korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-24 14:54:49 +08:00
Code Issues Packages Projects Releases Wiki Activity

staging: iio: ad5933: fix order of cycle conditions

Browse Source 
Correctly handle the settling time cycles value. The else branch is an
impossible condition, > 1022 in the else branch of > 511. Flipping the order.

Based on the Table 13 at the bottom of Page 25 of the Data Sheet:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5933.pdf

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Luis de Bethencourt 2016-06-01 20:25:54 +01:00 committed by Jonathan Cameron
parent 7e982555d8
commit f4070a1914
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/staging/iio/impedance-analyzer/ad5933.c
View File

@ -444,10 +444,10 @@ static ssize_t ad5933_store(struct device *dev,
st->settling_cycles = val;
/* 2x, 4x handling, see datasheet */
if (val > 511)
val = (val >> 1) | (1 << 9);
else if (val > 1022)
if (val > 1022)
val = (val >> 2) | (3 << 9);
else if (val > 511)
val = (val >> 1) | (1 << 9);
dat = cpu_to_be16(val);
ret = ad5933_i2c_write(st->client,