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media: ddbridge/mci: split MaxSX8 specific code off to ddbridge-sx8.c 

Split off all code specific to the MaxSX8 cards to a separate ddbridge-sx8
module and hook it up in the Makefile. This also adds evaluation of the
mci_type to allow for using different attach handling for different cards.
As different cards can implement things differently (ie. support differing
frontend_ops, and have different base structs being put ontop of the
common mci_base struct), this introduces the mci_cfg struct which is
initially used to hold a few specifics to the -sx8 submodule. While at it,
the handling of the i/q mode is adjusted slightly. Besides this and
handling mci_base and sx8_base struct pointers where needed, all code
is copied unmodified from ddbridge-mci.c.

Picked up from the upstream dddvb GIT.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Daniel Scheller 2018-06-23 11:36:11 -04:00 committed by Mauro Carvalho Chehab
parent 84409a95bb
commit e552684809
7 changed files with 517 additions and 420 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/pci/ddbridge/Makefile
View File

@ -4,7 +4,8 @@
#
ddbridge-objs := ddbridge-main.o ddbridge-core.o ddbridge-ci.o \
ddbridge-hw.o ddbridge-i2c.o ddbridge-max.o ddbridge-mci.o
ddbridge-hw.o ddbridge-i2c.o ddbridge-max.o ddbridge-mci.o \
ddbridge-sx8.o
obj-$(CONFIG_DVB_DDBRIDGE) += ddbridge.o

2
drivers/media/pci/ddbridge/ddbridge-core.c
View File

@ -1593,7 +1593,7 @@ static int dvb_input_attach(struct ddb_input *input)
goto err_detach;
break;
case DDB_TUNER_MCI_SX8:
if (ddb_fe_attach_mci(input) < 0)
if (ddb_fe_attach_mci(input, port->type) < 0)
goto err_detach;
break;
default:

18
drivers/media/pci/ddbridge/ddbridge-max.c
View File

@ -457,21 +457,29 @@ int ddb_fe_attach_mxl5xx(struct ddb_input *input)
/******************************************************************************/
/* MAX MCI related functions */
int ddb_fe_attach_mci(struct ddb_input *input)
int ddb_fe_attach_mci(struct ddb_input *input, u32 type)
{
struct ddb *dev = input->port->dev;
struct ddb_dvb *dvb = &input->port->dvb[input->nr & 1];
struct ddb_port *port = input->port;
struct ddb_link *link = &dev->link[port->lnr];
int demod, tuner;
struct mci_cfg cfg;
demod = input->nr;
tuner = demod & 3;
if (fmode == 3)
tuner = 0;
dvb->fe = ddb_mci_attach(input, 0, demod, &dvb->set_input);
switch (type) {
case DDB_TUNER_MCI_SX8:
cfg = ddb_max_sx8_cfg;
if (fmode == 3)
tuner = 0;
break;
default:
return -EINVAL;
}
dvb->fe = ddb_mci_attach(input, &cfg, demod, &dvb->set_input);
if (!dvb->fe) {
dev_err(dev->dev, "No MAXSX8 found!\n");
dev_err(dev->dev, "No MCI card found!\n");
return -ENODEV;
}
if (!dvb->set_input) {

2
drivers/media/pci/ddbridge/ddbridge-max.h
View File

@ -25,6 +25,6 @@
int ddb_lnb_init_fmode(struct ddb *dev, struct ddb_link *link, u32 fm);
int ddb_fe_attach_mxl5xx(struct ddb_input *input);
int ddb_fe_attach_mci(struct ddb_input *input);
int ddb_fe_attach_mci(struct ddb_input *input, u32 type);
#endif /* _DDBRIDGE_MAX_H */

