diff options
author | Steven Toth <stoth@linuxtv.org> | 2008-09-04 01:12:25 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:37:03 -0200 |
commit | 6b73eeafbc856c0cef7166242f0e55403407f355 (patch) | |
tree | d385a9c8c8eb0682c2690ca0b2352bea96349f52 /drivers/media/dvb/dvb-core/dvb_frontend.h | |
parent | 05c1cab55c282199b85138dc1900b5d9bd6fb32a (diff) |
V4L/DVB (8985): S2API: Added dvb frontend changes to support a newer tuning API
This is an experimental patch to add a new tuning mechanism for
dvb frontends. Rather than passing fixed structures across the
user/kernel boundary, which need to be revised for each new modulation
type (or feature the kernel developers want to add), this implements
a simpler message based approach, allowing fe commands to be broken
down into a series of small fixed size transactions, presented
in an array.
The goal is to avoid changing the user/kernel ABI in the future, by
simply creating new frontend commands (and sequencies of commands) that
help us add support for brand new demodulator, delivery system or
statistics related commmands.
known issues:
checkpatch voilations
feedback from various developers yet to be implemented, relating
to namespace conventions, variable length array passing conventions,
and generally some optimization.
This patch should support all existing tuning mechanisms through the
new API, as well as adding 8PSK, DVB-S2 NBC-QPSK and ISDB-T API support.
For testing and exercise purposes, see the latest tune.c tool
available from http://www.steventoth.net/linux/s2
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_frontend.h')
-rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h index aa4133f0bd1..61d53ee70f2 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.h +++ b/drivers/media/dvb/dvb-core/dvb_frontend.h @@ -169,6 +169,10 @@ struct dvb_frontend_ops { struct dvb_tuner_ops tuner_ops; struct analog_demod_ops analog_ops; + + int (*set_property)(struct dvb_frontend* fe, tv_property_t* tvp); + int (*get_property)(struct dvb_frontend* fe, tv_property_t* tvp); + int (*set_params)(struct dvb_frontend* fe); }; #define MAX_EVENT 8 @@ -182,6 +186,45 @@ struct dvb_fe_events { struct mutex mtx; }; +struct tv_frontend_properties { + + /* Cache State */ + u32 state; + + u32 frequency; + fe_modulation_t modulation; + + fe_sec_voltage_t voltage; + fe_sec_tone_mode_t sectone; + fe_spectral_inversion_t inversion; + fe_code_rate_t fec_inner; + fe_transmit_mode_t transmission_mode; + fe_bandwidth_t bandwidth; + fe_guard_interval_t guard_interval; + fe_hierarchy_t hierarchy; + u32 symbol_rate; + fe_code_rate_t code_rate_HP; + fe_code_rate_t code_rate_LP; + + fe_pilot_t pilot; + fe_rolloff_t rolloff; + + fe_delivery_system_t delivery_system; + + /* ISDB-T specifics */ + u32 isdb_segment_num; + u32 isdb_segment_width; + fe_code_rate_t isdb_layera_fec; + fe_modulation_t isdb_layera_modulation; + u32 isdb_layera_segment_width; + fe_code_rate_t isdb_layerb_fec; + fe_modulation_t isdb_layerb_modulation; + u32 isdb_layerb_segment_width; + fe_code_rate_t isdb_layerc_fec; + fe_modulation_t isdb_layerc_modulation; + u32 isdb_layerc_segment_width; +}; + struct dvb_frontend { struct dvb_frontend_ops ops; struct dvb_adapter *dvb; @@ -190,6 +233,7 @@ struct dvb_frontend { void *frontend_priv; void *sec_priv; void *analog_demod_priv; + struct tv_frontend_properties tv_property_cache; }; extern int dvb_register_frontend(struct dvb_adapter *dvb, |