From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de, a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com, gwendal@chromium.org, alexandre.belloni@bootlin.com, david@lechnology.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com, William Breathitt Gray <vilhelm.gray@gmail.com> Subject: [PATCH v12 00/17] Introduce the Counter character device interface Date: Mon, 5 Jul 2021 17:18:48 +0900 [thread overview] Message-ID: <cover.1625471640.git.vilhelm.gray@gmail.com> (raw) Changes in v12: - Move unlock to after register set in quad8_count_ceiling_write() - Add locking protection to counter_set_event_node() - Fix sparse warning by using {} instead of {0} - Clean up and organize comments for clarity - Reduce boilerplate by utilizing devm_add_action_or_reset() - Use switch statements in ti_eqep_action_read() to make possible cases more obvious I pulled out a lot of bits and pieces to their own patches; hopefully that makes reviewing this patchset much simpler than before. This patchset is also available on my personal git repo for convenience: https://gitlab.com/vilhelmgray/iio/-/tree/counter_chrdev_v12 The patches preceding "counter: Internalize sysfs interface code" are primarily cleanup and fixes that can be picked up and applied now to the IIO tree if so desired. The "counter: Internalize sysfs interface code" patch as well may be considered for pickup because it is relatively safe and makes no changes to the userspace interface. To summarize the main points of this patchset: there are no changes to the existing Counter sysfs userspace interface; a Counter character device interface is introduced that allows Counter events and associated data to be read() by userspace; the events_configure() and watch_validate() driver callbacks are introduced to support Counter events; and IRQ support is added to the 104-QUAD-8 driver, serving as an example of how to support the new Counter events functionality. Something that should still be discussed: should the struct counter_event "status" member be 8 bits or 32 bits wide? This member will provide the return status (system error number) of an event operation. William Breathitt Gray (17): counter: 104-quad-8: Return error when invalid mode during ceiling_write counter: Return error code on invalid modes counter: Standardize to ERANGE for limit exceeded errors counter: Rename counter_signal_value to counter_signal_level counter: Rename counter_count_function to counter_function counter: Internalize sysfs interface code counter: Update counter.h comments to reflect sysfs internalization docs: counter: Update to reflect sysfs internalization counter: Move counter enums to uapi header counter: Add character device interface docs: counter: Document character device interface tools/counter: Create Counter tools counter: Implement signalZ_action_component_id sysfs attribute counter: Implement *_component_id sysfs attributes counter: Implement events_queue_size sysfs attribute counter: 104-quad-8: Replace mutex with spinlock counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8 Documentation/ABI/testing/sysfs-bus-counter | 38 +- Documentation/driver-api/generic-counter.rst | 366 +++- .../userspace-api/ioctl/ioctl-number.rst | 1 + MAINTAINERS | 3 +- drivers/counter/104-quad-8.c | 728 ++++---- drivers/counter/Kconfig | 6 +- drivers/counter/Makefile | 1 + drivers/counter/counter-chrdev.c | 498 ++++++ drivers/counter/counter-chrdev.h | 14 + drivers/counter/counter-core.c | 182 ++ drivers/counter/counter-sysfs.c | 953 +++++++++++ drivers/counter/counter-sysfs.h | 13 + drivers/counter/counter.c | 1496 ----------------- drivers/counter/ftm-quaddec.c | 59 +- drivers/counter/intel-qep.c | 150 +- drivers/counter/interrupt-cnt.c | 73 +- drivers/counter/microchip-tcb-capture.c | 103 +- drivers/counter/stm32-lptimer-cnt.c | 176 +- drivers/counter/stm32-timer-cnt.c | 147 +- drivers/counter/ti-eqep.c | 205 ++- include/linux/counter.h | 716 ++++---- include/linux/counter_enum.h | 45 - include/uapi/linux/counter.h | 133 ++ tools/Makefile | 13 +- tools/counter/Build | 1 + tools/counter/Makefile | 53 + tools/counter/counter_example.c | 95 ++ 27 files changed, 3501 insertions(+), 2767 deletions(-) create mode 100644 drivers/counter/counter-chrdev.c create mode 100644 drivers/counter/counter-chrdev.h create mode 100644 drivers/counter/counter-core.c create mode 100644 drivers/counter/counter-sysfs.c create mode 100644 drivers/counter/counter-sysfs.h delete mode 100644 drivers/counter/counter.c delete mode 100644 include/linux/counter_enum.h create mode 100644 include/uapi/linux/counter.h create mode 100644 tools/counter/Build create mode 100644 tools/counter/Makefile create mode 100644 tools/counter/counter_example.c base-commit: 6cbb3aa0f9d5d23221df787cf36f74d3866fdb78 -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de, a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com, gwendal@chromium.org, alexandre.belloni@bootlin.com, david@lechnology.