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authorIrina Tirdea <irina.tirdea@intel.com>2014-11-10 14:45:32 +0200
committerJonathan Cameron <jic23@kernel.org>2014-11-22 11:05:51 +0000
commita88bfe78583026eb9f21d4014ba481b22b66cee3 (patch)
tree5aab15a95c90caa83a08595a3353e779046a2905 /include/linux/iio
parent1843c2f3def16740eb6d129a9790c32dd21aa5ea (diff)
downloadblackbird-op-linux-a88bfe78583026eb9f21d4014ba481b22b66cee3.tar.gz
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iio: core: Introduce STEPS channel, ENABLE mask and INSTANCE event
These changes are needed to support the functionality of a pedometer. A pedometer has two basic functionalities: step counter and step detector. The step counter needs to be enabled and then it will count the steps in its hardware register. Whenever the application needs to check the step count, it will read the step counter register. To support the step counter a new channel type STEPS is added. Since the pedometer needs to be enabled first so that the hardware can count and store the steps, we need a specific ENABLE channel info mask. The step detector will generate an interrupt each time a step is detected. To support this functionality we add a new event type INSTANCE. For more information on the Android requirements for step counter and step detector see: http://source.android.com/devices/sensors/composite_sensors.html#counter and http://source.android.com/devices/sensors/composite_sensors.html#detector. A device that has the pedometer functionality this interface needs to support is Freescale's MMA9553L: http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio')
-rw-r--r--include/linux/iio/iio.h1
-rw-r--r--include/linux/iio/types.h2
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 3642ce7ef512..f45a400a5e3e 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -38,6 +38,7 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_HARDWAREGAIN,
IIO_CHAN_INFO_HYSTERESIS,
IIO_CHAN_INFO_INT_TIME,
+ IIO_CHAN_INFO_ENABLE,
};
enum iio_shared_by {
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 52cb5329407b..904dcbbf0e6f 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -31,6 +31,7 @@ enum iio_chan_type {
IIO_PRESSURE,
IIO_HUMIDITYRELATIVE,
IIO_ACTIVITY,
+ IIO_STEPS,
};
enum iio_modifier {
@@ -73,6 +74,7 @@ enum iio_event_type {
IIO_EV_TYPE_ROC,
IIO_EV_TYPE_THRESH_ADAPTIVE,
IIO_EV_TYPE_MAG_ADAPTIVE,
+ IIO_EV_TYPE_INSTANCE,
};
enum iio_event_info {
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