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remoteproc: Add new detach() remoteproc operation

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Add an new detach() operation in order to support scenarios where
the remoteproc core is going away but the remote processor is
kept operating.  This could be the case when the system is
rebooted or when the platform driver is removed.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Link: https://lore.kernel.org/r/20210312162453.1234145-9-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Mathieu Poirier 2021-03-12 09:24:44 -07:00 • committed by Bjorn Andersson
parent 6e20a05104
commit 7f3bd0c019
1 changed files with 2 additions and 0 deletions
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2
include/linux/remoteproc.h
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@ -363,6 +363,7 @@ enum rsc_handling_status {
* @start: power on the device and boot it
* @stop: power off the device
* @attach: attach to a device that his already powered up
* @detach: detach from a device, leaving it powered up
* @kick: kick a virtqueue (virtqueue id given as a parameter)
* @da_to_va: optional platform hook to perform address translations
* @parse_fw: parse firmware to extract information (e.g. resource table)
@ -387,6 +388,7 @@ struct rproc_ops {
int (*start)(struct rproc *rproc);
int (*stop)(struct rproc *rproc);
int (*attach)(struct rproc *rproc);
int (*detach)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);
void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);