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5 Commits (a2d0321dd532901ea64118ed5a752fa6e447d1da)

Author SHA1 Message Date
Linus Torvalds 961288108e rpmsg updates for v4.10
Argument validation in public functions, function stubs for COMPILE_TEST-ing
 clients, preparation for exposing rpmsg endponts to user space and minor
 Qualcomm SMD fixes.
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Merge tag 'rpmsg-v4.10' of git://github.com/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:
 "Argument validation in public functions, function stubs for
  COMPILE_TEST-ing clients, preparation for exposing rpmsg endponts
  to user space and minor Qualcomm SMD fixes"

* tag 'rpmsg-v4.10' of git://github.com/andersson/remoteproc:
  dt-binding: soc: qcom: smd: Add label property
  rpmsg: qcom_smd: Correct return value for O_NONBLOCK
  rpmsg: Provide function stubs for API
  rpmsg: Handle invalid parameters in public API
  rpmsg: Support drivers without primary endpoint
  rpmsg: Introduce a driver override mechanism
  rpmsg: smd: Reduce restrictions when finding channel
2016-12-13 08:52:45 -08:00
Bjorn Andersson 1d74e7ed5d rpmsg: qcom_smd: Correct return value for O_NONBLOCK
qcom_smd_send() should return -EAGAIN for non-blocking channels with
insufficient space, so that we can propagate this event to user space.

Fixes: 53e2822e56 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-12-08 07:58:05 -08:00
Bjorn Andersson 8fc947230f rpmsg: smd: Expose edge registration functions
The edge registration functions is to be used from a remoteproc driver
to register and unregister an edge as the remote processor comes and
goes.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-11-14 21:52:14 -08:00
Bjorn Andersson 66dca399e6 rpmsg: smd: Reduce restrictions when finding channel
SMD channels are created by the remotes in "opening" state, but
sometimes as we close and try to reopen them they linger in closing
state.

Following the search for a matching channel the create_ept() will verify
that the channel is in a suitable state, so we can lax the restrictions
of the search function to work around above difference in behaviour.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-10-31 15:40:40 -07:00
Bjorn Andersson 53e2822e56 rpmsg: Introduce Qualcomm SMD backend
This introduces a new rpmsg backend for the Qualcomm SMD system,
allowing communication with various remote processors found in Qualcomm
platforms. The implementation is based on, and intends to replace,
drivers/soc/qcom/smd.c with the necessary adaptions for fitting with the
rpmsg core.

Based on original work by Sricharan R <sricharan@codeaurora.org>

Cc: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-08 22:15:26 -07:00