/* * Support for LGDT3306A - 8VSB/QAM-B * * Copyright (C) 2013 Fred Richter * - driver structure based on lgdt3305.[ch] by Michael Krufky * - code based on LG3306_V0.35 API by LG Electronics Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include #include #include "dvb_math.h" #include "lgdt3306a.h" static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))"); #define DBG_INFO 1 #define DBG_REG 2 #define DBG_DUMP 4 /* FGR - comment out to remove dump code */ #define lg_printk(kern, fmt, arg...) \ printk(kern "%s(): " fmt, __func__, ##arg) #define lg_info(fmt, arg...) printk(KERN_INFO "lgdt3306a: " fmt, ##arg) #define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg) #define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg) #define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \ lg_printk(KERN_DEBUG, fmt, ##arg) #define lg_reg(fmt, arg...) if (debug & DBG_REG) \ lg_printk(KERN_DEBUG, fmt, ##arg) #define lg_chkerr(ret) \ ({ \ int __ret; \ __ret = (ret < 0); \ if (__ret) \ lg_err("error %d on line %d\n", ret, __LINE__); \ __ret; \ }) struct lgdt3306a_state { struct i2c_adapter *i2c_adap; const struct lgdt3306a_config *cfg; struct dvb_frontend frontend; fe_modulation_t current_modulation; u32 current_frequency; u32 snr; }; /* ----------------------------------------------- LG3306A Register Usage (LG does not really name the registers, so this code does not either) 0000 -> 00FF Common control and status 1000 -> 10FF Synchronizer control and status 1F00 -> 1FFF Smart Antenna control and status 2100 -> 21FF VSB Equalizer control and status 2800 -> 28FF QAM Equalizer control and status 3000 -> 30FF FEC control and status ---------------------------------------------- */ typedef enum{ LG3306_UNLOCK = 0x00, LG3306_LOCK = 0x01, LG3306_UNKNOWN_LOCK = 0xFF }LG3306_LOCK_STATUS; typedef enum{ LG3306_NL_INIT = 0x00, LG3306_NL_PROCESS = 0x01, LG3306_NL_LOCK = 0x02, LG3306_NL_FAIL = 0x03, LG3306_NL_UNKNOWN = 0xFF }LG3306_NEVERLOCK_STATUS; typedef enum{ LG3306_VSB = 0x00, LG3306_QAM64 = 0x01, LG3306_QAM256 = 0x02, LG3306_UNKNOWN_MODE = 0xFF }LG3306_MODULATION; typedef enum { LG3306_SYNC_LOCK, LG3306_FEC_LOCK, LG3306_TR_LOCK, LG3306_AGC_LOCK, } LG3306_LOCK_CHECK; #ifdef DBG_DUMP static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state); static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state); #endif static int lgdt3306a_write_reg(struct lgdt3306a_state *state, u16 reg, u8 val) { int ret; u8 buf[] = { reg >> 8, reg & 0xff, val }; struct i2c_msg msg = { .addr = state->cfg->i2c_addr, .flags = 0, .buf = buf, .len = 3, }; lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val); ret = i2c_transfer(state->i2c_adap, &msg, 1); if (ret != 1) { lg_err("error (addr %02x %02x <- %02x, err = %i)\n", msg.buf[0], msg.buf[1], msg.buf[2], ret); if (ret < 0) return ret; else return -EREMOTEIO; } return 0; } static int lgdt3306a_read_reg(struct lgdt3306a_state *state, u16 reg, u8 *val) { int ret; u8 reg_buf[] = { reg >> 8, reg & 0xff }; struct i2c_msg msg[] = { { .addr = state->cfg->i2c_addr, .flags = 0, .buf = reg_buf, .len = 2 }, { .addr = state->cfg->i2c_addr, .flags = I2C_M_RD, .buf = val, .len = 1 }, }; ret = i2c_transfer(state->i2c_adap, msg, 2); if (ret != 2) { lg_err("error (addr %02x reg %04x error (ret == %i)\n", state->cfg->i2c_addr, reg, ret); if (ret < 0) return ret; else return -EREMOTEIO; } lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val); return 0; } #define read_reg(state, reg) \ ({ \ u8 __val; \ int ret = lgdt3306a_read_reg(state, reg, &__val); \ if (lg_chkerr(ret)) \ __val = 0; \ __val; \ }) static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state, u16 reg, int bit, int onoff) { u8 val; int ret; lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff); ret = lgdt3306a_read_reg(state, reg, &val); if (lg_chkerr(ret)) goto fail; val &= ~(1 << bit); val |= (onoff & 1) << bit; ret = lgdt3306a_write_reg(state, reg, val); lg_chkerr(ret); fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_soft_reset(struct lgdt3306a_state *state) { int ret; lg_dbg("\n"); ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); if (lg_chkerr(ret)) goto fail; msleep(20); ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state, enum lgdt3306a_mpeg_mode mode) { u8 val; int ret; lg_dbg("(%d)\n", mode); /* transport packet format */ ret = lgdt3306a_set_reg_bit(state, 0x0071, 7, mode == LGDT3306A_MPEG_PARALLEL?1:0); /* TPSENB=0x80 */ if (lg_chkerr(ret)) goto fail; /* start of packet signal duration */ ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0); /* TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val |= 0x10; /* TPCLKSUPB=0x10 */ if (mode == LGDT3306A_MPEG_PARALLEL) val &= ~0x10; ret = lgdt3306a_write_reg(state, 0x0070, val); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state, enum lgdt3306a_tp_clock_edge edge, enum lgdt3306a_tp_valid_polarity valid) { u8 val; int ret; lg_dbg("edge=%d, valid=%d\n", edge, valid); ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val &= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */ if (edge == LGDT3306A_TPCLK_RISING_EDGE) val |= 0x04; if (valid == LGDT3306A_TP_VALID_HIGH) val |= 0x02; ret = lgdt3306a_write_reg(state, 0x0070, val); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state, int mode) { u8 val; int ret; lg_dbg("(%d)\n", mode); if (mode) { ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val &= ~0xA8; /* Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20, TPDATAOUTEN=0x08 */ ret = lgdt3306a_write_reg(state, 0x0070, val); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1); /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */ if (lg_chkerr(ret)) goto fail; } else { ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0); /* enable IFAGC pin */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val |= 0xA8; /* enable bus */ ret = lgdt3306a_write_reg(state, 