| 1 | /* $NetBSD: nxt2k.c,v 1.4 2015/03/07 14:16:51 jmcneill Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2008, 2011 Jonathan A. Kollasch |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
| 20 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 21 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 25 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 26 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: nxt2k.c,v 1.4 2015/03/07 14:16:51 jmcneill Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/kernel.h> |
| 34 | #include <sys/systm.h> |
| 35 | #include <sys/device.h> |
| 36 | #include <sys/kmem.h> |
| 37 | #include <sys/condvar.h> |
| 38 | #include <sys/mutex.h> |
| 39 | #include <sys/module.h> |
| 40 | |
| 41 | #include <dev/firmload.h> |
| 42 | |
| 43 | #include <dev/i2c/nxt2kvar.h> |
| 44 | |
| 45 | struct nxt2k { |
| 46 | device_t parent; |
| 47 | i2c_tag_t tag; |
| 48 | i2c_addr_t addr; |
| 49 | kcondvar_t cv; |
| 50 | kmutex_t mtx; |
| 51 | bool loaded; /* firmware is loaded? */ |
| 52 | }; |
| 53 | |
| 54 | static int nxt2k_init(struct nxt2k *); |
| 55 | |
| 56 | static int nxt2k_writedata(struct nxt2k *, uint8_t, uint8_t *, size_t); |
| 57 | static int nxt2k_readdata(struct nxt2k *, uint8_t, uint8_t *, size_t); |
| 58 | static int nxt2k_writereg(struct nxt2k *, uint8_t, uint8_t *, size_t); |
| 59 | static int nxt2k_readreg(struct nxt2k*, uint8_t, uint8_t *, size_t); |
| 60 | |
| 61 | static int nxt2k4_init(struct nxt2k *); |
| 62 | static bool nxt2k4_load_firmware(struct nxt2k *); |
| 63 | static void nxt2k4_mc_init(struct nxt2k *); |
| 64 | static void nxt2k_mc_start(struct nxt2k *); |
| 65 | static void nxt2k_mc_stop(struct nxt2k *); |
| 66 | static void nxt2k_agc_reset(struct nxt2k *); |
| 67 | static uint16_t nxt2k_crc_ccit(uint16_t, uint8_t); |
| 68 | |
| 69 | static int |
| 70 | nxt2k_writedata(struct nxt2k *nxt, uint8_t reg, uint8_t *data, size_t len) |
| 71 | { |
| 72 | uint8_t buffer[384]; |
| 73 | int error; |
| 74 | |
| 75 | KASSERT((len + 1) <= 384); |
| 76 | |
| 77 | if (iic_acquire_bus(nxt->tag, I2C_F_POLL) != 0) |
| 78 | return false; |
| 79 | |
| 80 | buffer[0] = reg; |
| 81 | memcpy(&buffer[1], data, len); |
| 82 | |
| 83 | error = iic_exec(nxt->tag, I2C_OP_WRITE_WITH_STOP, nxt->addr, |
| 84 | buffer, len + 1, NULL, 0, I2C_F_POLL); |
| 85 | |
| 86 | iic_release_bus(nxt->tag, I2C_F_POLL); |
| 87 | |
| 88 | return error; |
| 89 | } |
| 90 | |
| 91 | static int |
| 92 | nxt2k_readdata(struct nxt2k *nxt, uint8_t reg, uint8_t *data, size_t len) |
| 93 | { |
| 94 | int error; |
| 95 | |
| 96 | if (iic_acquire_bus(nxt->tag, I2C_F_POLL) != 0) |
| 97 | return false; |
| 98 | |
| 99 | error = iic_exec(nxt->tag, I2C_OP_READ_WITH_STOP, nxt->addr, |
| 100 | ®, 1, data, len, I2C_F_POLL); |
| 101 | |
| 102 | iic_release_bus(nxt->tag, I2C_F_POLL); |
| 103 | |
| 104 | return error; |
| 105 | } |
| 106 | |
| 107 | static int |
| 108 | nxt2k_writereg(struct nxt2k *nxt, uint8_t reg, uint8_t *data, size_t len) |