408
drivers/media/pci/ddbridge/ddbridge-mci.c
View File

@ -22,10 +22,6 @@
static LIST_HEAD(mci_list);
static const u32 MCLK = (1550000000 / 12);
static const u32 MAX_DEMOD_LDPC_BITRATE = (1550000000 / 6);
static const u32 MAX_LDPC_BITRATE = (720000000);
static int mci_reset(struct mci *state)
{
struct ddb_link *link = state->base->link;
@ -99,7 +95,7 @@ int ddb_mci_cmd(struct mci *state,
mutex_lock(&state->base->mci_lock);
stat = _mci_cmd_unlocked(state,
(u32 *)command, sizeof(*command) / sizeof(u32),
(u32 *)result, sizeof(*result) / sizeof(u32));
(u32 *)result, sizeof(*result) / sizeof(u32));
mutex_unlock(&state->base->mci_lock);
return stat;
}
@ -111,389 +107,6 @@ static void mci_handler(void *priv)
complete(&base->completion);
}
static void release(struct dvb_frontend *fe)
{
struct mci *state = fe->demodulator_priv;
state->base->count--;
if (state->base->count == 0) {
list_del(&state->base->mci_list);
kfree(state->base);
}
kfree(state);
}
static int get_info(struct dvb_frontend *fe)
{
int stat;
struct mci *state = fe->demodulator_priv;
struct mci_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.command = MCI_CMD_GETSIGNALINFO;
cmd.demod = state->demod;
stat = ddb_mci_cmd(state, &cmd, &state->signal_info);
return stat;
}
static int get_snr(struct dvb_frontend *fe)
{
struct mci *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
p->cnr.len = 1;
p->cnr.stat[0].scale = FE_SCALE_DECIBEL;
p->cnr.stat[0].svalue =
(s64)state->signal_info.dvbs2_signal_info.signal_to_noise
* 10;
return 0;
}
static int get_strength(struct dvb_frontend *fe)
{
struct mci *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
s32 str;
str = 100000 -
(state->signal_info.dvbs2_signal_info.channel_power
* 10 + 108750);
p->strength.len = 1;
p->strength.stat[0].scale = FE_SCALE_DECIBEL;
p->strength.stat[0].svalue = str;
return 0;
}
static int read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int stat;
struct mci *state = fe->demodulator_priv;
struct mci_command cmd;
struct mci_result res;
cmd.command = MCI_CMD_GETSTATUS;
cmd.demod = state->demod;
stat = ddb_mci_cmd(state, &cmd, &res);
if (stat)
return stat;
*status = 0x00;
get_info(fe);
get_strength(fe);
if (res.status == SX8_DEMOD_WAIT_MATYPE)
*status = 0x0f;
if (res.status == SX8_DEMOD_LOCKED) {
*status = 0x1f;
get_snr(fe);
}
return stat;
}
static int mci_set_tuner(struct dvb_frontend *fe, u32 tuner, u32 on)
{
struct mci *state = fe->demodulator_priv;
struct mci_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.tuner = state->tuner;
cmd.command = on ? SX8_CMD_INPUT_ENABLE : SX8_CMD_INPUT_DISABLE;
return ddb_mci_cmd(state, &cmd, NULL);
}
static int stop(struct dvb_frontend *fe)
{
struct mci *state = fe->demodulator_priv;
struct mci_command cmd;
u32 input = state->tuner;
memset(&cmd, 0, sizeof(cmd));
if (state->demod != DEMOD_UNUSED) {
cmd.command = MCI_CMD_STOP;
cmd.demod = state->demod;
ddb_mci_cmd(state, &cmd, NULL);
if (state->base->iq_mode) {
cmd.command = MCI_CMD_STOP;
cmd.demod = state->demod;
cmd.output = 0;
ddb_mci_cmd(state, &cmd, NULL);
ddb_mci_config(state, SX8_TSCONFIG_MODE_NORMAL);
}
}
mutex_lock(&state->base->tuner_lock);
state->base->tuner_use_count[input]--;
if (!state->base->tuner_use_count[input])
mci_set_tuner(fe, input, 0);
if (state->demod < MCI_DEMOD_MAX)
state->base->demod_in_use[state->demod] = 0;
state->base->used_ldpc_bitrate[state->nr] = 0;
state->demod = DEMOD_UNUSED;
state->base->assigned_demod[state->nr] = DEMOD_UNUSED;
state->base->iq_mode = 0;
mutex_unlock(&state->base->tuner_lock);
state->started = 0;
return 0;
}
static int start(struct dvb_frontend *fe, u32 flags, u32 modmask, u32 ts_config)
{
struct mci *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 used_ldpc_bitrate = 0, free_ldpc_bitrate;
u32 used_demods = 0;
struct mci_command cmd;
u32 input = state->tuner;
u32 bits_per_symbol = 0;
int i, stat = 0;
if (p->symbol_rate >= (MCLK / 2))
flags &= ~1;
if ((flags & 3) == 0)
return -EINVAL;
if (flags & 2) {
u32 tmp = modmask;
bits_per_symbol = 1;
while (tmp & 1) {
tmp >>= 1;
bits_per_symbol++;
}
}
mutex_lock(&state->base->tuner_lock);
if (state->base->iq_mode) {
stat = -EBUSY;
goto unlock;
}
for (i = 0; i < MCI_DEMOD_MAX; i++) {
used_ldpc_bitrate += state->base->used_ldpc_bitrate[i];
if (state->base->demod_in_use[i])
used_demods++;
}
if (used_ldpc_bitrate >= MAX_LDPC_BITRATE ||
((ts_config & SX8_TSCONFIG_MODE_MASK) >
SX8_TSCONFIG_MODE_NORMAL && used_demods > 0)) {
stat = -EBUSY;
goto unlock;
}
free_ldpc_bitrate = MAX_LDPC_BITRATE - used_ldpc_bitrate;
if (free_ldpc_bitrate > MAX_DEMOD_LDPC_BITRATE)
free_ldpc_bitrate = MAX_DEMOD_LDPC_BITRATE;
while (p->symbol_rate * bits_per_symbol > free_ldpc_bitrate)
bits_per_symbol--;
if (bits_per_symbol < 2) {
stat = -EBUSY;
goto unlock;
}
i = (p->symbol_rate > (MCLK / 2)) ? 3 : 7;
while (i >= 0 && state->base->demod_in_use[i])
i--;
if (i < 0) {
stat = -EBUSY;
goto unlock;
}
state->base->demod_in_use[i] = 1;
state->base->used_ldpc_bitrate[state->nr] = p->symbol_rate
* bits_per_symbol;
state->demod = i;
state->base->assigned_demod[state->nr] = i;
if (!state->base->tuner_use_count[input])
mci_set_tuner(fe, input, 1);
state->base->tuner_use_count[input]++;
state->base->iq_mode = (ts_config > 1);
unlock:
mutex_unlock(&state->base->tuner_lock);
if (stat)
return stat;
memset(&cmd, 0, sizeof(cmd));
if (state->base->iq_mode) {
cmd.command = SX8_CMD_ENABLE_IQOUTPUT;
cmd.demod = state->demod;
cmd.output = 0;
ddb_mci_cmd(state, &cmd, NULL);
ddb_mci_config(state, ts_config);
}
if (p->stream_id != NO_STREAM_ID_FILTER && p->stream_id != 0x80000000)
flags |= 0x80;
dev_dbg(state->base->dev, "MCI-%d: tuner=%d demod=%d\n",
state->nr, state->tuner, state->demod);
cmd.command = MCI_CMD_SEARCH_DVBS;
cmd.dvbs2_search.flags = flags;
cmd.dvbs2_search.s2_modulation_mask =
modmask & ((1 << (bits_per_symbol - 1)) - 1);
cmd.dvbs2_search.retry = 2;
cmd.dvbs2_search.frequency = p->frequency * 1000;
cmd.dvbs2_search.symbol_rate = p->symbol_rate;
cmd.dvbs2_search.scrambling_sequence_index =
p->scrambling_sequence_index;
cmd.dvbs2_search.input_stream_id =
(p->stream_id != NO_STREAM_ID_FILTER) ? p->stream_id : 0;
cmd.tuner = state->tuner;
cmd.demod = state->demod;
cmd.output = state->nr;
if (p->stream_id == 0x80000000)
cmd.output |= 0x80;
stat = ddb_mci_cmd(state, &cmd, NULL);
if (stat)
stop(fe);
return stat;
}
static int start_iq(struct dvb_frontend *fe, u32 ts_config)
{
struct mci *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 used_demods = 0;
struct mci_command cmd;
u32 input = state->tuner;
int i, stat = 0;
mutex_lock(&state->base->tuner_lock);
if (state->base->iq_mode) {
stat = -EBUSY;
goto unlock;
}
for (i = 0; i < MCI_DEMOD_MAX; i++)
if (state->base->demod_in_use[i])
used_demods++;
if (used_demods > 0) {
stat = -EBUSY;
goto unlock;
}
state->demod = 0;
state->base->assigned_demod[state->nr] = 0;
if (!state->base->tuner_use_count[input])
mci_set_tuner(fe, input, 1);
state->base->tuner_use_count[input]++;
state->base->iq_mode = (ts_config > 1);
unlock:
mutex_unlock(&state->base->tuner_lock);
if (stat)
return stat;
memset(&cmd, 0, sizeof(cmd));
cmd.command = SX8_CMD_START_IQ;
