From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@jic23.retrosnub.co.uk Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, William Breathitt Gray <vilhelm.gray@gmail.com> Subject: [PATCH v2 3/7] docs: driver-api: generic-counter: Update Count and Signal data types Date: Wed, 18 Sep 2019 16:52:44 +0900 [thread overview] Message-ID: <f7e5486216f4368e1e00a20842928a1f0f6a4135.1568792697.git.vilhelm.gray@gmail.com> (raw) In-Reply-To: <cover.1568792697.git.vilhelm.gray@gmail.com> Count data is now always represented as an unsigned integer, while Signal data is either SIGNAL_LOW or SIGNAL_HIGH. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- Documentation/driver-api/generic-counter.rst | 22 +++++++------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/Documentation/driver-api/generic-counter.rst b/Documentation/driver-api/generic-counter.rst index 8382f01a53e3..161652fc1025 100644 --- a/Documentation/driver-api/generic-counter.rst +++ b/Documentation/driver-api/generic-counter.rst @@ -39,10 +39,7 @@ There are three core components to a counter: COUNT ----- A Count represents the count data for a set of Signals. The Generic -Counter interface provides the following available count data types: - -* COUNT_POSITION: - Unsigned integer value representing position. +Counter interface represents the count data as an unsigned integer. A Count has a count function mode which represents the update behavior for the count data. The Generic Counter interface provides the following @@ -93,19 +90,16 @@ SIGNAL A Signal represents a counter input data; this is the input data that is evaluated by the counter to determine the count data; e.g. a quadrature signal output line of a rotary encoder. Not all counter devices provide -user access to the Signal data. - -The Generic Counter interface provides the following available signal -data types for when the Signal data is available for user access: +user access to the Signal data, so exposure is optional for drivers. -* SIGNAL_LEVEL: - Signal line state level. The following states are possible: +When the Signal data is available for user access, the Generic Counter +interface provides the following available signal values: - - SIGNAL_LEVEL_LOW: - Signal line is in a low state. +* SIGNAL_LOW: + Signal line is in a low state. - - SIGNAL_LEVEL_HIGH: - Signal line is in a high state. +* SIGNAL_HIGH: + Signal line is in a high state. A Signal may be associated with one or more Counts. -- 2.23.0
WARNING: multiple messages have this Message-ID (diff)
From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@jic23.retrosnub.co.uk Cc: alexandre.torgue@st.com, linux-iio@vger.kernel.org, patrick.havelange@essensium.com, linux-kernel@vger.kernel.org, William Breathitt Gray <vilhelm.gray@gmail.com>, mcoquelin.stm32@gmail.com, fabrice.gasnier@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 3/7] docs: driver-api: generic-counter: Update Count and Signal data types Date: Wed, 18 Sep 2019 16:52:44 +0900 [thread overview] Message-ID: <f7e5486216f4368e1e00a20842928a1f0f6a4135.1568792697.git.vilhelm.gray@gmail.com> (raw) In-Reply-To: <cover.1568792697.git.vilhelm.gray@gmail.com> Count data is now always represented as an unsigned integer, while Signal data is either SIGNAL_LOW or SIGNAL_HIGH. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- Documentation/driver-api/generic-counter.rst | 22 +++++++------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/Documentation/driver-api/generic-counter.rst b/Documentation/driver-api/generic-counter.rst index 8382f01a53e3..161652fc1025 100644 --- a/Documentation/driver-api/generic-counter.rst +++ b/Documentation/driver-api/generic-counter.rst @@ -39,10 +39,7 @@ There are three core components to a counter: COUNT ----- A Count represents the count data for a set of Signals. The Generic -Counter interface provides the following available count data types: - -* COUNT_POSITION: - Unsigned integer value representing position. +Counter interface represents the count data as an unsigned integer. A Count has a count function mode which represents the update behavior for the count data. The Generic Counter interface provides the following @@ -93,19 +90,16 @@ SIGNAL A Signal represents a counter input data; this is the input data that is evaluated by the counter to determine the count data; e.g. a quadrature signal output line of a rotary encoder. Not all counter devices provide -user access to the Signal data. - -The Generic Counter interface provides the following available signal -data types for when the Signal data is available for user access: +user access to the Signal data, so exposure is optional for drivers. -* SIGNAL_LEVEL: - Signal line state level. The following states are possible: +When the Signal data is available for user access, the Generic Counter +interface provides the following available signal values: - - SIGNAL_LEVEL_LOW: - Signal line is in a low state. +* SIGNAL_LOW: + Signal line is in a low state. - - SIGNAL_LEVEL_HIGH: - Signal line is in a high state. +* SIGNAL_HIGH: + Signal line is in a high state. A Signal may be associated with one or more Counts. -- 2.23.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-09-18 7:53 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-18 7:52 [PATCH v2 0/7] counter: Simplify count_read/count_write/signal_read William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 7:52 ` [PATCH v2 1/7] counter: Simplify the count_read and count_write callbacks William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 8:48 ` Benjamin Gaignard 2019-09-18 8:48 ` Benjamin Gaignard 2019-09-18 7:52 ` [PATCH v2 2/7] counter: Simplify the signal_read callback William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray [this message] 2019-09-18 7:52 ` [PATCH v2 3/7] docs: driver-api: generic-counter: Update Count and Signal data types William Breathitt Gray 2019-09-18 7:52 ` [PATCH v2 4/7] counter: 104-quad-8: Update count_read/count_write/signal_read callbacks William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 7:52 ` [PATCH v2 5/7] counter: ftm-quaddec: Update count_read and count_write callbacks William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 7:52 ` [PATCH v2 6/7] counter: stm32-lptimer-cnt: Update count_read callback William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 7:52 ` [PATCH v2 7/7] counter: stm32-timer-cnt: Update count_read and count_write callbacks William Breathitt Gray 2019-09-18 7:52 ` William Breathitt Gray 2019-09-18 12:16 ` Fabrice Gasnier 2019-09-18 12:16 ` Fabrice Gasnier 2019-09-18 8:11 ` [PATCH v2 0/7] counter: Simplify count_read/count_write/signal_read William Breathitt Gray 2019-09-18 8:11 ` William Breathitt Gray
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