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Commit b6e760f3 authored by Patrick Boettcher's avatar Patrick Boettcher Committed by Mauro Carvalho Chehab
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V4L/DVB (12892): DVB-API: add support for ISDB-T and ISDB-Tsb (version 5.1) 



This patch increments the DVB-API to version 5.1 in order to reflect the addition of ISDB-T and ISDB-Tsb on Linux' DVB-API.

Changes in detail:
- added a small document to describe how to use the API to tune to an ISDB-T or ISDB-Tsb channel
- added necessary fields to dtv_frontend_cache
- added a smarter clear-cache function which resets all fields of the dtv_frontend_cache
- added a TRANSMISSION_MODE_4K to fe_transmit_mode_t

Signed-off-by: default avatarOlivier Grenie <olgrenie@dibcom.fr>
Signed-off-by: default avatarPatrick Boettcher <pboettcher@dibcom.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent fc27f046

drivers/media/dvb/dvb-core/dvb_frontend.c

+197 −5
Original line number Diff line number Diff line
@@ -850,6 +850,49 @@ static int dvb_frontend_check_parameters(struct dvb_frontend *fe, 
	return 0;

}



static int dvb_frontend_clear_cache(struct dvb_frontend *fe)

{

	int i;



	memset(&(fe->dtv_property_cache), 0,

			sizeof(struct dtv_frontend_properties));



	fe->dtv_property_cache.state = DTV_CLEAR;

	fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;

	fe->dtv_property_cache.inversion = INVERSION_AUTO;

	fe->dtv_property_cache.fec_inner = FEC_AUTO;

	fe->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_AUTO;

	fe->dtv_property_cache.bandwidth_hz = BANDWIDTH_AUTO;

	fe->dtv_property_cache.guard_interval = GUARD_INTERVAL_AUTO;

	fe->dtv_property_cache.hierarchy = HIERARCHY_AUTO;

	fe->dtv_property_cache.symbol_rate = QAM_AUTO;

	fe->dtv_property_cache.code_rate_HP = FEC_AUTO;

	fe->dtv_property_cache.code_rate_LP = FEC_AUTO;



	fe->dtv_property_cache.isdbt_partial_reception = -1;

	fe->dtv_property_cache.isdbt_sb_mode = -1;

	fe->dtv_property_cache.isdbt_sb_subchannel = -1;

	fe->dtv_property_cache.isdbt_sb_segment_idx = -1;

	fe->dtv_property_cache.isdbt_sb_segment_count = -1;

	fe->dtv_property_cache.isdbt_layer_enabled = 0x7;

	for (i = 0; i < 3; i++) {

		fe->dtv_property_cache.layer[i].fec = FEC_AUTO;

		fe->dtv_property_cache.layer[i].modulation = QAM_AUTO;

		fe->dtv_property_cache.layer[i].interleaving = -1;

		fe->dtv_property_cache.layer[i].segment_count = -1;

	}



	return 0;

}



#define _DTV_CMD(n, s, b) \

[n] = { \

	.name = #n, \

	.cmd  = n, \

	.set  = s,\

	.buffer = b \

}



static struct dtv_cmds_h dtv_cmds[] = {

	[DTV_TUNE] = {

		.name	= "DTV_TUNE",
@@ -949,6 +992,43 @@ static struct dtv_cmds_h dtv_cmds[] = { 
		.cmd	= DTV_TRANSMISSION_MODE,

		.set	= 1,

	},



	_DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),

	_DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),

	_DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),

	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),

	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),



	_DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 0, 0),

	_DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 0, 0),

	_DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 0, 0),

	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 0, 0),

	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_FEC, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_FEC, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_FEC, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 0, 0),

	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 0, 0),



	/* Get */

	[DTV_DISEQC_SLAVE_REPLY] = {

		.name	= "DTV_DISEQC_SLAVE_REPLY",
@@ -956,6 +1036,7 @@ static struct dtv_cmds_h dtv_cmds[] = { 
		.set	= 0,

		.buffer	= 1,

	},



	[DTV_API_VERSION] = {

		.name	= "DTV_API_VERSION",

		.cmd	= DTV_API_VERSION,
@@ -1165,14 +1246,21 @@ static void dtv_property_adv_params_sync(struct dvb_frontend *fe) 
	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->inversion = c->inversion;

		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;

		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;