cmd.dvbs2_search.frequency = p->frequency * 1000;
cmd.dvbs2_search.symbol_rate = p->symbol_rate;
cmd.tuner = state->tuner;
cmd.demod = state->demod;
cmd.output = 7;
ddb_mci_config(state, ts_config);
stat = ddb_mci_cmd(state, &cmd, NULL);
if (stat)
stop(fe);
return stat;
}
static int set_parameters(struct dvb_frontend *fe)
{
int stat = 0;
struct mci *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 ts_config, iq_mode = 0, isi;
if (state->started)
stop(fe);
isi = p->stream_id;
if (isi != NO_STREAM_ID_FILTER)
iq_mode = (isi & 0x30000000) >> 28;
switch (iq_mode) {
case 1:
ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
break;
case 2:
ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
break;
default:
ts_config = SX8_TSCONFIG_MODE_NORMAL;
break;
}
if (iq_mode != 2) {
u32 flags = 3;
u32 mask = 3;
if (p->modulation == APSK_16 ||
p->modulation == APSK_32) {
flags = 2;
mask = 15;
}
stat = start(fe, flags, mask, ts_config);
} else {
stat = start_iq(fe, ts_config);
}
if (!stat) {
state->started = 1;
state->first_time_lock = 1;
state->signal_info.status = SX8_DEMOD_WAIT_SIGNAL;
}
return stat;
}
static int tune(struct dvb_frontend *fe, bool re_tune,
unsigned int mode_flags,
unsigned int *delay, enum fe_status *status)
{
int r;
if (re_tune) {
r = set_parameters(fe);
if (r)
return r;
}
r = read_status(fe, status);
if (r)
return r;
if (*status & FE_HAS_LOCK)
return 0;
*delay = HZ / 10;
return 0;
}
static enum dvbfe_algo get_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_HW;
}
static int set_input(struct dvb_frontend *fe, int input)
{
struct mci *state = fe->demodulator_priv;
state->tuner = input;
dev_dbg(state->base->dev, "MCI-%d: input=%d\n", state->nr, input);
return 0;
}
static struct dvb_frontend_ops mci_ops = {
.delsys = { SYS_DVBS, SYS_DVBS2 },
.info = {
.name = "Digital Devices MaxSX8 MCI DVB-S/S2/S2X",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_stepsize = 0,
.frequency_tolerance = 0,
.symbol_rate_min = 100000,
.symbol_rate_max = 100000000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_2G_MODULATION |
FE_CAN_MULTISTREAM,
},
.get_frontend_algo = get_algo,
.tune = tune,
.release = release,
.read_status = read_status,
};
static struct mci_base *match_base(void *key)
{
struct mci_base *p;
@ -511,8 +124,7 @@ static int probe(struct mci *state)
}
struct dvb_frontend
*ddb_mci_attach(struct ddb_input *input,
int mci_type, int nr,
*ddb_mci_attach(struct ddb_input *input, struct mci_cfg *cfg, int nr,
int (**fn_set_input)(struct dvb_frontend *fe, int input))
{
struct ddb_port *port = input->port;
@ -520,9 +132,9 @@ struct dvb_frontend
struct ddb_link *link = &dev->link[port->lnr];
struct mci_base *base;
struct mci *state;
void *key = mci_type ? (void *)port : (void *)link;
void *key = cfg->type ? (void *)port : (void *)link;
state = kzalloc(sizeof(*state), GFP_KERNEL);
state = kzalloc(cfg->state_size, GFP_KERNEL);
if (!state)
return NULL;
@ -531,7 +143,7 @@ struct dvb_frontend
base->count++;
state->base = base;
} else {
base = kzalloc(sizeof(*base), GFP_KERNEL);
base = kzalloc(cfg->base_size, GFP_KERNEL);
if (!base)
goto fail;
base->key = key;
@ -548,15 +160,17 @@ struct dvb_frontend
goto fail;
}
list_add(&base->mci_list, &mci_list);
if (cfg->base_init)
cfg->base_init(base);
}
state->fe.ops = mci_ops;
memcpy(&state->fe.ops, cfg->fe_ops, sizeof(struct dvb_frontend_ops));
state->fe.demodulator_priv = state;
state->nr = nr;
*fn_set_input = set_input;
*fn_set_input = cfg->set_input;
state->tuner = nr;
state->demod = nr;
if (cfg->init)
cfg->init(state);
return &state->fe;
fail:
kfree(state);

