cascardo/linux.git
7 years agogreybus: Documentation/sysfs: replace Ara references
Johan Hovold [Thu, 28 Jul 2016 09:40:52 +0000 (11:40 +0200)]
greybus: Documentation/sysfs: replace Ara references

Refer to the MDK as GMP MDK.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: arche-apb-ctrl: Rename ara,init-disable => arche,init-disable
Vaibhav Hiremath [Thu, 28 Jul 2016 08:26:44 +0000 (13:56 +0530)]
greybus: arche-apb-ctrl: Rename ara,init-disable => arche,init-disable

Inline with other properties used for arche-platform driver,
rename ara,init-disable => arche,init-disable.

Testing Done: Boot tested on EVT2 platform

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Rename debug and metadata mbus formats
Gjorgji Rosikopulos [Wed, 27 Jul 2016 18:47:01 +0000 (11:47 -0700)]
greybus: camera: Rename debug and metadata mbus formats

Change ARA prefix to GB_CAM for greyus camera specific
formats.

Change-Id: I1a0552516e8ea727c48085c59fc49f2409a89486
Signed-off-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: Blagovest Borisov Kolenichev <kolenichev_blagovest@projectara.com>
Acked-by: Laurent Pinchart <laurent.pinchart@linaro.org>
7 years agogreybus: audio: add runtime pm to enumerated control and DAPM widget
David Lin [Mon, 25 Jul 2016 23:29:20 +0000 (16:29 -0700)]
greybus: audio: add runtime pm to enumerated control and DAPM widget

There's an issue that the userspace is not able to control both the
enumerated control and DAPM widget when audio bundle is in the SUSPEND
state. This patch fixes the issue by adding pm_runtime_get/put() calls
for the both controls.

Testing Done:
 - Use tinymix to get and put both enumerated control and DAPM widget as
   the followings, and observe audio bundle is able to wake up from
   suspend.

$ tinymix "GB 3 PB source" 1
$ tinymix "GB 3 PB source"
GB 3 PB source: AIF1 >AIF2

$ tinymix "GB 3 AIF1_RX MUX" 2
$ tinymix "GB 3 AIF1_RX MUX"
GB 3 AIF1_RX MUX: Stereo Left >Right

Reported-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: svc_watchdog: Add sysfs file to change the behavior of bite
David Lin [Tue, 26 Jul 2016 23:27:28 +0000 (16:27 -0700)]
greybus: svc_watchdog: Add sysfs file to change the behavior of bite

Currently, AP performs unipro_reset if SVC fails to response to its
ping. While this error recovery is best suited for the end-user
experience, errors in the UniPro network could potentially go unnoticed
by the QA and fishfooders in the development phase of the project. This
patch adds an option to trigger a kernel panic so logs can be collected
for analysis.

Testing Done:
 - Reproduce issue and observe kernel panic when
   watchdob_control is changed to 'panic'

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware: Update Documentation and sample application
Viresh Kumar [Mon, 25 Jul 2016 21:38:09 +0000 (14:38 -0700)]
greybus: firmware: Update Documentation and sample application

Update documentation and sample application to capture the 'status' byte
in backend version operation and new error types in backend firmware
update operation.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware: Add 'status' byte to backend fw version response
Viresh Kumar [Mon, 25 Jul 2016 21:38:08 +0000 (14:38 -0700)]
greybus: firmware: Add 'status' byte to backend fw version response

The backend processor may not be ready to return the version of firmware
it is running by the time AP requests for it. The greybus specification
is updated to return 1-byte 'status' to return the error type, RETRY is
one of them.

This patch implements that in greybus now.

Note that the version structure was common across interface and backend
version requests earlier, but that is changing as well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware: Add new status types for backend updated request
Viresh Kumar [Mon, 25 Jul 2016 21:38:07 +0000 (14:38 -0700)]
greybus: firmware: Add new status types for backend updated request

The specification got updated with two more status values, add their
support in greybus.

As retry isn't really an error, skip printing error messages for it as
well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: Add quirk for no PM for S2 Loader
Viresh Kumar [Tue, 26 Jul 2016 20:41:04 +0000 (13:41 -0700)]
greybus: interface: Add quirk for no PM for S2 Loader

S2 Loader doesn't support runtime PM operations currently and we will
fail to suspend/resume the bundle for firmware management protocols.

Once that happens, the bundle and its connections will be pretty much
useless as we would have tried to disable/enable all connections during
such an operation and the S2 loader doesn't expect the connections to go
away during normal operation (except in the case of mode-switch).

This patch defines a new quirk GB_INTERFACE_QUIRK_NO_PM and uses a new
interface init status value (GB_INIT_S2_LOADER_INITIALIZED) which will
be advertised by S2 Loader now in the init status.

After detecting the currently running stage as S2 Loader, the kernel
wouldn't attempt suspending or resuming the bundle.

Reviewed-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: Rename *_NO_PM as *_NO_BUNDLE_ACTIVATE
Viresh Kumar [Tue, 26 Jul 2016 20:41:03 +0000 (13:41 -0700)]
greybus: interface: Rename *_NO_PM as *_NO_BUNDLE_ACTIVATE

Its a special quirk just for the bootrom as it doesn't have any PM
operations implemented. As the greybus bootrom bundle driver doesn't try
to do any PM stuff, this quirk is used only to skip bundle activate
operation currently.

Rename the GB_INTERFACE_QUIRK_NO_PM quirk to
GB_INTERFACE_QUIRK_NO_BUNDLE_ACTIVATE to suit its purpose better as the
GB_INTERFACE_QUIRK_NO_PM will be used for other quirk now.

Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware: Add runtime PM support
Viresh Kumar [Tue, 26 Jul 2016 20:41:02 +0000 (13:41 -0700)]
greybus: firmware: Add runtime PM support

This patch implements runtime PM support for firmware management bundle.
This guarantees that the bundle will be active, while the AP or the
Module is trying to exchange any operations over any of the CPorts.

- Firmware Management CPort:

  Runtime PM get/put calls are placed around the ioctl calls, which are
  all implemented as blocking ioctls.

- Component Authentication CPort:

  Runtime PM get/put calls are placed around the ioctl calls, which are
  all implemented as blocking ioctls.

