Commit Graph

31 Commits

Author SHA1 Message Date
Ooi, Joyce 6f771d0b33 iio: magnetometer: separate the values of attributes based on their usage type for HID compass sensor
There are 2 usage types (Magnetic Flux and Heading data field) for HID
compass sensor, thus the values of offset, scale, and sensitivity should
be separated according to their respective usage type. The changes made
are as below:
1. Hysteresis: A struct hid_sensor_common rot_attributes is created in
struct magn_3d_state to contain the sensitivity for IIO_ROT.
2. Scale: scale_pre_decml and scale_post_decml are separated for IIO_MAGN
and IIO_ROT.
3. Offset: Same as scale, value_offset is separated for IIO_MAGN and
IIO_ROT.

For sensitivity, HID_USAGE_SENSOR_ORIENT_MAGN_FLUX and
HID_USAGE_SENSOR_ORIENT_MAGN_HEADING are used for sensivitity fields based
on the HID Sensor Usages specifications. Hence, these changes are added on
the sensitivity field.

Signed-off-by: Ooi, Joyce <joyce.ooi@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-24 20:41:30 +00:00
Krzysztof Kozlowski df5e94b482 iio: hid-sensor-magn-3d: Constify platform_device_id
The platform_device_id is not modified by the driver and core uses it as
const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-05-10 20:31:47 +01:00
Jiri Kosina 2e455c27bd Merge branch 'for-4.1/sensor-hub' into for-linus
Conflicts:
	drivers/iio/common/hid-sensors/hid-sensor-trigger.c
	include/linux/hid-sensor-hub.h
2015-04-13 23:43:34 +02:00
Srinivas Pandruvada b3f4737d00 HID: hid-sensor-hub: Extend API for async reads
Add additional flag to read in async mode. In this mode the caller will get
reply via registered callback for capture_sample. Callbacks can be registered
using sensor_hub_register_callback function. The usage id parameter of the
capture_sample can be matched with the usage id of the requested attribute.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-02-23 15:16:37 +01:00
Srinivas Pandruvada 0ef809cf99 iio: hid-sensor-magn-3d: Introduce PM
Use common hid sensor iio pm functions. Also the poll time read and
wait is part of power up function of hid sensor iio pm function, so
remove from the client drivers.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-25 22:55:53 +00:00
Sanjeev Sharma 81816affea iio: remove .owner field for driver using module_platform_driver
This patch removes the .owner field for drivers which use the
platform_driver_register api because this is overriden in
_platform_driver_register.

Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-26 21:08:38 +01:00
Reyad Attiyat 03d795589d iio: hid-sensor-magn-3d: Fix build warning
Fix build warning, sizeof() called on dynamically
sized pointer, by removing the call and the dependent
function parameter. It is not needed or used in this
driver, when pushing values to an iio buffer.

Changes from v1
- Fix mistake in varible name

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-27 14:16:29 +01:00
Greg Kroah-Hartman 040bf7d63d Fourth round of IIO new drivers, functionality and cleanups for the 3.17 cycle
New functionality
 * A new modifier to indicate that a rotation is relative to either
   true or magnetic north.  This is to be used by some magnetometers
   that provide data in this way.
 * hid magnetometer now supports output rotations from various variants on
   North
 * HMC5843 driver converted to regmap and reworked to allow easy support
   of other similar devices.  Support for HMC5983 added via both i2c and SPI.
 * Rework of Exynos driver to simplify extension to support more devices.
 * Addition of support for the Exynos3250 ADC (which requires an additional
   clock)  Support for quite a few more devices on its way.
 
 Cleanups
 * ad7997 - a number of cleanups and tweaks to how the events are controlled
   to make it more intuitive.
 * kxcjk - cleanups and minor fixes for this new driver.
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Merge tag 'iio-for-3.17d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Fourth round of IIO new drivers, functionality and cleanups for the 3.17 cycle

New functionality
* A new modifier to indicate that a rotation is relative to either
  true or magnetic north.  This is to be used by some magnetometers
  that provide data in this way.
* hid magnetometer now supports output rotations from various variants on
  North
* HMC5843 driver converted to regmap and reworked to allow easy support
  of other similar devices.  Support for HMC5983 added via both i2c and SPI.
* Rework of Exynos driver to simplify extension to support more devices.
* Addition of support for the Exynos3250 ADC (which requires an additional
  clock)  Support for quite a few more devices on its way.

Cleanups
* ad7997 - a number of cleanups and tweaks to how the events are controlled
  to make it more intuitive.
* kxcjk - cleanups and minor fixes for this new driver.
2014-07-24 14:57:19 -07:00
Reyad Attiyat abea9c62c3 iio: hid-sensor-magn-3d: Add support for rotation from north
Add the HID usage attribute ID's and IIO channel info for rotation
from north support.

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 13:39:35 +01:00
Reyad Attiyat 2a96540a5c iio: hid-sensor-magn-3d: Scan for usage attributes before setting up iio channels
Scan for and count the HID usage attributes supported by the driver.
This allows for the driver to only setup the IIO channels for the
sensor usages present in the HID USB reports.