	}

}
@@ -1274,6 +1362,59 @@ static int dtv_property_process_get(struct dvb_frontend *fe, 
	case DTV_HIERARCHY:

		tvp->u.data = fe->dtv_property_cache.hierarchy;

		break;



	/* ISDB-T Support here */

	case DTV_ISDBT_PARTIAL_RECEPTION:

		tvp->u.data = fe->dtv_property_cache.isdbt_partial_reception;

		break;

	case DTV_ISDBT_SOUND_BROADCASTING:

		tvp->u.data = fe->dtv_property_cache.isdbt_sb_mode;

		break;

	case DTV_ISDBT_SB_SUBCHANNEL_ID:

		tvp->u.data = fe->dtv_property_cache.isdbt_sb_subchannel;

		break;

	case DTV_ISDBT_SB_SEGMENT_IDX:

		tvp->u.data = fe->dtv_property_cache.isdbt_sb_segment_idx;

		break;

	case DTV_ISDBT_SB_SEGMENT_COUNT:

		tvp->u.data = fe->dtv_property_cache.isdbt_sb_segment_count;

		break;

	case DTV_ISDBT_LAYERA_FEC:

		tvp->u.data = fe->dtv_property_cache.layer[0].fec;

		break;

	case DTV_ISDBT_LAYERA_MODULATION:

		tvp->u.data = fe->dtv_property_cache.layer[0].modulation;

		break;

	case DTV_ISDBT_LAYERA_SEGMENT_COUNT:

		tvp->u.data = fe->dtv_property_cache.layer[0].segment_count;

		break;

	case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:

		tvp->u.data = fe->dtv_property_cache.layer[0].interleaving;

		break;

	case DTV_ISDBT_LAYERB_FEC:

		tvp->u.data = fe->dtv_property_cache.layer[1].fec;

		break;

	case DTV_ISDBT_LAYERB_MODULATION:

		tvp->u.data = fe->dtv_property_cache.layer[1].modulation;

		break;

	case DTV_ISDBT_LAYERB_SEGMENT_COUNT:

		tvp->u.data = fe->dtv_property_cache.layer[1].segment_count;

		break;

	case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:

		tvp->u.data = fe->dtv_property_cache.layer[1].interleaving;

		break;

	case DTV_ISDBT_LAYERC_FEC:

		tvp->u.data = fe->dtv_property_cache.layer[2].fec;

		break;

	case DTV_ISDBT_LAYERC_MODULATION:

		tvp->u.data = fe->dtv_property_cache.layer[2].modulation;

		break;

	case DTV_ISDBT_LAYERC_SEGMENT_COUNT:

		tvp->u.data = fe->dtv_property_cache.layer[2].segment_count;

		break;

	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:

		tvp->u.data = fe->dtv_property_cache.layer[2].interleaving;

		break;

	default:

		r = -1;

	}
@@ -1302,10 +1443,8 @@ static int dtv_property_process_set(struct dvb_frontend *fe, 
		/* 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__);

		memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));

		fe->dtv_property_cache.state = tvp->cmd;

		fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;

		break;

	case DTV_TUNE:

		/* interpret the cache of data, build either a traditional frontend
@@ -1371,6 +1510,59 @@ static int dtv_property_process_set(struct dvb_frontend *fe, 
	case DTV_HIERARCHY:

		fe->dtv_property_cache.hierarchy = tvp->u.data;

		break;



	/* ISDB-T Support here */

	case DTV_ISDBT_PARTIAL_RECEPTION:

		fe->dtv_property_cache.isdbt_partial_reception = tvp->u.data;

		break;

	case DTV_ISDBT_SOUND_BROADCASTING:

		fe->dtv_property_cache.isdbt_sb_mode = tvp->u.data;

		break;

	case DTV_ISDBT_SB_SUBCHANNEL_ID:

		fe->dtv_property_cache.isdbt_sb_subchannel = tvp->u.data;

		break;

	case DTV_ISDBT_SB_SEGMENT_IDX:

		fe->dtv_property_cache.isdbt_sb_segment_idx = tvp->u.data;

		break;

	case DTV_ISDBT_SB_SEGMENT_COUNT:

		fe->dtv_property_cache.isdbt_sb_segment_count = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERA_FEC:

		fe->dtv_property_cache.layer[0].fec = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERA_MODULATION:

		fe->dtv_property_cache.layer[0].modulation = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERA_SEGMENT_COUNT:

