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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 STB0899 Multistandard Frontend driver4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)5 6 Copyright (C) ST Microelectronics7 8*/9 10#include <linux/init.h>11#include <linux/jiffies.h>12#include <linux/kernel.h>13#include <linux/module.h>14#include <linux/slab.h>15#include <linux/string.h>16 17#include <linux/dvb/frontend.h>18#include <media/dvb_frontend.h>19 20#include "stb0899_drv.h"21#include "stb0899_priv.h"22#include "stb0899_reg.h"23 24/* Max transfer size done by I2C transfer functions */25#define MAX_XFER_SIZE 6426 27static unsigned int verbose = 0;//1;28module_param(verbose, int, 0644);29 30/* C/N in dB/10, NIRM/NIRL */31static const struct stb0899_tab stb0899_cn_tab[] = {32 { 200, 2600 },33 { 190, 2700 },34 { 180, 2860 },35 { 170, 3020 },36 { 160, 3210 },37 { 150, 3440 },38 { 140, 3710 },39 { 130, 4010 },40 { 120, 4360 },41 { 110, 4740 },42 { 100, 5190 },43 { 90, 5670 },44 { 80, 6200 },45 { 70, 6770 },46 { 60, 7360 },47 { 50, 7970 },48 { 40, 8250 },49 { 30, 9000 },50 { 20, 9450 },51 { 15, 9600 },52};53 54/* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.55 * As measured, connected to a modulator.56 * -8.0 to -50.0 dBm directly connected,57 * -52.0 to -74.8 with extra attenuation.58 * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.59 * Crude linear extrapolation below -84.8dBm and above -8.0dBm.60 */61static const struct stb0899_tab stb0899_dvbsrf_tab[] = {62 { -750, -128 },63 { -748, -94 },64 { -745, -92 },65 { -735, -90 },66 { -720, -87 },67 { -670, -77 },68 { -640, -70 },69 { -610, -62 },70 { -600, -60 },71 { -590, -56 },72 { -560, -41 },73 { -540, -25 },74 { -530, -17 },75 { -520, -11 },76 { -500, 1 },77 { -490, 6 },78 { -480, 10 },79 { -440, 22 },80 { -420, 27 },81 { -400, 31 },82 { -380, 34 },83 { -340, 40 },84 { -320, 43 },85 { -280, 48 },86 { -250, 52 },87 { -230, 55 },88 { -180, 61 },89 { -140, 66 },90 { -90, 73 },91 { -80, 74 },92 { 500, 127 }93};94 95/* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.96 * As measured, connected to a modulator.97 * -8.0 to -50.1 dBm directly connected,98 * -53.0 to -76.6 with extra attenuation.99 * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.100 * Crude linear extrapolation below -76.6dBm and above -8.0dBm.101 */102static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {103 { 700, 0 },104 { -80, 3217 },105 { -150, 3893 },106 { -190, 4217 },107 { -240, 4621 },108 { -280, 4945 },109 { -320, 5273 },110 { -350, 5545 },111 { -370, 5741 },112 { -410, 6147 },113 { -450, 6671 },114 { -490, 7413 },115 { -501, 7665 },116 { -530, 8767 },117 { -560, 10219 },118 { -580, 10939 },119 { -590, 11518 },120 { -600, 11723 },121 { -650, 12659 },122 { -690, 13219 },123 { -730, 13645 },124 { -750, 13909 },125 { -766, 14153 },126 { -950, 16383 }127};128 129/* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/130static struct stb0899_tab stb0899_quant_tab[] = {131 { 0, 0 },132 { 0, 100 },133 { 600, 200 },134 { 950, 299 },135 { 1200, 398 },136 { 1400, 501 },137 { 1560, 603 },138 { 1690, 700 },139 { 1810, 804 },140 { 1910, 902 },141 { 2000, 1000 },142 { 2080, 1096 },143 { 2160, 1202 },144 { 2230, 1303 },145 { 2350, 1496 },146 { 2410, 1603 },147 { 2460, 1698 },148 { 2510, 1799 },149 { 2600, 1995 },150 { 2650, 2113 },151 { 2690, 2213 },152 { 2720, 2291 },153 { 2760, 2399 },154 { 2800, 2512 },155 { 2860, 2692 },156 { 2930, 2917 },157 { 2960, 3020 },158 { 3010, 3199 },159 { 3040, 3311 },160 { 3060, 3388 },161 { 3120, 3631 },162 { 3190, 3936 },163 { 3400, 5012 },164 { 3610, 6383 },165 { 3800, 7943 },166 { 4210, 12735 },167 { 4500, 17783 },168 { 4690, 22131 },169 { 4810, 25410 }170};171 172/* DVB-S2 Es/N0 estimate in dB/100 vs read value */173static struct stb0899_tab stb0899_est_tab[] = {174 { 0, 0 },175 { 0, 1 },176 { 301, 2 },177 { 1204, 16 },178 { 1806, 64 },179 { 2408, 256 },180 { 2709, 512 },181 { 3010, 1023 },182 { 3311, 2046 },183 { 3612, 4093 },184 { 3823, 6653 },185 { 3913, 8185 },186 { 4010, 10233 },187 { 4107, 12794 },188 { 4214, 16368 },189 { 4266, 18450 },190 { 4311, 20464 },191 { 4353, 22542 },192 { 4391, 24604 },193 { 4425, 26607 },194 { 4457, 28642 },195 { 4487, 30690 },196 { 4515, 32734 },197 { 4612, 40926 },198 { 4692, 49204 },199 { 4816, 65464 },200 { 4913, 81846 },201 { 4993, 98401 },202 { 5060, 114815 },203 { 5118, 131220 },204 { 5200, 158489 },205 { 5300, 199526 },206 { 5400, 251189 },207 { 5500, 316228 },208 { 5600, 398107 },209 { 5720, 524807 },210 { 5721, 526017 },211};212 213static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)214{215 int ret;216 217 u8 b0[] = { reg >> 8, reg & 0xff };218 u8 buf;219 220 struct i2c_msg msg[] = {221 {222 .addr = state->config->demod_address,223 .flags = 0,224 .buf = b0,225 .len = 2226 },{227 .addr = state->config->demod_address,228 .flags = I2C_M_RD,229 .buf = &buf,230 .len = 1231 }232 };233 234 ret = i2c_transfer(state->i2c, msg, 2);235 if (ret != 2) {236 if (ret != -ERESTARTSYS)237 dprintk(state->verbose, FE_ERROR, 1,238 "Read error, Reg=[0x%02x], Status=%d",239 reg, ret);240 241 return ret < 0 ? ret : -EREMOTEIO;242 }243 if (unlikely(*state->verbose >= FE_DEBUGREG))244 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",245 reg, buf);246 247 return (unsigned int)buf;248}249 250int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)251{252 int result;253 254 result = _stb0899_read_reg(state, reg);255 /*256 * Bug ID 9:257 * access to 0xf2xx/0xf6xx258 * must be followed by read from 0xf2ff/0xf6ff.259 */260 if ((reg != 0xf2ff) && (reg != 0xf6ff) &&261 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))262 _stb0899_read_reg(state, (reg | 0x00ff));263 264 return result;265}266 267u32 _stb0899_read_s2reg(struct stb0899_state *state,268 u32 