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path: root/drivers/iio/magnetometer/st_magn_spi.c
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2023-01-08iio: magnetometer: st_magn: Add LSM303CStephan Gerhold1-0/+5
The magnetometer part of ST LSM303C is similar (perhaps even identical) to the already supported standalone LIS3MDL magnetometer, so just add the new st,lsm303c-magn compatible for the existing definitions. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20230106102239.9647-4-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-02-18iio:st-sensors: Move exports into IIO_ST_SENSORS namespaceJonathan Cameron1-0/+1
To avoid unnecessary pollution of the global symbol namespace move the driver core and type specific core exports into their a new namespace and import that where needed. For more info see https://lwn.net/Articles/760045/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Denis Ciocca <denis.ciocca@st.com> Link: https://lore.kernel.org/r/20220116180535.2367780-14-jic23@kernel.org
2021-09-14iio: st_sensors: remove all driver remove functionsAlexandru Ardelean1-10/+0
At this point all ST driver remove functions do iio_device_unregister(). This change removes them from them and replaces all iio_device_register() with devm_iio_device_register(). This can be done in a single change relatively easy, since all these remove functions are define in st_sensors.h. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210823112204.243255-5-aardelean@deviqon.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-09-14iio: st_sensors: remove st_sensors_power_disable() functionAlexandru Ardelean1-12/+1
This change converts the st_sensors_power_enable() function to use devm_add_action_or_reset() handlers to register regulator_disable hooks for when the drivers get unloaded. The parent device of the IIO device object is used. This is based on the assumption that all other devm_ calls in the ST sensors use this reference. This makes the st_sensors_power_disable() un-needed. Removing this also changes unload order a bit, as all ST drivers would call st_sensors_power_disable() first and iio_device_unregister() after that. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210823112204.243255-4-aardelean@deviqon.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-09-14iio: st_sensors: disable regulators after device unregistrationAlexandru Ardelean1-2/+2
Up until commit ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal to core") only the ST pressure driver seems to have had any regulator disable. After that commit, the regulator handling was moved into the common st_sensors logic. In all instances of this regulator handling, the regulators were disabled before unregistering the IIO device. This can cause issues where the device would be powered down and still be available to userspace, allowing it to send invalid/garbage data. This change moves the st_sensors_power_disable() after the common probe functions. These common probe functions also handle unregistering the IIO device. Fixes: 774487611c949 ("iio: pressure-core: st: Provide support for the Vdd power supply") Fixes: ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal to core") Cc: Lee Jones <lee.jones@linaro.org> Cc: Denis CIOCCA <denis.ciocca@st.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com> Link: https://lore.kernel.org/r/20210823112204.243255-2-aardelean@deviqon.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-07-24iio: st-sensors: Remove some unused includes and add some that should be thereJonathan Cameron1-1/+1
The st-sensors drivers have changed in structure over time, and includes have not always kept up with this. Let's bring them back to nearer the ideal. Identified with the include-what-you-use tool and careful checking of its suggestions. Note I haven't been particularly aggressive here, so this is just the cases where the include obviously isn't needed rather than the more subtle corners. Note I took the opportunity to add mod_devicetable.h as I generally prefer to see that when acpi or of match tables are present. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Denis Ciocca <denis.ciocca@st.com> Cc: Hans de Goede <hdegoede@redhat.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210608175149.4019289-1-jic23@kernel.org
2021-05-17iio: st_sensors: Call st_sensors_power_enable() from bus driversAndy Shevchenko1-1/+13
In case we would initialize two IIO devices from one physical device, we shouldn't have a clash on regulators. That's why move st_sensors_power_enable() call from core to bus drivers. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210414195454.84183-4-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-03-25iio:magnetometer: Add Support for ST IIS2MDCLI Qingwu1-0/+5
