remoteproc: Allow for individual remoteproc initialization

Existing rproc_init() api tries to initialize all available
remoteproc devices. This will fail when there is dependency
among available remoteprocs. So introduce a separate api
that allows to initialize remoteprocs individually based
on id.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

drivers/remoteproc/rproc-uclass.c

@@ -272,6 +272,25 @@ int rproc_init(void)
 	return ret;
 }
 
+int rproc_dev_init(int id)
+{
+	struct udevice *dev = NULL;
+	int ret;
+
+	ret = uclass_get_device_by_seq(UCLASS_REMOTEPROC, id, &dev);
+	if (ret) {
+		debug("Unknown remote processor id '%d' requested(%d)\n",
+		      id, ret);
+		return ret;
+	}
+
+	ret = device_probe(dev);
+	if (ret)
+		debug("%s: Failed to initialize - %d\n", dev->name, ret);
+
+	return ret;
+}
+
 int rproc_load(int id, ulong addr, ulong size)
 {
 	struct udevice *dev = NULL;

include/remoteproc.h

@@ -86,6 +86,14 @@ struct dm_rproc_ops {
 int rproc_init(void);
 
 /**
+ * rproc_dev_init() - Initialize a remote proc device based on id
+ * @id:		id of the remote processor
+ *
+ * Return: 0 if all ok, else appropriate error value.
+ */
+int rproc_dev_init(int id);
+
+/**
  * rproc_is_initialized() - check to see if remoteproc devices are initialized
  *
  * Return: 0 if all devices are initialized, else appropriate error value.
@@ -150,6 +158,7 @@ int rproc_ping(int id);
 int rproc_is_running(int id);
 #else
 static inline int rproc_init(void) { return -ENOSYS; }
+static inline int rproc_dev_init(int id) { return -ENOSYS; }
 static inline bool rproc_is_initialized(void) { return false; }
 static inline int rproc_load(int id, ulong addr, ulong size) { return -ENOSYS; }
 static inline int rproc_start(int id) { return -ENOSYS; }