| 109 | { |
| 110 | uint8_t attr, len2, buf; |
| 111 | |
| 112 | nxt2k_writedata(nxt, 0x35, ®, 1); |
| 113 | |
| 114 | nxt2k_writedata(nxt, 0x36, data, len); |
| 115 | |
| 116 | attr = 0x02; |
| 117 | if (reg & 0x80) { |
| 118 | attr = attr << 1; |
| 119 | if (reg & 0x04) |
| 120 | attr = attr >> 1; |
| 121 | } |
| 122 | len2 = ((attr << 4) | 0x10) | len; |
| 123 | buf = 0x80; |
| 124 | |
| 125 | nxt2k_writedata(nxt, 0x34, &len2, 1); |
| 126 | |
| 127 | nxt2k_writedata(nxt, 0x21, &buf, 1); |
| 128 | |
| 129 | nxt2k_readdata(nxt, 0x21, &buf, 1); |
| 130 | |
| 131 | if (buf == 0) |
| 132 | return 0; |
| 133 | |
| 134 | return -1; |
| 135 | } |
| 136 | |
| 137 | static int |
| 138 | nxt2k_readreg(struct nxt2k *nxt, uint8_t reg, uint8_t *data, size_t len) |
| 139 | { |
| 140 | uint8_t buf, len2, attr; |
| 141 | unsigned int i; |
| 142 | |
| 143 | nxt2k_writedata(nxt, 0x35, ®, 1); |
| 144 | |
| 145 | attr = 0x02; |
| 146 | if (reg & 0x80) { |
| 147 | attr = attr << 1; |
| 148 | if (reg & 0x04) |
| 149 | attr = attr >> 1; |
| 150 | } |
| 151 | |
| 152 | len2 = (attr << 4) | len; |
| 153 | nxt2k_writedata(nxt, 0x34, &len2, 1); |
| 154 | |
| 155 | buf = 0x80; |
| 156 | nxt2k_writedata(nxt, 0x21, &buf, 1); |
| 157 | |
| 158 | for(i = 0; i < len; i++) { |
| 159 | nxt2k_readdata(nxt, 0x36+i, &data[i], 1); |
| 160 | } |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | static void |
| 166 | nxt2k_agc_reset(struct nxt2k *nxt) |
| 167 | { |
| 168 | uint8_t byte; |
| 169 | nxt2k_readreg(nxt, 0x08, &byte, 1); |
| 170 | byte = 0x08; |
| 171 | nxt2k_writereg(nxt, 0x08, &byte, 1); |
| 172 | byte = 0x00; |
| 173 | nxt2k_writereg(nxt, 0x08, &byte, 1); |
| 174 | return; |
| 175 | } |
| 176 | |
| 177 | static void |
| 178 | nxt2k_mc_stop(struct nxt2k *nxt) |
| 179 | { |
| 180 | int counter; |
| 181 | uint8_t stopval, buf; |
| 182 | |
| 183 | /* 2k4 */ |
| 184 | stopval = 0x10; |
| 185 | |
| 186 | buf = 0x80; |
| 187 | nxt2k_writedata(nxt, 0x22, &buf, 1); |
| 188 | |
| 189 | for(counter = 0; counter < 20; counter++) { |
| 190 | nxt2k_readdata(nxt, 0x31, &buf, 1); |
| 191 | if (buf & stopval) |
| 192 | return; |
| 193 | mutex_enter(&nxt->mtx); |
| 194 | cv_timedwait(&nxt->cv, &nxt->mtx, mstohz(10)); |
| 195 | mutex_exit(&nxt->mtx); |
| 196 | } |
| 197 | |
| 198 | printf("%s timeout\n" , __func__); |
| 199 | |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | static void |
| 204 | nxt2k_mc_start(struct nxt2k *nxt) |
| 205 | { |
| 206 | uint8_t buf; |
| 207 | |
| 208 | buf = 0x00; |
| 209 | nxt2k_writedata(nxt, 0x22, &buf, 1); |
| 210 | } |
| 211 | |
| 212 | static void |
| 213 | nxt2k4_mc_init(struct nxt2k *nxt) |
| 214 | { |
| 215 | uint8_t byte; |
| 216 | uint8_t data[] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0xC0}; |
| 217 | int counter; |
| 218 | |
| 219 | byte = 0x00; |
| 220 | nxt2k_writedata(nxt, 0x2b, &byte, 1); |
| 221 | byte = 0x70; |
| 222 | nxt2k_writedata(nxt, 0x34, &byte, 1); |
