1 /* 2 STB0899 Multistandard Frontend driver 3 Copyright (C) Manu Abraham (abraham.manu@gmail.com) 4 5 Copyright (C) ST Microelectronics 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 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #include <linux/init.h> 23 #include <linux/jiffies.h> 24 #include <linux/kernel.h> 25 #include <linux/module.h> 26 #include <linux/slab.h> 27 #include <linux/string.h> 28 29 #include <linux/dvb/frontend.h> 30 #include "dvb_frontend.h" 31 32 #include "stb0899_drv.h" 33 #include "stb0899_priv.h" 34 #include "stb0899_reg.h" 35 36 /* Max transfer size done by I2C transfer functions */ 37 #define MAX_XFER_SIZE 64 38 39 static unsigned int verbose = 0;//1; 40 module_param(verbose, int, 0644); 41 42 /* C/N in dB/10, NIRM/NIRL */ 43 static const struct stb0899_tab stb0899_cn_tab[] = { 44 { 200, 2600 }, 45 { 190, 2700 }, 46 { 180, 2860 }, 47 { 170, 3020 }, 48 { 160, 3210 }, 49 { 150, 3440 }, 50 { 140, 3710 }, 51 { 130, 4010 }, 52 { 120, 4360 }, 53 { 110, 4740 }, 54 { 100, 5190 }, 55 { 90, 5670 }, 56 { 80, 6200 }, 57 { 70, 6770 }, 58 { 60, 7360 }, 59 { 50, 7970 }, 60 { 40, 8250 }, 61 { 30, 9000 }, 62 { 20, 9450 }, 63 { 15, 9600 }, 64 }; 65 66 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10. 67 * As measured, connected to a modulator. 68 * -8.0 to -50.0 dBm directly connected, 69 * -52.0 to -74.8 with extra attenuation. 70 * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm. 71 * Crude linear extrapolation below -84.8dBm and above -8.0dBm. 72 */ 73 static const struct stb0899_tab stb0899_dvbsrf_tab[] = { 74 { -750, -128 }, 75 { -748, -94 }, 76 { -745, -92 }, 77 { -735, -90 }, 78 { -720, -87 }, 79 { -670, -77 }, 80 { -640, -70 }, 81 { -610, -62 }, 82 { -600, -60 }, 83 { -590, -56 }, 84 { -560, -41 }, 85 { -540, -25 }, 86 { -530, -17 }, 87 { -520, -11 }, 88 { -500, 1 }, 89 { -490, 6 }, 90 { -480, 10 }, 91 { -440, 22 }, 92 { -420, 27 }, 93 { -400, 31 }, 94 { -380, 34 }, 95 { -340, 40 }, 96 { -320, 43 }, 97 { -280, 48 }, 98 { -250, 52 }, 99 { -230, 55 }, 100 { -180, 61 }, 101 { -140, 66 }, 102 { -90, 73 }, 103 { -80, 74 }, 104 { 500, 127 } 105 }; 106 107 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10. 108 * As measured, connected to a modulator. 109 * -8.0 to -50.1 dBm directly connected, 110 * -53.0 to -76.6 with extra attenuation. 111 * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm. 112 * Crude linear extrapolation below -76.6dBm and above -8.0dBm. 113 */ 114 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = { 115 { 700, 0 }, 116 { -80, 3217 }, 117 { -150, 3893 }, 118 { -190, 4217 }, 119 { -240, 4621 }, 120 { -280, 4945 }, 121 { -320, 5273 }, 122 { -350, 5545 }, 123 { -370, 5741 }, 124 { -410, 6147 }, 125 { -450, 6671 }, 126 { -490, 7413 }, 127 { -501, 7665 }, 128 { -530, 8767 }, 129 { -560, 10219 }, 130 { -580, 10939 }, 131 { -590, 11518 }, 132 { -600, 11723 }, 133 { -650, 12659 }, 134 { -690, 13219 }, 135 { -730, 13645 }, 136 { -750, 13909 }, 137 { -766, 14153 }, 138 { -950, 16383 } 139 }; 140 141 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/ 142 static struct stb0899_tab stb0899_quant_tab[] = { 143 { 0, 0 }, 144 { 0, 100 }, 145 { 600, 200 }, 146 { 950, 299 }, 147 { 1200, 398 }, 148 { 1400, 501 }, 149 { 1560, 603 }, 150 { 1690, 700 }, 151 { 1810, 804 }, 152 { 1910, 902 }, 153 { 2000, 1000 }, 154 { 2080, 1096 }, 155 { 2160, 1202 }, 156 { 2230, 1303 }, 157 { 2350, 1496 }, 158 { 2410, 1603 }, 159 { 2460, 1698 }, 160 { 2510, 1799 }, 161 { 2600, 1995 }, 162 { 2650, 2113 }, 163 { 2690, 2213 }, 164 { 2720, 2291 }, 165 { 2760, 2399 }, 166 { 2800, 2512 }, 167 { 2860, 2692 }, 168 { 2930, 2917 }, 169 { 2960, 3020 }, 170 { 3010, 3199 }, 171 { 3040, 3311 }, 172 { 3060, 3388 }, 173 { 3120, 3631 }, 174 { 3190, 3936 }, 175 { 3400, 5012 }, 176 { 3610, 6383 }, 177 { 3800, 7943 }, 178 { 4210, 12735 }, 179 { 4500, 17783 }, 180 { 4690, 22131 }, 181 { 4810, 25410 } 182 }; 183 184 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */ 185 static struct stb0899_tab stb0899_est_tab[] = { 186 { 0, 0 }, 187 { 0, 1 }, 188 { 301, 2 }, 189 { 1204, 16 }, 190 { 1806, 64 }, 191 { 2408, 256 }, 192 { 2709, 512 }, 193 { 3010, 1023 }, 194 { 3311, 2046 }, 195 { 3612, 4093 }, 196 { 3823, 6653 }, 197 { 3913, 8185 }, 198 { 4010, 10233 }, 199 { 4107, 12794 }, 200 { 4214, 16368 }, 201 { 4266, 18450 }, 202 { 4311, 20464 }, 203 { 4353, 22542 }, 204 { 4391, 24604 }, 205 { 4425, 26607 }, 206 { 4457, 28642 }, 207 { 4487, 30690 }, 208 { 4515, 32734 }, 209 { 4612, 40926 }, 210 { 4692, 49204 }, 211 { 4816, 65464 }, 212 { 4913, 81846 }, 213 { 4993, 98401 }, 214 { 5060, 114815 }, 215 { 5118, 131220 }, 216 { 5200, 158489 }, 217 { 5300, 199526 }, 218 { 5400, 251189 }, 219 { 5500, 316228 }, 220 { 5600, 398107 }, 221 { 5720, 524807 }, 222 { 5721, 526017 }, 223 }; 224 225 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 226 { 227 int ret; 228 229 u8 b0[] = { reg >> 8, reg & 0xff }; 230 u8 buf; 231 232 struct i2c_msg msg[] = { 233 { 234 .addr = state->config->demod_address, 235 .flags = 0, 236 .buf = b0, 237 .len = 2 238 },{ 239 .addr = state->config->demod_address, 240 .flags = I2C_M_RD, 241 .buf = &buf, 242 .len = 1 243 } 244 }; 245 246 ret = i2c_transfer(state->i2c, msg, 2); 247 if (ret != 2) { 248 if (ret != -ERESTARTSYS) 249 dprintk(state->verbose, FE_ERROR, 1, 250 "Read error, Reg=[0x%02x], Status=%d", 251 reg, ret); 252 253 return ret < 0 ? ret : -EREMOTEIO; 254 } 255 if (unlikely(*state->verbose >= FE_DEBUGREG)) 256 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x", 257 reg, buf); 258 259 return (unsigned int)buf; 260 } 261 262 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 263 { 264 int result; 265 266 result = _stb0899_read_reg(state, reg); 267 /* 268 * Bug ID 9: 269 * access to 0xf2xx/0xf6xx 270 * must be followed by read from 0xf2ff/0xf6ff. 271 */ 272 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 273 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 274 _stb0899_read_reg(state, (reg | 0x00ff)); 275 276 return