[PATCH] DVB-S2 multistream support

[PATCH] DVB-S2 multistream support

[CrazyCat]

[-- Attachment #1: Type: text/plain, Size: 296 bytes --]

Now present DTV_DVBT2_PLP_ID property for DVB-T2, so i add alias DTV_DVBS2_MIS_ID (same feature for advanced DVB-S2). Now DVB-S2 multistream filtration supported for current STV090x demod cut 3.0, so i implement support for stv090x demod driver. Additional fe-caps FE_CAN_MULTISTREAM also added.

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: frontend-mis.patch --]
[-- Type: text/x-c; name="frontend-mis.patch", Size: 3476 bytes --]

diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index f50d405..f625f8d 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -62,6 +62,7 @@ typedef enum fe_caps {
 	FE_CAN_8VSB			= 0x200000,
 	FE_CAN_16VSB			= 0x400000,
 	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
+	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
 	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
 	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
 	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
@@ -317,6 +318,7 @@ struct dvb_frontend_event {
 #define DTV_ISDBS_TS_ID		42
 
 #define DTV_DVBT2_PLP_ID	43
+#define DTV_DVBS2_MIS_ID	43
 
 #define DTV_ENUM_DELSYS		44
 
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index aebcdf2..83e51f9 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -947,7 +947,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 	}
 
 	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
+	c->dvbt2_plp_id = -1;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index ea86a56..eb6f1cf 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3425,6 +3425,33 @@ err:
 	return -1;
 }
 
+static int stv090x_set_mis(struct stv090x_state *state, int mis)
+{
+	u32 reg;
+
+	if (mis<0 || mis>255) {
+		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+	} else {
+		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
+			goto err;
+	}
+	return 0;
+err:
+	dprintk(FE_ERROR, 1, "I/O error");
+	return -1;
+}
+
 static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3433,6 +3460,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 	if (props->frequency == 0)
 		return DVBFE_ALGO_SEARCH_INVALID;
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	state->delsys = props->delivery_system;
 	state->frequency = props->frequency;
 	state->srate = props->symbol_rate;
@@ -3447,6 +3476,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4829,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 		}
 	}
 
+	if (state->internal->dev_ver>=0x30)
+	    state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 	/* workaround for stuck DiSEqC output */
 	if (config->diseqc_envelope_mode)
 		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);

Re: [PATCH] DVB-S2 multistream support

[Mauro Carvalho Chehab]

Em 13-07-2012 20:15, CrazyCat escreveu:
> Now present DTV_DVBT2_PLP_ID property for DVB-T2, so i add alias DTV_DVBS2_MIS_ID (same feature for advanced DVB-S2). Now DVB-S2 multistream filtration supported for current STV090x demod cut 3.0, so i implement support for stv090x demod driver. Additional fe-caps FE_CAN_MULTISTREAM also added.
> 
> 
> frontend-mis.patch

Please provide your Signed-off-by: (with your real name).

> 
> 
> diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
> index f50d405..f625f8d 100644
> --- a/include/linux/dvb/frontend.h
> +++ b/include/linux/dvb/frontend.h
> @@ -62,6 +62,7 @@ typedef enum fe_caps {
>  	FE_CAN_8VSB			= 0x200000,
>  	FE_CAN_16VSB			= 0x400000,
>  	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
> +	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */

Not sure if this is really needed. Are there any DVB-S2 frontends that
don't support MIS, or they don't implement it just because this weren't
defined yet? In the latter case, it would be better to not adding an
special flag for it.

>  	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
>  	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
>  	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
> @@ -317,6 +318,7 @@ struct dvb_frontend_event {
>  #define DTV_ISDBS_TS_ID		42
>  
>  #define DTV_DVBT2_PLP_ID	43
> +#define DTV_DVBS2_MIS_ID	43

It would be better to define it as:

#define DTV_DVBS2_MIS_ID	DTV_DVBT2_PLP_ID

Even better, we should instead find a better name that would cover both
DVB-T2 and DVB-S2 program ID fields, like:

#define DTV_DVB_MULT		43
#define DTV_DVBT2_PLP_ID	DTV_DVB_MULT

And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
legacy symbol.

Also, DocBook needs to be changed to reflect this change.

>  
>  #define DTV_ENUM_DELSYS		44
>  
> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
> index aebcdf2..83e51f9 100644
> --- a/drivers/media/dvb/dvb-core/dvb_frontend.c
> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
> @@ -947,7 +947,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
>  	}
>  
>  	c->isdbs_ts_id = 0;
> -	c->dvbt2_plp_id = 0;
> +	c->dvbt2_plp_id = -1;
>  
>  	switch (c->delivery_system) {
>  	case SYS_DVBS:
> diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
> index ea86a56..eb6f1cf 100644
> --- a/drivers/media/dvb/frontends/stv090x.c
> +++ b/drivers/media/dvb/frontends/stv090x.c
> @@ -3425,6 +3425,33 @@ err:
>  	return -1;
>  }
>  
> +static int stv090x_set_mis(struct stv090x_state *state, int mis)
> +{
> +	u32 reg;
> +
> +	if (mis<0 || mis>255) {

You should be checking your patch using scripts/checkpatch.pl.
Due to Documentation/CodingStyle, the above should be written, instead, as:
	if (mis < 0 || mis > 255) {


> +		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +	} else {
> +		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
> +			goto err;
> +	}
> +	return 0;
> +err:
> +	dprintk(FE_ERROR, 1, "I/O error");
> +	return -1;
> +}
> +
>  static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>  {
>  	struct stv090x_state *state = fe->demodulator_priv;
> @@ -3433,6 +3460,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>  	if (props->frequency == 0)
>  		return DVBFE_ALGO_SEARCH_INVALID;
>  
> +	stv090x_set_mis(state,props->dvbt2_plp_id);
> +
>  	state->delsys = props->delivery_system;
>  	state->frequency = props->frequency;
>  	state->srate = props->symbol_rate;
> @@ -3447,6 +3476,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>  		state->search_range = 5000000;
>  	}
>  
> +	stv090x_set_mis(state,props->dvbt2_plp_id);
> +
>  	if (stv090x_algo(state) == STV090x_RANGEOK) {
>  		dprintk(FE_DEBUG, 1, "Search success!");
>  		return DVBFE_ALGO_SEARCH_SUCCESS;
> @@ -4798,6 +4829,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
>  		}
>  	}
>  
> +	if (state->internal->dev_ver>=0x30)
> +	    state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
> +
>  	/* workaround for stuck DiSEqC output */
>  	if (config->diseqc_envelope_mode)
>  		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);
> 

Regards,
Mauro

Re: [PATCH] DVB-S2 multistream support

[Manu Abraham]

On Sat, Aug 11, 2012 at 3:42 AM, Mauro Carvalho Chehab
<mchehab@redhat.com> wrote:
> Em 13-07-2012 20:15, CrazyCat escreveu:
>> Now present DTV_DVBT2_PLP_ID property for DVB-T2, so i add alias DTV_DVBS2_MIS_ID (same feature for advanced DVB-S2). Now DVB-S2 multistream filtration supported for current STV090x demod cut 3.0, so i implement support for stv090x demod driver. Additional fe-caps FE_CAN_MULTISTREAM also added.
>>
>>
>> frontend-mis.patch
>
> Please provide your Signed-off-by: (with your real name).
>
>>
>>
>> diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
>> index f50d405..f625f8d 100644
>> --- a/include/linux/dvb/frontend.h
>> +++ b/include/linux/dvb/frontend.h
>> @@ -62,6 +62,7 @@ typedef enum fe_caps {
>>       FE_CAN_8VSB                     = 0x200000,
>>       FE_CAN_16VSB                    = 0x400000,
>>       FE_HAS_EXTENDED_CAPS            = 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
>> +     FE_CAN_MULTISTREAM              = 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
>
> Not sure if this is really needed. Are there any DVB-S2 frontends that
> don't support MIS, or they don't implement it just because this weren't
> defined yet? In the latter case, it would be better to not adding an
> special flag for it.

There are some demods that do not support Advanced Modes ..

>
>>       FE_CAN_TURBO_FEC                = 0x8000000,  /* frontend supports "turbo fec modulation" */
>>       FE_CAN_2G_MODULATION            = 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
>>       FE_NEEDS_BENDING                = 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
>> @@ -317,6 +318,7 @@ struct dvb_frontend_event {
>>  #define DTV_ISDBS_TS_ID              42
>>
>>  #define DTV_DVBT2_PLP_ID     43
>> +#define DTV_DVBS2_MIS_ID     43
>
> It would be better to define it as:
>
> #define DTV_DVBS2_MIS_ID        DTV_DVBT2_PLP_ID
>
> Even better, we should instead find a better name that would cover both
> DVB-T2 and DVB-S2 program ID fields, like:
>
> #define DTV_DVB_MULT            43
> #define DTV_DVBT2_PLP_ID        DTV_DVB_MULT


In fact that is also incorrect.

DVB-S2 uses TS ID at Link Layer
at Physical layer there is BBHEADER.

DVB-T2 uses PLP ID at Physical Layer

ISDB-S uses Stream ID

ISDB-T uses Layer A, LayerB, Layer C


>
> And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
> legacy symbol.
>
> Also, DocBook needs to be changed to reflect this change.
>
>>
>>  #define DTV_ENUM_DELSYS              44
>>
>> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
>> index aebcdf2..83e51f9 100644
>> --- a/drivers/media/dvb/dvb-core/dvb_frontend.c
>> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
>> @@ -947,7 +947,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
>>       }
>>
>>       c->isdbs_ts_id = 0;
>> -     c->dvbt2_plp_id = 0;
>> +     c->dvbt2_plp_id = -1;
>>
>>       switch (c->delivery_system) {
>>       case SYS_DVBS:
>> diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
>> index ea86a56..eb6f1cf 100644
>> --- a/drivers/media/dvb/frontends/stv090x.c
>> +++ b/drivers/media/dvb/frontends/stv090x.c
>> @@ -3425,6 +3425,33 @@ err:
>>       return -1;
>>  }
>>
>> +static int stv090x_set_mis(struct stv090x_state *state, int mis)
>> +{
>> +     u32 reg;
>> +
>> +     if (mis<0 || mis>255) {
>
> You should be checking your patch using scripts/checkpatch.pl.
> Due to Documentation/CodingStyle, the above should be written, instead, as:
>         if (mis < 0 || mis > 255) {
>
>
>> +             dprintk(FE_DEBUG, 1, "Disable MIS filtering");
>> +             reg = STV090x_READ_DEMOD(state, PDELCTRL1);
>> +             STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
>> +             if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
>> +                     goto err;
>> +     } else {
>> +             dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
>> +             reg = STV090x_READ_DEMOD(state, PDELCTRL1);
>> +             STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
>> +             if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
>> +                     goto err;
>> +             if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
>> +                     goto err;
>> +             if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
>> +                     goto err;
>> +     }
>> +     return 0;
>> +err:
>> +     dprintk(FE_ERROR, 1, "I/O error");
>> +     return -1;
>> +}
>> +
>>  static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>>  {
>>       struct stv090x_state *state = fe->demodulator_priv;
>> @@ -3433,6 +3460,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>>       if (props->frequency == 0)
>>               return DVBFE_ALGO_SEARCH_INVALID;
>>
>> +     stv090x_set_mis(state,props->dvbt2_plp_id);
>> +
>>       state->delsys = props->delivery_system;
>>       state->frequency = props->frequency;
>>       state->srate = props->symbol_rate;
>> @@ -3447,6 +3476,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>>               state->search_range = 5000000;
>>       }
>>
>> +     stv090x_set_mis(state,props->dvbt2_plp_id);
>> +
>>       if (stv090x_algo(state) == STV090x_RANGEOK) {
>>               dprintk(FE_DEBUG, 1, "Search success!");
>>               return DVBFE_ALGO_SEARCH_SUCCESS;
>> @@ -4798,6 +4829,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
>>               }
>>       }
>>
>> +     if (state->internal->dev_ver>=0x30)
>> +         state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
>> +


Which chipset have you tested it on ? The AAC or the BAC and what
silicon cut version, 3 or 4 ?

Additionally, support is needed at the demuxer for handling  GS
(Generic Streams),
MS (Multiple Streams additionally) and BBHEADER. We don't have that yet in here.

Did you try the MIS with a saa716x based bridge ?

Regards,
Manu

Re: [PATCH] DVB-S2 multistream support

[Antti Palosaari]

On 08/11/2012 01:12 AM, Mauro Carvalho Chehab wrote:
> Em 13-07-2012 20:15, CrazyCat escreveu:

>>   #define DTV_ISDBS_TS_ID		42
>>
>>   #define DTV_DVBT2_PLP_ID	43
>> +#define DTV_DVBS2_MIS_ID	43
>
> It would be better to define it as:
>
> #define DTV_DVBS2_MIS_ID	DTV_DVBT2_PLP_ID
>
> Even better, we should instead find a better name that would cover both
> DVB-T2 and DVB-S2 program ID fields, like:
>
> #define DTV_DVB_MULT		43
> #define DTV_DVBT2_PLP_ID	DTV_DVB_MULT
>
> And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
> legacy symbol.