- SPI:

  Uses the interface provided by spilib.c and runtime PM get/put are
  called around connection usage.

- firmware-download:

  This is the most tricky one. All operations on this CPort are
  initiated from the Module and not from the AP. And the AP needs to do
  runtime_pm_get() before any request is received over this CPort.

  The module doesn't send any request over this connection, unless the
  AP has requested the module over firmware management CPort to download
  a firmware package over firmware download CPort.

  And so the runtime PM get/put calls around the ioctls in
  fw-management.c are sufficient to handle the firmware management CPort
  as well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: operation: clean up request handler
Johan Hovold [Tue, 26 Jul 2016 15:11:30 +0000 (17:11 +0200)]
greybus: operation: clean up request handler

Clean up the incoming request handler somewhat by passing a properly
aligned header and dropping the now redundant id and type parameters.

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: operation: fix broken response tracepoint
Johan Hovold [Tue, 26 Jul 2016 15:11:29 +0000 (17:11 +0200)]
greybus: operation: fix broken response tracepoint

The response-received tracepoint is currently broken. Instead of parsing
the received message header it was tracing a bunch of zeroed fields from
an uninitialised response buffer.

Fix this by moving the tracepoint after were the response buffer is
initialised.

Fixes: 7cb496e6890e ("greybus: tracing: fix message traces")
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: operation: fix broken response error messages
Johan Hovold [Tue, 26 Jul 2016 15:11:28 +0000 (17:11 +0200)]
greybus: operation: fix broken response error messages

The operation type included in the error message printed for malformed
responses has never been correct. An uninitialised buffer was used to
retrieve the type, resulting in the type always being reported as 0.

Fix this by passing a properly aligned header to the response handler,
and drop the now redundant id and result parameters.

Fixes: cb0ef0c019ab ("operation: print message type on errors")
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: HID: Add runtime pm support
Philip Yang [Fri, 22 Jul 2016 21:48:14 +0000 (05:48 +0800)]
greybus: HID: Add runtime pm support

Modify HID greybus driver to support runtime PM framework.
The suspend and resume fucntion have been test with tutorial-hid,
e-ink-display and gpbridge-test image by sysfs resume, all HID
buttons work well on suspend/resume.

Testing Done: Compiled and verified on EVT2, DB3.5, GPB test module
              with daughter board, Red module.

Signed-off-by: Philip Yang <yang_philip@projectara.com>
Reviewed-by: David Lin <dtwlin@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Rename download_firmware() as find_firmware()
Viresh Kumar [Fri, 22 Jul 2016 21:13:44 +0000 (14:13 -0700)]
greybus: bootrom: Rename download_firmware() as find_firmware()

The download_firmware() function isn't downloading the firmware but just
finding if one is available or not. The same applies to the error
message printed by it.

Replace 'download' with 'find' to make it sound better.

Reported-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Create gb_bootrom_cancel_timeout()
Viresh Kumar [Fri, 22 Jul 2016 21:13:43 +0000 (14:13 -0700)]
greybus: bootrom: Create gb_bootrom_cancel_timeout()

We set timeouts using gb_bootrom_set_timeout(), which hides the internal
implementation, i.e. workqueues.

While canceling timeouts, we do cancel_delayed_work_sync(), which
exposes the internal implementation and doesn't look that clean.

Create gb_bootrom_cancel_timeout() to hide the internal implementation
here as well.

Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Set timeout before sending AP_READY
Viresh Kumar [Fri, 22 Jul 2016 21:13:42 +0000 (14:13 -0700)]
greybus: bootrom: Set timeout before sending AP_READY

A special race is observed in the case where the phone boots with
modules attached to it.

In that case, the AP processes a later FIRMWARE_SIZE request from the
bootrom, before processing the response to the earlier AP_READY request.
And because of that, we set the timeout from gb_bootrom_probe() after
trying to cancel it from gb_bootrom_firmware_size_request().

And with that, if the firmware package isn't available for the kernel to
directly read from, then we get a timeout print message like below:

[   23.669764] bootrom 1-3.3.1: Firmware file 'ara_00000126_00001001_fffe0001_ffe5001a_s2l.tftf' requested
[   24.680528] bootrom 1-3.3.1: Timed out waiting for Firmware Size Request from the Module

Note that this doesn't happen if the module is inserted into the frame,
after the phone is already booted.

This behavior is the result of an earlier commit cdd1cb3f4943
("operation: add completion work queue").

This perhaps happens only at boot time because the UNBOUND wq
(connection->wq) gets a chance to run on other CPUs, while the BOUND wq
(gb_operation_completion_wq) doesn't at that stage (24 seconds since
boot).

Setting the timeout before sending the AP_READY request fixes it for
now.

Reported-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Don't print duplicate error messages
Viresh Kumar [Fri, 22 Jul 2016 21:13:41 +0000 (14:13 -0700)]
greybus: bootrom: Don't print duplicate error messages

On failing to find a firmware image, we get these today:

bootrom 1-3.3.1: Firmware request for ara_00000126_00001001_fffe0001_ffe5001a_s2l.tftf has failed : -12
bootrom 1-3.3.1: gb_bootrom_firmware_size_request: failed to download firmware (-12)

Which are more or less duplicate, as they print error for the same root
cause.

With this patch this is all we get now:

bootrom 1-3.3.1: failed to download ara_00000126_00001001_fffe0001_ffe5001a_s2l.tftf firmware (-12)

Reported-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Skip setting timeout in failure path of size request
Viresh Kumar [Fri, 22 Jul 2016 21:13:40 +0000 (14:13 -0700)]
greybus: bootrom: Skip setting timeout in failure path of size request

The currently set value of next_request_type in the error path of
gb_bootrom_firmware_size_request() is not correct, as it should have
been NEXT_REQ_FIRMWARE_SIZE for the failure case (as we should be
waiting for another similar request).

But, if an error occurs in gb_bootrom_firmware_size_request(), then the
ES3 bootrom will never be able to recover from it and send another
request. And so there is no point waiting for another request and timing
out.

Skip doing that in error path.

Reported-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: vibrator: integrate runtime pm
Ann Chen [Fri, 22 Jul 2016 07:33:55 +0000 (15:33 +0800)]
greybus: vibrator: integrate runtime pm

Integrate greybus drivers with the Linux Kernel RuntimePM framework
for vibrator driver.