0x0070, val); if (lg_chkerr(ret)) goto fail; } fail: return ret; } static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) { struct lgdt3306a_state *state = fe->demodulator_priv; lg_dbg("acquire=%d\n", acquire); return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1); } static int lgdt3306a_power(struct lgdt3306a_state *state, int mode) { int ret; lg_dbg("(%d)\n", mode); if (mode == 0) { ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); /* into reset */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0); /* power down */ if (lg_chkerr(ret)) goto fail; } else { ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); /* out of reset */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1); /* power up */ if (lg_chkerr(ret)) goto fail; } #ifdef DBG_DUMP lgdt3306a_DumpAllRegs(state); #endif fail: return ret; } static int lgdt3306a_set_vsb(struct lgdt3306a_state *state) { u8 val; int ret; lg_dbg("\n"); /* 0. Spectrum inversion detection manual; spectrum inverted */ ret = lgdt3306a_read_reg(state, 0x0002, &val); val &= 0xF7; /* SPECINVAUTO Off */ val |= 0x04; /* SPECINV On */ ret = lgdt3306a_write_reg(state, 0x0002, val); if (lg_chkerr(ret)) goto fail; /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ ret = lgdt3306a_write_reg(state, 0x0008, 0x80); if (lg_chkerr(ret)) goto fail; /* 2. Bandwidth mode for VSB(6MHz) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xE3; val |= 0x0C; /* STDOPDETTMODE[2:0]=3 */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3. QAM mode detection mode(None) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xFC; /* STDOPDETCMODE[1:0]=0 */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 4. ADC sampling frequency rate(2x sampling) */ ret = lgdt3306a_read_reg(state, 0x000D, &val); val &= 0xBF; /* SAMPLING4XFEN=0 */ ret = lgdt3306a_write_reg(state, 0x000D, val); if (lg_chkerr(ret)) goto fail; #if 0 /* FGR - disable any AICC filtering, testing only */ ret = lgdt3306a_write_reg(state, 0x0024, 0x00); if (lg_chkerr(ret)) goto fail; /* AICCFIXFREQ0 NT N-1(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x002E, 0x00); ret = lgdt3306a_write_reg(state, 0x002F, 0x00); ret = lgdt3306a_write_reg(state, 0x0030, 0x00); /* AICCFIXFREQ1 NT N-1(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x002B, 0x00); ret = lgdt3306a_write_reg(state, 0x002C, 0x00); ret = lgdt3306a_write_reg(state, 0x002D, 0x00); /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x0028, 0x00); ret = lgdt3306a_write_reg(state, 0x0029, 0x00); ret = lgdt3306a_write_reg(state, 0x002A, 0x00); /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x0025, 0x00); ret = lgdt3306a_write_reg(state, 0x0026, 0x00); ret = lgdt3306a_write_reg(state, 0x0027, 0x00); #else /* FGR - this works well for HVR-1955,1975 */ /* 5. AICCOPMODE NT N-1 Adj. */ ret = lgdt3306a_write_reg(state, 0x0024, 0x5A); if (lg_chkerr(ret)) goto fail; /* AICCFIXFREQ0 NT N-1(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x002E, 0x5A); ret = lgdt3306a_write_reg(state, 0x002F, 0x00); ret = lgdt3306a_write_reg(state, 0x0030, 0x00); /* AICCFIXFREQ1 NT N-1(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x002B, 0x36); ret = lgdt3306a_write_reg(state, 0x002C, 0x00); ret = lgdt3306a_write_reg(state, 0x002D, 0x00); /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x0028, 0x2A); ret = lgdt3306a_write_reg(state, 0x0029, 0x00); ret = lgdt3306a_write_reg(state, 0x002A, 0x00); /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x0025, 0x06); ret = lgdt3306a_write_reg(state, 0x0026, 0x00); ret = lgdt3306a_write_reg(state, 0x0027, 0x00); #endif ret = lgdt3306a_read_reg(state, 0x001E, &val); val &= 0x0F; val |= 0xA0; ret = lgdt3306a_write_reg(state, 0x001E, val); ret = lgdt3306a_write_reg(state, 0x0022, 0x08); ret = lgdt3306a_write_reg(state, 0x0023, 0xFF); ret = lgdt3306a_read_reg(state, 0x211F, &val); val &= 0xEF; ret = lgdt3306a_write_reg(state, 0x211F, val); ret = lgdt3306a_write_reg(state, 0x2173, 0x01); ret = lgdt3306a_read_reg(state, 0x1061, &val); val &= 0xF8; val |= 0x04; ret = lgdt3306a_write_reg(state, 0x1061, val); ret = lgdt3306a_read_reg(state, 0x103D, &val); val &= 0xCF; ret = lgdt3306a_write_reg(state, 0x103D, val); ret = lgdt3306a_write_reg(state, 0x2122, 0x40); ret = lgdt3306a_read_reg(state, 0x2141, &val); val &= 0x3F; ret = lgdt3306a_write_reg(state, 0x2141, val); ret = lgdt3306a_read_reg(state, 0x2135, &val); val &= 0x0F; val |= 0x70; ret = lgdt3306a_write_reg(state, 0x2135, val); ret = lgdt3306a_read_reg(state, 0x0003, &val); val &= 0xF7; ret = lgdt3306a_write_reg(state, 0x0003, val); ret = lgdt3306a_read_reg(state, 0x001C, &val); val &= 0x7F; ret = lgdt3306a_write_reg(state, 0x001C, val); /* 6. EQ step size */ ret = lgdt3306a_read_reg(state, 0x2179, &val); val &= 0xF8; ret = lgdt3306a_write_reg(state, 0x2179, val); ret = lgdt3306a_read_reg(state, 0x217A, &val); val &= 0xF8; ret = lgdt3306a_write_reg(state, 0x217A, val); /* 7. Reset */ ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; lg_dbg("complete\n"); fail: return ret; } static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation) { u8 val; int ret; lg_dbg("modulation=%d\n", modulation); /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ ret = lgdt3306a_write_reg(state, 0x0008, 0x08); if (lg_chkerr(ret)) goto fail; /* 1a. Spectrum inversion detection to Auto */ ret = lgdt3306a_read_reg(state, 0x0002, &val); val &= 0xFB; /* SPECINV Off */ val |= 0x08; /* SPECINVAUTO On */ ret = lgdt3306a_write_reg(state, 0x0002, val); if (lg_chkerr(ret)) goto fail; /* 2. Bandwidth mode for QAM */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xE3; /* STDOPDETTMODE[2:0]=0 VSB Off */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3. : 64QAM/256QAM detection(manual, auto) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xFC; val |= 0x02; /* STDOPDETCMODE[1:0]=1=Manual 2=Auto */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3a. : 64QAM/256QAM selection for manual */ ret = lgdt3306a_read_reg(state, 0x101a, &val); val &= 0xF8; if (modulation == QAM_64) val |= 0x02; /* QMDQMODE[2:0]=2=QAM64 */ else val |= 0x04; /* QMDQMODE[2:0]=4=QAM256 */ ret = lgdt3306a_write_reg(state, 0x101a, val); if (lg_chkerr(ret)) goto fail; /* 4. ADC sampling frequency rate(4x sampling) */ ret = lgdt3306a_read_reg(state, 0x000D, &val); val &= 0xBF; val |= 0x40; /* SAMPLING4XFEN=1 */ ret = lgdt3306a_write_reg(state, 0x000D, val); if (lg_chkerr(ret)) goto fail; /* 5. No AICC operation in QAM mode */ ret = lgdt3306a_read_reg(state, 0x0024, &val); val &= 0x00; ret = lgdt3306a_write_reg(state, 0x0024, val); if (lg_chkerr(ret)) goto fail; /* 6. Reset */ ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; lg_dbg("complete\n"); fail: return ret; } static int lgdt3306a_set_modulation(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { int ret; lg_dbg("\n"); switch (p->modulation) { case VSB_8: ret = lgdt3306a_set_vsb(state); break; case QAM_64: ret = lgdt3306a_set_qam(state, QAM_64); break; case QAM_256: ret = lgdt3306a_set_qam(state, QAM_256); break; default: return -EINVAL; } if (lg_chkerr(ret)) goto fail; state->current_modulation = p->modulation; fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_agc_setup(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { /* TODO: anything we want to do here??? */ lg_dbg("\n"); switch (p->modulation) { case VSB_8: break; case QAM_64: case QAM_256: break; default: return -EINVAL; } return 0; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_set_inversion(struct lgdt3306a_state *state, int inversion) { int ret; lg_dbg("(%d)\n", inversion); ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion ? 1 : 0); return ret; } static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state, int enabled) { int ret; lg_dbg("(%d)\n", enabled); /* 0=Manual 1=Auto(QAM only) */ ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled);/* SPECINVAUTO=0x04 */ return ret; } static int lgdt3306a_spectral_inversion(struct lgdt3306a_state *state, struct dtv_frontend_properties *p, int inversion) { int ret = 0; lg_dbg("(%d)\n", inversion); #if 0 /* FGR - spectral_inversion defaults already set for VSB and QAM; can enable later if desired */ ret = lgdt3306a_set_inversion(state, inversion); switch (p->modulation) { case VSB_8: ret = lgdt3306a_set_inversion_auto(state, 0); /* Manual only for VSB */ break; case QAM_64: case QAM_256: ret = lgdt3306a_set_inversion_auto(state, 1); /* Auto ok for QAM */ break; default: ret = -EINVAL; } #endif return ret; } static int lgdt3306a_set_if(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { int ret; u16 if_freq_khz; u8 nco1, nco2; switch (p->modulation) { case VSB_8: if_freq_khz = state->cfg->vsb_if_khz; break; case QAM_64: case QAM_256: if_freq_khz = state->cfg->qam_if_khz; break; default: return -EINVAL; } switch (if_freq_khz) { default: lg_warn("IF=%d KHz is not supportted, 3250 assumed\n", if_freq_khz); /* fallthrough */ case 3250: /* 3.25Mhz */ nco1 = 0x34; nco2 = 0x00; break; case 3500: /* 3.50Mhz */ nco1 = 0x38; nco2 = 0x00; break; case 4000: /* 4.00Mhz */ nco1 = 0x40; nco2 = 0x00; break; case 5000: /* 5.00Mhz */ nco1 = 0x50; nco2 = 0x00; break; case 5380: /* 5.38Mhz */ nco1 = 0x56; nco2 = 0x14; break; } ret = lgdt3306a_write_reg(state, 0x0010, nco1); ret = lgdt3306a_write_reg(state, 0x0011, nco2); lg_dbg("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2); return 0; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) { struct lgdt3306a_state *state = fe->demodulator_priv; if (state->cfg->deny_i2c_rptr) { lg_dbg("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr); return 0; } lg_dbg("(%d)\n", enable); return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable ? 0 : 1); /* NI2CRPTEN=0x80 */ } static int lgdt3306a_sleep(struct lgdt3306a_state *state) { int ret; lg_dbg("\n"); state->current_frequency = -1; /* force re-tune, when we wake */ ret = lgdt3306a_mpeg_tristate(state, 1); /* disable data bus */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_power(state, 0); /* power down */ lg_chkerr(ret); fail: return 0; } static int lgdt3306a_fe_sleep(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; return lgdt3306a_sleep(state); } static int lgdt3306a_init(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; u8 val; int ret; lg_dbg("\n"); /* 1. Normal operation mode */ ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); /* SIMFASTENB=0x01 */ if (lg_chkerr(ret)) goto fail; /* 2. Spectrum inversion auto detection (Not valid for VSB) */ ret = lgdt3306a_set_inversion_auto(state, 0); if (lg_chkerr(ret)) goto fail; /* 3. Spectrum inversion(According to the tuner configuration) */ ret = lgdt3306a_set_inversion(state, 1); if (lg_chkerr(ret)) goto fail; /* 4. Peak-to-peak voltage of ADC input signal */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1); /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */ if (lg_chkerr(ret)) goto fail; /* 5. ADC output data capture clock phase */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0); /* 0=same phase as ADC clock */ if (lg_chkerr(ret)) goto fail; /* 5a. ADC sampling clock source */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0); /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */ if (lg_chkerr(ret)) goto fail; /* 6. Automatic PLL set */ ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0); /* PLLSETAUTO=0x40; 0=off */ if (lg_chkerr(ret)) goto fail; if (state->cfg->xtalMHz == 24) { /* 24MHz */ /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */ ret = lgdt3306a_read_reg(state, 0x0005, &val); if (lg_chkerr(ret)) goto fail; val &= 0xC0; val |= 0x25; ret = lgdt3306a_write_reg(state, 0x0005, val); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_write_reg(state, 0x0006, 0x64); if (lg_chkerr(ret)) goto fail; /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */ ret = lgdt3306a_read_reg(state, 0x000D, &val); if (lg_chkerr(ret)) goto fail; val &= 0xC0; val |= 0x18; ret = lgdt3306a_write_reg(state, 0x000D, val); if (lg_chkerr(ret)) goto fail; } else if (state->cfg->xtalMHz == 25) { /* 25MHz */ /* 7. Frequency for PLL output */ ret = lgdt3306a_read_reg(state, 0x0005, &val); if (lg_chkerr(ret)) goto fail; val &= 0xC0; val |= 0x25; ret = lgdt3306a_write_reg(state, 0x0005, val); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_write_reg(state, 0x0006, 0x64); if (lg_chkerr(ret)) goto fail; /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */ ret = lgdt3306a_read_reg(state, 0x000D, &val); if (lg_chkerr(ret)) goto fail; val &= 0xC0; val |= 0x19; ret = lgdt3306a_write_reg(state, 0x000D, val); if (lg_chkerr(ret)) goto fail; } else { lg_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz); } #if 0 ret = lgdt3306a_write_reg(state, 0x000E, 0x00); ret = lgdt3306a_write_reg(state, 0x000F, 0x00); #endif /* 9. Center frequency of input signal of ADC */ ret = lgdt3306a_write_reg(state, 0x0010, 0x34); /* 3.25MHz */ ret = lgdt3306a_write_reg(state, 0x0011, 0x00); /* 10. Fixed gain error value */ ret = lgdt3306a_write_reg(state, 0x0014, 0); /* gain error=0 */ /* 10a. VSB TR BW gear shift initial step */ ret = lgdt3306a_read_reg(state, 0x103C, &val); val &= 0x0F; val |= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */ ret = lgdt3306a_write_reg(state, 0x103C, val); /* 10b. Timing offset calibration in low temperature for VSB */ ret = lgdt3306a_read_reg(state, 0x103D, &val); val &= 0xFC; val |= 0x03; ret = lgdt3306a_write_reg(state, 0x103D, val); /* 10c. Timing offset calibration in low temperature for QAM */ ret = lgdt3306a_read_reg(state, 0x1036, &val); val &= 0xF0; val |= 0x0C; ret = lgdt3306a_write_reg(state, 0x1036, val); /* 11. Using the imaginary part of CIR in CIR loading */ ret = lgdt3306a_read_reg(state, 0x211F, &val); val &= 0xEF; /* do not use imaginary of CIR */ ret = lgdt3306a_write_reg(state, 0x211F, val); /* 12. Control of no signal detector function */ ret = lgdt3306a_read_reg(state, 0x2849, &val); val &= 0xEF; /* NOUSENOSIGDET=0, enable no signal detector */ ret = lgdt3306a_write_reg(state, 0x2849, val); /* FGR - put demod in some known mode */ ret = lgdt3306a_set_vsb(state); /* 13. TP stream format */ ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); /* 14. disable output buses */ ret = lgdt3306a_mpeg_tristate(state, 1); /* 15. Sleep (in reset) */ ret = lgdt3306a_sleep(state); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_set_parameters(struct dvb_frontend *fe) { struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct lgdt3306a_state *state = fe->demodulator_priv; int ret; lg_dbg("(%d, %d)\n", p->frequency, p->modulation); if (state->current_frequency == p->frequency && state->current_modulation == p->modulation) { lg_dbg(" (already set, skipping ...)\n"); return 0; } state->current_frequency = -1; state->current_modulation = -1; ret = lgdt3306a_power(state, 1); /* power up */ if (lg_chkerr(ret)) goto fail; if (fe->ops.tuner_ops.set_params) { ret = fe->ops.tuner_ops.set_params(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); #if 0 if (lg_chkerr(ret)) goto fail; state->current_frequency = p->frequency; #endif } ret = lgdt3306a_set_modulation(state, p); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_agc_setup(state, p); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_set_if(state, p); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_spectral_inversion(state, p, state->cfg->spectral_inversion ? 1 : 0); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_mpeg_mode_polarity(state, state->cfg->tpclk_edge, state->cfg->tpvalid_polarity); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_mpeg_tristate(state, 0); /* enable data bus */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; #ifdef DBG_DUMP lgdt3306a_DumpAllRegs(state); #endif state->current_frequency = p->frequency; fail: return ret; } static int lgdt3306a_get_frontend(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; struct dtv_frontend_properties *p = &fe->dtv_property_cache; lg_dbg("(%u, %d)\n", state->current_frequency, state->current_modulation); p->modulation = state->current_modulation; p->frequency = state->current_frequency; return 0; } static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe) { #if 1 return DVBFE_ALGO_CUSTOM; #else return DVBFE_ALGO_HW; #endif } /* ------------------------------------------------------------------------ */ static void lgdt3306a_monitor_vsb(struct lgdt3306a_state *state) { u8 val; int ret; u8 snrRef, maxPowerMan, nCombDet; u16 fbDlyCir; ret = lgdt3306a_read_reg(state, 0x21A1, &val); snrRef = val & 0x3F; ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan); ret = lgdt3306a_read_reg(state, 0x2191, &val); nCombDet = (val & 0x80) >> 7; ret = lgdt3306a_read_reg(state, 0x2180, &val); fbDlyCir = (val & 0x03) << 8; ret = lgdt3306a_read_reg(state, 0x2181, &val); fbDlyCir |= val; lg_dbg("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n", snrRef, maxPowerMan, nCombDet, fbDlyCir); /* Carrier offset sub loop bandwidth */ ret = lgdt3306a_read_reg(state, 0x1061, &val); val &= 0xF8; if ((snrRef > 18) && (maxPowerMan > 0x68) && (nCombDet == 0x01) && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) { /* SNR is over 18dB and no ghosting */ val |= 0x00; /* final bandwidth = 0 */ } else { val |= 0x04; /* final bandwidth = 4 */ } ret = lgdt3306a_write_reg(state, 0x1061, val); /* Adjust Notch Filter */ ret = lgdt3306a_read_reg(state, 0x0024, &val); val &= 0x0F; if (nCombDet == 0) { /* Turn on the Notch Filter */ val |= 0x50; } ret = lgdt3306a_write_reg(state, 0x0024, val); /* VSB Timing Recovery output normalization */ ret = lgdt3306a_read_reg(state, 0x103D, &val); val &= 0xCF; val |= 