return fe->ops.get_frontend;
}
+/*
+ * Due to DVBv3 API calls, a delivery system should be mapped into one of
+ * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
+ * otherwise, a DVBv3 call will fail.
+ */
+enum dvbv3_emulation_type {
+ DVBV3_UNKNOWN,
+ DVBV3_QPSK,
+ DVBV3_QAM,
+ DVBV3_OFDM,
+ DVBV3_ATSC,
+};
+
+static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
+{
+ switch (delivery_system) {
+ case SYS_DVBC_ANNEX_A:
+ case SYS_DVBC_ANNEX_C:
+ return DVBV3_QAM;
+ case SYS_DVBS:
+ case SYS_DVBS2:
+ case SYS_TURBO:
+ case SYS_ISDBS:
+ case SYS_DSS:
+ return DVBV3_QPSK;
+ case SYS_DVBT:
+ case SYS_DVBT2:
+ case SYS_ISDBT:
+ case SYS_DMBTH:
+ return DVBV3_OFDM;
+ case SYS_ATSC:
+ case SYS_DVBC_ANNEX_B:
+ return DVBV3_ATSC;
+ case SYS_UNDEFINED:
+ case SYS_ISDBC:
+ case SYS_DVBH:
+ case SYS_DAB:
+ case SYS_ATSCMH:
+ default:
+ /*
+ * Doesn't know how to emulate those types and/or
+ * there's no frontend driver from this type yet
+ * with some emulation code, so, we're not sure yet how
+ * to handle them, or they're not compatible with a DVBv3 call.
+ */
+ return DVBV3_UNKNOWN;
+ }
+}
+
static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
{
struct dvb_frontend_private *fepriv = fe->frontend_priv;
fe->dvb->num,fe->id);
}
-static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *parms)
+static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
{
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 freq_min;
u32 freq_max;
/* range check: frequency */
dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
- if ((freq_min && parms->frequency < freq_min) ||
- (freq_max && parms->frequency > freq_max)) {
+ if ((freq_min && c->frequency < freq_min) ||
+ (freq_max && c->frequency > freq_max)) {
printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
- fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
+ fe->dvb->num, fe->id, c->frequency, freq_min, freq_max);
return -EINVAL;
}
/* range check: symbol rate */
- if (fe->ops.info.type == FE_QPSK) {
- if ((fe->ops.info.symbol_rate_min &&
- parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
- (fe->ops.info.symbol_rate_max &&
- parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
- printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
- fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
- fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
- return -EINVAL;
- }
-
- } else if (fe->ops.info.type == FE_QAM) {
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ case SYS_DVBS2:
+ case SYS_TURBO:
+ case SYS_DVBC_ANNEX_A:
+ case SYS_DVBC_ANNEX_C:
if ((fe->ops.info.symbol_rate_min &&
- parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
+ c->symbol_rate < fe->ops.info.symbol_rate_min) ||
(fe->ops.info.symbol_rate_max &&
- parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
+ c->symbol_rate > fe->ops.info.symbol_rate_max)) {
printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
- fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
- fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
+ fe->dvb->num, fe->id, c->symbol_rate,
+ fe->ops.info.symbol_rate_min,
+ fe->ops.info.symbol_rate_max);
return -EINVAL;
}
+ default:
+ break;
}
- /* check for supported modulation */
- if (fe->ops.info.type == FE_QAM &&
- (parms->u.qam.modulation > QAM_AUTO ||
- !((1 << (parms->u.qam.modulation + 10)) & fe->ops.info.caps))) {
- printk(KERN_WARNING "DVB: adapter %i frontend %i modulation %u not supported\n",
- fe->dvb->num, fe->id, parms->u.qam.modulation);
+ /*
+ * check for supported modulation
+ *
+ * This is currently hacky. Also, it only works for DVB-S & friends,
+ * and not all modulations has FE_CAN flags
+ */
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ case SYS_DVBS2:
+ case SYS_TURBO:
+ if ((c->modulation > QAM_AUTO ||