Testing Done: AP side (kernel) can control the vibrator driver with
suspend and resume.

Signed-off-by: Ann Chen <chen_ann@projectara.com>
Reviewed-by: David Lin <dtwlin@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: control: Print bundle-id in print messages
Viresh Kumar [Fri, 22 Jul 2016 05:41:05 +0000 (22:41 -0700)]
greybus: control: Print bundle-id in print messages

The new power management specific operations added to the control
protocol do not print the bundle-id in the error messages and it is not
possible to identify which bundle-id the operation failed for.

Fix that and do minor rewriting of the print messages to make them more
readable.

Tested on EVT 2.0 with gpbridge-test module.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: operation: print id when synchronous operation timeout
David Lin [Fri, 22 Jul 2016 20:46:25 +0000 (13:46 -0700)]
greybus: operation: print id when synchronous operation timeout

In case of a synchronous operation timeout error, it's helpful for
purpose of debugging to print the operation id in the error message, so
that we know if the response is received at a later time after operation
time out.

Testing Done:
 - Observe the error message below when response comes later after
operation timeout:

[  792.973978] greybus greybus1: 0/0:0: synchronous operation id 0x0005
of type 0x21 failed: -110
[  800.646694] greybus greybus1: 0/0:0: unexpected response id 0x0005
received

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: audio: Avoid using ARA keyword
Vaibhav Agarwal [Fri, 22 Jul 2016 04:11:30 +0000 (09:41 +0530)]
greybus: audio: Avoid using ARA keyword

It is suggested to avoid using ARA keyword externally. So we need to
update GB codec driver. Also, codec name is currently set to 'gb-codec'.
However, it makes more sense to name it as apb-dummy-codec, since it is
used to control various audio modules connected to APB via greybus.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: spilib: make spilib independent of gbphy
Viresh Kumar [Thu, 21 Jul 2016 21:45:06 +0000 (14:45 -0700)]
greybus: spilib: make spilib independent of gbphy

spilib is used by multiple users currently (spi.c and fw-core.c) but
commit aa52b62a0556 broke that hierarchy and introduced gbphy dependent
code in spilib.

This may have unreliable consequences as we are doing following
operation unconditionally now:

gbphy_dev = to_gbphy_dev(spi->parent);
gbphy_runtime_get_sync(gbphy_dev);

which may not go well when the parent is of type &bundle->dev
(fw-core.c).

This patch introduces spilib_ops and lets the users of the core register
them. This shall have no functional change for the spi.c usecase and
shall fix the unreliable results for the fw-core.c usecase.

Tested by writing to mtd0 dev and verifying (with print messages) that
the below routines are getting called for a gpbridge-test module.

Fixes: aa52b62a0556 ("spi: Add runtime_pm support")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware: Improve test application
Viresh Kumar [Wed, 20 Jul 2016 23:39:00 +0000 (16:39 -0700)]
greybus: firmware: Improve test application

It can take arguments not and we can perform all the operations with a
single binary, sorry for missing that initially.

Usage: ./firmware <gb-fw-mgmt-X> <type: interface/backend> <firmware-tag> <timeout>

And all of them have default values, etc.

Tested with a semco 13 MP module.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: timesync: do not print frametime by default
David Lin [Thu, 21 Jul 2016 00:18:39 +0000 (17:18 -0700)]
greybus: timesync: do not print frametime by default

Currently frametime are being printed whenever an Interface is
runtime-resumed. This is unnecessarily chatty. This patch moves the
frametime print from using pr_info() to dev_dbg().

Testing Done:
 - $ echo "module greybus +p" > /d/dynamic_debug/control

[   97.699395] greybus 1-svc: greybus frametime: ap=2042778707
1-svc=2042775185 greybus1=2042778397 1-6.6=2042778390

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Jeffrey Carlyle <jcarlyle@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: pm: add error handling to bundle activation
Bartosz Golaszewski [Thu, 21 Jul 2016 16:09:34 +0000 (18:09 +0200)]
greybus: pm: add error handling to bundle activation

The firmware now keeps the underlying hardware disabled until
receiving the first Bundle Activate request. Additionally: requesting
transition to a state the bundle is already in is no longer an error.

We can now add proper error handling to the bundle activate call.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: control: suppress bundle_activate() for bootrom
Johan Hovold [Thu, 21 Jul 2016 12:24:11 +0000 (14:24 +0200)]
greybus: control: suppress bundle_activate() for bootrom

We always knew backward compatibility with the ES3 bootrom, which was
finalised about a year ago, would be a pain. Here we go again.

The bootrom does not support control requests added after it was burnt
into ROM for obvious reasons. This means that we need to suppress
sending the new bundle_activate() operation to any interface executing
the legacy bootrom.

Do so by adding a new NO_PM interface quirk (we can use the
control-protocol version for this later once we bump it).

Note that the interface-disable path (e.g. for power down) is already
handled by the FORCED_DISABLE quirk, and that the suspend/resume
paths are currently avoided by making sure that the bootrom bundle
never suspends.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: firmware.h: rename TFTF firmware filenames
Joel Porquet [Thu, 21 Jul 2016 22:57:38 +0000 (15:57 -0700)]
greybus: firmware.h: rename TFTF firmware filenames

Replace prefix "ara_" with prefix "gmp_" for TFTF firmware filenames.

Testing Done: compiled and flashed EVT2 (bootimage) and tested that
              "gmp_" prefixed tftf files are expected. Pushed one from
      FDK and checked that it's properly loaded.

Signed-off-by: Joel Porquet <porquet_joel@projectara.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: fix interface_id attribute group
Johan Hovold [Thu, 21 Jul 2016 10:48:57 +0000 (12:48 +0200)]
greybus: interface: fix interface_id attribute group

All interfaces, regardless of type, should have an interface_id
attribute reflecting its position on the frame.

This has been reported to cause an assertion failure in libmoduleutil
for dummy modules.

Testing done: Verified that the attribute is present for registered
dummy interfaces.

Reported-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Tested-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: timesync: probe shouldn't complete until FrameTime sync does
Bryan O'Donoghue [Wed, 20 Jul 2016 18:31:18 +0000 (19:31 +0100)]
greybus: timesync: probe shouldn't complete until FrameTime sync does

Currently the probe() function contains the asynchronous() variant of
FrameTime synchronization. This patch converts to the synchronous() version
of synchronization. This is required for two reasons first a probe() cannot
reasonably be considered to be complete without successfully completing a
time synchronization for Interfaces that care about that sync. Secondly
scheduling the operation asynchronously means its possible the PM-runtime
suspend() path can execute before the async timesync operation completes.
For both reasons we want to run synchronization - synchronously.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: loopback_test: Add -f argument to cancel all tests
Ryan Lim [Wed, 20 Jul 2016 15:14:04 +0000 (08:14 -0700)]
greybus: loopback_test: Add -f argument to cancel all tests

To make sure tests on all devices, enabled or not, are cancelled,
specify -f when starting new loopback test.

Signed-off-by: Ryan Lim <limryan@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: loopback_test: Fix -z argument bug
Ryan Lim [Wed, 20 Jul 2016 15:14:03 +0000 (08:14 -0700)]
greybus: loopback_test: Fix -z argument bug

The -z argument was missing the break statement needed in the switch
block and was not in the getopt list.

Signed-off-by: Ryan Lim <limryan@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: loopback_test: Cancel only the tests running on selected devices
Ryan Lim [Wed, 20 Jul 2016 15:14:02 +0000 (08:14 -0700)]
greybus: loopback_test: Cancel only the tests running on selected devices

When starting a loopback test, it cancels all currently running tests on
all loopback devices. When -m argument is given, which runs the test on
specific loopback devices, only the tests running on the selected
devices need to be cancelled before starting new tests.

Signed-off-by: Ryan Lim <limryan@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: timesync: reduce initial startup time
Bryan O'Donoghue [Tue, 19 Jul 2016 14:04:37 +0000 (15:04 +0100)]
greybus: timesync: reduce initial startup time

Currently we have a long initial delay when initiating the first operation
to synchronize the FrameTime. That made sense during development of the
feature since we did synchronization asynchronously and wanted to give some
grace time for new Interfaces to be added before initiating a new
synchronization. On the PM runtime resume path though we do a synchronous
restoration of FrameTime and in this case waiting for 1 second before
initiating the first operation is clearly wrong.

This patch reduces the initial operation time bringing the synchronous call
time down by 990 milliseconds.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: move all firmware prefix strings to one place
Greg Kroah-Hartman [Wed, 20 Jul 2016 17:11:37 +0000 (10:11 -0700)]
greybus: move all firmware prefix strings to one place

The firmware prefix is hard-coded in a few different places.  Put it all
in one handy #define, for when/if we ever decide to change it in the
future...

Testing: 'strings gb-firmware.ko gb-bootrom.ko | grep ara_' produced the
 same output before and after this patch.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: hibernate UniPro link in activation error path
Johan Hovold [Wed, 20 Jul 2016 14:40:27 +0000 (16:40 +0200)]
greybus: interface: hibernate UniPro link in activation error path

To be well-behaved, we should hibernate the link before disabling UniPro
in case the link has already been established (i.e. when the interface
type has been detected as UniPro or Greybus).

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: fix power_state documentation
Johan Hovold [Wed, 20 Jul 2016 14:40:26 +0000 (16:40 +0200)]
greybus: interface: fix power_state documentation

Reword the power_state attribute documentation to make it clear that an
attempt to boot and possibly enumerate an interface is made when writing
"on" to the file, and that on errors the interface will again be powered
down.

Drop the incorrect claim that writing the currently read value has no
effect, since no such guarantees can be made (e.g. several writers may
be sleeping on the interface mutex).

Also fix some minor language issues.

Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: add power_state attribute
Viresh Kumar [Wed, 20 Jul 2016 14:40:25 +0000 (16:40 +0200)]
greybus: interface: add power_state attribute

User space needs the capability of powering ON or OFF an Interface for
multiple use cases. For example, userspace may want an Interface
currently in its S3 boot stage, to boot into its S2 Loader stage to
update the bridge SPI flash. Or the Interface is running its S2 Loader
stage and updated the SPI flash with the new S2 Loader firmware and
wants to boot into the new S2 Loader firmware.

Another use case can be, Android wants to disable (not eject) a
misbehaving module.

Add a 'power_state' sysfs file within the interface directory. It can be
read to know the current power state of the Interface and can be written
to power ON or power OFF an Interface. Possible values that can be
written or read from it are: "on" and "off".

Testing Done: Tested by enabling/disabling camera module on EVT 2.0.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
CC: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
[johan: drop es3-quirk duplication, add to power attribute group, fix
return value, drop tags ]
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: prevent reactivation during removal
Johan Hovold [Wed, 20 Jul 2016 14:40:24 +0000 (16:40 +0200)]
greybus: interface: prevent reactivation during removal

Make sure to prevent an interface that is going away from being
reactivated.

This is needed to preemptively close a race between the upcoming feature
to reactivate a powered-down interface and physical removal (i.e.
module_removed event processing) as well as logical removal (e.g. the
current system-suspend hack).

Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: make sure type is invariant during reactivation
Johan Hovold [Wed, 20 Jul 2016 14:40:23 +0000 (16:40 +0200)]
greybus: interface: make sure type is invariant during reactivation

An interface is not expected to change its type after a power down and
reactivation so make sure to treat that as a fatal error.

This is complicated by the current Toshiba ES3 hack which requires us
to retry activation as Greybus interfaces are sometimes misdetected as
UniPro interfaces. Handle that by only retrying activation the first
time an interface is activated, and for interfaces already detected as
having Greybus type.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: clean up ES3 activation-retry hack
Johan Hovold [Wed, 20 Jul 2016 14:40:22 +0000 (16:40 +0200)]
greybus: interface: clean up ES3 activation-retry hack

Clean up the ES3 activation retry-hack and isolate it in the interface
code.

This way the retry hack can be reused when we soon start allowing
interfaces to be reactivated after having been powered down.

Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: do not read DME during reactivation
Johan Hovold [Wed, 20 Jul 2016 14:40:21 +0000 (16:40 +0200)]
greybus: interface: do not read DME during reactivation

It will soon be possible to reactivate an interface that has been
powered down after already having been activated. In that case there's
no need to re-read the DME attributes as part of activation as the
values are already cached.

Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: use an enum for interface type
Johan Hovold [Wed, 20 Jul 2016 14:40:20 +0000 (16:40 +0200)]
greybus: interface: use an enum for interface type

Use an enum for the interface type instead of using the SVC protocol
values directly.

Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: module: suppress activation error message for dummy interfaces
Johan Hovold [Tue, 19 Jul 2016 13:24:50 +0000 (15:24 +0200)]
greybus: module: suppress activation error message for dummy interfaces

We currently handle dummy interfaces by deactivating them using
activation error paths, but we don't want the corresponding
module_inserted error message to be printed.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: amend interface registration message
Johan Hovold [Tue, 19 Jul 2016 13:24:49 +0000 (15:24 +0200)]
greybus: interface: amend interface registration message

Amend the interface registration message with the detected interface
type, and only print the Ara VID/PID and DDBL1 attributes for the types
for which they exist.

Also drop the now redundant message about a detected dummy interface
from the activate operation helper.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: make attributes type dependent
Johan Hovold [Tue, 19 Jul 2016 13:24:48 +0000 (15:24 +0200)]
greybus: interface: make attributes type dependent

Make most interface attributes type dependent (e.g only UniPro and
Greybus interfaces should have a DDBL1 Manufacturer ID attribute).

Note that the power attributes (e.g. current_now) will only be visible
for UniPro- and Greybus-type interfaces (i.e. interfaces that can draw
power).

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: partition attribute group
Johan Hovold [Tue, 19 Jul 2016 13:24:47 +0000 (15:24 +0200)]
greybus: interface: partition attribute group

Partition the current attribute group into four groups for UniPro,
Greybus, power and common attributes.

This is a step in refining the interface-type handling as attributes are
type dependent.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: interface: add interface-type attribute
Johan Hovold [Tue, 19 Jul 2016 13:24:46 +0000 (15:24 +0200)]
greybus: interface: add interface-type attribute

Add an interface-type string attribute that represents the detected
interface type as either "dummy", "unipro", "greybus", or "unknown".

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: arche-platform: Add support for init-off feature
Vaibhav Hiremath [Tue, 19 Jul 2016 08:01:46 +0000 (13:31 +0530)]
greybus: arche-platform: Add support for init-off feature

Disable wake_detect interrupt after request

As part of SW-4344/SW-7061, now we are enabling FW flashing
to all builds. That means check for need of FW upgrade is
going to be present in all builds, and moving to FW_FlASHING
mode from active is heavy operation; so the idea here is
simplify this process and save the boot time due to switching
back-n-forth between ACTIVE<=>FW_FLASHING modes.

So we decided to put unipro into OFF state by default on boot,
which can be changed through DT property. If arche-platform
device node has "arche,init-off" property set, then unipro
will be in OFF state on boot. User can bring it back by

 # echo active > /sys/devices/arche_platform*/state

And to simply the exit code of probe() fn the
arche_platform_coldboot_seq() has been shifted to the
bottom of the _probe() fn.

Testing Done: Tested on EVT2 platform, with and without
"arche,init-off" property, multiple times.
Note: I am seeing SW-7128, which is not related to these changes.

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Tested-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: connection: drop the svc quiescing operation
Johan Hovold [Tue, 19 Jul 2016 15:21:27 +0000 (17:21 +0200)]
greybus: connection: drop the svc quiescing operation

Connection tear down is being reworked, and the SVC quiescing operation
is going away.

Let's remove this operation now along with the coupled second ping from
our intermediate tear down implementation.

This both avoids unnecessary noise in the logs resulting from the fact
that the SVC side of the quiescing operation was never merged, and
speeds up connection tear down slightly.

Testing done: Tested on EVT2 using runtime PM.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: sdio: add switch voltage operation
Rui Miguel Silva [Tue, 19 Jul 2016 14:41:30 +0000 (15:41 +0100)]
greybus: sdio: add switch voltage operation

Core sd/mmc needs the start_signal_voltage_switch operation to be
defined to issue a voltage switch command. So, we define it here even
though we do not need to take in action on it, since all voltage control
is done in the Module.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: sdio: convert vdd kernel values to greybus
Rui Miguel Silva [Tue, 19 Jul 2016 14:41:29 +0000 (15:41 +0100)]
greybus: sdio: convert vdd kernel values to greybus

We need to convert vdd kernel values to greybus ones. And we get this by
shifting the kernel values by 8.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: bootrom: Use "s2l" instead of boot stage in package name
Viresh Kumar [Sat, 16 Jul 2016 16:57:30 +0000 (09:57 -0700)]
greybus: bootrom: Use "s2l" instead of boot stage in package name

The S3 firmware and S3-BFU firmware images will be named like this going
forward:

S3: ara_00000126_00001001_fffe0001_ffe70018_s3f.tftf
S3-BFU: ara_00000126_00001001_fffe0001_ffe70018_s3_bfu.tftf

But the current naming for S2 loader image is:

ara_00000126_00001001_fffe0001_ffe70018_02.tftf

It makes sense to use similar encoding for all three packages and so it
should be named as:

ara_00000126_00001001_fffe0001_ffe70018_s2l.tftf

Because the boot stage is passed from ES3 bootrom, we can't change its
value now. But the string created to match the package name is created
in bootrom.c and that is the only string we create from bootrom.c.

Update bootrom.c to use "s2l" instead of "02" in the package name.

