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/kernel.h> 24 #include <linux/module.h> 25 #include <linux/slab.h> 26 #include <linux/string.h> 27 28 #include <linux/dvb/frontend.h> 29 #include "dvb_frontend.h" 30 31 #include "stb0899_drv.h" 32 #include "stb0899_priv.h" 33 #include "stb0899_reg.h" 34 35 /* Max transfer size done by I2C transfer functions */ 36 #define MAX_XFER_SIZE 64 37 38 static unsigned int verbose = 0;//1; 39 module_param(verbose, int, 0644); 40 41 /* C/N in dB/10, NIRM/NIRL */ 42 static const struct stb0899_tab stb0899_cn_tab[] = { 43 { 200, 2600 }, 44 { 190, 2700 }, 45 { 180, 2860 }, 46 { 170, 3020 }, 47 { 160, 3210 }, 48 { 150, 3440 }, 49 { 140, 3710 }, 50 { 130, 4010 }, 51 { 120, 4360 }, 52 { 110, 4740 }, 53 { 100, 5190 }, 54 { 90, 5670 }, 55 { 80, 6200 }, 56 { 70, 6770 }, 57 { 60, 7360 }, 58 { 50, 7970 }, 59 { 40, 8250 }, 60 { 30, 9000 }, 61 { 20, 9450 }, 62 { 15, 9600 }, 63 }; 64 65 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10. 66 * As measured, connected to a modulator. 67 * -8.0 to -50.0 dBm directly connected, 68 * -52.0 to -74.8 with extra attenuation. 69 * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm. 70 * Crude linear extrapolation below -84.8dBm and above -8.0dBm. 71 */ 72 static const struct stb0899_tab stb0899_dvbsrf_tab[] = { 73 { -750, -128 }, 74 { -748, -94 }, 75 { -745, -92 }, 76 { -735, -90 }, 77 { -720, -87 }, 78 { -670, -77 }, 79 { -640, -70 }, 80 { -610, -62 }, 81 { -600, -60 }, 82 { -590, -56 }, 83 { -560, -41 }, 84 { -540, -25 }, 85 { -530, -17 }, 86 { -520, -11 }, 87 { -500, 1 }, 88 { -490, 6 }, 89 { -480, 10 }, 90 { -440, 22 }, 91 { -420, 27 }, 92 { -400, 31 }, 93 { -380, 34 }, 94 { -340, 40 }, 95 { -320, 43 }, 96 { -280, 48 }, 97 { -250, 52 }, 98 { -230, 55 }, 99 { -180, 61 }, 100 { -140, 66 }, 101 { -90, 73 }, 102 { -80, 74 }, 103 { 500, 127 } 104 }; 105 106 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10. 107 * As measured, connected to a modulator. 108 * -8.0 to -50.1 dBm directly connected, 109 * -53.0 to -76.6 with extra attenuation. 110 * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm. 111 * Crude linear extrapolation below -76.6dBm and above -8.0dBm. 112 */ 113 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = { 114 { 700, 0 }, 115 { -80, 3217 }, 116 { -150, 3893 }, 117 { -190, 4217 }, 118 { -240, 4621 }, 119 { -280, 4945 }, 120 { -320, 5273 }, 121 { -350, 5545 }, 122 { -370, 5741 }, 123 { -410, 6147 }, 124 { -450, 6671 }, 125 { -490, 7413 }, 126 { -501, 7665 }, 127 { -530, 8767 }, 128 { -560, 10219 }, 129 { -580, 10939 }, 130 { -590, 11518 }, 131 { -600, 11723 }, 132 { -650, 12659 }, 133 { -690, 13219 }, 134 { -730, 13645 }, 135 { -750, 13909 }, 136 { -766, 14153 }, 137 { -950, 16383 } 138 }; 139 140 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/ 141 static struct stb0899_tab stb0899_quant_tab[] = { 142 { 0, 0 }, 143 { 0, 100 }, 144 { 600, 200 }, 145 { 950, 299 }, 146 { 1200, 398 }, 147 { 1400, 501 }, 148 { 1560, 603 }, 149 { 1690, 700 }, 150 { 1810, 804 }, 151 { 1910, 902 }, 152 { 2000, 1000 }, 153 { 2080, 1096 }, 154 { 2160, 1202 }, 155 { 2230, 1303 }, 156 { 2350, 1496 }, 157 { 2410, 1603 }, 158 { 2460, 1698 }, 159 { 2510, 1799 }, 160 { 2600, 1995 }, 161 { 2650, 2113 }, 162 { 2690, 2213 }, 163 { 2720, 2291 }, 164 { 2760, 2399 }, 165 { 2800, 2512 }, 166 { 2860, 2692 }, 167 { 2930, 2917 }, 168 { 2960, 3020 }, 169 { 3010, 3199 }, 170 { 3040, 3311 }, 171 { 3060, 3388 }, 172 { 3120, 3631 }, 173 { 3190, 3936 }, 174 { 3400, 5012 }, 175 { 3610, 6383 }, 176 { 3800, 7943 }, 177 { 4210, 12735 }, 178 { 4500, 17783 }, 179 { 4690, 22131 }, 180 { 4810, 25410 } 181 }; 182 183 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */ 184 static struct stb0899_tab stb0899_est_tab[] = { 185 { 0, 0 }, 186 { 0, 1 }, 187 { 301, 2 }, 188 { 1204, 16 }, 189 { 1806, 64 }, 190 { 2408, 256 }, 191 { 2709, 512 }, 192 { 3010, 1023 }, 193 { 3311, 2046 }, 194 { 3612, 4093 }, 195 { 3823, 6653 }, 196 { 3913, 8185 }, 197 { 4010, 10233 }, 198 { 4107, 12794 }, 199 { 4214, 16368 }, 200 { 4266, 18450 }, 201 { 4311, 20464 }, 202 { 4353, 22542 }, 203 { 4391, 24604 }, 204 { 4425, 26607 }, 205 { 4457, 28642 }, 206 { 4487, 30690 }, 207 { 4515, 32734 }, 208 { 4612, 40926 }, 209 { 4692, 49204 }, 210 { 4816, 65464 }, 211 { 4913, 81846 }, 212 { 4993, 98401 }, 213 { 5060, 114815 }, 214 { 5118, 131220 }, 215 { 5200, 158489 }, 216 { 5300, 199526 }, 217 { 5400, 251189 }, 218 { 5500, 316228 }, 219 { 5600, 398107 }, 220 { 5720, 524807 }, 221 { 5721, 526017 }, 222 }; 223 224 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 225 { 226 int ret; 227 228 u8 b0[] = { reg >> 8, reg & 0xff }; 229 u8 buf; 230 231 struct i2c_msg msg[] = { 232 { 233 .addr = state->config->demod_address, 234 .flags = 0, 235 .buf = b0, 236 .len = 2 237 },{ 238 .addr = state->config->demod_address, 239 .flags = I2C_M_RD, 240 .buf = &buf, 241 .len = 1 242 } 243 }; 244 245 ret = i2c_transfer(state->i2c, msg, 2); 246 if (ret != 2) { 247 if (ret != -ERESTARTSYS) 248 dprintk(state->verbose, FE_ERROR, 1, 249 "Read error, Reg=[0x%02x], Status=%d", 250 reg, ret); 251 252 return ret < 0 ? ret : -EREMOTEIO; 253 } 254 if (unlikely(*state->verbose >= FE_DEBUGREG)) 255 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x", 256 reg, buf); 257 258 return (unsigned int)buf; 259 } 260 261 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 262 { 263 int result; 264 265 result = _stb0899_read_reg(state, reg); 266 /* 267 * Bug ID 9: 268 * access to 0xf2xx/0xf6xx 269 * must be followed by read from 0xf2ff/0xf6ff. 270 */ 271 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 272 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 273 _stb0899_read_reg(state, (reg | 0x00ff)); 274 275 return result; 276 } 277 278 u32 _stb0899_read_s2reg(struct stb0899_state *state, 279 u32 stb0899_i2cdev, 280 u32 stb0899_base_addr, 281 u16 stb0899_reg_offset) 282 { 283 int status; 284 u32 data; 285 u8 buf[7] = { 0 }; 286 u16 tmpaddr; 