| 223 | byte = 0x04; |
| 224 | nxt2k_writedata(nxt, 0x35, &byte, 1); |
| 225 | |
| 226 | nxt2k_writedata(nxt, 0x36, data, 9); |
| 227 | |
| 228 | byte = 0x80; |
| 229 | nxt2k_writedata(nxt, 0x21, &byte, 1); |
| 230 | |
| 231 | for(counter = 0; counter < 20; counter++) { |
| 232 | nxt2k_readdata(nxt, 0x21, &byte, 1); |
| 233 | if ( byte == 0 ) |
| 234 | return; |
| 235 | mutex_enter(&nxt->mtx); |
| 236 | cv_timedwait(&nxt->cv, &nxt->mtx, mstohz(25)); |
| 237 | mutex_exit(&nxt->mtx); |
| 238 | } |
| 239 | |
| 240 | printf("%s timeout\n" , __func__); |
| 241 | |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | /* CRC-CCIT */ |
| 246 | static uint16_t |
| 247 | nxt2k_crc_ccit(uint16_t crc, uint8_t byte) |
| 248 | { |
| 249 | int i; |
| 250 | uint16_t input; |
| 251 | |
| 252 | input = byte << 8; |
| 253 | |
| 254 | for(i = 0; i < 8; i++) { |
| 255 | if ((crc ^ input) & 0x8000) |
| 256 | crc = (crc << 1) ^ 0x1021; |
| 257 | else |
| 258 | crc = (crc << 1); |
| 259 | input = input << 1; |
| 260 | } |
| 261 | return crc; |
| 262 | } |
| 263 | |
| 264 | static bool |
| 265 | nxt2k4_load_firmware(struct nxt2k *nxt) |
| 266 | { |
| 267 | firmware_handle_t fh; |
| 268 | uint8_t *blob; |
| 269 | size_t fwsize; |
| 270 | size_t position; |
| 271 | int error; |
| 272 | uint16_t crc; |
| 273 | |
| 274 | error = firmware_open("nxt2k" , "dvb-fe-nxt2004.fw" , &fh); |
| 275 | if (error != 0) { |
| 276 | printf("nxt2k firmware_open fail %d\n" , error); |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | fwsize = firmware_get_size(fh); |
| 281 | printf("fwsize %zd\n" , fwsize); |
| 282 | blob = firmware_malloc(fwsize); |
| 283 | if ( blob == NULL ) { |
| 284 | printf("nxt2k firmware_malloc fail\n" ); |
| 285 | firmware_close(fh); |
| 286 | return -1; |
| 287 | } |
| 288 | |
| 289 | error = firmware_read(fh, 0, blob, fwsize); |
| 290 | if (error != 0) { |
| 291 | printf("nxt2k firmware_read fail %d\n" , error); |
| 292 | firmware_free(blob, fwsize); |
| 293 | firmware_close(fh); |
| 294 | return -1; |
| 295 | } |
| 296 | |
| 297 | /* calculate CRC */ |
| 298 | crc = 0; |
| 299 | for(position = 0; position < fwsize; position++) { |
| 300 | crc = nxt2k_crc_ccit(crc, blob[position]); |
| 301 | } |
| 302 | printf("nxt2k firmware crc is %02x\n" , crc); |
| 303 | |
| 304 | uint16_t rambase; |
| 305 | uint8_t buf[3]; |
| 306 | |
| 307 | rambase = 0x1000; |
| 308 | |
| 309 | /* hold the micro in reset while loading firmware */ |
| 310 | buf[0] = 0x80; |
| 311 | nxt2k_writedata(nxt, 0x2b, buf, 1); |
| 312 | |
| 313 | buf[0] = rambase >> 8; |
| 314 | buf[1] = rambase & 0xFF; |
| 315 | buf[2] = 0x81; |
| 316 | /* write starting address */ |
| 317 | nxt2k_writedata(nxt, 0x29, buf, 3); |
| 318 | |
| 319 | position = 0; |
| 320 | |
| 321 | size_t xfercnt; |
| 322 | |
| 323 | while ( position < fwsize ) { |
| 324 | xfercnt = fwsize - position > 255 ? 255 : fwsize - position; |
| 325 | nxt2k_writedata(nxt, 0x2c, &blob[position], xfercnt); |
