user/sven/linux.git/include/linux/iio, branch v4.4.159

iio:buffer: make length types match kfifo types

2018-07-03T09:21:30Z

commit c043ec1ca5baae63726aae32abbe003192bc6eec upstream. Currently, we use int for buffer length and bytes_per_datum. However, kfifo uses unsigned int for length and size_t for element size. We need to make sure these matches or we will have bugs related to overflow (in the range between INT_MAX and UINT_MAX for length, for example). In addition, set_bytes_per_datum uses size_t while bytes_per_datum is an int, which would cause bugs for large values of bytes_per_datum. Change buffer length to use unsigned int and bytes_per_datum to use size_t. Signed-off-by: Martin Kelly Cc: Signed-off-by: Jonathan Cameron [bwh: Backported to 4.4: - Drop change to iio_dma_buffer_set_length() - Adjust filename, context] Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman

iio: ad_sigma_delta: Implement a dedicated reset function

2017-10-12T09:27:34Z

commit 7fc10de8d49a748c476532c9d8e8fe19e548dd67 upstream. Since most of the SD ADCs have the option of reseting the serial interface by sending a number of SCLKs with CS = 0 and DIN = 1, a dedicated function that can do this is usefull. Needed for the patch: iio: ad7793: Fix the serial interface reset Signed-off-by: Dragos Bogdan Acked-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: Support triggered events

2015-08-27T19:47:09Z

Support triggered events. This is useful for chips that don't have their own interrupt sources. It allows to use generic/standalone iio triggers for those drivers. Signed-off-by: Vladimir Barinov Signed-off-by: Jonathan Cameron

iio: st_sensors: add debugfs register read hook

2015-08-16T09:51:25Z

This adds a debugfs hook to read/write registers in the ST sensors using debugfs. Proved to be awesome help when trying to debug why IRQs do not arrive. Signed-off-by: Linus Walleij Acked-by: Denis Ciocca Signed-off-by: Jonathan Cameron

iio: Add inverse unit conversion macros

2015-08-08T11:50:40Z

Add inverse unit conversion macro to convert from standard IIO units to units that might be used by some devices. Those are useful in combination with scale factors that are specified as IIO_VAL_FRACTIONAL. Typically the denominator for those specifications will contain the maximum raw value the sensor will generate and the numerator the value it maps to in a specific unit. Sometimes datasheets specify those in different units than the standard IIO units (e.g. degree/s instead of rad/s) and so we need to do a unit conversion. From a mathematical point of view it does not make a difference whether we apply the unit conversion to the numerator or the inverse unit conversion to the denominator since (x / y) / z = x / (y * z). But as the denominator is typically a larger value and we are rounding both the numerator and denominator to integer values using the later method gives us a better precision (E.g. the relative error is smaller if we round 8000.3 to 8000 rather than rounding 8.3 to 8). This is where in inverse unit conversion macros will be used. Marked for stable as used by some upcoming fixes. Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron

iio: declare struct to fix warning

2015-08-08T11:28:46Z

When compile iio related driver the following warning shown: include/linux/iio/trigger.h:35:34: warning: 'struct iio_trigger' declared inside parameter list int (*set_trigger_state)(struct iio_trigger *trig, bool state); include/linux/iio/trigger.h:38:18: warning: 'struct iio_dev' declared inside parameter list struct iio_dev *indio_dev); 'struct iio_dev' and 'struct iio_trigger' was used before declaration, forward declaration for these structs to fix warning. Signed-off-by: Pengyu Ma Acked-by: Daniel Baluta Signed-off-by: Jonathan Cameron

include: linux: iio: Add missing kernel doc field

2015-08-02T17:36:05Z

Fix kernel doc for the iio_dev_attr structure by adding its missing field. Signed-off-by: Cristina Opriceana Signed-off-by: Jonathan Cameron

include: linux: iio: Fix function parameter name in kernel doc

2015-08-02T17:34:18Z

Fix buffer name from kernel doc according to the function parameter. Signed-off-by: Cristina Opriceana Signed-off-by: Jonathan Cameron

iio: st-sensors: add configuration for WhoAmI address

2015-07-23T19:43:04Z

This patch permits to configure the WhoAmI register address because some device could have not a standard address for this register. Signed-off-by: Giuseppe Barba Reviewed-by: Denis Ciocca Acked-by: Denis Ciocca Signed-off-by: Jonathan Cameron

iio: Fix parameters in iio_triggered_buffer_setup

2015-07-05T14:19:50Z

This patch renames the top half handler and the bottom half handler of iio_triggered_buffer_setup() in accordance with their usage. The bottom half has been renamed to reflect the fact that it is a thread based call, compliant with iio_alloc_pollfunc(). The names of the parameters were swapped, thus creating confusion. Signed-off-by: Cristina Opriceana Signed-off-by: Jonathan Cameron