stb0899_i2cdev,269 u32 stb0899_base_addr,270 u16 stb0899_reg_offset)271{272 int status;273 u32 data;274 u8 buf[7] = { 0 };275 u16 tmpaddr;276 277 u8 buf_0[] = {278 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */279 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */280 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */281 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */282 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */283 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */284 };285 u8 buf_1[] = {286 0x00, /* 0xf3 Reg Offset */287 0x00, /* 0x44 Reg Offset */288 };289 290 struct i2c_msg msg_0 = {291 .addr = state->config->demod_address,292 .flags = 0,293 .buf = buf_0,294 .len = 6295 };296 297 struct i2c_msg msg_1 = {298 .addr = state->config->demod_address,299 .flags = 0,300 .buf = buf_1,301 .len = 2302 };303 304 struct i2c_msg msg_r = {305 .addr = state->config->demod_address,306 .flags = I2C_M_RD,307 .buf = buf,308 .len = 4309 };310 311 tmpaddr = stb0899_reg_offset & 0xff00;312 if (!(stb0899_reg_offset & 0x8))313 tmpaddr = stb0899_reg_offset | 0x20;314 315 buf_1[0] = GETBYTE(tmpaddr, BYTE1);316 buf_1[1] = GETBYTE(tmpaddr, BYTE0);317 318 status = i2c_transfer(state->i2c, &msg_0, 1);319 if (status < 1) {320 if (status != -ERESTARTSYS)321 printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",322 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);323 324 goto err;325 }326 327 /* Dummy */328 status = i2c_transfer(state->i2c, &msg_1, 1);329 if (status < 1)330 goto err;331 332 status = i2c_transfer(state->i2c, &msg_r, 1);333 if (status < 1)334 goto err;335 336 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);337 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);338 339 /* Actual */340 status = i2c_transfer(state->i2c, &msg_1, 1);341 if (status < 1) {342 if (status != -ERESTARTSYS)343 printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",344 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);345 goto err;346 }347 348 status = i2c_transfer(state->i2c, &msg_r, 1);349 if (status < 1) {350 if (status != -ERESTARTSYS)351 printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",352 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);353 return status < 0 ? status : -EREMOTEIO;354 }355 356 data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);357 if (unlikely(*state->verbose >= FE_DEBUGREG))358 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",359 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);360 361 return data;362 363err:364 return status < 0 ? status : -EREMOTEIO;365}366 367int stb0899_write_s2reg(struct stb0899_state *state,368 u32 stb0899_i2cdev,369 u32 stb0899_base_addr,370 u16 stb0899_reg_offset,371 u32 stb0899_data)372{373 int status;374 375 /* Base Address Setup */376 u8 buf_0[] = {377 GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */378 GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */379 GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */380 GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */381 GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */382 GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */383 };384 u8 buf_1[] = {385 0x00, /* 0xf3 Reg Offset */386 0x00, /* 0x44 Reg Offset */387 0x00, /* data */388 0x00, /* data */389 0x00, /* data */390 0x00, /* data */391 };392 393 struct i2c_msg msg_0 = {394 .addr = state->config->demod_address,395 .flags = 0,396 .buf = buf_0,397 .len = 6398 };399 400 struct i2c_msg msg_1 = {401 .addr = state->config->demod_address,402 .flags = 0,403 .buf = buf_1,404 .len = 6405 };406 407 buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);408 buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);409 buf_1[2] = GETBYTE(stb0899_data, BYTE0);410 buf_1[3] = GETBYTE(stb0899_data, BYTE1);411 buf_1[4] = GETBYTE(stb0899_data, BYTE2);412 buf_1[5] = GETBYTE(stb0899_data, BYTE3);413 414 if (unlikely(*state->verbose >= FE_DEBUGREG))415 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",416 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);417 418 status = i2c_transfer(state->i2c, &msg_0, 1);419 if (unlikely(status < 1)) {420 if (status != -ERESTARTSYS)421 printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",422 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);423 goto err;424 }425 status = i2c_transfer(state->i2c, &msg_1, 1);426 if (unlikely(status < 1)) {427 if (status != -ERESTARTSYS)428 printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",429 __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);430 431 return status < 0 ? status : -EREMOTEIO;432 }433 434 return 0;435 436err:437 return status < 0 ? status : -EREMOTEIO;438}439 440int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)441{442 int status;443 444 u8 b0[] = { reg >> 8, reg & 0xff };445 446 struct i2c_msg msg[] = {447 {448 .addr = state->config->demod_address,449 .flags = 0,450 .buf = b0,451 .len = 2452 },{453 .addr = state->config->demod_address,454 .flags = I2C_M_RD,455 .buf = buf,456 .len = count457 }458 };459 460 status = i2c_transfer(state->i2c, msg, 2);461 if (status != 2) {462 if (status != -ERESTARTSYS)463 printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",464 __func__, reg, count, status);465 goto err;466 }467 /*468 * Bug ID 9:469 * access to 0xf2xx/0xf6xx470 * must be followed by read from 0xf2ff/0xf6ff.471 */472 if ((reg != 0xf2ff) && (reg != 0xf6ff) &&473 (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))474 _stb0899_read_reg(state, (reg | 0x00ff));475 476 dprintk(state->verbose, FE_DEBUGREG, 1,477 "%s [0x%04x]: %*ph", __func__, reg, count, buf);478 479 return 0;480err:481 return status < 0 ? status : -EREMOTEIO;482}483 484int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)485{486 int ret;487 u8 buf[MAX_XFER_SIZE];488 struct i2c_msg i2c_msg = {489 .addr = state->config->demod_address,490 .flags = 0,491 .buf = buf,492 .len = 2 + count493 };494 495 if (2 + count > sizeof(buf)) {496 printk(KERN_WARNING497 "%s: i2c wr reg=%04x: len=%d is too big!