1 /* 2 STB0899 Multistandard Frontend driver 3 Copyright (C) Manu Abraham (abraham.manu@gmail.com) 4 5 Copyright (C) ST Microelectronics 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #include <linux/init.h> 23 #include <linux/jiffies.h> 24 #include <linux/kernel.h> 25 #include <linux/module.h> 26 #include <linux/slab.h> 27 #include <linux/string.h> 28 29 #include <linux/dvb/frontend.h> 30 #include "dvb_frontend.h" 31 32 #include "stb0899_drv.h" 33 #include "stb0899_priv.h" 34 #include "stb0899_reg.h" 35 36 /* Max transfer size done by I2C transfer functions */ 37 #define MAX_XFER_SIZE 64 38 39 static unsigned int verbose = 0;//1; 40 module_param(verbose, int, 0644); 41 42 /* C/N in dB/10, NIRM/NIRL */ 43 static const struct stb0899_tab stb0899_cn_tab[] = { 44 { 200, 2600 }, 45 { 190, 2700 }, 46 { 180, 2860 }, 47 { 170, 3020 }, 48 { 160, 3210 }, 49 { 150, 3440 }, 50 { 140, 3710 }, 51 { 130, 4010 }, 52 { 120, 4360 }, 53 { 110, 4740 }, 54 { 100, 5190 }, 55 { 90, 5670 }, 56 { 80, 6200 }, 57 { 70, 6770 }, 58 { 60, 7360 }, 59 { 50, 7970 }, 60 { 40, 8250 }, 61 { 30, 9000 }, 62 { 20, 9450 }, 63 { 15, 9600 }, 64 }; 65 66 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10. 67 * As measured, connected to a modulator. 68 * -8.0 to -50.0 dBm directly connected, 69 * -52.0 to -74.8 with extra attenuation. 70 * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm. 71 * Crude linear extrapolation below -84.8dBm and above -8.0dBm. 72 */ 73 static const struct stb0899_tab stb0899_dvbsrf_tab[] = { 74 { -750, -128 }, 75 { -748, -94 }, 76 { -745, -92 }, 77 { -735, -90 }, 78 { -720, -87 }, 79 { -670, -77 }, 80 { -640, -70 }, 81 { -610, -62 }, 82 { -600, -60 }, 83 { -590, -56 }, 84 { -560, -41 }, 85 { -540, -25 }, 86 { -530, -17 }, 87 { -520, -11 }, 88 { -500, 1 }, 89 { -490, 6 }, 90 { -480, 10 }, 91 { -440, 22 }, 92 { -420, 27 }, 93 { -400, 31 }, 94 { -380, 34 }, 95 { -340, 40 }, 96 { -320, 43 }, 97 { -280, 48 }, 98 { -250, 52 }, 99 { -230, 55 }, 100 { -180, 61 }, 101 { -140, 66 }, 102 { -90, 73 }, 103 { -80, 74 }, 104 { 500, 127 } 105 }; 106 107 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10. 108 * As measured, connected to a modulator. 109 * -8.0 to -50.1 dBm directly connected, 110 * -53.0 to -76.6 with extra attenuation. 111 * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm. 112 * Crude linear extrapolation below -76.6dBm and above -8.0dBm. 113 */ 114 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = { 115 { 700, 0 }, 116 { -80, 3217 }, 117 { -150, 3893 }, 118 { -190, 4217 }, 119 { -240, 4621 }, 120 { -280, 4945 }, 121 { -320, 5273 }, 122 { -350, 5545 }, 123 { -370, 5741 }, 124 { -410, 6147 }, 125 { -450, 6671 }, 126 { -490, 7413 }, 127 { -501, 7665 }, 128 { -530, 8767 }, 129 { -560, 10219 }, 130 { -580, 10939 }, 131 { -590, 11518 }, 132 { -600, 11723 }, 133 { -650, 12659 }, 134 { -690, 13219 }, 135 { -730, 13645 }, 136 { -750, 13909 }, 137 { -766, 14153 }, 138 { -950, 16383 } 139 }; 140 141 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/ 142 static struct stb0899_tab stb0899_quant_tab[] = { 143 { 0, 0 }, 144 { 0, 100 }, 145 { 600, 200 }, 146 { 950, 299 }, 147 { 1200, 398 }, 148 { 1400, 501 }, 149 { 1560, 603 }, 150 { 1690, 700 }, 151 { 1810, 804 }, 152 { 1910, 902 }, 153 { 2000, 1000 }, 154 { 2080, 1096 }, 155 { 2160, 1202 }, 156 { 2230, 1303 }, 157 { 2350, 1496 }, 158 { 2410, 1603 }, 159 { 2460, 1698 }, 160 { 2510, 1799 }, 161 { 2600, 1995 }, 162 { 2650, 2113 }, 163 { 2690, 2213 }, 164 { 2720, 2291 }, 165 { 2760, 2399 }, 166 { 2800, 2512 }, 167 { 2860, 2692 }, 168 { 2930, 2917 }, 169 { 2960, 3020 }, 170 { 3010, 3199 }, 171 { 3040, 3311 }, 172 { 3060, 3388 }, 173 { 3120, 3631 }, 174 { 3190, 3936 }, 175 { 3400, 5012 }, 176 { 3610, 6383 }, 177 { 3800, 7943 }, 178 { 4210, 12735 }, 179 { 4500, 17783 }, 180 { 4690, 22131 }, 181 { 4810, 25410 } 182 }; 183 184 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */ 185 static struct stb0899_tab stb0899_est_tab[] = { 186 { 0, 0 }, 187 { 0, 1 }, 188 { 301, 2 }, 189 { 1204, 16 }, 190 { 1806, 64 }, 191 { 2408, 256 }, 192 { 2709, 512 }, 193 { 3010, 1023 }, 194 { 3311, 2046 }, 195 { 3612, 4093 }, 196 { 3823, 6653 }, 197 { 3913, 8185 }, 198 { 4010, 10233 }, 199 { 4107, 12794 }, 200 { 4214, 16368 }, 201 { 4266, 18450 }, 202 { 4311, 20464 }, 203 { 4353, 22542 }, 204 { 4391, 24604 }, 205 { 4425, 26607 }, 206 { 4457, 28642 }, 207 { 4487, 30690 }, 208 { 4515, 32734 }, 209 { 4612, 40926 }, 210 { 4692, 49204 }, 211 { 4816, 65464 }, 212 { 4913, 81846 }, 213 { 4993, 98401 }, 214 { 5060, 114815 }, 215 { 5118, 131220 }, 216 { 5200, 158489 }, 217 { 5300, 199526 }, 218 { 5400, 251189 }, 219 { 5500, 316228 }, 220 { 5600, 398107 }, 221 { 5720, 524807 }, 222 { 5721, 526017 }, 223 }; 224 225 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 226 { 227 int ret; 228 229 u8 b0[] = { reg >> 8, reg & 0xff }; 230 u8 buf; 231 232 struct i2c_msg msg[] = { 233 { 234 .addr = state->config->demod_address, 235 .flags = 0, 236 .buf = b0, 237 .len = 2 238 },{ 239 .addr = state->config->demod_address, 240 .flags = I2C_M_RD, 241 .buf = &buf, 242 .len = 1 243 } 244 }; 245 246 ret = i2c_transfer(state->i2c, msg, 2); 247 if (ret != 2) { 248 if (ret != -ERESTARTSYS) 249 dprintk(state->verbose, FE_ERROR, 1, 250 "Read error, Reg=[0x%02x], Status=%d", 251 reg, ret); 252 253 return ret < 0 ? ret : -EREMOTEIO; 254 } 255 if (unlikely(*state->verbose >= FE_DEBUGREG)) 256 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x", 257 reg, buf); 258 259 return (unsigned int)buf; 260 } 261 262 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg) 263 { 264 int result; 265 266 result = _stb0899_read_reg(state, reg); 267 /* 268 * Bug ID 9: 269 * access to 0xf2xx/0xf6xx 270 * must be followed by read from 0xf2ff/0xf6ff. 271 */ 272 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 273 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 274 _stb0899_read_reg(state, (reg | 0x00ff)); 275 276 return result; 277 } 278 279 u32 _stb0899_read_s2reg(struct