| 326 | position += xfercnt; |
| 327 | } |
| 328 | |
| 329 | /* write crc */ |
| 330 | buf[0] = crc >> 8; |
| 331 | buf[1] = crc & 0xFF; |
| 332 | nxt2k_writedata(nxt, 0x2c, buf, 2); |
| 333 | |
| 334 | /* do a read to stop things */ |
| 335 | nxt2k_readdata(nxt, 0x2c, buf, 1); |
| 336 | |
| 337 | /* set transfer mode to complete */ |
| 338 | buf[0] = 0x80; |
| 339 | nxt2k_writedata(nxt, 0x2b, buf, 1); |
| 340 | |
| 341 | firmware_free(blob, fwsize); |
| 342 | firmware_close(fh); |
| 343 | |
| 344 | return 1; |
| 345 | } |
| 346 | |
| 347 | static int |
| 348 | nxt2k4_init(struct nxt2k *nxt) |
| 349 | { |
| 350 | int success; |
| 351 | uint8_t buf[3]; |
| 352 | |
| 353 | buf[0] = 0x00; |
| 354 | nxt2k_writedata(nxt, 0x1e, buf, 1); |
| 355 | |
| 356 | /* try to load firmware */ |
| 357 | nxt->loaded = nxt2k4_load_firmware(nxt); |
| 358 | if (nxt->loaded == false) |
| 359 | return ECANCELED; |
| 360 | |
| 361 | /* ensure transfer is complete */ |
| 362 | buf[0] = 0x01; |
| 363 | nxt2k_writedata(nxt, 0x19, buf, 1); |
| 364 | |
| 365 | nxt2k4_mc_init(nxt); |
| 366 | nxt2k_mc_stop(nxt); |
| 367 | nxt2k_mc_stop(nxt); |
| 368 | nxt2k4_mc_init(nxt); |
| 369 | nxt2k_mc_stop(nxt); |
| 370 | |
| 371 | buf[0] = 0xff; |
| 372 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 373 | buf[0] = 0x00; |
| 374 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 375 | |
| 376 | buf[0] = 0xD7; |
| 377 | nxt2k_writedata(nxt, 0xd7, buf, 1); |
| 378 | |
| 379 | buf[0] = 0x07; |
| 380 | buf[1] = 0xfe; |
| 381 | nxt2k_writedata(nxt, 0x35, buf, 2); |
| 382 | buf[0] = 0x12; |
| 383 | nxt2k_writedata(nxt, 0x34, buf, 1); |
| 384 | buf[0] = 0x80; |
| 385 | nxt2k_writedata(nxt, 0x21, buf, 1); |
| 386 | |
| 387 | buf[0] = 0x21; |
| 388 | nxt2k_writedata(nxt, 0x0a, buf, 1); |
| 389 | |
| 390 | buf[0] = 0x01; |
| 391 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 392 | |
| 393 | /* fec mpeg mode */ |
| 394 | buf[0] = 0x7E; |
| 395 | buf[1] = 0x00; |
| 396 | nxt2k_writedata(nxt, 0xe9, buf, 2); |
| 397 | |
| 398 | /* mux selection */ |
| 399 | buf[0] = 0x00; |
| 400 | nxt2k_writedata(nxt, 0xcc, buf, 1); |
| 401 | |
| 402 | /* */ |
| 403 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 404 | buf[0] = 0x00; |
| 405 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 406 | |
| 407 | /* soft reset? */ |
| 408 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 409 | buf[0] = 0x10; |
| 410 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 411 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 412 | buf[0] = 0x00; |
| 413 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 414 | |
| 415 | /* */ |
| 416 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 417 | buf[0] = 0x01; |
| 418 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 419 | buf[0] = 0x70; |
| 420 | nxt2k_writereg(nxt, 0x81, buf, 1); |
| 421 | buf[0] = 0x31; buf[1] = 0x5E; buf[2] = 0x66; |
| 422 | nxt2k_writereg(nxt, 0x82, buf, 3); |
| 423 | |
| 424 | nxt2k_readreg(nxt, 0x88, buf, 1); |
