mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 13:41:55 +00:00
V4L/DVB (9000): S2API: Cleanup code that prepares tuning structures.
Signed-off-by: Steven Toth <stoth@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
parent
ee33c525c4
commit
d5748f1079
@ -1001,6 +1001,8 @@ void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parame
|
||||
{
|
||||
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
||||
|
||||
printk("%s()\n", __FUNCTION__);
|
||||
|
||||
c->frequency = p->frequency;
|
||||
c->inversion = p->inversion;
|
||||
|
||||
@ -1029,153 +1031,114 @@ void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parame
|
||||
}
|
||||
}
|
||||
|
||||
int dtv_property_cache_submit(struct dvb_frontend *fe)
|
||||
/* Ensure the cached values are set correctly in the frontend
|
||||
* legacy tuning structures, for the advanced tuning API.
|
||||
*/
|
||||
void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
|
||||
{
|
||||
|
||||
/* We have to do one of two things:
|
||||
* To support legacy devices using the new API we take values from
|
||||
* the tv_cache and generate a legacy truning structure.
|
||||
*
|
||||
* Or,
|
||||
*
|
||||
* To support advanced tuning devices with the new API we
|
||||
* notify the new advance driver type that a tuning operation is required
|
||||
* and let it pull values from the cache as is, we don't need to
|
||||
* pass structures.
|
||||
*
|
||||
* We'll use the modulation type to assess how this is handled. as the API
|
||||
* progresses we'll probably want to have a flag in dvb_frontend_ops
|
||||
* to allow the frontend driver to dictate how it likes to be tuned.
|
||||
*
|
||||
* Because of how this is attached to the ioctl handler for legacy support,
|
||||
* it's important to return an appropriate result code with atleast the following
|
||||
* three meanings:
|
||||
* < 0 = processing error
|
||||
* 0 = lecagy ioctl handler to submit a traditional set_frontend() call.
|
||||
* 1 = lecagy ioctl handler should NOT submit a traditional set_frontend() call.
|
||||
*/
|
||||
|
||||
int r;
|
||||
|
||||
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
||||
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
||||
struct dvb_frontend_parameters p;
|
||||
struct dvb_frontend_parameters *p = &fepriv->parameters;
|
||||
|
||||
printk("%s()\n", __FUNCTION__);
|
||||
|
||||
/* For legacy delivery systems we don't need the delivery_system to be specified */
|
||||
p->frequency = c->frequency;
|
||||
p->inversion = c->inversion;
|
||||
|
||||
switch (fe->ops.info.type) {
|
||||
case FE_QPSK:
|
||||
printk("%s() Preparing QPSK req\n", __FUNCTION__);
|
||||
p->u.qpsk.symbol_rate = c->symbol_rate;
|
||||
p->u.qpsk.fec_inner = c->fec_inner;
|
||||
break;
|
||||
case FE_QAM:
|
||||
printk("%s() Preparing QAM req\n", __FUNCTION__);
|
||||
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:
|
||||
printk("%s() Preparing OFDM req\n", __FUNCTION__);
|
||||
p->u.ofdm.bandwidth = c->bandwidth;
|
||||
p->u.ofdm.code_rate_HP = c->code_rate_HP;
|
||||
p->u.ofdm.code_rate_LP = c->code_rate_LP;
|
||||
p->u.ofdm.constellation = c->modulation;
|
||||
p->u.ofdm.transmission_mode = c->transmission_mode;
|
||||
p->u.ofdm.guard_interval = c->guard_interval;
|
||||
p->u.ofdm.hierarchy_information = c->hierarchy;
|
||||
break;
|
||||
case FE_ATSC:
|
||||
printk("%s() Preparing VSB req\n", __FUNCTION__);
|
||||
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.
|
||||
*/
|
||||
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;
|
||||
|
||||
printk("%s()\n", __FUNCTION__);
|
||||
|
||||
p->frequency = c->frequency;
|
||||
p->inversion = c->inversion;
|
||||
|
||||
switch(c->modulation) {
|
||||
case _8PSK:
|
||||
case _16APSK:
|
||||
case NBC_QPSK:
|
||||
p->u.qpsk.symbol_rate = c->symbol_rate;
|
||||
p->u.qpsk.fec_inner = c->fec_inner;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if(c->delivery_system == SYS_ISDBT) {
|
||||
/* Fake out a generic DVB-T request so we pass validation in the ioctl */
|
||||
p->frequency = c->frequency;
|
||||
p->inversion = INVERSION_AUTO;
|
||||
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.bandwidth = BANDWIDTH_AUTO;
|
||||
p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
|
||||
p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
|
||||
p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
|
||||
}
|
||||
}
|
||||
|
||||
void dtv_property_cache_submit(struct dvb_frontend *fe)
|
||||
{
|
||||
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
||||
|
||||
printk("%s()\n", __FUNCTION__);
|
||||
|
||||
/* 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)) {
|
||||
|
||||
printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation);
|
||||
switch(c->modulation) {
|
||||
case QPSK:
|
||||
printk("%s() Preparing QPSK req\n", __FUNCTION__);
|
||||
p.frequency = c->frequency;
|
||||
p.inversion = c->inversion;
|
||||
p.u.qpsk.symbol_rate = c->symbol_rate;
|
||||
p.u.qpsk.fec_inner = c->fec_inner;
|
||||
memcpy(&fepriv->parameters, &p,
|
||||
sizeof (struct dvb_frontend_parameters));
|
||||
dtv_property_legacy_params_sync(fe);
|
||||
|
||||
/* Call the traditional tuning mechanisms. */
|
||||
|
||||
r = 0;
|
||||
break;
|
||||
case QAM_16:
|
||||
case QAM_32:
|
||||
case QAM_64:
|
||||
case QAM_128:
|
||||
case QAM_256:
|
||||
case QAM_AUTO:
|
||||
printk("%s() Preparing QAM req\n", __FUNCTION__);
|
||||
p.frequency = c->frequency;
|
||||
p.inversion = c->inversion;
|
||||
p.u.qam.symbol_rate = c->symbol_rate;
|
||||
p.u.vsb.modulation = c->modulation;
|
||||
printk("%s() frequency = %d\n", __FUNCTION__, p.frequency);
|
||||
printk("%s() QAM = %d\n", __FUNCTION__, p.u.vsb.modulation);
|
||||
memcpy(&fepriv->parameters, &p,
|
||||
sizeof (struct dvb_frontend_parameters));
|
||||
|
||||
/* At this point we're fully formed for backwards
|
||||
* compatability and we need to return this
|
||||
* via the ioctl handler as SET_FRONTEND (arg).