+ !((1 << (c->modulation + 10)) & fe->ops.info.caps))) {
+ printk(KERN_WARNING
+ "DVB: adapter %i frontend %i modulation %u not supported\n",
+ fe->dvb->num, fe->id, c->modulation);
return -EINVAL;
+ }
+ break;
+ default:
+ /* FIXME: it makes sense to validate othere delsys here */
+ break;
}
return 0;
c->state = DTV_CLEAR;
c->delivery_system = fe->ops.delsys[0];
+ dprintk("%s() Clearing cache for delivery system %d\n", __func__,
+ c->delivery_system);
c->transmission_mode = TRANSMISSION_MODE_AUTO;
c->bandwidth_hz = 0; /* AUTO */
c->fec_inner = FEC_AUTO;
c->rolloff = ROLLOFF_AUTO;
c->voltage = SEC_VOLTAGE_OFF;
- c->modulation = QAM_AUTO;
c->sectone = SEC_TONE_OFF;
c->pilot = PILOT_AUTO;
c->isdbs_ts_id = 0;
c->dvbt2_plp_id = 0;
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ case SYS_DVBS2:
+ case SYS_TURBO:
+ c->modulation = QPSK; /* implied for DVB-S in legacy API */
+ c->rolloff = ROLLOFF_35;/* implied for DVB-S */
+ break;
+ case SYS_ATSC:
+ c->modulation = VSB_8;
+ break;
+ default:
+ c->modulation = QAM_AUTO;
+ break;
+ }
+
return 0;
}
dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
}
-static int is_legacy_delivery_system(fe_delivery_system_t s)
-{
- if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_A) ||
- (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
- (s == SYS_ATSC))
- return 1;
-
- return 0;
-}
-
-/* Initialize the cache with some default values derived from the
- * legacy frontend_info structure.
- */
-static void dtv_property_cache_init(struct dvb_frontend *fe,
- struct dtv_frontend_properties *c)
-{
- switch (fe->ops.info.type) {
- case FE_QPSK:
- c->modulation = QPSK; /* implied for DVB-S in legacy API */
- c->rolloff = ROLLOFF_35;/* implied for DVB-S */
- c->delivery_system = SYS_DVBS;
- break;
- case FE_QAM:
- c->delivery_system = SYS_DVBC_ANNEX_A;
- break;
- case FE_OFDM:
- c->delivery_system = SYS_DVBT;
- break;
- case FE_ATSC:
- break;
- }
-}
-
/* Synchronise the legacy tuning parameters into the cache, so that demodulator
* drivers can use a single set_frontend tuning function, regardless of whether
* it's being used for the legacy or new API, reducing code and complexity.
*/
-static void dtv_property_cache_sync(struct dvb_frontend *fe,
- struct dtv_frontend_properties *c,
- const struct dvb_frontend_parameters *p)
+static int dtv_property_cache_sync(struct dvb_frontend *fe,
+ struct dtv_frontend_properties *c,
+ const struct dvb_frontend_parameters *p)
{
c->frequency = p->frequency;
c->inversion = p->inversion;
- switch (fe->ops.info.type) {
- case FE_QPSK:
+ switch (dvbv3_type(c->delivery_system)) {
+ case DVBV3_QPSK:
+ dprintk("%s() Preparing QPSK req\n", __func__);
c->symbol_rate = p->u.qpsk.symbol_rate;
c->fec_inner = p->u.qpsk.fec_inner;
break;
- case FE_QAM:
+ case DVBV3_QAM:
+ dprintk("%s() Preparing QAM req\n", __func__);
c->symbol_rate = p->u.qam.symbol_rate;
c->fec_inner = p->u.qam.fec_inner;
c->modulation = p->u.qam.modulation;
break;
- case FE_OFDM:
+ case DVBV3_OFDM:
+ dprintk("%s() Preparing OFDM req\n", __func__);
switch (p->u.ofdm.bandwidth) {
case BANDWIDTH_10_MHZ:
c->bandwidth_hz = 10000000;
c->guard_interval = p->u.ofdm.guard_interval;
c->hierarchy = p->u.ofdm.hierarchy_information;
break;
- case FE_ATSC:
+ case DVBV3_ATSC:
+ dprintk("%s() Preparing ATSC req\n", __func__);
c->modulation = p->u.vsb.modulation;
if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
c->delivery_system = SYS_ATSC;
else
c->delivery_system = SYS_DVBC_ANNEX_B;
break;
+ case DVBV3_UNKNOWN:
+ printk(KERN_ERR
+ "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
+ __func__, c->delivery_system);
+ return -EINVAL;
}
+
+ return 0;
}
/* Ensure the cached values are set correctly in the frontend
* legacy tuning structures, for the advanced tuning API.
*/
-static void dtv_property_legacy_params_sync(struct dvb_frontend *fe,
+static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
{
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
p->frequency = c->frequency;
p->inversion = c->inversion;
- switch (fe->ops.info.type) {
- case FE_QPSK:
+ switch (dvbv3_type(c->delivery_system)) {
+ case DVBV3_UNKNOWN:
+ printk(KERN_ERR
+ "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
+ __func__, c->delivery_system);
+ return -EINVAL;
+ case DVBV3_QPSK:
dprintk("%s() Preparing QPSK req\n", __func__);
p->u.qpsk.symbol_rate = c->symbol_rate;
p->u.qpsk.fec_inner = c->fec_inner;
break;
- case FE_QAM:
+ case DVBV3_QAM:
dprintk("%s() Preparing QAM req\n", __func__);
p->u.qam.symbol_rate = c->symbol_rate;
p->u.qam.fec_inner = c->fec_inner;
p->u.qam.modulation = c->modulation;
break;
- case FE_OFDM:
+ case DVBV3_OFDM:
dprintk("%s() Preparing OFDM req\n", __func__);
+
switch (c->bandwidth_hz) {
case 10000000:
p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
p->u.ofdm.guard_interval = c->guard_interval;
p->u.ofdm.hierarchy_information = c->hierarchy;
break;
- case FE_ATSC:
+ case DVBV3_ATSC:
dprintk("%s() Preparing VSB req\n", __func__);
p->u.vsb.modulation = c->modulation;
break;
}
-}
-
-/* Ensure the cached values are set correctly in the frontend
- * legacy tuning structures, for the legacy tuning API.
- */
-static void dtv_property_adv_params_sync(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dvb_frontend_parameters *p = &fepriv->parameters_in;
- u32 rolloff = 0;
-
- p->frequency = c->frequency;
- p->inversion = c->inversion;
-
- if (c->delivery_system == SYS_DSS ||
- c->delivery_system == SYS_DVBS ||
- c->delivery_system == SYS_DVBS2 ||
- c->delivery_system == SYS_ISDBS ||
- c->delivery_system == SYS_TURBO) {
- p->u.qpsk.symbol_rate = c->symbol_rate;
- p->u.qpsk.fec_inner = c->fec_inner;
- }
-
- /* Fake out a generic DVB-T request so we pass validation in the ioctl */
- if ((c->delivery_system == SYS_ISDBT) ||
- (c->delivery_system == SYS_DVBT2)) {
- p->u.ofdm.constellation = QAM_AUTO;
- p->u.ofdm.code_rate_HP = FEC_AUTO;
- p->u.ofdm.code_rate_LP = FEC_AUTO;
- p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
- p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
- p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
- if (c->bandwidth_hz == 8000000)
- p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
- else if (c->bandwidth_hz == 7000000)
- p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
- else if (c->bandwidth_hz == 6000000)
- p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
- else
- p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
- }
-
- /*
- * Be sure that the bandwidth will be filled for all
- * non-satellite systems, as tuners need to know what
- * low pass/Nyquist half filter should be applied, in
- * order to avoid inter-channel noise.
- *
- * ISDB-T and DVB-T/T2 already sets bandwidth.
- * ATSC and DVB-C don't set, so, the core should fill it.
- *
- * On DVB-C Annex A and C, the bandwidth is a function of
- * the roll-off and symbol rate. Annex B defines different
- * roll-off factors depending on the modulation. Fortunately,
- * Annex B is only used with 6MHz, so there's no need to
- * calculate it.