Changes from v5
-Fixed kernel panic from invalid pointer dereference
-Fixed variable assignment style

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 13:37:52 +01:00
Sachin Kamat 5f25b41f7e iio: hid-sensor-magn-3d: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:07:12 +01:00
Srinivas Pandruvada 8009c594a5 iio: hid-sensors: Compass 3D: Raw read support
Added support for raw reading of channel. If the sensor is powered
off, it will turn on for reading value

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:52 +01:00
Srinivas Pandruvada 56ff6be608 iio: hid-sensors: Add API to power on/off
Added an API to allow client drivers to turn ON and OFF sensors for
quick read. Added data_read as counting varaible instead of boolean,
so that sensor is powered off only when last user released it.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:49 +01:00
Srinivas Pandruvada 92463fdab5 iio: hid-sensors: Compass 3D: adjust scale and offset
Using units and unit exponent to calculate scale which is compliant
to IIO ABI.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:47 +01:00
Greg Kroah-Hartman 06749f192b Merge v3.13-rc2 into staging-next
we want these fixes in here.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-02 16:39:07 -08:00
Srinivas Pandruvada 2461fc9f3f iio: hid-sensors: magnetometer : Add sensitivity
A number of Properties that can be applied to Data Fields are per data
field basis or for all data fields. Adding sensitivity field for all
magnetometer fields, which is most commonly used in currently available
sensor hubs.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-11-09 13:51:23 +00:00
Srinivas Pandruvada ec7f68e07b iio: hid_Sensors: fix crash during trigger unregister
We can't store the trigger instance created by iio_trigger_alloc, in
trig field of iio_device structure. This needs to be stored in the
driver private data. Othewise it can result in crash during module
unload. Hence created a trig_ptr in the common data structure
for each HID sensor IIO driver and storing here.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-11-02 19:07:06 +00:00
Lars-Peter Clausen 8c60c7e75d iio: Remove unnecessary casts for iio_push_to_buffers()
Now that iio_push_to_buffers() takes a void pointer for the data parameter we
can remove those casts to u8*.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-15 19:05:07 +01:00
Peter Meerwald 0c0427acd5 iio: Remove unnecessary _write_raw_get_fmt() in several hid-sensor drivers
IIO_VAL_INT_PLUS_MICRO is the default, no need to return it explicitly

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19 20:01:25 +01:00
Sachin Kamat 907c0a0ae0 iio: magnetometer: hid-sensor-magn-3d: Use devm_iio_device_alloc
Using devm_iio_device_alloc makes code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-03 18:43:14 +01:00
Alexander Holler a67c385a2e iio: hid-sensor-magn-3d: add module alias for autoload
Add a MODULE_DEVICE_TABLE in order to let hotplug mechanisms automatically
load the driver.

This makes it also possible to use the usual driver name instead of
HID-SENSOR-2000xx which isn't very descriptive in kernel messages.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by:Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-03 18:40:35 +01:00
Jonathan Cameron ecbe18f2c3 iio:hid_sensors move to info_mask_(shared_by_type/separate)
The original info_mask is going away in favour of the broken out versions.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-03-17 19:49:18 +00:00
Greg Kroah-Hartman 8f5f90a872 Merge 3.8-rc5 into staging-next
This resolves a merge issue with a iio driver, and the zram code.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-25 21:25:02 -08:00
Alexander Holler e07c6d170c hid: iio: rename struct hid_sensor_iio_common to hid_sensor_common
The structure with common attributes for hid-sensors isn't specific
to the iio-subsystem, so rename it to hid_sensor_common.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-01-06 11:48:11 +00:00
Alexander Holler 2974cdf293 iio: merge hid-sensor-attributes.h into hid-sensor-hub.h
The stuff in hid-sensor-attributes.h is needed by every piece which
uses hid-sensor-hub and merging it into hid-sensor-hub.h makes it accessible
from outside the iio subdirectory.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-01-06 11:43:37 +00:00
Greg Kroah-Hartman fc52692c49 Drivers: iio: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, and __devexit
from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:03 -08:00
Axel Lin 64ebe955f9 iio: hid-sensor: Return proper error if kmemdup fails
Return -ENOMEM instead of 0 if kmemdup fails.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-11-17 10:17:28 +00:00
Jonathan Cameron 84b36ce5f7 staging:iio: Add support for multiple buffers
Route all buffer writes through the demux.
Addition or removal of a buffer results in tear down and
setup of all the buffers for a given device.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Tested-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
2012-11-10 10:17:21 +00:00
Lars-Peter Clausen ce56ade6ae iio: Drop timestamp parameter from buffer store_to callback
Drop timestamp parameter from buffer store_to callback and subsequently from
iio_push_to_buffer. The timestamp parameter is unused and it seems likely that
it will stay unused in the future, so it should be safe to remove it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-09-08 10:14:34 +01:00
Jonathan Cameron a0d7bf7dd1 staging:iio: hid-sensors Use iio_push_to_buffer
Consistently use iio_push_to_buffer instead of manually calling the buffers
store_to callback.

These crossed with Lars-Peter's patch set doing every other case.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
2012-09-07 19:09:20 +01:00
srinivas pandruvada bc1d57ba06 iio: hid-sensors: Added Compass/Magnetometer 3D
Added usage id processing for Compass 3D. This uses IIO
interfaces for triggered buffer to present data to user
mode.This uses HID sensor framework for registering callback
events from the sensor hub.

Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-09-06 19:22:32 +01:00