Fix dlkm compilation errors that are due to the use of -Werror
flags used by the build system.
Change-Id: I5e1e9bc63c1361d73e4930aab123212717872ecb
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
Upon receiving a CP_IRQ, the current implementation waits for up to 200
milliseconds for the link polling to be enabled, before reading the
message from the sink. This wait is currently done in the DP HDCP
module's main event thread. However, polling mode is also enabled in the
same event thread upon a wakeup triggered by the HDCP engine. This can
be problematic if the CP_IRQ comes before link has been transitioned to
the polling mode. Such a sequence of event is easily seen when executing
HDCP 2.3 CTS test 1B-09 using Unigraf UCD-400 test equipment.
To address this, wait for the polling mode to be enabled from the CP_IRQ
handler context directly and invoke the event thread only for reading
the CP_IRQ message after the link has transitioned to polling mode.
In addition to the above change, increase the wait time for link to
transition to polling mode to 300ms. This is needed because, in the
current implementation there is a fixed delay of 200ms as part of the
call to the QSEECOM API to enable encryption after the authentication is
successful.
Change-Id: I0bdd4893bf63e6ae0fcda5dfb61f23e901061207
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
Add event logs to capture HDCP state transitions and errors.
Change-Id: Id82049b93eb2e8bf84faddebaa0959f8cda1c91f
Signed-off-by: poyewu <poyewu@codeaurora.org>
During suspend, there might be a chance that lib auth work is queued
but not yet started. So during pm cycle it might start execution
before host_init which can lead to noc error while accessing dp_aux
registers. To prevent that set abort flag to abort lib auth work and
set interrupts before host_deinit.
Change-Id: Ie2c3ac9b0846644d3c2b37f410c341659b030c16
Signed-off-by: Rajat Gupta <rajatgu@codeaurora.org>
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
The min_enc_lvl update is asynchronous to the hdcp2x state machine and
can come anytime. In an instance where authentication with the sink is
continuously failing, the enforce engine blocks the hdcp22 secure content
playback and resets the min enc lvl. This is causing the sde_hdcp_2x_main
to perform a send message operation out of sync with the current
authentication attempt. This is causing the state machine to go into bad
state by changing the next message id, sometimes causing a pagefault error
in the sde_hdcp_2x_main while cp_irq is in progress. This change will
proceed with the min_enc_lvl change only when the mainlink is hdcp2p2
authenticated.
Change-Id: I977ac3a083b9593f8f7e760d4e477d4af424d5c9
Signed-off-by: Sankeerth Billakanti <sbillaka@codeaurora.org>
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
The HDCP 2.3 specification added new timing
requirements for message read duration. Ensure
that these requirements are enforced in the DP
display layer.
Delay for a specification-allowed amount of time
before reading messages to ensure that sinks have
enough time to process messages and make their
replies available to read.
Change-Id: I40b210823a7cbaca6efc12abc4c8e8b98a10e071
Signed-off-by: Fuad Hossain <fhossain@codeaurora.org>
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
Adding prefixes for error, debug and info
messages in dp files. To enable debug logs
run "echo 0x100 > /sys/module/drm/parameters/debug"
CRs-Fixed: 2493739
Change-Id: Ibf509e837f527be6bff6b7a1c34b0cde2921b388
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>
The DP HDCP layer fails to wait on and clear its internal thread
upon an HDCP stop or failure. This can result in use after free
failures if a read or write over aux channel operation is already
queued.
Update the DP HDCP layer to stop and wait on kthread completion
upon HDCP failures, and clear the kthread command queue before
resuming kthread execution. Additionally, ensure the SDE HDCP
worker thread correctly starts and stops execution upon HDCP
enablement and disablement respectively.
Change-Id: I4218d7935f89416b5e5d74afd8f5d22e031b9a38
Signed-off-by: Christopher Braga <cbraga@codeaurora.org>
Commands to the HDCP protocol layer can fail or block if
executed when the system enters suspend or shutdown.
Protocol layer blockage will occur until the system returns
into a power on state, potentially resulting in deadlocks for
clients who synchronously wait on protocol layer completion.
Asynchronously handle all requests to the protocol module to
ensure that clients can make progress regardless of the state of
the underlying HDCP handler. When an already queued request is
received by the protocol module, that request will be rescheduled
to the back of the queue.
Change-Id: I658dd09a81f21037cd90bbaa5b7d73363472e0b0
Signed-off-by: Christopher Braga <cbraga@codeaurora.org>
This change brings msm display driver including sde,
dp, dsi, rotator, dsi pll and dp pll from base 4.19 kernel
project. It is first source code snapshot from base kernel project.
Change-Id: Iec864c064ce5ea04e170f24414c728684002f284
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>
