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path: root/drivers/iio/adc/hi8435.c
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* iio: remove explicit IIO device parent assignmentAlexandru Ardelean2020-06-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: hi8435: Drop hi8435_remove() by using devres for remaining elementsAndrey Smirnov2019-08-111-21/+11
| | | | | | | | | | | Convert the remainder of hi8435_probe() to use devres and get rid of hi8435_remove(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Chris Healy <cphealy@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: hi8435: Use gpiod_set_value_cansleep()Andrey Smirnov2019-08-111-1/+1
| | | | | | | | | | | | | Use gpiod_set_value_cansleep() instead of gpiod_set_value() to support the case when reset pin is connected to a GPIO expander. See ZII VF610 SCU4 AIB for one such example. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Cc: Chris Healy <cphealy@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner2019-05-301-5/+1
| | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* iio:adc: drop assign iio_info.driver_module and iio_trigger_ops.ownerJonathan Cameron2017-08-221-1/+0
| | | | | | | | | The equivalent of both of these are now done via macro magic when the relevant register calls are made. The actual structure elements will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
* Revert "iio: hi8435: cleanup reset gpio"Jonathan Cameron2017-06-031-7/+5
| | | | | | | | | | This reverts commit 61305664a542f874283f74bf0b27ddb31f5045d7. This commit was applied prematurely and will break some existing situations where the signal is inverted as part of voltage level conversions. Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: hi8435: remote ampersands from hi8435_info definitionNikita Yushchenko2017-06-031-4/+4
| | | | | | | | | C syntax allows apersands when initializing structures fields with function pointers, but in Linux sources ampersands are normally not used in thix context. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: hi8435: cleanup reset gpioNikita Yushchenko2017-05-201-5/+7
| | | | | | | | | | | | | | | | | | Reset GPIO is active low. Currently driver uses gpiod_set_value(1) to clean reset, which depends on device tree to contain GPIO_ACTIVE_HIGH - that does not match reality. This fixes driver to use _raw version of gpiod_set_value() to enforce active-low semantics despite of what's written in device tree. Allowing device tree to override that only opens possibility for errors and does not add any value. Additionally, use _cansleep version to make things work with i2c-gpio and other sleeping gpio drivers. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: hi8435: make in_voltage_sensing_mode_available visibleNikita Yushchenko2017-05-201-0/+1
| | | | | | | | | | Possible values of sensing_mode are encoded with strings and actual strings used are not obvious. Provide a hint by enabling in_voltage_sensing_mode_available attribute. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: hi8435: avoid garbage event at first enableNikita Yushchenko2017-05-201-2/+13
| | | | | | | | | | | | | | | | | Currently, driver generates events for channels if new reading differs from previous one. This "previous value" is initialized to zero, which results into event if value is constant-one. Fix that by initializing "previous value" by reading at event enable time. This provides reliable sequence for userspace: - enable event, - AFTER THAT read current value, - AFTER THAT each event will correspond to change. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: hi8435: add raw accessNikita Yushchenko2017-05-201-0/+22
| | | | | | | | | | | With current event-only driver, it is not possible for user space application to know current senses if they don't change since application starts. Address that by adding raw access to channels. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: adc: add missing of_node references to iio_devMatt Ranostay2016-07-031-0/+1
| | | | | | | | Adding missing indio_dev->dev.of_node references to allow iio consumers to access the device channels. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:core: timestamping clock selection supportGregor Boirie2016-06-301-1/+1
| | | | | | | | | | | | | | | Adds a new per-device sysfs attribute "current_timestamp_clock" to allow userspace to select a particular POSIX clock for buffered samples and events timestamping. Following clocks, as listed in clock_gettime(2), are supported: CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and CLOCK_TAI. Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com> Acked-by: Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: adc: hi8435: Holt HI-8435 threshold detectorVladimir Barinov2015-09-231-0/+534
Add Holt threshold detector driver for HI-8435 chip Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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