287 288 u8 buf_0[] = { 289 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 290 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 291 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 292 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 293 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 294 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 295 }; 296 u8 buf_1[] = { 297 0x00, /* 0xf3 Reg Offset */ 298 0x00, /* 0x44 Reg Offset */ 299 }; 300 301 struct i2c_msg msg_0 = { 302 .addr = state->config->demod_address, 303 .flags = 0, 304 .buf = buf_0, 305 .len = 6 306 }; 307 308 struct i2c_msg msg_1 = { 309 .addr = state->config->demod_address, 310 .flags = 0, 311 .buf = buf_1, 312 .len = 2 313 }; 314 315 struct i2c_msg msg_r = { 316 .addr = state->config->demod_address, 317 .flags = I2C_M_RD, 318 .buf = buf, 319 .len = 4 320 }; 321 322 tmpaddr = stb0899_reg_offset & 0xff00; 323 if (!(stb0899_reg_offset & 0x8)) 324 tmpaddr = stb0899_reg_offset | 0x20; 325 326 buf_1[0] = GETBYTE(tmpaddr, BYTE1); 327 buf_1[1] = GETBYTE(tmpaddr, BYTE0); 328 329 status = i2c_transfer(state->i2c, &msg_0, 1); 330 if (status < 1) { 331 if (status != -ERESTARTSYS) 332 printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 333 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 334 335 goto err; 336 } 337 338 /* Dummy */ 339 status = i2c_transfer(state->i2c, &msg_1, 1); 340 if (status < 1) 341 goto err; 342 343 status = i2c_transfer(state->i2c, &msg_r, 1); 344 if (status < 1) 345 goto err; 346 347 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 348 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 349 350 /* Actual */ 351 status = i2c_transfer(state->i2c, &msg_1, 1); 352 if (status < 1) { 353 if (status != -ERESTARTSYS) 354 printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 355 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 356 goto err; 357 } 358 359 status = i2c_transfer(state->i2c, &msg_r, 1); 360 if (status < 1) { 361 if (status != -ERESTARTSYS) 362 printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 363 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 364 return status < 0 ? status : -EREMOTEIO; 365 } 366 367 data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]); 368 if (unlikely(*state->verbose >= FE_DEBUGREG)) 369 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 370 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data); 371 372 return data; 373 374 err: 375 return status < 0 ? status : -EREMOTEIO; 376 } 377 378 int stb0899_write_s2reg(struct stb0899_state *state, 379 u32 stb0899_i2cdev, 380 u32 stb0899_base_addr, 381 u16 stb0899_reg_offset, 382 u32 stb0899_data) 383 { 384 int status; 385 386 /* Base Address Setup */ 387 u8 buf_0[] = { 388 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 389 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 390 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 391 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 392 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 393 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 394 }; 395 u8 buf_1[] = { 396 0x00, /* 0xf3 Reg Offset */ 397 0x00, /* 0x44 Reg Offset */ 398 0x00, /* data */ 399 0x00, /* data */ 400 0x00, /* data */ 401 0x00, /* data */ 402 }; 403 404 struct i2c_msg msg_0 = { 405 .addr = state->config->demod_address, 406 .flags = 0, 407 .buf = buf_0, 408 .len = 6 409 }; 410 411 struct i2c_msg msg_1 = { 412 .addr = state->config->demod_address, 413 .flags = 0, 414 .buf = buf_1, 415 .len = 6 416 }; 417 418 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 419 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 420 buf_1[2] = GETBYTE(stb0899_data, BYTE0); 421 buf_1[3] = GETBYTE(stb0899_data, BYTE1); 422 buf_1[4] = GETBYTE(stb0899_data, BYTE2); 423 buf_1[5] = GETBYTE(stb0899_data, BYTE3); 424 425 if (unlikely(*state->verbose >= FE_DEBUGREG)) 426 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 427 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data); 428 429 status = i2c_transfer(state->i2c, &msg_0, 1); 430 if (unlikely(status < 1)) { 431 if (status != -ERESTARTSYS) 432 printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 433 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 434 goto err; 435 } 436 status = i2c_transfer(state->i2c, &msg_1, 1); 437 if (unlikely(status < 1)) { 438 if (status != -ERESTARTSYS) 439 printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 440 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 441 442 return status < 0 ? status : -EREMOTEIO; 443 } 444 445 return 0; 446 447 err: 448 return status < 0 ? status : -EREMOTEIO; 449 } 450 451 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count) 452 { 453 int status; 454 455 u8 b0[] = { reg >> 8, reg & 0xff }; 456 457 struct i2c_msg msg[] = { 458 { 459 .addr = state->config->demod_address, 460 .flags = 0, 461 .buf = b0, 462 .len = 2 463 },{ 464 .addr = state->config->demod_address, 465 .flags = I2C_M_RD, 466 .buf = buf, 467 .len = count 468 } 469 }; 470 471 status = i2c_transfer(state->i2c, msg, 2); 472 if (status != 2) { 473 if (status != -ERESTARTSYS) 474 printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n", 475 __func__, reg, count, status); 476 goto err; 477 } 478 /* 479 * Bug ID 9: 480 * access to 0xf2xx/0xf6xx 481 * must be followed by read from 0xf2ff/0xf6ff. 482 */ 483 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 484 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 485 _stb0899_read_reg(state, (reg | 0x00ff)); 486 487 if (unlikely(*state->verbose >= FE_DEBUGREG)) { 488 int i; 489 490 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); 491 for (i = 0; i < count; i++) { 492 printk(" %02x", buf[i]); 493 } 494 printk("\n"); 495 } 496 497 return 0; 498 err: 499 return status < 0 ? status : -EREMOTEIO; 500 } 501 502 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count) 503 { 504 int ret; 505 u8 buf[MAX_XFER_SIZE]; 506 struct i2c_msg i2c_msg = { 507 .addr = state->config->demod_address, 508 .flags = 0, 509 .buf = buf, 510 .len = 2 + count 511 }; 512 513 if (2 + count > sizeof(buf)) { 514 printk(KERN_WARNING 515 "%s: i2c wr reg=%04x: len=%d is too big!