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    • Jonathan Cameron's avatar
      iio: accel: st_accel: Add lis3l02dq support · 4e68cfbf
      Jonathan Cameron authored
      Time to finally kill off the venerable (it was one of my first drivers)
      lis3l02dq driver in favour of adding support in the st sensors framework.
      This does loose us the event support that driver always had, but I think
      that will reappear at some point and in the meantime the maintenance
      advantages of dropping the 'special' driver for this one part outweigh
      the issues.
      It's worth noting this part is ancient and I may well be the only person
      who still has any on hardware running recent kernels.
      It has a few 'quirks'.
       - No WAI register so that just became optional.
       - A BDU option that really does block updates.  Completely.
         Whatever you do, you don't get any more data with it set.
         It is documented the same as more modern parts but I presume they
         are actually clearing for updates after a read of both bytes!
       - Fixed scale.
       - It's too quick.  Even at slowest rate (280Hz) I can't read out fast
         enough on my board (stargate 2) to beat new data coming in. Linus'
         repeat read patch doesn't help in this case. It just means I get 10
         readings before dying... So in reality this will get used with
         software triggers only unless someone has this long out of production
         device on a quick board.
      Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
      Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      Cc: Denis CIOCCA <denis.ciocca@st.com>
      Cc: Crestez Dan Leonard <leonard.crestez@intel.com>
      Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
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