30
drivers/media/pci/ddbridge/ddbridge-mci.h
View File

@ -211,18 +211,11 @@ struct mci_base {
void *key;
struct ddb_link *link;
struct completion completion;
struct device *dev;
struct mutex tuner_lock; /* concurrent tuner access lock */
u8 adr;
struct mutex mci_lock; /* concurrent MCI access lock */
int count;
u8 tuner_use_count[MCI_TUNER_MAX];
u8 assigned_demod[MCI_DEMOD_MAX];
u32 used_ldpc_bitrate[MCI_DEMOD_MAX];
u8 demod_in_use[MCI_DEMOD_MAX];
u32 iq_mode;
int type;
};
struct mci {
@ -231,20 +224,27 @@ struct mci {
int nr;
int demod;
int tuner;
int first_time_lock;
int started;
struct mci_result signal_info;
u32 bb_mode;
};
struct mci_cfg {
int type;
struct dvb_frontend_ops *fe_ops;
u32 base_size;
u32 state_size;
int (*init)(struct mci *mci);
int (*base_init)(struct mci_base *mci_base);
int (*set_input)(struct dvb_frontend *fe, int input);
};
/* defined in ddbridge-sx8.c */
extern const struct mci_cfg ddb_max_sx8_cfg;
int ddb_mci_cmd(struct mci *state, struct mci_command *command,
struct mci_result *result);
int ddb_mci_config(struct mci *state, u32 config);
struct dvb_frontend
*ddb_mci_attach(struct ddb_input *input,
int mci_type, int nr,
*ddb_mci_attach(struct ddb_input *input, struct mci_cfg *cfg, int nr,
int (**fn_set_input)(struct dvb_frontend *fe, int input));
#endif /* _DDBRIDGE_MCI_H_ */

474
drivers/media/pci/ddbridge/ddbridge-sx8.c Normal file
View File

@ -0,0 +1,474 @@
// SPDX-License-Identifier: GPL-2.0
/*
* ddbridge-sx8.c: Digital Devices MAX SX8 driver
*
* Copyright (C) 2018 Digital Devices GmbH
* Marcus Metzler <mocm@metzlerbros.de>
* Ralph Metzler <rjkm@metzlerbros.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
* 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.
*/
#include "ddbridge.h"
#include "ddbridge-io.h"
#include "ddbridge-mci.h"
static const u32 MCLK = (1550000000 / 12);
static const u32 MAX_LDPC_BITRATE = (720000000);
static const u32 MAX_DEMOD_LDPC_BITRATE = (1550000000 / 6);
#define SX8_TUNER_NUM 4
#define SX8_DEMOD_NUM 8
#define SX8_DEMOD_NONE 0xff
struct sx8_base {
struct mci_base mci_base;
u8 tuner_use_count[SX8_TUNER_NUM];
u32 gain_mode[SX8_TUNER_NUM];
u32 used_ldpc_bitrate[SX8_DEMOD_NUM];
u8 demod_in_use[SX8_DEMOD_NUM];
u32 iq_mode;
u32 burst_size;
u32 direct_mode;
};
struct sx8 {
struct mci mci;
int first_time_lock;
int started;
struct mci_result signal_info;
u32 bb_mode;
u32 local_frequency;
};
static void release(struct dvb_frontend *fe)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
mci_base->count--;
if (mci_base->count == 0) {
list_del(&mci_base->mci_list);
kfree(mci_base);
}
kfree(state);
}
static int get_info(struct dvb_frontend *fe)
{
int stat;
struct sx8 *state = fe->demodulator_priv;
struct mci_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.command = MCI_CMD_GETSIGNALINFO;
cmd.demod = state->mci.demod;
stat = ddb_mci_cmd(&state->mci, &cmd, &state->signal_info);
return stat;
}
static int get_snr(struct dvb_frontend *fe)
{
struct sx8 *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
p->cnr.len = 1;
p->cnr.stat[0].scale = FE_SCALE_DECIBEL;
p->cnr.stat[0].svalue =
(s64)state->signal_info.dvbs2_signal_info.signal_to_noise
* 10;
return 0;
}
static int get_strength(struct dvb_frontend *fe)
{
struct sx8 *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
s32 str;
str = 100000 -
(state->signal_info.dvbs2_signal_info.channel_power
* 10 + 108750);
p->strength.len = 1;
p->strength.stat[0].scale = FE_SCALE_DECIBEL;
p->strength.stat[0].svalue = str;
return 0;
}
static int read_status(struct dvb_frontend *fe, enum fe_status *status)
{
int stat;
struct sx8 *state = fe->demodulator_priv;
struct mci_command cmd;
struct mci_result res;
cmd.command = MCI_CMD_GETSTATUS;
cmd.demod = state->mci.demod;
stat = ddb_mci_cmd(&state->mci, &cmd, &res);
if (stat)
return stat;
*status = 0x00;
get_info(fe);
get_strength(fe);
if (res.status == SX8_DEMOD_WAIT_MATYPE)
*status = 0x0f;
if (res.status == SX8_DEMOD_LOCKED) {
*status = 0x1f;
get_snr(fe);
}
return stat;
}
static int mci_set_tuner(struct dvb_frontend *fe, u32 tuner, u32 on)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *)mci_base;
struct mci_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.tuner = state->mci.tuner;
cmd.command = on ? SX8_CMD_INPUT_ENABLE : SX8_CMD_INPUT_DISABLE;
cmd.sx8_input_enable.flags = sx8_base->gain_mode[state->mci.tuner];
return ddb_mci_cmd(&state->mci, &cmd, NULL);
}
static int stop(struct dvb_frontend *fe)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *)mci_base;
struct mci_command cmd;
u32 input = state->mci.tuner;
memset(&cmd, 0, sizeof(cmd));
if (state->mci.demod != SX8_DEMOD_NONE) {
cmd.command = MCI_CMD_STOP;
cmd.demod = state->mci.demod;
ddb_mci_cmd(&state->mci, &cmd, NULL);
if (sx8_base->iq_mode) {
cmd.command = SX8_CMD_DISABLE_IQOUTPUT;
cmd.demod = state->mci.demod;
cmd.output = 0;