- *
- * While not officially supported, a side effect of handling it at
- * the cache level is that a program could retrieve the bandwidth
- * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
- */
- switch (c->delivery_system) {
- case SYS_ATSC:
- case SYS_DVBC_ANNEX_B:
- c->bandwidth_hz = 6000000;
- break;
- case SYS_DVBC_ANNEX_A:
- rolloff = 115;
- break;
- case SYS_DVBC_ANNEX_C:
- rolloff = 113;
- break;
- default:
- break;
- }
- if (rolloff)
- c->bandwidth_hz = (c->symbol_rate * rolloff) / 100;
-}
-
-static void dtv_property_cache_submit(struct dvb_frontend *fe)
-{
- const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
- /* For legacy delivery systems we don't need the delivery_system to
- * be specified, but we populate the older structures from the cache
- * so we can call set_frontend on older drivers.
- */
- if(is_legacy_delivery_system(c->delivery_system)) {
-
- dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
- dtv_property_legacy_params_sync(fe, &fepriv->parameters_in);
-
- } else {
- dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
-
- /* For advanced delivery systems / modulation types ...
- * we seed the lecacy dvb_frontend_parameters structure
- * so that the sanity checking code later in the IOCTL processing
- * can validate our basic frequency ranges, symbolrates, modulation
- * etc.
- */
- dtv_property_adv_params_sync(fe);
- }
+ return 0;
}
/**
static int dvb_frontend_ioctl_properties(struct file *file,
unsigned int cmd, void *parg);
-static void dtv_set_default_delivery_caps(const struct dvb_frontend *fe, struct dtv_property *p)
-{
- const struct dvb_frontend_info *info = &fe->ops.info;
- u32 ncaps = 0;
-
- /*
- * If the frontend explicitly sets a list, use it, instead of
- * filling based on the info->type
- */
- if (fe->ops.delsys[ncaps]) {
- while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
- p->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
- ncaps++;
- }
- p->u.buffer.len = ncaps;
- return;
- }
- switch (info->type) {
- case FE_QPSK:
- p->u.buffer.data[ncaps++] = SYS_DVBS;
- if (info->caps & FE_CAN_2G_MODULATION)
- p->u.buffer.data[ncaps++] = SYS_DVBS2;
- if (info->caps & FE_CAN_TURBO_FEC)
- p->u.buffer.data[ncaps++] = SYS_TURBO;
- break;
- case FE_QAM:
- p->u.buffer.data[ncaps++] = SYS_DVBC_ANNEX_A;
- break;
- case FE_OFDM:
- p->u.buffer.data[ncaps++] = SYS_DVBT;
- if (info->caps & FE_CAN_2G_MODULATION)
- p->u.buffer.data[ncaps++] = SYS_DVBT2;
- break;
- case FE_ATSC:
- if (info->caps & (FE_CAN_8VSB | FE_CAN_16VSB))
- p->u.buffer.data[ncaps++] = SYS_ATSC;
- if (info->caps & (FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256))
- p->u.buffer.data[ncaps++] = SYS_DVBC_ANNEX_B;
- break;
- }
- p->u.buffer.len = ncaps;
-}
-
static int dtv_property_process_get(struct dvb_frontend *fe,
const struct dtv_frontend_properties *c,
struct dtv_property *tvp,
struct file *file)
{
- int r;
+ int r, ncaps;
switch(tvp->cmd) {
case DTV_ENUM_DELSYS:
- dtv_set_default_delivery_caps(fe, tvp);
+ ncaps = 0;
+ while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
+ tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
+ ncaps++;
+ }
+ tvp->u.buffer.len = ncaps;
break;
case DTV_FREQUENCY:
tvp->u.data = c->frequency;
return 0;
}
+static int dtv_set_frontend(struct dvb_frontend *fe);
+
static int dtv_property_process_set(struct dvb_frontend *fe,
struct dtv_property *tvp,
struct file *file)
switch(tvp->cmd) {
case DTV_CLEAR:
- /* Reset a cache of data specific to the frontend here. This does
+ /*
+ * Reset a cache of data specific to the frontend here. This does
* not effect hardware.