\n",498 KBUILD_MODNAME, reg, count);499 return -EINVAL;500 }501 502 buf[0] = reg >> 8;503 buf[1] = reg & 0xff;504 memcpy(&buf[2], data, count);505 506 dprintk(state->verbose, FE_DEBUGREG, 1,507 "%s [0x%04x]: %*ph", __func__, reg, count, data);508 ret = i2c_transfer(state->i2c, &i2c_msg, 1);509 510 /*511 * Bug ID 9:512 * access to 0xf2xx/0xf6xx513 * must be followed by read from 0xf2ff/0xf6ff.514 */515 if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))516 stb0899_read_reg(state, (reg | 0x00ff));517 518 if (ret != 1) {519 if (ret != -ERESTARTSYS)520 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",521 reg, data[0], count, ret);522 return ret < 0 ? ret : -EREMOTEIO;523 }524 525 return 0;526}527 528int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)529{530 u8 tmp = data;531 return stb0899_write_regs(state, reg, &tmp, 1);532}533 534/*535 * stb0899_get_mclk536 * Get STB0899 master clock frequency537 * ExtClk: external clock frequency (Hz)538 */539static u32 stb0899_get_mclk(struct stb0899_state *state)540{541 u32 mclk = 0, div = 0;542 543 div = stb0899_read_reg(state, STB0899_NCOARSE);544 mclk = (div + 1) * state->config->xtal_freq / 6;545 dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk);546 547 return mclk;548}549 550/*551 * stb0899_set_mclk552 * Set STB0899 master Clock frequency553 * Mclk: demodulator master clock554 * ExtClk: external clock frequency (Hz)555 */556static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk)557{558 struct stb0899_internal *internal = &state->internal;559 u8 mdiv = 0;560 561 dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config);562 mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1;563 dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv);564 565 stb0899_write_reg(state, STB0899_NCOARSE, mdiv);566 internal->master_clk = stb0899_get_mclk(state);567 568 dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk);569}570 571static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)572{573 struct stb0899_config *config = state->config;574 const struct stb0899_postproc *postproc = config->postproc;575 576 /* post process event */577 if (postproc) {578 if (enable) {579 if (postproc[ctl].level == STB0899_GPIOPULLUP)580 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);581 else582 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);583 } else {584 if (postproc[ctl].level == STB0899_GPIOPULLUP)585 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);586 else587 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);588 }589 }590 return 0;591}592 593static void stb0899_detach(struct dvb_frontend *fe)594{595 struct stb0899_state *state = fe->demodulator_priv;596 597 /* post process event */598 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);599}600 601static void stb0899_release(struct dvb_frontend *fe)602{603 struct stb0899_state *state = fe->demodulator_priv;604 605 dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");606 kfree(state);607}608 609/*610 * stb0899_get_alpha611 * return: rolloff612 */613static int stb0899_get_alpha(struct stb0899_state *state)614{615 u8 mode_coeff;616 617 mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);618 619 if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)620 return 20;621 else622 return 35;623}624 625/*626 * stb0899_init_calc627 */628static void stb0899_init_calc(struct stb0899_state *state)629{630 struct stb0899_internal *internal = &state->internal;631 int master_clk;632 u8 agc[2];633 u32 reg;634 635 /* Read registers (in burst mode) */636 stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */637 638 /* Initial calculations */639 master_clk = stb0899_get_mclk(state);640 internal->t_agc1 = 0;641 internal->t_agc2 = 0;642 internal->master_clk = master_clk;643 internal->mclk = master_clk / 65536L;644 internal->rolloff = stb0899_get_alpha(state);645 646 /* DVBS2 Initial calculations */647 /* Set AGC value to the middle */648 internal->agc_gain = 8154;649 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);650 STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);651 stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);652 653 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);654 internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg);655 656 internal->center_freq = 0;657 internal->av_frame_coarse = 10;658 internal->av_frame_fine = 20;659 internal->step_size = 2;660/*661 if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))662 pParams->IQLocked = 0;663 else664 pParams->IQLocked = 1;665*/666}667 668static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)669{670 u8 reg = 0;671 unsigned long start = jiffies;672 673 while (1) {674 reg = stb0899_read_reg(state, STB0899_DISSTATUS);675 if (!STB0899_GETFIELD(FIFOFULL, reg))676 break;677 if (time_after(jiffies, start + timeout)) {678 dprintk(state->verbose, FE_ERROR, 1, "timed out !!");679 return -ETIMEDOUT;680 }681 }682 683 return 0;684}685 686static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)687{688 struct stb0899_state *state = fe->demodulator_priv;689 u8 reg, i;690 691 if (cmd->msg_len > sizeof(cmd->msg))692 return -EINVAL;693 694 /* enable FIFO precharge */695 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);696 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);697 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);698 for (i = 0; i < cmd->msg_len; i++) {699 /* wait for FIFO empty */700 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)701 return -ETIMEDOUT;702 703 