result; 277 } 278 279 u32 _stb0899_read_s2reg(struct stb0899_state *state, 280 u32 stb0899_i2cdev, 281 u32 stb0899_base_addr, 282 u16 stb0899_reg_offset) 283 { 284 int status; 285 u32 data; 286 u8 buf[7] = { 0 }; 287 u16 tmpaddr; 288 289 u8 buf_0[] = { 290 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 291 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 292 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 293 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 294 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 295 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 296 }; 297 u8 buf_1[] = { 298 0x00, /* 0xf3 Reg Offset */ 299 0x00, /* 0x44 Reg Offset */ 300 }; 301 302 struct i2c_msg msg_0 = { 303 .addr = state->config->demod_address, 304 .flags = 0, 305 .buf = buf_0, 306 .len = 6 307 }; 308 309 struct i2c_msg msg_1 = { 310 .addr = state->config->demod_address, 311 .flags = 0, 312 .buf = buf_1, 313 .len = 2 314 }; 315 316 struct i2c_msg msg_r = { 317 .addr = state->config->demod_address, 318 .flags = I2C_M_RD, 319 .buf = buf, 320 .len = 4 321 }; 322 323 tmpaddr = stb0899_reg_offset & 0xff00; 324 if (!(stb0899_reg_offset & 0x8)) 325 tmpaddr = stb0899_reg_offset | 0x20; 326 327 buf_1[0] = GETBYTE(tmpaddr, BYTE1); 328 buf_1[1] = GETBYTE(tmpaddr, BYTE0); 329 330 status = i2c_transfer(state->i2c, &msg_0, 1); 331 if (status < 1) { 332 if (status != -ERESTARTSYS) 333 printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 334 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 335 336 goto err; 337 } 338 339 /* Dummy */ 340 status = i2c_transfer(state->i2c, &msg_1, 1); 341 if (status < 1) 342 goto err; 343 344 status = i2c_transfer(state->i2c, &msg_r, 1); 345 if (status < 1) 346 goto err; 347 348 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 349 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 350 351 /* Actual */ 352 status = i2c_transfer(state->i2c, &msg_1, 1); 353 if (status < 1) { 354 if (status != -ERESTARTSYS) 355 printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 356 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 357 goto err; 358 } 359 360 status = i2c_transfer(state->i2c, &msg_r, 1); 361 if (status < 1) { 362 if (status != -ERESTARTSYS) 363 printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 364 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 365 return status < 0 ? status : -EREMOTEIO; 366 } 367 368 data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]); 369 if (unlikely(*state->verbose >= FE_DEBUGREG)) 370 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 371 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data); 372 373 return data; 374 375 err: 376 return status < 0 ? status : -EREMOTEIO; 377 } 378 379 int stb0899_write_s2reg(struct stb0899_state *state, 380 u32 stb0899_i2cdev, 381 u32 stb0899_base_addr, 382 u16 stb0899_reg_offset, 383 u32 stb0899_data) 384 { 385 int status; 386 387 /* Base Address Setup */ 388 u8 buf_0[] = { 389 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 390 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 391 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 392 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 393 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 394 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 395 }; 396 u8 buf_1[] = { 397 0x00, /* 0xf3 Reg Offset */ 398 0x00, /* 0x44 Reg Offset */ 399 0x00, /* data */ 400 0x00, /* data */ 401 0x00, /* data */ 402 0x00, /* data */ 403 }; 404 405 struct i2c_msg msg_0 = { 406 .addr = state->config->demod_address, 407 .flags = 0, 408 .buf = buf_0, 409 .len = 6 410 }; 411 412 struct i2c_msg msg_1 = { 413 .addr = state->config->demod_address, 414 .flags = 0, 415 .buf = buf_1, 416 .len = 6 417 }; 418 419 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 420 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 421 buf_1[2] = GETBYTE(stb0899_data, BYTE0); 422 buf_1[3] = GETBYTE(stb0899_data, BYTE1); 423 buf_1[4] = GETBYTE(stb0899_data, BYTE2); 424 buf_1[5] = GETBYTE(stb0899_data, BYTE3); 425 426 if (unlikely(*state->verbose >= FE_DEBUGREG)) 427 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 428 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data); 429 430 status = i2c_transfer(state->i2c, &msg_0, 1); 431 if (unlikely(status < 1)) { 432 if (status != -ERESTARTSYS) 433 printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 434 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 435 goto err; 436 } 437 status = i2c_transfer(state->i2c, &msg_1, 1); 438 if (unlikely(status < 1)) { 439 if (status != -ERESTARTSYS) 440 printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 441 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 442 443 return status < 0 ? status : -EREMOTEIO; 444 } 445 446 return 0; 447 448 err: 449 return status < 0 ? status : -EREMOTEIO; 450 } 451 452 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count) 453 { 454 int status; 455 456 u8 b0[] = { reg >> 8, reg & 0xff }; 457 458 struct i2c_msg msg[] = { 459 { 460 .addr = state->config->demod_address, 461 .flags = 0, 462 .buf = b0, 463 .len = 2 464 },{ 465 .addr = state->config->demod_address, 466 .flags = I2C_M_RD, 467 .buf = buf, 468 .len = count 469 } 470 }; 471 472 status = i2c_transfer(state->i2c, msg, 2); 473 if (status != 2) { 474 if (status != -ERESTARTSYS) 475 printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n", 476 __func__, reg, count, status); 477 goto err; 478 } 479 /* 480 * Bug ID 9: 481 * access to 0xf2xx/0xf6xx 482 * must be followed by read from 0xf2ff/0xf6ff. 483 */ 484 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 485 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 486 _stb0899_read_reg(state, (reg | 0x00ff)); 487 488 dprintk(state->verbose, FE_DEBUGREG, 1, 489 "%s [0x%04x]: %*ph", __func__, reg, count, buf); 490 491 return 0; 492 err: 493 return status < 0 ? status : -EREMOTEIO; 494 } 495 496 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count) 497 { 498 int ret; 499 u8 buf[MAX_XFER_SIZE]; 500 struct i2c_msg i2c_msg = { 501 .addr = state->config->demod_address, 502 .flags = 0, 503 .buf = buf, 504 .len = 2 + count 505 }; 506 507 if (2 + count > sizeof(buf)) { 508 printk(KERN_WARNING 509 "%s: i2c wr reg=%04x: len=%d is too big!