Also DTV_ISDBS_TS_ID means same. All these three DTV_ISDBS_TS_ID, 
DTV_DVBT2_PLP_ID and DTV_DVBS2_MIS_ID are same thing - just named 
differently between standards. I vote for common name TS ID (I have said 
that already enough many times...).

Research paper [1] ISDB-S says:
"
New technologies like the trellis-coded 8PSK (TC8PSK) modulation scheme 
were adopted for this section to improve transmission capacity as much 
as possible and to enable multiple transport streams (TSs) to be handled 
by one carrier. This channel coding system has consequently become a 
system standard known for its flexibility and extendibility.
"
"
It enables multiple MPEG-TSs to be transmitted with one transponder, and 
because transmission systems can be switched for each TS signal, it 
enables TS signals produced by each broadcaster to be transmitted 
independently.
"

[1] http://www.tijbc.com/pruebas-7419/I0782925.pdf

regards
Antti

-- 
http://palosaari.fi/

Re: [PATCH] DVB-S2 multistream support

[Manu Abraham]

On Sat, Aug 11, 2012 at 5:44 AM, Antti Palosaari <crope@iki.fi> wrote:
> On 08/11/2012 01:12 AM, Mauro Carvalho Chehab wrote:
>>
>> Em 13-07-2012 20:15, CrazyCat escreveu:
>
>
>>>   #define DTV_ISDBS_TS_ID               42
>>>
>>>   #define DTV_DVBT2_PLP_ID      43
>>> +#define DTV_DVBS2_MIS_ID       43
>>
>>
>> It would be better to define it as:
>>
>> #define DTV_DVBS2_MIS_ID        DTV_DVBT2_PLP_ID
>>
>> Even better, we should instead find a better name that would cover both
>> DVB-T2 and DVB-S2 program ID fields, like:
>>
>> #define DTV_DVB_MULT            43
>> #define DTV_DVBT2_PLP_ID        DTV_DVB_MULT
>>
>> And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
>> legacy symbol.
>
>
> Also DTV_ISDBS_TS_ID means same. All these three DTV_ISDBS_TS_ID,
> DTV_DVBT2_PLP_ID and DTV_DVBS2_MIS_ID are same thing - just named
> differently between standards. I vote for common name TS ID (I have said
> that already enough many times...).

I agree, but a still more generic term like STREAM_ID would be more
appropriate,
as it happens at different layers for different delivery
systems.DVB-S2 additionally
provides BBHEADER at Physical Layer. In any case setting PLP_ID for DVB-S2
is completely confusing.

Anyway, the demuxer part is also missing ..

If you look a bit more deeper, you will see that the framing structure
with ISDB-T
is exactly the same as with ISDB-S, which makes ISDB-T also no different, just
that the frontend userspace header is just fucked up with junk.

The major chunk for the ISDB-T stuff in the frontend header is
completely redundant.

Regards,
Manu

Re: [PATCH] DVB-S2 multistream support

[Antti Palosaari]

On 08/11/2012 03:31 AM, Manu Abraham wrote:
> On Sat, Aug 11, 2012 at 5:44 AM, Antti Palosaari <crope@iki.fi> wrote:
>> On 08/11/2012 01:12 AM, Mauro Carvalho Chehab wrote:
>>>
>>> Em 13-07-2012 20:15, CrazyCat escreveu:
>>
>>
>>>>    #define DTV_ISDBS_TS_ID               42
>>>>
>>>>    #define DTV_DVBT2_PLP_ID      43
>>>> +#define DTV_DVBS2_MIS_ID       43
>>>
>>>
>>> It would be better to define it as:
>>>
>>> #define DTV_DVBS2_MIS_ID        DTV_DVBT2_PLP_ID
>>>
>>> Even better, we should instead find a better name that would cover both
>>> DVB-T2 and DVB-S2 program ID fields, like:
>>>
>>> #define DTV_DVB_MULT            43
>>> #define DTV_DVBT2_PLP_ID        DTV_DVB_MULT
>>>
>>> And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
>>> legacy symbol.
>>
>>
>> Also DTV_ISDBS_TS_ID means same. All these three DTV_ISDBS_TS_ID,
>> DTV_DVBT2_PLP_ID and DTV_DVBS2_MIS_ID are same thing - just named
>> differently between standards. I vote for common name TS ID (I have said
>> that already enough many times...).
>
> I agree, but a still more generic term like STREAM_ID would be more
> appropriate,

Ack. Since this stream could be something else than MPEG2-TS better to 
give more generic name.

> as it happens at different layers for different delivery
> systems.DVB-S2 additionally
> provides BBHEADER at Physical Layer. In any case setting PLP_ID for DVB-S2
> is completely confusing.
>
> Anyway, the demuxer part is also missing ..

Demuxer for MIS? I am not any familiar with MIS but I know there is 
"raw" demux payload used already for ATSC-M/H. It just passes all the 
data coming from demod "TS".

> If you look a bit more deeper, you will see that the framing structure
> with ISDB-T
> is exactly the same as with ISDB-S, which makes ISDB-T also no different, just
> that the frontend userspace header is just fucked up with junk.
>
> The major chunk for the ISDB-T stuff in the frontend header is
> completely redundant.
>
> Regards,
> Manu
>

regards
Antti

-- 
http://palosaari.fi/

Re: [PATCH] DVB-S2 multistream support

[Manu Abraham]

On Sat, Aug 11, 2012 at 6:37 AM, Antti Palosaari <crope@iki.fi> wrote:
> On 08/11/2012 03:31 AM, Manu Abraham wrote:
>>
>> On Sat, Aug 11, 2012 at 5:44 AM, Antti Palosaari <crope@iki.fi> wrote:
>>>
>>> On 08/11/2012 01:12 AM, Mauro Carvalho Chehab wrote:
>>>>
>>>>
>>>> Em 13-07-2012 20:15, CrazyCat escreveu:
>>>
>>>
>>>
>>>>>    #define DTV_ISDBS_TS_ID               42
>>>>>
>>>>>    #define DTV_DVBT2_PLP_ID      43
>>>>> +#define DTV_DVBS2_MIS_ID       43
>>>>
>>>>
>>>>
>>>> It would be better to define it as:
>>>>
>>>> #define DTV_DVBS2_MIS_ID        DTV_DVBT2_PLP_ID
>>>>
>>>> Even better, we should instead find a better name that would cover both
>>>> DVB-T2 and DVB-S2 program ID fields, like:
>>>>
>>>> #define DTV_DVB_MULT            43
>>>> #define DTV_DVBT2_PLP_ID        DTV_DVB_MULT
>>>>
>>>> And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
>>>> legacy symbol.
>>>
>>>
>>>
>>> Also DTV_ISDBS_TS_ID means same. All these three DTV_ISDBS_TS_ID,
>>> DTV_DVBT2_PLP_ID and DTV_DVBS2_MIS_ID are same thing - just named
>>> differently between standards. I vote for common name TS ID (I have said
>>> that already enough many times...).
>>
>>
>> I agree, but a still more generic term like STREAM_ID would be more
>> appropriate,
>
>
> Ack. Since this stream could be something else than MPEG2-TS better to give
> more generic name.
>
>
>> as it happens at different layers for different delivery
>> systems.DVB-S2 additionally
>> provides BBHEADER at Physical Layer. In any case setting PLP_ID for DVB-S2
>> is completely confusing.
>>
>> Anyway, the demuxer part is also missing ..
>
>
> Demuxer for MIS? I am not any familiar with MIS but I know there is "raw"
> demux payload used already for ATSC-M/H. It just passes all the data coming
> from demod "TS".