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);704 }705 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);706 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);707 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);708 msleep(100);709 return 0;710}711 712static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)713{714 u8 reg = 0;715 unsigned long start = jiffies;716 717 while (!STB0899_GETFIELD(RXEND, reg)) {718 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);719 if (time_after(jiffies, start + timeout)) {720 dprintk(state->verbose, FE_ERROR, 1, "timed out!!");721 return -ETIMEDOUT;722 }723 msleep(10);724 }725 726 return 0;727}728 729static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)730{731 struct stb0899_state *state = fe->demodulator_priv;732 u8 reg, length = 0, i;733 int result;734 735 if (stb0899_wait_diseqc_rxidle(state, 100) < 0)736 return -ETIMEDOUT;737 738 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);739 if (STB0899_GETFIELD(RXEND, reg)) {740 741 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);742 length = STB0899_GETFIELD(FIFOBYTENBR, reg);743 744 if (length > sizeof (reply->msg)) {745 result = -EOVERFLOW;746 goto exit;747 }748 reply->msg_len = length;749 750 /* extract data */751 for (i = 0; i < length; i++)752 reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);753 }754 755 return 0;756exit:757 758 return result;759}760 761static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)762{763 u8 reg = 0;764 unsigned long start = jiffies;765 766 while (!STB0899_GETFIELD(TXIDLE, reg)) {767 reg = stb0899_read_reg(state, STB0899_DISSTATUS);768 if (time_after(jiffies, start + timeout)) {769 dprintk(state->verbose, FE_ERROR, 1, "timed out!!");770 return -ETIMEDOUT;771 }772 msleep(10);773 }774 return 0;775}776 777static int stb0899_send_diseqc_burst(struct dvb_frontend *fe,778 enum fe_sec_mini_cmd burst)779{780 struct stb0899_state *state = fe->demodulator_priv;781 u8 reg, old_state;782 783 /* wait for diseqc idle */784 if (stb0899_wait_diseqc_txidle(state, 100) < 0)785 return -ETIMEDOUT;786 787 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);788 old_state = reg;789 /* set to burst mode */790 STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);791 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);792 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);793 switch (burst) {794 case SEC_MINI_A:795 /* unmodulated */796 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);797 break;798 case SEC_MINI_B:799 /* modulated */800 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);801 break;802 }803 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);804 STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);805 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);806 /* wait for diseqc idle */807 if (stb0899_wait_diseqc_txidle(state, 100) < 0)808 return -ETIMEDOUT;809 810 /* restore state */811 stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);812 813 return 0;814}815 816static int stb0899_diseqc_init(struct stb0899_state *state)817{818/*819 struct dvb_diseqc_slave_reply rx_data;820*/821 u8 f22_tx, reg;822 823 u32 mclk, tx_freq = 22000;/* count = 0, i; */824 reg = stb0899_read_reg(state, STB0899_DISCNTRL2);825 STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);826 stb0899_write_reg(state, STB0899_DISCNTRL2, reg);827 828 /* disable Tx spy */829 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);830 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);831 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);832 833 reg = stb0899_read_reg(state, STB0899_DISCNTRL1);834 STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);835 stb0899_write_reg(state, STB0899_DISCNTRL1, reg);836 837 mclk = stb0899_get_mclk(state);838 f22_tx = mclk / (tx_freq * 32);839 stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */840 state->rx_freq = 20000;841 842 return 0;843}844 845static int stb0899_sleep(struct dvb_frontend *fe)846{847 struct stb0899_state *state = fe->demodulator_priv;848/*849 u8 reg;850*/851 dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");852 /* post process event */853 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);854 855 return 0;856}857 858static int stb0899_wakeup(struct dvb_frontend *fe)859{860 int rc;861 struct stb0899_state *state = fe->demodulator_priv;862 863 if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))864 return rc;865 /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */866 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))867 return rc;868 if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))869 return rc;870 871 /* post process event */872 stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);873 874 return 0;875}876 877static int stb0899_init(struct dvb_frontend *fe)878{879 int i;880 struct stb0899_state *state = fe->demodulator_priv;881 struct stb0899_config *config = state->config;882 883 dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");884 885 /* init device */886 dprintk(state->verbose, FE_DEBUG, 1, "init device");887 for (i = 0; config->init_dev[i].address != 0xffff; i++)888 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);889 890 dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");891 /* init S2 demod */892 for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)893 stb0899_write_s2reg(state, STB0899_S2DEMOD,894 config->init_s2_demod[i].base_address,895 config->init_s2_demod[i].offset,896 config->init_s2_demod[i].data);897 898 dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");899 /* init S1 demod */900 for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)901 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);902 903 dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");904 /* init S2 fec */905 for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)906 stb0899_write_s2reg(state, STB0899_S2FEC,907 config->init_s2_fec[i].base_address,908 config->init_s2_fec[i].offset,909 config->init_s2_fec[i].data);910 911 dprintk(state->verbose, FE_DEBUG, 1, "init TST");912 /* init test */913 for (i = 0; config->init_tst[i].address != 0xffff; i++)914 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);915 916 stb0899_init_calc(state);917 stb0899_diseqc_init(state);918 919 return 0;920}921 922static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)923{924 int res = 0;925 int min = 0, med;926 927 if (val < tab[min].read)928 res = tab[min].real;929 else if (val >= tab[max].read)930 res = tab[max].real;931 else {932 while ((max - min) > 1) {933 med = (max + min) / 2;934 if (val >= tab[min].read && val < tab[med].read)935 max = med;936 else937 min = med;938 }939 res = ((val - tab[min].read) *940 (tab[max].real - tab[min].real) /941 (tab[max].read - tab[min].read)) +942 tab[min].real;943 }944 945 return res;946}947 948static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)949{950 struct stb0899_state *state = fe->demodulator_priv;951 struct stb0899_internal *internal = &state->internal;952 953 int val;954 u32 reg;955 *strength = 0;956 switch (state->delsys) {957 case SYS_DVBS:958 case SYS_DSS:959 if (internal->lock) {960 reg = stb0899_read_reg(state, STB0899_VSTATUS);961 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {962 963 reg = stb0899_read_reg(state, STB0899_AGCIQIN);964 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);965 966 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);967 *strength += 750;968 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",969 val & 0xff, *strength);970 }971 }972 break;973 case SYS_DVBS2:974 if (internal->lock) {975 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN);976 val = STB0899_GETFIELD(IF_AGC_GAIN, reg);977 978 *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);979 *strength += 950;980 dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",981 val & 0x3fff, *strength);982 }983 break;984 default:985 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");986 return -EINVAL;987 }988 989 return 0;990}991 992static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)993{994 struct stb0899_state *state = fe->demodulator_priv;995 struct stb0899_internal *internal = &state->internal;996 997 unsigned int val, quant, quantn = -1, est, estn = -1;998 u8 buf[2];999 u32 reg;1000 1001 *snr = 0;1002 reg = stb0899_read_reg(state, STB0899_VSTATUS);1003 switch (state->delsys) {1004 case SYS_DVBS:1005 case SYS_DSS:1006 if (internal->lock) {1007 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {1008 1009 stb0899_read_regs(state, STB0899_NIRM, buf, 2);1010 val = MAKEWORD16(buf[0], buf[1]);1011 1012 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);1013 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",1014 buf[0], buf[1], val, *snr);1015 }1016 }1017 break;1018 case SYS_DVBS2:1019 if (internal->lock) {1020 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);1021 quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);1022 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);1023 est = STB0899_GETFIELD(ESN0_EST, reg);1024 if (est == 1)1025 val = 301; /* C/N = 30.1 dB */1026 else if (est == 2)1027 val = 270; /* C/N = 27.0 dB */1028 else {1029 /* quantn = 100 * log(quant^2) */1030 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);1031 /* estn = 100 * log(est) */1032 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);1033 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */1034 val = (quantn - estn) / 10;1035 }1036 *snr = val;1037 dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",1038 quant, quantn, est, estn, val);1039 }1040 break;1041 default:1042 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");1043 return -EINVAL;1044 }1045 1046 return 0;1047}1048 1049static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)1050{1051 struct stb0899_state *state = fe->demodulator_priv;1052 struct stb0899_internal *internal = &state->internal;1053 u8 reg;1054 *status = 0;1055 1056 switch (state->delsys) {1057 case SYS_DVBS:1058 case SYS_DSS:1059 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");1060 if (internal->lock) {1061 reg = stb0899_read_reg(state, STB0899_VSTATUS);1062 if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {1063 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");1064 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;1065 1066 reg = stb0899_read_reg(state, STB0899_PLPARM);1067 if (STB0899_GETFIELD(VITCURPUN, reg)) {1068 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");1069 *status |= FE_HAS_VITERBI | FE_HAS_SYNC;1070 /* post process event */1071 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);1072 }1073 }1074 }1075 break;1076 case SYS_DVBS2:1077 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");1078 if (internal->lock) {1079 reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);1080 if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {1081 *status |= FE_HAS_CARRIER;1082 dprintk(state->verbose, FE_DEBUG, 1,1083 "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");1084 1085 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);1086 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {1087 *status |= FE_HAS_LOCK;1088 dprintk(state->verbose, FE_DEBUG, 1,1089 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");1090 1091 }1092 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {1093 *status |= FE_HAS_VITERBI;1094 dprintk(state->verbose, FE_DEBUG, 1,1095 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");1096 }1097 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {1098 *status |= FE_HAS_SYNC;1099 