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iio:at91: Report scale as fractional value
author
Lars-Peter Clausen
<lars@metafoo.de>
Sat, 28 Sep 2013 09:31:00 +0000
(10:31 +0100)
committer
Jonathan Cameron
<jic23@kernel.org>
Tue, 1 Oct 2013 15:19:12 +0000
(16:19 +0100)
Move the complexity of calculating the fixed point scale to the core.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/adc/at91_adc.c
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diff --git
a/drivers/iio/adc/at91_adc.c
b/drivers/iio/adc/at91_adc.c
index 78121949d6efe38fa29127dc7e73e3c1c3fe8979..8b93295369b0e0efc6e4febab72a05ebfbcb0f81 100644
(file)
--- a/
drivers/iio/adc/at91_adc.c
+++ b/
drivers/iio/adc/at91_adc.c
@@
-366,9
+366,9
@@
static int at91_adc_read_raw(struct iio_dev *idev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- *val =
(st->vref_mv * 1000) >> chan->scan_type.realbits
;
- *val2 =
0
;
- return IIO_VAL_
INT_PLUS_MICRO
;
+ *val =
st->vref_mv
;
+ *val2 =
chan->scan_type.realbits
;
+ return IIO_VAL_
FRACTIONAL_LOG2
;
default:
break;
}
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