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 <media/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 u8 tmp = data; 543 return stb0899_write_regs(state, reg, &tmp, 1); 544 } 545 546 /* 547 * stb0899_get_mclk 548 * Get STB0899 master clock frequency 549 * ExtClk: external clock frequency (Hz) 550 */ 551 static u32 stb0899_get_mclk(struct stb0899_state *state) 552 { 553 u32 mclk = 0, div = 0; 554 555 div = stb0899_read_reg(state, STB0899_NCOARSE); 556 mclk = (div + 1) * state->config->xtal_freq / 6; 557 dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk); 558 559 return mclk; 560 } 561 562 /* 563 * stb0899_set_mclk 564 * Set STB0899 master Clock frequency 565 * Mclk: demodulator master clock 566 * ExtClk: external clock frequency (Hz) 567 */ 568 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk) 569 { 570 struct stb0899_internal *internal = &state->internal; 571 u8 mdiv = 0; 572 573 dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config); 574 mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1; 575 dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv); 576 577 stb0899_write_reg(state, STB0899_NCOARSE, mdiv); 578 internal->master_clk = stb0899_get_mclk(state); 579 580 dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk); 581 } 582 583 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable) 584 { 585 struct stb0899_config *config = state->config; 586 const struct stb0899_postproc *postproc = config->postproc; 587 588 /* post process event */ 589 if (postproc) { 590 if (enable) { 591 if (postproc[ctl].level == STB0899_GPIOPULLUP) 592 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 593 else 594 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 595 } else { 596 if (postproc[ctl].level == STB0899_GPIOPULLUP) 597 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 598 else 599 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 600 } 601 } 602 return 0; 603 } 604 605 static void stb0899_detach(struct dvb_frontend *fe) 606 { 607 struct stb0899_state *state = fe->demodulator_priv; 608 609 /* post process event */ 610 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 611 } 612 613 static void stb0899_release(struct dvb_frontend *fe) 614 { 615 struct stb0899_state *state = fe->demodulator_priv; 616 617 dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend"); 618 kfree(state); 619 } 620 621 /* 622 * stb0899_get_alpha 623 * return: rolloff 624 */ 625 static int stb0899_get_alpha(struct stb0899_state *state) 626 { 627 u8 mode_coeff; 628 629 mode_coeff = stb0899_read_reg(state, STB0899_DEMOD); 630 631 if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1) 632 return 20; 633 else 634 return 35; 635 } 636 637 /* 638 * stb0899_init_calc 639 */ 640 static void stb0899_init_calc(struct stb0899_state *state) 641 { 642 struct stb0899_internal *internal = &state->internal; 643 int master_clk; 644 u8 agc[2]; 645 u32 reg; 646 647 /* Read registers (in burst mode) */ 648 stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */ 649 650 /* Initial calculations */ 651 master_clk = stb0899_get_mclk(state); 652 internal->t_agc1 = 0; 653 internal->t_agc2 = 0; 654 internal->master_clk = master_clk; 655 internal->mclk = master_clk / 65536L; 656 internal->rolloff = stb0899_get_alpha(state); 657 658 /* DVBS2 Initial calculations */ 659 /* Set AGC value to the middle */ 660 internal->agc_gain = 8154; 661 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); 662 STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain); 663 stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); 664 665 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA); 666 internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg); 667 668 internal->center_freq = 0; 669 internal->av_frame_coarse = 10; 670 internal->av_frame_fine = 20; 671 internal->step_size = 2; 672 /* 673 if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO)) 674 pParams->IQLocked = 0; 675 else 676 pParams->IQLocked = 1; 677 */ 678 } 679 680 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout) 681 { 682 u8 reg = 0; 683 unsigned long start = jiffies; 684 685 while (1) { 686 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 687 if (!STB0899_GETFIELD(FIFOFULL, reg)) 688 break; 689 if (time_after(jiffies, start + timeout)) { 690 dprintk(state->verbose, FE_ERROR, 1, "timed out !!"); 691 return -ETIMEDOUT; 692 } 693 } 694 695 return 0; 696 } 697 698 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) 699 { 700 struct stb0899_state *state = fe->demodulator_priv; 701 u8 reg, i; 702 703 if (cmd->msg_len > sizeof(cmd->msg)) 704 return -EINVAL; 705 706 /* enable FIFO precharge */ 707 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 708 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1); 709 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 710 for (i = 0; i < cmd->msg_len; i++) { 711 /* wait for FIFO empty */ 712 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0) 713 return -ETIMEDOUT; 714 715 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]); 716 } 717 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 718 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0); 719 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 720 msleep(100); 721 return 0; 722 } 723 724 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout) 725 { 726 u8 reg = 0; 727 unsigned long start = jiffies; 728 729 while (!STB0899_GETFIELD(RXEND, reg)) { 730 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 731 if (time_after(jiffies, start + timeout)) { 732 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 733 return -ETIMEDOUT; 734 } 735 msleep(10); 736 } 737 738 return 0; 739 } 740 741 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply) 742 { 743 struct stb0899_state *state = fe->demodulator_priv; 744 u8 reg, length = 0, i; 745 int result; 746 747 if (stb0899_wait_diseqc_rxidle(state, 100) < 0) 748 return -ETIMEDOUT; 749 750 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 751 if (STB0899_GETFIELD(RXEND, reg)) { 752 753 reg = stb0899_read_reg(state, STB0899_DISRX_ST1); 754 length = STB0899_GETFIELD(FIFOBYTENBR, reg); 755 756 if (length > sizeof (reply->msg)) { 757 result = -EOVERFLOW; 758 goto exit; 759 } 760 reply->msg_len = length; 761 762 /* extract data */ 763 for (i = 0; i < length; i++) 764 reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO); 765 } 766 767 return 0; 768 exit: 769 770 return result; 771 } 772 773 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout) 774 { 775 u8 reg = 0; 776 unsigned long start = jiffies; 777 778 while (!STB0899_GETFIELD(TXIDLE, reg)) { 779 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 780 if (time_after(jiffies, start + timeout)) { 781 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 782 return -ETIMEDOUT; 783 } 784 msleep(10); 785 } 786 return 0; 787 } 788 789 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, 790 enum fe_sec_mini_cmd burst) 791 { 792 struct stb0899_state *state = fe->demodulator_priv; 793 u8 reg, old_state; 794 795 /* wait for diseqc idle */ 796 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 797 return -ETIMEDOUT; 798 799 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 800 old_state = reg; 801 /* set to burst mode */ 802 STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03); 803 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01); 804 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 805 switch (burst) { 806 case SEC_MINI_A: 807 /* unmodulated */ 808 stb0899_write_reg(state, STB0899_DISFIFO, 0x00); 809 break; 810 case SEC_MINI_B: 811 /* modulated */ 812 stb0899_write_reg(state, STB0899_DISFIFO, 0xff); 813 break; 814 } 815 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 816 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00); 817 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 818 /* wait for diseqc idle */ 819 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 820 return -ETIMEDOUT; 821 822 /* restore state */ 823 stb0899_write_reg(state, STB0899_DISCNTRL1, old_state); 824 825 return 0; 826 } 827 828 static int stb0899_diseqc_init(struct stb0899_state *state) 829 { 830 /* 831 struct dvb_diseqc_slave_reply rx_data; 832 */ 833 u8 f22_tx, reg; 834 835 u32 mclk, tx_freq = 22000;/* count = 0, i; */ 836 reg = stb0899_read_reg(state, STB0899_DISCNTRL2); 837 STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0); 838 stb0899_write_reg(state, STB0899_DISCNTRL2, reg); 839 840 /* disable Tx spy */ 841 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 842 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1); 843 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 844 845 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 