dprintk(state->verbose, FE_DEBUG, 1,1100 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");1101 /* post process event */1102 stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);1103 }1104 }1105 }1106 break;1107 default:1108 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");1109 return -EINVAL;1110 }1111 return 0;1112}1113 1114/*1115 * stb0899_get_error1116 * viterbi error for DVB-S/DSS1117 * packet error for DVB-S21118 * Bit Error Rate or Packet Error Rate * 10 ^ 71119 */1120static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)1121{1122 struct stb0899_state *state = fe->demodulator_priv;1123 struct stb0899_internal *internal = &state->internal;1124 1125 u8 lsb, msb;1126 1127 *ber = 0;1128 1129 switch (state->delsys) {1130 case SYS_DVBS:1131 case SYS_DSS:1132 if (internal->lock) {1133 lsb = stb0899_read_reg(state, STB0899_ECNT1L);1134 msb = stb0899_read_reg(state, STB0899_ECNT1M);1135 *ber = MAKEWORD16(msb, lsb);1136 /* Viterbi Check */1137 if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {1138 /* Error Rate */1139 *ber *= 9766;1140 /* ber = ber * 10 ^ 7 */1141 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));1142 *ber /= 8;1143 }1144 }1145 break;1146 case SYS_DVBS2:1147 if (internal->lock) {1148 lsb = stb0899_read_reg(state, STB0899_ECNT1L);1149 msb = stb0899_read_reg(state, STB0899_ECNT1M);1150 *ber = MAKEWORD16(msb, lsb);1151 /* ber = ber * 10 ^ 7 */1152 *ber *= 10000000;1153 *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));1154 }1155 break;1156 default:1157 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");1158 return -EINVAL;1159 }1160 1161 return 0;1162}1163 1164static int stb0899_set_voltage(struct dvb_frontend *fe,1165 enum fe_sec_voltage voltage)1166{1167 struct stb0899_state *state = fe->demodulator_priv;1168 1169 switch (voltage) {1170 case SEC_VOLTAGE_13:1171 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);1172 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);1173 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);1174 break;1175 case SEC_VOLTAGE_18:1176 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);1177 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);1178 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);1179 break;1180 case SEC_VOLTAGE_OFF:1181 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);1182 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);1183 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);1184 break;1185 default:1186 return -EINVAL;1187 }1188 1189 return 0;1190}1191 1192static int stb0899_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)1193{1194 struct stb0899_state *state = fe->demodulator_priv;1195 struct stb0899_internal *internal = &state->internal;1196 1197 u8 div, reg;1198 1199 /* wait for diseqc idle */1200 if (stb0899_wait_diseqc_txidle(state, 100) < 0)1201 return -ETIMEDOUT;1202 1203 switch (tone) {1204 case SEC_TONE_ON:1205 div = (internal->master_clk / 100) / 5632;1206 div = (div + 5) / 10;1207 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);1208 reg = stb0899_read_reg(state, STB0899_ACRPRESC);1209 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);1210 stb0899_write_reg(state, STB0899_ACRPRESC, reg);1211 stb0899_write_reg(state, STB0899_ACRDIV1, div);1212 break;1213 case SEC_TONE_OFF:1214 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);1215 break;1216 default:1217 return -EINVAL;1218 }1219 return 0;1220}1221 1222int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)1223{1224 int i2c_stat;1225 struct stb0899_state *state = fe->demodulator_priv;1226 1227 i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);1228 if (i2c_stat < 0)1229 goto err;1230 1231 if (enable) {1232 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");1233 i2c_stat |= STB0899_I2CTON;1234 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)1235 goto err;1236 } else {1237 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");1238 i2c_stat &= ~STB0899_I2CTON;1239 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)1240 goto err;1241 }1242 return 0;1243err:1244 dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");1245 return -EREMOTEIO;1246}1247 1248 1249static inline void CONVERT32(u32 x, char *str)1250{1251 *str++ = (x >> 24) & 0xff;1252 *str++ = (x >> 16) & 0xff;1253 *str++ = (x >> 8) & 0xff;1254 *str++ = (x >> 0) & 0xff;1255 *str = '\0';1256}1257 1258static int stb0899_get_dev_id(struct stb0899_state *state)1259{1260 u8 chip_id, release;1261 u16 id;1262 u32 demod_ver = 0, fec_ver = 0;1263 char demod_str[5] = { 0 };1264 char fec_str[5] = { 0 };1265 1266 id = stb0899_read_reg(state, STB0899_DEV_ID);1267 dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);1268 chip_id = STB0899_GETFIELD(CHIP_ID, id);1269 release = STB0899_GETFIELD(CHIP_REL, id);1270 1271 dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",1272 chip_id, release);1273 1274 CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);1275 1276 demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);1277 dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);1278 CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);1279 fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);1280 if (!chip_id) {1281 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");1282 1283 return -ENODEV;1284 }1285 dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);1286 1287 return 0;1288}1289 1290static void stb0899_set_delivery(struct stb0899_state *state)1291{1292 u8 reg;1293 u8 stop_clk[2];1294 1295 stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);1296 stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);1297 1298 switch (state->delsys) {1299 case SYS_DVBS:1300 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");1301 /* FECM/Viterbi ON */1302 reg = stb0899_read_reg(state, STB0899_FECM);1303 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);1304 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);1305 stb0899_write_reg(state, STB0899_FECM, reg);1306 1307 stb0899_write_reg(state, STB0899_RSULC, 0xb1);1308 stb0899_write_reg(state, STB0899_TSULC, 0x40);1309 stb0899_write_reg(state, STB0899_RSLLC, 0x42);1310 stb0899_write_reg(state, STB0899_TSLPL, 0x12);1311 1312 reg = stb0899_read_reg(state, STB0899_TSTRES);1313 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);1314 stb0899_write_reg(state, STB0899_TSTRES, reg);1315 1316 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);1317 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);1318 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);1319 1320 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);1321 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);1322 1323 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);1324 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);1325 1326 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);1327 break;1328 case SYS_DVBS2:1329 /* FECM/Viterbi OFF */1330 reg = stb0899_read_reg(state, STB0899_FECM);1331 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);1332 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);1333 stb0899_write_reg(state, STB0899_FECM, reg);1334 1335 stb0899_write_reg(state, STB0899_RSULC, 0xb1);1336 stb0899_write_reg(state, STB0899_TSULC, 0x42);1337 stb0899_write_reg(state, STB0899_RSLLC, 0x40);1338 stb0899_write_reg(state, STB0899_TSLPL, 0x02);1339 1340 reg = stb0899_read_reg(state, STB0899_TSTRES);1341 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);1342 stb0899_write_reg(state, STB0899_TSTRES, reg);1343 1344 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);1345 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);1346 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);1347 1348 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);1349 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);1350 1351 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);1352 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);1353 1354 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);1355 break;1356 case SYS_DSS:1357 /* FECM/Viterbi ON */1358 reg = stb0899_read_reg(state, STB0899_FECM);1359 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);1360 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);1361 stb0899_write_reg(state, STB0899_FECM, reg);1362 1363 stb0899_write_reg(state, STB0899_RSULC, 0xa1);1364 stb0899_write_reg(state, STB0899_TSULC, 0x61);1365 stb0899_write_reg(state, STB0899_RSLLC, 0x42);1366 1367 reg = stb0899_read_reg(state, STB0899_TSTRES);1368 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);1369 stb0899_write_reg(state, STB0899_TSTRES, reg);1370 1371 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);1372 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);1373 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);1374 1375 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);1376 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);1377 1378 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);1379 1380 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);1381 break;1382 default:1383 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");1384 break;1385 }1386 STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);1387 stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);1388}1389 1390/*1391 * stb0899_set_iterations1392 * set the LDPC iteration scale function1393 */1394static void stb0899_set_iterations(struct stb0899_state *state)1395{1396 struct stb0899_internal *internal = &state->internal;1397 struct stb0899_config *config = state->config;1398 1399 s32 iter_scale;1400 u32 reg;1401 1402 iter_scale = 17 * (internal->master_clk / 1000);1403 iter_scale += 410000;1404 iter_scale /= (internal->srate / 1000000);1405 iter_scale /= 1000;1406 1407 if (iter_scale > config->ldpc_max_iter)1408 iter_scale = config->ldpc_max_iter;1409 1410 reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);1411 STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);1412 stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);1413}1414 1415static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)1416{1417 struct stb0899_state *state = fe->demodulator_priv;1418 struct stb0899_params *i_params = &state->params;1419 struct stb0899_internal *internal = &state->internal;1420 struct stb0899_config *config = state->config;1421 struct dtv_frontend_properties *props = &fe->dtv_property_cache;1422 1423 u32 SearchRange, gain;1424 1425 i_params->freq = props->frequency;1426 i_params->srate = props->symbol_rate;1427 state->delsys = props->delivery_system;1428 dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);1429 1430 SearchRange = 10000000;1431 dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);1432 /* checking Search Range is meaningless for a fixed 3 Mhz */1433 if (INRANGE(i_params->srate, 1000000, 45000000)) {1434 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");1435 stb0899_set_delivery(state);1436 1437 if (state->config->tuner_set_rfsiggain) {1438 if (internal->srate > 15000000)1439 gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */1440 else if (internal->srate > 5000000)1441 gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */1442 else1443 gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */1444 state->config->tuner_set_rfsiggain(fe, gain);1445 }1446 1447 if (i_params->srate <= 5000000)1448 stb0899_set_mclk(state, config->lo_clk);1449 else1450 stb0899_set_mclk(state, config->hi_clk);1451 1452 switch (state->delsys) {1453 case SYS_DVBS:1454 case SYS_DSS:1455 dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");1456 