Just grabbing and sending the DMA'd data to userspace is not nice.

With ATSC-M/H you don't simply have a TS. With an ATSC-M/H capable
demod, which supports ATSC (standard) outputs a TS. the M/H part is not
a TS at all.

Even with ATSC-M/H passing raw data causes all the IP (network) packets to
be parsed in userspace, which should have been properly done in kernel
space as a filter. If we were to do everything similarly, then we don't need
any API at all, just a simple read and let each application do whatever it
wants.

Regards,
Manu

Re: [PATCH] DVB-S2 multistream support

[CrazyCat]

Stream can be anything :) But for DVB standards this anyway DVBS transport stream 188 byte. Most media-bridges can handle only this stream. Specific generic-continous DVB-S2/T2/C2 streams require extended bus for passing frame-based stream, so this out of V4L DVB.

Now MIS used often for distribution multiple digital terrestial muxes over one satellite carrier (implemented in my patch, now i make patches for VDR and TVHeadend for MIS). DVB-T2 PLP is same, but i not see any real-life implementation (have some tda18712/cxd2820r-based hardware and T2/256QAM-in-air, but only one PLP). Don't know anything about ISDB :)

11.08.2012, 04:07, "Antti Palosaari" <crope@iki.fi>:
>>>>>     #define DTV_ISDBS_TS_ID               42
>>>>>     #define DTV_DVBT2_PLP_ID      43
>>>>>  +#define DTV_DVBS2_MIS_ID       43
>>>>  It would be better to define it as:
>>>>
>>>>  #define DTV_DVBS2_MIS_ID        DTV_DVBT2_PLP_ID
>>>>
>>>>  Even better, we should instead find a better name that would cover both
>>>>  DVB-T2 and DVB-S2 program ID fields, like:

Re: [PATCH] DVB-S2 multistream support

[CrazyCat]

Fixed patch.

Signed-off-by: Evgeny Plehov <EvgenyPlehov@ukr.net>
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index aebcdf2..7813165 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -948,6 +948,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 
 	c->isdbs_ts_id = 0;
 	c->dvbt2_plp_id = 0;
+	c->dvbs2_mis_id = -1;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
@@ -1049,6 +1050,8 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
 	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
 	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
 	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
+
+	_DTV_CMD(DTV_DVBS2_MIS_ID, 1, 0),
 };
 
 static void dtv_property_dump(struct dtv_property *tvp)
@@ -1436,6 +1439,10 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
 		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
 		break;
 
+	case DTV_DVBS2_MIS_ID:
+		tvp->u.data = c->dvbs2_mis_id;
+		break;
+
 	default:
 		return -EINVAL;
 	}
@@ -1786,6 +1793,10 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
 		fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
 		break;
 
+	case DTV_DVBS2_MIS_ID:
+		c->dvbs2_mis_id = tvp->u.data;
+		break;
+
 	default:
 		return -EINVAL;
 	}
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
index 7c64c09..cf10b05 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -374,6 +374,9 @@ struct dtv_frontend_properties {
 	/* DVB-T2 specifics */
 	u32                     dvbt2_plp_id;
 
+	/* DVB-S2 specifics */
+	u32                     dvbs2_mis_id;
+
 	/* ATSC-MH specifics */
 	u8			atscmh_fic_ver;
 	u8			atscmh_parade_id;
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index ea86a56..a9c2bc5 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3425,6 +3425,33 @@ err:
 	return -1;
 }
 
+static int stv090x_set_mis(struct stv090x_state *state, int mis)
+{
+	u32 reg;
+
+	if (mis < 0 || mis > 255) {
+		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+	} else {
+		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
+			goto err;
+	}
+	return 0;
+err:
+	dprintk(FE_ERROR, 1, "I/O error");
+	return -1;
+}
+
 static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state, props->dvbs2_mis_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 		}
 	}
 
+	if (state->internal->dev_ver >= 0x30)
+		state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 	/* workaround for stuck DiSEqC output */
 	if (config->diseqc_envelope_mode)
 		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index f50d405..b37996e 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -62,6 +62,7 @@ typedef enum fe_caps {
 	FE_CAN_8VSB			= 0x200000,
 	FE_CAN_16VSB			= 0x400000,
 	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
+	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
 	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
 	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
 	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
@@ -337,7 +338,9 @@ struct dvb_frontend_event {
 #define DTV_ATSCMH_SCCC_CODE_MODE_C	58
 #define DTV_ATSCMH_SCCC_CODE_MODE_D	59
 
-#define DTV_MAX_COMMAND				DTV_ATSCMH_SCCC_CODE_MODE_D
+#define DTV_DVBS2_MIS_ID	60
+
+#define DTV_MAX_COMMAND				DTV_DVBS2_MIS_ID
 
 typedef enum fe_pilot {
 	PILOT_ON,

Re: [PATCH] DVB-S2 multistream support

[Antti Palosaari]

On 08/12/2012 01:55 AM, CrazyCat wrote:
> Fixed patch.

We asked you to merge isdbs_ts_id, dvbt2_plp_id and dvbs2_mis_id to one 
as those are logically same thing from the user-point of view. 
Technically those differs, but that is userspace API so underlying 
technique should not matter.

