287 lines
6.5 KiB
C
287 lines
6.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Driver for Dummy Frontend
|
||
|
|
*
|
||
|
|
* Written by Emard <emard@softhome.net>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
|
||
|
|
#include <media/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,
|
||
|
|
enum fe_status *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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Should only be implemented if it actually reads something from the hardware.
|
||
|
|
* Also, it should check for the locks, in order to avoid report wrong data
|
||
|
|
* to userspace.
|
||
|
|
*/
|
||
|
|
static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe,
|
||
|
|
struct dtv_frontend_properties *p)
|
||
|
|
{
|
||
|
|
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,
|
||
|
|
enum fe_sec_tone_mode tone)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
|
||
|
|
enum fe_sec_voltage 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 const 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)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
|
||
|
|
|
||
|
|
static const 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)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
|
||
|
|
|
||
|
|
static const 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)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
|
||
|
|
|
||
|
|
static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
|
||
|
|
.delsys = { SYS_DVBT },
|
||
|
|
.info = {
|
||
|
|
.name = "Dummy DVB-T",
|
||
|
|
.frequency_min_hz = 0,
|
||
|
|
.frequency_max_hz = 863250 * kHz,
|
||
|
|
.frequency_stepsize_hz = 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 const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
|
||
|
|
.delsys = { SYS_DVBC_ANNEX_A },
|
||
|
|
.info = {
|
||
|
|
.name = "Dummy DVB-C",
|
||
|
|
.frequency_min_hz = 51 * MHz,
|
||
|
|
.frequency_max_hz = 858 * MHz,
|
||
|
|
.frequency_stepsize_hz = 62500,
|
||
|
|
/* symbol_rate_min: SACLK/64 == (XIN/2)/64 */
|
||
|
|
.symbol_rate_min = (57840000 / 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 const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
|
||
|
|
.delsys = { SYS_DVBS },
|
||
|
|
.info = {
|
||
|
|
.name = "Dummy DVB-S",
|
||
|
|
.frequency_min_hz = 950 * MHz,
|
||
|
|
.frequency_max_hz = 2150 * MHz,
|
||
|
|
.frequency_stepsize_hz = 250 * kHz,
|
||
|
|
.frequency_tolerance_hz = 29500 * kHz,
|
||
|
|
.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");
|