Compile Tested only.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Karthik Ravi Shankar <karthikrs@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: timesync: Bugfix ping should not result in -EAGAIN
Bryan O'Donoghue [Tue, 19 Jul 2016 00:56:49 +0000 (01:56 +0100)]
greybus: timesync: Bugfix ping should not result in -EAGAIN

gb_timesync_schedule_synchronous() is currently making a synchronous
FrameTime synchronization happen. It does a wait_event_interruptible() and
then goes to check the status of the state-machine. Occasionally the state
indicates PING - which is a completely valid state and should result in a
result code of 0 not -EAGAIN. This patch fixes by making
__gb_timesync_get_status() return 0 instead of -EAGAIN for the PING state.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: David Lin <dtwlin@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: greybus_protocols.h: convert __u32 to __le32
Bryan O'Donoghue [Mon, 18 Jul 2016 13:59:37 +0000 (14:59 +0100)]
greybus: greybus_protocols.h: convert __u32 to __le32

All 32 bit declarations associated with data interchange to the greybus
network need to be declared explicitly as little-endian since that is the
byte order we use on the greybus network. struct gb_audio_topology is
declaring its variables as u32. Fortunately this structure isn't currently
used so we can do a conversion from u32 to __le32 without any ancillary
code-churn.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: greybus_protocols.h/es2: Ensure __le32 is used not u32
Bryan O'Donoghue [Mon, 18 Jul 2016 13:59:36 +0000 (14:59 +0100)]
greybus: greybus_protocols.h/es2: Ensure __le32 is used not u32

There is a dangling u32 in es2/greybus_protocols.h that is only obvious
when you try to compile up gbsim. We need to do a cpu_to_le32 and declare
the 32-bit int in the header as __le32. This patch does that and splits out
the assignment of the req->flags parameter to a temporary variable to allow
for later printing.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Suggested-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Update CSI config parameters
Jacopo Mondi [Fri, 15 Jul 2016 09:03:46 +0000 (11:03 +0200)]
greybus: camera: Update CSI config parameters

Remove lines_per_second parameter from csi configuration
structure as VFE driver dropped dependency on it

Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Configure APB-A with new params
Jacopo Mondi [Fri, 15 Jul 2016 09:03:45 +0000 (11:03 +0200)]
greybus: camera: Configure APB-A with new params

Update the configuration supplied to APB-A to use new parameters, while
keeping compatibility with legacy camera modules.
Substitute hard-coded clock frequency with information provided by camera
module, and retrieve the maximum CSI Long Packet length from the
returned stream configuration.

This patch requires APB-A csi-tx driver to be updated to comply with
newly defined bandwidth requirements.

Testing Done: preview, capture and video recording with updated csi-tx
driver on APB-A side, and legacy white camera module firmware

Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Update Configure Streams Response
Jacopo Mondi [Fri, 15 Jul 2016 09:03:44 +0000 (11:03 +0200)]
greybus: camera: Update Configure Streams Response

As camera specification gets updated, and Configure Stream Response
payload modified, define here the new response structure.
In order to not break non up-to-date camera modules, keep the existing
structure and add the _deprecated suffix to it.

Add the size of both new and old structure in order to discriminate
dynamically which version of Camera Specification the camera module
implements and translate deprecated version of configure_streams response
in the new one.

In order not to break camera functionalities, for testing purposes,
hard-code values the APB-A CSI Tx driver still requires for proper
interface configuration (lines_per_second and num_lanes)

Testing Done: Preview, capture and video recording with white camera
module and APB-A with legacy firmware implementations

Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Hardcode the APB-A CSI-2 TX parameters
Laurent Pinchart [Fri, 15 Jul 2016 09:03:43 +0000 (11:03 +0200)]
greybus: camera: Hardcode the APB-A CSI-2 TX parameters

Camera modules will stop reporting the number of lines per second,
hardcode the parameter in the driver until the APB-A CSI-2 TX
configuration protocol gets updated as well to use a more appropriate
form of bandwidth information.

The number of data lanes is also hardcoded as it should not depend on
the module's CSI-2 bus configuration.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Add wrapper for sync operation with flags
Jacopo Mondi [Fri, 15 Jul 2016 09:03:42 +0000 (11:03 +0200)]
greybus: camera: Add wrapper for sync operation with flags

The greybus operation core synchronous operation call doesn't support
operation flags. Create a new synchronous operation wrapper with flags,
and modify the capabilities operation implementation to use it.

The code could be later moved to the greybus core if other drivers have
a similar need.

Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: camera: Add bpp to Greybus Format description
Jacopo Mondi [Fri, 15 Jul 2016 09:03:41 +0000 (11:03 +0200)]
greybus: camera: Add bpp to Greybus Format description

Add the bytes per pixel value to the structure describing a Greybus
Protocol Image Format.
The bpp information will be used to compute the length in bytes of a
line of pixel data

Signed-off-by: Jacopo Mondi <jacopo.mondi@linaro.org>
Reviewed-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: audio_topology: Fix compile warning
Viresh Kumar [Sat, 16 Jul 2016 16:44:28 +0000 (09:44 -0700)]
greybus: audio_topology: Fix compile warning

Fix following compile warning by staticizing gb_generate_enum_strings().

greybus/audio_topology.c:134:12: warning: symbol 'gb_generate_enum_strings' was not declared. Should it be static?

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: power_supply: add missing defines present in the specification
Rui Miguel Silva [Fri, 15 Jul 2016 11:16:55 +0000 (12:16 +0100)]
greybus: power_supply: add missing defines present in the specification

Some of the Greybus properties values (capacity level and scope) even
though they are defined in the specification were missing from the
protocol header.

They still match the kernel ones, but they should be present in there
for protocol sake.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: power_supply: remove references to kernel header
Rui Miguel Silva [Fri, 15 Jul 2016 11:16:54 +0000 (12:16 +0100)]
greybus: power_supply: remove references to kernel header

In Greybus power supply macro definitions we have a comment that point
to a kernel header, remove it since we have a specification for that.

As at it, align the status values to the upper values.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: timesync/pm: Make synchronous call to restore FrameTime
Bryan O'Donoghue [Fri, 15 Jul 2016 17:01:49 +0000 (18:01 +0100)]
greybus: timesync/pm: Make synchronous call to restore FrameTime

When we discussed and agreed a serialized way to-do PM runtime
suspend/resume we omitted the necessity to restore the FrameTime on resume.
This patch restores the FrameTime synchronously such that when an Interface
PM resume callback completes we have either successfully restored the
FrameTime including the new Interface or we've produced a result code to
indicate what went wrong when trying.