internal->freq = i_params->freq;1457 internal->srate = i_params->srate;1458 /*1459 * search = user search range +1460 * 500Khz +1461 * 2 * Tuner_step_size +1462 * 10% of the symbol rate1463 */1464 internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5);1465 internal->derot_percent = 30;1466 1467 /* What to do for tuners having no bandwidth setup ? */1468 /* enable tuner I/O */1469 stb0899_i2c_gate_ctrl(&state->frontend, 1);1470 1471 if (state->config->tuner_set_bandwidth)1472 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);1473 if (state->config->tuner_get_bandwidth)1474 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);1475 1476 /* disable tuner I/O */1477 stb0899_i2c_gate_ctrl(&state->frontend, 0);1478 1479 /* Set DVB-S1 AGC */1480 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);1481 1482 /* Run the search algorithm */1483 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");1484 if (stb0899_dvbs_algo(state) == RANGEOK) {1485 internal->lock = 1;1486 dprintk(state->verbose, FE_DEBUG, 1,1487 "-------------------------------------> DVB-S LOCK !");1488 1489// stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */1490// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);1491// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);1492// dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);1493// dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);1494 1495 return DVBFE_ALGO_SEARCH_SUCCESS;1496 } else {1497 internal->lock = 0;1498 1499 return DVBFE_ALGO_SEARCH_FAILED;1500 }1501 break;1502 case SYS_DVBS2:1503 internal->freq = i_params->freq;1504 internal->srate = i_params->srate;1505 internal->srch_range = SearchRange;1506 1507 /* enable tuner I/O */1508 stb0899_i2c_gate_ctrl(&state->frontend, 1);1509 1510 if (state->config->tuner_set_bandwidth)1511 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));1512 if (state->config->tuner_get_bandwidth)1513 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);1514 1515 /* disable tuner I/O */1516 stb0899_i2c_gate_ctrl(&state->frontend, 0);1517 1518// pParams->SpectralInv = pSearch->IQ_Inversion;1519 1520 /* Set DVB-S2 AGC */1521 stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);1522 1523 /* Set IterScale =f(MCLK,SYMB) */1524 stb0899_set_iterations(state);1525 1526 /* Run the search algorithm */1527 dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");1528 if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) {1529 internal->lock = 1;1530 dprintk(state->verbose, FE_DEBUG, 1,1531 "-------------------------------------> DVB-S2 LOCK !");1532 1533// stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */1534// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);1535// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);1536 1537 return DVBFE_ALGO_SEARCH_SUCCESS;1538 } else {1539 internal->lock = 0;1540 1541 return DVBFE_ALGO_SEARCH_FAILED;1542 }1543 break;1544 default:1545 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");1546 return DVBFE_ALGO_SEARCH_INVALID;1547 }1548 }1549 1550 return DVBFE_ALGO_SEARCH_ERROR;1551}1552 1553static int stb0899_get_frontend(struct dvb_frontend *fe,1554 struct dtv_frontend_properties *p)1555{1556 struct stb0899_state *state = fe->demodulator_priv;1557 struct stb0899_internal *internal = &state->internal;1558 1559 dprintk(state->verbose, FE_DEBUG, 1, "Get params");1560 p->symbol_rate = internal->srate;1561 p->frequency = internal->freq;1562 1563 return 0;1564}1565 1566static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)1567{1568 return DVBFE_ALGO_CUSTOM;1569}1570 1571static const struct dvb_frontend_ops stb0899_ops = {1572 .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },1573 .info = {1574 .name = "STB0899 Multistandard",1575 .frequency_min_hz = 950 * MHz,1576 .frequency_max_hz = 2150 * MHz,1577 .symbol_rate_min = 5000000,1578 .symbol_rate_max = 45000000,1579 1580 .caps = FE_CAN_INVERSION_AUTO |1581 FE_CAN_FEC_AUTO |1582 FE_CAN_2G_MODULATION |1583 FE_CAN_QPSK1584 },1585 1586 .detach = stb0899_detach,1587 .release = stb0899_release,1588 .init = stb0899_init,1589 .sleep = stb0899_sleep,1590// .wakeup = stb0899_wakeup,1591 1592 .i2c_gate_ctrl = stb0899_i2c_gate_ctrl,1593 1594 .get_frontend_algo = stb0899_frontend_algo,1595 .search = stb0899_search,1596 .get_frontend = stb0899_get_frontend,1597 1598 1599 .read_status = stb0899_read_status,1600 .read_snr = stb0899_read_snr,1601 .read_signal_strength = stb0899_read_signal_strength,1602 .read_ber = stb0899_read_ber,1603 1604 .set_voltage = stb0899_set_voltage,1605 .set_tone = stb0899_set_tone,1606 1607 .diseqc_send_master_cmd = stb0899_send_diseqc_msg,1608 .diseqc_recv_slave_reply = stb0899_recv_slave_reply,1609 .diseqc_send_burst = stb0899_send_diseqc_burst,1610};1611 1612struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)1613{1614 struct stb0899_state *state = NULL;1615 1616 state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);1617 if (state == NULL)1618 goto error;1619 1620 state->verbose = &verbose;1621 state->config = config;1622 state->i2c = i2c;1623 state->frontend.ops = stb0899_ops;1624 state->frontend.demodulator_priv = state;1625 /* use configured inversion as default -- we'll later autodetect inversion */1626 state->internal.inversion = config->inversion;1627 1628 stb0899_wakeup(&state->frontend);1629 if (stb0899_get_dev_id(state) == -ENODEV) {1630 printk("%s: Exiting .. !\n", __func__);1631 goto error;1632 }1633 1634 printk("%s: Attaching STB0899 \n", __func__);1635 return &state->frontend;1636 1637error:1638 kfree(state);1639 return NULL;1640}1641EXPORT_SYMBOL_GPL(stb0899_attach);1642MODULE_PARM_DESC(verbose, "Set Verbosity level");1643MODULE_AUTHOR("Manu Abraham");1644MODULE_DESCRIPTION("STB0899 Multi-Std frontend");1645MODULE_LICENSE("GPL");1646