diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2020-07-14 13:50:28 -0600 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-07-16 23:06:07 -0700 |
| commit | a6a4f2857524007848f7957af432cddb4d43b593 (patch) | |
| tree | cc73de2354e286fdf492744c58844875bc240f78 | |
| parent | e2e5c55eed8023ecfbf4c9b623ef7dec343d1845 (diff) | |
remoteproc: Add new attach() remoteproc operation
Add an new attach() operation in order to properly deal with
scenarios where the remoteproc core needs to attach to a
remote processor that has been booted by another entity.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Link: https://lore.kernel.org/r/20200714195035.1426873-3-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
| -rw-r--r-- | drivers/remoteproc/remoteproc_internal.h | 8 | ||||
| -rw-r--r-- | include/linux/remoteproc.h | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h index 4ba7cb59d3e8..fc710866f8ce 100644 --- a/drivers/remoteproc/remoteproc_internal.h +++ b/drivers/remoteproc/remoteproc_internal.h @@ -79,6 +79,14 @@ static inline int rproc_unprepare_device(struct rproc *rproc) return 0; } +static inline int rproc_attach_device(struct rproc *rproc) +{ + if (rproc->ops->attach) + return rproc->ops->attach(rproc); + + return 0; +} + static inline int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw) { diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index 21182ad2d059..bf6a310ba870 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -359,6 +359,7 @@ enum rsc_handling_status { * @unprepare: unprepare device after stop * @start: power on the device and boot it * @stop: power off the device + * @attach: attach to a device that his already 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) @@ -379,6 +380,7 @@ struct rproc_ops { int (*unprepare)(struct rproc *rproc); int (*start)(struct rproc *rproc); int (*stop)(struct rproc *rproc); + int (*attach)(struct rproc *rproc); void (*kick)(struct rproc *rproc, int vqid); void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len); int (*parse_fw)(struct rproc *rproc, const struct firmware *fw); |