/* Driver for ST STV0299 demodulator Copyright (C) 2001-2002 Convergence Integrated Media GmbH , , Philips SU1278/SH Copyright (C) 2002 by Peter Schildmann LG TDQF-S001F Copyright (C) 2002 Felix Domke & Andreas Oberritter Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B Copyright (C) 2003 Vadim Catana : Support for Philips SU1278 on Technotrend hardware Copyright (C) 2004 Andrew de Quincey 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 #include #include #include #include #include #include "dvb_frontend.h" #include "stv0299.h" struct stv0299_state { struct i2c_adapter* i2c; struct dvb_frontend_ops ops; const struct stv0299_config* config; struct dvb_frontend frontend; u8 initialised:1; u32 tuner_frequency; u32 symbol_rate; fe_code_rate_t fec_inner; int errmode; }; #define STATUS_BER 0 #define STATUS_UCBLOCKS 1 static int debug; static int debug_legacy_dish_switch; #define dprintk(args...) \ do { \ if (debug) printk(KERN_DEBUG "stv0299: " args); \ } while (0) static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data) { int ret; u8 buf [] = { reg, data }; struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; ret = i2c_transfer (state->i2c, &msg, 1); if (ret != 1) dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, " "ret == %i)\n", __FUNCTION__, reg, data, ret); return (ret != 1) ? -EREMOTEIO : 0; } int stv0299_writereg (struct dvb_frontend* fe, u8 reg, u8 data) { struct stv0299_state* state = fe->demodulator_priv; return stv0299_writeregI(state, reg, data); } static u8 stv0299_readreg (struct stv0299_state* state, u8 reg) { int ret; u8 b0 [] = { reg }; u8 b1 [] = { 0 }; struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; ret = i2c_transfer (state->i2c, msg, 2); if (ret != 2) dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __FUNCTION__, reg, ret); return b1[0]; } static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len) { int ret; struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 }, { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } }; ret = i2c_transfer (state->i2c, msg, 2); if (ret != 2) dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret); return ret == 2 ? 0 : ret; } static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec) { dprintk ("%s\n", __FUNCTION__); switch (fec) { case FEC_AUTO: { return stv0299_writeregI (state, 0x31, 0x1f); } case FEC_1_2: { return stv0299_writeregI (state, 0x31, 0x01); } case FEC_2_3: { return stv0299_writeregI (state, 0x31, 0x02); } case FEC_3_4: { return stv0299_writeregI (state, 0x31, 0x04); } case FEC_5_6: { return stv0299_writeregI (state, 0x31, 0x08); } case FEC_7_8: { return stv0299_writeregI (state, 0x31, 0x10); } default: { return -EINVAL; } } } static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state) { static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_1_2 }; u8 index; dprintk ("%s\n", __FUNCTION__); index = stv0299_readreg (state, 0x1b); index &= 0x7; if (index > 4) return FEC_AUTO; return fec_tab [index]; } static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout) { unsigned long start = jiffies; dprintk ("%s\n", __FUNCTION__); while (stv0299_readreg(state, 0x0a) & 1) { if (jiffies - start > timeout) { dprintk ("%s: timeout!!\n", __FUNCTION__); return -ETIMEDOUT; } msleep(10); }; return 0; } static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout) { unsigned long start = jiffies; dprintk ("%s\n", __FUNCTION__); while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) { if (jiffies - start > timeout) { dprintk ("%s: timeout!!\n", __FUNCTION__); return -ETIMEDOUT; } msleep(10); }; return 0; } static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate) { struct stv0299_state* state = fe->demodulator_priv; u64 big = srate; u32 ratio; // check rate is within limits if ((srate < 1000000) || (srate > 45000000)) return -EINVAL; // calculate value to program big = big << 20; big += (state->config->mclk-1); // round correctly do_div(big, state->config->mclk); ratio = big << 4; return state->config->set_symbol_rate(fe, srate, ratio); } static int stv0299_get_symbolrate (struct stv0299_state* state) { u32 Mclk = state->config->mclk / 4096L; u32 srate; s32 offset; u8 sfr[3]; s8 rtf; dprintk ("%s\n", __FUNCTION__); stv0299_readregs (state, 0x1f, sfr, 3); stv0299_readregs (state, 0x1a, &rtf, 1); srate = (sfr[0] << 8) | sfr[1]; srate *= Mclk; srate /= 16; srate += (sfr[2] >> 