mhi: pci_generic: Add health-check

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If the modem crashes for any reason, we may not be able to detect
it at MHI level (MHI registers not reachable anymore).

This patch implements a health-check mechanism to check regularly
that device is alive (MHI layer can communicate with). If device
is not alive (because a crash or unexpected reset), the recovery
procedure is triggered.

Tested successfully with Telit FN980m module.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

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Loic Poulain 2021-01-04 17:14:56 +01:00 • committed by Manivannan Sadhasivam

parent b012ee6bfe

commit 8562d4fe34

1 changed files with 35 additions and 0 deletions

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drivers/bus/mhi/pci_generic.c

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