0x20; ret = lgdt3306a_write_reg(state, 0x103D, val); } static LG3306_MODULATION lgdt3306a_check_oper_mode(struct lgdt3306a_state *state) { u8 val = 0; int ret; ret = lgdt3306a_read_reg(state, 0x0081, &val); if (val & 0x80) { lg_dbg("VSB\n"); return LG3306_VSB; } else if (val & 0x08) { ret = lgdt3306a_read_reg(state, 0x00A6, &val); val = val >> 2; if (val & 0x01) { lg_dbg("QAM256\n"); return LG3306_QAM256; } else { lg_dbg("QAM64\n"); return LG3306_QAM64; } } lg_warn("UNKNOWN\n"); return LG3306_UNKNOWN_MODE; } static LG3306_LOCK_STATUS lgdt3306a_check_lock_status(struct lgdt3306a_state *state, LG3306_LOCK_CHECK whatLock) { u8 val = 0; int ret; LG3306_MODULATION modeOper; LG3306_LOCK_STATUS lockStatus; modeOper = LG3306_UNKNOWN_MODE; switch (whatLock) { case LG3306_SYNC_LOCK: { ret = lgdt3306a_read_reg(state, 0x00A6, &val); if ((val & 0x80) == 0x80) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; lg_dbg("SYNC_LOCK=%x\n", lockStatus); break; } case LG3306_AGC_LOCK: { ret = lgdt3306a_read_reg(state, 0x0080, &val); if ((val & 0x40) == 0x40) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; lg_dbg("AGC_LOCK=%x\n", lockStatus); break; } case LG3306_TR_LOCK: { modeOper = lgdt3306a_check_oper_mode(state); if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { ret = lgdt3306a_read_reg(state, 0x1094, &val); if ((val & 0x80) == 0x80) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; } else lockStatus = LG3306_UNKNOWN_LOCK; lg_dbg("TR_LOCK=%x\n", lockStatus); break; } case LG3306_FEC_LOCK: { modeOper = lgdt3306a_check_oper_mode(state); if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { ret = lgdt3306a_read_reg(state, 0x0080, &val); if ((val & 0x10) == 0x10) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; } else lockStatus = LG3306_UNKNOWN_LOCK; lg_dbg("FEC_LOCK=%x\n", lockStatus); break; } default: lockStatus = LG3306_UNKNOWN_LOCK; lg_warn("UNKNOWN whatLock=%d\n", whatLock); break; } return lockStatus; } static LG3306_NEVERLOCK_STATUS lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state) { u8 val = 0; int ret; LG3306_NEVERLOCK_STATUS lockStatus; ret = lgdt3306a_read_reg(state, 0x0080, &val); lockStatus = (LG3306_NEVERLOCK_STATUS)(val & 0x03); lg_dbg("NeverLock=%d", lockStatus); return lockStatus; } static void lgdt3306a_pre_monitoring(struct lgdt3306a_state *state) { u8 val = 0; int ret; u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus; /* Channel variation */ ret = lgdt3306a_read_reg(state, 0x21BC, &currChDiffACQ); /* SNR of Frame sync */ ret = lgdt3306a_read_reg(state, 0x21A1, &val); snrRef = val & 0x3F; /* Strong Main CIR */ ret = lgdt3306a_read_reg(state, 0x2199, &val); mainStrong = (val & 0x40) >> 6; ret = lgdt3306a_read_reg(state, 0x0090, &val); aiccrejStatus = (val & 0xF0) >> 4; lg_dbg("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n", snrRef, mainStrong, aiccrejStatus, currChDiffACQ); #if 0 if ((mainStrong == 0) && (currChDiffACQ > 0x70)) /* Dynamic ghost exists */ #endif if (mainStrong == 0) { ret = lgdt3306a_read_reg(state, 0x2135, &val); val &= 0x0F; val |= 0xA0; ret = lgdt3306a_write_reg(state, 0x2135, val); ret = lgdt3306a_read_reg(state, 0x2141, &val); val &= 0x3F; val |= 0x80; ret = lgdt3306a_write_reg(state, 0x2141, val); ret = lgdt3306a_write_reg(state, 0x2122, 0x70); } else { /* Weak ghost or static channel */ ret = lgdt3306a_read_reg(state, 0x2135, &val); val &= 0x0F; val |= 0x70; ret = lgdt3306a_write_reg(state, 0x2135, val); ret = lgdt3306a_read_reg(state, 0x2141, &val); val &= 0x3F; val |= 0x40; ret = lgdt3306a_write_reg(state, 0x2141, val); ret = lgdt3306a_write_reg(state, 0x2122, 0x40); } } static LG3306_LOCK_STATUS lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state) { LG3306_LOCK_STATUS syncLockStatus = LG3306_UNLOCK; int i; for (i = 0; i < 2; i++) { msleep(30); syncLockStatus = lgdt3306a_check_lock_status(state, LG3306_SYNC_LOCK); if (syncLockStatus == LG3306_LOCK) { lg_dbg("locked(%d)\n", i); return LG3306_LOCK; } } lg_dbg("not locked\n"); return LG3306_UNLOCK; } static LG3306_LOCK_STATUS lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state) { LG3306_LOCK_STATUS FECLockStatus = LG3306_UNLOCK; int i; for (i = 0; i < 2; i++) { msleep(30); FECLockStatus = lgdt3306a_check_lock_status(state, LG3306_FEC_LOCK); if (FECLockStatus == LG3306_LOCK) { lg_dbg("locked(%d)\n", i); return FECLockStatus; } } lg_dbg("not locked\n"); return FECLockStatus; } static LG3306_NEVERLOCK_STATUS lgdt3306a_neverlock_poll(struct lgdt3306a_state *state) { LG3306_NEVERLOCK_STATUS NLLockStatus = LG3306_NL_FAIL; int i; for (i = 0; i < 5; i++) { msleep(30); NLLockStatus = lgdt3306a_check_neverlock_status(state); if (NLLockStatus == LG3306_NL_LOCK) { lg_dbg("NL_LOCK(%d)\n", i); return NLLockStatus; } } lg_dbg("NLLockStatus=%d\n", NLLockStatus); return NLLockStatus; } static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state) { u8 val; int ret; ret = lgdt3306a_read_reg(state, 0x00FA, &val); return val; } static u32 log10_x1000(u32 x) { static u32 valx_x10[] = { 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 }; static u32 log10x_x1000[] = { 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 }; static u32 nelems = sizeof(valx_x10)/sizeof(valx_x10[0]); u32 log_val = 0; u32 i; if (x <= 0) return -1000000; /* signal error */ if (x < 10) { while (x < 10) { x = x * 10; log_val--; } } else if (x == 10) { return 0; /* log(1)=0 */ } else { while (x >= 100) { x = x / 10; log_val++; } } log_val *= 1000; if (x == 10) /* was our input an exact multiple of 10 */ return log_val; /* don't need to interpolate */ /* find our place on the log curve */ for (i = 1; i < nelems; i++) { if (valx_x10[i] >= x) break; } { u32 diff_val = x - valx_x10[i-1]; u32 step_val = valx_x10[i] - valx_x10[i-1]; u32 step_log10 = log10x_x1000[i] - log10x_x1000[i-1]; /* do a linear interpolation to get in-between values */ return log_val + log10x_x1000[i-1] + ((diff_val*step_log10) / step_val); } } static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state) { u32 mse; /* Mean-Square Error */ u32 pwr; /* Constelation power */ u32 snr_x100; mse = (read_reg(state, 0x00EC) << 8) | (read_reg(state, 0x00ED)); pwr = (read_reg(state, 0x00E8) << 8) | (read_reg(state, 0x00E9)); if (mse == 0) /* no signal */ return 0; snr_x100 = log10_x1000((pwr * 10000) / mse) - 3000; lg_dbg("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100); return snr_x100; } static LG3306_LOCK_STATUS lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state) { u8 cnt = 0; u8 packet_error; u32 snr; while (1) { if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) { lg_dbg("no sync lock!