Suggested-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: David Lin <dtwlin@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: hd: arche-platform: implement greybus shutdown
David Lin [Wed, 13 Jul 2016 00:41:21 +0000 (17:41 -0700)]
greybus: hd: arche-platform: implement greybus shutdown

Implement platform driver shutdown callback to perform proper greybus
shutdown so that the userspace unipro_shutdown service that shuts down
the APB/SVC abruptly can be removed. The shutdown callback in
arche-platform will first remove SVC so that all the Interface can be
Deactivated in a sequence according to the spec before powering off the
APB:

Before:
 -> Arche/APB power off
 -> SoC power off

After this patch:
 -> HD shutdown
     -> SVC shutdown
         -> Module shutdown
             -> Interface shutdown
                 -> Bundle shutdown
 -> Arche/APB power off
 -> SoC power off

Testing Done:
 - Observe all Interfaces are deactivated in the log during shutdown
 - Measure power off current and make sure no regression

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: power_supply: convert greybus properties to power supply properties
Rui Miguel Silva [Wed, 13 Jul 2016 13:11:20 +0000 (14:11 +0100)]
greybus: power_supply: convert greybus properties to power supply properties

We need to translate greybus properties to power supply core properties,
for that when parsing the properties that were fetch during
configuration we check if there is a match to the running kernel version
and store it in a new field (gb_prop) in the gb_power_supply_prop
struct.

If the corresponding property does not exist in the running
kernel (because of version or vendor specific property) we drop that
property.

A collection of properties that, at this time, may diverge are defined
in the kernel_ver.h to avoid breakage at build time and run time if this
properties are not supported by the kernel.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: power_supply: change property values to integer
Rui Miguel Silva [Wed, 13 Jul 2016 13:11:19 +0000 (14:11 +0100)]
greybus: power_supply: change property values to integer

To align with power supply core values type (integer) move the val and
previous_val to integer also.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: use memdup_user()
Alex Elder [Thu, 14 Jul 2016 19:24:19 +0000 (14:24 -0500)]
greybus: use memdup_user()

Coccinelle reports that there are two opportunities to use memdup_user()
in "authentication.c".  This patch simplifies the code in cap_ioctl() by
taking advantage of that.  Make use of a local variable "size" to improve
readability.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: get rid of a compile warning
Alex Elder [Thu, 14 Jul 2016 19:24:18 +0000 (14:24 -0500)]
greybus: get rid of a compile warning

The compiler has no way of knowing whether a called function will
actually assign something to the object whose address is passed as
an argument.  So it must assume it won't happen, and this leads to a
compile warning.  Fix this.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
7 years agogreybus: loopback: add runtime pm support
Axel Haslam [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: loopback: add runtime pm support

Add runtime pm to the loopback driver so that
the module wakes up from suspend while a test
is executed.

Testing Done: Let the module enter standby and
execute a loopback test.

Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: spi: Add runtime_pm support
Axel Haslam [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: spi: Add runtime_pm support

Add runtime operations to the spi driver so that the
module is woken up when an spi transfer is started
and put back to sleep when the transfer is done.

Testing Done: Let the module enter standby and initiate
an spi operation. The operation wakes up the module
and succeeds.

Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: pwm: Add runtime_pm support
Axel Haslam [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: pwm: Add runtime_pm support

Add runtime pm support for the pmw driver.

Testing Done: Set the parameters of pwm0, and enable.
Disable pwm0 and let the module enter standby.
Enable pwm0, and observe that with an oscilloscope
that the wave form is the same as before.

Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: gpio: Add runtime_pm suppourt
Axel Haslam [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: gpio: Add runtime_pm suppourt

Add runtime pm support for the gpio driver.
Since there is no remote wakeup support, the
module will not suspend as long as a gpio is
requested.

Maybe an optimization could be made, to allow suspend
if all the requested gpios are in output mode, since
the bridge should maintain the state of the gpio
during suspend.

Testing Done: using the test board, let the
gpbrige enter standby and request a gpio.

Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: uart: Add runtime pm support
Axel Haslam [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: uart: Add runtime pm support

This adds runtime pm support for the uart driver.

Testing Done: Using the test daughter board, let
the gpb bridge enter standby and do a uart transfer
operation.

Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: i2c: add runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: i2c: add runtime pm support

Add runtime pm support to camera i2c bridged phy device class driver

Testing Done:
 - Passed #gb_test.sh -v -t i2c

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: gbphy: add gbphy runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: gbphy: add gbphy runtime pm support

Since GBphy is a child of the Bundle device driver, for those runtime pm
settings that are common to all the protocol drivers need to go in to
the GBphy bus driver.

Testing Done:
 - Check gbphy driver can be autosuspended

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: camera: add runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: camera: add runtime pm support

Add runtime pm support to camera protocol device class driver.

Testing Done:
 - Make sure white camera module is able to runtime suspend and resume
   when the camera is being used

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: audio: add runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: audio: add runtime pm support

Add runtime pm support to audio protocol device class driver.

Testing Done:
 - Use white speaker module and check the interface is autosuspended when
   it's idle and resumed when playback audio

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: bundle: add runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: bundle: add runtime pm support

This patch adds runtime pm support for the bundle core. Unbound bundle
devices are always deactivated. During probe, Runtime PM status is set
to enabled and active and the usage count is incremented. If the driver
supports runtime PM, it should call pm_runtime_put() in its probe
routine and pm_runtime_get_sync() in remove routine as bundle needs to
be resume before it can be deactivated.

Testing Done:
 - Check runtime_status of the bundle driver when bundle goes to suspend

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: interface: add runtime pm support
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: interface: add runtime pm support

Configure and enable runtime pm support for the Interface. Refer to the
12.2. The Interface Lifecycle of the Greybus specification for details
on the requirements for transitioning from ENUMERATED to SUSPEND and
vice versa. All the Bundles for the Interface have to be either OFF or
SUSPENDED before the Interface can be autosuspended.

Testing Done:
 - Check the runtime_status of an interface driver and validate the
   suspend current of a module.

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: bundle: add activate and deactivate
David Lin [Thu, 14 Jul 2016 20:13:00 +0000 (15:13 -0500)]
greybus: bundle: add activate and deactivate

AP shall send the Bundle Activate Operation to power on a bundle, and
send the Bundle Deactivate Request after closing all the associated
connections for power down.

Testing Done:
 - Check for the return code of the bundle activate and deactivate
  operation sent

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: es2: fix arpc response lookups
Johan Hovold [Thu, 14 Jul 2016 17:55:00 +0000 (12:55 -0500)]
greybus: es2: fix arpc response lookups

Fix arpc response lookups that were truncating the 16-bit response id to
8-bit, something which would have lead to all arpc calls timing out
after the 256th request.