It is some more work for you, but it should not be such big issue you 
cannot do. So please use few hours and merge all those. I think correct 
name is DTV_STREAM_ID. So remove isdbs_ts_id, dvbt2_plp_id and 
dvbs2_mis_id. Add new variable stream_id. As DTV_ISDBS_TS_ID and 
DTV_DVBT2_PLP_ID already exists you should make some logic those could 
be still used.

regards
Antti


>
> Signed-off-by: Evgeny Plehov <EvgenyPlehov@ukr.net>
> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
> index aebcdf2..7813165 100644
> --- a/drivers/media/dvb/dvb-core/dvb_frontend.c
> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
> @@ -948,6 +948,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
>
>   	c->isdbs_ts_id = 0;
>   	c->dvbt2_plp_id = 0;
> +	c->dvbs2_mis_id = -1;
>
>   	switch (c->delivery_system) {
>   	case SYS_DVBS:
> @@ -1049,6 +1050,8 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
>   	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
>   	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
>   	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
> +
> +	_DTV_CMD(DTV_DVBS2_MIS_ID, 1, 0),
>   };
>
>   static void dtv_property_dump(struct dtv_property *tvp)
> @@ -1436,6 +1439,10 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
>   		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
>   		break;
>
> +	case DTV_DVBS2_MIS_ID:
> +		tvp->u.data = c->dvbs2_mis_id;
> +		break;
> +
>   	default:
>   		return -EINVAL;
>   	}
> @@ -1786,6 +1793,10 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
>   		fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
>   		break;
>
> +	case DTV_DVBS2_MIS_ID:
> +		c->dvbs2_mis_id = tvp->u.data;
> +		break;
> +
>   	default:
>   		return -EINVAL;
>   	}
> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
> index 7c64c09..cf10b05 100644
> --- a/drivers/media/dvb/dvb-core/dvb_frontend.h
> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
> @@ -374,6 +374,9 @@ struct dtv_frontend_properties {
>   	/* DVB-T2 specifics */
>   	u32                     dvbt2_plp_id;
>
> +	/* DVB-S2 specifics */
> +	u32                     dvbs2_mis_id;
> +
>   	/* ATSC-MH specifics */
>   	u8			atscmh_fic_ver;
>   	u8			atscmh_parade_id;
> diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
> index ea86a56..a9c2bc5 100644
> --- a/drivers/media/dvb/frontends/stv090x.c
> +++ b/drivers/media/dvb/frontends/stv090x.c
> @@ -3425,6 +3425,33 @@ err:
>   	return -1;
>   }
>
> +static int stv090x_set_mis(struct stv090x_state *state, int mis)
> +{
> +	u32 reg;
> +
> +	if (mis < 0 || mis > 255) {
> +		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +	} else {
> +		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
> +			goto err;
> +	}
> +	return 0;
> +err:
> +	dprintk(FE_ERROR, 1, "I/O error");
> +	return -1;
> +}
> +
>   static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>   {
>   	struct stv090x_state *state = fe->demodulator_priv;
> @@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>   		state->search_range = 5000000;
>   	}
>
> +	stv090x_set_mis(state, props->dvbs2_mis_id);
> +
>   	if (stv090x_algo(state) == STV090x_RANGEOK) {
>   		dprintk(FE_DEBUG, 1, "Search success!");
>   		return DVBFE_ALGO_SEARCH_SUCCESS;
> @@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
>   		}
>   	}
>
> +	if (state->internal->dev_ver >= 0x30)
> +		state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
> +
>   	/* workaround for stuck DiSEqC output */
>   	if (config->diseqc_envelope_mode)
>   		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);
> diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
> index f50d405..b37996e 100644
> --- a/include/linux/dvb/frontend.h
> +++ b/include/linux/dvb/frontend.h
> @@ -62,6 +62,7 @@ typedef enum fe_caps {
>   	FE_CAN_8VSB			= 0x200000,
>   	FE_CAN_16VSB			= 0x400000,
>   	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
> +	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
>   	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
>   	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
>   	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
> @@ -337,7 +338,9 @@ struct dvb_frontend_event {
>   #define DTV_ATSCMH_SCCC_CODE_MODE_C	58
>   #define DTV_ATSCMH_SCCC_CODE_MODE_D	59
>
> -#define DTV_MAX_COMMAND				DTV_ATSCMH_SCCC_CODE_MODE_D
> +#define DTV_DVBS2_MIS_ID	60
> +
> +#define DTV_MAX_COMMAND				DTV_DVBS2_MIS_ID
>
>   typedef enum fe_pilot {
>   	PILOT_ON,
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>


-- 
http://palosaari.fi/

Re: [PATCH] DVB-S2 multistream support

[CrazyCat]

Ok, done :) Look like DTV_DVBT2_PLP_ID not implemented for CXD2820r ?

12.08.2012, 03:00, "Antti Palosaari" <crope@iki.fi>:
> We asked you to merge isdbs_ts_id, dvbt2_plp_id and dvbs2_mis_id to one
> as those are logically same thing from the user-point of view.
> Technically those differs, but that is userspace API so underlying
> technique should not matter.
>
> It is some more work for you, but it should not be such big issue you
> cannot do. So please use few hours and merge all those. I think correct
> name is DTV_STREAM_ID. So remove isdbs_ts_id, dvbt2_plp_id and
> dvbs2_mis_id. Add new variable stream_id. As DTV_ISDBS_TS_ID and
> DTV_DVBT2_PLP_ID already exists you should make some logic those could
> be still used.

Signed-off-by: Evgeny Plehov <EvgenyPlehov@ukr.net>
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index f50d405..32d51bc 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -62,6 +62,7 @@ typedef enum fe_caps {
 	FE_CAN_8VSB			= 0x200000,
 	FE_CAN_16VSB			= 0x400000,
 	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
+	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
 	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
 	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
 	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
@@ -314,9 +315,10 @@ struct dvb_frontend_event {
 
 #define DTV_ISDBT_LAYER_ENABLED	41
 
-#define DTV_ISDBS_TS_ID		42
-
-#define DTV_DVBT2_PLP_ID	43
+#define DTV_STREAM_ID		42
+#define DTV_ISDBS_TS_ID		DTV_STREAM_ID
+#define DTV_DVBT2_PLP_ID	DTV_STREAM_ID
+#define DTV_DVBS2_MIS_ID	DTV_STREAM_ID
 
 #define DTV_ENUM_DELSYS		44
 
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index aebcdf2..8fb7eac 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -946,8 +946,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 		c->layer[i].segment_count = 0;
 	}
 
-	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
+	c->stream_id = -1;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
@@ -1017,8 +1016,7 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
 	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
 	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
 
-	_DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
-	_DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
+	_DTV_CMD(DTV_STREAM_ID, 1, 0),
 
 	/* Get */
 	_DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
@@ -1382,11 +1380,9 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
 	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
 		tvp->u.data = c->layer[2].interleaving;
 		break;
-	case DTV_ISDBS_TS_ID:
-		tvp->u.data = c->isdbs_ts_id;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		tvp->u.data = c->dvbt2_plp_id;
+
+	case DTV_STREAM_ID:
+		tvp->u.data = c->stream_id;
 		break;
 
 	/* ATSC-MH */
@@ -1771,11 +1767,8 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
 	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
 		c->layer[2].interleaving = tvp->u.data;
 		break;
-	case DTV_ISDBS_TS_ID:
-		c->isdbs_ts_id = tvp->u.data;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		c->dvbt2_plp_id = tvp->u.data;
+	case DTV_STREAM_ID:
+		c->stream_id = tvp->u.data;
 		break;
 
