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path: root/drivers/iio/accel/mma8452.c
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* drivers:iio:accel:mma8452: removed unwanted return statementsBijosh Thykkoottathil2016-07-05
| | | | | | | | | Removed unwanted return statements from the function mma8452_set_freefall_mode. Signed-off-by: Bijosh Thykkoottathil <bijosh.t@hotmail.com> Acked-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* drivers:iio:accel:mma8452: added cleanup provision in case of failure.Bijosh Thykkoottathil2016-07-05
| | | | | | | | | | | mma8452_set_freefall_mode can return -ve value in case if i2c_smbus_read_byte_data fails. This function is called from mma8452_probe, and returning -ve value from probe indicates probe failure. Need to call iio_triggered_buffer_cleanup & iio_trigger_cleanup in this case. Signed-off-by: Bijosh Thykkoottathil <bijosh.t@hotmail.com> Acked-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:core: timestamping clock selection supportGregor Boirie2016-06-30
| | | | | | | | | | | | | | | 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: mma8452: update Freescale company informationMartin Kepplinger2016-06-11
| | | | | | | NXP took over Freescale, so add NXP to the driver descriptions Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: update device description in header commentsMartin Kepplinger2016-06-11
| | | | | Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: update contact information for Martin KepplingerMartin Kepplinger2016-06-11
| | | | | Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for oversampling ratioMartin Kepplinger2016-05-04
| | | | | | | | | | | | | | | | | | This adds the following sysfs files according to the iio ABI: -rw-r--r-- 4096 in_accel_oversampling_ratio -r--r--r-- 4096 in_accel_oversampling_ratio_available Internally, the device knows about 4 different power modes that differ in oversampling ratio (and power consumption). We just show the user what oversampling ratio(s) is/are available, depending on the current frequency. The referenced table in the datasheets makes it easier to understand. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: use runtime pm instead of device specific autosleepMartin Kepplinger2016-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | What is this autosleep? ----------------------- It slows down the device after x seconds of inactivity. The thing is, we have really achieved almost the same by runtime pm. differnces are: autosleep * uses more power during inactivity * the first read after inactivity slightly faster * complicated to understand for the user * no documented sysfs interface (afaik) * complicated to read and maintain runtime pm * already merged in mma8452 * uses less power during inactivity * first read after inactivity slower * easy to use. well documented. * easy to maintain and understand The two approaches solve the same problem. runtime pm has more advantages than autosleep and comes quite close to it's behaviour anyways. As I see it, autosleep, even if somehow supported, would never be used anyways. So resolve this issue by "ignoring" autosleep. Signed-off-by: Martin Kepplinger <martink@posteo.de> Reviewed-by: Martina Kepplinger <martina.novakovic@zoho.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add i2c_device_id for mma8451Martin Kepplinger2016-03-20
| | | | | | | This was forgotten about and is added for consistency now Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for FXLS8471QMartin Kepplinger2016-03-12
| | | | | | | | | | | | | | | | This adds support for Freescale's (now NXP's) FXLS8471Q accelerometer. We use MMA8451Q's configuration because for what the driver supports, FXLS8471Q is the same. Support for FXLS8471Q's features (fast SPI interface and a larger FIFO, among others) can be added to this driver anytime. See it's datasheet for the details: http://cache.nxp.com/files/sensors/doc/data_sheet/FXLS8471Q.pdf Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for runtime power managementMartin Kepplinger2016-03-05
| | | | | | | | | | | | | | This adds support for runtime power management and, if configured, activates automatic standby after 2 seconds of inactivity. Inactivity means no read of acceleration values and no events triggered or activated. If CONFIG_PM is not set, this doesn't change anything for existing users. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: avoid switching to active because of config changeMartin Kepplinger2016-03-05
| | | | | | | | | | | | | | | The devices' config registers can only be changed in standby mode. Up until now the driver just held the device *always* active, so for changing a config it was *always* necessary to switch to standby. For upcoming support for runtime pm, the device can as well be in standby mode. Instead of putting runtime pm functions in there, just keep the device in standby if it already is. This section is protected by a lock after all. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: coding style fixesMartin Kepplinger2016-03-05