| 425 | buf[0] = 0x11; |
| 426 | nxt2k_writereg(nxt, 0x88, buf, 1); |
| 427 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 428 | buf[0] = 0x40; |
| 429 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 430 | |
| 431 | nxt2k_readdata(nxt, 0x10, buf, 1); |
| 432 | buf[0] = 0x10; |
| 433 | nxt2k_writedata(nxt, 0x10, buf, 1); |
| 434 | nxt2k_readdata(nxt, 0x0a, buf, 1); |
| 435 | buf[0] = 0x21; |
| 436 | nxt2k_writedata(nxt, 0x0a, buf, 1); |
| 437 | |
| 438 | nxt2k4_mc_init(nxt); |
| 439 | |
| 440 | buf[0] = 0x21; |
| 441 | nxt2k_writedata(nxt, 0x0a, buf, 1); |
| 442 | buf[0] = 0x7e; |
| 443 | nxt2k_writedata(nxt, 0xe9, buf, 1); |
| 444 | buf[0] = 0x00; |
| 445 | nxt2k_writedata(nxt, 0xea, buf, 1); |
| 446 | |
| 447 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 448 | buf[0] = 0x00; |
| 449 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 450 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 451 | buf[0] = 0x00; |
| 452 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 453 | |
| 454 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 455 | buf[0] = 0x10; |
| 456 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 457 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 458 | buf[0] = 0x00; |
| 459 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 460 | |
| 461 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 462 | buf[0] = 0x04; |
| 463 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 464 | buf[0] = 0x00; |
| 465 | nxt2k_writereg(nxt, 0x81, buf, 1); |
| 466 | buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00; |
| 467 | nxt2k_writereg(nxt, 0x82, buf, 3); |
| 468 | |
| 469 | nxt2k_readreg(nxt, 0x88, buf, 1); |
| 470 | buf[0] = 0x11; |
| 471 | nxt2k_writereg(nxt, 0x88, buf, 1); |
| 472 | |
| 473 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 474 | buf[0] = 0x44; |
| 475 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 476 | |
| 477 | /* init tuner */ |
| 478 | nxt2k_readdata(nxt, 0x10, buf, 1); |
| 479 | buf[0] = 0x12; |
| 480 | nxt2k_writedata(nxt, 0x10, buf,1); |
| 481 | buf[0] = 0x04; |
| 482 | nxt2k_writedata(nxt, 0x13, buf,1); |
| 483 | buf[0] = 0x00; |
| 484 | nxt2k_writedata(nxt, 0x16, buf,1); |
| 485 | buf[0] = 0x04; |
| 486 | nxt2k_writedata(nxt, 0x14, buf,1); |
| 487 | buf[0] = 0x00; |
| 488 | nxt2k_writedata(nxt, 0x14, buf,1); |
| 489 | nxt2k_writedata(nxt, 0x17, buf,1); |
| 490 | nxt2k_writedata(nxt, 0x14, buf,1); |
| 491 | nxt2k_writedata(nxt, 0x17, buf,1); |
| 492 | |
| 493 | success = 1; |
| 494 | return success; |
| 495 | } |
| 496 | |
| 497 | uint16_t |
| 498 | nxt2k_get_signal(struct nxt2k *nxt) |
| 499 | { |
| 500 | uint16_t temp; |
| 501 | uint8_t b[2]; |
| 502 | |
| 503 | b[0] = 0x00; |
| 504 | nxt2k_writedata(nxt, 0xa1, b, 1); |
| 505 | |
| 506 | nxt2k_readreg(nxt, 0xa6, b, 2); |
| 507 | |
| 508 | temp = (b[0] << 8) | b[1]; |
| 509 | |
| 510 | printf("a6: %04hx\n" , temp); |
| 511 | |
| 512 | return 0x7fff - temp * 16; |