\n", 510 KBUILD_MODNAME, reg, count); 511 return -EINVAL; 512 } 513 514 buf[0] = reg >> 8; 515 buf[1] = reg & 0xff; 516 memcpy(&buf[2], data, count); 517 518 dprintk(state->verbose, FE_DEBUGREG, 1, 519 "%s [0x%04x]: %*ph", __func__, reg, count, data); 520 ret = i2c_transfer(state->i2c, &i2c_msg, 1); 521 522 /* 523 * Bug ID 9: 524 * access to 0xf2xx/0xf6xx 525 * must be followed by read from 0xf2ff/0xf6ff. 526 */ 527 if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 528 stb0899_read_reg(state, (reg | 0x00ff)); 529 530 if (ret != 1) { 531 if (ret != -ERESTARTSYS) 532 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d", 533 reg, data[0], count, ret); 534 return ret < 0 ? ret : -EREMOTEIO; 535 } 536 537 return 0; 538 } 539 540 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data) 541 { 542 return stb0899_write_regs(state, reg, &data, 1); 543 } 544 545 /* 546 * stb0899_get_mclk 547 * Get STB0899 master clock frequency 548 * ExtClk: external clock frequency (Hz) 549 */ 550 static u32 stb0899_get_mclk(struct stb0899_state *state) 551 { 552 u32 mclk = 0, div = 0; 553 554 div = stb0899_read_reg(state, STB0899_NCOARSE); 555 mclk = (div + 1) * state->config->xtal_freq / 6; 556 dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk); 557 558 return mclk; 559 } 560 561 /* 562 * stb0899_set_mclk 563 * Set STB0899 master Clock frequency 564 * Mclk: demodulator master clock 565 * ExtClk: external clock frequency (Hz) 566 */ 567 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk) 568 { 569 struct stb0899_internal *internal = &state->internal; 570 u8 mdiv = 0; 571 572 dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config); 573 mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1; 574 dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv); 575 576 stb0899_write_reg(state, STB0899_NCOARSE, mdiv); 577 internal->master_clk = stb0899_get_mclk(state); 578 579 dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk); 580 } 581 582 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable) 583 { 584 struct stb0899_config *config = state->config; 585 const struct stb0899_postproc *postproc = config->postproc; 586 587 /* post process event */ 588 if (postproc) { 589 if (enable) { 590 if (postproc[ctl].level == STB0899_GPIOPULLUP) 591 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 592 else 593 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 594 } else { 595 if (postproc[ctl].level == STB0899_GPIOPULLUP) 596 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 597 else 598 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 599 } 600 } 601 return 0; 602 } 603 604 static void stb0899_detach(struct dvb_frontend *fe) 605 { 606 struct stb0899_state *state = fe->demodulator_priv; 607 608 /* post process event */ 609 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 610 } 611 612 static void stb0899_release(struct dvb_frontend *fe) 613 { 614 struct stb0899_state *state = fe->demodulator_priv; 615 616 dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend"); 617 kfree(state); 618 } 619 620 /* 621 * stb0899_get_alpha 622 * return: rolloff 623 */ 624 static int stb0899_get_alpha(struct stb0899_state *state) 625 { 626 u8 mode_coeff; 627 628 mode_coeff = stb0899_read_reg(state, STB0899_DEMOD); 629 630 if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1) 631 return 20; 632 else 633 return 35; 634 } 635 636 /* 637 * stb0899_init_calc 638 */ 639 static void stb0899_init_calc(struct stb0899_state *state) 640 { 641 struct stb0899_internal *internal = &state->internal; 642 int master_clk; 643 u8 agc[2]; 644 u32 reg; 645 646 /* Read registers (in burst mode) */ 647 stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */ 648 649 /* Initial calculations */ 650 master_clk = stb0899_get_mclk(state); 651 internal->t_agc1 = 0; 652 internal->t_agc2 = 0; 653 internal->master_clk = master_clk; 654 internal->mclk = master_clk / 65536L; 655 internal->rolloff = stb0899_get_alpha(state); 656 657 /* DVBS2 Initial calculations */ 658 /* Set AGC value to the middle */ 659 internal->agc_gain = 8154; 660 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); 661 STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain); 662 stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); 663 664 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA); 665 internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg); 666 667 internal->center_freq = 0; 668 internal->av_frame_coarse = 10; 669 internal->av_frame_fine = 20; 670 internal->step_size = 2; 671 /* 672 if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO)) 673 pParams->IQLocked = 0; 674 else 675 pParams->IQLocked = 1; 676 */ 677 } 678 679 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout) 680 { 681 u8 reg = 0; 682 unsigned long start = jiffies; 683 684 while (1) { 685 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 686 if (!STB0899_GETFIELD(FIFOFULL, reg)) 687 break; 688 if (time_after(jiffies, start + timeout)) { 689 dprintk(state->verbose, FE_ERROR, 1, "timed out !!"); 690 return -ETIMEDOUT; 691 } 692 } 693 694 return 0; 695 } 696 697 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) 698 { 699 struct stb0899_state *state = fe->demodulator_priv; 700 u8 reg, i; 701 702 if (cmd->msg_len > sizeof(cmd->msg)) 703 return -EINVAL; 704 705 /* enable FIFO precharge */ 706 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 707 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1); 708 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 709 for (i = 0; i < cmd->msg_len; i++) { 710 /* wait for FIFO empty */ 711 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0) 712 return -ETIMEDOUT; 713 714 