This patch adds a set remote state SCM API.  This will be used by the
Venus and GPU subsystems to set state on the remote processors.

This work was based on two patch sets by Jordan Crouse and Stanimir
Varbanov.
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

PAS command 10 is used to assert and deassert the MSS reset via
TrustZone, expose this as a reset-controller to mimic the direct
access case.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

This adds the Peripheral Authentication Service (PAS) interface to the
Qualcomm SCM interface. The API is used to authenticate and boot a range
of external processors in various Qualcomm platforms.
Signed-off-by: NBjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

Add an implementation of the SCM interface that works on ARM64 SoCs.  This
is used by things like determine if we have HDCP support or not on the
system.
Signed-off-by: NKumar Gala <galak@codeaurora.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>

This patch converts the Qualcomm SCM driver to use the streaming DMA APIs
for communication buffers.  This is being done so that the
secure_flush_area call can be removed.  Using the DMA APIs will also make
the SCM32 symmetric to the coming SCM64 code.
Signed-off-by: NAndy Gross <andy.gross@linaro.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>

This patch moves the qcom_scm_remap_error function to the include file
where can be used by both the 32 and 64 bit versions of the code.
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NAndy Gross <agross@codeaurora.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

HDCP driver needs to check if secure environment supports HDCP.  If it's
supported, then it requires to program some registers through SCM.
Add qcom_scm_hdcp_available and qcom_scm_hdcp_req to support these
requirements.
Signed-off-by: NJilai Wang <jilaiw@codeaurora.org>
Signed-off-by: NKumar Gala <galak@codeaurora.org>

Split out the 32-bit SCM implementation into its own file to prep for
supporting a 64-bit/ARM64 implementation as well.  We create a simple shim
to ensure both versions conform to the same interface.
Signed-off-by: NKumar Gala <galak@codeaurora.org>