\n", 516 KBUILD_MODNAME, reg, count); 517 return -EINVAL; 518 } 519 520 buf[0] = reg >> 8; 521 buf[1] = reg & 0xff; 522 memcpy(&buf[2], data, count); 523 524 if (unlikely(*state->verbose >= FE_DEBUGREG)) { 525 int i; 526 527 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); 528 for (i = 0; i < count; i++) 529 printk(" %02x", data[i]); 530 printk("\n"); 531 } 532 ret = i2c_transfer(state->i2c, &i2c_msg, 1); 533 534 /* 535 * Bug ID 9: 536 * access to 0xf2xx/0xf6xx 537 * must be followed by read from 0xf2ff/0xf6ff. 538 */ 539 if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 540 stb0899_read_reg(state, (reg | 0x00ff)); 541 542 if (ret != 1) { 543 if (ret != -ERESTARTSYS) 544 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d", 545 reg, data[0], count, ret); 546 return ret < 0 ? ret : -EREMOTEIO; 547 } 548 549 return 0; 550 } 551 552 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data) 553 { 554 return stb0899_write_regs(state, reg, &data, 1); 555 } 556 557 /* 558 * stb0899_get_mclk 559 * Get STB0899 master clock frequency 560 * ExtClk: external clock frequency (Hz) 561 */ 562 static u32 stb0899_get_mclk(struct stb0899_state *state) 563 { 564 u32 mclk = 0, div = 0; 565 566 div = stb0899_read_reg(state, STB0899_NCOARSE); 567 mclk = (div + 1) * state->config->xtal_freq / 6; 568 dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk); 569 570 return mclk; 571 } 572 573 /* 574 * stb0899_set_mclk 575 * Set STB0899 master Clock frequency 576 * Mclk: demodulator master clock 577 * ExtClk: external clock frequency (Hz) 578 */ 579 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk) 580 { 581 struct stb0899_internal *internal = &state->internal; 582 u8 mdiv = 0; 583 584 dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config); 585 mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1; 586 dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv); 587 588 stb0899_write_reg(state, STB0899_NCOARSE, mdiv); 589 internal->master_clk = stb0899_get_mclk(state); 590 591 dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk); 592 } 593 594 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable) 595 { 596 struct stb0899_config *config = state->config; 597 const struct stb0899_postproc *postproc = config->postproc; 598 599 /* post process event */ 600 if (postproc) { 601 if (enable) { 602 if (postproc[ctl].level == STB0899_GPIOPULLUP) 603 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 604 else 605 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 606 } else { 607 if (postproc[ctl].level == STB0899_GPIOPULLUP) 608 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 609 else 610 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 611 } 612 } 613 return 0; 614 } 615 616 static void stb0899_release(struct dvb_frontend *fe) 617 { 618 struct stb0899_state *state = fe->demodulator_priv; 619 620 dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend"); 621 /* post process event */ 622 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 623 kfree(state); 624 } 625 626 /* 627 * stb0899_get_alpha 628 * return: rolloff 629 */ 630 static int stb0899_get_alpha(struct stb0899_state *state) 631 { 632 u8 mode_coeff; 633 634 mode_coeff = stb0899_read_reg(state, STB0899_DEMOD); 635 636 if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1) 637 return 20; 638 else 639 return 35; 640 } 641 642 /* 643 * stb0899_init_calc 644 */ 645 static void stb0899_init_calc(struct stb0899_state *state) 646 { 647 struct stb0899_internal *internal = &state->internal; 648 int master_clk; 649 u8 agc[2]; 650 u32 reg; 651 652 /* Read registers (in burst mode) */ 653 stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */ 654 655 /* Initial calculations */ 656 master_clk = stb0899_get_mclk(state); 657 internal->t_agc1 = 0; 658 internal->t_agc2 = 0; 659 internal->master_clk = master_clk; 660 internal->mclk = master_clk / 65536L; 661 internal->rolloff = stb0899_get_alpha(state); 662 663 /* DVBS2 Initial calculations */ 664 /* Set AGC value to the middle */ 665 internal->agc_gain = 8154; 666 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); 667 STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain); 668 stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); 669 670 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA); 671 internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg); 672 673 internal->center_freq = 0; 674 internal->av_frame_coarse = 10; 675 internal->av_frame_fine = 20; 676 internal->step_size = 2; 677 /* 678 if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO)) 679 pParams->IQLocked = 0; 680 else 681 pParams->IQLocked = 1; 682 */ 683 } 684 685 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout) 686 { 687 u8 reg = 0; 688 unsigned long start = jiffies; 689 690 while (1) { 691 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 692 if (!STB0899_GETFIELD(FIFOFULL, reg)) 693 break; 694 if ((jiffies - start) > timeout) { 695 dprintk(state->verbose, FE_ERROR, 1, "timed out !!"); 696 return -ETIMEDOUT; 697 } 698 } 699 700 return 0; 701 } 702 703 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) 704 { 705 struct stb0899_state *state = fe->demodulator_priv; 706 u8 reg, i; 707 708 if (cmd->msg_len > 8) 709 return -EINVAL; 710 711 /* enable FIFO precharge */ 712 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 713 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1); 714 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 715 for (i = 0; i < cmd->msg_len; i++) { 716 /* wait for FIFO empty */ 717 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0) 718 return -ETIMEDOUT; 719 720 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]); 721 } 722 