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]); 715 } 716 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 717 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0); 718 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 719 msleep(100); 720 return 0; 721 } 722 723 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout) 724 { 725 u8 reg = 0; 726 unsigned long start = jiffies; 727 728 while (!STB0899_GETFIELD(RXEND, reg)) { 729 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 730 if (time_after(jiffies, start + timeout)) { 731 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 732 return -ETIMEDOUT; 733 } 734 msleep(10); 735 } 736 737 return 0; 738 } 739 740 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply) 741 { 742 struct stb0899_state *state = fe->demodulator_priv; 743 u8 reg, length = 0, i; 744 int result; 745 746 if (stb0899_wait_diseqc_rxidle(state, 100) < 0) 747 return -ETIMEDOUT; 748 749 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 750 if (STB0899_GETFIELD(RXEND, reg)) { 751 752 reg = stb0899_read_reg(state, STB0899_DISRX_ST1); 753 length = STB0899_GETFIELD(FIFOBYTENBR, reg); 754 755 if (length > sizeof (reply->msg)) { 756 result = -EOVERFLOW; 757 goto exit; 758 } 759 reply->msg_len = length; 760 761 /* extract data */ 762 for (i = 0; i < length; i++) 763 reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO); 764 } 765 766 return 0; 767 exit: 768 769 return result; 770 } 771 772 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout) 773 { 774 u8 reg = 0; 775 unsigned long start = jiffies; 776 777 while (!STB0899_GETFIELD(TXIDLE, reg)) { 778 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 779 if (time_after(jiffies, start + timeout)) { 780 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 781 return -ETIMEDOUT; 782 } 783 msleep(10); 784 } 785 return 0; 786 } 787 788 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, 789 enum fe_sec_mini_cmd burst) 790 { 791 struct stb0899_state *state = fe->demodulator_priv; 792 u8 reg, old_state; 793 794 /* wait for diseqc idle */ 795 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 796 return -ETIMEDOUT; 797 798 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 799 old_state = reg; 800 /* set to burst mode */ 801 STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03); 802 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01); 803 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 804 switch (burst) { 805 case SEC_MINI_A: 806 /* unmodulated */ 807 stb0899_write_reg(state, STB0899_DISFIFO, 0x00); 808 break; 809 case SEC_MINI_B: 810 /* modulated */ 811 stb0899_write_reg(state, STB0899_DISFIFO, 0xff); 812 break; 813 } 814 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 815 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00); 816 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 817 /* wait for diseqc idle */ 818 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 819 return -ETIMEDOUT; 820 821 /* restore state */ 822 stb0899_write_reg(state, STB0899_DISCNTRL1, old_state); 823 824 return 0; 825 } 826 827 static int stb0899_diseqc_init(struct stb0899_state *state) 828 { 829 /* 830 struct dvb_diseqc_slave_reply rx_data; 831 */ 832 u8 f22_tx, reg; 833 834 u32 mclk, tx_freq = 22000;/* count = 0, i; */ 835 reg = stb0899_read_reg(state, STB0899_DISCNTRL2); 836 STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0); 837 stb0899_write_reg(state, STB0899_DISCNTRL2, reg); 838 839 /* disable Tx spy */ 840 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 841 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1); 842 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 843 844 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 845 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0); 846 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 847 848 mclk = stb0899_get_mclk(state); 849 f22_tx = mclk / (tx_freq * 32); 850 stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */ 851 state->rx_freq = 20000; 852 853 return 0; 854 } 855 856 static int stb0899_sleep(struct dvb_frontend *fe) 857 { 858 struct stb0899_state *state = fe->demodulator_priv; 859 /* 860 u8 reg; 861 */ 862 dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))"); 863 /* post process event */ 864 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 865 866 return 0; 867 } 868 869 static int stb0899_wakeup(struct dvb_frontend *fe) 870 { 871 int rc; 872 struct stb0899_state *state = fe->demodulator_priv; 873 874 if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI))) 875 return rc; 876 /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */ 877 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00))) 878 return rc; 879 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00))) 880 return rc; 881 882 /* post process event */ 883 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1); 884 885 return 0; 886 } 887 888 static int stb0899_init(struct dvb_frontend *fe) 889 { 890 int i; 891 struct stb0899_state *state = fe->demodulator_priv; 892 struct stb0899_config *config = state->config; 893 894 dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... "); 895 896 /* init device */ 897 dprintk(state->verbose, FE_DEBUG, 1, "init device"); 898 for (i = 0; config->init_dev[i].address != 0xffff; i++) 899 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data); 900 901 dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod"); 902 /* init S2 demod */ 903 for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++) 904 stb0899_write_s2reg(state, STB0899_S2DEMOD, 905 config->init_s2_demod[i].base_address, 906 config->init_s2_demod[i].offset, 907 config->init_s2_demod[i].data); 908 909 dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod"); 910 /* init S1 demod */ 911 for (i = 0; config->init_s1_demod[i].address != 0xffff; i++) 912 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data); 913 914 dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC"); 915 /* init