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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

Add the AP implementation for the Greybus Control Bundle Deactivate
Operation. This operation requests a Bundle to enter the BUNDLE_OFF
state. All Connections associated with the Bundle must be closed prior
sending this operation.

Add the AP implementation for the Greybus Control Bundle Activate
Operation. This operation requests a specific Bundle to transition from
the BUNDLE_OFF state to the BUNDLE_ACTIVE state.

[elder@linaro.org: fixed a typo pointed out by Johan]
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>

Add the AP implementation for the Greybus Control Bundle Suspend
Operation. This Operation is used to request a Bundle to enter the
BUNDLE_SUSPENDED state, all Connections associated with this Bundle must
be closed before issuing this operation.

Add the AP implementation for the Greybus Control Bundle Resume
Operation. This operation request a specific Bundle to transition from
the BUNDLE_SUSPENDED state to the BUNDLE_ACTIVE state.
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>