stb0899_state *state, 280 u32 stb0899_i2cdev, 281 u32 stb0899_base_addr, 282 u16 stb0899_reg_offset) 283 { 284 int status; 285 u32 data; 286 u8 buf[7] = { 0 }; 287 u16 tmpaddr; 288 289 u8 buf_0[] = { 290 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 291 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 292 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 293 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 294 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 295 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 296 }; 297 u8 buf_1[] = { 298 0x00, /* 0xf3 Reg Offset */ 299 0x00, /* 0x44 Reg Offset */ 300 }; 301 302 struct i2c_msg msg_0 = { 303 .addr = state->config->demod_address, 304 .flags = 0, 305 .buf = buf_0, 306 .len = 6 307 }; 308 309 struct i2c_msg msg_1 = { 310 .addr = state->config->demod_address, 311 .flags = 0, 312 .buf = buf_1, 313 .len = 2 314 }; 315 316 struct i2c_msg msg_r = { 317 .addr = state->config->demod_address, 318 .flags = I2C_M_RD, 319 .buf = buf, 320 .len = 4 321 }; 322 323 tmpaddr = stb0899_reg_offset & 0xff00; 324 if (!(stb0899_reg_offset & 0x8)) 325 tmpaddr = stb0899_reg_offset | 0x20; 326 327 buf_1[0] = GETBYTE(tmpaddr, BYTE1); 328 buf_1[1] = GETBYTE(tmpaddr, BYTE0); 329 330 status = i2c_transfer(state->i2c, &msg_0, 1); 331 if (status < 1) { 332 if (status != -ERESTARTSYS) 333 printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 334 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 335 336 goto err; 337 } 338 339 /* Dummy */ 340 status = i2c_transfer(state->i2c, &msg_1, 1); 341 if (status < 1) 342 goto err; 343 344 status = i2c_transfer(state->i2c, &msg_r, 1); 345 if (status < 1) 346 goto err; 347 348 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 349 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 350 351 /* Actual */ 352 status = i2c_transfer(state->i2c, &msg_1, 1); 353 if (status < 1) { 354 if (status != -ERESTARTSYS) 355 printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 356 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 357 goto err; 358 } 359 360 status = i2c_transfer(state->i2c, &msg_r, 1); 361 if (status < 1) { 362 if (status != -ERESTARTSYS) 363 printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n", 364 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status); 365 return status < 0 ? status : -EREMOTEIO; 366 } 367 368 data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]); 369 if (unlikely(*state->verbose >= FE_DEBUGREG)) 370 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 371 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data); 372 373 return data; 374 375 err: 376 return status < 0 ? status : -EREMOTEIO; 377 } 378 379 int stb0899_write_s2reg(struct stb0899_state *state, 380 u32 stb0899_i2cdev, 381 u32 stb0899_base_addr, 382 u16 stb0899_reg_offset, 383 u32 stb0899_data) 384 { 385 int status; 386 387 /* Base Address Setup */ 388 u8 buf_0[] = { 389 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */ 390 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */ 391 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */ 392 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */ 393 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */ 394 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */ 395 }; 396 u8 buf_1[] = { 397 0x00, /* 0xf3 Reg Offset */ 398 0x00, /* 0x44 Reg Offset */ 399 0x00, /* data */ 400 0x00, /* data */ 401 0x00, /* data */ 402 0x00, /* data */ 403 }; 404 405 struct i2c_msg msg_0 = { 406 .addr = state->config->demod_address, 407 .flags = 0, 408 .buf = buf_0, 409 .len = 6 410 }; 411 412 struct i2c_msg msg_1 = { 413 .addr = state->config->demod_address, 414 .flags = 0, 415 .buf = buf_1, 416 .len = 6 417 }; 418 419 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1); 420 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0); 421 buf_1[2] = GETBYTE(stb0899_data, BYTE0); 422 buf_1[3] = GETBYTE(stb0899_data, BYTE1); 423 buf_1[4] = GETBYTE(stb0899_data, BYTE2); 424 buf_1[5] = GETBYTE(stb0899_data, BYTE3); 425 426 if (unlikely(*state->verbose >= FE_DEBUGREG)) 427 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n", 428 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data); 429 430 status = i2c_transfer(state->i2c, &msg_0, 1); 431 if (unlikely(status < 1)) { 432 if (status != -ERESTARTSYS) 433 printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 434 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 435 goto err; 436 } 437 status = i2c_transfer(state->i2c, &msg_1, 1); 438 if (unlikely(status < 1)) { 439 if (status != -ERESTARTSYS) 440 printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n", 441 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status); 442 443 return status < 0 ? status : -EREMOTEIO; 444 } 445 446 return 0; 447 448 err: 449 return status < 0 ? status : -EREMOTEIO; 450 } 451 452 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count) 453 { 454 int status; 455 456 u8 b0[] = { reg >> 8, reg & 0xff }; 457 458 struct i2c_msg msg[] = { 459 { 460 .addr = state->config->demod_address, 461 .flags = 0, 462 .buf = b0, 463 .len = 2 464 },{ 465 .addr = state->config->demod_address, 466 .flags = I2C_M_RD, 467 .buf = buf, 468 .len = count 469 } 470 }; 471 472 status = i2c_transfer(state->i2c, msg, 2); 473 if (status != 2) { 474 if (status != -ERESTARTSYS) 475 printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n", 476 __func__, reg, count, status); 477 goto err; 478 } 479 /* 480 * Bug ID 9: 481 * access to 0xf2xx/0xf6xx 482 * must be followed by read from 0xf2ff/0xf6ff. 483 */ 484 if ((reg != 0xf2ff) && (reg != 0xf6ff) && 485 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 486 _stb0899_read_reg(state, (reg | 0x00ff)); 487 488 if (unlikely(*state->verbose >= FE_DEBUGREG)) { 489 int i; 490 491 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); 492 for (i = 0; i < count; i++) { 493 printk(" %02x", buf[i]); 494 } 495 printk("\n"); 496 } 497 498 return 0; 499 err: 500 return status < 0 ? status : -EREMOTEIO; 501 } 502 503 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count) 504 { 505 int ret; 506 u8 buf[MAX_XFER_SIZE]; 507 struct i2c_msg i2c_msg = { 508 .addr = state->config->demod_address, 509 .flags = 0, 510 .buf = buf, 511 .len = 2 + count 512 }; 513 514 if (2 + count > sizeof(buf)) { 515 printk(KERN_WARNING 516 "%s: i2c wr reg=%04x: len=%d is too big!