Testing done: Enumerated and ejected a module on EVT2.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: es2: Fix 'make check' warnings with arpc
Viresh Kumar [Thu, 14 Jul 2016 17:18:00 +0000 (12:18 -0500)]
greybus: es2: Fix 'make check' warnings with arpc

This is what I got:

greybus/es2.c:1130:29: warning: restricted __le16 degrades to integer
greybus/es2.c:1140:22: warning: incorrect type in assignment (different base types)
greybus/es2.c:1140:22:    expected restricted __le16 [usertype] id
greybus/es2.c:1140:22:    got unsigned short [unsigned] [usertype] <noident>
greybus/es2.c:1162:52: warning: incorrect type in argument 8 (different base types)
greybus/es2.c:1162:52:    expected unsigned short [unsigned] [usertype] size
greybus/es2.c:1162:52:    got restricted __le16 [usertype] size
greybus/es2.c:1164:31: warning: restricted __le16 degrades to integer
greybus/es2.c:1253:34: warning: incorrect type in argument 2 (different base types)
greybus/es2.c:1253:34:    expected unsigned char [unsigned] [usertype] id
greybus/es2.c:1253:34:    got restricted __le16 [usertype] id

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: audio: Maintain proper codec state during shutdown sequence.
Vaibhav Agarwal [Tue, 12 Jul 2016 09:56:00 +0000 (04:56 -0500)]
greybus: audio: Maintain proper codec state during shutdown sequence.

During shutdown sequence, in case all modules are already removed,
codec state is not updated. Though it's not causing any harm for now,
but it's good to maintain proper codec state. Fix this.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: audio: Fix incorrect codec state modification
Vaibhav Agarwal [Tue, 12 Jul 2016 09:56:00 +0000 (04:56 -0500)]
greybus: audio: Fix incorrect codec state modification

In case module is removed dynamically with ongoing playback, during
module cleanup codec state is mistakenly modified. State should be
modified for module only. Fix this.

Fixes: 76414cb499b7 ("audio: Use single codec driver
registration")

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: es2: fix arpc return value
Johan Hovold [Wed, 13 Jul 2016 14:34:00 +0000 (09:34 -0500)]
greybus: es2: fix arpc return value

ARPC should return 0 on success, but instead was returning the number of
jiffies left until the timeout.

This caused cport_reset() to report an error and an incorrect error
message to be printed when disabling a connection.

Reported-by: Alex Elder <elder@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: Alex Elder <elder@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: es2: Implement APBridgeA RPC (ARPC)
Alexandre Bailon [Thu, 7 Jul 2016 12:41:00 +0000 (07:41 -0500)]
greybus: es2: Implement APBridgeA RPC (ARPC)

Implement ARPC. In first time, we are going to use it to
implement new request but the goal is to update all existing vendor
request to use ARPC.

In addition, Convert the current USB Vendor request for CPort Reset
to ARPC so that we can be sure that the port has been fully reset
by the time the request completes.

Testing Done:
  AP can reset APBA Cports by using the ARPC command.
  In addition, tested with a hacked firmware that cause error during
  the Cport reset, and Greybus printed the error "failed to reset cport".

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: es2: Add a new bulk in endpoint for APBridgeA RPC
Alexandre Bailon [Thu, 7 Jul 2016 12:41:00 +0000 (07:41 -0500)]
greybus: es2: Add a new bulk in endpoint for APBridgeA RPC

Add a new bulk in endpoint in order to get RPC status
from APbridgeA without to have to poll on control endpoint.

So the new endpoint layout is:
EP0: control EP
EP1 and EP2: muxed endpoints (bulk in and out)
EP3 to EP14: direct muxed endpoints (bulk in and out)
EP15: ARPC bulk in endpoint

Note:
This patch is allocating ARPC URBs but does nothing with them.
The following patch will use them.

Testing Done:
  Tested with an APBridgeA enumerating 16 endpoints.
  Kernel doesn't print Not enough endpoints found in device, aborting!

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: interface: send deactivate prepare when interface is disabled
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: interface: send deactivate prepare when interface is disabled

The AP Interface shall exchange a Greybus Control Interface Deactivate
Prepare Operation with the Interface being powered down.

Testing Done:
 - Check for the return code after sending the deactivate prepare operation

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: control: add connection suspend and resume calls
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: control: add connection suspend and resume calls

Adds function calls for handling control connection suspend and resume,
for now all they do is disable and enable control connection.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: interface: implement unipro link hibernate call
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: interface: implement unipro link hibernate call

Adds AP implementation of unipro link hibernation set power mode call
needed for proper cport closure and interface suspend and power off
transition.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: svc: add power mode call for link hibernation
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: svc: add power mode call for link hibernation

Due to when using set_power_mode to hibernate a link, it won't trigger a
POWERMODEIND event, hence the hard-coded GB_SVC_SETPWRM_PWR_OK would be
returned and it should also be considered as successful result code for
link hibernation. Therefore, adding this set_power_mode_hibernate
function to separate the two calls in order to check with the correct
result code.

Testing Done:
 - Suspend an Interface and observe no set power mode error.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: svc: add interface resume operation
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: svc: add interface resume operation

Add the AP implementation for the Greybus SVC Interface Resume
Operation. This operation allows the AP to request the SVC to resume an
Interface which was previously SUSPENDED, allowing it to later be
ENUMERATED.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: control: add interface hibernate abort operation
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: control: add interface hibernate abort operation

Add the AP implementation for the Greybus Control Hibernate Abort
Operation. AP may use this Operation to abort a previous Control
Interface Suspend or Control Interface Deactivate Prepare Operation.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: control: add interface deactivate prepare operation
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: control: add interface deactivate prepare operation

Add the AP implementation for the Greybus Control Interface Deactivate
Prepare Operation. AP uses this Operation during the Power Down
transition to request the bridge to power down after it detects a
subsequent UniPro link hibernation.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
7 years agogreybus: control: add interface suspend prepare operation
David Lin [Fri, 8 Jul 2016 03:07:00 +0000 (22:07 -0500)]
greybus: control: add interface suspend prepare operation

Add the AP implementation for the Greybus Control Interface Suspend
Prepare Operation. AP uses this Operation during the Suspend transition
to request the Interface to enter a low-power mode after it detects a
subsequent UniPro link hibernation.

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>