iio:at91: Report scale as fractional value
authorLars-Peter Clausen <lars@metafoo.de>
Sat, 28 Sep 2013 09:31:00 +0000 (10:31 +0100)
committerJonathan 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

index 78121949d6efe38fa29127dc7e73e3c1c3fe8979..8b93295369b0e0efc6e4febab72a05ebfbcb0f81 100644 (file)
@@ -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;
        }