\n", 517 KBUILD_MODNAME, reg, count); 518 return -EINVAL; 519 } 520 521 buf[0] = reg >> 8; 522 buf[1] = reg & 0xff; 523 memcpy(&buf[2], data, count); 524 525 if (unlikely(*state->verbose >= FE_DEBUGREG)) { 526 int i; 527 528 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg); 529 for (i = 0; i < count; i++) 530 printk(" %02x", data[i]); 531 printk("\n"); 532 } 533 ret = i2c_transfer(state->i2c, &i2c_msg, 1); 534 535 /* 536 * Bug ID 9: 537 * access to 0xf2xx/0xf6xx 538 * must be followed by read from 0xf2ff/0xf6ff. 539 */ 540 if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600))) 541 stb0899_read_reg(state, (reg | 0x00ff)); 542 543 if (ret != 1) { 544 if (ret != -ERESTARTSYS) 545 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d", 546 reg, data[0], count, ret); 547 return ret < 0 ? ret : -EREMOTEIO; 548 } 549 550 return 0; 551 } 552 553 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data) 554 { 555 return stb0899_write_regs(state, reg, &data, 1); 556 } 557 558 /* 559 * stb0899_get_mclk 560 * Get STB0899 master clock frequency 561 * ExtClk: external clock frequency (Hz) 562 */ 563 static u32 stb0899_get_mclk(struct stb0899_state *state) 564 { 565 u32 mclk = 0, div = 0; 566 567 div = stb0899_read_reg(state, STB0899_NCOARSE); 568 mclk = (div + 1) * state->config->xtal_freq / 6; 569 dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk); 570 571 return mclk; 572 } 573 574 /* 575 * stb0899_set_mclk 576 * Set STB0899 master Clock frequency 577 * Mclk: demodulator master clock 578 * ExtClk: external clock frequency (Hz) 579 */ 580 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk) 581 { 582 struct stb0899_internal *internal = &state->internal; 583 u8 mdiv = 0; 584 585 dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config); 586 mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1; 587 dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv); 588 589 stb0899_write_reg(state, STB0899_NCOARSE, mdiv); 590 internal->master_clk = stb0899_get_mclk(state); 591 592 dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk); 593 } 594 595 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable) 596 { 597 struct stb0899_config *config = state->config; 598 const struct stb0899_postproc *postproc = config->postproc; 599 600 /* post process event */ 601 if (postproc) { 602 if (enable) { 603 if (postproc[ctl].level == STB0899_GPIOPULLUP) 604 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 605 else 606 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 607 } else { 608 if (postproc[ctl].level == STB0899_GPIOPULLUP) 609 stb0899_write_reg(state, postproc[ctl].gpio, 0x82); 610 else 611 stb0899_write_reg(state, postproc[ctl].gpio, 0x02); 612 } 613 } 614 return 0; 615 } 616 617 static void stb0899_release(struct dvb_frontend *fe) 618 { 619 struct stb0899_state *state = fe->demodulator_priv; 620 621 dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend"); 622 /* post process event */ 623 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 624 kfree(state); 625 } 626 627 /* 628 * stb0899_get_alpha 629 * return: rolloff 630 */ 631 static int stb0899_get_alpha(struct stb0899_state *state) 632 { 633 u8 mode_coeff; 634 635 mode_coeff = stb0899_read_reg(state, STB0899_DEMOD); 636 637 if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1) 638 return 20; 639 else 640 return 35; 641 } 642 643 /* 644 * stb0899_init_calc 645 */ 646 static void stb0899_init_calc(struct stb0899_state *state) 647 { 648 struct stb0899_internal *internal = &state->internal; 649 int master_clk; 650 u8 agc[2]; 651 u32 reg; 652 653 /* Read registers (in burst mode) */ 654 stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */ 655 656 /* Initial calculations */ 657 master_clk = stb0899_get_mclk(state); 658 internal->t_agc1 = 0; 659 internal->t_agc2 = 0; 660 internal->master_clk = master_clk; 661 internal->mclk = master_clk / 65536L; 662 internal->rolloff = stb0899_get_alpha(state); 663 664 /* DVBS2 Initial calculations */ 665 /* Set AGC value to the middle */ 666 internal->agc_gain = 8154; 667 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL); 668 STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain); 669 stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg); 670 671 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA); 672 internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg); 673 674 internal->center_freq = 0; 675 internal->av_frame_coarse = 10; 676 internal->av_frame_fine = 20; 677 internal->step_size = 2; 678 /* 679 if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO)) 680 pParams->IQLocked = 0; 681 else 682 pParams->IQLocked = 1; 683 */ 684 } 685 686 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout) 687 { 688 u8 reg = 0; 689 unsigned long start = jiffies; 690 691 while (1) { 692 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 693 if (!STB0899_GETFIELD(FIFOFULL, reg)) 694 break; 695 if (time_after(jiffies, start + timeout)) { 696 dprintk(state->verbose, FE_ERROR, 1, "timed out !!"); 697 return -ETIMEDOUT; 698 } 699 } 700 701 return 0; 702 } 703 704 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) 705 { 706 struct stb0899_state *state = fe->demodulator_priv; 707 u8 reg, i; 708 709 if (cmd->msg_len > sizeof(cmd->msg)) 710 return -EINVAL; 711 712 /* enable FIFO precharge */ 713 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 714 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1); 715 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 716 for (i = 0; i < cmd->msg_len; i++) { 717 /* wait for FIFO empty */ 718 