diff options
| -rw-r--r-- | drivers/media/dvb/frontends/ds3000.c | 472 |
1 files changed, 213 insertions, 259 deletions
diff --git a/drivers/media/dvb/frontends/ds3000.c b/drivers/media/dvb/frontends/ds3000.c index 3373890..882be67 100644 --- a/drivers/media/dvb/frontends/ds3000.c +++ b/drivers/media/dvb/frontends/ds3000.c @@ -536,25 +536,6 @@ static int ds3000_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) return 0; } -static void ds3000_dump_registers(struct dvb_frontend *fe) -{ - struct ds3000_state *state = fe->demodulator_priv; - int x, y, reg = 0, val; - - for (y = 0; y < 16; y++) { - dprintk("%s: %02x: ", __func__, y); - for (x = 0; x < 16; x++) { - reg = (y << 4) + x; - val = ds3000_readreg(state, reg); - if (x != 15) - dprintk("%02x ", val); - else - dprintk("%02x\n", val); - } - } - dprintk("%s: -- DS3000 DUMP DONE --\n", __func__); -} - static int ds3000_read_status(struct dvb_frontend *fe, fe_status_t* status) { struct ds3000_state *state = fe->demodulator_priv; @@ -589,16 +570,6 @@ static int ds3000_read_status(struct dvb_frontend *fe, fe_status_t* status) return 0; } -#define FE_IS_TUNED (FE_HAS_SIGNAL + FE_HAS_LOCK) -static int ds3000_is_tuned(struct dvb_frontend *fe) -{ - fe_status_t tunerstat; - - ds3000_read_status(fe, &tunerstat); - - return ((tunerstat & FE_IS_TUNED) == FE_IS_TUNED); -} - /* read DS3000 BER value */ static int ds3000_read_ber(struct dvb_frontend *fe, u32* ber) { @@ -1049,7 +1020,7 @@ static int ds3000_tune(struct dvb_frontend *fe, struct ds3000_state *state = fe->demodulator_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int ret = 0, retune, i; + int i; u8 status, mlpf, mlpf_new, mlpf_max, mlpf_min, nlpf; u16 value, ndiv; u32 f3db; @@ -1072,252 +1043,235 @@ static int ds3000_tune(struct dvb_frontend *fe, /* discard the 'current' tuning parameters and prepare to tune */ ds3000_clone_params(fe); - retune = 1; /* try 1 times */ - dprintk("%s: retune = %d\n", __func__, retune); - dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency); - dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate); - dprintk("%s: FEC = %d \n", __func__, - state->dcur.fec); - dprintk("%s: Inversion = %d\n", __func__, state->dcur.inversion); - - do { - /* Reset status register */ - status = 0; - /* Tune */ - /* unknown */ - ds3000_tuner_writereg(state, 0x07, 0x02); - ds3000_tuner_writereg(state, 0x10, 0x00); - ds3000_tuner_writereg(state, 0x60, 0x79); - ds3000_tuner_writereg(state, 0x08, 0x01); - ds3000_tuner_writereg(state, 0x00, 0x01); - /* calculate and set freq divider */ - if (state->dcur.frequency < 1146000) { - ds3000_tuner_writereg(state, 0x10, 0x11); - ndiv = ((state->dcur.frequency * (6 + 8) * 4) + - (DS3000_XTAL_FREQ / 2)) / - DS3000_XTAL_FREQ - 1024; - } else { - ds3000_tuner_writereg(state, 0x10, 0x01); - ndiv = ((state->dcur.frequency * (6 + 8) * 2) + - (DS3000_XTAL_FREQ / 2)) / - DS3000_XTAL_FREQ - 1024; - } + /* Reset status register */ + status = 0; + /* Tune */ + /* unknown */ + ds3000_tuner_writereg(state, 0x07, 0x02); + ds3000_tuner_writereg(state, 0x10, 