846 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0); 847 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 848 849 mclk = stb0899_get_mclk(state); 850 f22_tx = mclk / (tx_freq * 32); 851 stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */ 852 state->rx_freq = 20000; 853 854 return 0; 855 } 856 857 static int stb0899_sleep(struct dvb_frontend *fe) 858 { 859 struct stb0899_state *state = fe->demodulator_priv; 860 /* 861 u8 reg; 862 */ 863 dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))"); 864 /* post process event */ 865 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 866 867 return 0; 868 } 869 870 static int stb0899_wakeup(struct dvb_frontend *fe) 871 { 872 int rc; 873 struct stb0899_state *state = fe->demodulator_priv; 874 875 if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI))) 876 return rc; 877 /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */ 878 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00))) 879 return rc; 880 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00))) 881 return rc; 882 883 /* post process event */ 884 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1); 885 886 return 0; 887 } 888 889 static int stb0899_init(struct dvb_frontend *fe) 890 { 891 int i; 892 struct stb0899_state *state = fe->demodulator_priv; 893 struct stb0899_config *config = state->config; 894 895 dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... "); 896 897 /* init device */ 898 dprintk(state->verbose, FE_DEBUG, 1, "init device"); 899 for (i = 0; config->init_dev[i].address != 0xffff; i++) 900 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data); 901 902 dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod"); 903 /* init S2 demod */ 904 for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++) 905 stb0899_write_s2reg(state, STB0899_S2DEMOD, 906 config->init_s2_demod[i].base_address, 907 config->init_s2_demod[i].offset, 908 config->init_s2_demod[i].data); 909 910 dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod"); 911 /* init S1 demod */ 912 for (i = 0; config->init_s1_demod[i].address != 0xffff; i++) 913 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data); 914 915 dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC"); 916 /* init S2 fec */ 917 for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++) 918 stb0899_write_s2reg(state, STB0899_S2FEC, 919 config->init_s2_fec[i].base_address, 920 config->init_s2_fec[i].offset, 921 config->init_s2_fec[i].data); 922 923 dprintk(state->verbose, FE_DEBUG, 1, "init TST"); 924 /* init test */ 925 for (i = 0; config->init_tst[i].address != 0xffff; i++) 926 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data); 927 928 stb0899_init_calc(state); 929 stb0899_diseqc_init(state); 930 931 return 0; 932 } 933 934 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val) 935 { 936 int res = 0; 937 int min = 0, med; 938 939 if (val < tab[min].read) 940 res = tab[min].real; 941 else if (val >= tab[max].read) 942 res = tab[max].real; 943 else { 944 while ((max - min) > 1) { 945 med = (max + min) / 2; 946 if (val >= tab[min].read && val < tab[med].read) 947 max = med; 948 else 949 min = med; 950 } 951 res = ((val - tab[min].read) * 952 (tab[max].real - tab[min].real) / 953 (tab[max].read - tab[min].read)) + 954 tab[min].real; 955 } 956 957 return res; 958 } 959 960 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 961 { 962 struct stb0899_state *state = fe->demodulator_priv; 963 struct stb0899_internal *internal = &state->internal; 964 965 int val; 966 u32 reg; 967 *strength = 0; 968 switch (state->delsys) { 969 case SYS_DVBS: 970 case SYS_DSS: 971 if (internal->lock) { 972 reg = stb0899_read_reg(state, STB0899_VSTATUS); 973 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 974 975 reg = stb0899_read_reg(state, STB0899_AGCIQIN); 976 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg); 977 978 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val); 979 *strength += 750; 980 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm", 981 val & 0xff, *strength); 982 } 983 } 984 break; 985 case SYS_DVBS2: 986 if (internal->lock) { 987 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN); 988 val = STB0899_GETFIELD(IF_AGC_GAIN, reg); 989 990 *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val); 991 *strength += 950; 992 dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm", 993 val & 0x3fff, *strength); 994 } 995 break; 996 default: 997 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 998 return -EINVAL; 999 } 1000 1001 return 0; 1002 } 1003 1004 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr) 1005 { 1006 struct stb0899_state *state = fe->demodulator_priv; 1007 struct stb0899_internal *internal = &state->internal; 1008 1009 unsigned int val, quant, quantn = -1, est, estn = -1; 1010 u8 buf[2]; 1011 u32 reg; 1012 1013 *snr = 0; 1014 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1015 switch (state->delsys) { 1016 case SYS_DVBS: 1017 case SYS_DSS: 1018 if (internal->lock) { 1019 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1020 1021 stb0899_read_regs(state, STB0899_NIRM, buf, 2); 1022 val = MAKEWORD16(buf[0], buf[1]); 1023 1024 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val); 1025 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n", 1026 buf[0], buf[1], val, *snr); 1027 } 1028 } 1029 break; 1030 case SYS_DVBS2: 1031 if (internal->lock) { 1032 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); 1033 quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg); 1034 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); 1035 est = STB0899_GETFIELD(ESN0_EST, reg); 1036 if (est == 1) 1037 val = 301; /* C/N = 30.1 dB */ 1038 else if (est == 2) 1039 val = 270; /* C/N = 27.0 dB */ 1040 else { 1041 /* quantn = 100 * log(quant^2) */ 1042 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100); 1043 /* estn = 100 * log(est) */ 1044 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est); 1045 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */ 1046 val = (quantn - estn) / 10; 1047 } 1048 *snr = val; 1049 dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm", 1050 quant, quantn, est, estn, val); 1051 } 1052 break; 1053 default: 1054 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1055 return -EINVAL; 1056 } 1057 1058 return 0; 1059 } 1060 1061 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status) 1062 { 1063 struct stb0899_state *state = fe->demodulator_priv; 1064 struct stb0899_internal *internal = &state->internal; 1065 u8 reg; 1066 *status = 0; 1067 1068 switch (state->delsys) { 1069 case SYS_DVBS: 1070 case SYS_DSS: 1071 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS"); 1072 if (internal->lock) { 1073 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1074 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1075 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK"); 1076 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; 1077 1078 reg = stb0899_read_reg(state, STB0899_PLPARM); 1079 if (STB0899_GETFIELD(VITCURPUN, reg)) { 1080 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC"); 1081 *status |= FE_HAS_VITERBI | FE_HAS_SYNC; 1082 /* post process event */ 1083 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1084 } 1085 } 1086 } 1087 break; 1088 case SYS_DVBS2: 1089 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2"); 1090 if (internal->lock) { 1091 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); 1092 if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) { 1093 *status |= FE_HAS_CARRIER; 1094 dprintk(state->verbose, FE_DEBUG, 1, 1095 "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER"); 1096 1097 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); 1098 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) { 1099 *status |= FE_HAS_LOCK; 1100 dprintk(state->verbose, FE_DEBUG, 1, 1101 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK"); 1102 1103 } 1104 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) { 1105 *status |= FE_HAS_VITERBI; 1106 dprintk(state->verbose, FE_DEBUG, 1, 1107 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI"); 1108 } 1109 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) { 1110 *status |= FE_HAS_SYNC; 1111 dprintk(state->verbose, FE_DEBUG, 1, 1112 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC"); 1113 /* post process event */ 1114 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1115 } 1116 } 1117 } 1118 break; 1119 default: 1120 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1121 return -EINVAL; 1122 } 1123 return 0; 1124 } 1125 1126 /* 1127 * stb0899_get_error 1128 * viterbi error for DVB-S/DSS 1129 * packet error for DVB-S2 1130 * Bit Error Rate or