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path: root/drivers/iio/common/st_sensors/st_sensors_spi.c
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2022-02-18iio:st-sensors: Move exports into IIO_ST_SENSORS namespaceJonathan Cameron
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 reference to parent device object on st_sensor_dataAlexandru Ardelean
The idea behind it, is that all devm_ calls in ST sensors are bound to the parent device object. However, the reference to that object is kept on both the st_sensor_data struct and the IIO object parent (indio_dev->dev.parent). This change only adds a bit consistency and uses the reference stored on indio_dev->dev.parent, to enforce the assumption that all ST sensors' devm_ calls are bound to the same reference as the one store on st_sensor_data. 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/20210823112204.243255-6-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 Cameron
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
2020-06-14iio: remove left-over parent assignmentsAlexandru Ardelean
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>
2020-03-21iio: st_sensors: Drop unneeded casting when print error codeAndy Shevchenko
Explicit casting in printf() usually shows that something is not okay. Here, we really don't need it by providing correct specifier. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-03-21iio: st_sensors: Use dev_get_platdata() to get platform_dataAndy Shevchenko
Use dev_get_platdata() to get the platform_data instead of referencing it directly. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-01-13iio: st_sensors: Make use of device propertiesAndy Shevchenko
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>
2019-08-05iio: remove get_irq_data_ready() function pointer and use IRQ number directlyDenis Ciocca
Not even sure why it was there since the beginning. Just use IRQ number in the sensor_data struct. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: make st_sensors drivers use regmapDenis Ciocca
This patch is meant to replace the i2c/spi transfer functions with regmap. SPI framework requires DMA safe buffers so let's add GFP_DMA flag for memory allocation used by bulk_read functions. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: move 3-wire spi initialization to st_sensors_spiDenis Ciocca
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>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177Thomas Gleixner
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>
2014-12-12iio: common: remove unnecessary sizeof(u8)Fabian Frederick
sizeof(u8) is always 1. Signed-off-by: Fabian Frederick <fabf@skynet.be> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04iio:common: Set the device pointer into ST common sensors libraryDenis CIOCCA
Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-03-16iio:common: Use spi_sync_transfer() in STMicroelectronics common libraryDenis Ciocca
Use the new spi_sync_transfer() helper function instead of open-coding it. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-01-31iio:common: Add STMicroelectronics common libraryDenis Ciocca
This patch add a generic library for STMicroelectronics 3-axis sensors. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>