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289 lines
7.3 KiB
289 lines
7.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* TTUSB DEC Frontend Driver |
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* |
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* Copyright (C) 2003-2004 Alex Woods <[email protected]> |
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*/ |
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#include <media/dvb_frontend.h> |
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#include "ttusbdecfe.h" |
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#define LOF_HI 10600000 |
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#define LOF_LO 9750000 |
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struct ttusbdecfe_state { |
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/* configuration settings */ |
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const struct ttusbdecfe_config* config; |
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struct dvb_frontend frontend; |
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u8 hi_band; |
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u8 voltage; |
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}; |
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static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe, |
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enum fe_status *status) |
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{ |
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*status = FE_HAS_SIGNAL | FE_HAS_VITERBI | |
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FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; |
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return 0; |
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} |
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static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe, |
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enum fe_status *status) |
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{ |
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struct ttusbdecfe_state* state = fe->demodulator_priv; |
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u8 b[] = { 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00 }; |
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u8 result[4]; |
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int len, ret; |
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*status=0; |
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ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); |
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if(ret) |
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return ret; |
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if(len != 4) { |
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printk(KERN_ERR "%s: unexpected reply\n", __func__); |
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return -EIO; |
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} |
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switch(result[3]) { |
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case 1: /* not tuned yet */ |
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case 2: /* no signal/no lock*/ |
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break; |
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case 3: /* signal found and locked*/ |
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*status = FE_HAS_SIGNAL | FE_HAS_VITERBI | |
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FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; |
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break; |
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case 4: |
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*status = FE_TIMEDOUT; |
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break; |
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default: |
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pr_info("%s: returned unknown value: %d\n", |
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__func__, result[3]); |
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return -EIO; |
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} |
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return 0; |
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} |
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static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe) |
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{ |
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struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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u8 b[] = { 0x00, 0x00, 0x00, 0x03, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x01, |
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0x00, 0x00, 0x00, 0xff, |
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0x00, 0x00, 0x00, 0xff }; |
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__be32 freq = htonl(p->frequency / 1000); |
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memcpy(&b[4], &freq, sizeof (u32)); |
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state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); |
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return 0; |
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} |
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static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, |
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struct dvb_frontend_tune_settings* fesettings) |
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{ |
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fesettings->min_delay_ms = 1500; |
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/* Drift compensation makes no sense for DVB-T */ |
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fesettings->step_size = 0; |
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fesettings->max_drift = 0; |
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return 0; |
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} |
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static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe) |
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{ |
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struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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u8 b[] = { 0x00, 0x00, 0x00, 0x01, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x01, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00 }; |
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__be32 freq; |
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__be32 sym_rate; |
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__be32 band; |
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__be32 lnb_voltage; |
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freq = htonl(p->frequency + |
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(state->hi_band ? LOF_HI : LOF_LO)); |
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memcpy(&b[4], &freq, sizeof(u32)); |
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sym_rate = htonl(p->symbol_rate); |
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memcpy(&b[12], &sym_rate, sizeof(u32)); |
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band = htonl(state->hi_band ? LOF_HI : LOF_LO); |
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memcpy(&b[24], &band, sizeof(u32)); |
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lnb_voltage = htonl(state->voltage); |
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memcpy(&b[28], &lnb_voltage, sizeof(u32)); |
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state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); |
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return 0; |
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} |
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static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) |
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{ |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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u8 b[] = { 0x00, 0xff, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00 }; |
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if (cmd->msg_len > sizeof(b) - 4) |
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return -EINVAL; |
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memcpy(&b[4], cmd->msg, cmd->msg_len); |
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state->config->send_command(fe, 0x72, |
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sizeof(b) - (6 - cmd->msg_len), b, |
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NULL, NULL); |
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return 0; |
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} |
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static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend *fe, |
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enum fe_sec_tone_mode tone) |
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{ |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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state->hi_band = (SEC_TONE_ON == tone); |
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return 0; |
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} |
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static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend *fe, |
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enum fe_sec_voltage voltage) |
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{ |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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switch (voltage) { |
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case SEC_VOLTAGE_13: |
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state->voltage = 13; |
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break; |
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case SEC_VOLTAGE_18: |
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state->voltage = 18; |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static void ttusbdecfe_release(struct dvb_frontend* fe) |
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{ |
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; |
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kfree(state); |
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} |
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static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops; |
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struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) |
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{ |
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struct ttusbdecfe_state* state = NULL; |
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/* allocate memory for the internal state */ |
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state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); |
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if (state == NULL) |
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return NULL; |
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/* setup the state */ |
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state->config = config; |
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/* create dvb_frontend */ |
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memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); |
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state->frontend.demodulator_priv = state; |
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return &state->frontend; |
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} |
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static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops; |
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struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) |
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{ |
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struct ttusbdecfe_state* state = NULL; |
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/* allocate memory for the internal state */ |
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state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); |
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if (state == NULL) |
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return NULL; |
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/* setup the state */ |
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state->config = config; |
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state->voltage = 0; |
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state->hi_band = 0; |
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/* create dvb_frontend */ |
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memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); |
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state->frontend.demodulator_priv = state; |
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return &state->frontend; |
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} |
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static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { |
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.delsys = { SYS_DVBT }, |
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.info = { |
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.name = "TechnoTrend/Hauppauge DEC2000-t Frontend", |
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.frequency_min_hz = 51 * MHz, |
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.frequency_max_hz = 858 * MHz, |
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.frequency_stepsize_hz = 62500, |
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
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FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | |
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FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | |
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FE_CAN_HIERARCHY_AUTO, |
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}, |
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.release = ttusbdecfe_release, |
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.set_frontend = ttusbdecfe_dvbt_set_frontend, |
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.get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, |
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.read_status = ttusbdecfe_dvbt_read_status, |
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}; |
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static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { |
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.delsys = { SYS_DVBS }, |
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.info = { |
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.name = "TechnoTrend/Hauppauge DEC3000-s Frontend", |
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.frequency_min_hz = 950 * MHz, |
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.frequency_max_hz = 2150 * MHz, |
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.frequency_stepsize_hz = 125 * kHz, |
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.symbol_rate_min = 1000000, /* guessed */ |
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.symbol_rate_max = 45000000, /* guessed */ |
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
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FE_CAN_QPSK |
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}, |
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.release = ttusbdecfe_release, |
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.set_frontend = ttusbdecfe_dvbs_set_frontend, |
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.read_status = ttusbdecfe_dvbs_read_status, |
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.diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, |
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.set_voltage = ttusbdecfe_dvbs_set_voltage, |
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.set_tone = ttusbdecfe_dvbs_set_tone, |
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}; |
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MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); |
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MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); |
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MODULE_LICENSE("GPL"); |
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EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); |
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EXPORT_SYMBOL(ttusbdecfe_dvbs_attach);
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