\n"); return LG3306_UNLOCK; } else { msleep(20); lgdt3306a_pre_monitoring(state); packet_error = lgdt3306a_get_packet_error(state); snr = lgdt3306a_calculate_snr_x100(state); lg_dbg("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); if ((snr < 1500) || (packet_error >= 0xff)) cnt++; else return LG3306_LOCK; if (cnt >= 10) { lg_dbg("not locked!\n"); return LG3306_UNLOCK; } } } return LG3306_UNLOCK; } static LG3306_LOCK_STATUS lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state) { u8 cnt = 0; u8 packet_error; u32 snr; while (1) { if (lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) { lg_dbg("no fec lock!\n"); return LG3306_UNLOCK; } else { msleep(20); packet_error = lgdt3306a_get_packet_error(state); snr = lgdt3306a_calculate_snr_x100(state); lg_dbg("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); if ((snr < 1500) || (packet_error >= 0xff)) cnt++; else return LG3306_LOCK; if (cnt >= 10) { lg_dbg("not locked!\n"); return LG3306_UNLOCK; } } } return LG3306_UNLOCK; } static int lgdt3306a_read_status(struct dvb_frontend *fe, fe_status_t *status) { struct lgdt3306a_state *state = fe->demodulator_priv; u16 strength = 0; int ret = 0; if (fe->ops.tuner_ops.get_rf_strength) { ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength); if (ret == 0) { lg_dbg("strength=%d\n", strength); } else { lg_dbg("fe->ops.tuner_ops.get_rf_strength() failed\n"); } } *status = 0; if (lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) { *status |= FE_HAS_SIGNAL; *status |= FE_HAS_CARRIER; switch (state->current_modulation) { case QAM_256: case QAM_64: if (lgdt3306a_qam_lock_poll(state) == LG3306_LOCK) { *status |= FE_HAS_VITERBI; *status |= FE_HAS_SYNC; *status |= FE_HAS_LOCK; } break; case VSB_8: if (lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK) { *status |= FE_HAS_VITERBI; *status |= FE_HAS_SYNC; *status |= FE_HAS_LOCK; lgdt3306a_monitor_vsb(state); } break; default: ret = -EINVAL; } } return ret; } static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr) { struct lgdt3306a_state *state = fe->demodulator_priv; state->snr = lgdt3306a_calculate_snr_x100(state); /* report SNR in dB * 10 */ *snr = state->snr/10; return 0; } static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { /* * Calculate some sort of "strength" from SNR */ struct lgdt3306a_state *state = fe->demodulator_priv; u16 snr; /* snr_x10 */ int ret; u32 ref_snr; /* snr*100 */ u32 str; *strength = 0; switch (state->current_modulation) { case VSB_8: ref_snr = 1600; /* 16dB */ break; case QAM_64: ref_snr = 2200; /* 22dB */ break; case QAM_256: ref_snr = 2800; /* 28dB */ break; default: return -EINVAL; } ret = fe->ops.read_snr(fe, &snr); if (lg_chkerr(ret)) goto fail; if (state->snr <= (ref_snr - 100)) str = 0; else if (state->snr <= ref_snr) str = (0xffff * 65) / 100; /* 65% */ else { str = state->snr - ref_snr; str /= 50; str += 78; /* 78%-100% */ if (str > 100) str = 100; str = (0xffff * str) / 100; } *strength = (u16)str; lg_dbg("strength=%u\n", *strength); fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber) { struct lgdt3306a_state *state = fe->demodulator_priv; u32 tmp; *ber = 0; #if 1 /* FGR - BUGBUG - I don't know what value is expected by dvb_core * what is the scale of the value?? */ tmp = read_reg(state, 0x00FC); /* NBERVALUE[24-31] */ tmp = (tmp << 8) | read_reg(state, 0x00FD); /* NBERVALUE[16-23] */ tmp = (tmp << 8) | read_reg(state, 0x00FE); /* NBERVALUE[8-15] */ tmp = (tmp << 8) | read_reg(state, 0x00FF); /* NBERVALUE[0-7] */ *ber = tmp; lg_dbg("ber=%u\n", tmp); #endif return 0; } static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) { struct lgdt3306a_state *state = fe->demodulator_priv; *ucblocks = 0; #if 1 /* FGR - BUGBUG - I don't know what value is expected by dvb_core * what happens when value wraps? */ *ucblocks = read_reg(state, 0x00F4); /* TPIFTPERRCNT[0-7] */ lg_dbg("ucblocks=%u\n", *ucblocks); #endif return 0; } static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, fe_status_t *status) { int ret = 0; struct lgdt3306a_state *state = fe->demodulator_priv; lg_dbg("re_tune=%u\n", re_tune); if (re_tune) { state->current_frequency = -1; /* force re-tune */ if ((ret = lgdt3306a_set_parameters(fe)) != 0) return ret; } *delay = 125; ret = lgdt3306a_read_status(fe, status); return ret; } static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *fe_tune_settings) { fe_tune_settings->min_delay_ms = 100; lg_dbg("\n"); return 0; } static int lgdt3306a_search(struct dvb_frontend *fe) { fe_status_t status = 0; int i, ret; /* set frontend */ ret = lgdt3306a_set_parameters(fe); if (ret) goto error; /* wait frontend lock */ for (i = 20; i > 0; i--) { lg_dbg(": loop=%d\n", i); msleep(50); ret = lgdt3306a_read_status(fe, &status); if (ret) goto error; if (status & FE_HAS_LOCK) break; } /* check if we have a valid signal */ if (status & FE_HAS_LOCK) return DVBFE_ALGO_SEARCH_SUCCESS; else return DVBFE_ALGO_SEARCH_AGAIN; error: lg_dbg("failed (%d)\n", ret); return DVBFE_ALGO_SEARCH_ERROR; } static void lgdt3306a_release(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; lg_dbg("\n"); kfree(state); } static struct