media: si2157: add on-demand rf strength func

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Add get_rf_strength callback to get RSSI from the tuner. DVBv5
stat cache is updated. get_rf_strength is called by tuner_core
for analog tuners and is also used by some bridge drivers to
obtain RSSI directly from the tuner.

Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

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Brad Love 2019-11-14 21:04:06 +01:00 • committed by Mauro Carvalho Chehab

parent 3c1ccbad80

commit d99846cb1c

1 changed files with 39 additions and 1 deletions

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drivers/media/tuners/si2157.c

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