| | | | | | | | fix checkpatch issues like "space before tabs", too long lines or alignment. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for MMA8451QMartin Kepplinger2016-01-23
| | | | | | | | | | | This adds support for this series' 14 bit accelerometer chip, MMA8451Q. It's datasheet is available at the vendor's website: https://cache.freescale.com/files/sensors/doc/data_sheet/MMA8451Q.pdf Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: whitespace cleanupMartin Kepplinger2016-01-23
| | | | | | Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add freefall detection for Freescale's accelerometersMartin Kepplinger2016-01-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds freefall event detection to the supported devices. It adds the in_accel_x&y&z_mag_falling_en iio event attribute, which activates freefall mode. In freefall mode, the current acceleration magnitude (AND combination of all axis values) is compared to the specified threshold. If it falls under the threshold (in_accel_mag_falling_value), the appropriate IIO event code is generated. This is what the sysfs "events" directory for these devices looks like after this change: -rw-r--r-- 4096 Oct 23 08:45 in_accel_mag_falling_period -rw-r--r-- 4096 Oct 23 08:45 in_accel_mag_falling_value -rw-r--r-- 4096 Oct 23 08:45 in_accel_mag_rising_period -rw-r--r-- 4096 Oct 23 08:45 in_accel_mag_rising_value -r--r--r-- 4096 Oct 23 08:45 in_accel_scale -rw-r--r-- 4096 Oct 23 08:45 in_accel_x&y&z_mag_falling_en -rw-r--r-- 4096 Oct 23 08:45 in_accel_x_mag_rising_en -rw-r--r-- 4096 Oct 23 08:45 in_accel_y_mag_rising_en -rw-r--r-- 4096 Oct 23 08:45 in_accel_z_mag_rising_en Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: use enum for channel indexMartin Kepplinger2015-12-19
| | | | | | | | This gets rid of some magic numbers by adding an enum. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: remove unused register descriptionMartin Kepplinger2015-12-19
| | | | | | Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: support either of the available interrupt pinsMartin Kepplinger2015-10-25
| | | | | | | | | | | | | | | | | | | | This change is important in order for everyone to be easily able to use the driver for one of the supported accelerometer chips! Until now, the driver blindly assumed that the INT1 interrupt line is wired on a user's board. But these devices have 2 interrupt lines and can route their interrupt sources to one of them. Now, if "INT2" is found and matches i2c_client->irq, INT2 will be used. The chip's default actually is INT2, which is why probably many boards will have it wired and can make use of this. Of course, this also falls back to assuming INT1, so for existing users nothing will break. The new functionality is described in the bindings doc. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> For the binding: Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: leave sysfs namings to the iio coreMartin Kepplinger2015-09-23
| | | | | | | | | | This doesn't actually change anything since the core names the sysfs folder for the iio event attributes "events" anyways. It only leaves the job to the core. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add copyright notice commentMartin Kepplinger2015-09-23
| | | | | | Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for MMA8652FC and MMA8653FCMartin Kepplinger2015-09-23
| | | | | | | | | | | | | | | | MMA8652FC and MMA8653FC don't provide the transient interrupt source, so the motion interrupt source is used by providing a new iio_chan_spec definition, so that other supported devices are not affected by this. Datasheets for the newly supported devices are available at Freescale's website: http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8652FC.pdf http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8653FC.pdf Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add freefall / motion interrupt sourceMartin Kepplinger2015-09-23
| | | | | | | | | | This adds the freefall / motion interrupt source definitions to the driver. It is used in this series' next patch, for chips that don't support the transient interrupt source. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: add support for MMA8453Q accelerometer chipMartin Kepplinger2015-09-23
| | | | | | | | | | | | | | This adds support for the 10 bit version if Freescale's accelerometers of this series. The datasheet is available at Freescale's website: http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8453Q.pdf It creates a devicetree bindings file to document the new functionality and removes the driver from the trivial-devices list. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: refactor for seperating chip specific dataMartin Kepplinger2015-09-23
