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Commit 974e6f02 authored by Enric Balletbo i Serra's avatar Enric Balletbo i Serra Committed by Jonathan Cameron
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iio: cros_ec_sensors_core: Add common functions for the ChromeOS EC Sensor Hub. 



Add the core functions to be able to support the sensors attached behind
the ChromeOS Embedded Controller and used by other IIO cros-ec sensor
drivers.

The cros_ec_sensor_core driver matches with current driver in ChromeOS
4.4 tree, so it includes all the fixes at the moment. The support for
this driver was made by Gwendal Grignou. The original patch and all the
fixes has been squashed and rebased on top of mainline.

Signed-off-by: default avatarGwendal Grignou <gwendal@chromium.org>
Signed-off-by: default avatarGuenter Roeck <groeck@chromium.org>
[eballetbo: split, squash and rebase on top of mainline the patches
found in ChromeOS tree]
Signed-off-by: default avatarEnric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 1001354c

Documentation/ABI/testing/sysfs-bus-iio-cros-ec

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What:		/sys/bus/iio/devices/iio:deviceX/calibrate

Date:		July 2015

KernelVersion:	4.7

Contact:	linux-iio@vger.kernel.org

Description:

		Writing '1' will perform a FOC (Fast Online Calibration). The

                corresponding calibration offsets can be read from *_calibbias

                entries.



What:		/sys/bus/iio/devices/iio:deviceX/location

Date:		July 2015

KernelVersion:	4.7

Contact:	linux-iio@vger.kernel.org

Description:

		This attribute returns a string with the physical location where

                the motion sensor is placed. For example, in a laptop a motion

                sensor can be located on the base or on the lid. Current valid

		values are 'base' and 'lid'.

drivers/iio/common/Kconfig

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# IIO common modules

#



source "drivers/iio/common/cros_ec_sensors/Kconfig"

source "drivers/iio/common/hid-sensors/Kconfig"

source "drivers/iio/common/ms_sensors/Kconfig"

source "drivers/iio/common/ssp_sensors/Kconfig"

drivers/iio/common/Makefile

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#



# When adding new entries keep the list in alphabetical order

obj-y += cros_ec_sensors/

obj-y += hid-sensors/

obj-y += ms_sensors/

obj-y += ssp_sensors/

drivers/iio/common/cros_ec_sensors/Kconfig

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#

# Chrome OS Embedded Controller managed sensors library

#

config IIO_CROS_EC_SENSORS_CORE

	tristate "ChromeOS EC Sensors Core"

	depends on SYSFS && MFD_CROS_EC

	select IIO_BUFFER

	select IIO_TRIGGERED_BUFFER

	help

	  Base module for the ChromeOS EC Sensors module.

	  Contains core functions used by other IIO CrosEC sensor

	  drivers.

	  Define common attributes and sysfs interrupt handler.

drivers/iio/common/cros_ec_sensors/Makefile

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#

# Makefile for sensors seen through the ChromeOS EC sensor hub.

#



obj-$(CONFIG_IIO_CROS_EC_SENSORS_CORE) += cros_ec_sensors_core.o