S2 fec */ 916 for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++) 917 stb0899_write_s2reg(state, STB0899_S2FEC, 918 config->init_s2_fec[i].base_address, 919 config->init_s2_fec[i].offset, 920 config->init_s2_fec[i].data); 921 922 dprintk(state->verbose, FE_DEBUG, 1, "init TST"); 923 /* init test */ 924 for (i = 0; config->init_tst[i].address != 0xffff; i++) 925 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data); 926 927 stb0899_init_calc(state); 928 stb0899_diseqc_init(state); 929 930 return 0; 931 } 932 933 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val) 934 { 935 int res = 0; 936 int min = 0, med; 937 938 if (val < tab[min].read) 939 res = tab[min].real; 940 else if (val >= tab[max].read) 941 res = tab[max].real; 942 else { 943 while ((max - min) > 1) { 944 med = (max + min) / 2; 945 if (val >= tab[min].read && val < tab[med].read) 946 max = med; 947 else 948 min = med; 949 } 950 res = ((val - tab[min].read) * 951 (tab[max].real - tab[min].real) / 952 (tab[max].read - tab[min].read)) + 953 tab[min].real; 954 } 955 956 return res; 957 } 958 959 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 960 { 961 struct stb0899_state *state = fe->demodulator_priv; 962 struct stb0899_internal *internal = &state->internal; 963 964 int val; 965 u32 reg; 966 *strength = 0; 967 switch (state->delsys) { 968 case SYS_DVBS: 969 case SYS_DSS: 970 if (internal->lock) { 971 reg = stb0899_read_reg(state, STB0899_VSTATUS); 972 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 973 974 reg = stb0899_read_reg(state, STB0899_AGCIQIN); 975 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg); 976 977 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val); 978 *strength += 750; 979 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm", 980 val & 0xff, *strength); 981 } 982 } 983 break; 984 case SYS_DVBS2: 985 if (internal->lock) { 986 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN); 987 val = STB0899_GETFIELD(IF_AGC_GAIN, reg); 988 989 *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val); 990 *strength += 950; 991 dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm", 992 val & 0x3fff, *strength); 993 } 994 break; 995 default: 996 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 997 return -EINVAL; 998 } 999 1000 return 0; 1001 } 1002 1003 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr) 1004 { 1005 struct stb0899_state *state = fe->demodulator_priv; 1006 struct stb0899_internal *internal = &state->internal; 1007 1008 unsigned int val, quant, quantn = -1, est, estn = -1; 1009 u8 buf[2]; 1010 u32 reg; 1011 1012 *snr = 0; 1013 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1014 switch (state->delsys) { 1015 case SYS_DVBS: 1016 case SYS_DSS: 1017 if (internal->lock) { 1018 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1019 1020 stb0899_read_regs(state, STB0899_NIRM, buf, 2); 1021 val = MAKEWORD16(buf[0], buf[1]); 1022 1023 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val); 1024 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n", 1025 buf[0], buf[1], val, *snr); 1026 } 1027 } 1028 break; 1029 case SYS_DVBS2: 1030 if (internal->lock) { 1031 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); 1032 quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg); 1033 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); 1034 est = STB0899_GETFIELD(ESN0_EST, reg); 1035 if (est == 1) 1036 val = 301; /* C/N = 30.1 dB */ 1037 else if (est == 2) 1038 val = 270; /* C/N = 27.0 dB */ 1039 else { 1040 /* quantn = 100 * log(quant^2) */ 1041 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100); 1042 /* estn = 100 * log(est) */ 1043 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est); 1044 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */ 1045 val = (quantn - estn) / 10; 1046 } 1047 *snr = val; 1048 dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm", 1049 quant, quantn, est, estn, val); 1050 } 1051 break; 1052 default: 1053 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1054 return -EINVAL; 1055 } 1056 1057 return 0; 1058 } 1059 1060 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status) 1061 { 1062 struct stb0899_state *state = fe->demodulator_priv; 1063 struct stb0899_internal *internal = &state->internal; 1064 u8 reg; 1065 *status = 0; 1066 1067 switch (state->delsys) { 1068 case SYS_DVBS: 1069 case SYS_DSS: 1070 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS"); 1071 if (internal->lock) { 1072 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1073 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1074 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK"); 1075 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; 1076 1077 reg = stb0899_read_reg(state, STB0899_PLPARM); 1078 if (STB0899_GETFIELD(VITCURPUN, reg)) { 1079 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC"); 1080 *status |= FE_HAS_VITERBI | FE_HAS_SYNC; 1081 /* post process event */ 1082 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1083 } 1084 } 1085 } 1086 break; 1087 case SYS_DVBS2: 1088 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2"); 1089 if (internal->lock) { 1090 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); 1091 if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) { 1092 *status |= FE_HAS_CARRIER; 1093 dprintk(state->verbose, FE_DEBUG, 1, 1094 "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER"); 1095 1096 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); 1097 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) { 1098 *status |= FE_HAS_LOCK; 1099 dprintk(state->verbose, FE_DEBUG, 1, 1100 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK"); 1101 1102 } 1103 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) { 1104 *status |= FE_HAS_VITERBI; 1105 dprintk(state->verbose, FE_DEBUG, 1, 1106 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI"); 1107 } 1108 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) { 1109 *status |= FE_HAS_SYNC; 