| 513 | } |
| 514 | |
| 515 | uint16_t |
| 516 | nxt2k_get_snr(struct nxt2k *nxt) |
| 517 | { |
| 518 | uint32_t tsnr; |
| 519 | uint16_t temp, temp2; |
| 520 | uint8_t b[2]; |
| 521 | |
| 522 | b[0] = 0x00; |
| 523 | nxt2k_writedata(nxt, 0xa1, b, 1); |
| 524 | |
| 525 | nxt2k_readreg(nxt, 0xa6, b, 2); |
| 526 | |
| 527 | temp = (b[0] << 8) | b[1]; |
| 528 | |
| 529 | temp2 = 0x7fff - temp; |
| 530 | |
| 531 | printf("snr temp2: %04hx\n" , temp2); |
| 532 | |
| 533 | if (temp2 > 0x7f00) |
| 534 | tsnr = 1000*24+(1000*(30-24)*(temp2-0x7f00)/(0x7fff-0x7f00)); |
| 535 | else if ( temp2 > 0x7ec0) |
| 536 | tsnr = 1000*18+(1000*(24-18)*(temp2-0x7ec0)/(0x7f00-0x7ec0)); |
| 537 | else if ( temp2 > 0x7c00) |
| 538 | tsnr = 1000*12+(1000*(18-12)*(temp2-0x7c00)/(0x7ec0-0x7c00)); |
| 539 | else |
| 540 | tsnr = 1000*0+(1000*(12-0)*(temp2-0)/(0x7c00-0)); |
| 541 | |
| 542 | printf("snr tsnr: %08x\n" , tsnr); |
| 543 | |
| 544 | return ((tsnr * 0xffff)/32000); |
| 545 | } |
| 546 | |
| 547 | fe_status_t |
| 548 | nxt2k_get_dtv_status(struct nxt2k *nxt) |
| 549 | { |
| 550 | uint8_t reg; |
| 551 | fe_status_t status = 0; |
| 552 | |
| 553 | nxt2k_readdata(nxt, 0x31, ®, 1); |
| 554 | if (reg & 0x20) { |
| 555 | status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | |
| 556 | FE_HAS_SYNC | FE_HAS_LOCK; |
| 557 | } |
| 558 | |
| 559 | return status; |
| 560 | } |
| 561 | |
| 562 | #if notyet |
| 563 | int |
| 564 | nxt2k_fe_read_ucblocks(struct nxt2k *nxt, uint32_t *ucblk) |
| 565 | { |
| 566 | uint8_t reg[3]; |
| 567 | |
| 568 | nxt2k_readreg(nxt, 0xe6, reg, 3); |
| 569 | *ucblk = reg[2]; |
| 570 | |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | int |
| 575 | nxt2k_fe_read_ber(struct nxt2k *nxt, uint32_t *ber) |
| 576 | { |
| 577 | uint8_t reg[3]; |
| 578 | |
| 579 | nxt2k_readreg(nxt, 0xe6, reg, 3); |
| 580 | |
| 581 | *ber = ((reg[0] << 8) + reg[1]) * 8; |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | #endif |
| 586 | |
| 587 | static int |
| 588 | nxt2k_fe_set_frontend(struct nxt2k *nxt, fe_modulation_t modulation) |
| 589 | { |
| 590 | uint8_t buf[5]; |
| 591 | |
| 592 | if (nxt->loaded != true) |
| 593 | nxt2k4_init(nxt); |
| 594 | |
| 595 | nxt2k_mc_stop(nxt); |
| 596 | |
| 597 | { /* 2k4 */ |
| 598 | /* make sure demod is set to digital */ |
| 599 | buf[0] = 0x04; |
| 600 | nxt2k_writedata(nxt, 0x14, buf, 1); |
| 601 | buf[0] = 0x00; |
| 602 | nxt2k_writedata(nxt, 0x17, buf, 1); |
| 603 | } |
| 604 | |
| 605 | /* QAM/VSB punctured/non-punctured goes here */ |
| 606 | |
| 607 | /* tune in */ |
| 608 | /* maybe ensure tuner managed to tune in? */ |
| 609 | |
| 610 | /* tuning done, reset agc */ |
| 611 | nxt2k_agc_reset(nxt); |
| 612 | |
| 613 | /* set target power level */ |
| 614 | switch (modulation) { |
| 615 | case VSB_8: |
| 616 | buf[0] = 0x70; |
| 617 | break; |
| 618 | case QAM_256: |
| 619 | case QAM_64: |
| 620 | buf[0] = 0x74; |
| 621 | break; |
| 622 | default: |
| 623 | return EINVAL; |