4) * Mclk / 256; offset = (s32) rtf * (srate / 4096L); offset /= 128; dprintk ("%s : srate = %i\n", __FUNCTION__, srate); dprintk ("%s : ofset = %i\n", __FUNCTION__, offset); srate += offset; srate += 1000; srate /= 2000; srate *= 2000; return srate; } static int stv0299_send_diseqc_msg (struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *m) { struct stv0299_state* state = fe->demodulator_priv; u8 val; int i; dprintk ("%s\n", __FUNCTION__); if (stv0299_wait_diseqc_idle (state, 100) < 0) return -ETIMEDOUT; val = stv0299_readreg (state, 0x08); if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6)) /* DiSEqC mode */ return -EREMOTEIO; for (i=0; imsg_len; i++) { if (stv0299_wait_diseqc_fifo (state, 100) < 0) return -ETIMEDOUT; if (stv0299_writeregI (state, 0x09, m->msg[i])) return -EREMOTEIO; } if (stv0299_wait_diseqc_idle (state, 100) < 0) return -ETIMEDOUT; return 0; } static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst) { struct stv0299_state* state = fe->demodulator_priv; u8 val; dprintk ("%s\n", __FUNCTION__); if (stv0299_wait_diseqc_idle (state, 100) < 0) return -ETIMEDOUT; val = stv0299_readreg (state, 0x08); if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2)) /* burst mode */ return -EREMOTEIO; if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff)) return -EREMOTEIO; if (stv0299_wait_diseqc_idle (state, 100) < 0) return -ETIMEDOUT; if (stv0299_writeregI (state, 0x08, val)) return -EREMOTEIO; return 0; } static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone) { struct stv0299_state* state = fe->demodulator_priv; u8 val; if (stv0299_wait_diseqc_idle (state, 100) < 0) return -ETIMEDOUT; val = stv0299_readreg (state, 0x08); switch (tone) { case SEC_TONE_ON: return stv0299_writeregI (state, 0x08, val | 0x3); case SEC_TONE_OFF: return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02); default: return -EINVAL; } } static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage) { struct stv0299_state* state = fe->demodulator_priv; u8 reg0x08; u8 reg0x0c; dprintk("%s: %s\n", __FUNCTION__, voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); reg0x08 = stv0299_readreg (state, 0x08); reg0x0c = stv0299_readreg (state, 0x0c); /** * H/V switching over OP0, OP1 and OP2 are LNB power enable bits */ reg0x0c &= 0x0f; if (voltage == SEC_VOLTAGE_OFF) { stv0299_writeregI (state, 0x0c, 0x00); /* LNB power off! */ return stv0299_writeregI (state, 0x08, 0x00); /* LNB power off! */ } stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6)); switch (voltage) { case SEC_VOLTAGE_13: if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10; else reg0x0c |= 0x40; return stv0299_writeregI(state, 0x0c, reg0x0c); case SEC_VOLTAGE_18: return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50); default: return -EINVAL; }; } static inline s32 stv0299_calc_usec_delay (struct timeval lasttime, struct timeval curtime) { return ((curtime.tv_usec < lasttime.tv_usec) ? 1000000 - lasttime.tv_usec + curtime.tv_usec : curtime.tv_usec - lasttime.tv_usec); } static void stv0299_sleep_until (struct timeval *waketime, u32 add_usec) { struct timeval lasttime; s32 delta, newdelta; waketime->tv_usec += add_usec; if (waketime->tv_usec >= 1000000) { waketime->tv_usec -= 1000000; waketime->tv_sec++; } do_gettimeofday (&lasttime); delta = stv0299_calc_usec_delay (lasttime, *waketime); if (delta > 2500) { msleep ((delta - 1500) / 1000); do_gettimeofday (&lasttime); newdelta = stv0299_calc_usec_delay (lasttime, *waketime); delta = (newdelta > delta) ? 0 : newdelta; } if (delta > 0) udelay (delta); } static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd) { struct stv0299_state* state = fe->demodulator_priv; u8 reg0x08; u8 reg0x0c; u8 lv_mask = 0x40; u8 last = 1; int i; struct timeval nexttime; struct timeval tv[10]; reg0x08 = stv0299_readreg (state, 0x08); reg0x0c = stv0299_readreg (state, 0x0c); reg0x0c &= 0x0f; stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6)); if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) lv_mask = 0x10; cmd = cmd << 1; if (debug_legacy_dish_switch) printk ("%s switch command: 0x%04x\n",__FUNCTION__, cmd); do_gettimeofday (&nexttime); if (debug_legacy_dish_switch) memcpy (&tv[0], &nexttime, sizeof (struct timeval)); stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */ stv0299_sleep_until (&nexttime, 32000); for (i=0; i<9; i++) { if (debug_legacy_dish_switch) do_gettimeofday (&tv[i+1]); if((cmd & 0x01) != last) { /* set voltage to (last ? 