 	/* ATSC-MH */
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
index 7c64c09..bec0cda 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -368,11 +368,8 @@ struct dtv_frontend_properties {
 	    u8			interleaving;
 	} layer[3];
 
-	/* ISDB-T specifics */
-	u32			isdbs_ts_id;
-
-	/* DVB-T2 specifics */
-	u32                     dvbt2_plp_id;
+	/* Multistream specifics */
+	u32			stream_id;
 
 	/* ATSC-MH specifics */
 	u8			atscmh_fic_ver;
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index ea86a56..13caec0 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3425,6 +3425,33 @@ err:
 	return -1;
 }
 
+static int stv090x_set_mis(struct stv090x_state *state, int mis)
+{
+	u32 reg;
+
+	if (mis < 0 || mis > 255) {
+		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+	} else {
+		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
+			goto err;
+	}
+	return 0;
+err:
+	dprintk(FE_ERROR, 1, "I/O error");
+	return -1;
+}
+
 static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state, props->stream_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 		}
 	}
 
+	if (state->internal->dev_ver >= 0x30)
+		state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 	/* workaround for stuck DiSEqC output */
 	if (config->diseqc_envelope_mode)
 		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);

Re: [PATCH] DVB-S2 multistream support

[Antti Palosaari]

On 08/12/2012 09:33 PM, CrazyCat wrote:
> Ok, done :) Look like DTV_DVBT2_PLP_ID not implemented for CXD2820r ?

yes, true. It uses always PLP 0. I didn't have signal source that uses 
multiple PLPs. I didn't even add that PLP ID to API.

> 12.08.2012, 03:00, "Antti Palosaari" <crope@iki.fi>:
>> We asked you to merge isdbs_ts_id, dvbt2_plp_id and dvbs2_mis_id to one
>> as those are logically same thing from the user-point of view.
>> Technically those differs, but that is userspace API so underlying
>> technique should not matter.
>>
>> It is some more work for you, but it should not be such big issue you
>> cannot do. So please use few hours and merge all those. I think correct
>> name is DTV_STREAM_ID. So remove isdbs_ts_id, dvbt2_plp_id and
>> dvbs2_mis_id. Add new variable stream_id. As DTV_ISDBS_TS_ID and
>> DTV_DVBT2_PLP_ID already exists you should make some logic those could
>> be still used.
>
> Signed-off-by: Evgeny Plehov <EvgenyPlehov@ukr.net>
> diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
> index f50d405..32d51bc 100644
> --- a/include/linux/dvb/frontend.h
> +++ b/include/linux/dvb/frontend.h
> @@ -62,6 +62,7 @@ typedef enum fe_caps {
>   	FE_CAN_8VSB			= 0x200000,
>   	FE_CAN_16VSB			= 0x400000,
>   	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
> +	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
>   	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
>   	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
>   	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
> @@ -314,9 +315,10 @@ struct dvb_frontend_event {
>
>   #define DTV_ISDBT_LAYER_ENABLED	41
>
> -#define DTV_ISDBS_TS_ID		42
> -
> -#define DTV_DVBT2_PLP_ID	43
> +#define DTV_STREAM_ID		42
> +#define DTV_ISDBS_TS_ID		DTV_STREAM_ID
> +#define DTV_DVBT2_PLP_ID	DTV_STREAM_ID
> +#define DTV_DVBS2_MIS_ID	DTV_STREAM_ID

Do not define command DTV_DVBS2_MIS_ID at all. It is not never released 
thus no need to support.

I suspect DTV_DVBT2_PLP_ID is never used by any application, but still 
it is not possible to change command number from 43 to 42 as this does.

I am not sure what kind of procedures are needed to remove existing API 
command number, but surely it is not possible like that. So you have to 
reserve command 43. Both commands 42 and 43 should continue working.

DTV_DVBT2_PLP_ID should be marked as deprecated and after that it could 
be removed somewhere in future.

>
>   #define DTV_ENUM_DELSYS		44
>
> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
> index aebcdf2..8fb7eac 100644
> --- a/drivers/media/dvb/dvb-core/dvb_frontend.c
> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
> @@ -946,8 +946,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
>   		c->layer[i].segment_count = 0;
>   	}
>
> -	c->isdbs_ts_id = 0;
> -	c->dvbt2_plp_id = 0;
> +	c->stream_id = -1;

You have defined it as a unsigned 32 thus -1 is not possible value. 
Maybe 0 is still good default choice.

>   	switch (c->delivery_system) {
>   	case SYS_DVBS:
> @@ -1017,8 +1016,7 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
>   	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
>   	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
>
> -	_DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
> -	_DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),

DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it 
is renamed, it is OK).

> +	_DTV_CMD(DTV_STREAM_ID, 1, 0),
>
>   	/* Get */
>   	_DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
> @@ -1382,11 +1380,9 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
>   	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
>   		tvp->u.data = c->layer[2].interleaving;
>   		break;
> -	case DTV_ISDBS_TS_ID:
> -		tvp->u.data = c->isdbs_ts_id;
> -		break;
> -	case DTV_DVBT2_PLP_ID:
> -		tvp->u.data = c->dvbt2_plp_id;

DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it 
is renamed, it is OK).

> +
> +	case DTV_STREAM_ID:
> +		tvp->u.data = c->stream_id;
>   		break;
>
>   	/* ATSC-MH */
> @@ -1771,11 +1767,8 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
>   	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
>   		c->layer[2].interleaving = tvp->u.data;
>   		break;
> -	case DTV_ISDBS_TS_ID:
> -		c->isdbs_ts_id = tvp->u.data;
> -		break;
> -	case DTV_DVBT2_PLP_ID:
> -		c->dvbt2_plp_id = tvp->u.data;

DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it 
is renamed, it is OK).

> +	case DTV_STREAM_ID:
> +		c->stream_id = tvp->u.data;
>   		break;
>
>   	/* ATSC-MH */
> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
> index 7c64c09..bec0cda 100644
> --- a/drivers/media/dvb/dvb-core/dvb_frontend.h
> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
> @@ -368,11 +368,8 @@ struct dtv_frontend_properties {
>   	    u8			interleaving;
>   	} layer[3];
>
> -	/* ISDB-T specifics */
> -	u32			isdbs_ts_id;
> -
> -	/* DVB-T2 specifics */
> -	u32                     dvbt2_plp_id;
> +	/* Multistream specifics */
> +	u32			stream_id;

These are correct!