|
||||
* We've already patched the new values into the
|
||||
* frontends tuning structures so the ioctl code just
|
||||
* continues as if a legacy tune structure was passed
|
||||
* from userspace.
|
||||
*/
|
||||
|
||||
r = 0;
|
||||
break;
|
||||
case VSB_8:
|
||||
case VSB_16:
|
||||
printk("%s() Preparing VSB req\n", __FUNCTION__);
|
||||
p.frequency = c->frequency;
|
||||
p.u.vsb.modulation = c->modulation;
|
||||
memcpy(&fepriv->parameters, &p,
|
||||
sizeof (struct dvb_frontend_parameters));
|
||||
|
||||
/* Call the traditional tuning mechanisms. */
|
||||
|
||||
r = 0;
|
||||
break;
|
||||
/* TODO: Add any missing modulation types */
|
||||
default:
|
||||
r = -1;
|
||||
}
|
||||
} else {
|
||||
printk("%s() adv, modulation = %d\n", __FUNCTION__, 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.
|
||||
*/
|
||||
r = -1;
|
||||
|
||||
switch(c->modulation) {
|
||||
case _8PSK:
|
||||
case _16APSK:
|
||||
case NBC_QPSK:
|
||||
/* Just post a notification to the demod driver and let it pull
|
||||
* the specific values it wants from its dtv_property_cache.
|
||||
* It can decide how best to use those parameters.
|
||||
* IOCTL will call set_frontend (by default) due to zigzag
|
||||
* support etc.
|
||||
*/
|
||||
if (fe->ops.set_params)
|
||||
r = fe->ops.set_params(fe);
|
||||
|
||||
p.frequency = c->frequency;
|
||||
p.inversion = c->inversion;
|
||||
p.u.qpsk.symbol_rate = c->symbol_rate;
|
||||
p.u.qpsk.fec_inner = c->fec_inner;
|
||||
memcpy(&fepriv->parameters, &p,
|
||||
sizeof (struct dvb_frontend_parameters));
|
||||
|
||||
r = 0;
|
||||
break;
|
||||
default:
|
||||
r = -1;
|
||||
}
|
||||
|
||||
if(c->delivery_system == SYS_ISDBT) {
|
||||
/* Fake out a generic DVB-T request so we pass validation in the ioctl */
|
||||
p.frequency = c->frequency;
|
||||
p.inversion = INVERSION_AUTO;
|
||||
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.bandwidth = BANDWIDTH_AUTO;
|
||||
p.u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
|
||||
p.u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
|
||||
p.u.ofdm.hierarchy_information = HIERARCHY_AUTO;
|
||||
memcpy(&fepriv->parameters, &p,
|
||||
sizeof (struct dvb_frontend_parameters));
|
||||
|
||||
r = 0;
|
||||
}
|
||||
dtv_property_adv_params_sync(fe);
|
||||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
|
||||
@ -1203,13 +1166,13 @@ int dtv_property_process(struct dvb_frontend *fe, struct dtv_property *tvp,
|
||||
break;
|
||||
case DTV_TUNE:
|
||||
/* interpret the cache of data, build either a traditional frontend
|
||||
* tunerequest and submit it to a subset of the ioctl handler,
|
||||
* or, call a new undefined method on the frontend to deal with
|
||||
* all new tune requests.
|
||||
* tunerequest so we can pass validation in the FE_SET_FRONTEND
|
||||
* ioctl.
|
||||
*/
|
||||
fe->dtv_property_cache.state = tvp->cmd;
|
||||
printk("%s() Finalised property cache\n", __FUNCTION__);
|
||||
r |= dtv_property_cache_submit(fe);
|
||||
dtv_property_cache_submit(fe);
|
||||
|
||||
r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
|
||||
&fepriv->parameters);
|
||||
break;
|
||||
|
Loading…
Reference in New Issue
Block a user