*/
dvb_frontend_clear_cache(fe);
- dprintk("%s() Flushing property cache\n", __func__);
break;
case DTV_TUNE:
/* interpret the cache of data, build either a traditional frontend
*/
c->state = tvp->cmd;
dprintk("%s() Finalised property cache\n", __func__);
- dtv_property_cache_submit(fe);
- r = dvb_frontend_ioctl_legacy(file, FE_SET_FRONTEND,
- &fepriv->parameters_in);
+ /* Needed, due to status update */
+ dtv_property_legacy_params_sync(fe, &fepriv->parameters_in);
+
+ r = dtv_set_frontend(fe);
break;
case DTV_FREQUENCY:
c->frequency = tvp->u.data;
return err;
}
-static int dtv_set_frontend(struct file *file, unsigned int cmd, void *parg)
+static int dtv_set_frontend(struct dvb_frontend *fe)
{
- struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct dvb_frontend_tune_settings fetunesettings;
+ u32 rolloff = 0;
- if (c->state == DTV_TUNE) {
- if (dvb_frontend_check_parameters(fe, &fepriv->parameters_in) < 0)
- return -EINVAL;
- } else {
- if (dvb_frontend_check_parameters(fe, parg) < 0)
- return -EINVAL;
-
- memcpy (&fepriv->parameters_in, parg,
- sizeof (struct dvb_frontend_parameters));
- dtv_property_cache_init(fe, c);
- dtv_property_cache_sync(fe, c, &fepriv->parameters_in);
- }
+ if (dvb_frontend_check_parameters(fe) < 0)
+ return -EINVAL;
/*
- * Initialize output parameters to match the values given by
- * the user. FE_SET_FRONTEND triggers an initial frontend event
- * with status = 0, which copies output parameters to userspace.
- */
+ * Initialize output parameters to match the values given by
+ * the user. FE_SET_FRONTEND triggers an initial frontend event
+ * with status = 0, which copies output parameters to userspace.
+ *
+ * This is still needed for DVBv5 calls, due to event state update.
+ */
fepriv->parameters_out = fepriv->parameters_in;
- memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
+ /*
+ * Be sure that the bandwidth will be filled for all
+ * non-satellite systems, as tuners need to know what
+ * low pass/Nyquist half filter should be applied, in
+ * order to avoid inter-channel noise.
+ *
+ * ISDB-T and DVB-T/T2 already sets bandwidth.
+ * ATSC and DVB-C don't set, so, the core should fill it.
+ *
+ * On DVB-C Annex A and C, the bandwidth is a function of
+ * the roll-off and symbol rate. Annex B defines different
+ * roll-off factors depending on the modulation. Fortunately,
+ * Annex B is only used with 6MHz, so there's no need to
+ * calculate it.
+ *
+ * While not officially supported, a side effect of handling it at
+ * the cache level is that a program could retrieve the bandwidth
+ * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
+ */
+ switch (c->delivery_system) {
+ case SYS_ATSC:
+ case SYS_DVBC_ANNEX_B:
+ c->bandwidth_hz = 6000000;
+ break;
+ case SYS_DVBC_ANNEX_A:
+ rolloff = 115;
+ break;
+ case SYS_DVBC_ANNEX_C:
+ rolloff = 113;
+ break;
+ default:
+ break;
+ }
+ if (rolloff)
+ c->bandwidth_hz = (c->symbol_rate * rolloff) / 100;
/* force auto frequency inversion if requested */
- if (dvb_force_auto_inversion) {
+ if (dvb_force_auto_inversion)
c->inversion = INVERSION_AUTO;
- }
- if (fe->ops.info.type == FE_OFDM) {
- /* without hierarchical coding code_rate_LP is irrelevant,
- * so we tolerate the otherwise invalid FEC_NONE setting */
- if (c->hierarchy == HIERARCHY_NONE &&
- c->code_rate_LP == FEC_NONE)
- c->code_rate_LP = FEC_AUTO;
- }
+
+ /*