>
>   	/* ATSC-MH specifics */
>   	u8			atscmh_fic_ver;
> diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
> index ea86a56..13caec0 100644
> --- a/drivers/media/dvb/frontends/stv090x.c
> +++ b/drivers/media/dvb/frontends/stv090x.c
> @@ -3425,6 +3425,33 @@ err:
>   	return -1;
>   }
>
> +static int stv090x_set_mis(struct stv090x_state *state, int mis)
> +{
> +	u32 reg;
> +
> +	if (mis < 0 || mis > 255) {
> +		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +	} else {
> +		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
> +		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
> +		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
> +		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
> +			goto err;
> +		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
> +			goto err;
> +	}
> +	return 0;
> +err:
> +	dprintk(FE_ERROR, 1, "I/O error");
> +	return -1;
> +}
> +
>   static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>   {
>   	struct stv090x_state *state = fe->demodulator_priv;
> @@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>   		state->search_range = 5000000;
>   	}
>
> +	stv090x_set_mis(state, props->stream_id);
> +
>   	if (stv090x_algo(state) == STV090x_RANGEOK) {
>   		dprintk(FE_DEBUG, 1, "Search success!");
>   		return DVBFE_ALGO_SEARCH_SUCCESS;
> @@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
>   		}
>   	}
>
> +	if (state->internal->dev_ver >= 0x30)
> +		state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
> +
>   	/* workaround for stuck DiSEqC output */
>   	if (config->diseqc_envelope_mode)
>   		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);
>

Only functional problem is here that it removes DTV_DVBT2_PLP_ID command 
43 from the API whilst there could be some applications using that. It 
should be deprecated (marked as do not use or like that) and then 
removed in future.

regards
Antti


-- 
http://palosaari.fi/

Re: [PATCH] DVB-S2 multistream support

[Manu Abraham]

On Mon, Aug 13, 2012 at 12:20 AM, Antti Palosaari <crope@iki.fi> wrote:
> On 08/12/2012 09:33 PM, CrazyCat wrote:
>>
>> Ok, done :) Look like DTV_DVBT2_PLP_ID not implemented for CXD2820r ?
>
>
> yes, true. It uses always PLP 0. I didn't have signal source that uses
> multiple PLPs. I didn't even add that PLP ID to API.

CXD2820 works only with PLP Type 1 or Type A in some other terminology.
PLP Type Common and PLP Type 2 are not supported by the hardware.
ie, it fails to acquire a LOCK with anything else.

Issue confirmed by Sony as well.

Regards,
Manu

Re: [PATCH] DVB-S2 multistream support

[Mauro Carvalho Chehab]

Em 12-08-2012 15:50, Antti Palosaari escreveu:
> On 08/12/2012 09:33 PM, CrazyCat wrote:

>> diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
>> index f50d405..32d51bc 100644
>> --- a/include/linux/dvb/frontend.h
>> +++ b/include/linux/dvb/frontend.h
>> @@ -62,6 +62,7 @@ typedef enum fe_caps {
>>       FE_CAN_8VSB            = 0x200000,
>>       FE_CAN_16VSB            = 0x400000,
>>       FE_HAS_EXTENDED_CAPS        = 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
>> +    FE_CAN_MULTISTREAM        = 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
>>       FE_CAN_TURBO_FEC        = 0x8000000,  /* frontend supports "turbo fec modulation" */
>>       FE_CAN_2G_MODULATION        = 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
>>       FE_NEEDS_BENDING        = 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
>> @@ -314,9 +315,10 @@ struct dvb_frontend_event {
>>
>>   #define DTV_ISDBT_LAYER_ENABLED    41
>>
>> -#define DTV_ISDBS_TS_ID        42
>> -
>> -#define DTV_DVBT2_PLP_ID    43
>> +#define DTV_STREAM_ID        42
>> +#define DTV_ISDBS_TS_ID        DTV_STREAM_ID
>> +#define DTV_DVBT2_PLP_ID    DTV_STREAM_ID
>> +#define DTV_DVBS2_MIS_ID    DTV_STREAM_ID
> 
> Do not define command DTV_DVBS2_MIS_ID at all. It is not never released thus no need to support.

I'd say we need compatibility bits only for the ID's that are already there (ISDBS_TS_ID and DTV_DVBT2_PLP_ID).

> 
> I suspect DTV_DVBT2_PLP_ID is never used by any application, but still it is not possible to change command number from 43 to 42 as this does.
> 
> I am not sure what kind of procedures are needed to remove existing API command number, but surely it is not possible like that. So you have to reserve command 43. Both commands 42 and 43 should continue working.

Rename the one that will be obsoleted with _LEGACY:
	#define DTV_DVBT2_PLP_ID_LEGACY    43

and keep accepting it inside the dvb_frontend, like: 

	switch (...) {
	case DTV_DVBT2_PLP_ID_LEGACY:
	case DTV_STREAM_ID:
		...
	}
	
This way, app developers will notice that this got removed and binary code will keep working.

> 
> DTV_DVBT2_PLP_ID should be marked as deprecated and after that it could be removed somewhere in future.
> 
>>
>>   #define DTV_ENUM_DELSYS        44
>>
>> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
>> index aebcdf2..8fb7eac 100644
>> --- a/drivers/media/dvb/dvb-core/dvb_frontend.c
>> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
>> @@ -946,8 +946,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
>>           c->layer[i].segment_count = 0;
>>       }
>>
>> -    c->isdbs_ts_id = 0;
>> -    c->dvbt2_plp_id = 0;
>> +    c->stream_id = -1;
> 
> You have defined it as a unsigned 32 thus -1 is not possible value. Maybe 0 is still good default choice.
> 
>>       switch (c->delivery_system) {
>>       case SYS_DVBS:
>> @@ -1017,8 +1016,7 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
>>       _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
>>       _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
>>
>> -    _DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
>> -    _DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
> 
> DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it is renamed, it is OK).
> 
>> +    _DTV_CMD(DTV_STREAM_ID, 1, 0),
>>
>>       /* Get */
>>       _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
>> @@ -1382,11 +1380,9 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
>>       case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
>>           tvp->u.data = c->layer[2].interleaving;
>>           break;
>> -    case DTV_ISDBS_TS_ID:
>> -        tvp->u.data = c->isdbs_ts_id;
>> -        break;
>> -    case DTV_DVBT2_PLP_ID:
>> -        tvp->u.data = c->dvbt2_plp_id;
> 
> DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it is renamed, it is OK).
> 
>> +
>> +    case DTV_STREAM_ID:
>> +        tvp->u.data = c->stream_id;
>>           break;
>>
>>       /* ATSC-MH */
>> @@ -1771,11 +1767,8 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
>>       case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
>>           c->layer[2].interleaving = tvp->u.data;
>>           break;
>> -    case DTV_ISDBS_TS_ID:
>> -        c->isdbs_ts_id = tvp->u.data;
>> -        break;
>> -    case DTV_DVBT2_PLP_ID:
>> -        c->dvbt2_plp_id = tvp->u.data;
> 
> DTV_DVBT2_PLP_ID cannot be removed yet (but DTV_ISDBS_TS_ID can be as it is renamed, it is OK).
> 
>> +    case DTV_STREAM_ID:
>> +        c->stream_id = tvp->u.data;
>>           break;
>>
>>       /* ATSC-MH */
>> diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
>> index 7c64c09..bec0cda 100644
>> --- a/drivers/media/dvb/dvb-core/dvb_frontend.h
>> +++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
>> @@ -368,11 +368,8 @@ struct dtv_frontend_properties {
>>           u8            interleaving;
>>       } layer[3];
>>
>> -    /* ISDB-T specifics */
>> -    u32            isdbs_ts_id;
>> -
>> -    /* DVB-T2 specifics */
>> -    u32                     dvbt2_plp_id;
>> +    /* Multistream specifics */
>> +    u32            stream_id;
> 
> These are correct!
> 
>>
>>       /* ATSC-MH specifics */
>>       u8            atscmh_fic_ver;
>> diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
>> index ea86a56..13caec0 100644
>> --- a/drivers/media/dvb/frontends/stv090x.c
>> +++ b/drivers/media/dvb/frontends/stv090x.c

