diff options
Diffstat (limited to 'drivers/media/dvb-frontends/dvb_dummy_fe.c')
| -rw-r--r-- | drivers/media/dvb-frontends/dvb_dummy_fe.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/dvb_dummy_fe.c b/drivers/media/dvb-frontends/dvb_dummy_fe.c new file mode 100644 index 00000000000..dcfc902c867 --- /dev/null +++ b/drivers/media/dvb-frontends/dvb_dummy_fe.c @@ -0,0 +1,276 @@ +/* + * Driver for Dummy Frontend + * + * Written by Emard <emard@softhome.net> + * + * 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/module.h> +#include <linux/init.h> +#include <linux/string.h> +#include <linux/slab.h> + +#include "dvb_frontend.h" +#include "dvb_dummy_fe.h" + + +struct dvb_dummy_fe_state { + struct dvb_frontend frontend; +}; + + +static int dvb_dummy_fe_read_status(struct dvb_frontend* fe, fe_status_t* status) +{ + *status = FE_HAS_SIGNAL + | FE_HAS_CARRIER + | FE_HAS_VITERBI + | FE_HAS_SYNC + | FE_HAS_LOCK; + + return 0; +} + +static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber) +{ + *ber = 0; + return 0; +} + +static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength) +{ + *strength = 0; + return 0; +} + +static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr) +{ + *snr = 0; + return 0; +} + +static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) +{ + *ucblocks = 0; + return 0; +} + +/* + * Only needed if it actually reads something from the hardware + */ +static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe) +{ + 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); + } + + return 0; +} + +static int dvb_dummy_fe_sleep(struct dvb_frontend* fe) +{ + return 0; +} + +static int dvb_dummy_fe_init(struct dvb_frontend* fe) +{ + return 0; +} + +static int dvb_dummy_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) +{ + return 0; +} + +static int dvb_dummy_fe_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) +{ + return 0; +} + +static void dvb_dummy_fe_release(struct dvb_frontend* fe) +{ + struct dvb_dummy_fe_state* state = fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops; + +struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void) +{ + struct dvb_dummy_fe_state* state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + kfree(state); + return NULL; +} + +static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops; + +struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) +{ + struct dvb_dummy_fe_state* state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + kfree(state); + return NULL; +} + +static struct dvb_frontend_ops dvb_dummy_fe_qam_ops; + +struct dvb_frontend *dvb_dummy_fe_qam_attach(void) +{ + struct dvb_dummy_fe_state* state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + kfree(state); + return NULL; +} + +static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "Dummy DVB-T", + .frequency_min = 0, + .frequency_max = 863250000, + .frequency_stepsize = 62500, + .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | + FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | + 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, + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, +}; + +static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = { + .delsys = { SYS_DVBC_ANNEX_A }, + .info = { + .name = "Dummy DVB-C", + .frequency_stepsize = 62500, + .frequency_min = 51000000, + .frequency_max = 858000000, + .symbol_rate_min = (57840000/2)/64, /* SACLK/64 == (XIN/2)/64 */ + .symbol_rate_max = (57840000/2)/4, /* SACLK/4 */ + .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 | + FE_CAN_QAM_128 | FE_CAN_QAM_256 | + FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, +}; + +static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "Dummy DVB-S", + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 250, /* kHz for QPSK frontends */ + .frequency_tolerance = 29500, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .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_QPSK + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, + + .set_voltage = dvb_dummy_fe_set_voltage, + .set_tone = dvb_dummy_fe_set_tone, +}; + +MODULE_DESCRIPTION("DVB DUMMY Frontend"); +MODULE_AUTHOR("Emard"); +MODULE_LICENSE("GPL"); + +EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach); +EXPORT_SYMBOL(dvb_dummy_fe_qam_attach); +EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach); |