- 24 Jan, 2016 2 commits
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Greg Kroah-Hartman authored
When the watchdog is not created properly, we need to propagate the error for this and not just return success. Reported-by:
Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@google.com>
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Greg Kroah-Hartman authored
Now that we have a svc ping command, let's add a watchdog to call it every so often (1 second at the moment.) If it finds something went wrong, post a stern message to the kernel log and call: start unipro_reset to reset the whole greybus hardware subsystem. Signed-off-by:
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- 23 Jan, 2016 1 commit
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Greg Kroah-Hartman authored
Make it executable on an Android system Change layout to be show heirachy a bit better. Signed-off-by:
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- 22 Jan, 2016 23 commits
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Gjorgji Rosikopulos authored
This change adds missing planar and semiplanar formats from gb specification. Mbus to Gb format map: V4L2_MBUS_FMT_NV12_1x8 -> 0x12 V4L2_MBUS_FMT_NV21_1x8 -> 0x13 V4L2_MBUS_FMT_YV12_1x8 -> 0x16 V4L2_MBUS_FMT_YU12_1x8 -> 0x17 Change depends on: "media: add new mediabus format enums for ara camera" Signed-off-by:
Gjorgji Rosikopulos <grosikopulos@mm-sol.com> Signed-off-by:
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Viresh Kumar authored
ES2 chips doesn't have efuses for storing module's vendor_id and product_id and so we have hacked bootrom earlier using firmware protocol, so that VID/PID can be received for fetching firmware packages. Another requirement is to expose them to sysfs, so that modules can be identified properly. That can be easily solved by updating interface's VID/PID, when fetched using firmware protocol and later reusing them while the module switches its identity from bootrom to firmware. Do that only if the module is ES2 and the VID/PID sent during hotplug are both 0. Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by:
Johan Hovold <johan@hovoldconsulting.com> Signed-off-by:
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Greg Kroah-Hartman authored
Horrid hack, but a start at making it easier for people to see what is currently connected without having to deal with poking around in sysfs directly. Signed-off-by: -
Vaibhav Agarwal authored
Originally, driver->name was not poluated from GB and thus manually set from audio_codec driver as a hack. This is no more required. Another patch already removes that hack. Now, with new driver->name as "legacy.<id-bundle.interface>" codec is registered with different name. So, during DAI link registration as well it needs modification. Signed-off-by:
Vaibhav Agarwal <vaibhav.agarwal@linaro.org> Signed-off-by:
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Johan Hovold authored
Abort if the AP_READY request fails. Also update the comment suggesting that this operation was a temporary one. Reviewed-by:
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Johan Hovold authored
Convert the legacy vibrator protocol driver to a bundle driver. Reviewed-by:
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Johan Hovold authored
Convert the legacy HID protocol driver to a bundle driver. This also fixes a potential crash should a (malicious) module have sent an early request before the private data had been initialised. Reviewed-by:
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Johan Hovold authored
Separate success and error paths more clearly. Reviewed-by:
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Johan Hovold authored
Set the connection request handler at creation rather than when enabling the connection. This is possible now that connections are created by the drivers that use them rather than by core at manifest parsing time. Reviewed-by:
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Johan Hovold authored
Look up legacy protocol at connection create instead of at init. Note that we can now look up the protocol before even creating the actual connection. This is needed to be able to set a connection request handler when creating the connection rather than when enabling it. Reviewed-by:
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Johan Hovold authored
Remove legacy protocol-id field that is only used by the legacy-protocol driver from the connection structure. Reviewed-by:
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Johan Hovold authored
Add initialized flag and use instead of the connection protocol pointer to determine when the legacy connection has been initialised. This is a step in moving legacy connection binding to connection-creation time. Reviewed-by:
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Johan Hovold authored
Add wrapper structure for legacy connections and add helpers to create and destroy legacy connections. This is a step in removing legacy connection fields from the core structures. Reviewed-by:
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Johan Hovold authored
Return an ERR_PTR on errors when creating connections. This allows driver probe to fail with a more informative error message as not all connection creation errors are due to memory exhaustion. Reviewed-by:
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Johan Hovold authored
Drop the _dynamic suffix from the exported interface that drivers use to create connections. Reviewed-by:
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Johan Hovold authored
Simplify the exported generic interface for creating dynamic connections. Since all driver connections will have a bundle we can drop the redundant interface parameter. Reviewed-by:
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Johan Hovold authored
The protocol-id parameter is only used by the legacy driver so remove it from the generic interface and move it to the legacy driver until it can be removed completely. Reviewed-by:
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Johan Hovold authored
Add dedicated helper to create control connections. This will allow us to simplify the generic (dynamic) interface. Reviewed-by:
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Johan Hovold authored
Drop legacy protocol parameter from static connection interface. Reviewed-by:
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Johan Hovold authored
Now that connection creation has been separated from interface initialisation, we should explicitly check for duplicate CPort descriptors when parsing the manifest. Reviewed-by:
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Johan Hovold authored
