diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mt352.c')
-rw-r--r-- | drivers/media/dvb/frontends/mt352.c | 610 |
1 files changed, 0 insertions, 610 deletions
diff --git a/drivers/media/dvb/frontends/mt352.c b/drivers/media/dvb/frontends/mt352.c deleted file mode 100644 index 2c3b50e828d..00000000000 --- a/drivers/media/dvb/frontends/mt352.c +++ /dev/null @@ -1,610 +0,0 @@ -/* - * Driver for Zarlink DVB-T MT352 demodulator - * - * Written by Holger Waechtler <holger@qanu.de> - * and Daniel Mack <daniel@qanu.de> - * - * AVerMedia AVerTV DVB-T 771 support by - * Wolfram Joost <dbox2@frokaschwei.de> - * - * Support for Samsung TDTC9251DH01C(M) tuner - * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it> - * Amauri Celani <acelani@essegi.net> - * - * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by - * Christopher Pascoe <c.pascoe@itee.uq.edu.au> - * - * 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 <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/slab.h> - -#include "dvb_frontend.h" -#include "mt352_priv.h" -#include "mt352.h" - -struct mt352_state { - struct i2c_adapter* i2c; - struct dvb_frontend frontend; - - /* configuration settings */ - struct mt352_config config; -}; - -static int debug; -#define dprintk(args...) \ - do { \ - if (debug) printk(KERN_DEBUG "mt352: " args); \ - } while (0) - -static int mt352_single_write(struct dvb_frontend *fe, u8 reg, u8 val) -{ - struct mt352_state* state = fe->demodulator_priv; - u8 buf[2] = { reg, val }; - struct i2c_msg msg = { .addr = state->config.demod_address, .flags = 0, - .buf = buf, .len = 2 }; - int err = i2c_transfer(state->i2c, &msg, 1); - if (err != 1) { - printk("mt352_write() to reg %x failed (err = %d)!\n", reg, err); - return err; - } - return 0; -} - -static int _mt352_write(struct dvb_frontend* fe, const u8 ibuf[], int ilen) -{ - int err,i; - for (i=0; i < ilen-1; i++) - if ((err = mt352_single_write(fe,ibuf[0]+i,ibuf[i+1]))) - return err; - - return 0; -} - -static int mt352_read_register(struct mt352_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) { - printk("%s: readreg error (reg=%d, ret==%i)\n", - __func__, reg, ret); - return ret; - } - - return b1[0]; -} - -static int mt352_sleep(struct dvb_frontend* fe) -{ - static u8 mt352_softdown[] = { CLOCK_CTL, 0x20, 0x08 }; - - _mt352_write(fe, mt352_softdown, sizeof(mt352_softdown)); - return 0; -} - -static void mt352_calc_nominal_rate(struct mt352_state* state, - u32 bandwidth, - unsigned char *buf) -{ - u32 adc_clock = 20480; /* 20.340 MHz */ - u32 bw,value; - - switch (bandwidth) { - case 6000000: - bw = 6; - break; - case 7000000: - bw = 7; - break; - case 8000000: - default: - bw = 8; - break; - } - if (state->config.adc_clock) - adc_clock = state->config.adc_clock; - - value = 64 * bw * (1<<16) / (7 * 8); - value = value * 1000 / adc_clock; - dprintk("%s: bw %d, adc_clock %d => 0x%x\n", - __func__, bw, adc_clock, value); - buf[0] = msb(value); - buf[1] = lsb(value); -} - -static void mt352_calc_input_freq(struct mt352_state* state, - unsigned char *buf) -{ - int adc_clock = 20480; /* 20.480000 MHz */ - int if2 = 36167; /* 36.166667 MHz */ - int ife,value; - - if (state->config.adc_clock) - adc_clock = state->config.adc_clock; - if (state->config.if2) - if2 = state->config.if2; - - if (adc_clock >= if2 * 2) - ife = if2; - else { - ife = adc_clock - (if2 % adc_clock); - if (ife > adc_clock / 2) - ife = adc_clock - ife; - } - value = -16374 * ife / adc_clock; - dprintk("%s: if2 %d, ife %d, adc_clock %d => %d / 0x%x\n", - __func__, if2, ife, adc_clock, value, value & 0x3fff); - buf[0] = msb(value); - buf[1] = lsb(value); -} - -static int mt352_set_parameters(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *op = &fe->dtv_property_cache; - struct mt352_state* state = fe->demodulator_priv; - unsigned char buf[13]; - static unsigned char tuner_go[] = { 0x5d, 0x01 }; - static unsigned char fsm_go[] = { 0x5e, 0x01 }; - unsigned int tps = 0; - - switch (op->code_rate_HP) { - case FEC_2_3: - tps |= (1 << 7); - break; - case FEC_3_4: - tps |= (2 << 7); - break; - case FEC_5_6: - tps |= (3 << 7); - break; - case FEC_7_8: - tps |= (4 << 7); - break; - case FEC_1_2: - case FEC_AUTO: - break; - default: - return -EINVAL; - } - - switch (op->code_rate_LP) { - case FEC_2_3: - tps |= (1 << 4); - break; - case FEC_3_4: - tps |= (2 << 4); - break; - case FEC_5_6: - tps |= (3 << 4); - break; - case FEC_7_8: - tps |= (4 << 4); - break; - case FEC_1_2: - case FEC_AUTO: - break; - case FEC_NONE: - if (op->hierarchy == HIERARCHY_AUTO || - op->hierarchy == HIERARCHY_NONE) - break; - default: - return -EINVAL; - } - - switch (op->modulation) { - case QPSK: - break; - case QAM_AUTO: - case QAM_16: - tps |= (1 << 13); - break; - case QAM_64: - tps |= (2 << 13); - break; - default: - return -EINVAL; - } - - switch (op->transmission_mode) { - case TRANSMISSION_MODE_2K: - case TRANSMISSION_MODE_AUTO: - break; - case TRANSMISSION_MODE_8K: - tps |= (1 << 0); - break; - default: - return -EINVAL; - } - - switch (op->guard_interval) { - case GUARD_INTERVAL_1_32: - case GUARD_INTERVAL_AUTO: - break; - case GUARD_INTERVAL_1_16: - tps |= (1 << 2); - break; - case GUARD_INTERVAL_1_8: - tps |= (2 << 2); - break; - case GUARD_INTERVAL_1_4: - tps |= (3 << 2); - break; - default: - return -EINVAL; - } - - switch (op->hierarchy) { - case HIERARCHY_AUTO: - case HIERARCHY_NONE: - break; - case HIERARCHY_1: - tps |= (1 << 10); - break; - case HIERARCHY_2: - tps |= (2 << 10); - break; - case HIERARCHY_4: - tps |= (3 << 10); - break; - default: - return -EINVAL; - } - - - buf[0] = TPS_GIVEN_1; /* TPS_GIVEN_1 and following registers */ - - buf[1] = msb(tps); /* TPS_GIVEN_(1|0) */ - buf[2] = lsb(tps); - - buf[3] = 0x50; // old -// buf[3] = 0xf4; // pinnacle - - mt352_calc_nominal_rate(state, op->bandwidth_hz, buf+4); - mt352_calc_input_freq(state, buf+6); - - if (state->config.no_tuner) { - if (fe->ops.tuner_ops.set_params) { - fe->ops.tuner_ops.set_params(fe); - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - } - - _mt352_write(fe, buf, 8); - _mt352_write(fe, fsm_go, 2); - } else { - if (fe->ops.tuner_ops.calc_regs) { - fe->ops.tuner_ops.calc_regs(fe, buf+8, 5); - buf[8] <<= 1; - _mt352_write(fe, buf, sizeof(buf)); - _mt352_write(fe, tuner_go, 2); - } - } - - return 0; -} - -static int mt352_get_parameters(struct dvb_frontend* fe) -{ - struct dtv_frontend_properties *op = &fe->dtv_property_cache; - struct mt352_state* state = fe->demodulator_priv; - u16 tps; - u16 div; - u8 trl; - static const u8 tps_fec_to_api[8] = - { - FEC_1_2, - FEC_2_3, - FEC_3_4, - FEC_5_6, - FEC_7_8, - FEC_AUTO, - FEC_AUTO, - FEC_AUTO - }; - - if ( (mt352_read_register(state,0x00) & 0xC0) != 0xC0 ) - return -EINVAL; - - /* Use