On 28-12-2011 13:50, e9hack wrote:
> Hi Mauro,
>
> your changset breaks the auto-inversion capability of dvb_frontend.c for
> frontends which
> doesn't implement auto-inversion. Currently tda10021.c, tda10023.c and
> drxk_hard.c are not
> working. They fail at the following check:
>
>
> 231 static int tda10021_set_parameters (struct dvb_frontend *fe)
> ....
> 232 {
> 279 if (c->inversion != INVERSION_ON && c->inversion !=
> INVERSION_OFF)
> 280 return -EINVAL;
>
> The given inversion is INVERSION_AUTO.
>
> Regards,
> Hartmut
>
Hi Hartmut,
Thanks for testing!
The issue here is that the dvb_frontend sometimes update only the DVBv3
parameters.
This is probably affecting DVBv5 drivers that may be lacking some features,
like zigzag support and DVB core emulation for INVERSION_AUTO.
The enclosed patch should fix it.
I'll latter dig into dvb_frontend, in order to replace the tests for info.type
there to c->delivery_system, as it might still have some bugs there due to
that.
From: Mauro Carvalho Chehab <[email protected]>
Date: Fri, 30 Dec 2011 10:30:25 -0200
Subject: [PATCH] dvb_frontend: Fix inversion breakage due to DVBv5 conversion
On several places inside dvb_frontend, only the DVBv3 parameters
were updated. Change it to be sure that, on all places, the DVBv5
parameters will be changed instead.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c
b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 9dd30be..9d092a6 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -288,12 +288,13 @@ static int dvb_frontend_swzigzag_autotune(struct
dvb_frontend *fe, int check_wra
int ready = 0;
int fe_set_err = 0;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
- int original_inversion = fepriv->parameters_in.inversion;
- u32 original_frequency = fepriv->parameters_in.frequency;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
+ int original_inversion = c->inversion;
+ u32 original_frequency = c->frequency;
/* are we using autoinversion? */
autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
- (fepriv->parameters_in.inversion == INVERSION_AUTO));
+ (c->inversion == INVERSION_AUTO));
/* setup parameters correctly */
while(!ready) {
@@ -359,19 +360,20 @@ static int dvb_frontend_swzigzag_autotune(struct
dvb_frontend *fe, int check_wra
fepriv->auto_step, fepriv->auto_sub_step,
fepriv->started_auto_step);
/* set the frontend itself */
- fepriv->parameters_in.frequency += fepriv->lnb_drift;
+ c->frequency += fepriv->lnb_drift;
if (autoinversion)
- fepriv->parameters_in.inversion = fepriv->inversion;
+ c->inversion = fepriv->inversion;
+ tmp = *c;
if (fe->ops.set_frontend)
fe_set_err = fe->ops.set_frontend(fe);
- fepriv->parameters_out = fepriv->parameters_in;
+ *c = tmp;
if (fe_set_err < 0) {
fepriv->state = FESTATE_ERROR;
return fe_set_err;
}
- fepriv->parameters_in.frequency = original_frequency;
- fepriv->parameters_in.inversion = original_inversion;
+ c->frequency = original_frequency;
+ c->inversion = original_inversion;
fepriv->auto_sub_step++;
return 0;
@@ -382,6 +384,7 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
fe_status_t s = 0;
int retval = 0;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
/* if we've got no parameters, just keep idling */
if (fepriv->state & FESTATE_IDLE) {
@@ -393,9 +396,10 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
/* in SCAN mode, we just set the frontend when asked and leave it alone
*/
if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
if (fepriv->state & FESTATE_RETUNE) {
+ tmp = *c;
if (fe->ops.set_frontend)
retval = fe->ops.set_frontend(fe);
- fepriv->parameters_out = fepriv->parameters_in;
+ *c = tmp;
if (retval < 0)
fepriv->state = FESTATE_ERROR;
else
@@ -425,8 +429,8 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
/* if we're tuned, then we have determined the correct
inversion */
if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
- (fepriv->parameters_in.inversion == INVERSION_AUTO)) {
- fepriv->parameters_in.inversion = fepriv->inversion;
+ (c->inversion == INVERSION_AUTO)) {
+ c->inversion = fepriv->inversion;
}
return;
}
@@ -1976,14 +1980,14 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
/* force auto frequency inversion if requested */
if (dvb_force_auto_inversion) {
- fepriv->parameters_in.inversion = INVERSION_AUTO;
+ 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 (fepriv->parameters_in.u.ofdm.hierarchy_information
== HIERARCHY_NONE &&
- fepriv->parameters_in.u.ofdm.code_rate_LP ==
FEC_NONE)
- fepriv->parameters_in.u.ofdm.code_rate_LP =
FEC_AUTO;
+ if (c->hierarchy == HIERARCHY_NONE &&
+ c->code_rate_LP == FEC_NONE)
+ c->code_rate_LP = FEC_AUTO;
}
/* get frontend-specific tuning settings */
@@ -1996,8 +2000,8 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
switch(fe->ops.info.type) {
case FE_QPSK:
fepriv->min_delay = HZ/20;
- fepriv->step_size =
fepriv->parameters_in.u.qpsk.symbol_rate / 16000;
- fepriv->max_drift =
fepriv->parameters_in.u.qpsk.symbol_rate / 2000;
+ fepriv->step_size = c->symbol_rate / 16000;
+ fepriv->max_drift = c->symbol_rate / 2000;
break;
case FE_QAM:
--
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