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286 lines
6.5 KiB
286 lines
6.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Driver for Dummy Frontend |
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* |
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* Written by Emard <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <media/dvb_frontend.h> |
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#include "dvb_dummy_fe.h" |
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struct dvb_dummy_fe_state { |
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struct dvb_frontend frontend; |
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}; |
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static int dvb_dummy_fe_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 |
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| FE_HAS_CARRIER |
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| FE_HAS_VITERBI |
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| FE_HAS_SYNC |
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| FE_HAS_LOCK; |
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return 0; |
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} |
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static int dvb_dummy_fe_read_ber(struct dvb_frontend *fe, u32 *ber) |
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{ |
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*ber = 0; |
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return 0; |
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} |
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static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend *fe, |
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u16 *strength) |
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{ |
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*strength = 0; |
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return 0; |
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} |
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static int dvb_dummy_fe_read_snr(struct dvb_frontend *fe, u16 *snr) |
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{ |
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*snr = 0; |
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return 0; |
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} |
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static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
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{ |
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*ucblocks = 0; |
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return 0; |
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} |
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/* |
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* Should only be implemented if it actually reads something from the hardware. |
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* Also, it should check for the locks, in order to avoid report wrong data |
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* to userspace. |
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*/ |
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static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe, |
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struct dtv_frontend_properties *p) |
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{ |
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return 0; |
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} |
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static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe) |
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{ |
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if (fe->ops.tuner_ops.set_params) { |
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fe->ops.tuner_ops.set_params(fe); |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 0); |
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} |
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return 0; |
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} |
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static int dvb_dummy_fe_sleep(struct dvb_frontend *fe) |
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{ |
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return 0; |
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} |
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static int dvb_dummy_fe_init(struct dvb_frontend *fe) |
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{ |
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return 0; |
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} |
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static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe, |
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enum fe_sec_tone_mode tone) |
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{ |
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return 0; |
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} |
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static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe, |
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enum fe_sec_voltage voltage) |
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{ |
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return 0; |
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} |
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static void dvb_dummy_fe_release(struct dvb_frontend *fe) |
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{ |
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struct dvb_dummy_fe_state *state = fe->demodulator_priv; |
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kfree(state); |
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} |
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static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops; |
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struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void) |
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{ |
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struct dvb_dummy_fe_state *state = NULL; |
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/* allocate memory for the internal state */ |
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); |
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if (!state) |
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return NULL; |
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/* create dvb_frontend */ |
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memcpy(&state->frontend.ops, |
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&dvb_dummy_fe_ofdm_ops, |
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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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EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach); |
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static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops; |
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struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) |
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{ |
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struct dvb_dummy_fe_state *state = NULL; |
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/* allocate memory for the internal state */ |
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); |
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if (!state) |
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return NULL; |
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/* create dvb_frontend */ |
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memcpy(&state->frontend.ops, |
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&dvb_dummy_fe_qpsk_ops, |
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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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EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach); |
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static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops; |
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struct dvb_frontend *dvb_dummy_fe_qam_attach(void) |
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{ |
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struct dvb_dummy_fe_state *state = NULL; |