| | | | | | | | | | | | | This adds a struct mma_chip_info to hold data that will remain specific to the chip in use. It is provided during probe() and linked in struct of_device_id. Also this suggests that the driver is called "mma8452" and now handles the MMA8452Q device, but is not limited to it. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* Merge tag 'iio-for-4.3b-2' of ↵Greg Kroah-Hartman2015-08-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of new device support, features and cleanup for the 4.3 cycle. Take 2 also includes a fix set that was too late for the 4.2 cycle. As we had a lot of tools and docs work in this set, I have broken those out into their own categories in this description. Fixes from the pull request '4th set of IIO fixes for the 4.2 cycle'. * Poll functions for both event chardev and the buffer one were returning negative error codes (via a positive value). * A recent change to lsiio adding some error handling that was wrong and stopped the tool working. * bmg160 was missing some dependencies in Kconfig * berlin2-adc had a misshandled register (wrote a value rather than a bitmap) New device support * TI opt3001 light sensor * TXC PA12 ALS and proximity sensor. * mcp3301 ADC support (in mcp320x driver) * ST lsm303agr accelerometer and magnetometer drivers (plus some st-sensors common support to allow different WHOAMI register addresses, devices with fixed scale and allow interrupt equiped magnetometers). * ADIS16305, ADIS16367, ADIS16445IMUs (in the adis16400 driver) * ADIS16266 gyro (in the adis16260 driver) * ADIS16137 gyro (in the adis16136 driver) New functionality * mmc35240 DT bindings. * Inverse unit conversion macros to aid handing of values written to sysfs attributes. Core cleanup * Forward declaration of struct iio_trigger to avoid a compile warning. Driver cleanup / fixes * mxs-lradc - Clarify which parts are supported. - Fix spelling erorrs. - Missing/extra includes - reorder includes - add datasheet name listings for all usable channels (to allow them to be bound by name from consumer drivers) * acpi-als - add some function prefixes as per general iio style. * bmc150_magn - replace a magic value with the existing define. * vf610 - determine possible sample frequencies taking into account the electrical characteristics (defining a minimum sample time) * dht11 - whitespace - additional docs - avoid mulitple assignments in one line - Use the new funciton ktime_get_resolution_ns to cleanup a nasty trick previously used for timing. * Fix all drivers that consider 0 a valid IRQ for historical reasons. * Export I2C module alias info where previously missing (to allow autoprobing) * Export OF module alias info where previously missing. * mmc35240 - switch some variables into arrays to improve readability. * mlx90614 - define some magic numbers for readability. * bmc150_magn - expand area locked by a mutex to cover all the use of the data->buffer. - use descriptive naming for a mask instead of a magic value. * berin2-adc - pass up an error code rather that a generic error - constify the iio_chan_spec - some other little tidy ups. * stk8312 - fix a dependency on triggered buffers in kconfig - add a check for invalid attribute values - improve error handling by returning error codes where possible and return immediately where relevant - rework macro defs to use GENMASK etc - change some variable types to reduce unnecessary casting - clean up code style - drop a local buffer copy for bulk reads and use the one in data->buffer instead. * adis16400 - the adis16448 gyroscope scale was wrong. * adis16480 - some more wrong scales for various parts. * adis16300 - has an undocumented product id and serial number registers so use them. * iio_simple_dummy - fix some wrong code indentation. * bmc150-accel - use the chip ID to detect the chip present rather than verifying the expected part was there. This was in response to a wrong ACPI entry on the WinBook TW100. * mma8452 - fix _get_hp_filter_index - drop a double include - pass up an error code rather than rewriting it - range check input values to attribute writes - register defs tidy up using GENMASK and reordering them to be easier to follow. - various coding style cleanups - put the Kconfig entry in the write place (alphabetically). Tools related * Tools cleanup - drop an explicity NULL comparison, some unnecessary braces, use the ARRAY_SIZE macro, send error messages to stderr instead of dropping them in the middle of normal output. * Fix tools to allow that scale and offset attributes are optional. * More tools fixes including allowing true 32bit data (previously an overflow prevented more than 31bits) * Drop a stray header guard that ended up in a c file. * Make calc_digits static as it isn't exported or in the header. * Set ci_array pointer to NULL after free as a protection against non safe usage of the tools core code. Also convert a double pointer to a single one as the extra level of indirection was unnecessary. Docs * DocBook introduction by Daniel Baluta. Glad we are beginning to draw together some more introductory docs to suplement the various tools / examples. * Drop bytes_per_datum sysfs attribute docs as it no longer exists. * A whole load of missing / fixing of kernel-doc for the core of IIO. * Document the trigger name sysfs attribute in the ABI docs. * Minor typos in the ABI docs related to power down modes.
