , .frequency_max_hz = , .frequency_step_hz = , #endif }, #if 0 .init = mxl111sf_tuner_init, .sleep = mxl111sf_tuner_sleep, #endif .set_params = mxl111sf_tuner_set_params, .get_status = mxl111sf_tuner_get_status, .get_rf_strength = mxl111sf_get_rf_strength, .get_frequency = mxl111sf_tuner_get_frequency, .get_bandwidth = mxl111sf_tuner_get_bandwidth, .get_if_frequency = mxl111sf_tuner_get_if_frequency, .release = mxl111sf_tuner_release, }; struct dvb_frontend *mxl111sf_tuner_attach(struct dvb_frontend *fe, struct mxl111sf_state *mxl_state, const struct mxl111sf_tuner_config *cfg) { struct mxl111sf_tuner_state *state = NULL; mxl_dbg("()"); state = kzalloc(sizeof(struct mxl111sf_tuner_state), GFP_KERNEL); if (state == NULL) return NULL; state->mxl_state = mxl_state; state->cfg = cfg; memcpy(&fe->ops.tuner_ops, &mxl111sf_tuner_tuner_ops, sizeof(struct dvb_tuner_ops)); fe->tuner_priv = state; return fe; } EXPORT_SYMBOL_GPL(mxl111sf_tuner_attach); MODULE_DESCRIPTION("MaxLinear MxL111SF CMOS tuner driver"); MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); MODULE_LICENSE("GPL"); MODULE_VERSION("0.1"); |