1110 dprintk(state->verbose, FE_DEBUG, 1, 1111 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC"); 1112 /* post process event */ 1113 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1114 } 1115 } 1116 } 1117 break; 1118 default: 1119 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1120 return -EINVAL; 1121 } 1122 return 0; 1123 } 1124 1125 /* 1126 * stb0899_get_error 1127 * viterbi error for DVB-S/DSS 1128 * packet error for DVB-S2 1129 * Bit Error Rate or Packet Error Rate * 10 ^ 7 1130 */ 1131 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber) 1132 { 1133 struct stb0899_state *state = fe->demodulator_priv; 1134 struct stb0899_internal *internal = &state->internal; 1135 1136 u8 lsb, msb; 1137 1138 *ber = 0; 1139 1140 switch (state->delsys) { 1141 case SYS_DVBS: 1142 case SYS_DSS: 1143 if (internal->lock) { 1144 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1145 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1146 *ber = MAKEWORD16(msb, lsb); 1147 /* Viterbi Check */ 1148 if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) { 1149 /* Error Rate */ 1150 *ber *= 9766; 1151 /* ber = ber * 10 ^ 7 */ 1152 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1153 *ber /= 8; 1154 } 1155 } 1156 break; 1157 case SYS_DVBS2: 1158 if (internal->lock) { 1159 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1160 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1161 *ber = MAKEWORD16(msb, lsb); 1162 /* ber = ber * 10 ^ 7 */ 1163 *ber *= 10000000; 1164 *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1165 } 1166 break; 1167 default: 1168 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1169 return -EINVAL; 1170 } 1171 1172 return 0; 1173 } 1174 1175 static int stb0899_set_voltage(struct dvb_frontend *fe, 1176 enum fe_sec_voltage voltage) 1177 { 1178 struct stb0899_state *state = fe->demodulator_priv; 1179 1180 switch (voltage) { 1181 case SEC_VOLTAGE_13: 1182 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1183 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1184 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00); 1185 break; 1186 case SEC_VOLTAGE_18: 1187 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02); 1188 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1189 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1190 break; 1191 case SEC_VOLTAGE_OFF: 1192 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1193 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82); 1194 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1195 break; 1196 default: 1197 return -EINVAL; 1198 } 1199 1200 return 0; 1201 } 1202 1203 static int stb0899_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) 1204 { 1205 struct stb0899_state *state = fe->demodulator_priv; 1206 struct stb0899_internal *internal = &state->internal; 1207 1208 u8 div, reg; 1209 1210 /* wait for diseqc idle */ 1211 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 1212 return -ETIMEDOUT; 1213 1214 switch (tone) { 1215 case SEC_TONE_ON: 1216 div = (internal->master_clk / 100) / 5632; 1217 div = (div + 5) / 10; 1218 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66); 1219 reg = stb0899_read_reg(state, STB0899_ACRPRESC); 1220 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03); 1221 stb0899_write_reg(state, STB0899_ACRPRESC, reg); 1222 stb0899_write_reg(state, STB0899_ACRDIV1, div); 1223 break; 1224 case SEC_TONE_OFF: 1225 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20); 1226 break; 1227 default: 1228 return -EINVAL; 1229 } 1230 return 0; 1231 } 1232 1233 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 1234 { 1235 int i2c_stat; 1236 struct stb0899_state *state = fe->demodulator_priv; 1237 1238 i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT); 1239 if (i2c_stat < 0) 1240 goto err; 1241 1242 if (enable) { 1243 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ..."); 1244 i2c_stat |= STB0899_I2CTON; 1245 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1246 goto err; 1247 } else { 1248 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ..."); 1249 i2c_stat &= ~STB0899_I2CTON; 1250 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1251 goto err; 1252 } 1253 return 0; 1254 err: 1255 dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed"); 1256 return -EREMOTEIO; 1257 } 1258 1259 1260 static inline void CONVERT32(u32 x, char *str) 1261 { 1262 *str++ = (x >> 24) & 0xff; 1263 *str++ = (x >> 16) & 0xff; 1264 *str++ = (x >> 8) & 0xff; 1265 *str++ = (x >> 0) & 0xff; 1266 *str = '\0'; 1267 } 1268 1269 static int stb0899_get_dev_id(struct stb0899_state *state) 1270 { 1271 u8 chip_id, release; 1272 u16 id; 1273 u32 demod_ver = 0, fec_ver = 0; 1274 char demod_str[5] = { 0 }; 1275 char fec_str[5] = { 0 }; 1276 1277 id = stb0899_read_reg(state, STB0899_DEV_ID); 1278 dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id); 1279 chip_id = STB0899_GETFIELD(CHIP_ID, id); 1280 release = STB0899_GETFIELD(CHIP_REL, id); 1281 1282 dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]", 1283 chip_id, release); 1284 1285 CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str); 1286 1287 demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID); 1288 dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver); 1289 CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str); 1290 fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG); 1291 if (! (chip_id > 0)) { 1292 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899"); 1293 1294 return -ENODEV; 1295 } 1296 dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver); 1297 1298 return 0; 1299 } 1300 1301 static void stb0899_set_delivery(struct stb0899_state *state) 1302 { 1303 u8 reg; 1304 u8 stop_clk[2]; 1305 1306 stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1); 1307 stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2); 1308 1309 switch (state->delsys) { 1310 case SYS_DVBS: 1311 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S"); 