[media] cxd2841er: Fix signal strengh for DVB-T/T2 and show it in dBm

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The signal strength value is reversed: the bigger the number,
the weaker is the signal.

Fix the logic and present it in dBm. Please notice that the
dBm measure is actually an estimation, as the ratio is not
fully linear. It also varies with the frequency.

Yet, the estimation should be good enough for programs like
Kaffeine to indicate when the signal is good or bad.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

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This commit is contained in:

Mauro Carvalho Chehab 2016-06-30 19:41:45 -03:00

parent d0e20e13b7

commit 5fda1b65c2

1 changed files with 18 additions and 13 deletions

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drivers/media/dvb-frontends/cxd2841er.c

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