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path: root/drivers/iio/counter
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2016-12-03iio: 104-quad-8: Fix active level mismatch for the preset enable optionWilliam Breathitt Gray
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: 28e5d3bb0325 ("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>
2016-12-03iio: 104-quad-8: Fix off-by-one errors when addressing IORWilliam Breathitt Gray
The Input/Output Control register (IOR) is offset by 1 from the respective channel data register. This patch fixes off-by-one errors when attempting to write to a channel IOR where the base address was not properly offset. Fixes: 28e5d3bb0325 ("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>
2016-12-03iio: 104-quad-8: Fix index control configurationWilliam Breathitt Gray
The LS7266R1 requires bits 5 & 6 to be high in order to select the Index Control Register. This patch fixes a typo that incorrectly selects the Input/Output Control Register where the Index Control Register was desired. Fixes: 28e5d3bb0325 ("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>
2016-10-01iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8William Breathitt Gray
The ACCES 104-QUAD-8 is a general purpose quadrature encoder counter/interface board. The 104-QUAD-8 is capable of monitoring the outputs of eight encoders via four on-board LSI/CSI LS7266R1 24-bit dual-axis quadrature counter chips. Core functions handled by the LS7266R1, such as direction and total count, are available. Performing a write to a counter's IIO_CHAN_INFO_RAW sets the counter and also clears the counter's respective error flag. Although the counters have a 25-bit range, only the lower 24 bits may be set, either directly or via a counter's preset attribute. Interrupts are not supported by this driver. This driver adds IIO support for the ACCES 104-QUAD-8 and ACCES 104-QUAD-4. The base port addresses for the devices may be configured via the base array module parameter. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>