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iio: 104-quad-8: Fix active level mismatch for the preset enable option
The set_to_preset_on_index sysfs attribute provides a boolean
configuration option to enable a preset operation on the respective
channel's counter when Index occurs. However, the corresponding
configuration bit on the Input/Output Control register must be set low
to enable the preset operation.
This patch inverts the internal driver boolean logic exposed via the
set_to_preset_on_index attribute in order to correctly configure the
device which expects an active low bit.
Fixes: 28e5d3bb03
("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
parent
7e1c4058e7
commit
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1 changed files with 4 additions and 1 deletions
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@ -233,7 +233,7 @@ static ssize_t quad8_read_set_to_preset_on_index(struct iio_dev *indio_dev,
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const struct quad8_iio *const priv = iio_priv(indio_dev);
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return snprintf(buf, PAGE_SIZE, "%u\n",
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priv->preset_enable[chan->channel]);
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!priv->preset_enable[chan->channel]);
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}
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static ssize_t quad8_write_set_to_preset_on_index(struct iio_dev *indio_dev,
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@ -250,6 +250,9 @@ static ssize_t quad8_write_set_to_preset_on_index(struct iio_dev *indio_dev,
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if (ret)
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return ret;
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/* Preset enable is active low in Input/Output Control register */
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preset_enable = !preset_enable;
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priv->preset_enable[chan->channel] = preset_enable;
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ior_cfg = priv->ab_enable[chan->channel] |
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