Packet Error Rate * 10 ^ 7 1131 */ 1132 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber) 1133 { 1134 struct stb0899_state *state = fe->demodulator_priv; 1135 struct stb0899_internal *internal = &state->internal; 1136 1137 u8 lsb, msb; 1138 1139 *ber = 0; 1140 1141 switch (state->delsys) { 1142 case SYS_DVBS: 1143 case SYS_DSS: 1144 if (internal->lock) { 1145 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1146 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1147 *ber = MAKEWORD16(msb, lsb); 1148 /* Viterbi Check */ 1149 if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) { 1150 /* Error Rate */ 1151 *ber *= 9766; 1152 /* ber = ber * 10 ^ 7 */ 1153 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1154 *ber /= 8; 1155 } 1156 } 1157 break; 1158 case SYS_DVBS2: 1159 if (internal->lock) { 1160 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1161 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1162 *ber = MAKEWORD16(msb, lsb); 1163 /* ber = ber * 10 ^ 7 */ 1164 *ber *= 10000000; 1165 *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1166 } 1167 break; 1168 default: 1169 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1170 return -EINVAL; 1171 } 1172 1173 return 0; 1174 } 1175 1176 static int stb0899_set_voltage(struct dvb_frontend *fe, 1177 enum fe_sec_voltage voltage) 1178 { 1179 struct stb0899_state *state = fe->demodulator_priv; 1180 1181 switch (voltage) { 1182 case SEC_VOLTAGE_13: 1183 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1184 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1185 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00); 1186 break; 1187 case SEC_VOLTAGE_18: 1188 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02); 1189 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1190 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1191 break; 1192 case SEC_VOLTAGE_OFF: 1193 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1194 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82); 1195 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1196 break; 1197 default: 1198 return -EINVAL; 1199 } 1200 1201 return 0; 1202 } 1203 1204 static int stb0899_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) 1205 { 1206 struct stb0899_state *state = fe->demodulator_priv; 1207 struct stb0899_internal *internal = &state->internal; 1208 1209 u8 div, reg; 1210 1211 /* wait for diseqc idle */ 1212 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 1213 return -ETIMEDOUT; 1214 1215 switch (tone) { 1216 case SEC_TONE_ON: 1217 div = (internal->master_clk / 100) / 5632; 1218 div = (div + 5) / 10; 1219 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66); 1220 reg = stb0899_read_reg(state, STB0899_ACRPRESC); 1221 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03); 1222 stb0899_write_reg(state, STB0899_ACRPRESC, reg); 1223 stb0899_write_reg(state, STB0899_ACRDIV1, div); 1224 break; 1225 case SEC_TONE_OFF: 1226 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20); 1227 break; 1228 default: 1229 return -EINVAL; 1230 } 1231 return 0; 1232 } 1233 1234 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 1235 { 1236 int i2c_stat; 1237 struct stb0899_state *state = fe->demodulator_priv; 1238 1239 i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT); 1240 if (i2c_stat < 0) 1241 goto err; 1242 1243 if (enable) { 1244 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ..."); 1245 i2c_stat |= STB0899_I2CTON; 1246 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1247 goto err; 1248 } else { 1249 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ..."); 1250 i2c_stat &= ~STB0899_I2CTON; 1251 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1252 goto err; 1253 } 1254 return 0; 1255 err: 1256 dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed"); 1257 return -EREMOTEIO; 1258 } 1259 1260 1261 static inline void CONVERT32(u32 x, char *str) 1262 { 1263 *str++ = (x >> 24) & 0xff; 1264 *str++ = (x >> 16) & 0xff; 1265 *str++ = (x >> 8) & 0xff; 1266 *str++ = (x >> 0) & 0xff; 1267 *str = '\0'; 1268 } 1269 1270 static int stb0899_get_dev_id(struct stb0899_state *state) 1271 { 1272 u8 chip_id, release; 1273 u16 id; 1274 u32 demod_ver = 0, fec_ver = 0; 1275 char demod_str[5] = { 0 }; 1276 char fec_str[5] = { 0 }; 1277 1278 id = stb0899_read_reg(state, STB0899_DEV_ID); 1279 dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id); 1280 chip_id = STB0899_GETFIELD(CHIP_ID, id); 1281 release = STB0899_GETFIELD(CHIP_REL, id); 1282 1283 dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]", 1284 chip_id, release); 1285 1286 CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str); 1287 1288 demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID); 1289 dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver); 1290 CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str); 1291 fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG); 1292 if (! (chip_id > 0)) { 1293 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899"); 1294 1295 return -ENODEV; 1296 } 1297 dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver); 1298 1299 return 0; 1300 } 1301 1302 static void stb0899_set_delivery(struct stb0899_state *state) 1303 { 1304 u8 reg; 1305 u8 stop_clk[2]; 1306 1307 stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1); 1308 stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2); 1309 1310 switch (state->delsys) { 1311 case SYS_DVBS: 1312 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S"); 1313 /* FECM/Viterbi ON */ 1314 reg = stb0899_read_reg(state, STB0899_FECM); 1315 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1316 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1317 stb0899_write_reg(state, STB0899_FECM, reg); 1318 1319 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1320 stb0899_write_reg(state, STB0899_TSULC, 0x40); 1321 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1322 stb0899_write_reg(state, STB0899_TSLPL, 0x12); 1323 1324 reg = stb0899_read_reg(state, STB0899_TSTRES); 1325 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1326 stb0899_write_reg(state, STB0899_TSTRES, reg); 1327 1328 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1329 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1330 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1331 1332 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1333 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1334 1335 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1); 1336 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1337 1338 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1339 break; 1340 case SYS_DVBS2: 1341 /* FECM/Viterbi OFF */ 1342 reg = stb0899_read_reg(state, STB0899_FECM); 1343 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1344 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0); 1345 stb0899_write_reg(state, STB0899_FECM, reg); 1346 1347 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1348 stb0899_write_reg(state, STB0899_TSULC, 0x42); 1349 stb0899_write_reg(state, STB0899_RSLLC, 0x40); 1350 stb0899_write_reg(state, STB0899_TSLPL, 0x02); 1351 1352 reg = stb0899_read_reg(state, STB0899_TSTRES); 1353 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0); 1354 stb0899_write_reg(state, STB0899_TSTRES, reg); 1355 1356 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1357 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0); 1358 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0); 1359 1360 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0); 1361 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0); 1362 1363 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0); 1364 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1365 1366 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0); 1367 break; 1368 case SYS_DSS: 1369 /* FECM/Viterbi ON */ 1370 reg = stb0899_read_reg(state, STB0899_FECM); 1371 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1); 1372 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1373 stb0899_write_reg(state, STB0899_FECM, reg); 1374 1375 stb0899_write_reg(state, STB0899_RSULC, 0xa1); 1376 stb0899_write_reg(state, STB0899_TSULC, 0x61); 1377 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1378 1379 reg = stb0899_read_reg(state, STB0899_TSTRES); 1380 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1381 stb0899_write_reg(state, STB0899_TSTRES, reg); 1382 1383 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1384 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1385 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1386 1387 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1388 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1389 1390 