13V : 18V) */ stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50)); last = (last) ? 0 : 1; } cmd = cmd >> 1; if (i != 8) stv0299_sleep_until (&nexttime, 8000); } if (debug_legacy_dish_switch) { printk ("%s(%d): switch delay (should be 32k followed by all 8k\n", __FUNCTION__, fe->dvb->num); for (i=1; i < 10; i++) printk ("%d: %d\n", i, stv0299_calc_usec_delay (tv[i-1] , tv[i])); } return 0; } static int stv0299_init (struct dvb_frontend* fe) { struct stv0299_state* state = fe->demodulator_priv; int i; dprintk("stv0299: init chip\n"); for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2) stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]); if (state->config->pll_init) { stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */ state->config->pll_init(fe, state->i2c); stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */ } return 0; } static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status) { struct stv0299_state* state = fe->demodulator_priv; u8 signal = 0xff - stv0299_readreg (state, 0x18); u8 sync = stv0299_readreg (state, 0x1b); dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __FUNCTION__, sync); *status = 0; if (signal > 10) *status |= FE_HAS_SIGNAL; if (sync & 0x80) *status |= FE_HAS_CARRIER; if (sync & 0x10) *status |= FE_HAS_VITERBI; if (sync & 0x08) *status |= FE_HAS_SYNC; if ((sync & 0x98) == 0x98) *status |= FE_HAS_LOCK; return 0; } static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber) { struct stv0299_state* state = fe->demodulator_priv; if (state->errmode != STATUS_BER) return 0; *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e); return 0; } static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength) { struct stv0299_state* state = fe->demodulator_priv; s32 signal = 0xffff - ((stv0299_readreg (state, 0x18) << 8) | stv0299_readreg (state, 0x19)); dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __FUNCTION__, stv0299_readreg (state, 0x18), stv0299_readreg (state, 0x19), (int) signal); signal = signal * 5 / 4; *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; return 0; } static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr) { struct stv0299_state* state = fe->demodulator_priv; s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8) | stv0299_readreg (state, 0x25)); xsnr = 3 * (xsnr - 0xa100); *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; return 0; } static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) { struct stv0299_state* state = fe->demodulator_priv; if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0; else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e); return 0; } static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p) { struct stv0299_state* state = fe->demodulator_priv; int invval = 0; dprintk ("%s : FE_SET_FRONTEND\n", __FUNCTION__); // set the inversion if (p->inversion == INVERSION_OFF) invval = 0; else if (p->inversion == INVERSION_ON) invval = 1; else { printk("stv0299 does not support auto-inversion\n"); return -EINVAL; } if (state->config->invert) invval = (~invval) & 1; stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval); if (state->config->enhanced_tuning) { /* check if we should do a finetune */ int frequency_delta = p->frequency - state->tuner_frequency; int minmax = p->u.qpsk.symbol_rate / 2000; if (minmax < 5000) minmax = 5000; if ((frequency_delta > -minmax) && (frequency_delta < minmax) && (frequency_delta != 0) && (state->fec_inner == p->u.qpsk.fec_inner) && (state->symbol_rate == p->u.qpsk.symbol_rate)) { int Drot_freq = (frequency_delta << 16) / (state->config->mclk / 1000); // zap the derotator registers first stv0299_writeregI(state, 0x22, 0x00); stv0299_writeregI(state, 0x23, 0x00); // now set them as we want stv0299_writeregI(state, 0x22, Drot_freq >> 8); stv0299_writeregI(state, 0x23, Drot_freq); } else { /* A "normal" tune is requested */ stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */ state->config->pll_set(fe, state->i2c, p); stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */ stv0299_writeregI(state, 0x32, 0x80); stv0299_writeregI(state, 0x22, 0x00); stv0299_writeregI(state, 0x23, 0x00); stv0299_writeregI(state, 0x32, 0x19); stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate); stv0299_set_FEC (state, p->u.qpsk.fec_inner); } } else { stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */ state->config->pll_set(fe, state->i2c, p); stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */ stv0299_set_FEC (state, p->u.qpsk.fec_inner); stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate); stv0299_writeregI(state, 0x22, 0x00); stv0299_writeregI(state, 0x23, 0x00); stv0299_readreg (state, 0x23); stv0299_writeregI(state, 0x12, 0xb9); } state->tuner_frequency = p->frequency; state->fec_inner = p->u.qpsk.fec_inner; state->symbol_rate = p->u.qpsk.symbol_rate; return 0; } static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p) { struct stv0299_state* state = fe->demodulator_priv; s32 derot_freq; int invval; derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8) | stv0299_readreg (state, 0x23)); derot_freq *= (state->config->mclk >> 16); derot_freq += 500; derot_freq /= 1000; p->frequency += derot_freq; invval = stv0299_readreg (state, 0x0c) & 1; if (state->config->invert) invval = (~invval) & 1; p->inversion = invval ? INVERSION_ON : INVERSION_OFF; p->u.qpsk.fec_inner = stv0299_get_fec (state); p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state); return 0; } static int stv0299_sleep(struct dvb_frontend* fe) { struct stv0299_state* state = fe->demodulator_priv; stv0299_writeregI(state, 0x02, 0x80); state->initialised = 0; return 0; } static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) { struct stv0299_state* state = fe->demodulator_priv; fesettings->min_delay_ms = state->config->min_delay_ms; if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) { fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000; fesettings->max_drift = 5000; } else { fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000; fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000; } return 0; } static void stv0299_release(struct dvb_frontend* fe) { struct stv0299_state* state = fe->demodulator_priv; kfree(state); } static struct dvb_frontend_ops stv0299_ops; struct dvb_frontend* stv0299_attach(const struct stv0299_config* config, struct i2c_adapter* i2c) { struct stv0299_state* state = NULL; int id; /* allocate memory for the internal state */ state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL); if (state == NULL) goto error; /* setup the state */ state->config = config; state->i2c = i2c; memcpy(&state->ops, &stv0299_ops, sizeof(struct dvb_frontend_ops)); state->initialised = 0; state->tuner_frequency = 0; state->symbol_rate = 0; state->fec_inner = 0; state->errmode = STATUS_BER; /* check if the demod is there */ stv0299_writeregI(state, 0x02, 0x34); /* standby off */ msleep(200); id = stv0299_readreg(state, 0x00); /* register 0x00 contains 0xa1 for STV0299 and STV0299B */ /* register 0x00 might contain 0x80 when returning from standby */ if (id != 0xa1 && id != 0x80) goto error; /* create dvb_frontend */ state->frontend.ops = &state->ops; state->frontend.demodulator_priv = state; return &state->frontend; error: kfree(state); return NULL; } static struct dvb_frontend_ops stv0299_ops = { .info = { .name = "ST STV0299 DVB-S", .type = FE_QPSK, .frequency_min = 950000, .frequency_max = 2150000, .frequency_stepsize = 125, /* kHz for QPSK frontends */ .frequency_tolerance = 0, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, .symbol_rate_tolerance = 500, /* ppm */ .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_QPSK | FE_CAN_FEC_AUTO }, .release = stv0299_release, .init = stv0299_init, .sleep = stv0299_sleep, .set_frontend = stv0299_set_frontend, .get_frontend = stv0299_get_frontend, .get_tune_settings = stv0299_get_tune_settings, .read_status = stv0299_read_status, .read_ber = stv0299_read_ber, .read_signal_strength = stv0299_read_signal_strength, .read_snr = stv0299_read_snr, .read_ucblocks = stv0299_read_ucblocks, .diseqc_send_master_cmd = stv0299_send_diseqc_msg, .diseqc_send_burst = stv0299_send_diseqc_burst, .set_tone = stv0299_set_tone, .set_voltage = stv0299_set_voltage, .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd, }; module_param(debug_legacy_dish_switch, int, 0444); MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches"); module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver"); MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, " "Andreas Oberritter, Andrew de Quincey, Kenneth Aafløy"); MODULE_LICENSE("GPL"); EXPORT_SYMBOL(stv0299_writereg); EXPORT_SYMBOL(stv0299_attach);