| 624 | /* NOTREACHED */ |
| 625 | } |
| 626 | nxt2k_writedata(nxt, 0x42, buf, 1); |
| 627 | |
| 628 | /* configure sdm */ |
| 629 | buf[0] = 0x07; /* 2k4 */ |
| 630 | nxt2k_writedata(nxt, 0x57, buf, 1); |
| 631 | |
| 632 | /* write sdm1 input */ |
| 633 | buf[0] = 0x10; |
| 634 | buf[1] = 0x00; |
| 635 | nxt2k_writedata(nxt, 0x58, buf, 2); /* 2k4 */ |
| 636 | |
| 637 | /* write sdmx input */ |
| 638 | switch (modulation) { |
| 639 | case VSB_8: |
| 640 | buf[0] = 0x60; |
| 641 | break; |
| 642 | case QAM_256: |
| 643 | buf[0] = 0x64; |
| 644 | break; |
| 645 | case QAM_64: |
| 646 | buf[0] = 0x68; |
| 647 | break; |
| 648 | default: |
| 649 | return EINVAL; |
| 650 | /* NOTREACHED */ |
| 651 | } |
| 652 | buf[1] = 0x00; |
| 653 | nxt2k_writedata(nxt, 0x5c, buf, 2); /* 2k4 */ |
| 654 | |
| 655 | /* write adc power lpf fc */ |
| 656 | buf[0] = 0x05; |
| 657 | nxt2k_writedata(nxt, 0x43, buf, 1); |
| 658 | |
| 659 | { /* 2k4 */ |
| 660 | buf[0] = 0x00; |
| 661 | buf[1] = 0x00; |
| 662 | nxt2k_writedata(nxt, 0x46, buf, 2); |
| 663 | } |
| 664 | |
| 665 | /* write accumulator2 input */ |
| 666 | buf[0] = 0x80; |
| 667 | buf[1] = 0x00; |
| 668 | nxt2k_writedata(nxt, 0x4b, buf, 2); /* 2k4 */ |
| 669 | |
| 670 | /* write kg1 */ |
| 671 | buf[0] = 0x00; |
| 672 | nxt2k_writedata(nxt, 0x4d, buf, 1); |
| 673 | |
| 674 | /* write sdm12 lpf fc */ |
| 675 | buf[0] = 0x44; |
| 676 | nxt2k_writedata(nxt, 0x55, buf, 1); |
| 677 | |
| 678 | /* write agc control reg */ |
| 679 | buf[0] = 0x04; |
| 680 | nxt2k_writedata(nxt, 0x41, buf, 1); |
| 681 | |
| 682 | { /* 2k4 */ |
| 683 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 684 | buf[0] = 0x24; |
| 685 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 686 | |
| 687 | /* soft reset? */ |
| 688 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 689 | buf[0] = 0x10; |
| 690 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 691 | nxt2k_readreg(nxt, 0x08, buf, 1); |
| 692 | buf[0] = 0x00; |
| 693 | nxt2k_writereg(nxt, 0x08, buf, 1); |
| 694 | |
| 695 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 696 | buf[0] = 0x04; |
| 697 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 698 | |
| 699 | buf[0] = 0x00; |
| 700 | nxt2k_writereg(nxt, 0x81, buf, 1); |
| 701 | |
| 702 | buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00; |
| 703 | nxt2k_writereg(nxt, 0x82, buf, 3); |
| 704 | |
| 705 | nxt2k_readreg(nxt, 0x88, buf, 1); |
| 706 | buf[0] = 0x11; |
| 707 | nxt2k_writereg(nxt, 0x88, buf, 1); |
| 708 | |
| 709 | nxt2k_readreg(nxt, 0x80, buf, 1); |
| 710 | buf[0] = 0x44; |
| 711 | nxt2k_writereg(nxt, 0x80, buf, 1); |
| 712 | } |
| 713 | |
| 714 | /* write agc ucgp0 */ |
| 715 | switch (modulation) { |
| 716 | case VSB_8: |
| 717 | buf[0] = 0x00; |
| 718 | break; |
| 719 | case QAM_64: |
| 720 | buf[0] = 0x02; |
| 721 | break; |
| 722 | case QAM_256: |
| 723 | buf[0] = 0x03; |
| 724 | break; |
| 725 | default: |
| 726 | return EINVAL; |
| 727 | /* NOTREACHED */ |
| 728 | } |