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0) 719 return -ETIMEDOUT; 720 721 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]); 722 } 723 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 724 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0); 725 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 726 msleep(100); 727 return 0; 728 } 729 730 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout) 731 { 732 u8 reg = 0; 733 unsigned long start = jiffies; 734 735 while (!STB0899_GETFIELD(RXEND, reg)) { 736 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 737 if (time_after(jiffies, start + timeout)) { 738 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 739 return -ETIMEDOUT; 740 } 741 msleep(10); 742 } 743 744 return 0; 745 } 746 747 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply) 748 { 749 struct stb0899_state *state = fe->demodulator_priv; 750 u8 reg, length = 0, i; 751 int result; 752 753 if (stb0899_wait_diseqc_rxidle(state, 100) < 0) 754 return -ETIMEDOUT; 755 756 reg = stb0899_read_reg(state, STB0899_DISRX_ST0); 757 if (STB0899_GETFIELD(RXEND, reg)) { 758 759 reg = stb0899_read_reg(state, STB0899_DISRX_ST1); 760 length = STB0899_GETFIELD(FIFOBYTENBR, reg); 761 762 if (length > sizeof (reply->msg)) { 763 result = -EOVERFLOW; 764 goto exit; 765 } 766 reply->msg_len = length; 767 768 /* extract data */ 769 for (i = 0; i < length; i++) 770 reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO); 771 } 772 773 return 0; 774 exit: 775 776 return result; 777 } 778 779 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout) 780 { 781 u8 reg = 0; 782 unsigned long start = jiffies; 783 784 while (!STB0899_GETFIELD(TXIDLE, reg)) { 785 reg = stb0899_read_reg(state, STB0899_DISSTATUS); 786 if (time_after(jiffies, start + timeout)) { 787 dprintk(state->verbose, FE_ERROR, 1, "timed out!!"); 788 return -ETIMEDOUT; 789 } 790 msleep(10); 791 } 792 return 0; 793 } 794 795 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst) 796 { 797 struct stb0899_state *state = fe->demodulator_priv; 798 u8 reg, old_state; 799 800 /* wait for diseqc idle */ 801 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 802 return -ETIMEDOUT; 803 804 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 805 old_state = reg; 806 /* set to burst mode */ 807 STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03); 808 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01); 809 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 810 switch (burst) { 811 case SEC_MINI_A: 812 /* unmodulated */ 813 stb0899_write_reg(state, STB0899_DISFIFO, 0x00); 814 break; 815 case SEC_MINI_B: 816 /* modulated */ 817 stb0899_write_reg(state, STB0899_DISFIFO, 0xff); 818 break; 819 } 820 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 821 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00); 822 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 823 /* wait for diseqc idle */ 824 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 825 return -ETIMEDOUT; 826 827 /* restore state */ 828 stb0899_write_reg(state, STB0899_DISCNTRL1, old_state); 829 830 return 0; 831 } 832 833 static int stb0899_diseqc_init(struct stb0899_state *state) 834 { 835 /* 836 struct dvb_diseqc_slave_reply rx_data; 837 */ 838 u8 f22_tx, reg; 839 840 u32 mclk, tx_freq = 22000;/* count = 0, i; */ 841 reg = stb0899_read_reg(state, STB0899_DISCNTRL2); 842 STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0); 843 stb0899_write_reg(state, STB0899_DISCNTRL2, reg); 844 845 /* disable Tx spy */ 846 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 847 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1); 848 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 849 850 reg = stb0899_read_reg(state, STB0899_DISCNTRL1); 851 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0); 852 stb0899_write_reg(state, STB0899_DISCNTRL1, reg); 853 854 mclk = stb0899_get_mclk(state); 855 f22_tx = mclk / (tx_freq * 32); 856 stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */ 857 state->rx_freq = 20000; 858 859 return 0; 860 } 861 862 static int stb0899_sleep(struct dvb_frontend *fe) 863 { 864 struct stb0899_state *state = fe->demodulator_priv; 865 /* 866 u8 reg; 867 */ 868 dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))"); 869 /* post process event */ 870 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0); 871 872 return 0; 873 } 874 875 static int stb0899_wakeup(struct dvb_frontend *fe) 876 { 877 int rc; 878 struct stb0899_state *state = fe->demodulator_priv; 879 880 if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI))) 881 return rc; 882 /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */ 883 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00))) 884 return rc; 885 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00))) 886 return rc; 887 888 /* post process event */ 889 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1); 890 891 return 0; 892 } 893 894 static int stb0899_init(struct dvb_frontend *fe) 895 { 896 int i; 897 struct stb0899_state *state = fe->demodulator_priv; 898 struct stb0899_config *config = state->config; 899 900 dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... "); 901 902 /* init device */ 903 dprintk(state->verbose, FE_DEBUG, 1, "init device"); 904 for (i = 0; config->init_dev[i].address != 0xffff; i++) 905 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data); 906 907 dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod"); 908 /* init S2 demod */ 909 for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++) 910 stb0899_write_s2reg(state, STB0899_S2DEMOD, 911 config->init_s2_demod[i].base_address, 912 config->init_s2_demod[i].offset, 913 config->init_s2_demod[i].data); 914 915 dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod"); 916 /* init S1 demod */ 917 for (i = 0; config->init_s1_demod[i].address != 0xffff; i++) 918 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data); 919 920 dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC"); 