1312 /* FECM/Viterbi ON */ 1313 reg = stb0899_read_reg(state, STB0899_FECM); 1314 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1315 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1316 stb0899_write_reg(state, STB0899_FECM, reg); 1317 1318 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1319 stb0899_write_reg(state, STB0899_TSULC, 0x40); 1320 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1321 stb0899_write_reg(state, STB0899_TSLPL, 0x12); 1322 1323 reg = stb0899_read_reg(state, STB0899_TSTRES); 1324 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1325 stb0899_write_reg(state, STB0899_TSTRES, reg); 1326 1327 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1328 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1329 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1330 1331 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1332 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1333 1334 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1); 1335 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1336 1337 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1338 break; 1339 case SYS_DVBS2: 1340 /* FECM/Viterbi OFF */ 1341 reg = stb0899_read_reg(state, STB0899_FECM); 1342 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1343 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0); 1344 stb0899_write_reg(state, STB0899_FECM, reg); 1345 1346 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1347 stb0899_write_reg(state, STB0899_TSULC, 0x42); 1348 stb0899_write_reg(state, STB0899_RSLLC, 0x40); 1349 stb0899_write_reg(state, STB0899_TSLPL, 0x02); 1350 1351 reg = stb0899_read_reg(state, STB0899_TSTRES); 1352 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0); 1353 stb0899_write_reg(state, STB0899_TSTRES, reg); 1354 1355 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1356 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0); 1357 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0); 1358 1359 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0); 1360 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0); 1361 1362 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0); 1363 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1364 1365 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0); 1366 break; 1367 case SYS_DSS: 1368 /* FECM/Viterbi ON */ 1369 reg = stb0899_read_reg(state, STB0899_FECM); 1370 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1); 1371 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1372 stb0899_write_reg(state, STB0899_FECM, reg); 1373 1374 stb0899_write_reg(state, STB0899_RSULC, 0xa1); 1375 stb0899_write_reg(state, STB0899_TSULC, 0x61); 1376 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1377 1378 reg = stb0899_read_reg(state, STB0899_TSTRES); 1379 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1380 stb0899_write_reg(state, STB0899_TSTRES, reg); 1381 1382 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1383 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1384 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1385 1386 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1387 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1388 1389 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1390 1391 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1392 break; 1393 default: 1394 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1395 break; 1396 } 1397 STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0); 1398 stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2); 1399 } 1400 1401 /* 1402 * stb0899_set_iterations 1403 * set the LDPC iteration scale function 1404 */ 1405 static void stb0899_set_iterations(struct stb0899_state *state) 1406 { 1407 struct stb0899_internal *internal = &state->internal; 1408 struct stb0899_config *config = state->config; 1409 1410 s32 iter_scale; 1411 u32 reg; 1412 1413 iter_scale = 17 * (internal->master_clk / 1000); 1414 iter_scale += 410000; 1415 iter_scale /= (internal->srate / 1000000); 1416 iter_scale /= 1000; 1417 1418 if (iter_scale > config->ldpc_max_iter) 1419 iter_scale = config->ldpc_max_iter; 1420 1421 reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER); 1422 STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale); 1423 stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg); 1424 } 1425 1426 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe) 1427 { 1428 struct stb0899_state *state = fe->demodulator_priv; 1429 struct stb0899_params *i_params = &state->params; 1430 struct stb0899_internal *internal = &state->internal; 1431 struct stb0899_config *config = state->config; 1432 struct dtv_frontend_properties *props = &fe->dtv_property_cache; 1433 1434 u32 SearchRange, gain; 1435 1436 i_params->freq = props->frequency; 1437 i_params->srate = props->symbol_rate; 1438 state->delsys = props->delivery_system; 1439 dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); 1440 1441 SearchRange = 10000000; 1442 dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); 1443 /* checking Search Range is meaningless for a fixed 3 Mhz */ 1444 if (INRANGE(i_params->srate, 1000000, 45000000)) { 1445 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE"); 1446 stb0899_set_delivery(state); 1447 1448 if (state->config->tuner_set_rfsiggain) { 1449 if (internal->srate > 15000000) 1450 gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */ 1451 else if (internal->srate > 5000000) 1452 gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */ 1453 else 1454 gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */ 1455 state->config->tuner_set_rfsiggain(fe, gain); 1456 } 1457 1458 if (i_params->srate <= 5000000) 1459 stb0899_set_mclk(state, config->lo_clk); 1460 else 1461 stb0899_set_mclk(state, config->hi_clk); 1462 1463 switch (state->delsys) { 1464 case SYS_DVBS: 1465 case SYS_DSS: 1466 dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system"); 1467 internal->freq = i_params->freq; 