From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f194.google.com ([209.85.161.194]:34264 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750726AbcI1R7k (ORCPT ); Wed, 28 Sep 2016 13:59:40 -0400 From: William Breathitt Gray To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, William Breathitt Gray Subject: [PATCH v5 0/2] Add IIO support for counter devices Date: Wed, 28 Sep 2016 13:59:32 -0400 Message-Id: Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org Changes in v5: - Refactored scale to handle values of 1, 0.5, and 0.25, in order to be consistent with the multiplication usage of the other interfaces - Reimplemented preset as an ext_info since the preset functionality is rather device specific - Reimplemented ab_enable ext_info as IIO_CHAN_INFO_ENABLE; this should make the counter enable/disable interface more intuitive - Renamed "preset_enable" attribute to "set_to_preset_on_index" (and refactored as a boolean) to make the functionality clearer - Updated documentation to account for the changes in this patchset This patchset adds new IIO channel type constants to facilitate support for counter devices. In addition, a new "counter" subdirectory is created to house drivers for these counter devices. Quadrature encoders, such as rotary encoders and linear encoders, are devices which are capable of encoding the relative position and direction of motion of a shaft. This patchset introduces several IIO constants for supporting quadrature encoder counter devices. IIO_COUNT: Current count (main data provided by the counter device) IIO_INDEX: Counter device index value Specifically, this patchset introduces a driver to support the ACCES 104-QUAD-8 device, a general purpose quadrature encoder counter/interface board capable of monitoring the outputs of eight encoders. William Breathitt Gray (2): iio: Implement counter channel type and info constants iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8 Documentation/ABI/testing/sysfs-bus-iio | 18 + .../ABI/testing/sysfs-bus-iio-counter-104-quad-8 | 125 +++++ MAINTAINERS | 6 + drivers/iio/Kconfig | 1 + drivers/iio/Makefile | 1 + drivers/iio/counter/104-quad-8.c | 593 +++++++++++++++++++++ drivers/iio/counter/Kconfig | 24 + drivers/iio/counter/Makefile | 7 + drivers/iio/industrialio-core.c | 2 + include/uapi/linux/iio/types.h | 2 + 10 files changed, 779 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8 create mode 100644 drivers/iio/counter/104-quad-8.c create mode 100644 drivers/iio/counter/Kconfig create mode 100644 drivers/iio/counter/Makefile -- 2.7.3