diff options
Diffstat (limited to 'drivers/staging/media/as102/as102_fe.c')
| -rw-r--r-- | drivers/staging/media/as102/as102_fe.c | 571 |
1 files changed, 0 insertions, 571 deletions
diff --git a/drivers/staging/media/as102/as102_fe.c b/drivers/staging/media/as102/as102_fe.c deleted file mode 100644 index b686b7617cdc..000000000000 --- a/drivers/staging/media/as102/as102_fe.c +++ /dev/null @@ -1,571 +0,0 @@ -/* - * Abilis Systems Single DVB-T Receiver - * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com> - * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com> - * - * 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, 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 "as102_drv.h" -#include "as10x_types.h" -#include "as10x_cmd.h" - -static void as10x_fe_copy_tps_parameters(struct dtv_frontend_properties *dst, - struct as10x_tps *src); - -static void as102_fe_copy_tune_parameters(struct as10x_tune_args *dst, - struct dtv_frontend_properties *src); - -static int as102_fe_set_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - int ret = 0; - struct as102_dev_t *dev; - struct as10x_tune_args tune_args = { 0 }; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - if (mutex_lock_interruptible(&dev->bus_adap.lock)) - return -EBUSY; - - as102_fe_copy_tune_parameters(&tune_args, p); - - /* send abilis command: SET_TUNE */ - ret = as10x_cmd_set_tune(&dev->bus_adap, &tune_args); - if (ret != 0) - dprintk(debug, "as10x_cmd_set_tune failed. (err = %d)\n", ret); - - mutex_unlock(&dev->bus_adap.lock); - - return (ret < 0) ? -EINVAL : 0; -} - -static int as102_fe_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - int ret = 0; - struct as102_dev_t *dev; - struct as10x_tps tps = { 0 }; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -EINVAL; - - if (mutex_lock_interruptible(&dev->bus_adap.lock)) - return -EBUSY; - - /* send abilis command: GET_TPS */ - ret = as10x_cmd_get_tps(&dev->bus_adap, &tps); - - if (ret == 0) - as10x_fe_copy_tps_parameters(p, &tps); - - mutex_unlock(&dev->bus_adap.lock); - - return (ret < 0) ? -EINVAL : 0; -} - -static int as102_fe_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *settings) { - -#if 0 - dprintk(debug, "step_size = %d\n", settings->step_size); - dprintk(debug, "max_drift = %d\n", settings->max_drift); - dprintk(debug, "min_delay_ms = %d -> %d\n", settings->min_delay_ms, - 1000); -#endif - - settings->min_delay_ms = 1000; - - return 0; -} - - -static int as102_fe_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - int ret = 0; - struct as102_dev_t *dev; - struct as10x_tune_status tstate = { 0 }; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - if (mutex_lock_interruptible(&dev->bus_adap.lock)) - return -EBUSY; - - /* send abilis command: GET_TUNE_STATUS */ - ret = as10x_cmd_get_tune_status(&dev->bus_adap, &tstate); - if (ret < 0) { - dprintk(debug, "as10x_cmd_get_tune_status failed (err = %d)\n", - ret); - goto out; - } - - dev->signal_strength = tstate.signal_strength; - dev->ber = tstate.BER; - - switch (tstate.tune_state) { - case TUNE_STATUS_SIGNAL_DVB_OK: - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; - break; - case TUNE_STATUS_STREAM_DETECTED: - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC; - break; - case