1468 internal->srate = i_params->srate; 1469 /* 1470 * search = user search range + 1471 * 500Khz + 1472 * 2 * Tuner_step_size + 1473 * 10% of the symbol rate 1474 */ 1475 internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5); 1476 internal->derot_percent = 30; 1477 1478 /* What to do for tuners having no bandwidth setup ? */ 1479 /* enable tuner I/O */ 1480 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1481 1482 if (state->config->tuner_set_bandwidth) 1483 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10); 1484 if (state->config->tuner_get_bandwidth) 1485 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1486 1487 /* disable tuner I/O */ 1488 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1489 1490 /* Set DVB-S1 AGC */ 1491 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11); 1492 1493 /* Run the search algorithm */ 1494 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo .."); 1495 if (stb0899_dvbs_algo(state) == RANGEOK) { 1496 internal->lock = 1; 1497 dprintk(state->verbose, FE_DEBUG, 1, 1498 "-------------------------------------> DVB-S LOCK !"); 1499 1500 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */ 1501 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1502 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1503 // dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status); 1504 // dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl); 1505 1506 return DVBFE_ALGO_SEARCH_SUCCESS; 1507 } else { 1508 internal->lock = 0; 1509 1510 return DVBFE_ALGO_SEARCH_FAILED; 1511 } 1512 break; 1513 case SYS_DVBS2: 1514 internal->freq = i_params->freq; 1515 internal->srate = i_params->srate; 1516 internal->srch_range = SearchRange; 1517 1518 /* enable tuner I/O */ 1519 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1520 1521 if (state->config->tuner_set_bandwidth) 1522 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange)); 1523 if (state->config->tuner_get_bandwidth) 1524 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1525 1526 /* disable tuner I/O */ 1527 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1528 1529 // pParams->SpectralInv = pSearch->IQ_Inversion; 1530 1531 /* Set DVB-S2 AGC */ 1532 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c); 1533 1534 /* Set IterScale =f(MCLK,SYMB) */ 1535 stb0899_set_iterations(state); 1536 1537 /* Run the search algorithm */ 1538 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo .."); 1539 if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) { 1540 internal->lock = 1; 1541 dprintk(state->verbose, FE_DEBUG, 1, 1542 "-------------------------------------> DVB-S2 LOCK !"); 1543 1544 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */ 1545 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1546 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1547 1548 return DVBFE_ALGO_SEARCH_SUCCESS; 1549 } else { 1550 internal->lock = 0; 1551 1552 return DVBFE_ALGO_SEARCH_FAILED; 1553 } 1554 break; 1555 default: 1556 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1557 return DVBFE_ALGO_SEARCH_INVALID; 1558 } 1559 } 1560 1561 return DVBFE_ALGO_SEARCH_ERROR; 1562 } 1563 1564 static int stb0899_get_frontend(struct dvb_frontend *fe, 1565 struct dtv_frontend_properties *p) 1566 { 1567 struct stb0899_state *state = fe->demodulator_priv; 1568 struct stb0899_internal *internal = &state->internal; 1569 1570 dprintk(state->verbose, FE_DEBUG, 1, "Get params"); 1571 p->symbol_rate = internal->srate; 1572 p->frequency = internal->freq; 1573 1574 return 0; 1575 } 1576 1577 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe) 1578 { 1579 return DVBFE_ALGO_CUSTOM; 1580 } 1581 1582 static const struct dvb_frontend_ops stb0899_ops = { 1583 .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS }, 1584 .info = { 1585 .name = "STB0899 Multistandard", 1586 .frequency_min = 950000, 1587 .frequency_max = 2150000, 1588 .frequency_stepsize = 0, 1589 .frequency_tolerance = 0, 1590 .symbol_rate_min = 5000000, 1591 .symbol_rate_max = 45000000, 1592 1593 .caps = FE_CAN_INVERSION_AUTO | 1594 FE_CAN_FEC_AUTO | 1595 FE_CAN_2G_MODULATION | 1596 FE_CAN_QPSK 1597 }, 1598 1599 .detach = stb0899_detach, 1600 .release = stb0899_release, 1601 .init = stb0899_init, 1602 .sleep = stb0899_sleep, 1603 // .wakeup = stb0899_wakeup, 1604 1605 .i2c_gate_ctrl = stb0899_i2c_gate_ctrl, 1606 1607 .get_frontend_algo = stb0899_frontend_algo, 1608 .search = stb0899_search, 1609 .get_frontend = stb0899_get_frontend, 1610 1611 1612 .read_status = stb0899_read_status, 1613 .read_snr = stb0899_read_snr, 1614 .read_signal_strength = stb0899_read_signal_strength, 1615 .read_ber = stb0899_read_ber, 1616 1617 .set_voltage = stb0899_set_voltage, 1618 .set_tone = stb0899_set_tone, 1619 1620 .diseqc_send_master_cmd = stb0899_send_diseqc_msg, 1621 .diseqc_recv_slave_reply = stb0899_recv_slave_reply, 1622 .diseqc_send_burst = stb0899_send_diseqc_burst, 1623 }; 1624 1625 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c) 1626 { 1627 struct stb0899_state *state = NULL; 1628 1629 state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL); 1630 if (state == NULL) 1631 goto error; 1632 1633 state->verbose = &verbose; 1634 state->config = config; 1635 state->i2c = i2c; 1636 state->frontend.ops = stb0899_ops; 1637 state->frontend.demodulator_priv = state; 1638 /* use configured inversion as default -- we'll later autodetect inversion */ 1639 state->internal.inversion = config->inversion; 1640 1641 stb0899_wakeup(&state->frontend); 1642 if (stb0899_get_dev_id(state) == -ENODEV) { 1643 printk("%s: Exiting .. !\n", __func__); 1644 goto error; 1645 } 1646 1647 printk("%s: Attaching STB0899 \n", __func__); 1648 return &state->frontend; 1649 1650 error: 1651 kfree(state); 1652 return NULL; 1653 } 1654 EXPORT_SYMBOL(stb0899_attach); 1655 MODULE_PARM_DESC(verbose, "Set Verbosity level"); 1656 MODULE_AUTHOR("Manu Abraham"); 1657 MODULE_DESCRIPTION("STB0899 Multi-Std frontend"); 1658 MODULE_LICENSE("GPL"); 1659