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1391 1392 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1393 break; 1394 default: 1395 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1396 break; 1397 } 1398 STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0); 1399 stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2); 1400 } 1401 1402 /* 1403 * stb0899_set_iterations 1404 * set the LDPC iteration scale function 1405 */ 1406 static void stb0899_set_iterations(struct stb0899_state *state) 1407 { 1408 struct stb0899_internal *internal = &state->internal; 1409 struct stb0899_config *config = state->config; 1410 1411 s32 iter_scale; 1412 u32 reg; 1413 1414 iter_scale = 17 * (internal->master_clk / 1000); 1415 iter_scale += 410000; 1416 iter_scale /= (internal->srate / 1000000); 1417 iter_scale /= 1000; 1418 1419 if (iter_scale > config->ldpc_max_iter) 1420 iter_scale = config->ldpc_max_iter; 1421 1422 reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER); 1423 STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale); 1424 stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg); 1425 } 1426 1427 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe) 1428 { 1429 struct stb0899_state *state = fe->demodulator_priv; 1430 struct stb0899_params *i_params = &state->params; 1431 struct stb0899_internal *internal = &state->internal; 1432 struct stb0899_config *config = state->config; 1433 struct dtv_frontend_properties *props = &fe->dtv_property_cache; 1434 1435 u32 SearchRange, gain; 1436 1437 i_params->freq = props->frequency; 1438 i_params->srate = props->symbol_rate; 1439 state->delsys = props->delivery_system; 1440 dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); 1441 1442 SearchRange = 10000000; 1443 dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); 1444 /* checking Search Range is meaningless for a fixed 3 Mhz */ 1445 if (INRANGE(i_params->srate, 1000000, 45000000)) { 1446 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE"); 1447 stb0899_set_delivery(state); 1448 1449 if (state->config->tuner_set_rfsiggain) { 1450 if (internal->srate > 15000000) 1451 gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */ 1452 else if (internal->srate > 5000000) 1453 gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */ 1454 else 1455 gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */ 1456 state->config->tuner_set_rfsiggain(fe, gain); 1457 } 1458 1459 if (i_params->srate <= 5000000) 1460 stb0899_set_mclk(state, config->lo_clk); 1461 else 1462 stb0899_set_mclk(state, config->hi_clk); 1463 1464 switch (state->delsys) { 1465 case SYS_DVBS: 1466 case SYS_DSS: 1467 dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system"); 1468 internal->freq = i_params->freq; 1469 internal->srate = i_params->srate; 1470 /* 1471 * search = user search range + 1472 * 500Khz + 1473 * 2 * Tuner_step_size + 1474 * 10% of the symbol rate 1475 */ 1476 internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5); 1477 internal->derot_percent = 30; 1478 1479 /* What to do for tuners having no bandwidth setup ? */ 1480 /* enable tuner I/O */ 1481 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1482 1483 if (state->config->tuner_set_bandwidth) 1484 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10); 1485 if (state->config->tuner_get_bandwidth) 1486 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1487 1488 /* disable tuner I/O */ 1489 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1490 1491 /* Set DVB-S1 AGC */ 1492 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11); 1493 1494 /* Run the search algorithm */ 1495 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo .."); 1496 if (stb0899_dvbs_algo(state) == RANGEOK) { 1497 internal->lock = 1; 1498 dprintk(state->verbose, FE_DEBUG, 1, 1499 "-------------------------------------> DVB-S LOCK !"); 1500 1501 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */ 1502 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1503 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1504 // dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status); 1505 // dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl); 1506 1507 return DVBFE_ALGO_SEARCH_SUCCESS; 1508 } else { 1509 internal->lock = 0; 1510 1511 return DVBFE_ALGO_SEARCH_FAILED; 1512 } 1513 break; 1514 case SYS_DVBS2: 1515 internal->freq = i_params->freq; 1516 internal->srate = i_params->srate; 1517 internal->srch_range = SearchRange; 1518 1519 /* enable tuner I/O */ 1520 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1521 1522 if (state->config->tuner_set_bandwidth) 1523 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange)); 1524 if (state->config->tuner_get_bandwidth) 1525 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1526 1527 /* disable tuner I/O */ 1528 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1529 1530 // pParams->SpectralInv = pSearch->IQ_Inversion; 1531 1532 /* Set DVB-S2 AGC */ 1533 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c); 1534 1535 /* Set IterScale =f(MCLK,SYMB) */ 1536 stb0899_set_iterations(state); 1537 1538 /* Run the search algorithm */ 1539 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo .."); 1540 if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) { 1541 internal->lock = 1; 1542 dprintk(state->verbose, FE_DEBUG, 1, 1543 "-------------------------------------> DVB-S2 LOCK !"); 1544 1545 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */ 1546 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1547 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1548 1549 return DVBFE_ALGO_SEARCH_SUCCESS; 1550 } else { 1551 internal->lock = 0; 1552 1553 return DVBFE_ALGO_SEARCH_FAILED; 1554 } 1555 break; 1556 default: 1557 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1558 return DVBFE_ALGO_SEARCH_INVALID; 1559 } 1560 } 1561 1562 return DVBFE_ALGO_SEARCH_ERROR; 1563 } 1564 1565 static int stb0899_get_frontend(struct dvb_frontend *fe, 1566 struct dtv_frontend_properties *p) 1567 { 1568 struct stb0899_state *state = fe->demodulator_priv; 1569 struct stb0899_internal *internal = &state->internal; 1570 1571 dprintk(state->verbose, FE_DEBUG, 1, "Get params"); 1572 p->symbol_rate = internal->srate; 1573 p->frequency = internal->freq; 1574 1575 return 0; 1576 } 1577 1578 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe) 1579 { 1580 return DVBFE_ALGO_CUSTOM; 1581 } 1582 1583 static const struct dvb_frontend_ops stb0899_ops = { 1584 .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS }, 1585 .info = { 1586 .name = "STB0899 Multistandard", 1587 .frequency_min = 950000, 1588 .frequency_max = 2150000, 1589 .frequency_stepsize = 0, 1590 .frequency_tolerance = 0, 1591 .symbol_rate_min = 5000000, 1592 .symbol_rate_max = 45000000, 1593 1594 .caps = FE_CAN_INVERSION_AUTO | 1595 FE_CAN_FEC_AUTO | 1596 FE_CAN_2G_MODULATION | 1597 FE_CAN_QPSK 1598 }, 1599 1600 .detach = stb0899_detach, 1601 .release = stb0899_release, 1602 .init = stb0899_init, 1603 .sleep = stb0899_sleep, 1604 // .wakeup = stb0899_wakeup, 1605 1606 .i2c_gate_ctrl = stb0899_i2c_gate_ctrl, 1607 1608 .get_frontend_algo = stb0899_frontend_algo, 1609 .search = stb0899_search, 1610 .get_frontend = stb0899_get_frontend, 1611 1612 1613 .read_status = stb0899_read_status, 1614 .read_snr = stb0899_read_snr, 1615 .read_signal_strength = stb0899_read_signal_strength, 1616 .read_ber = stb0899_read_ber, 1617 1618 .set_voltage = stb0899_set_voltage, 1619 .set_tone = stb0899_set_tone, 1620 1621 .diseqc_send_master_cmd = stb0899_send_diseqc_msg, 1622 .diseqc_recv_slave_reply = stb0899_recv_slave_reply, 1623 .diseqc_send_burst = stb0899_send_diseqc_burst, 1624 }; 1625 1626 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c) 1627 { 1628 struct stb0899_state *state = NULL; 1629 1630 state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL); 1631 if (state == NULL) 1632 goto error; 1633 1634 state->verbose = &verbose; 1635 state->config = config; 1636 state->i2c = i2c; 1637 state->frontend.ops = stb0899_ops; 1638 state->frontend.demodulator_priv = state; 1639 /* use configured inversion as default -- we'll later autodetect inversion */ 1640 state->internal.inversion = config->inversion; 1641 1642 stb0899_wakeup(&state->frontend); 1643 if (stb0899_get_dev_id(state) == -ENODEV) { 1644 printk("%s: Exiting .. !\n", __func__); 1645 goto error; 1646 } 1647 1648 printk("%s: Attaching STB0899 \n", __func__); 1649 return &state->frontend; 1650 1651 error: 1652 kfree(state); 1653 return NULL; 1654 } 1655 EXPORT_SYMBOL(stb0899_attach); 1656 MODULE_PARM_DESC(verbose, "Set Verbosity level"); 1657 MODULE_AUTHOR("Manu Abraham"); 1658 MODULE_DESCRIPTION("STB0899 Multi-Std frontend"); 1659 MODULE_LICENSE("GPL"); 1660