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Date: Wed, 2 Dec 2020 19:13:30 +0100 From: Arnaud POULIQUEN <arnaud.pouliquen@...com> To: Mathieu Poirier <mathieu.poirier@...aro.org>, "ohad@...ery.com" <ohad@...ery.com>, "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>, "robh+dt@...nel.org" <robh+dt@...nel.org> CC: "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v3 07/15] remoteproc: Add new detach() remoteproc operation Hi Mathieu On 11/26/20 10:06 PM, Mathieu Poirier wrote: > 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@...aro.org> > Reviewed-by: Peng Fan <peng.fan@....com> Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@...com> Thanks, Arnaud > --- > include/linux/remoteproc.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h > index 9be112b5c09d..da15b77583d3 100644 > --- a/include/linux/remoteproc.h > +++ b/include/linux/remoteproc.h > @@ -361,6 +361,7 @@ 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) > @@ -382,6 +383,7 @@ 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); > int (*parse_fw)(struct rproc *rproc, const struct firmware *fw); >
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