TUNE_STATUS_STREAM_TUNED: - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | - FE_HAS_LOCK; - break; - default: - *status = TUNE_STATUS_NOT_TUNED; - } - - dprintk(debug, "tuner status: 0x%02x, strength %d, per: %d, ber: %d\n", - tstate.tune_state, tstate.signal_strength, - tstate.PER, tstate.BER); - - if (*status & FE_HAS_LOCK) { - if (as10x_cmd_get_demod_stats(&dev->bus_adap, - (struct as10x_demod_stats *) &dev->demod_stats) < 0) { - memset(&dev->demod_stats, 0, sizeof(dev->demod_stats)); - dprintk(debug, - "as10x_cmd_get_demod_stats failed (probably not tuned)\n"); - } else { - dprintk(debug, - "demod status: fc: 0x%08x, bad fc: 0x%08x, " - "bytes corrected: 0x%08x , MER: 0x%04x\n", - dev->demod_stats.frame_count, - dev->demod_stats.bad_frame_count, - dev->demod_stats.bytes_fixed_by_rs, - dev->demod_stats.mer); - } - } else { - memset(&dev->demod_stats, 0, sizeof(dev->demod_stats)); - } - -out: - mutex_unlock(&dev->bus_adap.lock); - return ret; -} - -/* - * Note: - * - in AS102 SNR=MER - * - the SNR will be returned in linear terms, i.e. not in dB - * - the accuracy equals ±2dB for a SNR range from 4dB to 30dB - * - the accuracy is >2dB for SNR values outside this range - */ -static int as102_fe_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - struct as102_dev_t *dev; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - *snr = dev->demod_stats.mer; - - return 0; -} - -static int as102_fe_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - struct as102_dev_t *dev; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - *ber = dev->ber; - - return 0; -} - -static int as102_fe_read_signal_strength(struct dvb_frontend *fe, - u16 *strength) -{ - struct as102_dev_t *dev; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - *strength = (((0xffff * 400) * dev->signal_strength + 41000) * 2); - - return 0; -} - -static int as102_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - struct as102_dev_t *dev; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - if (dev->demod_stats.has_started) - *ucblocks = dev->demod_stats.bad_frame_count; - else - *ucblocks = 0; - - return 0; -} - -static int as102_fe_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) -{ - struct as102_dev_t *dev; - int ret; - - dev = (struct as102_dev_t *) fe->tuner_priv; - if (dev == NULL) - return -ENODEV; - - if (mutex_lock_interruptible(&dev->bus_adap.lock)) - return -EBUSY; - - if (acquire) { - if (elna_enable) - as10x_cmd_set_context(&dev->bus_adap, - CONTEXT_LNA, dev->elna_cfg); - - ret = as10x_cmd_turn_on(&dev->bus_adap); - } else { - ret = as10x_cmd_turn_off(&dev->bus_adap); - } - - mutex_unlock(&dev->bus_adap.lock); - - return ret; -} - -static struct dvb_frontend_ops as102_fe_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "Unknown AS102 device", - .frequency_min = 174000000, - .frequency_max = 862000000, - .frequency_stepsize = 166667, - .caps = FE_CAN_INVERSION_AUTO - | 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_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QPSK - | 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 - }, - - .set_frontend = as102_fe_set_frontend, - .get_frontend = as102_fe_get_frontend, - .get_tune_settings = as102_fe_get_tune_settings, - - .read_status = as102_fe_read_status, - .read_snr = as102_fe_read_snr, - .read_ber = as102_fe_read_ber, - .read_signal_strength = as102_fe_read_signal_strength, - .read_ucblocks = as102_fe_read_ucblocks, - .ts_bus_ctrl = as102_fe_ts_bus_ctrl, -}; - -int as102_dvb_unregister_fe(struct dvb_frontend *fe) -{ - /* unregister frontend */ - dvb_unregister_frontend(fe); - - /* detach frontend */ - dvb_frontend_detach(fe); - - return 0; -} - -int as102_dvb_register_fe(struct as102_dev_t *as102_dev, - struct dvb_frontend *dvb_fe) -{ - int errno; - struct dvb_adapter *dvb_adap; - - if (as102_dev == NULL) - return -EINVAL; - - /* extract dvb_adapter */ - dvb_adap = &as102_dev->dvb_adap; - - /* init frontend callback ops */ - memcpy(&dvb_fe->ops, &as102_fe_ops, sizeof(struct dvb_frontend_ops)); - strncpy(dvb_fe->ops.info.name, as102_dev->name, - sizeof(dvb_fe->ops.info.name)); - - /* register dvb frontend */ - errno = dvb_register_frontend(dvb_adap, dvb_fe); - if (errno == 0) - dvb_fe->tuner_priv = as102_dev; - - return errno; -} - -static void as10x_fe_copy_tps_parameters(struct dtv_frontend_properties *fe_tps, - struct as10x_tps *as10x_tps) -{ - - /* extract constellation */ - switch (as10x_tps->modulation) { - case CONST_QPSK: - fe_tps->modulation = QPSK; - break; - case CONST_QAM16: - fe_tps->modulation = QAM_16; - break; - case CONST_QAM64: - fe_tps->modulation = QAM_64; - break; - } - - /* extract hierarchy */ - switch (as10x_tps->hierarchy) { - case HIER_NONE: - fe_tps->hierarchy = HIERARCHY_NONE; - break; - case HIER_ALPHA_1: - fe_tps->hierarchy = HIERARCHY_1; - break; - case HIER_ALPHA_2: - fe_tps->hierarchy = HIERARCHY_2; - break; - case HIER_ALPHA_4: - fe_tps->hierarchy = HIERARCHY_4; - break; - } - - /* extract code rate HP */ - switch (as10x_tps->code_rate_HP) { - case CODE_RATE_1_2: - fe_tps->code_rate_HP = FEC_1_2; - break; - case CODE_RATE_2_3: - fe_tps->code_rate_HP = FEC_2_3; - break; - case CODE_RATE_3_4: - fe_tps->code_rate_HP = FEC_3_4; - break; - case CODE_RATE_5_6: - fe_tps->code_rate_HP = FEC_5_6; - break; - case CODE_RATE_7_8: - fe_tps->code_rate_HP = FEC_7_8; - break; - } - - /* extract code rate LP */ - switch (as10x_tps->code_rate_LP) { - case CODE_RATE_1_2: - fe_tps->code_rate_LP = FEC_1_2; - break; - case CODE_RATE_2_3: - fe_tps->code_rate_LP = FEC_2_3; - break; - case CODE_RATE_3_4: - fe_tps->code_rate_LP = FEC_3_4; - break; - case CODE_RATE_5_6: - fe_tps->code_rate_LP = FEC_5_6; - break; - case CODE_RATE_7_8: - fe_tps->code_rate_LP = FEC_7_8; - break; - } - - /* extract guard interval */ - switch (as10x_tps->guard_interval) { - case GUARD_INT_1_32: - fe_tps->guard_interval = GUARD_INTERVAL_1_32; - break; - case GUARD_INT_1_16: - fe_tps->guard_interval = GUARD_INTERVAL_1_16; - break; - case GUARD_INT_1_8: - fe_tps->guard_interval = GUARD_INTERVAL_1_8; - break; - case GUARD_INT_1_4: - fe_tps->guard_interval = GUARD_INTERVAL_1_4; - break; - } - - /* extract transmission mode */ - switch (as10x_tps->transmission_mode) { - case TRANS_MODE_2K: - fe_tps->transmission_mode = TRANSMISSION_MODE_2K; - break; - case TRANS_MODE_8K: - fe_tps->transmission_mode = TRANSMISSION_MODE_8K; - break; - } -} - -static uint8_t as102_fe_get_code_rate(fe_code_rate_t arg) -{ - uint8_t c; - - switch (arg) { - case FEC_1_2: - c = CODE_RATE_1_2; - break; - case