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Mon, 01 Apr 2019 23:31:12 -0700 (PDT) Received: from localhost.localdomain ([2001:268:c0a5:4ce0:c70:4af9:86e2:2]) by smtp.gmail.com with ESMTPSA id a17sm19327289pfj.123.2019.04.01.23.31.02 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 01 Apr 2019 23:31:12 -0700 (PDT) From: William Breathitt Gray To: gregkh@linuxfoundation.org Subject: [PATCH v10 06/18] counter: 104-quad-8: Documentation: Add Generic Counter sysfs documentation Date: Tue, 2 Apr 2019 15:30:41 +0900 Message-Id: <90ea2b39df0194bcf6389802c1b6e22decdf2f8f.1554184734.git.vilhelm.gray@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, benjamin.gaignard@st.com, linux-pwm@vger.kernel.org, linux-iio@vger.kernel.org, patrick.havelange@essensium.com, thierry.reding@gmail.com, pmeerw@pmeerw.net, lars@metafoo.de, daniel.lezcano@linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, david@lechnology.com, William Breathitt Gray , robh+dt@kernel.org, Jonathan Cameron , tglx@linutronix.de, fabrice.gasnier@st.com, esben@haabendal.dk, shawnguo@kernel.org, linux-kernel@vger.kernel.org, leoyang.li@nxp.com, knaack.h@gmx.de, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, jic23@kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This patch adds standard documentation for the Generic Counter interface userspace sysfs attributes of the 104-QUAD-8 driver. Acked-by: Jonathan Cameron Signed-off-by: William Breathitt Gray --- .../ABI/testing/sysfs-bus-counter-104-quad-8 | 36 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 37 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 diff --git a/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 new file mode 100644 index 000000000000..46b1f33b2fce --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 @@ -0,0 +1,36 @@ +What: /sys/bus/counter/devices/counterX/signalY/index_polarity +KernelVersion: 5.2 +Contact: linux-iio@vger.kernel.org +Description: + Active level of index input Signal Y; irrelevant in + non-synchronous load mode. + +What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available +What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available +KernelVersion: 5.2 +Contact: linux-iio@vger.kernel.org +Description: + Discrete set of available values for the respective Signal Y + configuration are listed in this file. + +What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode +KernelVersion: 5.2 +Contact: linux-iio@vger.kernel.org +Description: + Configure the counter associated with Signal Y for + non-synchronous or synchronous load mode. Synchronous load mode + cannot be selected in non-quadrature (Pulse-Direction) clock + mode. + + non-synchronous: + A logic low level is the active level at this index + input. The index function (as enabled via preset_enable) + is performed directly on the active level of the index + input. + + synchronous: + Intended for interfacing with encoder Index output in + quadrature clock mode. The active level is configured + via index_polarity. The index function (as enabled via + preset_enable) is performed synchronously with the + quadrature clock on the active level of the index input. diff --git a/MAINTAINERS b/MAINTAINERS index 663e7a62752a..d3d93a5d3b10 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -272,6 +272,7 @@ ACCES 104-QUAD-8 DRIVER M: William Breathitt Gray L: linux-iio@vger.kernel.org S: Maintained +F: Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 F: Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8 F: drivers/counter/104-quad-8.c -- 2.21.0