0x00); + ds3000_tuner_writereg(state, 0x60, 0x79); + ds3000_tuner_writereg(state, 0x08, 0x01); + ds3000_tuner_writereg(state, 0x00, 0x01); + /* calculate and set freq divider */ + if (state->dcur.frequency < 1146000) { + ds3000_tuner_writereg(state, 0x10, 0x11); + ndiv = ((state->dcur.frequency * (6 + 8) * 4) + + (DS3000_XTAL_FREQ / 2)) / + DS3000_XTAL_FREQ - 1024; + } else { + ds3000_tuner_writereg(state, 0x10, 0x01); + ndiv = ((state->dcur.frequency * (6 + 8) * 2) + + (DS3000_XTAL_FREQ / 2)) / + DS3000_XTAL_FREQ - 1024; + } - ds3000_tuner_writereg(state, 0x01, (ndiv & 0x0f00) >> 8); - ds3000_tuner_writereg(state, 0x02, ndiv & 0x00ff); - - /* set pll */ - ds3000_tuner_writereg(state, 0x03, 0x06); - ds3000_tuner_writereg(state, 0x51, 0x0f); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x10); - ds3000_tuner_writereg(state, 0x50, 0x00); - msleep(5); - - /* unknown */ - ds3000_tuner_writereg(state, 0x51, 0x17); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x08); - ds3000_tuner_writereg(state, 0x50, 0x00); - msleep(5); - - value = ds3000_tuner_readreg(state, 0x3d); - value &= 0x0f; - if ((value > 4) && (value < 15)) { - value -= 3; - if (value < 4) - value = 4; - value = ((value << 3) | 0x01) & 0x79; - } + ds3000_tuner_writereg(state, 0x01, (ndiv & 0x0f00) >> 8); + ds3000_tuner_writereg(state, 0x02, ndiv & 0x00ff); + + /* set pll */ + ds3000_tuner_writereg(state, 0x03, 0x06); + ds3000_tuner_writereg(state, 0x51, 0x0f); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x10); + ds3000_tuner_writereg(state, 0x50, 0x00); + msleep(5); + + /* unknown */ + ds3000_tuner_writereg(state, 0x51, 0x17); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x08); + ds3000_tuner_writereg(state, 0x50, 0x00); + msleep(5); + + value = ds3000_tuner_readreg(state, 0x3d); + value &= 0x0f; + if ((value > 4) && (value < 15)) { + value -= 3; + if (value < 4) + value = 4; + value = ((value << 3) | 0x01) & 0x79; + } - ds3000_tuner_writereg(state, 0x60, value); - ds3000_tuner_writereg(state, 0x51, 0x17); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x08); - ds3000_tuner_writereg(state, 0x50, 0x00); - - /* set low-pass filter period */ - ds3000_tuner_writereg(state, 0x04, 0x2e); - ds3000_tuner_writereg(state, 0x51, 0x1b); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x04); - ds3000_tuner_writereg(state, 0x50, 0x00); - msleep(5); - - f3db = ((state->dcur.symbol_rate / 1000) << 2) / 5 + 2000; - if ((state->dcur.symbol_rate / 1000) < 5000) - f3db += 3000; - if (f3db < 7000) - f3db = 7000; - if (f3db > 40000) - f3db = 40000; - - /* set low-pass filter baseband */ - value = ds3000_tuner_readreg(state, 0x26); - mlpf = 0x2e * 207 / ((value << 1) + 151); - mlpf_max = mlpf * 135 / 100; - mlpf_min = mlpf * 78 / 100; - if (mlpf_max > 63) - mlpf_max = 63; - - /* rounded to the closest integer */ - nlpf = ((mlpf * f3db * 1000) + (2766 * DS3000_XTAL_FREQ / 2)) - / (2766 * DS3000_XTAL_FREQ); - if (nlpf > 23) - nlpf = 23; - if (nlpf < 1) - nlpf = 1; - - /* rounded to the closest integer */ + ds3000_tuner_writereg(state, 0x60, value); + ds3000_tuner_writereg(state, 