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Benjamin Gaignard 4adec7da05 iio: stm32 trigger: Add quadrature encoder device
One of the features of STM32 trigger hardware block is a quadrature
encoder that can counts up/down depending of the levels and edges
of the selected external pins.

This patch allow to read/write the counter, get it direction,
set/get quadrature modes and get scale factor.

When counting up preset value is the limit of the counter.
When counting down the counter start from preset value down to 0.
This preset value could be set/get by using
/sys/bus/iio/devices/iio:deviceX/in_count0_preset attribute.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-14 15:08:31 +01:00
arch powerpc fixes for 4.11 #6 2017-03-26 10:34:10 -07:00
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Documentation iio: stm32 trigger: Add quadrature encoder device 2017-04-14 15:08:31 +01:00
drivers iio: stm32 trigger: Add quadrature encoder device 2017-04-14 15:08:31 +01:00
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fs driver core fix for 4.11-rc4 2017-03-26 11:05:42 -07:00
include iio: stm32 trigger: Add quadrature encoder device 2017-04-14 15:08:31 +01:00
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kernel Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit 2017-03-25 15:13:55 -07:00
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net A fix for a writeback deadlock caused by a GFP_KERNEL allocation on the 2017-03-24 14:35:39 -07:00
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MAINTAINERS Third set of new device support, cleanups and features for IIO in the 4.12 cycle 2017-04-03 15:29:12 +02:00
Makefile Linux 4.11-rc4 2017-03-26 14:15:16 -07:00
README

Linux kernel
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