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 723 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0); 724 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 725 msleep(100); 726 return 0; 727 } 728 729 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout) 730 { 731 u8 reg = 0; 732 unsigned long start = jiffies; 733 734 while (!STB0899_GETFIELD(RXEND, reg)) { 735 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 736 if (jiffies - start > timeout) { 737 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 738 return -ETIMEDOUT; 739 } 740 msleep(10); 741 } 742 743 return 0; 744 } 745 746 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply) 747 { 748 struct stb0899_state *state = fe->demodulator_priv; 749 u8 reg, length = 0, i; 750 int result; 751 752 if (stb0899_wait_diseqc_rxidle(state, 100) < 0) 753 return -ETIMEDOUT; 754 755 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 756 if (STB0899_GETFIELD(RXEND, reg)) { 757 758 reg = stb0899_read_reg(state, STB0899_DISRX_ST1); 759 length = STB0899_GETFIELD(FIFOBYTENBR, reg); 760 761 if (length > sizeof (reply->msg)) { 762 result = -EOVERFLOW; 763 goto exit; 764 } 765 reply->msg_len = length; 766 767 /* extract data */ 768 for (i = 0; i < length; i++) 769 reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO); 770 } 771 772 return 0; 773 exit: 774 775 return result; 776 } 777 778 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout) 779 { 780 u8 reg = 0; 781 unsigned long start = jiffies; 782 783 while (!STB0899_GETFIELD(TXIDLE, reg)) { 784 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 785 if (jiffies - start > timeout) { 786 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 787 return -ETIMEDOUT; 788 } 789 msleep(10); 790 } 791 return 0; 792 } 793 794 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst) 795 { 796 struct stb0899_state *state = fe->demodulator_priv; 797 u8 reg, old_state; 798 799 /* wait for diseqc idle */ 800 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 801 return -ETIMEDOUT; 802 803 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 804 old_state = reg; 805 /* set to burst mode */ 806 STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03); 807 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01); 808 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 809 switch (burst) { 810 case SEC_MINI_A: 811 /* unmodulated */ 812 stb0899_write_reg(state, STB0899_DISFIFO, 0x00); 813 break; 814 case SEC_MINI_B: 815 /* modulated */ 816 stb0899_write_reg(state, STB0899_DISFIFO, 0xff); 817 break; 818 } 819 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 820 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00); 821 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 822 /* wait for diseqc idle */ 823 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 824 return -ETIMEDOUT; 825 826 /* restore state */ 827 stb0899_write_reg(state, STB0899_DISCNTRL1, old_state); 828 829 return 0; 830 } 831 832 static int stb0899_diseqc_init(struct stb0899_state *state) 833 { 834 /* 835 struct dvb_diseqc_slave_reply rx_data; 836 */ 837 u8 f22_tx, reg; 838 839 u32 mclk, tx_freq = 22000;/* count = 0, i; */ 840 reg = stb0899_read_reg(state, STB0899_DISCNTRL2); 841 STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0); 842 stb0899_write_reg(state, STB0899_DISCNTRL2, reg); 843 844 /* disable Tx spy */ 845 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 846 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1); 847 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 848 849 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 850 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0); 851 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 852 853 mclk = stb0899_get_mclk(state); 854 f22_tx = mclk / (tx_freq * 32); 855 stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */ 856 state->rx_freq = 20000; 857 858 return 0; 859 } 860 861 static int stb0899_sleep(struct dvb_frontend *fe) 862 { 863 struct stb0899_state *state = fe->demodulator_priv; 864 /* 865 u8 reg; 866 */ 867 dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))"); 868 /* post process event */ 869 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 870 871 return 0; 872 } 873 874 static int stb0899_wakeup(struct dvb_frontend *fe) 875 { 876 int rc; 877 struct stb0899_state *state = fe->demodulator_priv; 878 879 if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI))) 880 return rc; 881 /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */ 882 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00))) 883 return rc; 884 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00))) 885 return rc; 886 887 /* post process event */ 888 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1); 889 890 return 0; 891 } 892 893 static int stb0899_init(struct dvb_frontend *fe) 894 { 895 int i; 896 struct stb0899_state *state = fe->demodulator_priv; 897 struct stb0899_config *config = state->config; 898 899 dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... "); 900 901 /* init device */ 902 dprintk(state->verbose, FE_DEBUG, 1, "init device"); 903 for (i = 0; config->init_dev[i].address != 0xffff; i++) 904 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data); 905 906 dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod"); 907 /* init S2 demod */ 908 for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++) 909 stb0899_write_s2reg(state, STB0899_S2DEMOD, 910 config->init_s2_demod[i].base_address, 911 config->init_s2_demod[i].offset, 912 config->init_s2_demod[i].data); 913 914 dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod"); 915 /* init S1 demod */ 916 for (i = 0; config->init_s1_demod[i].address != 0xffff; i++) 917 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data); 918 919 dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC"); 920 /* init S2 fec */ 921 for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++) 922 