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com, William Breathitt Gray <vilhelm.gray@gmail.com> Subject: [PATCH v12 00/17] Introduce the Counter character device interface Date: Mon, 5 Jul 2021 17:18:48 +0900 [thread overview] Message-ID: <cover.1625471640.git.vilhelm.gray@gmail.com> (raw) Changes in v12: - Move unlock to after register set in quad8_count_ceiling_write() - Add locking protection to counter_set_event_node() - Fix sparse warning by using {} instead of {0} - Clean up and organize comments for clarity - Reduce boilerplate by utilizing devm_add_action_or_reset() - Use switch statements in ti_eqep_action_read() to make possible cases more obvious I pulled out a lot of bits and pieces to their own patches; hopefully that makes reviewing this patchset much simpler than before. This patchset is also available on my personal git repo for convenience: https://gitlab.com/vilhelmgray/iio/-/tree/counter_chrdev_v12 The patches preceding "counter: Internalize sysfs interface code" are primarily cleanup and fixes that can be picked up and applied now to the IIO tree if so desired. The "counter: Internalize sysfs interface code" patch as well may be considered for pickup because it is relatively safe and makes no changes to the userspace interface. To summarize the main points of this patchset: there are no changes to the existing Counter sysfs userspace interface; a Counter character device interface is introduced that allows Counter events and associated data to be read() by userspace; the events_configure() and watch_validate() driver callbacks are introduced to support Counter events; and IRQ support is added to the 104-QUAD-8 driver, serving as an example of how to support the new Counter events functionality. Something that should still be discussed: should the struct counter_event "status" member be 8 bits or 32 bits wide? This member will provide the return status (system error number) of an event operation. William Breathitt Gray (17): counter: 104-quad-8: Return error when invalid mode during ceiling_write counter: Return error code on invalid modes counter: Standardize to ERANGE for limit exceeded errors counter: Rename counter_signal_value to counter_signal_level counter: Rename counter_count_function to counter_function counter: Internalize sysfs interface code counter: Update counter.h comments to reflect sysfs internalization docs: counter: Update to reflect sysfs internalization counter: Move counter enums to uapi header counter: Add character device interface docs: counter: Document character device interface tools/counter: Create Counter tools counter: Implement signalZ_action_component_id sysfs attribute counter: Implement *_component_id sysfs attributes counter: Implement events_queue_size sysfs attribute counter: 104-quad-8: Replace mutex with spinlock counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8 Documentation/ABI/testing/sysfs-bus-counter | 38 +- Documentation/driver-api/generic-counter.rst | 366 +++- .../userspace-api/ioctl/ioctl-number.rst | 1 + MAINTAINERS | 3 +- drivers/counter/104-quad-8.c | 728 ++++---- drivers/counter/Kconfig | 6 +- drivers/counter/Makefile | 1 + drivers/counter/counter-chrdev.c | 498 ++++++ drivers/counter/counter-chrdev.h | 14 + drivers/counter/counter-core.c | 182 ++ drivers/counter/counter-sysfs.c | 953 +++++++++++ drivers/counter/counter-sysfs.h | 13 + drivers/counter/counter.c | 1496 ----------------- drivers/counter/ftm-quaddec.c | 59 +- drivers/counter/intel-qep.c | 150 +- drivers/counter/interrupt-cnt.c | 73 +- drivers/counter/microchip-tcb-capture.c | 103 +- drivers/counter/stm32-lptimer-cnt.c | 176 +- drivers/counter/stm32-timer-cnt.c | 147 +- drivers/counter/ti-eqep.c | 205 ++- include/linux/counter.h | 716 ++++---- include/linux/counter_enum.h | 45 - include/uapi/linux/counter.h | 133 ++ tools/Makefile | 13 +- tools/counter/Build | 1 + tools/counter/Makefile | 53 + tools/counter/counter_example.c | 95 ++ 27 files changed, 3501 insertions(+), 2767 deletions(-) create mode 100644 drivers/counter/counter-chrdev.c create mode 100644 drivers/counter/counter-chrdev.h create mode 100644 drivers/counter/counter-core.c create mode 100644 drivers/counter/counter-sysfs.c create mode 100644 drivers/counter/counter-sysfs.h delete mode 100644 drivers/counter/counter.c delete mode 100644 include/linux/counter_enum.h create mode 100644 include/uapi/linux/counter.h create mode 100644 tools/counter/Build create mode 100644 tools/counter/Makefile create mode 100644 tools/counter/counter_example.c base-commit: 6cbb3aa0f9d5d23221df787cf36f74d3866fdb78 -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-07-05 8:19 UTC|newest] Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-05 8:18 William Breathitt Gray [this message] 2021-07-05 8:18 ` [PATCH v12 00/17] Introduce