+ * without hierarchical coding code_rate_LP is irrelevant,
+ * so we tolerate the otherwise invalid FEC_NONE setting
+ */
+ if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
+ c->code_rate_LP = FEC_AUTO;
/* get frontend-specific tuning settings */
+ memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
fepriv->max_drift = fetunesettings.max_drift;
fepriv->step_size = fetunesettings.step_size;
} else {
/* default values */
- switch(fe->ops.info.type) {
- case FE_QPSK:
- fepriv->min_delay = HZ/20;
+ switch (c->delivery_system) {
+ case SYS_DVBC_ANNEX_A:
+ case SYS_DVBC_ANNEX_C:
+ fepriv->min_delay = HZ / 20;
fepriv->step_size = c->symbol_rate / 16000;
fepriv->max_drift = c->symbol_rate / 2000;
break;
-
- case FE_QAM:
- fepriv->min_delay = HZ/20;
- fepriv->step_size = 0; /* no zigzag */
- fepriv->max_drift = 0;
- break;
-
- case FE_OFDM:
- fepriv->min_delay = HZ/20;
+ case SYS_DVBT:
+ case SYS_DVBT2:
+ case SYS_ISDBT:
+ case SYS_DMBTH:
+ fepriv->min_delay = HZ / 20;
fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
break;
- case FE_ATSC:
- fepriv->min_delay = HZ/20;
- fepriv->step_size = 0;
+ default:
+ /*
+ * FIXME: This sounds wrong! if freqency_stepsize is
+ * defined by the frontend, why not use it???
+ */
+ fepriv->min_delay = HZ / 20;
+ fepriv->step_size = 0; /* no zigzag */
fepriv->max_drift = 0;
break;
}
struct dvb_device *dvbdev = file->private_data;
struct dvb_frontend *fe = dvbdev->priv;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int cb_err, err = -EOPNOTSUPP;
if (fe->dvb->fe_ioctl_override) {
memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
+ /*
+ * Associate the 4 delivery systems supported by DVBv3
+ * API with their DVBv5 counterpart. For the other standards,
+ * use the closest type, assuming that it would hopefully
+ * work with a DVBv3 application.
+ * It should be noticed that, on multi-frontend devices with
+ * different types (terrestrial and cable, for example),
+ * a pure DVBv3 application won't be able to use all delivery
+ * systems. Yet, changing the DVBv5 cache to the other delivery
+ * system should be enough for making it work.
+ */
+ switch (dvbv3_type(c->delivery_system)) {
+ case DVBV3_QPSK:
+ fe->ops.info.type = FE_QPSK;
+ break;
+ case DVBV3_ATSC:
+ fe->ops.info.type = FE_ATSC;
+ break;
+ case DVBV3_QAM:
+ fe->ops.info.type = FE_QAM;
+ break;
+ case DVBV3_OFDM:
+ fe->ops.info.type = FE_OFDM;
+ break;
+ default:
+ printk(KERN_ERR
+ "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
+ __func__, c->delivery_system);
+ fe->ops.info.type = FE_OFDM;
+ }
+
/* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
* do it, it is done for it. */
info->caps |= FE_CAN_INVERSION_AUTO;
break;
case FE_SET_FRONTEND:
- err = dtv_set_frontend(file, cmd, parg);
+ /* Synchronise DVBv5 parameters from DVBv3 */
+ memcpy (&fepriv->parameters_in, parg,
+ sizeof (struct dvb_frontend_parameters));
+ err = dtv_property_cache_sync(fe, c, &fepriv->parameters_in);
+ if (err)
+ break;
+ err = dtv_set_frontend(fe);
break;
case FE_GET_EVENT:
err = dvb_frontend_get_event (fe, parg, file->f_flags);
dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
fe, DVB_DEVICE_FRONTEND);
+ /*
+ * Initialize the cache to the proper values according with the
+ * first supported delivery system (ops->delsys[0])
+ */
+ dvb_frontend_clear_cache(fe);
+
mutex_unlock(&frontend_mutex);
return 0;
}
projects / mv-sheeva.git / commitdiff