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V4L/DVB (12892): DVB-API: add support for ISDB-T and ISDB-Tsb (versio…
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…n 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: Olivier Grenie <olgrenie@dibcom.fr>
Signed-off-by: Patrick Boettcher <pboettcher@dibcom.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Patrick Boettcher authored and Mauro Carvalho Chehab committed Sep 19, 2009
1 parent fc27f04 commit b6e760f
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Showing 4 changed files with 247 additions and 15 deletions.
202 changes: 197 additions & 5 deletions drivers/media/dvb/dvb-core/dvb_frontend.c
View file
Expand Up @@ -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",
Expand Down Expand Up @@ -949,13 +992,51 @@ 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",
.cmd = DTV_DISEQC_SLAVE_REPLY,
.set = 0,
.buffer = 1,
},

[DTV_API_VERSION] = {
.name = "DTV_API_VERSION",
.cmd = DTV_API_VERSION,
Expand Down Expand Up @@ -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;
}
}

Expand Down Expand Up @@ -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;
}
Expand Down Expand Up @@ -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
Expand Down Expand Up @@ -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;
}
Expand Down
14 changes: 14 additions & 0 deletions drivers/media/dvb/dvb-core/dvb_frontend.h
View file
Expand Up @@ -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 {
Expand Down
44 changes: 35 additions & 9 deletions include/linux/dvb/frontend.h
View file
Expand Up @@ -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 {
Expand Down Expand Up @@ -268,15 +269,40 @@ struct dvb_frontend_event {
#define DTV_FE_CAPABILITY 16
#define DTV_DELIVERY_SYSTEM 17

#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
/* ISDB-T and ISDB-Tsb */
#define DTV_ISDBT_PARTIAL_RECEPTION 18
#define DTV_ISDBT_SOUND_BROADCASTING 19

#define DTV_MAX_COMMAND DTV_HIERARCHY
#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_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_ISDBT_LAYER_ENABLED 41

#define DTV_MAX_COMMAND DTV_ISDBT_LAYER_ENABLED

typedef enum fe_pilot {
PILOT_ON,
Expand Down
2 changes: 1 addition & 1 deletion include/linux/dvb/version.h
View file
Expand Up @@ -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_*/

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