[RFC] add DVBv5 statistics support to mn88473

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This patch tries to add DVBv5 statistics support to the mn88473 DVB
frontend driver.
Special thanks to Benjamin Larsson (who has documented the registers
in the LinuxTV wiki: [0]) and to a user with the nickname "dongs" in
the #linuxtv IRC channel (who provided more details about the MN88473).

There are multiple reasons why I decided to send this as RFC:
- I do not have any hardware signal generator, so I can only test with
  what I have available
- a quick test on DVB-C and DVB-T shows that CNR seems correct (DVB-T2
  is untested because it is not available in my area... yet)
- signal strength seems to be too low (compared to my em28xx device)
- I am not sure whether my implementation for bit errors and block
  errors is correct


[0] https://www.linuxtv.org/wiki/index.php/Panasonic_MN88472


Martin Blumenstingl (1):
  media: mn88473: add DVBv5 statistics support

 drivers/media/dvb-frontends/mn88473.c      | 485 ++++++++++++++++++++++++++---
 drivers/media/dvb-frontends/mn88473_priv.h |   1 +
 2 files changed, 445 insertions(+), 41 deletions(-)

-- 
2.10.0

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