ab8500-btemp: Filter btemp readings

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Battery tempreature readings sometimes fail and results in
a value far from recent values. This patch adds a software
filter that disposes such readings, by allowing direct
updates on temperature only if two samples result in the
same temperature. Else only allow 1 degree change from previous
reported value in the direction of the new measurement.

Signed-off-by: Hakan Berg <hakan.berg@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Marcus COOPER <marcus.xm.cooper@stericsson.com>
Reviewed-by: Martin SJOBLOM <martin.w.sjoblom@stericsson.com>
Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>

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Hakan Berg 2012-07-17 14:17:16 +02:00 • committed by Lee Jones

parent d4f510f6c3

commit 908fe8d6a5

1 changed files with 21 additions and 6 deletions

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drivers/power/ab8500_btemp.c

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