| * iio:accel:mma8452: coding style cleanupHartmut Knaack2015-08-08
| | | | | | | | | | | | | | | | | | | | Some coding style cleanups, mainly indicated by checkpatch.pl, which includes indentation changes, drop spaces after casts and befor tabs. Also insert empty lines after logical blocks and before unconditional returns. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio:accel:mma8452: rework register definitionsHartmut Knaack2015-08-08
| | | | | | | | | | | | | | | | | | Rework register definitions to be sorted by register and bit number, with bit definitions cascaded under the appropriate register, use GENMASK for consecutive bitmasks and realign properly. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio:accel:mma8452: check values to be writtenHartmut Knaack2015-08-08
| | | | | | | | | | | | | | Check values to be written to the device for valid lower and upper bounds. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio:accel:mma8452: pass up real error codeHartmut Knaack2015-08-08
| | | | | | | | | | | | | | Pass up the error code provided by functions. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio:accel:mma8452: drop double includeHartmut Knaack2015-08-08
| | | | | | | | | | | | | | | | One inclusion of linux/iio/trigger_consumer.h is sufficient. Fixes: ae6d9ce05691b ("iio: mma8452: Add support for interrupt driven triggers.") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio:accel:mma8452: fix _get_hp_filter_indexHartmut Knaack2015-08-08
| | | | | | | | | | | | | | | | | | | | | | To iterate through the available frequencies of mma8452_hp_filter_cutoff[], the array size of a row of that table needs to be provided to _get_int_plus_micros_index(). Fixes: 1e79841a00e46 ("iio: mma8452: Add highpass filter configuration.") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: Export OF module alias information in missing driversJavier Martinez Canillas2015-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The I2C core always reports the MODALIAS uevent as "i2c:<client name" regardless if the driver was matched using the I2C id_table or the of_match_table. So technically there's no need for a driver to export the OF table since currently it's not used. In fact, the I2C device ID table is mandatory for I2C drivers since a i2c_device_id is passed to the driver's probe function even if the I2C core used the OF table to match the driver. And since the I2C core uses different tables, OF-only drivers needs to have duplicated data that has to be kept in sync and also the dev node compatible manufacturer prefix is stripped when reporting the MODALIAS. To avoid the above, the I2C core behavior may be changed in the future to not require an I2C device table for OF-only drivers and report the OF module alias. So, it's better to also export the OF table to prevent breaking module autoloading if that happens. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* | iio: mma8452: use iio event type IIO_EV_TYPE_MAGMartin Kepplinger2015-07-19
|/ | | | | | | | | | | | | | | IIO_EV_TYPE_THRESH in rising direction describes an event where the threshold is crossed in rising direction, positive or negative values being possible. This is not the case here. Since the threshold is no signed value and only the magnitude is compared, IIO_EV_TYPE_MAG is what describes the behaviour of these devices, see the sysfs-bus-iio ABI Documentation. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Add support for interrupt driven triggers.Martin Fuzzey2015-06-07
| | | | | | | | Implement interrupt driven trigger for data ready. This allows more efficient access to the sample data. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Add highpass filter configuration.Martin Fuzzey2015-06-07
| | | | | | | Allow the cutoff frequency of the high pass filter to be configured. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Add support for transient event debouncingMartin Fuzzey2015-06-07
| | | | | | | | Allow the debouce counter for transient events to be configured using the sysfs attribute events/in_accel_thresh_rising_period Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Basic support for transient events.Martin Fuzzey2015-06-07