| 729 | nxt2k_writedata(nxt, 0x30, buf, 1); |
| 730 | |
| 731 | /* write agc control reg */ |
| 732 | buf[0] = 0x00; |
| 733 | nxt2k_writedata(nxt, 0x41, buf, 1); |
| 734 | |
| 735 | /* write accumulator2 input */ |
| 736 | buf[0] = 0x80; |
| 737 | buf[1] = 0x00; |
| 738 | { /* 2k4 */ |
| 739 | nxt2k_writedata(nxt, 0x49, buf, 2); |
| 740 | nxt2k_writedata(nxt, 0x4b, buf, 2); |
| 741 | } |
| 742 | |
| 743 | /* write agc control reg */ |
| 744 | buf[0] = 0x04; |
| 745 | nxt2k_writedata(nxt, 0x41, buf, 1); |
| 746 | |
| 747 | nxt2k_mc_start(nxt); |
| 748 | |
| 749 | { /* 2k4 */ |
| 750 | nxt2k4_mc_init(nxt); |
| 751 | buf[0] = 0xf0; |
| 752 | buf[1] = 0x00; |
| 753 | nxt2k_writedata(nxt, 0x5c, buf, 2); |
| 754 | } |
| 755 | |
| 756 | /* "adjacent channel detection" code would go here */ |
| 757 | |
| 758 | return 0; |
| 759 | } |
| 760 | |
| 761 | static int |
| 762 | nxt2k_init(struct nxt2k *nxt) |
| 763 | { |
| 764 | int ret = 0; |
| 765 | |
| 766 | printf("%s\n" , __func__); |
| 767 | |
| 768 | if (nxt->loaded != 1) |
| 769 | ret = nxt2k4_init(nxt); |
| 770 | |
| 771 | return ret; |
| 772 | } |
| 773 | |
| 774 | |
| 775 | struct nxt2k * |
| 776 | nxt2k_open(device_t parent, i2c_tag_t tag, i2c_addr_t addr, unsigned int if_freq) |
| 777 | { |
| 778 | struct nxt2k *nxt; |
| 779 | int e; |
| 780 | uint8_t b[5]; |
| 781 | |
| 782 | nxt = kmem_alloc(sizeof(*nxt), KM_SLEEP); |
| 783 | if (nxt == NULL) |
| 784 | return NULL; |
| 785 | |
| 786 | nxt->parent = parent; |
| 787 | nxt->tag = tag; |
| 788 | nxt->addr = addr; |
| 789 | |
| 790 | /* read chip ids */ |
| 791 | e = nxt2k_readdata(nxt, 0x00, b, 5); |
| 792 | |
| 793 | if (e) { |
| 794 | printf("%s read failed %d\n" , __func__, e); |
| 795 | kmem_free(nxt, sizeof(*nxt)); |
| 796 | return NULL; |
| 797 | } |
| 798 | |
| 799 | if (b[0] != 0x05) { |
| 800 | printf("%s unsupported %02x %02x %02x %02x %02x\n" , |
| 801 | __func__, b[0], b[1], b[2], b[3], b[4]); |
| 802 | kmem_free(nxt, sizeof(*nxt)); |
| 803 | return NULL; |
| 804 | } |
| 805 | |
| 806 | mutex_init(&nxt->mtx, MUTEX_DEFAULT, IPL_NONE); |
| 807 | cv_init(&nxt->cv, "nxtpl" ); |
| 808 | |
| 809 | nxt->loaded = false; |
| 810 | |
| 811 | return nxt; |
| 812 | } |
| 813 | |
| 814 | void |
| 815 | nxt2k_close(struct nxt2k *nxt) |
| 816 | { |
| 817 | kmem_free(nxt, sizeof(*nxt)); |
| 818 | } |
| 819 | |
| 820 | void |
| 821 | nxt2k_enable(struct nxt2k *nxt, bool enable) |
| 822 | { |
| 823 | if (enable == true) |
| 824 | nxt2k_init(nxt); |
| 825 | } |
| 826 | |
| 827 | int |
| 828 | nxt2k_set_modulation(struct nxt2k *nxt, fe_modulation_t modulation) |
| 829 | { |
| 830 | return nxt2k_fe_set_frontend(nxt, modulation); |
| 831 | } |
| 832 | |
| 833 | MODULE(MODULE_CLASS_DRIVER, nxt2k, "i2cexec" ); |
| 834 | |
| 835 | static int |
| 836 | nxt2k_modcmd(modcmd_t cmd, void *opaque) |
| 837 | { |
| 838 | if (cmd == MODULE_CMD_INIT || cmd == MODULE_CMD_FINI) |
| 839 | return 0; |
| 840 | return ENOTTY; |
| 841 | } |
| 842 | |