ddb_mci_cmd(&state->mci, &cmd, NULL);
ddb_mci_config(&state->mci, SX8_TSCONFIG_MODE_NORMAL);
}
}
mutex_lock(&mci_base->tuner_lock);
sx8_base->tuner_use_count[input]--;
if (!sx8_base->tuner_use_count[input])
mci_set_tuner(fe, input, 0);
if (state->mci.demod < SX8_DEMOD_NUM) {
sx8_base->demod_in_use[state->mci.demod] = 0;
state->mci.demod = SX8_DEMOD_NONE;
}
sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
sx8_base->iq_mode = 0;
mutex_unlock(&mci_base->tuner_lock);
state->started = 0;
return 0;
}
static int start(struct dvb_frontend *fe, u32 flags, u32 modmask, u32 ts_config)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *)mci_base;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 used_ldpc_bitrate = 0, free_ldpc_bitrate;
u32 used_demods = 0;
struct mci_command cmd;
u32 input = state->mci.tuner;
u32 bits_per_symbol = 0;
int i = -1, stat = 0;
if (p->symbol_rate >= (MCLK / 2))
flags &= ~1;
if ((flags & 3) == 0)
return -EINVAL;
if (flags & 2) {
u32 tmp = modmask;
bits_per_symbol = 1;
while (tmp & 1) {
tmp >>= 1;
bits_per_symbol++;
}
}
mutex_lock(&mci_base->tuner_lock);
if (sx8_base->iq_mode) {
stat = -EBUSY;
goto unlock;
}
if (sx8_base->direct_mode) {
if (p->symbol_rate >= MCLK / 2) {
if (state->mci.nr < 4)
i = state->mci.nr;
} else {
i = state->mci.nr;
}
} else {
for (i = 0; i < SX8_DEMOD_NUM; i++) {
used_ldpc_bitrate += sx8_base->used_ldpc_bitrate[i];
if (sx8_base->demod_in_use[i])
used_demods++;
}
if (used_ldpc_bitrate >= MAX_LDPC_BITRATE ||
((ts_config & SX8_TSCONFIG_MODE_MASK) >
SX8_TSCONFIG_MODE_NORMAL && used_demods > 0)) {
stat = -EBUSY;
goto unlock;
}
free_ldpc_bitrate = MAX_LDPC_BITRATE - used_ldpc_bitrate;
if (free_ldpc_bitrate > MAX_DEMOD_LDPC_BITRATE)
free_ldpc_bitrate = MAX_DEMOD_LDPC_BITRATE;
while (p->symbol_rate * bits_per_symbol > free_ldpc_bitrate)
bits_per_symbol--;
if (bits_per_symbol < 2) {
stat = -EBUSY;
goto unlock;
}
modmask &= ((1 << (bits_per_symbol - 1)) - 1);
if (((flags & 0x02) != 0) && modmask == 0) {
stat = -EBUSY;
goto unlock;
}
i = (p->symbol_rate > (MCLK / 2)) ? 3 : 7;
while (i >= 0 && sx8_base->demod_in_use[i])
i--;
}
if (i < 0) {
stat = -EBUSY;
goto unlock;
}
sx8_base->demod_in_use[i] = 1;
sx8_base->used_ldpc_bitrate[state->mci.nr] = p->symbol_rate
* bits_per_symbol;
state->mci.demod = i;
if (!sx8_base->tuner_use_count[input])
mci_set_tuner(fe, input, 1);
sx8_base->tuner_use_count[input]++;
sx8_base->iq_mode = (ts_config > 1);
unlock:
mutex_unlock(&mci_base->tuner_lock);
if (stat)
return stat;
memset(&cmd, 0, sizeof(cmd));
if (sx8_base->iq_mode) {
cmd.command = SX8_CMD_ENABLE_IQOUTPUT;
cmd.demod = state->mci.demod;
cmd.output = 0;
ddb_mci_cmd(&state->mci, &cmd, NULL);
ddb_mci_config(&state->mci, ts_config);
}
if (p->stream_id != NO_STREAM_ID_FILTER && p->stream_id != 0x80000000)
flags |= 0x80;
dev_dbg(mci_base->dev, "MCI-%d: tuner=%d demod=%d\n",
state->mci.nr, state->mci.tuner, state->mci.demod);
cmd.command = MCI_CMD_SEARCH_DVBS;
cmd.dvbs2_search.flags = flags;
cmd.dvbs2_search.s2_modulation_mask = modmask;
cmd.dvbs2_search.retry = 2;
cmd.dvbs2_search.frequency = p->frequency * 1000;
cmd.dvbs2_search.symbol_rate = p->symbol_rate;
cmd.dvbs2_search.scrambling_sequence_index =
p->scrambling_sequence_index;
cmd.dvbs2_search.input_stream_id =
(p->stream_id != NO_STREAM_ID_FILTER) ? p->stream_id : 0;
cmd.tuner = state->mci.tuner;
cmd.demod = state->mci.demod;
cmd.output = state->mci.nr;
if (p->stream_id == 0x80000000)
cmd.output |= 0x80;
stat = ddb_mci_cmd(&state->mci, &cmd, NULL);
