slim_msm: Report flow-error and mask apps slimbus port interrupts

Apps side slimbus ports may overflow/underflow if BAM pipes connected
to those ports don't have descriptors scheduled.
Report such errors and mask the port interrupts until BAM pipes have
descriptors scheduled to avoid interrupts firing multiple times.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_msm: Signal client's completion for per transfer notification

Slimbus ports are connected to BAM pipes and ports inform the pipe
when descriptor's data transfer is done. Clients queue a completion
per descrptor when that descriptor is processed. This completion will
get overwritten if client queues multiple descriptors. Use
per-transfer user-data as client's completion to avoid this problem.
This also reduces controller-driver involvement in data transfer.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_msm: Optimize slimbus data port's connection with BAM pipe

Slimbus data port on apps side can be connected in any diretion (as
source, or as destination). BAM pipe connected to that port should
only be disconnected/reconnected if this port direction changes.
This helps with reducing calls to connect/disconnect BAM pipes.
Allocate descriptors to avoid getting descriptor-space from the
common pool and free them only when the port is deallocated.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slimbus: Fix port allocation and deallocation for manager's ports

Since Manager's ports don't have any direction when allocated, make
sure the direction is not checked when connect-port is called on a
manager port. Ensure that controller's port resourced are freed-up
when dealloc_mgrports is called.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_msm: Get platform-specific information from platform-data

Number of pipes available to application processor for data channels,
and product-code field of enumeration address needed for setting
these pipes can be different for different platforms.
Store this platform-specific information in platform-data, and get
it from Device-Tree if applicable.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slimbus: Provide framer-booted notification to slimbus device drivers

When slimbus resets (due to bus reset sequence, or after it shuts down
and comes up), framer boots up and starts clocking the bus.
Devices on the bus may be in undefined state at that time. Callback
is provided to slimbus device drivers so that controller can report
framer-booted notification so that drivers can take necessary action
to put devices in reset state so that they can acquire sync, report
present, and be operational.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_msm: ngd: Return success for channel removal during ADSP SSR

Slimbus master component resides on ADSP when this driver is used.
Wehn ADSP restarts, slimbus component goes down and bus is not
operational until it comes back up. During restart, slimbus clients
are notified since their device goes down, and the clients remove
channels and/or disconnect ports. Since bus is not operational,
return success for channel removal/port disconnection calls so that
the channel, port state is consistent with HW (not active, removed)

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_ngd: Return success for resource removal requests if HW restarts

Channel and ports are removed when HW restarts. Return success to
client channel removal, port disconnection requests when slimbus HW
is restarting.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_msm: Add support for external MDM restart

If external MDM restarts when MDM slimbus channels are active, it
is possible that the MDM framer was clocking the bus, and ADSP was
not active. Make sure apps wakes up ADSP and checks the framer status
so that slimbus is clocked by ADSP instead of MDM, and communication
over slimbus is restored.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: dts: msm: Add pipe-ownership and product-code for slimbus in 8974

To setup data channels from application processor with at least one
endpoint in memory, slimbus driver requires information about pipes
owned by the apps processor, and the product-code of the controller.
Add this information to Device-Tree for MSM slimbus controller on
8974.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slimbus: Fix logical address notification mechanism

Make sure device-up/down notifications don't involve race condition,
and sub-system restart in such cases is handled gracefully

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_ngd: Handle error flags before handling SENT flag

It's possible that error flags were set alongwith SENT flag for
TX transaction status. In such a scenario, error flag status should
be handled (and SENT flag should be cleared). Move error-flag
handling ahead of SENT flag handling to avoid interrupt being called
twice, and completion being set twice.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slimbus: Enable clients to send user messages to devices.

Slimbus protocol allows user messages of destination referred, or
source referred type to be sent to a slimbus device.
Provide framework to support such messages. Note that, controller
may not support all user messages.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_ngd: Support REPEAT_CHANGE_VALUE user message

REPEAT_CHANGE_VALUE user message is used to transfer high amount of
messaging data efficiently.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slimbus: Use physical address type where physical address is used

Use physical address type for buffers using physical address.
(e.g. interaction with data-mover engine)

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim_ngd: Use QMI server up notification instead of APR for probing

Slimbus QMI-server can reside on any other remote processor.
Avoid depedency on APR (for APR state) by utilizing QMI server-up
notification for slimbus hardware initialization from apps processor.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
slim-ngd: change log level of slave_notify completion

Change the logging of slave_notify completion to debug to avoid
excessive logging.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Slim_ngd: Modify waiting mechanism in kthread

wait_for_completion_timeout() is not a good option in
kthread as it leads to scheduling the kthread on the every timeout.
Hence modify it to wait_for_completion() from
wait_for_completion_timeout().

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: dts: enable mdm restart.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
lge: remove console enabler function call, with a recent config change this function is no longer in the Kernel tree.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>