0x51, 0x17); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x08); + ds3000_tuner_writereg(state, 0x50, 0x00); + + /* set low-pass filter period */ + ds3000_tuner_writereg(state, 0x04, 0x2e); + ds3000_tuner_writereg(state, 0x51, 0x1b); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x04); + ds3000_tuner_writereg(state, 0x50, 0x00); + msleep(5); + + f3db = ((state->dcur.symbol_rate / 1000) << 2) / 5 + 2000; + if ((state->dcur.symbol_rate / 1000) < 5000) + f3db += 3000; + if (f3db < 7000) + f3db = 7000; + if (f3db > 40000) + f3db = 40000; + + /* set low-pass filter baseband */ + value = ds3000_tuner_readreg(state, 0x26); + mlpf = 0x2e * 207 / ((value << 1) + 151); + mlpf_max = mlpf * 135 / 100; + mlpf_min = mlpf * 78 / 100; + if (mlpf_max > 63) + mlpf_max = 63; + + /* rounded to the closest integer */ + nlpf = ((mlpf * f3db * 1000) + (2766 * DS3000_XTAL_FREQ / 2)) + / (2766 * DS3000_XTAL_FREQ); + if (nlpf > 23) + nlpf = 23; + if (nlpf < 1) + nlpf = 1; + + /* rounded to the closest integer */ + mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) + + (1000 * f3db / 2)) / (1000 * f3db); + + if (mlpf_new < mlpf_min) { + nlpf++; mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) + (1000 * f3db / 2)) / (1000 * f3db); + } - if (mlpf_new < mlpf_min) { - nlpf++; - mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) + - (1000 * f3db / 2)) / (1000 * f3db); - } + if (mlpf_new > mlpf_max) + mlpf_new = mlpf_max; + + ds3000_tuner_writereg(state, 0x04, mlpf_new); + ds3000_tuner_writereg(state, 0x06, nlpf); + ds3000_tuner_writereg(state, 0x51, 0x1b); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x04); + ds3000_tuner_writereg(state, 0x50, 0x00); + msleep(5); + + /* unknown */ + ds3000_tuner_writereg(state, 0x51, 0x1e); + ds3000_tuner_writereg(state, 0x51, 0x1f); + ds3000_tuner_writereg(state, 0x50, 0x01); + ds3000_tuner_writereg(state, 0x50, 0x00); + msleep(60); + + /* ds3000 global reset */ + ds3000_writereg(state, 0x07, 0x80); + ds3000_writereg(state, 0x07, 0x00); + /* ds3000 build-in uC reset */ + ds3000_writereg(state, 0xb2, 0x01); + /* ds3000 software reset */ + ds3000_writereg(state, 0x00, 0x01); - if (mlpf_new > mlpf_max) - mlpf_new = mlpf_max; - - ds3000_tuner_writereg(state, 0x04, mlpf_new); - ds3000_tuner_writereg(state, 0x06, nlpf); - ds3000_tuner_writereg(state, 0x51, 0x1b); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x04); - ds3000_tuner_writereg(state, 0x50, 0x00); - msleep(5); - - /* unknown */ - ds3000_tuner_writereg(state, 0x51, 0x1e); - ds3000_tuner_writereg(state, 0x51, 0x1f); - ds3000_tuner_writereg(state, 0x50, 0x01); - ds3000_tuner_writereg(state, 0x50, 0x00); - msleep(60); - - /* ds3000 global reset */ - ds3000_writereg(state, 0x07, 0x80); - ds3000_writereg(state, 0x07, 0x00); - /* ds3000 build-in uC reset */ - ds3000_writereg(state, 0xb2, 0x01); - /* ds3000 software reset */ - ds3000_writereg(state, 0x00, 0x01); + switch (c->delivery_system) { + case SYS_DVBS: + /* initialise the demod in DVB-S mode */ + for (i = 0; i < sizeof(ds3000_dvbs_init_tab); i += 2) + ds3000_writereg(state, + ds3000_dvbs_init_tab[i], + ds3000_dvbs_init_tab[i + 1]); + value = ds3000_readreg(state, 0xfe); + value &= 0xc0; + value |= 0x1b; + ds3000_writereg(state, 0xfe, value); + break; + case SYS_DVBS2: + /* initialise the demod in DVB-S2 mode */ + for (i = 0; i < sizeof(ds3000_dvbs2_init_tab); i += 2) + ds3000_writereg(state, + ds3000_dvbs2_init_tab[i], + ds3000_dvbs2_init_tab[i + 1]); + ds3000_writereg(state, 0xfe, 0x98); + break; + default: + return 1; + } + + /* enable 27MHz clock output */ + ds3000_writereg(state, 0x29, 0x80); + /* enable ac coupling */ + ds3000_writereg(state, 0x25, 0x8a); + + /* enhance symbol rate performance */ + if ((state->dcur.symbol_rate / 1000) <= 5000) { + value = 29777 / (state->dcur.symbol_rate / 1000) + 1; + if (value % 2 != 0) + value++; + ds3000_writereg(state, 0xc3, 0x0d); + ds3000_writereg(state, 0xc8, value); + ds3000_writereg(state, 0xc4, 0x10); + ds3000_writereg(state, 0xc7, 0x0e); + } else if ((state->dcur.symbol_rate / 1000) <= 10000) { + value = 92166 / (state->dcur.symbol_rate / 1000) + 1; + if (value % 2 != 0) + value++; + ds3000_writereg(state, 0xc3, 0x07); + ds3000_writereg(state, 0xc8, value); + ds3000_writereg(state, 0xc4, 0x09); + ds3000_writereg(state, 0xc7, 0x12); + } else if ((state->dcur.symbol_rate / 1000) <= 20000) { + value = 64516 / (state->dcur.symbol_rate / 1000) + 1; + ds3000_writereg(state, 0xc3, value); + ds3000_writereg(state, 0xc8, 0x0e); + ds3000_writereg(state, 0xc4, 0x07); + ds3000_writereg(state, 0xc7, 0x18); + } else { + value = 129032 / (state->dcur.symbol_rate / 1000) + 1; + ds3000_writereg(state, 0xc3, value); + ds3000_writereg(state, 0xc8, 0x0a); + ds3000_writereg(state, 0xc4, 0x05); + ds3000_writereg(state, 0xc7, 0x24); + } + + /* normalized symbol rate rounded to the closest integer */ + value = (((state->dcur.symbol_rate / 1000) << 16) + + (DS3000_SAMPLE_RATE / 2)) / DS3000_SAMPLE_RATE; + ds3000_writereg(state, 0x61, value & 0x00ff); + ds3000_writereg(state, 0x62, (value & 0xff00) >> 8); + + /* co-channel interference cancellation disabled */ + ds3000_writereg(state, 0x56, 0x00); + + /* equalizer disabled */ + ds3000_writereg(state, 0x76, 0x00); + /*ds3000_writereg(state, 0x08, 0x03); + ds3000_writereg(state, 0xfd, 0x22); + ds3000_writereg(state, 0x08, 0x07); + ds3000_writereg(state, 0xfd, 0x42); + ds3000_writereg(state, 0x08, 0x07);*/ + + if (state->config->ci_mode) { switch (c->delivery_system) { case SYS_DVBS: - /* initialise the demod in DVB-S mode */ - for (i = 0; i < sizeof(ds3000_dvbs_init_tab); i += 2) - ds3000_writereg(state, - ds3000_dvbs_init_tab[i], - ds3000_dvbs_init_tab[i + 1]); - value = ds3000_readreg(state, 0xfe); - value &= 0xc0; - value |= 0x1b; - ds3000_writereg(state, 0xfe, value); - break; + default: + ds3000_writereg(state, 0xfd, 0x80); + break; case SYS_DVBS2: - /* initialise the demod in DVB-S2 mode */ - for (i = 0; i < sizeof(ds3000_dvbs2_init_tab); i += 2) - ds3000_writereg(state, - ds3000_dvbs2_init_tab[i], - ds3000_dvbs2_init_tab[i + 1]); - ds3000_writereg(state, 0xfe, 0x98); + ds3000_writereg(state, 0xfd, 0x01); break; - default: - return 1; - } - - /* enable 27MHz clock output */ - ds3000_writereg(state, 0x29, 0x80); - /* enable ac coupling */ - ds3000_writereg(state, 0x25, 0x8a); - - /* enhance symbol rate performance */ - if ((state->dcur.symbol_rate / 1000) <= 5000) { - value = 29777 / (state->dcur.symbol_rate / 1000) + 1; - if (value % 2 != 0) - value++; - ds3000_writereg(state, 0xc3, 0x0d); - ds3000_writereg(state, 0xc8, value); - ds3000_writereg(state, 0xc4, 0x10); - ds3000_writereg(state, 0xc7, 0x0e); - } else if ((state->dcur.symbol_rate / 1000) <= 10000) { - value = 92166 / (state->dcur.symbol_rate / 1000) + 1; - if (value % 2 != 0) - value++; - ds3000_writereg(state, 0xc3, 0x07); - ds3000_writereg(state, 0xc8, value); - ds3000_writereg(state, 0xc4, 0x09); - ds3000_writereg(state, 0xc7, 0x12); - } else if ((state->dcur.symbol_rate / 1000) <= 20000) { - value = 64516 / (state->dcur.symbol_rate / 1000) + 1; - ds3000_writereg(state, 0xc3, value); - ds3000_writereg(state, 0xc8, 0x0e); - ds3000_writereg(state, 0xc4, 0x07); - ds3000_writereg(state, 0xc7, 0x18); - } else { - value = 129032 / (state->dcur.symbol_rate / 1000) + 1; - ds3000_writereg(state, 0xc3, value); - ds3000_writereg(state, 0xc8, 0x0a); - ds3000_writereg(state, 0xc4, 0x05); - ds3000_writereg(state, 0xc7, 0x24); } + } - /* normalized symbol rate rounded to the closest integer */ - value = (((state->dcur.symbol_rate / 1000) << 16) + - (DS3000_SAMPLE_RATE / 2)) / DS3000_SAMPLE_RATE; - ds3000_writereg(state, 0x61, value & 0x00ff); - ds3000_writereg(state, 0x62, (value & 0xff00) >> 8); - - /* co-channel interference cancellation disabled */ - ds3000_writereg(state, 0x56, 0x00); - - /* equalizer disabled */ - ds3000_writereg(state, 0x76, 0x00); - - /*ds3000_writereg(state, 0x08, 0x03); - ds3000_writereg(state, 0xfd, 0x22); - ds3000_writereg(state, 0x08, 0x07); - ds3000_writereg(state, 0xfd, 0x42); - ds3000_writereg(state, 0x08, 0x07);*/ - - if (state->config->ci_mode) { - switch (c->delivery_system) { - case SYS_DVBS: - default: - ds3000_writereg(state, 0xfd, 0x80); - break; - case SYS_DVBS2: - ds3000_writereg(state, 0xfd, 0x01); - break; - } - } + /* ds3000 out of software reset */ + ds3000_writereg(state, 0x00, 0x00); + /* start ds3000 build-in uC */ + ds3000_writereg(state, 0xb2, 0x00); - /* ds3000 out of software reset */ - ds3000_writereg(state, 0x00, 0x00); - /* start ds3000 build-in uC */ - ds3000_writereg(state, 0xb2, 0x00); - - /* TODO: calculate and set carrier offset */ - - /* wait before retrying */ - for (i = 0; i < 30 ; i++) { - if (ds3000_is_tuned(fe)) { - dprintk("%s: Tuned\n", __func__); - ds3000_dump_registers(fe); - goto tuned; - } - msleep(1); - } + /* TODO: calculate and set carrier offset */ - dprintk("%s: Not tuned\n", __func__); - ds3000_dump_registers(fe); + for (i = 0; i < 30 ; i++) { + ds3000_read_status(fe, &status); + if (status && FE_HAS_LOCK) + break; - } while (--retune); + msleep(10); + } -tuned: - return ret; + return 0; } static enum dvbfe_algo ds3000_get_algo(struct dvb_frontend *fe) |