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path: root/drivers/iio/humidity/hts221_core.c
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* iio: humidity: hts211: drop casting to void in dev_set_drvdataJavier Carrasco2024-03-251-1/+1
| | | | | | | | | | | The C standard specifies that there is no need to cast from a pointer to void [1]. Therefore, it can be safely dropped. [1] C Standard Committee: https://c0x.shape-of-code.com/6.3.2.3.html Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240303-void_in_dev_set_drvdata-v1-3-ae39027d740b@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts211: Use devm_regulator_get_enable()Jonathan Cameron2022-11-231-23/+4
| | | | | | | | | | | | This driver only turns the power on at probe and off via a custom devm_add_action_or_reset() callback. The new devm_regulator_get_enable() replaces this boilerplate code. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20221016163409.320197-10-jic23@kernel.org
* iio: humidity: hts221: Move symbol exports into IIO_HTS221 namespaceJonathan Cameron2022-06-151-2/+3
| | | | | | | | | | | | | | Avoid unnecessary pollution of the global symbol namespace by moving library functions in to a specific namespace and import that into the drivers that make use of the functions. For more info: https://lwn.net/Articles/760045/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/20220220181522.541718-7-jic23@kernel.org Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/20220604161223.461847-4-jic23@kernel.org
* iio: humidity: hts221: Use EXPORT_SIMPLE_DEV_PM_OPS() to allow compiler to ↵Jonathan Cameron2022-06-151-6/+3
| | | | | | | | | | | | | | | remove dead code. If CONFIG_PM_SLEEP is not defined using EXPORT_SIMPLE_DEV_PM_OPS() in conjunction with pm_sleep_ptr() allows the compiler to remove the unused code and data. This removes the need for __maybe_unused markings etc. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/20220220181522.541718-6-jic23@kernel.org Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/20220604161223.461847-3-jic23@kernel.org
* iio: humidity: hts221: add vdd voltage regulatorLorenzo Bianconi2020-12-031-0/+37
| | | | | | | | | Like all other ST sensors, hts221 devices have VDD power line. Introduce VDD voltage regulator to control it. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/6b3347e78f4f920c48eb6a66936d3b69cb9ff53a.1606045688.git.lorenzo@kernel.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: remove left-over parent assignmentsAlexandru Ardelean2020-06-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | These were found by doing some shell magic: ------------ for file in $(git grep -w devm_iio_device_alloc | cut -d: -f1 | sort | uniq) ; do if grep 'parent =' $file | grep -v trig | grep -vq devm_; then echo "$file -> $(grep "parent =" $file)" fi done ----------- The output is bearable [after the semantic patch is applied]. There is a mix of trigger assignments with some iio device parent assignments that are removed via this patch. JC: A few more added via inspection of all parent = statements in drivers/iio. Some of these may just have crossed with this series, others were less obvious to scripting due to some cross file / module boundary calls. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: remove usage of iio_priv_to_dev()Alexandru Ardelean2020-06-141-2/+2
| | | | | | | | | | | | | | | | | | We may want to get rid of the iio_priv_to_dev() helper. That's a bit uncertain at this point. The reason is that we will hide some of the members of the iio_dev structure (to prevent drivers from accessing them directly), and that will also mean hiding the implementation of the iio_priv_to_dev() helper inside the IIO core. Hiding the implementation of iio_priv_to_dev() implies that some fast-paths may not be fast anymore, so a general idea is to try to get rid of the iio_priv_to_dev() altogether. For this driver, removing the iio_priv_to_dev() helper means passing the iio_dev object on hts221_allocate_buffers() & hts221_allocate_trigger(). Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: move register definitions to sensor structsLorenzo Bianconi2019-12-151-13/+6
| | | | | | | | Move some register definitions to hts221_avg_list, hts221_avg_list and hts221_channels since they are used only there and simplify driver code Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177Thomas Gleixner2019-05-301-2/+1
| | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): licensed under the gpl 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 135 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170026.071193225@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* iio: humidity: hts221: remove unnecessary get_unaligned_le16()Lorenzo Bianconi2018-01-301-4/+3
| | | | | | | | Remove unnecessary unaligned access routine in hts221_read_oneshot() and the related include Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: add regmap API supportLorenzo Bianconi2018-01-301-72/+43
| | | | | | | | | Introduce regmap API support to access to i2c/spi bus instead of using a custom support. Remove lock mutex since concurrency is already managed by regmap API Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: remove warnings in hts221_parse_{temp,rh}_caldata()Lorenzo Bianconi2018-01-301-13/+15
| | | | | | | | | | | | | | | | | | | | Remove following sparse warnings in hts221_parse_temp_caldata() and in hts221_parse_rh_caldata(): drivers/iio/humidity/hts221_core.c:302:19: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:314:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:320:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:355:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:361:18: warning: cast to restricted __le16 Fixes: e4a70e3e7d84 ("iio: humidity: add support to hts221 rh/temp combo device") Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: move common code in hts221_coreLorenzo Bianconi2018-01-081-2/+16
| | | | | | | | Move duplicated i2c/spi probe code in hts221_probe() Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* iio:humidity: 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>
* iio: humidity: hts221: move drdy enable logic in hts221_trig_set_state()Lorenzo Bianconi2017-07-251-14/+0
| | | | | | | | Move data-ready configuration in hts221_buffer.c since it is only related to trigger logic Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: support active-low interruptsLorenzo Bianconi2017-07-221-2/+1
| | | | | | | | | Add support for active low interrupts (IRQF_TRIGGER_LOW and IRQF_TRIGGER_FALLING). Configure the device as active high or low according to the requested irq line. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: squash hts221_power_on/off in hts221_set_enableLorenzo Bianconi2017-07-221-19/+5
| | | | | Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: avoid useless ODR reconfigurationLorenzo Bianconi2017-07-221-9/+8
| | | | | | | | Configure sensor ODR just in hts221_write_raw() in order to avoid to set device sample rate multiple times. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: do not overwrite reserved data during power-downLorenzo Bianconi2017-07-221-6/+4
| | | | | | | | | | | GENMASK(6, 3) in CTRL_REG1 and GENMASK(6, 2) in CTRL_REG2 are marked reserved. Do not changed the original value (not declared in the datasheet) during power-down/suspend routines. Fixes: e4a70e3e7d84 (iio: humidity: add support to hts221 rh/temp device) Fixes: b7079eeac5da (iio: humidity: hts221: add power management support) Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: move BDU configuration in probe routineLorenzo Bianconi2017-07-221-6/+6
| | | | | | | | Enable Block Data Update in hts221_probe() in order to avoid to reconfigure it every time the sensor is enabled Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: refactor write_with_mask codeLorenzo Bianconi2017-07-221-52/+42
| | | | | | | | | | Move bit-shift in hts221_write_with_mask() instead of coding the shift depth in the configured value. That change will be necessary to fix an issue in device power-down procedure. Simplify hts221_avg_list table management Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: humidity: hts221: add power management supportLorenzo Bianconi2017-05-141-4/+50
| | | | | | | Add system sleep power management support to hts221 driver Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: humidity: add support to hts221 rh/temp combo deviceLorenzo Bianconi2016-10-231-0/+687
Add support to STM HTS221 humidity + temperature sensor http://www.st.com/resource/en/datasheet/hts221.pdf - continuous mode support - i2c support - spi support - trigger mode support Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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