AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-14 23:56:48 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
d52741728a
linux_dsm_epyc7002/drivers/media/dvb-frontends/as102_fe.c
Thomas Gleixner 3e0a4e8580 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 44 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.032047323@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:39:02 +02:00

471 lines
10 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Abilis Systems Single DVB-T Receiver
* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
* Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
*/
#include <media/dvb_frontend.h>
#include "as102_fe.h"
struct as102_state {
struct dvb_frontend frontend;
struct as10x_demod_stats demod_stats;
const struct as102_fe_ops *ops;
void *priv;
uint8_t elna_cfg;
/* signal strength */
uint16_t signal_strength;
/* bit error rate */
uint32_t ber;
};
static uint8_t as102_fe_get_code_rate(enum fe_code_rate 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 int as102_fe_set_frontend(struct dvb_frontend *fe)
{
struct as102_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct as10x_tune_args tune_args = { 0 };
/* set frequency */
tune_args.freq = c->frequency / 1000;
/* fix interleaving_mode */
tune_args.interleaving_mode = INTLV_NATIVE;
switch (c->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 (c->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 (c->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 (c->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 (c->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;
}
pr_debug("as102: tuner parameters: freq: %d bw: 0x%02x gi: 0x%02x\n",
c->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) &&
((c->code_rate_LP == FEC_NONE) ||
(c->code_rate_HP == FEC_NONE))) {
if (c->code_rate_LP == FEC_NONE) {
tune_args.hier_select = HIER_HIGH_PRIORITY;
tune_args.code_rate =
as102_fe_get_code_rate(c->code_rate_HP);
}
if (c->code_rate_HP == FEC_NONE) {
tune_args.hier_select = HIER_LOW_PRIORITY;
tune_args.code_rate =
as102_fe_get_code_rate(c->code_rate_LP);
}
pr_debug("as102: \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(c->code_rate_HP);
}
/* Set frontend arguments */
return state->ops->set_tune(state->priv, &tune_args);
}
static int as102_fe_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
struct as102_state *state = fe->demodulator_priv;
int ret = 0;
struct as10x_tps tps = { 0 };
/* send abilis command: GET_TPS */
ret = state->ops->get_tps(state->priv, &tps);
if (ret < 0)
return ret;
/* extract constellation */
switch (tps.modulation) {
case CONST_QPSK:
c->modulation = QPSK;
break;
case CONST_QAM16:
c->modulation = QAM_16;
break;
case CONST_QAM64:
c->modulation = QAM_64;
break;
}
/* extract hierarchy */
switch (tps.hierarchy) {
case HIER_NONE:
c->hierarchy = HIERARCHY_NONE;
break;
case HIER_ALPHA_1:
c->hierarchy = HIERARCHY_1;
break;
case HIER_ALPHA_2:
c->hierarchy = HIERARCHY_2;
break;
case HIER_ALPHA_4:
c->hierarchy = HIERARCHY_4;
break;
}
/* extract code rate HP */
switch (tps.code_rate_HP) {
case CODE_RATE_1_2:
c->code_rate_HP = FEC_1_2;
break;
case CODE_RATE_2_3:
c->code_rate_HP = FEC_2_3;
break;
case CODE_RATE_3_4:
c->code_rate_HP = FEC_3_4;
break;
case CODE_RATE_5_6:
c->code_rate_HP = FEC_5_6;
break;
case CODE_RATE_7_8:
c->code_rate_HP = FEC_7_8;
break;
}
/* extract code rate LP */
switch (tps.code_rate_LP) {
case CODE_RATE_1_2:
c->code_rate_LP = FEC_1_2;
break;
case CODE_RATE_2_3:
c->code_rate_LP = FEC_2_3;
break;
case CODE_RATE_3_4:
c->code_rate_LP = FEC_3_4;
break;
case CODE_RATE_5_6:
c->code_rate_LP = FEC_5_6;
break;
case CODE_RATE_7_8:
c->code_rate_LP = FEC_7_8;
break;
}
/* extract guard interval */
switch (tps.guard_interval) {
case GUARD_INT_1_32:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case GUARD_INT_1_16:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case GUARD_INT_1_8:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case GUARD_INT_1_4:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
}
/* extract transmission mode */
switch (tps.transmission_mode) {
case TRANS_MODE_2K:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case TRANS_MODE_8K:
c->transmission_mode = TRANSMISSION_MODE_8K;
break;
}
return 0;
}
static int as102_fe_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *settings) {
settings->min_delay_ms = 1000;
return 0;
}
static int as102_fe_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int ret = 0;
struct as102_state *state = fe->demodulator_priv;
struct as10x_tune_status tstate = { 0 };
/* send abilis command: GET_TUNE_STATUS */
ret = state->ops->get_status(state->priv, &tstate);
if (ret < 0)
return ret;
state->signal_strength = tstate.signal_strength;
state->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 |
FE_HAS_VITERBI;
break;
case TUNE_STATUS_STREAM_TUNED:
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC |
FE_HAS_LOCK | FE_HAS_VITERBI;
break;
default:
*status = TUNE_STATUS_NOT_TUNED;
}
pr_debug("as102: 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)) {
memset(&state->demod_stats, 0, sizeof(state->demod_stats));
return 0;
}
ret = state->ops->get_stats(state->priv, &state->demod_stats);
if (ret < 0)
memset(&state->demod_stats, 0, sizeof(state->demod_stats));
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_state *state = fe->demodulator_priv;
*snr = state->demod_stats.mer;
return 0;
}
static int as102_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct as102_state *state = fe->demodulator_priv;
*ber = state->ber;
return 0;
}
static int as102_fe_read_signal_strength(struct dvb_frontend *fe,
u16 *strength)
{
struct as102_state *state = fe->demodulator_priv;
*strength = (((0xffff * 400) * state->signal_strength + 41000) * 2);
return 0;
}
static int as102_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct as102_state *state = fe->demodulator_priv;
if (state->demod_stats.has_started)
*ucblocks = state->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_state *state = fe->demodulator_priv;
return state->ops->stream_ctrl(state->priv, acquire,
state->elna_cfg);
}
static void as102_fe_release(struct dvb_frontend *fe)
{
struct as102_state *state = fe->demodulator_priv;
kfree(state);
}
static const struct dvb_frontend_ops as102_fe_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "Abilis AS102 DVB-T",
.frequency_min_hz = 174 * MHz,
.frequency_max_hz = 862 * MHz,
.frequency_stepsize_hz = 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,
.release = as102_fe_release,
};
struct dvb_frontend *as102_attach(const char *name,
const struct as102_fe_ops *ops,
void *priv,
uint8_t elna_cfg)
{
struct as102_state *state;
struct dvb_frontend *fe;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
fe = &state->frontend;
fe->demodulator_priv = state;
state->ops = ops;
state->priv = priv;
state->elna_cfg = elna_cfg;
/* init frontend callback ops */
memcpy(&fe->ops, &as102_fe_ops, sizeof(struct dvb_frontend_ops));
strscpy(fe->ops.info.name, name, sizeof(fe->ops.info.name));
return fe;
}
EXPORT_SYMBOL_GPL(as102_attach);
MODULE_DESCRIPTION("as102-fe");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");
Reference in New Issue View Git Blame Copy Permalink