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/* allocate memory for the internal state */ |
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); |
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if (!state) |
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return NULL; |
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/* create dvb_frontend */ |
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memcpy(&state->frontend.ops, |
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&dvb_dummy_fe_qam_ops, |
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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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EXPORT_SYMBOL(dvb_dummy_fe_qam_attach); |
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static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = { |
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.delsys = { SYS_DVBT }, |
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.info = { |
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.name = "Dummy DVB-T", |
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.frequency_min_hz = 0, |
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.frequency_max_hz = 863250 * kHz, |
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.frequency_stepsize_hz = 62500, |
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.caps = FE_CAN_FEC_1_2 | |
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FE_CAN_FEC_2_3 | |
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FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_4_5 | |
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FE_CAN_FEC_5_6 | |
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FE_CAN_FEC_6_7 | |
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FE_CAN_FEC_7_8 | |
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FE_CAN_FEC_8_9 | |
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FE_CAN_FEC_AUTO | |
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FE_CAN_QAM_16 | |
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FE_CAN_QAM_64 | |
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FE_CAN_QAM_AUTO | |
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FE_CAN_TRANSMISSION_MODE_AUTO | |
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FE_CAN_GUARD_INTERVAL_AUTO | |
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FE_CAN_HIERARCHY_AUTO, |
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}, |
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.release = dvb_dummy_fe_release, |
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.init = dvb_dummy_fe_init, |
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.sleep = dvb_dummy_fe_sleep, |
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.set_frontend = dvb_dummy_fe_set_frontend, |
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.get_frontend = dvb_dummy_fe_get_frontend, |
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.read_status = dvb_dummy_fe_read_status, |
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.read_ber = dvb_dummy_fe_read_ber, |
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.read_signal_strength = dvb_dummy_fe_read_signal_strength, |
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.read_snr = dvb_dummy_fe_read_snr, |
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.read_ucblocks = dvb_dummy_fe_read_ucblocks, |
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}; |
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static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = { |
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.delsys = { SYS_DVBC_ANNEX_A }, |
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.info = { |
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.name = "Dummy DVB-C", |
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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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/* symbol_rate_min: SACLK/64 == (XIN/2)/64 */ |
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.symbol_rate_min = (57840000 / 2) / 64, |
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.symbol_rate_max = (57840000 / 2) / 4, /* SACLK/4 */ |
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.caps = FE_CAN_QAM_16 | |
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FE_CAN_QAM_32 | |
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FE_CAN_QAM_64 | |
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FE_CAN_QAM_128 | |
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FE_CAN_QAM_256 | |
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FE_CAN_FEC_AUTO | |
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FE_CAN_INVERSION_AUTO |
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}, |
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.release = dvb_dummy_fe_release, |
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.init = dvb_dummy_fe_init, |
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.sleep = dvb_dummy_fe_sleep, |
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.set_frontend = dvb_dummy_fe_set_frontend, |
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.get_frontend = dvb_dummy_fe_get_frontend, |
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.read_status = dvb_dummy_fe_read_status, |
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.read_ber = dvb_dummy_fe_read_ber, |
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.read_signal_strength = dvb_dummy_fe_read_signal_strength, |
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.read_snr = dvb_dummy_fe_read_snr, |
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.read_ucblocks = dvb_dummy_fe_read_ucblocks, |
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}; |
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static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = { |
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.delsys = { SYS_DVBS }, |
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.info = { |
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.name = "Dummy DVB-S", |
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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 = 250 * kHz, |
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.frequency_tolerance_hz = 29500 * kHz, |
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.symbol_rate_min = 1000000, |
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.symbol_rate_max = 45000000, |
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.caps = FE_CAN_INVERSION_AUTO | |
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FE_CAN_FEC_1_2 | |
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FE_CAN_FEC_2_3 | |
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FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_5_6 | |
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FE_CAN_FEC_7_8 | |
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FE_CAN_FEC_AUTO | |
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FE_CAN_QPSK |
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}, |
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.release = dvb_dummy_fe_release, |
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.init = dvb_dummy_fe_init, |
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.sleep = dvb_dummy_fe_sleep, |
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.set_frontend = dvb_dummy_fe_set_frontend, |
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.get_frontend = dvb_dummy_fe_get_frontend, |
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.read_status = dvb_dummy_fe_read_status, |
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.read_ber = dvb_dummy_fe_read_ber, |
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.read_signal_strength = dvb_dummy_fe_read_signal_strength, |
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.read_snr = dvb_dummy_fe_read_snr, |
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.read_ucblocks = dvb_dummy_fe_read_ucblocks, |
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.set_voltage = dvb_dummy_fe_set_voltage, |
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.set_tone = dvb_dummy_fe_set_tone, |
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}; |
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MODULE_DESCRIPTION("DVB DUMMY Frontend"); |
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MODULE_AUTHOR("Emard"); |
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MODULE_LICENSE("GPL");
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