921 /* init S2 fec */ 922 for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++) 923 stb0899_write_s2reg(state, STB0899_S2FEC, 924 config->init_s2_fec[i].base_address, 925 config->init_s2_fec[i].offset, 926 config->init_s2_fec[i].data); 927 928 dprintk(state->verbose, FE_DEBUG, 1, "init TST"); 929 /* init test */ 930 for (i = 0; config->init_tst[i].address != 0xffff; i++) 931 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data); 932 933 stb0899_init_calc(state); 934 stb0899_diseqc_init(state); 935 936 return 0; 937 } 938 939 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val) 940 { 941 int res = 0; 942 int min = 0, med; 943 944 if (val < tab[min].read) 945 res = tab[min].real; 946 else if (val >= tab[max].read) 947 res = tab[max].real; 948 else { 949 while ((max - min) > 1) { 950 med = (max + min) / 2; 951 if (val >= tab[min].read && val < tab[med].read) 952 max = med; 953 else 954 min = med; 955 } 956 res = ((val - tab[min].read) * 957 (tab[max].real - tab[min].real) / 958 (tab[max].read - tab[min].read)) + 959 tab[min].real; 960 } 961 962 return res; 963 } 964 965 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 966 { 967 struct stb0899_state *state = fe->demodulator_priv; 968 struct stb0899_internal *internal = &state->internal; 969 970 int val; 971 u32 reg; 972 *strength = 0; 973 switch (state->delsys) { 974 case SYS_DVBS: 975 case SYS_DSS: 976 if (internal->lock) { 977 reg = stb0899_read_reg(state, STB0899_VSTATUS); 978 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 979 980 reg = stb0899_read_reg(state, STB0899_AGCIQIN); 981 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg); 982 983 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val); 984 *strength += 750; 985 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm", 986 val & 0xff, *strength); 987 } 988 } 989 break; 990 case SYS_DVBS2: 991 if (internal->lock) { 992 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN); 993 val = STB0899_GETFIELD(IF_AGC_GAIN, reg); 994 995 *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val); 996 *strength += 950; 997 dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm", 998 val & 0x3fff, *strength); 999 } 1000 break; 1001 default: 1002 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1003 return -EINVAL; 1004 } 1005 1006 return 0; 1007 } 1008 1009 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr) 1010 { 1011 struct stb0899_state *state = fe->demodulator_priv; 1012 struct stb0899_internal *internal = &state->internal; 1013 1014 unsigned int val, quant, quantn = -1, est, estn = -1; 1015 u8 buf[2]; 1016 u32 reg; 1017 1018 *snr = 0; 1019 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1020 switch (state->delsys) { 1021 case SYS_DVBS: 1022 case SYS_DSS: 1023 if (internal->lock) { 1024 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1025 1026 stb0899_read_regs(state, STB0899_NIRM, buf, 2); 1027 val = MAKEWORD16(buf[0], buf[1]); 1028 1029 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val); 1030 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n", 1031 buf[0], buf[1], val, *snr); 1032 } 1033 } 1034 break; 1035 case SYS_DVBS2: 1036 if (internal->lock) { 1037 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1); 1038 quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg); 1039 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2); 1040 est = STB0899_GETFIELD(ESN0_EST, reg); 1041 if (est == 1) 1042 val = 301; /* C/N = 30.1 dB */ 1043 else if (est == 2) 1044 val = 270; /* C/N = 27.0 dB */ 1045 else { 1046 /* quantn = 100 * log(quant^2) */ 1047 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100); 1048 /* estn = 100 * log(est) */ 1049 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est); 1050 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */ 1051 val = (quantn - estn) / 10; 1052 } 1053 *snr = val; 1054 dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm", 1055 quant, quantn, est, estn, val); 1056 } 1057 break; 1058 default: 1059 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1060 return -EINVAL; 1061 } 1062 1063 return 0; 1064 } 1065 1066 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status) 1067 { 1068 struct stb0899_state *state = fe->demodulator_priv; 1069 struct stb0899_internal *internal = &state->internal; 1070 u8 reg; 1071 *status = 0; 1072 1073 switch (state->delsys) { 1074 case SYS_DVBS: 1075 case SYS_DSS: 1076 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS"); 1077 if (internal->lock) { 1078 reg = stb0899_read_reg(state, STB0899_VSTATUS); 1079 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) { 1080 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK"); 1081 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; 1082 1083 reg = stb0899_read_reg(state, STB0899_PLPARM); 1084 if (STB0899_GETFIELD(VITCURPUN, reg)) { 1085 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC"); 1086 *status |= FE_HAS_VITERBI | FE_HAS_SYNC; 1087 /* post process event */ 1088 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1089 } 1090 } 1091 } 1092 break; 1093 case SYS_DVBS2: 1094 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2"); 1095 if (internal->lock) { 1096 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2); 1097 if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) { 1098 *status |= FE_HAS_CARRIER; 1099 dprintk(state->verbose, FE_DEBUG, 1, 1100 "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER"); 1101 1102 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1); 1103 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) { 1104 *status |= FE_HAS_LOCK; 1105 dprintk(state->verbose, FE_DEBUG, 1, 1106 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK"); 1107 1108 } 1109 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) { 1110 *status |= FE_HAS_VITERBI; 1111 dprintk(state->verbose, FE_DEBUG, 1, 1112 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI"); 1113 } 1114 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) { 