Defer connection creation to bundle driver probe instead of creating them when initialising the interface and parsing the manifest. Store copies of the CPorts descriptors in the bundle for the drivers to use, and update the legacy driver. This is needed for drivers that need more control over host-device resource management, for example, when a protocol needs to use a dedicated host CPort for traffic offloading (e.g. camera data). This also avoids allocating host CPorts for bundles that are not bound to a driver or for remote CPorts that a driver does not need. Reviewed-by:
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Greg Kroah-Hartman authored
When bundles are added and then removed, we have a race where we go to read the sysfs file, but it is now for a different bundle than the uevent was originally for. So add the bundle class to the uevent so we "know" what the correct bundle class was. Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by:
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Greg Kroah-Hartman authored
This implements the SVC "ping" command. It's tiny and simple, but we need something like this in order for us to "know" if all is working well. Signed-off-by:
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- 21 Jan, 2016 3 commits
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Greg Kroah-Hartman authored
People are getting confused as to what the firmware file name is for their module, so log it to make it easier to find modules with "blank" vid/pid values and let people know what to name their firmware files. Because we are now logging this, turn the debug message after the firmware request into an error message if something fails. Signed-off-by:
Michael Scott <michael.scott@linaro.org> Signed-off-by:
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Rui Miguel Silva authored
Add a new input device associated with the SVC to handle key events. This new events are transfer over a new greybus svc operation which is unidirectional. It was selected the KEY_A for representing the KEY_ARA_BUTTON key code. Signed-off-by:
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Greg Kroah-Hartman authored
With the recent changes by Johan to the driver model of the greybus code, the audio_codec no longer should need to provide a "dummy" driver when registering the codec. In fact, having it there causes the greybus core to crash when inserting the module. Removing it all fixes the crash. Signed-off-by:
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- 19 Jan, 2016 11 commits
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Johan Hovold authored
Allocate private data structure at probe and release at disconnect. The private data will be used to track the connections managed by the driver, but for now only holds a count of the number of cports the bundle has. Reviewed-by:
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Johan Hovold authored
Use the gb_connection_mutex when making sure a remote CPort is available. This is needed when moving to driver-managed connections that can be created and destroyed at any time. Also check for duplicate bundle-less connections. Reviewed-by:
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Johan Hovold authored
Serialise connection creation against concurrent creation and destruction using a global mutex. This is needed to prevent two drivers from attempting to create a connection to the same interface CPort and to cope with a racing connection destroy when moving to driver managed connections. Note that the locking can not (easily) be made more fine-grained as not all connections have an interface, but these are not hot paths anyway. Reviewed-by:
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Johan Hovold authored
Fix longstanding race that could lead to a connection being destroyed while processing an incoming message due to missing reference counting when looking up the connection. Add helpers to manipulate the connection kref. Reviewed-by:
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Johan Hovold authored
Drop the useless connection_mutex that did not, and can not be used to prevent connection lookup races in atomic context and therefore serves no purpose. Reviewed-by:
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Johan Hovold authored
Destroy the work queue when the connection is destroyed/deregistered instead of when the last reference is dropped. The work queue is not needed once the connection has been deregistered, and no operations will ever be added to it again (handled by checking connection->state) even if the connection object may not be deallocated until the final reference is dropped. The work-queue name is set based on the host-device name and host-device cport id, something which guarantees a unique name. This would no longer be true if the work queue was not destroyed at connection deregistration as a new connection could then be created for that very same host cport. This is not necessarily a problem unless some work queue features are used that require unique work-queue names, but let's try to be well behaved. Also update an obsolete comment and make explicit that a connection must be disabled before being destroyed. Reviewed-by:
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Johan Hovold authored
Remove WARN_ON from connection destroy testing for a NULL-connection when destroying a connection. This will allow for simpler driver code when releasing driver-managed connections. Reviewed-by:
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Johan Hovold authored
Add bundle-version operation to fetch the version of the bundle class. Retrieve the bundle version of all bundles when initialising the interface in case the control-protocol version is greater than 0.1. Reviewed-by:
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Johan Hovold authored
Remove the broken legacy protocol-version handling from core and move it to the legacy driver instead. Note that version handling has always been broken as legacy protocols were looked up and bound to connections before the connections were enabled and version negotiation could take place (over that very connection). Document that in the legacy driver as well. Reviewed-by:
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Johan Hovold authored
Store the "negotiated" protocol version to use in the svc state struct instead of the connection struct. The generic concept of a connection version is going away in favour of bundle-class versions. Reviewed-by:
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Johan Hovold authored
Disable bundle connections in core before calling driver disconnect in case the interface is already gone. This avoids unnecessary timeouts on hot-unplug when a driver does I/O in its disconnect callback. Reviewed-by:
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