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V4L/DVB (6136): dvb_frontend: add get_rf_strength function pointer to dvb_tuner_ops

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Add get_rf_strength function pointer to dvb_tuner_ops, so that rf signal
strength can be read directly from the tuner driver by the dvb demodulator
driver and / or the analog tuning system.

This is an internal api addition -- userspace is not affected.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Acked-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2007-08-30 23:00:43 -03:00 committed by Mauro Carvalho Chehab
parent ca805d57cf
commit 8fb3b9f7a9
1 changed files with 1 additions and 0 deletions
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drivers/media/dvb/dvb-core/dvb_frontend.h
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@ -90,6 +90,7 @@ struct dvb_tuner_ops {
#define TUNER_STATUS_LOCKED 1
#define TUNER_STATUS_STEREO 2
int (*get_status)(struct dvb_frontend *fe, u32 *status);
int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
/** These are provided seperately from set_params in order to facilitate silicon
* tuners which require sophisticated tuning loops, controlling each parameter seperately. */