stb0899_write_s2reg(state, STB0899_S2FEC, 923 config->init_s2_fec[i].base_address, 924 config->init_s2_fec[i].offset, 925 config->init_s2_fec[i].data); 926 927 dprintk(state->verbose, FE_DEBUG, 1, "init TST"); 928 /* init test */ 929 for (i = 0; config->init_tst[i].address != 0xffff; i++) 930 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data); 931 932 stb0899_init_calc(state); 933 stb0899_diseqc_init(state); 934 935 return 0; 936 } 937 938 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val) 939 { 940 int res = 0; 941 int min = 0, med; 942 943 if (val < tab[min].read) 944 res = tab[min].real; 945 else if (val >= tab[max].read) 946 res = tab[max].real; 947 else { 948 while ((max - min) > 1) { 949 med = (max + min) / 2; 950 if (val >= tab[min].read && val < tab[med].read) 951 max = med; 952 else 953 min = med; 954 } 955 res = ((val - tab[min].read) * 956 (tab[max].real - tab[min].real) / 957 (tab[max].read - tab[min].read)) + 958 tab[min].real; 959 } 960 961 return res; 962 } 963 964 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 965 { 966 struct stb0899_state *state = fe->demodulator_priv; 967 struct stb0899_internal *internal = &state->internal; 968 969 int val; 970 u32 reg; 971 *strength = 0; 972 switch (state->delsys) { 973 case SYS_DVBS: 974 case SYS_DSS: 975 if (internal->lock) { 976 reg = stb0899_read_reg(state, STB0899_VSTATUS); 977 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 978 979 reg = stb0899_read_reg(state, STB0899_AGCIQIN); 980 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg); 981 982 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val); 983 *strength += 750; 984 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm", 985 val & 0xff, *strength); 986 } 987 } 988 break; 989 case SYS_DVBS2: 990 if (internal->lock) { 991 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN); 992 val = STB0899_GETFIELD(IF_AGC_GAIN, reg); 993 994 *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val); 995 *strength += 950; 996 dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm", 997 val & 0x3fff, *strength); 998 } 999 break; 1000 default: 1001 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1002 return -EINVAL; 1003 } 1004 1005 return 0; 1006 } 1007 1008 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr) 1009 { 1010 struct stb0899_state *state = fe->demodulator_priv; 1011 struct stb0899_internal *internal = &state->internal; 1012 1013 unsigned int val, quant, quantn = -1, est, estn = -1; 1014 u8 buf[2]; 1015 u32 reg; 1016 1017 *snr = 0; 1018 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1019 switch (state->delsys) { 1020 case SYS_DVBS: 1021 case SYS_DSS: 1022 if (internal->lock) { 1023 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1024 1025 stb0899_read_regs(state, STB0899_NIRM, buf, 2); 1026 val = MAKEWORD16(buf[0], buf[1]); 1027 1028 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val); 1029 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n", 1030 buf[0], buf[1], val, *snr); 1031 } 1032 } 1033 break; 1034 case SYS_DVBS2: 1035 if (internal->lock) { 1036 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); 1037 quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg); 1038 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); 1039 est = STB0899_GETFIELD(ESN0_EST, reg); 1040 if (est == 1) 1041 val = 301; /* C/N = 30.1 dB */ 1042 else if (est == 2) 1043 val = 270; /* C/N = 27.0 dB */ 1044 else { 1045 /* quantn = 100 * log(quant^2) */ 1046 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100); 1047 /* estn = 100 * log(est) */ 1048 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est); 1049 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */ 1050 val = (quantn - estn) / 10; 1051 } 1052 *snr = val; 1053 dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm", 1054 quant, quantn, est, estn, val); 1055 } 1056 break; 1057 default: 1058 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1059 return -EINVAL; 1060 } 1061 1062 return 0; 1063 } 1064 1065 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status) 1066 { 1067 struct stb0899_state *state = fe->demodulator_priv; 1068 struct stb0899_internal *internal = &state->internal; 1069 u8 reg; 1070 *status = 0; 1071 1072 switch (state->delsys) { 1073 case SYS_DVBS: 1074 case SYS_DSS: 1075 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS"); 1076 if (internal->lock) { 1077 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1078 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1079 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK"); 1080 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; 1081 1082 reg = stb0899_read_reg(state, STB0899_PLPARM); 1083 if (STB0899_GETFIELD(VITCURPUN, reg)) { 1084 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC"); 1085 *status |= FE_HAS_VITERBI | FE_HAS_SYNC; 1086 /* post process event */ 1087 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1088 } 1089 } 1090 } 1091 break; 1092 case SYS_DVBS2: 1093 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2"); 1094 if (internal->lock) { 1095 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); 1096 if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) { 1097 *status |= FE_HAS_CARRIER; 1098 dprintk(state->verbose, FE_DEBUG, 1, 1099 "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER"); 1100 1101 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); 1102 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) { 1103 *status |= FE_HAS_LOCK; 1104 dprintk(state->verbose, FE_DEBUG, 1, 1105 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK"); 1106 1107 } 1108 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) { 1109 *status |= FE_HAS_VITERBI; 1110 dprintk(state->verbose, FE_DEBUG, 1, 1111 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI"); 1112 } 1113 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) { 1114 *status |= FE_HAS_SYNC; 1115 dprintk(state->verbose, FE_DEBUG, 