1115 *status |= FE_HAS_SYNC; 1116 dprintk(state->verbose, FE_DEBUG, 1, 1117 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC"); 1118 /* post process event */ 1119 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1); 1120 } 1121 } 1122 } 1123 break; 1124 default: 1125 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1126 return -EINVAL; 1127 } 1128 return 0; 1129 } 1130 1131 /* 1132 * stb0899_get_error 1133 * viterbi error for DVB-S/DSS 1134 * packet error for DVB-S2 1135 * Bit Error Rate or Packet Error Rate * 10 ^ 7 1136 */ 1137 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber) 1138 { 1139 struct stb0899_state *state = fe->demodulator_priv; 1140 struct stb0899_internal *internal = &state->internal; 1141 1142 u8 lsb, msb; 1143 1144 *ber = 0; 1145 1146 switch (state->delsys) { 1147 case SYS_DVBS: 1148 case SYS_DSS: 1149 if (internal->lock) { 1150 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1151 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1152 *ber = MAKEWORD16(msb, lsb); 1153 /* Viterbi Check */ 1154 if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) { 1155 /* Error Rate */ 1156 *ber *= 9766; 1157 /* ber = ber * 10 ^ 7 */ 1158 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1159 *ber /= 8; 1160 } 1161 } 1162 break; 1163 case SYS_DVBS2: 1164 if (internal->lock) { 1165 lsb = stb0899_read_reg(state, STB0899_ECNT1L); 1166 msb = stb0899_read_reg(state, STB0899_ECNT1M); 1167 *ber = MAKEWORD16(msb, lsb); 1168 /* ber = ber * 10 ^ 7 */ 1169 *ber *= 10000000; 1170 *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl)))); 1171 } 1172 break; 1173 default: 1174 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system"); 1175 return -EINVAL; 1176 } 1177 1178 return 0; 1179 } 1180 1181 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) 1182 { 1183 struct stb0899_state *state = fe->demodulator_priv; 1184 1185 switch (voltage) { 1186 case SEC_VOLTAGE_13: 1187 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1188 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1189 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00); 1190 break; 1191 case SEC_VOLTAGE_18: 1192 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02); 1193 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02); 1194 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1195 break; 1196 case SEC_VOLTAGE_OFF: 1197 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82); 1198 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82); 1199 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82); 1200 break; 1201 default: 1202 return -EINVAL; 1203 } 1204 1205 return 0; 1206 } 1207 1208 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) 1209 { 1210 struct stb0899_state *state = fe->demodulator_priv; 1211 struct stb0899_internal *internal = &state->internal; 1212 1213 u8 div, reg; 1214 1215 /* wait for diseqc idle */ 1216 if (stb0899_wait_diseqc_txidle(state, 100) < 0) 1217 return -ETIMEDOUT; 1218 1219 switch (tone) { 1220 case SEC_TONE_ON: 1221 div = (internal->master_clk / 100) / 5632; 1222 div = (div + 5) / 10; 1223 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66); 1224 reg = stb0899_read_reg(state, STB0899_ACRPRESC); 1225 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03); 1226 stb0899_write_reg(state, STB0899_ACRPRESC, reg); 1227 stb0899_write_reg(state, STB0899_ACRDIV1, div); 1228 break; 1229 case SEC_TONE_OFF: 1230 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20); 1231 break; 1232 default: 1233 return -EINVAL; 1234 } 1235 return 0; 1236 } 1237 1238 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 1239 { 1240 int i2c_stat; 1241 struct stb0899_state *state = fe->demodulator_priv; 1242 1243 i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT); 1244 if (i2c_stat < 0) 1245 goto err; 1246 1247 if (enable) { 1248 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ..."); 1249 i2c_stat |= STB0899_I2CTON; 1250 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1251 goto err; 1252 } else { 1253 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ..."); 1254 i2c_stat &= ~STB0899_I2CTON; 1255 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0) 1256 goto err; 1257 } 1258 return 0; 1259 err: 1260 dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed"); 1261 return -EREMOTEIO; 1262 } 1263 1264 1265 static inline void CONVERT32(u32 x, char *str) 1266 { 1267 *str++ = (x >> 24) & 0xff; 1268 *str++ = (x >> 16) & 0xff; 1269 *str++ = (x >> 8) & 0xff; 1270 *str++ = (x >> 0) & 0xff; 1271 *str = '\0'; 1272 } 1273 1274 static int stb0899_get_dev_id(struct stb0899_state *state) 1275 { 1276 u8 chip_id, release; 1277 u16 id; 1278 u32 demod_ver = 0, fec_ver = 0; 1279 char demod_str[5] = { 0 }; 1280 char fec_str[5] = { 0 }; 1281 1282 id = stb0899_read_reg(state, STB0899_DEV_ID); 1283 dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id); 1284 chip_id = STB0899_GETFIELD(CHIP_ID, id); 1285 release = STB0899_GETFIELD(CHIP_REL, id); 1286 1287 dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]", 1288 chip_id, release); 1289 1290 CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str); 1291 1292 demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID); 1293 dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver); 1294 CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str); 1295 fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG); 1296 if (! (chip_id > 0)) { 1297 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899"); 1298 1299 return -ENODEV; 1300 } 1301 dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver); 1302 1303 return 0; 1304 } 1305 1306 static void stb0899_set_delivery(struct stb0899_state *state) 1307 { 1308 u8 reg; 1309 u8 stop_clk[2]; 1310 1311 stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1); 1312 stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2); 1313 1314 switch (state->delsys) { 1315 case SYS_DVBS: 1316 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S"); 