dvb_frontend_ops lgdt3306a_ops; struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, struct i2c_adapter *i2c_adap) { struct lgdt3306a_state *state = NULL; int ret; u8 val; lg_dbg("(%d-%04x)\n", i2c_adap ? i2c_adapter_id(i2c_adap) : 0, config ? config->i2c_addr : 0); state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL); if (state == NULL) goto fail; state->cfg = config; state->i2c_adap = i2c_adap; memcpy(&state->frontend.ops, &lgdt3306a_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; /* verify that we're talking to a lg3306a */ /* FGR - NOTE - there is no obvious ChipId to check; we check * some "known" bits after reset, but it's still just a guess */ ret = lgdt3306a_read_reg(state, 0x0000, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0x74) != 0x74) { lg_warn("expected 0x74, got 0x%x\n", (val & 0x74)); #if 0 goto fail; /* BUGBUG - re-enable when we know this is right */ #endif } ret = lgdt3306a_read_reg(state, 0x0001, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0xF6) != 0xC6) { lg_warn("expected 0xC6, got 0x%x\n", (val & 0xF6)); #if 0 goto fail; /* BUGBUG - re-enable when we know this is right */ #endif } ret = lgdt3306a_read_reg(state, 0x0002, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0x73) != 0x03) { lg_warn("expected 0x03, got 0x%x\n", (val & 0x73)); #if 0 goto fail; /* BUGBUG - re-enable when we know this is right */ #endif } state->current_frequency = -1; state->current_modulation = -1; lgdt3306a_sleep(state); return &state->frontend; fail: lg_warn("unable to detect LGDT3306A hardware\n"); kfree(state); return NULL; } #ifdef DBG_DUMP static const short regtab[] = { 0x0000, //SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 0x0001, //1'b1 1'b1 1'b0 1'b0 AUTORPTRS 0x0002, //NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT 0x0003, //AGCRFOUT 0x0004, //ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL 0x0005, //PLLINDIVSE 0x0006, //PLLCTRL[7:0] 11100001 0x0007, //SYSINITWAITTIME[7:0] (msec) 00001000 0x0008, //STDOPMODE[7:0] 10000000 0x0009, //1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 0x000A, //DAFTEN 1'b1 x x SCSYSLOCK 0x000B, //SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 0x000D, //x SAMPLING4 0x000E, //SAMFREQ[15:8] 00000000 0x000F, //SAMFREQ[7:0] 00000000 0x0010, //IFFREQ[15:8] 01100000 0x0011, //IFFREQ[7:0] 00000000 0x0012, //AGCEN AGCREFMO 0x0013, //AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 0x0014, //AGCFIXVALUE[7:0] 01111111 0x0015, //AGCREF[15:8] 00001010 0x0016, //AGCREF[7:0] 11100100 0x0017, //AGCDELAY[7:0] 00100000 0x0018, //AGCRFBW[3:0] AGCIFBW[3:0] 10001000 0x0019, //AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL 0x001C, //1'b1 PFEN MFEN AICCVSYNC 0x001D, //1'b0 1'b1 1'b0 1'b1 AICCVSYNC 0x001E, //AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 0x001F, //AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 0x0020, //AICCDETTH[15:8] 01111100 0x0021, //AICCDETTH[7:0] 00000000 0x0022, //AICCOFFTH[15:8] 00000101 0x0023, //AICCOFFTH[7:0] 11100000 0x0024, //AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 0x0025, //AICCFIXFREQ3[23:16] 00000000 0x0026, //AICCFIXFREQ3[15:8] 00000000 0x0027, //AICCFIXFREQ3[7:0] 00000000 0x0028, //AICCFIXFREQ2[23:16] 00000000 0x0029, //AICCFIXFREQ2[15:8] 00000000 0x002A, //AICCFIXFREQ2[7:0] 00000000 0x002B, //AICCFIXFREQ1[23:16] 00000000 0x002C, //AICCFIXFREQ1[15:8] 00000000 0x002D, //AICCFIXFREQ1[7:0] 00000000 0x002E, //AICCFIXFREQ0[23:16] 00000000 0x002F, //AICCFIXFREQ0[15:8] 00000000 0x0030, //AICCFIXFREQ0[7:0] 00000000 0x0031, //1'b0 1'b1 1'b0 1'b0 x DAGC1STER 0x0032, //DAGC1STEN DAGC1STER 0x0033, //DAGC1STREF[15:8] 00001010 0x0034, //DAGC1STREF[7:0] 11100100 0x0035, //DAGC2NDE 0x0036, //DAGC2NDREF[15:8] 00001010 0x0037, //DAGC2NDREF[7:0] 10000000 0x0038, //DAGC2NDLOCKDETRNGSEL[1:0] 0x003D, //1'b1 SAMGEARS 0x0040, //SAMLFGMA 0x0041, //SAMLFBWM 0x0044, //1'b1 CRGEARSHE 0x0045, //CRLFGMAN 0x0046, //CFLFBWMA 0x0047, //CRLFGMAN 0x0048, //x x x x CRLFGSTEP_VS[3:0] xxxx1001 0x0049, //CRLFBWMA 0x004A, //CRLFBWMA 0x0050, //1'b0 1'b1 1'b1 1'b0 MSECALCDA 0x0070, //TPOUTEN TPIFEN TPCLKOUTE 0x0071, //TPSENB TPSSOPBITE 0x0073, //TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 0x0075, //x x x x x IQSWAPCTRL[2:0] xxxxx000 0x0076, //NBERCON NBERST NBERPOL NBERWSYN 0x0077, //x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 0x0078, //NBERPOLY[31:24] 00000000 0x0079, //NBERPOLY[23:16] 00000000 0x007A, //NBERPOLY[15:8] 00000000 0x007B, //NBERPOLY[7:0] 00000000 0x007C, //NBERPED[31:24] 00000000 0x007D, //NBERPED[23:16] 00000000 0x007E, //NBERPED[15:8] 00000000 0x007F, //NBERPED[7:0] 00000000 0x0080, //x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] 0x0085, //SPECINVST 0x0088, //SYSLOCKTIME[15:8] 0x0089, //SYSLOCKTIME[7:0] 0x008C, //FECLOCKTIME[15:8] 0x008D, //FECLOCKTIME[7:0] 0x008E, //AGCACCOUT[15:8] 0x008F, //AGCACCOUT[7:0] 0x0090, //AICCREJSTATUS[3:0] AICCREJBUSY[3:0] 0x0091, //AICCVSYNC 0x009C, //CARRFREQOFFSET[15:8] 0x009D, //CARRFREQOFFSET[7:0] 0x00A1, //SAMFREQOFFSET[23:16] 0x00A2, //SAMFREQOFFSET[15:8] 0x00A3, //SAMFREQOFFSET[7:0] 0x00A6, //SYNCLOCK SYNCLOCKH #if 0//covered elsewhere 0x00E8, //CONSTPWR[15:8] 0x00E9, //CONSTPWR[7:0] 0x00EA, //BMSE[15:8] 0x00EB, //BMSE[7:0] 0x00EC, //MSE[15:8] 0x00ED, //MSE[7:0] 0x00EE, //CONSTI[7:0] 0x00EF, //CONSTQ[7:0] #endif 0x00F4, //TPIFTPERRCNT[7:0] 0x00F5, //TPCORREC 0x00F6, //VBBER[15:8] 0x00F7, //VBBER[7:0] 0x00F8, //VABER[15:8] 0x00F9, //VABER[7:0] 0x00FA, //TPERRCNT[7:0] 0x00FB, //NBERLOCK x x x x x x x 0x00FC, //NBERVALUE[31:24] 0x00FD, //NBERVALUE[23:16] 0x00FE, //NBERVALUE[15:8] 0x00FF, //NBERVALUE[7:0] 0x1000, //1'b0 WODAGCOU 0x1005, //x x 1'b1 1'b1 x SRD_Q_QM 0x1009, //SRDWAITTIME[7:0] (10msec) 00100011 0x100A, //SRDWAITTIME_CQS[7:0] (msec) 01100100 0x101A, //x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 