gpio-presence: Pass drivers in to application

With the optional --drivers argument, pass in the
path/device pairs to bind/unbind. That string will be parsed,
and then passed into the Presence class

gpio-presence: Pass drivers in to application

With the optional --drivers argument, pass in the
path/device pairs to bind/unbind. That string will be parsed,
and then passed into the Presence class.

Change-Id: I1ac0e005de673a679dcb45e93bcac35fddf24d01
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

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gpio-presence: Add function to bind/unbind drivers

The cards that this app is doing presence detection for
may have devices with drivers that need to be bound and
unbound when the card is added and

gpio-presence: Add function to bind/unbind drivers

The cards that this app is doing presence detection for
may have devices with drivers that need to be bound and
unbound when the card is added and removed, respectively.

The drivers to do this to will be passed into the app
on startup (in a future commit). Then when presence detect
changes the proper binds/unbinds will be done.

This commit adds the code in the Presence class to do so.

Change-Id: I32827e45b88ddb7586aba6b819cc591b49aa9c51
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

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Fix test/Makefile.am format

Change-Id: I9448382ccddd0307d20ad52b0d1a5a108b092906
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

Fix Makefile.am format

Change-Id: Ia1cd28328a95f8c9ab7672ee2eab200be7829631
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

Refactor GPIO Monitor class

Refactor the GPIO Monitor class to use a common class, Evdev,
to inherit from. Evdev does the basic libevdev handling.

Change-Id: I427aa9720b0bbbea0284c0babcc03ece92e55f

Refactor GPIO Monitor class

Refactor the GPIO Monitor class to use a common class, Evdev,
to inherit from. Evdev does the basic libevdev handling.

Change-Id: I427aa9720b0bbbea0284c0babcc03ece92e55f5e
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

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Refactor GPIO Presence class

Refactor the GPIO Presence class to use a common class, Evdev,
to inherit from. Evdev does the basic libevdev handling.
A later commit moves monitor.hpp to this common c

Refactor GPIO Presence class

Refactor the GPIO Presence class to use a common class, Evdev,
to inherit from. Evdev does the basic libevdev handling.
A later commit moves monitor.hpp to this common class as well.

Change-Id: I3c872680c88f8f400fefe3af49eb9b84c7491ceb
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

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Monitor for GPIO state change

Use libevdev to monitor for GPIO state change and
update item present accordingly.

Change-Id: I1959a5ea09a7570c096b05d78a190394767a5ddd
Signed-off-by: Gunnar Mills <gm

Monitor for GPIO state change

Use libevdev to monitor for GPIO state change and
update item present accordingly.

Change-Id: I1959a5ea09a7570c096b05d78a190394767a5ddd
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

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Update inventory item interface

Update the inventory item interface, setting
Present and PrettyName.

Change-Id: I6a0a8bd66a8427253706b2b1ee14dca919d0a809
Signed-off-by: Gunnar Mills <gmills@us.ibm.

Update inventory item interface

Update the inventory item interface, setting
Present and PrettyName.

Change-Id: I6a0a8bd66a8427253706b2b1ee14dca919d0a809
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

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Read GPIO key on startup

Create class Presence which will be responsible for
determining and monitoring presence of inventory items
and updating D-Bus accordingly. With this commit
class Presence on

Read GPIO key on startup

Create class Presence which will be responsible for
determining and monitoring presence of inventory items
and updating D-Bus accordingly. With this commit
class Presence only reads the GPIO key on startup,
more to come later.

Change-Id: I647ae11d42a813a103e6d9d8922fd0f5b2155132
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

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Add base support for GPIO presence

This is the starting code needed to build the application.

Change-Id: I46112a222afbc057ac4fc4f8fb2b4c83822023df
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>

Fix incorrect initialization of evdev

Fixes openbmc/openbmc#1799

Change-Id: I81662ede88d1a05db48686ec57aab969c8dea27a
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Fill in gpio-util functionality

Process the command line arguments to know which GPIO
to set and what to set it to. Then create the GPIO
object and call the appropriate functions on it.

Change-Id:

Fill in gpio-util functionality

Process the command line arguments to know which GPIO
to set and what to set it to. Then create the GPIO
object and call the appropriate functions on it.

Change-Id: Ib8da78e5ae92e5ae0716901aa71243226668be10
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

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Add GPIO class

This class is used for accessing a GPIO via the
/dev/gpiochipX interface.

It requests a GPIO line handle from the GPIO device to
do the actual operation on.

The GPIO number to use,

Add GPIO class

This class is used for accessing a GPIO via the
/dev/gpiochipX interface.

It requests a GPIO line handle from the GPIO device to
do the actual operation on.

The GPIO number to use, for AST chips at least, is the
actual GPIO number, such as GPIOA0 = 0 and GPIOA7 = 7.

The class currently only supports writes.

Change-Id: I1c2ae38c23c5db502d5f14bcf9aa2e35094f1e9b
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

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Create phosphor-gpio-util framework

This application can write GPIOs. Read support may
be added in the future.

Aside from just setting a GPIO low or high, it can
also do: 0 -> <delay> -> 1 or 1 ->

Create phosphor-gpio-util framework

This application can write GPIOs. Read support may
be added in the future.

Aside from just setting a GPIO low or high, it can
also do: 0 -> <delay> -> 1 or 1 -> <delay> -> 0.
All functionality will be added in future commits

Change-Id: I2d3c761eb909ddce3952bfb3173ce271f03544ba
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

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Use libevdev for monitoring GPIO state change

Change-Id: I962af3034586f027e6ba74387dcda6ef0cf3672e
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Add gitignore

Change-Id: If41f0e682c5bed72700b5340a758cdb28d1dafc4
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Add gtest cases to test callback handler

Change-Id: If6c1e1616bcf73441648c8e0cb20017a4b218f70
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Call defined target when GPIO line is asserted

Change-Id: Ia5445a8d6585acfec69783ba158c8d866d526e97
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Add sd_event loop and callback handler

Change-Id: I032d1156be2b8082fdf347a60ec883a9bc0038ae
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Populate the file descriptor for the device

On a GPIO chip, there could be many gpio lines and for each line,
there would be a corresponding input device event file.
To know the assertion state of a

Populate the file descriptor for the device

On a GPIO chip, there could be many gpio lines and for each line,
there would be a corresponding input device event file.
To know the assertion state of a GPIO line, a descriptor is needed.
This descriptor will later be plugged into sd_event so that the
GPIO state changes can be caught and handled.

Change-Id: Idc8c2b429688fea2a5124b96677085b1be48128b
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

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Add code to accept command line arguments

Accepts command line arguments for path, interested GPIO transition
and an optional systemd unit file to be called into when the GPIO
transitions per expect

Add code to accept command line arguments

Accepts command line arguments for path, interested GPIO transition
and an optional systemd unit file to be called into when the GPIO
transitions per expectation.

Change-Id: I98d967d36cfbb768bc9d0dd04517575fa7e408fe
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

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Initial commit