if (stat)
stop(fe);
return stat;
}
static int start_iq(struct dvb_frontend *fe, u32 flags, u32 roll_off,
u32 ts_config)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
struct sx8_base *sx8_base = (struct sx8_base *)mci_base;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 used_demods = 0;
struct mci_command cmd;
u32 input = state->mci.tuner;
int i, stat = 0;
mutex_lock(&mci_base->tuner_lock);
if (sx8_base->iq_mode) {
stat = -EBUSY;
goto unlock;
}
for (i = 0; i < SX8_DEMOD_NUM; i++)
if (sx8_base->demod_in_use[i])
used_demods++;
if (used_demods > 0) {
stat = -EBUSY;
goto unlock;
}
state->mci.demod = 0;
if (!sx8_base->tuner_use_count[input])
mci_set_tuner(fe, input, 1);
sx8_base->tuner_use_count[input]++;
sx8_base->iq_mode = (ts_config > 1);
unlock:
mutex_unlock(&mci_base->tuner_lock);
if (stat)
return stat;
memset(&cmd, 0, sizeof(cmd));
cmd.command = SX8_CMD_START_IQ;
cmd.sx8_start_iq.flags = flags;
cmd.sx8_start_iq.roll_off = roll_off;
cmd.sx8_start_iq.frequency = p->frequency * 1000;
cmd.sx8_start_iq.symbol_rate = p->symbol_rate;
cmd.tuner = state->mci.tuner;
cmd.demod = state->mci.demod;
stat = ddb_mci_cmd(&state->mci, &cmd, NULL);
if (stat)
stop(fe);
ddb_mci_config(&state->mci, ts_config);
return stat;
}
static int set_parameters(struct dvb_frontend *fe)
{
int stat = 0;
struct sx8 *state = fe->demodulator_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 ts_config = SX8_TSCONFIG_MODE_NORMAL, iq_mode = 0, isi;
if (state->started)
stop(fe);
isi = p->stream_id;
if (isi != NO_STREAM_ID_FILTER)
iq_mode = (isi & 0x30000000) >> 28;
if (iq_mode)
ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
if (iq_mode < 3) {
u32 flags = 3;
u32 mask = 0x7f;
if (p->modulation == APSK_16 ||
p->modulation == APSK_32) {
flags = 2;
mask = 0x0f;
}
stat = start(fe, flags, mask, ts_config);
} else {
u32 flags = (iq_mode == 2) ? 1 : 0;
stat = start_iq(fe, flags, 4, ts_config);
}
if (!stat) {
state->started = 1;
state->first_time_lock = 1;
state->signal_info.status = SX8_DEMOD_WAIT_SIGNAL;
}
return stat;
}
static int tune(struct dvb_frontend *fe, bool re_tune,
unsigned int mode_flags,
unsigned int *delay, enum fe_status *status)
{
int r;
if (re_tune) {
r = set_parameters(fe);
if (r)
return r;
}
r = read_status(fe, status);
if (r)
return r;
if (*status & FE_HAS_LOCK)
return 0;
*delay = HZ / 10;
return 0;
}
static enum dvbfe_algo get_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_HW;
}
static int set_input(struct dvb_frontend *fe, int input)
{
struct sx8 *state = fe->demodulator_priv;
struct mci_base *mci_base = state->mci.base;
if (input >= SX8_TUNER_NUM)
return -EINVAL;
state->mci.tuner = input;
dev_dbg(mci_base->dev, "MCI-%d: input=%d\n", state->mci.nr, input);
return 0;
}
static struct dvb_frontend_ops sx8_ops = {
.delsys = { SYS_DVBS, SYS_DVBS2 },
.info = {
.name = "Digital Devices MaxSX8 MCI DVB-S/S2/S2X",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_stepsize = 0,
.frequency_tolerance = 0,
.symbol_rate_min = 100000,
.symbol_rate_max = 100000000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_2G_MODULATION |
FE_CAN_MULTISTREAM,
},
.get_frontend_algo = get_algo,
.tune = tune,
.release = release,
.read_status = read_status,
};
static int init(struct mci *mci)
{
struct sx8 *state = (struct sx8 *)mci;
state->mci.demod = SX8_DEMOD_NONE;
return 0;
}
const struct mci_cfg ddb_max_sx8_cfg = {
.type = 0,
.fe_ops = &sx8_ops,
.base_size = sizeof(struct sx8_base),
.state_size = sizeof(struct sx8),
.init = init,
.set_input = set_input,
};