0x1036, //1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 0x103C, //SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 0x103D, //1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 0x103F, //SAMZTEDSE 0x105D, //EQSTATUSE 0x105F, //x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 0x1060, //1'b1 EQSTATUSE 0x1061, //CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 0x1065, //1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x 0x1066, //1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE 0x1068, //CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 0x106E, //x x x x x CREPHNEN_ 0x106F, //CREPHNTH_V[7:0] 00010101 0x1072, //CRSWEEPN 0x1073, //CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 0x1074, //CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 0x1080, //DAFTSTATUS[1:0] x x x x x x 0x1081, //SRDSTATUS[1:0] x x x x x SRDLOCK 0x10A9, //EQSTATUS_CQS[1:0] x x x x x x 0x10B7, //EQSTATUS_V[1:0] x x x x x x #if 0//SMART_ANT 0x1F00, //MODEDETE 0x1F01, //x x x x x x x SFNRST xxxxxxx0 0x1F03, //NUMOFANT[7:0] 10000000 0x1F04, //x SELMASK[6:0] x0000000 0x1F05, //x SETMASK[6:0] x0000000 0x1F06, //x TXDATA[6:0] x0000000 0x1F07, //x CHNUMBER[6:0] x0000000 0x1F09, //AGCTIME[23:16] 10011000 0x1F0A, //AGCTIME[15:8] 10010110 0x1F0B, //AGCTIME[7:0] 10000000 0x1F0C, //ANTTIME[31:24] 00000000 0x1F0D, //ANTTIME[23:16] 00000011 0x1F0E, //ANTTIME[15:8] 10010000 0x1F0F, //ANTTIME[7:0] 10010000 0x1F11, //SYNCTIME[23:16] 10011000 0x1F12, //SYNCTIME[15:8] 10010110 0x1F13, //SYNCTIME[7:0] 10000000 0x1F14, //SNRTIME[31:24] 00000001 0x1F15, //SNRTIME[23:16] 01111101 0x1F16, //SNRTIME[15:8] 01111000 0x1F17, //SNRTIME[7:0] 01000000 0x1F19, //FECTIME[23:16] 00000000 0x1F1A, //FECTIME[15:8] 01110010 0x1F1B, //FECTIME[7:0] 01110000 0x1F1D, //FECTHD[7:0] 00000011 0x1F1F, //SNRTHD[23:16] 00001000 0x1F20, //SNRTHD[15:8] 01111111 0x1F21, //SNRTHD[7:0] 10000101 0x1F80, //IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG 0x1F81, //x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO 0x1F82, //x x x SCANOPCD[4:0] 0x1F83, //x x x x MAINOPCD[3:0] 0x1F84, //x x RXDATA[13:8] 0x1F85, //RXDATA[7:0] 0x1F86, //x x SDTDATA[13:8] 0x1F87, //SDTDATA[7:0] 0x1F89, //ANTSNR[23:16] 0x1F8A, //ANTSNR[15:8] 0x1F8B, //ANTSNR[7:0] 0x1F8C, //x x x x ANTFEC[13:8] 0x1F8D, //ANTFEC[7:0] 0x1F8E, //MAXCNT[7:0] 0x1F8F, //SCANCNT[7:0] 0x1F91, //MAXPW[23:16] 0x1F92, //MAXPW[15:8] 0x1F93, //MAXPW[7:0] 0x1F95, //CURPWMSE[23:16] 0x1F96, //CURPWMSE[15:8] 0x1F97, //CURPWMSE[7:0] #endif//SMART_ANT 0x211F, //1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 0x212A, //EQAUTOST 0x2122, //CHFAST[7:0] 01100000 0x212B, //FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 0x212C, //PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 0x212D, //1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS 0x2135, //DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 0x2141, //TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 0x2162, //AICCCTRLE 0x2173, //PHNCNFCNT[7:0] 00000100 0x2179, //1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 0x217A, //1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 0x217E, //CNFCNTTPIF[7:0] 00001000 0x217F, //TPERRCNTTPIF[7:0] 00000001 0x2180, //x x x x x x FBDLYCIR[9:8] 0x2181, //FBDLYCIR[7:0] 0x2185, //MAXPWRMAIN[7:0] 0x2191, //NCOMBDET x x x x x x x 0x2199, //x MAINSTRON 0x219A, //FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] 0x21A1, //x x SNRREF[5:0] 0x2845, //1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 0x2846, //1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 0x2847, //ENNOSIGDE 0x2849, //1'b1 1'b1 NOUSENOSI 0x284A, //EQINITWAITTIME[7:0] 01100100 0x3000, //1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM 0x3001, //RPTRSTWAITTIME[7:0] (100msec) 00110010 0x3031, //FRAMELOC 0x3032, //1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 0x30A9, //VDLOCK_Q FRAMELOCK 0x30AA, //MPEGLOCK }; #define numDumpRegs (sizeof(regtab)/sizeof(regtab[0])) static u8 regval1[numDumpRegs] = {0, }; static u8 regval2[numDumpRegs] = {0, }; static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state) { memset(regval2, 0xff, sizeof(regval2)); lgdt3306a_DumpRegs(state); } static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state) { int i; int sav_debug = debug; if ((debug & DBG_DUMP) == 0) return; debug &= ~DBG_REG; /* supress DBG_REG during reg dump */ lg_info("\n"); for (i = 0; i < numDumpRegs; i++) { lgdt3306a_read_reg(state, regtab[i], ®val1[i]); if (regval1[i] != regval2[i]) { lg_info(" %04X = %02X\n", regtab[i], regval1[i]); regval2[i] = regval1[i]; } } debug = sav_debug; } #endif /* DBG_DUMP */ EXPORT_SYMBOL(lgdt3306a_attach); static struct dvb_frontend_ops lgdt3306a_ops = { .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, .info = { .name = "LG Electronics LGDT3306A VSB/QAM Frontend", #if 0 .type = FE_ATSC, #endif .frequency_min = 54000000, .frequency_max = 858000000, .frequency_stepsize = 62500, .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB }, .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl, .init = lgdt3306a_init, .sleep = lgdt3306a_fe_sleep, /* if this is set, it overrides the default swzigzag */ .tune = lgdt3306a_tune, .set_frontend = lgdt3306a_set_parameters, .get_frontend = lgdt3306a_get_frontend, .get_frontend_algo = lgdt3306a_get_frontend_algo, .get_tune_settings = lgdt3306a_get_tune_settings, .read_status = lgdt3306a_read_status, .read_ber = lgdt3306a_read_ber, .read_signal_strength = lgdt3306a_read_signal_strength, .read_snr = lgdt3306a_read_snr, .read_ucblocks = lgdt3306a_read_ucblocks, .release = lgdt3306a_release, .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl, .search = lgdt3306a_search, }; MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver"); MODULE_AUTHOR("Fred Richter "); MODULE_LICENSE("GPL"); MODULE_VERSION("0.2"); /* * Local variables: * c-basic-offset: 8 * End: */