On 30-12-2011 15:16, e9hack wrote:
> Hi Mauro,
>
> your patch fixes the problem for the tda10021.c and tda10023.c. The
> drxk_hard.c is a
> second problem. It is introduced by tda18271c2dd.c:
>
> static int set_params(struct dvb_frontend *fe,
> struct dvb_frontend_parameters *params)
> {
> struct tda_state *state = fe->tuner_priv;
> int status = 0;
> int Standard;
> u32 bw = fe->dtv_property_cache.bandwidth_hz;
> u32 delsys = fe->dtv_property_cache.delivery_system;
>
> state->m_Frequency = fe->dtv_property_cache.frequency;
>
> switch (delsys) {
> case SYS_DVBT:
> case SYS_DVBT2:
> switch (bw) {
> case 6000000:
> Standard = HF_DVBT_6MHZ;
> break;
> case 7000000:
> Standard = HF_DVBT_7MHZ;
> break;
> case 8000000:
> Standard = HF_DVBT_8MHZ;
> break;
> default:
> return -EINVAL;
> }
> case SYS_DVBC_ANNEX_A:
> case SYS_DVBC_ANNEX_C:
> if (bw <= 6000000)
> Standard = HF_DVBC_6MHZ;
> else if (bw <= 7000000)
> Standard = HF_DVBC_7MHZ;
> else
> Standard = HF_DVBC_8MHZ;
> default:
> return -EINVAL;
> }
>
> A break is missing before the default statement. Delivery systems for DVB-C
> result always
> in an error. It is difficult for me to find the file itself with this content
> in the git
> repositories. I got the file from
> http://linuxtv.org/downloads/drivers/linux-media-2011-12-25.tar.bz2.
Oh! I hate "break" statements ;) it is easy to forget one, and the
compiler doesn't warn about that.
Thanks for pointing it. I'll add a patch fixing this bug.
>
> Regards,
> Hartmut
>
>
> Am 30.12.2011 14:19, schrieb Mauro Carvalho Chehab:
>> 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 <mche...@redhat.com>
>> 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 <mche...@redhat.com>
>>
>> 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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