Inputs And Sensors Domain Wiki

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(Upstreaming Sensors/ Input Drivers Discussion)
 
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* [[LED | LED]]
* [[LED | LED]]
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==Upstreaming Sensors/ Input Drivers Discussion==
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==Information about on-board data sensors on OMAP boards==
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*'''Background'''
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**Internal TI requirements mandate that several of the sensors like Accelerometer, Proximity, Digital compass support input subsystem. Others like Temperature, Pressure, Ambient light are listed as misc/hwmon subsystem.
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The following additional Sensors are mounted on [[OMAP4_Blaze]] platform.
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**There are also touchsceen, keypad drivers belonging to input subsystem to be upstreamed.
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  BMP085 Barometer sensor
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**Input subsystem is a highly active subsystem with large number of new requests, and is stable subsystem already in mainline.
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  CMA3000 Accelerometer
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**There has been general reluctance from input maitainer to accept sensor drivers into input subsystem. Sensors donot fall into the standard input categories, but could still be pushed as misc input devices.
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  TMP105 Temperature Sensor (not to be confused with the on-die temperature sensor)
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**The misc subsystem i.e "drivers/misc" doesnot have a defined maintainer
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  SHF7741 Proximity Sensor
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**There is a new subsystem IIO (Industrial I/O) in staging directory, specifically meant for sensors. This supports Accelerometers, ADCs (like pressure, temperature etc) light sensors etc.
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**This susbsytem is still evolving and undergoing major changes. It is also not sure when this subsystem will be supported in mainline.
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*'''Discussion points'''
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**Advantages of using input/misc subsystem
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***Already in mainline and stable.
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***Well defined path for upstreaming
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**Disadvantage of using input/misc susbsystem
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***No response from maintainer in including sensor drivers
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***Might need dedicated review time from maintainer
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**Advantage of using IIO subsystem
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***Maintainer ready to accept any new drivers
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***TI could have a role in shaping the new subsystem
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**Disadvantage of using IIO subsystem
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*** Not yet in mainline and also evolving
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*** Additional efforts required
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**Decide on the subsystem to be supported for upstreaming and also the approach to be taken.
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[[Category:Components]]
[[Category:Components]]

Latest revision as of 14:38, 10 August 2011

Welcome to the Inputs & Sensors domain wiki. This page provides detail information about different drivers covered under the Inputs & Sensors domain.

[edit] Links to Driver Wikis

[edit] Information about on-board data sensors on OMAP boards

The following additional Sensors are mounted on OMAP4_Blaze platform.
 BMP085 Barometer sensor
 CMA3000 Accelerometer
 TMP105 Temperature Sensor (not to be confused with the on-die temperature sensor)
 SHF7741 Proximity Sensor
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