[PATCH v4 0/9] remoteproc: Add support for attaching with rproc

[Mathieu Poirier]

This fourth iteration implements a solution that is fairly different from
what was proposed in V3 and earlier versions.  Three aspects have been 
revisited:

1) Only the scenario where the remoteproc core is attaching to the remote
   processor is implemented.  Other scenarios where actions need to be 
   taken when the remote processor is stopped or crashes will be
   considered in subsequent versions.

2) The introduction of a new RPROC_DETACHED state to be set by platform
   drivers when needing to attach to an already running remote processor.

3) New functions are introduced to replicate the functionality provided by
   rproc_fw_boot() and rproc_start(), minus operations related to firmware
   management. 

Enhancement to the documentation has been left out intentionally until it
is agreed to move forward with this implementation.

Applies cleanly on rproc-next(7dcef3988eed) and will be rebased on v5.8-rc1
when it comes out in two weeks.

Thanks,
Mathieu

Mathieu Poirier (9):
  remoteproc: Add new RPROC_DETACHED state
  remoteproc: Add new attach() remoteproc operation
  remoteproc: Introducing function rproc_attach()
  remoteproc: Introducing function rproc_actuate()
  remoteproc: Introducing function rproc_validate()
  remoteproc: Refactor function rproc_boot()
  remoteproc: Refactor function rproc_trigger_auto_boot()
  remoteproc: Refactor function rproc_free_vring()
  remoteproc: Properly handle firmware name when attaching

 drivers/remoteproc/remoteproc_core.c     | 226 +++++++++++++++++++++--
 drivers/remoteproc/remoteproc_internal.h |   8 +
 drivers/remoteproc/remoteproc_sysfs.c    |  17 +-
 include/linux/remoteproc.h               |   9 +-
 4 files changed, 243 insertions(+), 17 deletions(-)

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2.20.1