Messages in this thread Patch in this message | | | From | Siddharth Gupta <> | Subject | [PATCH v5 2/2] remoteproc: core: Register the character device interface | Date | Wed, 29 Jul 2020 10:40:01 -0700 |
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Add the character device during rproc_add. This would create a character device node at /dev/remoteproc<index>. Userspace applications can interact with the remote processor using this interface.
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org> Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org> --- drivers/remoteproc/remoteproc_core.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 277d3bf..7f90eee 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1986,6 +1986,11 @@ int rproc_add(struct rproc *rproc) /* create debugfs entries */ rproc_create_debug_dir(rproc); + /* add char device for this remoteproc */ + ret = rproc_char_device_add(rproc); + if (ret < 0) + return ret; + /* * Remind ourselves the remote processor has been attached to rather * than booted by the remoteproc core. This is important because the @@ -2262,6 +2267,7 @@ int rproc_del(struct rproc *rproc) mutex_unlock(&rproc->lock); rproc_delete_debug_dir(rproc); + rproc_char_device_remove(rproc); /* the rproc is downref'ed as soon as it's removed from the klist */ mutex_lock(&rproc_list_mutex); @@ -2430,6 +2436,7 @@ static int __init remoteproc_init(void) { rproc_init_sysfs(); rproc_init_debugfs(); + rproc_init_cdev(); rproc_init_panic(); return 0; -- Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
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