Add support for ST magnetometer IIS2MDC, an I2C/SPI interface 3-axis magnetometer. The patch was tested on the instrument with IIS2MDC via I2C interface. Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn> Link: https://lore.kernel.org/r/20210317063902.19300-3-Qing-wu.Li@leica-geosystems.com.cn Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-01-13iio: st_sensors: Make use of device propertiesAndy Shevchenko1-5/+1
Device property API allows to gather device resources from different sources, such as ACPI. Convert the drivers to unleash the power of device property API. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-01-13iio: st_sensors: Drop redundant parameter from st_sensors_of_name_probe()Andy Shevchenko1-2/+1
Since we have access to the struct device_driver and thus to the ID table, there is no need to supply special parameters to st_sensors_of_name_probe(). Besides that we have a common API to get driver match data, there is no need to do matching separately for OF and ACPI. Taking into consideration above, simplify the ST sensors code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: move 3-wire spi initialization to st_sensors_spiDenis Ciocca1-1/+3
Some devices need to be configured with special bit in order to use spi 3-wire. This was done during device identification phase. Instead, let's move this part as spi specific. Doing this the check_device_support function becomes a simple device id check, so let's rename it. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio:magn: device settings are set immediately during probeDenis Ciocca1-3/+13
This patch set magn settings right after probe start. This is done in preparation of regmap that needs different configuration based on multiread bit value. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177Thomas Gleixner1-2/+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>
2018-11-11iio:magnetometer: st_magn: add LSM9DS1 supportMartin Kelly1-0/+5
Update the sensor settings to support the LSM9DS1 sensor. Although the LSM9DS1 accelerometer and gyroscope are coupled together to use the same FIFO, the magnetometer is separate and can be cleanly supported without refactoring the existing driver. Signed-off-by: Martin Kelly <martin@martingkelly.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-11iio: magnetometer: add clarifying commentMartin Kelly1-0/+2
Add a comment clarifying better when to use <device_name> vs <device_name>-magn in compatibility strings. Signed-off-by: Martin Kelly <martin@martingkelly.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-17iio: magnetometer: add support to LIS2MDLLorenzo Bianconi1-0/+5
add support to STMicroelectronics LIS2MDL magnetometer in st_magn framework http://www.st.com/resource/en/datasheet/lis2mdl.pdf Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-07-02iio: magnetometer: st_magn_spi: add OF capability to st_magn_spiLorenzo Bianconi1-0/+25
Add device tree support for LIS3MDL and LSM303AGR magnetometer sensors Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-06-11iio: magnetometer: st_magn_spi: fix spi_device_id tableLorenzo Bianconi1-2/+0
Remove LSM303DLHC, LSM303DLM from st_magn_id_table since LSM303DL series does not support spi interface Fixes: 872e79add756 (iio: magn: Add STMicroelectronics magn driver) Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-28spi: Drop owner assignment from spi_driversAndrew F. Davis1-1/+0
An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-23iio: st-magn: add support for lsm303agr magnetometerGiuseppe Barba1-0/+1
This adds support for the lsm303agr magnetometer. Signed-off-by: Giuseppe Barba <giuseppe.barba@st.com> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04iio:common: Set the device pointer into ST common sensors libraryDenis CIOCCA1-1/+0
Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04iio:magnetometer: Removed unnecessary parameter on common_probe functionDenis CIOCCA1-1/+1
Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-03iio: magnetometer: st_magn: Use devm_iio_device_allocSachin Kamat1-11/+4
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-03iio: Added ST-sensors platform data to select the DRDY interrupt pinDenis CIOCCA1-1/+1
This patch add support to redirect the DRDY interrupt on INT1 or INT2 on accelerometer and pressure sensors. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-02-09iio:st_sensors fix build when !CONFIG_IIO_TRIGGERJonathan Cameron1-1/+0
Partly a case of removing unused headers and partly a case of ifdefing out the iio_trigger_ops structures. This has come about because of an 'unusual' separation of code in this driver. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Denis Ciocca <denis.ciocca@st.com>
2013-01-31iio:magnetometer: Add STMicroelectronics magnetometers driverDenis Ciocca1-0/+80
This patch adds a generic magnetometer driver for STMicroelectronics magnetometers, currently it supports: LSM303DLHC, LSM303DLM, LIS3MDL. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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