| Message ID | 20201126210642.897302-15-mathieu.poirier@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | remoteproc: Add support for detaching from rproc | expand |
On 11/26/20 10:06 PM, Mathieu Poirier wrote: > This patch introduces the capability to detach a remote processor > that has been attached to or booted by the remoteproc core. For > that to happen a rproc::ops::detach() operation need to be > available. > > 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> Thanks, Arnaud > --- > drivers/remoteproc/remoteproc_cdev.c | 6 ++++++ > drivers/remoteproc/remoteproc_sysfs.c | 6 ++++++ > 2 files changed, 12 insertions(+) > > diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c > index 61541bc7d26c..f7645f289563 100644 > --- a/drivers/remoteproc/remoteproc_cdev.c > +++ b/drivers/remoteproc/remoteproc_cdev.c > @@ -43,6 +43,12 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_ > return -EINVAL; > > ret = rproc_shutdown(rproc); > + } else if (!strncmp(cmd, "detach", len)) { > + if (rproc->state != RPROC_RUNNING && > + rproc->state != RPROC_ATTACHED) > + return -EINVAL; > + > + ret = rproc_detach(rproc); > } else { > dev_err(&rproc->dev, "Unrecognized option\n"); > ret = -EINVAL; > diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c > index 7d281cfe3e03..5a239df5877e 100644 > --- a/drivers/remoteproc/remoteproc_sysfs.c > +++ b/drivers/remoteproc/remoteproc_sysfs.c > @@ -207,6 +207,12 @@ static ssize_t state_store(struct device *dev, > return -EINVAL; > > ret = rproc_shutdown(rproc); > + } else if (sysfs_streq(buf, "detach")) { > + if (rproc->state != RPROC_RUNNING && > + rproc->state != RPROC_ATTACHED) > + return -EINVAL; > + > + ret = rproc_detach(rproc); > } else { > dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); > ret = -EINVAL; >
diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c index 61541bc7d26c..f7645f289563 100644 --- a/drivers/remoteproc/remoteproc_cdev.c +++ b/drivers/remoteproc/remoteproc_cdev.c @@ -43,6 +43,12 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_ return -EINVAL; ret = rproc_shutdown(rproc); + } else if (!strncmp(cmd, "detach", len)) { + if (rproc->state != RPROC_RUNNING && + rproc->state != RPROC_ATTACHED) + return -EINVAL; + + ret = rproc_detach(rproc); } else { dev_err(&rproc->dev, "Unrecognized option\n"); ret = -EINVAL; diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index 7d281cfe3e03..5a239df5877e 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -207,6 +207,12 @@ static ssize_t state_store(struct device *dev, return -EINVAL; ret = rproc_shutdown(rproc); + } else if (sysfs_streq(buf, "detach")) { + if (rproc->state != RPROC_RUNNING && + rproc->state != RPROC_ATTACHED) + return -EINVAL; + + ret = rproc_detach(rproc); } else { dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); ret = -EINVAL;