the Counter character device interface William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 01/17] counter: 104-quad-8: Return error when invalid mode during ceiling_write William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 02/17] counter: Return error code on invalid modes William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-09 17:40 ` David Lechner 2021-07-09 17:40 ` David Lechner 2021-07-05 8:18 ` [PATCH v12 03/17] counter: Standardize to ERANGE for limit exceeded errors William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 04/17] counter: Rename counter_signal_value to counter_signal_level William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 05/17] counter: Rename counter_count_function to counter_function William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 06/17] counter: Internalize sysfs interface code William Breathitt Gray 2021-07-11 9:49 ` Syed Nayyar Waris 2021-07-11 11:42 ` Jonathan Cameron 2021-07-11 11:42 ` Jonathan Cameron 2021-07-05 8:18 ` [PATCH v12 07/17] counter: Update counter.h comments to reflect sysfs internalization William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-09 17:49 ` David Lechner 2021-07-09 17:49 ` David Lechner 2021-07-10 9:41 ` William Breathitt Gray 2021-07-10 9:41 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 08/17] docs: counter: Update " William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-09 17:56 ` David Lechner 2021-07-09 17:56 ` David Lechner 2021-07-05 8:18 ` [PATCH v12 09/17] counter: Move counter enums to uapi header William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 10/17] counter: Add character device interface William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-10 19:37 ` David Lechner 2021-07-10 19:37 ` David Lechner 2021-07-11 12:20 ` Jonathan Cameron 2021-07-11 12:20 ` Jonathan Cameron 2021-07-12 10:28 ` William Breathitt Gray 2021-07-12 10:28 ` William Breathitt Gray 2021-07-05 8:18 ` [PATCH v12 11/17] docs: counter: Document " William Breathitt Gray 2021-07-05 8:18 ` William Breathitt Gray 2021-07-10 20:15 ` David Lechner 2021-07-10 20:15 ` David Lechner 2021-07-11 10:41 ` William Breathitt Gray 2021-07-11 10:41 ` William Breathitt Gray 2021-07-05 8:19 ` [PATCH v12 12/17] tools/counter: Create Counter tools William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-10 16:53 ` David Lechner 2021-07-10 16:53 ` David Lechner 2021-07-11 11:28 ` William Breathitt Gray 2021-07-11 11:28 ` William Breathitt Gray 2021-07-11 14:05 ` David Lechner 2021-07-11 14:05 ` David Lechner 2021-07-11 13:22 ` Jonathan Cameron 2021-07-11 13:22 ` Jonathan Cameron 2021-07-05 8:19 ` [PATCH v12 13/17] counter: Implement signalZ_action_component_id sysfs attribute William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-10 16:20 ` David Lechner 2021-07-10 16:20 ` David Lechner 2021-07-05 8:19 ` [PATCH v12 14/17] counter: Implement *_component_id sysfs attributes William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-10 17:06 ` David Lechner 2021-07-10 17:06 ` David Lechner 2021-07-11 13:28 ` Jonathan Cameron 2021-07-11 13:28 ` Jonathan Cameron 2021-07-11 14:08 ` David Lechner 2021-07-11 14:08 ` David Lechner 2021-07-12 10:19 ` Jonathan Cameron 2021-07-12 10:19 ` Jonathan Cameron 2021-07-05 8:19 ` [PATCH v12 15/17] counter: Implement events_queue_size sysfs attribute William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-06 11:40 ` Jarkko Nikula 2021-07-06 11:40 ` Jarkko Nikula 2021-07-10 10:25 ` William Breathitt Gray 2021-07-10 10:25 ` William Breathitt Gray 2021-07-10 15:43 ` David Lechner 2021-07-10 15:43 ` David Lechner 2021-07-10 16:08 ` David Lechner 2021-07-10 16:08 ` David Lechner 2021-07-10 17:53 ` David Lechner 2021-07-10 17:53 ` David Lechner 2021-07-11 9:12 ` William Breathitt Gray 2021-07-11 9:12 ` William Breathitt Gray 2021-07-05 8:19 ` [PATCH v12 16/17] counter: 104-quad-8: Replace mutex with spinlock William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-05 8:19 ` [PATCH v12 17/17] counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8 William Breathitt Gray 2021-07-05 8:19 ` William Breathitt Gray 2021-07-11 13:44 ` Jonathan Cameron 2021-07-11 13:44 ` Jonathan Cameron 2021-07-12 10:59 ` William Breathitt Gray 2021-07-12 10:59 ` William Breathitt Gray 2021-07-06 11:40 ` [PATCH v12 00/17] Introduce the Counter character device interface Jarkko Nikula 2021-07-06 11:40 ` Jarkko Nikula 2021-07-07 0:28 ` William Breathitt Gray 2021-07-07 0:28 ` William Breathitt Gray 2021-07-11 13:48 ` Jonathan Cameron 2021-07-11 13:48 ` Jonathan Cameron 2021-07-12 10:48 ` William Breathitt Gray 2021-07-12 10:48 ` William Breathitt Gray 2021-07-05 16:36 [PATCH v12 15/17] counter: Implement events_queue_size sysfs attribute kernel test robot 2021-07-06 7:48 ` Dan Carpenter 2021-07-06 7:48 ` Dan Carpenter
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