| | | | | | | | The event is triggered when the highpass filtered absolute acceleration exceeds the threshold. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Add access to registers via DebugFSMartin Fuzzey2015-05-17
| | | | | Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: Initialise before activatingMartin Fuzzey2015-05-17
| | | | | | | | | | | | | | Many of the hardware configuration registers may only be modified while the device is inactive. Currently the probe code first activates the device and then modifies the registers (eg to set the scale). This doesn't actually work but is not noticed since the scale used is the default value. While at it also issue a hardware reset command at probe time. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: accel: mma8452: Remove trailing whitespaceRoberta Dobrescu2015-01-01
| | | | | | | | This patch fixes the following checkpatch.pl error: ERROR: trailing whitespace Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* Merge tag 'staging-3.17-rc1' of ↵Linus Torvalds2014-08-04
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver updates from Greg KH: "Here's the big pull request for the staging driver tree for 3.17-rc1. Lots of things in here, over 2000 patches, but the best part is this: 1480 files changed, 39070 insertions(+), 254659 deletions(-) Thanks to the great work of Kristina Martšenko, 14 different staging drivers have been removed from the tree as they were obsolete and no one was willing to work on cleaning them up. Other than the driver removals, loads of cleanups are in here (comedi, lustre, etc.) as well as the usual IIO driver updates and additions. All of this has been in the linux-next tree for a while" * tag 'staging-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (2199 commits) staging: comedi: addi_apci_1564: remove diagnostic interrupt support code staging: comedi: addi_apci_1564: add subdevice to check diagnostic status staging: wlan-ng: coding style problem fix staging: wlan-ng: fixing coding style problems staging: comedi: ii_pci20kc: request and ioremap memory staging: lustre: bitwise vs logical typo staging: dgnc: Remove unneeded dgnc_trace.c and dgnc_trace.h staging: dgnc: rephrase comment staging: comedi: ni_tio: remove some dead code staging: rtl8723au: Fix static symbol sparse warning staging: rtl8723au: usb_dvobj_init(): Remove unused variable 'pdev_desc' staging: rtl8723au: Do not duplicate kernel provided USB macros staging: rtl8723au: Remove never set struct pwrctrl_priv.bHWPowerdown staging: rtl8723au: Remove two never set variables staging: rtl8723au: RSSI_test is never set staging:r8190: coding style: Fixed checkpatch reported Error staging:r8180: coding style: Fixed too long lines staging:r8180: coding style: Fixed commenting style staging: lustre: ptlrpc: lproc_ptlrpc.c - fix dereferenceing user space buffer staging: lustre: ldlm: ldlm_resource.c - fix dereferenceing user space buffer ...
| * iio: mma8452: add DT supportMartin Fuzzey2014-07-13
| | | | | | | | | | | | | | | | | | | | Allow the mma8452 to be described in the device tree. Since no device specific binding attributes exist the trivial I2C binding is sufficient to describe the compatible string. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* | iio: mma8452: Use correct acceleration units.Martin Fuzzey2014-07-12
|/ | | | | | | | | | | | | | | The userspace interface for acceleration sensors is documented as using m/s^2 units [Documentation/ABI/testing/sysfs-bus-iio] The fullscale raw value for the mma8452 (-2048) corresponds to -2G, -4G or -8G depending on the seleted mode. The scale table was converting to G rather than m/s^2. Change the scaling table to match the documented interface. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: stable@vger.kernel.org
* iio: Add Freescale MMA8452Q 3-axis accelerometer driverPeter Meerwald2014-05-03
3-axis accelerometer sensor (2/4/8 g) with 12-bit resolution and I2C interface many extra features are unsupported (freefall detection, orientation change, autosleep) datasheet is here: http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8452Q.pdf v2: (thanks to Jonathan Cameron) * use ARRAY_SIZE() Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-07 03:31:47 -0400