FEC_2_3: - c = CODE_RATE_2_3; - break; - case FEC_3_4: - c = CODE_RATE_3_4; - break; - case FEC_5_6: - c = CODE_RATE_5_6; - break; - case FEC_7_8: - c = CODE_RATE_7_8; - break; - default: - c = CODE_RATE_UNKNOWN; - break; - } - - return c; -} - -static void as102_fe_copy_tune_parameters(struct as10x_tune_args *tune_args, - struct dtv_frontend_properties *params) -{ - - /* set frequency */ - tune_args->freq = params->frequency / 1000; - - /* fix interleaving_mode */ - tune_args->interleaving_mode = INTLV_NATIVE; - - switch (params->bandwidth_hz) { - case 8000000: - tune_args->bandwidth = BW_8_MHZ; - break; - case 7000000: - tune_args->bandwidth = BW_7_MHZ; - break; - case 6000000: - tune_args->bandwidth = BW_6_MHZ; - break; - default: - tune_args->bandwidth = BW_8_MHZ; - } - - switch (params->guard_interval) { - case GUARD_INTERVAL_1_32: - tune_args->guard_interval = GUARD_INT_1_32; - break; - case GUARD_INTERVAL_1_16: - tune_args->guard_interval = GUARD_INT_1_16; - break; - case GUARD_INTERVAL_1_8: - tune_args->guard_interval = GUARD_INT_1_8; - break; - case GUARD_INTERVAL_1_4: - tune_args->guard_interval = GUARD_INT_1_4; - break; - case GUARD_INTERVAL_AUTO: - default: - tune_args->guard_interval = GUARD_UNKNOWN; - break; - } - - switch (params->modulation) { - case QPSK: - tune_args->modulation = CONST_QPSK; - break; - case QAM_16: - tune_args->modulation = CONST_QAM16; - break; - case QAM_64: - tune_args->modulation = CONST_QAM64; - break; - default: - tune_args->modulation = CONST_UNKNOWN; - break; - } - - switch (params->transmission_mode) { - case TRANSMISSION_MODE_2K: - tune_args->transmission_mode = TRANS_MODE_2K; - break; - case TRANSMISSION_MODE_8K: - tune_args->transmission_mode = TRANS_MODE_8K; - break; - default: - tune_args->transmission_mode = TRANS_MODE_UNKNOWN; - } - - switch (params->hierarchy) { - case HIERARCHY_NONE: - tune_args->hierarchy = HIER_NONE; - break; - case HIERARCHY_1: - tune_args->hierarchy = HIER_ALPHA_1; - break; - case HIERARCHY_2: - tune_args->hierarchy = HIER_ALPHA_2; - break; - case HIERARCHY_4: - tune_args->hierarchy = HIER_ALPHA_4; - break; - case HIERARCHY_AUTO: - tune_args->hierarchy = HIER_UNKNOWN; - break; - } - - dprintk(debug, "tuner parameters: freq: %d bw: 0x%02x gi: 0x%02x\n", - params->frequency, - tune_args->bandwidth, - tune_args->guard_interval); - - /* - * Detect a hierarchy selection - * if HP/LP are both set to FEC_NONE, HP will be selected. - */ - if ((tune_args->hierarchy != HIER_NONE) && - ((params->code_rate_LP == FEC_NONE) || - (params->code_rate_HP == FEC_NONE))) { - - if (params->code_rate_LP == FEC_NONE) { - tune_args->hier_select = HIER_HIGH_PRIORITY; - tune_args->code_rate = - as102_fe_get_code_rate(params->code_rate_HP); - } - - if (params->code_rate_HP == FEC_NONE) { - tune_args->hier_select = HIER_LOW_PRIORITY; - tune_args->code_rate = - as102_fe_get_code_rate(params->code_rate_LP); - } - - dprintk(debug, - "\thierarchy: 0x%02x selected: %s code_rate_%s: 0x%02x\n", - tune_args->hierarchy, - tune_args->hier_select == HIER_HIGH_PRIORITY ? - "HP" : "LP", - tune_args->hier_select == HIER_HIGH_PRIORITY ? - "HP" : "LP", - tune_args->code_rate); - } else { - tune_args->code_rate = - as102_fe_get_code_rate(params->code_rate_HP); - } -} |