I prefer if you could split the DVB API changes from the driver changes.

Also, you'll need to patch Documentation/DocBook, in order to reflect those
API changes. 

Regards,
Mauro

>> @@ -3425,6 +3425,33 @@ err:
>>       return -1;
>>   }
>>
>> +static int stv090x_set_mis(struct stv090x_state *state, int mis)
>> +{
>> +    u32 reg;
>> +
>> +    if (mis < 0 || mis > 255) {
>> +        dprintk(FE_DEBUG, 1, "Disable MIS filtering");
>> +        reg = STV090x_READ_DEMOD(state, PDELCTRL1);
>> +        STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
>> +        if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
>> +            goto err;
>> +    } else {
>> +        dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
>> +        reg = STV090x_READ_DEMOD(state, PDELCTRL1);
>> +        STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
>> +        if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
>> +            goto err;
>> +        if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
>> +            goto err;
>> +        if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
>> +            goto err;
>> +    }
>> +    return 0;
>> +err:
>> +    dprintk(FE_ERROR, 1, "I/O error");
>> +    return -1;
>> +}
>> +
>>   static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>>   {
>>       struct stv090x_state *state = fe->demodulator_priv;
>> @@ -3447,6 +3474,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
>>           state->search_range = 5000000;
>>       }
>>
>> +    stv090x_set_mis(state, props->stream_id);
>> +
>>       if (stv090x_algo(state) == STV090x_RANGEOK) {
>>           dprintk(FE_DEBUG, 1, "Search success!");
>>           return DVBFE_ALGO_SEARCH_SUCCESS;
>> @@ -4798,6 +4827,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
>>           }
>>       }
>>
>> +    if (state->internal->dev_ver >= 0x30)
>> +        state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
>> +
>>       /* workaround for stuck DiSEqC output */
>>       if (config->diseqc_envelope_mode)
>>           stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);
>>
> 
> Only functional problem is here that it removes DTV_DVBT2_PLP_ID command 43 from the API whilst there could be some applications using that. It should be deprecated (marked as do not use or like that) and then removed in future.
> 
> regards
> Antti
> 
> 

[PATCH]DVB-S2 multistream support

[CrazyCat]

Now present DTV_DVBT2_PLP_ID property for DVB-T2, so i add alias DTV_DVBS2_MIS_ID (same feature for advanced DVB-S2). Now DVB-S2 multistream filtration supported for current STV090x demod cut 3.0, so i implement support for stv090x demod driver. Additional fe-caps FE_CAN_MULTISTREAM also added.

diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index f50d405..f625f8d 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -62,6 +62,7 @@ typedef enum fe_caps {
 	FE_CAN_8VSB			= 0x200000,
 	FE_CAN_16VSB			= 0x400000,
 	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
+	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports DVB-S2 multistream filtering */
 	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
 	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
 	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
@@ -317,6 +318,7 @@ struct dvb_frontend_event {
 #define DTV_ISDBS_TS_ID		42
 
 #define DTV_DVBT2_PLP_ID	43
+#define DTV_DVBS2_MIS_ID	43
 
 #define DTV_ENUM_DELSYS		44
 
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index aebcdf2..83e51f9 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -947,7 +947,7 @@ static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
 	}
 
 	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
+	c->dvbt2_plp_id = -1;
 
 	switch (c->delivery_system) {
 	case SYS_DVBS:
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index ea86a56..eb6f1cf 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3425,6 +3425,33 @@ err:
 	return -1;
 }
 
+static int stv090x_set_mis(struct stv090x_state *state, int mis)
+{
+	u32 reg;
+
+	if (mis<0 || mis>255) {
+		dprintk(FE_DEBUG, 1, "Disable MIS filtering");
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x00);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+	} else {
+		dprintk(FE_DEBUG, 1, "Enable MIS filtering - %d", mis);
+		reg = STV090x_READ_DEMOD(state, PDELCTRL1);
+		STV090x_SETFIELD_Px(reg, FILTER_EN_FIELD, 0x01);
+		if (STV090x_WRITE_DEMOD(state, PDELCTRL1, reg) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIENTRY, mis) < 0)
+			goto err;
+		if (STV090x_WRITE_DEMOD(state, ISIBITENA, 0xff) < 0)
+			goto err;
+	}
+	return 0;
+err:
+	dprintk(FE_ERROR, 1, "I/O error");
+	return -1;
+}
+
 static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3433,6 +3460,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 	if (props->frequency == 0)
 		return DVBFE_ALGO_SEARCH_INVALID;
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	state->delsys = props->delivery_system;
 	state->frequency = props->frequency;
 	state->srate = props->symbol_rate;
@@ -3447,6 +3476,8 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
 		state->search_range = 5000000;
 	}
 
+	stv090x_set_mis(state,props->dvbt2_plp_id);
+
 	if (stv090x_algo(state) == STV090x_RANGEOK) {
 		dprintk(FE_DEBUG, 1, "Search success!");
 		return DVBFE_ALGO_SEARCH_SUCCESS;
@@ -4798,6 +4829,9 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 		}
 	}
 
+	if (state->internal->dev_ver>=0x30)
+	    state->frontend.ops.info.caps |= FE_CAN_MULTISTREAM;
+
 	/* workaround for stuck DiSEqC output */
 	if (config->diseqc_envelope_mode)
 		stv090x_send_diseqc_burst(&state->frontend, SEC_MINI_A);