		fe->dtv_property_cache.layer[0].segment_count = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:

		fe->dtv_property_cache.layer[0].interleaving = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERB_FEC:

		fe->dtv_property_cache.layer[1].fec = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERB_MODULATION:

		fe->dtv_property_cache.layer[1].modulation = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERB_SEGMENT_COUNT:

		fe->dtv_property_cache.layer[1].segment_count = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:

		fe->dtv_property_cache.layer[1].interleaving = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERC_FEC:

		fe->dtv_property_cache.layer[2].fec = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERC_MODULATION:

		fe->dtv_property_cache.layer[2].modulation = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERC_SEGMENT_COUNT:

		fe->dtv_property_cache.layer[2].segment_count = tvp->u.data;

		break;

	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:

		fe->dtv_property_cache.layer[2].interleaving = tvp->u.data;

		break;

	default:

		r = -1;

	}

drivers/media/dvb/dvb-core/dvb_frontend.h

+14 −0
Original line number Diff line number Diff line
@@ -341,6 +341,20 @@ struct dtv_frontend_properties { 
	fe_rolloff_t		rolloff;



	fe_delivery_system_t	delivery_system;



	/* ISDB-T specifics */

	u8			isdbt_partial_reception;

	u8			isdbt_sb_mode;

	u8			isdbt_sb_subchannel;

	u32			isdbt_sb_segment_idx;

	u32			isdbt_sb_segment_count;

	u8			isdbt_layer_enabled;

	struct {

	    u8			segment_count;

	    fe_code_rate_t	fec;

	    fe_modulation_t	modulation;

	    u8			interleaving;

	} layer[3];

};



struct dvb_frontend {

include/linux/dvb/frontend.h

+35 −9
Original line number Diff line number Diff line
@@ -173,7 +173,8 @@ typedef enum fe_modulation { 
typedef enum fe_transmit_mode {

	TRANSMISSION_MODE_2K,

	TRANSMISSION_MODE_8K,

	TRANSMISSION_MODE_AUTO

	TRANSMISSION_MODE_AUTO,

	TRANSMISSION_MODE_4K

} fe_transmit_mode_t;



typedef enum fe_bandwidth {
@@ -268,15 +269,40 @@ struct dvb_frontend_event { 
#define DTV_FE_CAPABILITY	16

#define DTV_DELIVERY_SYSTEM	17



/* ISDB-T and ISDB-Tsb */

#define DTV_ISDBT_PARTIAL_RECEPTION	18

#define DTV_ISDBT_SOUND_BROADCASTING	19



#define DTV_ISDBT_SB_SUBCHANNEL_ID	20

#define DTV_ISDBT_SB_SEGMENT_IDX	21

#define DTV_ISDBT_SB_SEGMENT_COUNT	22



#define DTV_ISDBT_LAYERA_FEC			23

#define DTV_ISDBT_LAYERA_MODULATION		24

#define DTV_ISDBT_LAYERA_SEGMENT_COUNT		25

#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING	26



#define DTV_ISDBT_LAYERB_FEC			27

#define DTV_ISDBT_LAYERB_MODULATION		28

#define DTV_ISDBT_LAYERB_SEGMENT_COUNT		29

#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING	30



#define DTV_ISDBT_LAYERC_FEC			31

#define DTV_ISDBT_LAYERC_MODULATION		32

#define DTV_ISDBT_LAYERC_SEGMENT_COUNT		33

#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING	34



#define DTV_API_VERSION		35

#define DTV_API_VERSION				35



#define DTV_CODE_RATE_HP	36

#define DTV_CODE_RATE_LP	37

#define DTV_GUARD_INTERVAL	38

#define DTV_TRANSMISSION_MODE	39

#define DTV_HIERARCHY		40



#define DTV_MAX_COMMAND				DTV_HIERARCHY

#define DTV_ISDBT_LAYER_ENABLED	41



#define DTV_MAX_COMMAND				DTV_ISDBT_LAYER_ENABLED



typedef enum fe_pilot {

	PILOT_ON,

include/linux/dvb/version.h

+1 −1
Original line number Diff line number Diff line
@@ -24,6 +24,6 @@ 
#define _DVBVERSION_H_



#define DVB_API_VERSION 5

#define DVB_API_VERSION_MINOR 0

#define DVB_API_VERSION_MINOR 1



#endif /*_DVBVERSION_H_*/