1317 /* FECM/Viterbi ON */ 1318 reg = stb0899_read_reg(state, STB0899_FECM); 1319 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1320 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1321 stb0899_write_reg(state, STB0899_FECM, reg); 1322 1323 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1324 stb0899_write_reg(state, STB0899_TSULC, 0x40); 1325 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1326 stb0899_write_reg(state, STB0899_TSLPL, 0x12); 1327 1328 reg = stb0899_read_reg(state, STB0899_TSTRES); 1329 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1330 stb0899_write_reg(state, STB0899_TSTRES, reg); 1331 1332 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1333 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1334 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1335 1336 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1337 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1338 1339 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1); 1340 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1341 1342 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1343 break; 1344 case SYS_DVBS2: 1345 /* FECM/Viterbi OFF */ 1346 reg = stb0899_read_reg(state, STB0899_FECM); 1347 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0); 1348 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0); 1349 stb0899_write_reg(state, STB0899_FECM, reg); 1350 1351 stb0899_write_reg(state, STB0899_RSULC, 0xb1); 1352 stb0899_write_reg(state, STB0899_TSULC, 0x42); 1353 stb0899_write_reg(state, STB0899_RSLLC, 0x40); 1354 stb0899_write_reg(state, STB0899_TSLPL, 0x02); 1355 1356 reg = stb0899_read_reg(state, STB0899_TSTRES); 1357 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0); 1358 stb0899_write_reg(state, STB0899_TSTRES, reg); 1359 1360 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1361 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0); 1362 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0); 1363 1364 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0); 1365 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0); 1366 1367 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0); 1368 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1369 1370 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0); 1371 break; 1372 case SYS_DSS: 1373 /* FECM/Viterbi ON */ 1374 reg = stb0899_read_reg(state, STB0899_FECM); 1375 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1); 1376 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1); 1377 stb0899_write_reg(state, STB0899_FECM, reg); 1378 1379 stb0899_write_reg(state, STB0899_RSULC, 0xa1); 1380 stb0899_write_reg(state, STB0899_TSULC, 0x61); 1381 stb0899_write_reg(state, STB0899_RSLLC, 0x42); 1382 1383 reg = stb0899_read_reg(state, STB0899_TSTRES); 1384 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1); 1385 stb0899_write_reg(state, STB0899_TSTRES, reg); 1386 1387 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1); 1388 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1); 1389 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1); 1390 1391 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1); 1392 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1); 1393 1394 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0); 1395 1396 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1); 1397 break; 1398 default: 1399 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1400 break; 1401 } 1402 STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0); 1403 stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2); 1404 } 1405 1406 /* 1407 * stb0899_set_iterations 1408 * set the LDPC iteration scale function 1409 */ 1410 static void stb0899_set_iterations(struct stb0899_state *state) 1411 { 1412 struct stb0899_internal *internal = &state->internal; 1413 struct stb0899_config *config = state->config; 1414 1415 s32 iter_scale; 1416 u32 reg; 1417 1418 iter_scale = 17 * (internal->master_clk / 1000); 1419 iter_scale += 410000; 1420 iter_scale /= (internal->srate / 1000000); 1421 iter_scale /= 1000; 1422 1423 if (iter_scale > config->ldpc_max_iter) 1424 iter_scale = config->ldpc_max_iter; 1425 1426 reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER); 1427 STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale); 1428 stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg); 1429 } 1430 1431 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe) 1432 { 1433 struct stb0899_state *state = fe->demodulator_priv; 1434 struct stb0899_params *i_params = &state->params; 1435 struct stb0899_internal *internal = &state->internal; 1436 struct stb0899_config *config = state->config; 1437 struct dtv_frontend_properties *props = &fe->dtv_property_cache; 1438 1439 u32 SearchRange, gain; 1440 1441 i_params->freq = props->frequency; 1442 i_params->srate = props->symbol_rate; 1443 state->delsys = props->delivery_system; 1444 dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); 1445 1446 SearchRange = 10000000; 1447 dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); 1448 /* checking Search Range is meaningless for a fixed 3 Mhz */ 1449 if (INRANGE(i_params->srate, 1000000, 45000000)) { 1450 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE"); 1451 stb0899_set_delivery(state); 1452 1453 if (state->config->tuner_set_rfsiggain) { 1454 if (internal->srate > 15000000) 1455 gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */ 1456 else if (internal->srate > 5000000) 1457 gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */ 1458 else 1459 gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */ 1460 state->config->tuner_set_rfsiggain(fe, gain); 1461 } 1462 1463 if (i_params->srate <= 5000000) 1464 stb0899_set_mclk(state, config->lo_clk); 1465 else 1466 stb0899_set_mclk(state, config->hi_clk); 1467 1468 switch (state->delsys) { 1469 case SYS_DVBS: 1470 case SYS_DSS: 1471 dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system"); 1472 internal->freq = i_params->freq; 1473 internal->srate = i_params->srate; 1474 /* 1475 * search = user search range + 1476 * 500Khz + 1477 * 2 * Tuner_step_size + 1478 * 10% of the symbol rate 1479 */ 1480 internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5); 1481 internal->derot_percent = 30; 1482 1483 /* What to do for tuners having no bandwidth setup ? */ 1484 /* enable tuner I/O */ 1485 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1486 1487 if (state->config->tuner_set_bandwidth) 1488 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10); 1489 if (state->config->tuner_get_bandwidth) 1490 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1491 1492 /* disable tuner I/O */ 1493 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1494 1495 /* Set DVB-S1 AGC */ 1496 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11); 1497 1498 /* Run the search algorithm */ 1499 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo .."); 1500 if (stb0899_dvbs_algo(state) == RANGEOK) { 1501 internal->lock = 1; 1502 dprintk(state->verbose, FE_DEBUG, 1, 1503 "-------------------------------------> DVB-S LOCK !"); 1504 1505 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */ 1506 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1507 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1508 // dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status); 1509 // dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl); 1510 1511 return DVBFE_ALGO_SEARCH_SUCCESS; 1512 } else { 1513 internal->lock = 0; 1514 1515 return DVBFE_ALGO_SEARCH_FAILED; 1516 } 1517 break; 1518 case SYS_DVBS2: 1519 internal->freq = i_params->freq; 1520 internal->srate = i_params->srate; 1521 internal->srch_range = SearchRange; 1522 1523 /* enable tuner I/O */ 1524 stb0899_i2c_gate_ctrl(&state->frontend, 1); 1525 1526 if (state->config->tuner_set_bandwidth) 1527 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange)); 1528 if (state->config->tuner_get_bandwidth) 1529 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); 1530 1531 /* disable tuner I/O */ 1532 stb0899_i2c_gate_ctrl(&state->frontend, 0); 1533 1534 // pParams->SpectralInv = pSearch->IQ_Inversion; 1535 1536 /* Set DVB-S2 AGC */ 1537 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c); 1538 1539 /* Set IterScale =f(MCLK,SYMB) */ 1540 stb0899_set_iterations(state); 1541 1542 /* Run the search algorithm */ 1543 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo .."); 1544 if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) { 1545 internal->lock = 1; 1546 dprintk(state->verbose, FE_DEBUG, 1, 1547 "-------------------------------------> DVB-S2 LOCK !"); 1548 1549 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */ 1550 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS); 1551 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1); 1552 1553 return DVBFE_ALGO_SEARCH_SUCCESS; 1554 } else { 1555 internal->lock = 0; 1556 1557 return DVBFE_ALGO_SEARCH_FAILED; 1558 } 1559 break; 1560 default: 1561 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system"); 1562 return DVBFE_ALGO_SEARCH_INVALID; 1563 } 1564 } 1565 1566 return DVBFE_ALGO_SEARCH_ERROR; 1567 } 1568 1569 static int stb0899_get_frontend(struct dvb_frontend *fe) 1570 { 1571 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 1572 struct stb0899_state *state = fe->demodulator_priv; 1573 struct stb0899_internal *internal = &state->internal; 1574 1575 dprintk(state->verbose, FE_DEBUG, 1, "Get params"); 1576 p->symbol_rate = internal->srate; 1577 p->frequency = internal->freq; 1578 1579 return 0; 1580 } 1581 1582 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe) 1583 { 1584 return DVBFE_ALGO_CUSTOM; 1585 } 1586 1587 static struct dvb_frontend_ops stb0899_ops = { 1588 .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS }, 1589 .info = { 1590 .name = "STB0899 Multistandard", 1591 .frequency_min = 950000, 1592 .frequency_max = 2150000, 1593 .frequency_stepsize = 0, 1594 .frequency_tolerance = 0, 1595 .symbol_rate_min = 5000000, 1596 .symbol_rate_max = 45000000, 1597 1598 .caps = FE_CAN_INVERSION_AUTO | 1599 FE_CAN_FEC_AUTO | 1600 FE_CAN_2G_MODULATION | 1601 FE_CAN_QPSK 1602 }, 1603 1604 .release = stb0899_release, 1605 .init = stb0899_init, 1606 .sleep = stb0899_sleep, 1607 // .wakeup = stb0899_wakeup, 1608 1609 .i2c_gate_ctrl = stb0899_i2c_gate_ctrl, 1610 1611 .get_frontend_algo = stb0899_frontend_algo, 1612 .search = stb0899_search, 1613 .get_frontend = stb0899_get_frontend, 1614 1615 1616 .read_status = stb0899_read_status, 1617 .read_snr = stb0899_read_snr, 1618 .read_signal_strength = stb0899_read_signal_strength, 1619 .read_ber = stb0899_read_ber, 1620 1621 .set_voltage = stb0899_set_voltage, 1622 .set_tone = stb0899_set_tone, 1623 1624 .diseqc_send_master_cmd = stb0899_send_diseqc_msg, 1625 .diseqc_recv_slave_reply = stb0899_recv_slave_reply, 1626 .diseqc_send_burst = stb0899_send_diseqc_burst, 1627 }; 1628 1629 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c) 1630 { 1631 struct stb0899_state *state = NULL; 1632 1633 state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL); 1634 if (state == NULL) 1635 goto error; 1636 1637 state->verbose = &verbose; 1638 state->config = config; 1639 state->i2c = i2c; 1640 state->frontend.ops = stb0899_ops; 1641 state->frontend.demodulator_priv = state; 1642 /* use configured inversion as default -- we'll later autodetect inversion */ 1643 state->internal.inversion = config->inversion; 1644 1645 stb0899_wakeup(&state->frontend); 1646 if (stb0899_get_dev_id(state) == -ENODEV) { 1647 printk("%s: Exiting .. !\n", __func__); 1648 goto error; 1649 } 1650 1651 printk("%s: Attaching STB0899 \n", __func__); 1652 return &state->frontend; 1653 1654 error: 1655 kfree(state); 1656 return NULL; 1657 } 1658 EXPORT_SYMBOL(stb0899_attach); 1659 MODULE_PARM_DESC(verbose, "Set Verbosity level"); 1660 MODULE_AUTHOR("Manu Abraham"); 1661 MODULE_DESCRIPTION("STB0899 Multi-Std frontend"); 1662 MODULE_LICENSE("GPL"); 1663