bus: mhi: ep: Add support for handling MHI_RESET

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Add support for handling MHI_RESET in MHI endpoint stack. MHI_RESET will
be issued by the host during shutdown and during error scenario so that
it can recover the endpoint device without restarting the whole device.

MHI_RESET handling involves resetting the internal MHI registers, data
structures, state machines, resetting all channels/rings and setting
MHICTRL.RESET bit to 0. Additionally the device will also move to READY
state if the reset was due to SYS_ERR.

Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

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Manivannan Sadhasivam 2021-11-29 15:00:07 +05:30

parent c6dba89242

commit 2ee735c173

2 changed files with 55 additions and 0 deletions

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53

drivers/bus/mhi/ep/main.c

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2

include/linux/mhi_ep.h

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