[0/3] Defer TI's Remoteproc's Probe until Mailbox is Probed

Message

Beleswar Prasad Padhi May 30, 2024, 9:07 a.m. UTC

Hello All,

This series adds deferred probe functionality in the TI's Remoteproc
drivers. The remoteproc drivers are dependent on the omap-mailbox driver
for mbox functionalities. Sometimes, the remoteproc driver could be
probed before the mailbox driver leading to rproc boot failures. Thus,
defer the probe routine of remoteproc drivers until mailbox driver is
probed by checking the mbox_request_channel handle in probe. 

Also, use the acquired mbox handle in probe during rproc start/attach
routine instead of re-requesting. Do not free mbox handle during
stop/detach routine or error paths. This makes our k3_rproc_attach() &
k3_rproc_detach() functions NOP.

Also, use the devm_rproc_alloc() helper to automatically free created
rprocs incase of a probe defer.

Beleswar Padhi (3):
  remoteproc: k3-r5: Use devm_rproc_alloc() helper
  remoteproc: k3-r5: Acquire mailbox handle during probe
  remoteproc: k3-dsp: Acquire mailbox handle during probe routine

 drivers/remoteproc/ti_k3_dsp_remoteproc.c | 67 +++++++--------------
 drivers/remoteproc/ti_k3_r5_remoteproc.c  | 72 ++++++++---------------
 2 files changed, 44 insertions(+), 95 deletions(-)