1, 1116 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC"); 1117 /* post process event */ 1118 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1119 } 1120 } 1121 } 1122 break; 1123 default: 1124 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1125 return -EINVAL; 1126 } 1127 return 0; 1128 } 1129 1130 /* 1131 * stb0899_get_error 1132 * viterbi error for DVB-S/DSS 1133 * packet error for DVB-S2 1134 * Bit Error Rate or Packet Error Rate * 10 ^ 7 1135 */ 1136 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber) 1137 { 1138 struct stb0899_state *state = fe->demodulator_priv; 1139 struct stb0899_internal *internal = &state->internal; 1140 1141 u8 lsb, msb; 1142 1143 *ber = 0; 1144 1145 switch (state->delsys) { 1146 case SYS_DVBS: 1147 case SYS_DSS: 1148 if (internal->lock) { 1149 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1150 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1151 *ber = MAKEWORD16(msb, lsb); 1152 /* Viterbi Check */ 1153 if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) { 1154 /* Error Rate */ 1155 *ber *= 9766; 1156 /* ber = ber * 10 ^ 7 */ 1157 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1158 *ber /= 8; 1159 } 1160 } 1161 break; 1162 case SYS_DVBS2: 1163 if (internal->lock) { 1164 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1165 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1166 *ber = MAKEWORD16(msb, lsb); 1167 /* ber = ber * 10 ^ 7 */ 1168 *ber *= 10000000; 1169 *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1170 } 1171 break; 1172 default: 1173 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1174 return -EINVAL; 1175 } 1176 1177 return 0; 1178 } 1179 1180 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) 1181 { 1182 struct stb0899_state *state = fe->demodulator_priv; 1183 1184 switch (voltage) { 1185 case SEC_VOLTAGE_13: 1186 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1187 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1188 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00); 1189 break; 1190 case SEC_VOLTAGE_18: 1191 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02); 1192 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1193 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1194 break; 1195 case SEC_VOLTAGE_OFF: 1196 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1197 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82); 1198 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1199 break; 1200 default: 1201 return -EINVAL; 1202 } 1203 1204 return 0; 1205 } 1206 1207 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) 1208 { 1209 struct stb0899_state *state = fe->demodulator_priv; 1210 struct stb0899_internal *internal = &state->internal; 1211 1212 u8 div, reg; 1213 1214 /* wait for diseqc idle */ 1215 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 1216 return -ETIMEDOUT; 1217 1218 switch (tone) { 1219 case SEC_TONE_ON: 1220 div = (internal->master_clk / 100) / 5632; 1221 div = (div + 5) / 10; 1222 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66); 1223 reg = stb0899_read_reg(state, STB0899_ACRPRESC); 1224 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03); 1225 stb0899_write_reg(state, STB0899_ACRPRESC, reg); 1226 stb0899_write_reg(state, STB0899_ACRDIV1, div); 1227 break; 1228 case SEC_TONE_OFF: 1229 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20); 1230 break; 1231 default: 1232 return -EINVAL; 1233 } 1234 return 0; 1235 } 1236 1237 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 1238 { 1239 int i2c_stat; 1240 struct stb0899_state *state = fe->demodulator_priv; 1241 1242 i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT); 1243 if (i2c_stat < 0) 1244 goto err; 1245 1246 if (enable) { 1247 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ..."); 1248 i2c_stat |= STB0899_I2CTON; 1249 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1250 goto err; 1251 } else { 1252 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ..."); 1253 i2c_stat &= ~STB0899_I2CTON; 1254 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1255 goto err; 1256 } 1257 return 0; 1258 err: 1259 dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed"); 1260 return -EREMOTEIO; 1261 } 1262 1263 1264 static inline void CONVERT32(u32 x, char *str) 1265 { 1266 *str++ = (x >> 24) & 0xff; 1267 *str++ = (x >> 16) & 0xff; 1268 *str++ = (x >> 8) & 0xff; 1269 *str++ = (x >> 0) & 0xff; 1270 *str = '\0'; 1271 } 1272 1273 static int stb0899_get_dev_id(struct stb0899_state *state) 1274 { 1275 u8 chip_id, release; 1276 u16 id; 1277 u32 demod_ver = 0, fec_ver = 0; 1278 char demod_str[5] = { 0 }; 1279 char fec_str[5] = { 0 }; 1280 1281 id = stb0899_read_reg(state, STB0899_DEV_ID); 1282 dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id); 1283 chip_id = STB0899_GETFIELD(CHIP_ID, id); 1284 release = STB0899_GETFIELD(CHIP_REL, id); 1285 1286 dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]", 1287 chip_id, release); 1288 1289 CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str); 1290 1291 demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID); 1292 dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver); 1293 CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str); 1294 fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG); 1295 if (! (chip_id > 0)) { 1296 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899"); 1297 1298 return -ENODEV; 1299 } 1300 dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver); 1301 1302 return 0; 1303 } 1304 1305 static void stb0899_set_delivery(struct stb0899_state *state) 1306 { 1307 u8 reg; 1308 u8 stop_clk[2]; 1309 1310 stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1); 1311 stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2); 1312 1313 switch (state->delsys) { 1314 case SYS_DVBS: 1315 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S"); 1316 /* FECM/Viterbi ON */ 1317 reg = stb0899_read_reg(state, STB0899_FECM); 1318 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1319 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1320 stb0899_write_reg(state, STB0899_FECM, reg); 1321 1322 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1323 stb0899_write_reg(state, STB0899_TSULC, 0x40); 1324 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1325 stb0899_write_reg(state, STB0899_TSLPL, 0x12); 1326 1327 reg = stb0899_read_reg(state, STB0899_TSTRES); 1328 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1329 stb0899_write_reg(state, STB0899_TSTRES, reg); 1330 1331 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1332 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1333 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1334 1335 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1336 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1337 1338 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1); 1339 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1340 1341 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1342 break; 1343 case SYS_DVBS2: 1344 /* FECM/Viterbi OFF */ 1345 reg = stb0899_read_reg(state, STB0899_FECM); 1346 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1347 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0); 1348 stb0899_write_reg(state, STB0899_FECM, reg); 1349 1350 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1351 stb0899_write_reg(state, STB0899_TSULC, 0x42); 1352 stb0899_write_reg(state, STB0899_RSLLC, 0x40); 1353 stb0899_write_reg(state, STB0899_TSLPL, 0x02); 1354 1355 reg = stb0899_read_reg(state, STB0899_TSTRES); 1356 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0); 1357 stb0899_write_reg(state, STB0899_TSTRES, reg); 1358 1359 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1360 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0); 1361 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0); 1362 1363 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0); 1364 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0); 1365 1366 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0); 1367 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1368 1369 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0); 1370 break; 1371 case SYS_DSS: 1372 /* FECM/Viterbi ON */ 1373 reg = stb0899_read_reg(state, STB0899_FECM); 1374 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1); 1375 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1376 stb0899_write_reg(state, STB0899_FECM, reg); 1377 1378 stb0899_write_reg(state, STB0899_RSULC, 0xa1); 1379 stb0899_write_reg(state, STB0899_TSULC, 0x61); 1380 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1381 1382 reg = stb0899_read_reg(state, STB0899_TSTRES); 1383 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1384 stb0899_write_reg(state, STB0899_TSTRES, reg); 1385 1386 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1387 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1388 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1389 1390 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1391 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1392 1393 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1394 1395 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1396 break; 1397 default: 1398 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1399 break; 1400 } 1401 STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0); 1402 stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2); 1403 } 1404 1405 /* 1406 * stb0899_set_iterations 1407 * set the LDPC iteration scale function 1408 */ 1409 static void stb0899_set_iterations(struct stb0899_state *state) 1410 { 1411 struct stb0899_internal *internal = &state->internal; 1412 struct stb0899_config *config = state->config; 1413 1414 s32 iter_scale; 1415 u32 reg; 1416 1417 iter_scale = 17 * (internal->master_clk / 1000); 1418 iter_scale += 410000; 1419 iter_scale /= (internal->srate / 1000000); 1420 iter_scale /= 1000; 1421 1422 if (iter_scale > config->ldpc_max_iter) 1423 iter_scale = config->ldpc_max_iter; 1424 1425 reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER); 1426 STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale); 1427 stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg); 1428 } 1429 1430 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe) 1431 { 1432 struct stb0899_state *state = fe->demodulator_priv; 1433 struct stb0899_params *i_params = &state->params; 1434 struct stb0899_internal *internal = &state->internal; 1435 struct stb0899_config *config = state->config; 1436 struct dtv_frontend_properties *props = &fe->dtv_property_cache; 1437 1438 u32 SearchRange, gain; 1439 1440 i_params->freq = props->frequency; 1441 i_params->srate = props->symbol_rate; 1442 state->delsys = props->delivery_system; 1443 dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); 1444 1445 SearchRange = 10000000; 1446 dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); 1447 /* checking Search Range is meaningless for a fixed 3 Mhz */ 1448 if (INRANGE(i_params->srate, 1000000, 45000000)) { 1449 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE"); 1450 stb0899_set_delivery(state); 1451 1452 if (state->config->tuner_set_rfsiggain) { 1453 if (internal->srate > 15000000) 1454 gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */ 1455 else if (internal->srate > 5000000) 1456 gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */ 1457 else 1458 gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */ 1459 state->config->tuner_set_rfsiggain(fe, gain); 1460 } 1461 1462 if (i_params->srate <= 5000000) 1463 stb0899_set_mclk(state, config->lo_clk); 1464 else 1465 stb0899_set_mclk(state, config->hi_clk); 1466 1467 switch (state->delsys) { 1468 case SYS_DVBS: 1469 case SYS_DSS: 1470 dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system"); 1471 internal->freq = i_params->freq; 1472 internal->srate = i_params->srate; 1473 /* 1474 * search = user search range + 1475 * 500Khz + 1476 * 2 * Tuner_step_size + 1477 * 10% of the symbol rate 1478 */ 1479 internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5); 1480 internal->derot_percent = 30; 1481 1482 /* What to do for tuners having no bandwidth setup ? */ 1483 /* enable tuner I/O */ 1484 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1485 1486 if (state->config->tuner_set_bandwidth) 1487 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10); 1488 if (state->config->tuner_get_bandwidth) 1489 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1490 1491 /* disable tuner I/O */ 1492 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1493 1494 /* Set DVB-S1 AGC */ 1495 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11); 1496 1497 /* Run the search algorithm */ 1498 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo .."); 1499 if (stb0899_dvbs_algo(state) == RANGEOK) { 1500 internal->lock = 1; 1501 dprintk(state->verbose, FE_DEBUG, 1, 1502 "-------------------------------------> DVB-S LOCK !"); 1503 1504 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */ 1505 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1506 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1507 // dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status); 1508 // dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl); 1509 1510 return DVBFE_ALGO_SEARCH_SUCCESS; 1511 } else { 1512 internal->lock = 0; 1513 1514 return DVBFE_ALGO_SEARCH_FAILED; 1515 } 1516 break; 1517 case SYS_DVBS2: 1518 internal->freq = i_params->freq; 1519 internal->srate = i_params->srate; 1520 internal->srch_range = SearchRange; 1521 1522 /* enable tuner I/O */ 1523 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1524 1525 if (state->config->tuner_set_bandwidth) 1526 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange)); 1527 if (state->config->tuner_get_bandwidth) 1528 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1529 1530 /* disable tuner I/O */ 1531 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1532 1533 // pParams->SpectralInv = pSearch->IQ_Inversion; 1534 1535 /* Set DVB-S2 AGC */ 1536 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c); 1537 1538 /* Set IterScale =f(MCLK,SYMB) */ 1539 stb0899_set_iterations(state); 1540 1541 /* Run the search algorithm */ 1542 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo .."); 1543 if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) { 1544 internal->lock = 1; 1545 dprintk(state->verbose, FE_DEBUG, 1, 1546 "-------------------------------------> DVB-S2 LOCK !"); 1547 1548 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */ 1549 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1550 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1551 1552 return DVBFE_ALGO_SEARCH_SUCCESS; 1553 } else { 1554 internal->lock = 0; 1555 1556 return DVBFE_ALGO_SEARCH_FAILED; 1557 } 1558 break; 1559 default: 1560 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1561 return DVBFE_ALGO_SEARCH_INVALID; 1562 } 1563 } 1564 1565 return DVBFE_ALGO_SEARCH_ERROR; 1566 } 1567 1568 static int stb0899_get_frontend(struct dvb_frontend *fe) 1569 { 1570 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 1571 struct stb0899_state *state = fe->demodulator_priv; 1572 struct stb0899_internal *internal = &state->internal; 1573 1574 dprintk(state->verbose, FE_DEBUG, 1, "Get params"); 1575 p->symbol_rate = internal->srate; 1576 p->frequency = internal->freq; 1577 1578 return 0; 1579 } 1580 1581 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe) 1582 { 1583 return DVBFE_ALGO_CUSTOM; 1584 } 1585 1586 static struct dvb_frontend_ops stb0899_ops = { 1587 .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS }, 1588 .info = { 1589 .name = "STB0899 Multistandard", 1590 .frequency_min = 950000, 1591 .frequency_max = 2150000, 1592 .frequency_stepsize = 0, 1593 .frequency_tolerance = 0, 1594 .symbol_rate_min = 5000000, 1595 .symbol_rate_max = 45000000, 1596 1597 .caps = FE_CAN_INVERSION_AUTO | 1598 FE_CAN_FEC_AUTO | 1599 FE_CAN_2G_MODULATION | 1600 FE_CAN_QPSK 1601 }, 1602 1603 .release = stb0899_release, 1604 .init = stb0899_init, 1605 .sleep = stb0899_sleep, 1606 // .wakeup = stb0899_wakeup, 1607 1608 .i2c_gate_ctrl = stb0899_i2c_gate_ctrl, 1609 1610 .get_frontend_algo = stb0899_frontend_algo, 1611 .search = stb0899_search, 1612 .get_frontend = stb0899_get_frontend, 1613 1614 1615 .read_status = stb0899_read_status, 1616 .read_snr = stb0899_read_snr, 1617 .read_signal_strength = stb0899_read_signal_strength, 1618 .read_ber = stb0899_read_ber, 1619 1620 .set_voltage = stb0899_set_voltage, 1621 .set_tone = stb0899_set_tone, 1622 1623 .diseqc_send_master_cmd = stb0899_send_diseqc_msg, 1624 .diseqc_recv_slave_reply = stb0899_recv_slave_reply, 1625 .diseqc_send_burst = stb0899_send_diseqc_burst, 1626 }; 1627 1628 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c) 1629 { 1630 struct stb0899_state *state = NULL; 1631 1632 state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL); 1633 if (state == NULL) 1634 goto error; 1635 1636 state->verbose = &verbose; 1637 state->config = config; 1638 state->i2c = i2c; 1639 state->frontend.ops = stb0899_ops; 1640 state->frontend.demodulator_priv = state; 1641 /* use configured inversion as default -- we'll later autodetect inversion */ 1642 state->internal.inversion = config->inversion; 1643 1644 stb0899_wakeup(&state->frontend); 1645 if (stb0899_get_dev_id(state) == -ENODEV) { 1646 printk("%s: Exiting .. !\n", __func__); 1647 goto error; 1648 } 1649 1650 printk("%s: Attaching STB0899 \n", __func__); 1651 return &state->frontend; 1652 1653 error: 1654 kfree(state); 1655 return NULL; 1656 } 1657 EXPORT_SYMBOL(stb0899_attach); 1658 MODULE_PARM_DESC(verbose, "Set Verbosity level"); 1659 MODULE_AUTHOR("Manu Abraham"); 1660 MODULE_DESCRIPTION("STB0899 Multi-Std frontend"); 1661 MODULE_LICENSE("GPL"); 1662