TPS_RECEIVED-registers, not the TPS_CURRENT-registers because - * the mt352 sometimes works with the wrong parameters - */ - tps = (mt352_read_register(state, TPS_RECEIVED_1) << 8) | mt352_read_register(state, TPS_RECEIVED_0); - div = (mt352_read_register(state, CHAN_START_1) << 8) | mt352_read_register(state, CHAN_START_0); - trl = mt352_read_register(state, TRL_NOMINAL_RATE_1); - - op->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7]; - op->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7]; - - switch ( (tps >> 13) & 3) - { - case 0: - op->modulation = QPSK; - break; - case 1: - op->modulation = QAM_16; - break; - case 2: - op->modulation = QAM_64; - break; - default: - op->modulation = QAM_AUTO; - break; - } - - op->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K : TRANSMISSION_MODE_2K; - - switch ( (tps >> 2) & 3) - { - case 0: - op->guard_interval = GUARD_INTERVAL_1_32; - break; - case 1: - op->guard_interval = GUARD_INTERVAL_1_16; - break; - case 2: - op->guard_interval = GUARD_INTERVAL_1_8; - break; - case 3: - op->guard_interval = GUARD_INTERVAL_1_4; - break; - default: - op->guard_interval = GUARD_INTERVAL_AUTO; - break; - } - - switch ( (tps >> 10) & 7) - { - case 0: - op->hierarchy = HIERARCHY_NONE; - break; - case 1: - op->hierarchy = HIERARCHY_1; - break; - case 2: - op->hierarchy = HIERARCHY_2; - break; - case 3: - op->hierarchy = HIERARCHY_4; - break; - default: - op->hierarchy = HIERARCHY_AUTO; - break; - } - - op->frequency = (500 * (div - IF_FREQUENCYx6)) / 3 * 1000; - - if (trl == 0x72) - op->bandwidth_hz = 8000000; - else if (trl == 0x64) - op->bandwidth_hz = 7000000; - else - op->bandwidth_hz = 6000000; - - - if (mt352_read_register(state, STATUS_2) & 0x02) - op->inversion = INVERSION_OFF; - else - op->inversion = INVERSION_ON; - - return 0; -} - -static int mt352_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct mt352_state* state = fe->demodulator_priv; - int s0, s1, s3; - - /* FIXME: - * - * The MT352 design manual from Zarlink states (page 46-47): - * - * Notes about the TUNER_GO register: - * - * If the Read_Tuner_Byte (bit-1) is activated, then the tuner status - * byte is copied from the tuner to the STATUS_3 register and - * completion of the read operation is indicated by bit-5 of the - * INTERRUPT_3 register. - */ - - if ((s0 = mt352_read_register(state, STATUS_0)) < 0) - return -EREMOTEIO; - if ((s1 = mt352_read_register(state, STATUS_1)) < 0) - return -EREMOTEIO; - if ((s3 = mt352_read_register(state, STATUS_3)) < 0) - return -EREMOTEIO; - - *status = 0; - if (s0 & (1 << 4)) - *status |= FE_HAS_CARRIER; - if (s0 & (1 << 1)) - *status |= FE_HAS_VITERBI; - if (s0 & (1 << 5)) - *status |= FE_HAS_LOCK; - if (s1 & (1 << 1)) - *status |= FE_HAS_SYNC; - if (s3 & (1 << 6)) - *status |= FE_HAS_SIGNAL; - - if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) != - (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) - *status &= ~FE_HAS_LOCK; - - return 0; -} - -static int mt352_read_ber(struct dvb_frontend* fe, u32* ber) -{ - struct mt352_state* state = fe->demodulator_priv; - - *ber = (mt352_read_register (state, RS_ERR_CNT_2) << 16) | - (mt352_read_register (state, RS_ERR_CNT_1) << 8) | - (mt352_read_register (state, RS_ERR_CNT_0)); - - return 0; -} - -static int mt352_read_signal_strength(struct dvb_frontend* fe, u16* strength) -{ - struct mt352_state* state = fe->demodulator_priv; - - /* align the 12 bit AGC gain with the most significant bits */ - u16 signal = ((mt352_read_register(state, AGC_GAIN_1) & 0x0f) << 12) | - (mt352_read_register(state, AGC_GAIN_0) << 4); - - /* inverse of gain is signal strength */ - *strength = ~signal; - return 0; -} - -static int mt352_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct mt352_state* state = fe->demodulator_priv; - - u8 _snr = mt352_read_register (state, SNR); - *snr = (_snr << 8) | _snr; - - return 0; -} - -static int mt352_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) -{ - struct mt352_state* state = fe->demodulator_priv; - - *ucblocks = (mt352_read_register (state, RS_UBC_1) << 8) | - (mt352_read_register (state, RS_UBC_0)); - - return 0; -} - -static int mt352_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings) -{ - fe_tune_settings->min_delay_ms = 800; - fe_tune_settings->step_size = 0; - fe_tune_settings->max_drift = 0; - - return 0; -} - -static int mt352_init(struct dvb_frontend* fe) -{ - struct mt352_state* state = fe->demodulator_priv; - - static u8 mt352_reset_attach [] = { RESET, 0xC0 }; - - dprintk("%s: hello\n",__func__); - - if ((mt352_read_register(state, CLOCK_CTL) & 0x10) == 0 || - (mt352_read_register(state, CONFIG) & 0x20) == 0) { - - /* Do a "hard" reset */ - _mt352_write(fe, mt352_reset_attach, sizeof(mt352_reset_attach)); - return state->config.demod_init(fe); - } - - return 0; -} - -static void mt352_release(struct dvb_frontend* fe) -{ - struct mt352_state* state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops mt352_ops; - -struct dvb_frontend* mt352_attach(const struct mt352_config* config, - struct i2c_adapter* i2c) -{ - struct mt352_state* state = NULL; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct mt352_state), GFP_KERNEL); - if (state == NULL) goto error; - - /* setup the state */ - state->i2c = i2c; - memcpy(&state->config,config,sizeof(struct mt352_config)); - - /* check if the demod is there */ - if (mt352_read_register(state, CHIP_ID) != ID_MT352) goto error; - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &mt352_ops, sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - return &state->frontend; - -error: - kfree(state); - return NULL; -} - -static struct dvb_frontend_ops mt352_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "Zarlink MT352 DVB-T", - .frequency_min = 174000000, - .frequency_max = 862000000, - .frequency_stepsize = 166667, - .frequency_tolerance = 0, - .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_FEC_AUTO | - FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | - FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | - FE_CAN_MUTE_TS - }, - - .release = mt352_release, - - .init = mt352_init, - .sleep = mt352_sleep, - .write = _mt352_write, - - .set_frontend = mt352_set_parameters, - .get_frontend = mt352_get_parameters, - .get_tune_settings = mt352_get_tune_settings, - - .read_status = mt352_read_status, - .read_ber = mt352_read_ber, - .read_signal_strength = mt352_read_signal_strength, - .read_snr = mt352_read_snr, - .read_ucblocks = mt352_read_ucblocks, -}; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -MODULE_DESCRIPTION("Zarlink MT352 DVB-T Demodulator driver"); -MODULE_AUTHOR("Holger Waechtler, Daniel Mack, Antonio Mancuso"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(mt352_attach); |