kernel/git/stable/linux.git/drivers/iio/accel, branch linux-4.20.y

iio: accel: kxcjk1013: Add KIOX010A ACPI Hardware-ID

2019-02-12T19:02:11+00:00

[ Upstream commit 7f6232e69539971cf9eaed07a6c14ab4a2361133 ] Various 2-in-1's use KIOX010A and KIOX020A as HIDs for 2 KXCJ91008 accelerometers. The KIOX010A HID is for the one in the base and the KIOX020A for the accelerometer in the keyboard. Since userspace does not have a way yet to deal with (or ignore) the accelerometer in the keyboard, this commit just adds the KIOX010A HID for now so that display rotation will work. Related: https://github.com/hadess/iio-sensor-proxy/issues/166 Signed-off-by: Hans de Goede Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers

2018-11-16T11:42:12+00:00

Before this commit sensor_hub_input_attr_get_raw_value() failed to take the signedness of 16 and 8 bit values into account, returning e.g. 65436 instead of -100 for the z-axis reading of an accelerometer. This commit adds a new is_signed parameter to the function and makes all callers pass the appropriate value for this. While at it, this commit also fixes up some neighboring lines where statements were needlessly split over 2 lines to improve readability. Signed-off-by: Hans de Goede Acked-by: Srinivas Pandruvada Acked-by: Benjamin Tissoires Cc: Signed-off-by: Jonathan Cameron

iio: adxl372: Add support for I2C communication

2018-09-08T14:54:38+00:00

The adxl372 is designed to communicate in either SPI or I2C protocol. It autodetects the format being used, requiring no configuration control to select the format. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio: adxl372: Refactor the driver

2018-09-08T14:28:27+00:00

This patch restructures the existing adxl372 driver by adding a module for SPI and a header file, while the baseline module deals with the chip-logic. This is a necessary step, as this driver should support in the future a similar device which differs only in the type of interface used (I2C instead of SPI). Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio:adxl372: Add filter bandwidth support

2018-08-25T08:19:33+00:00

This patch adds the option for the user to select the filter bandwidth. The user can also read the available bandwidths which are always adjusted to be at most half of the sampling frequency. Furthermore, the currently selected bandwidth can be read via the read_raw function, while the write_raw sets a new bandwidth value. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio:adxl372: Add sampling frequency support

2018-08-25T08:18:35+00:00

This patch adds the option for the user to select the sampling frequency. Also, the user can read the available frequencies and read the currently set frequency via the read_raw function. The frequency can be set via the write_raw function. When the frequency is set, the bandwidth is also checked and ensured that it is constrained to at most half of the sampling frequency. Also, the activity and inactivity timers have to be updated because they depend on the selected ODR. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio: adxl372: Provide validate_trigger and validate_device callbacks

2018-08-25T08:16:42+00:00

This patch provides a validate_device callback for the trigger which makes sure that other devices are rejected. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio: adxl345: move null check for i2c id at start of probe

2018-08-19T17:32:05+00:00

Fixes ef89f4b96a2 ("iio: adxl345: Add support for the ADXL375"). This was found via static checker. After looking into the code a bit, it's unlikely that there will be a NULL dereference if the `id` object in that specific code path. However, it's safe to add a NULL (paranoid) check just to make sure and remove any uncertainties. Reported-by: Dan Carpenter Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

iio:adxl372: Add FIFO and interrupts support

2018-08-19T17:13:02+00:00

This patch adds support for the adxl372 FIFO. In order to accomplish this, triggered buffers were used. The number of FIFO samples which trigger the watermark interrupt can be configured by using the buffer watermark. The FIFO format is determined by configuring the scan elements for each axis. The FIFO data is pushed to the IIO device's buffer. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio: adxl372: New driver for Analog Devices ADXL372 Accelerometer

2018-08-19T17:02:22+00:00

This patch adds basic support for Analog Devices ADXL372 SPI-Bus Three-Axis Digital Accelerometer. The device is probed and configured the with some initial default values. With this basic driver, it is possible to read raw acceleration data. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL372.pdf Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron