Merge branch 'rproc-linux-4.19.y' of git://git.ti.com/rpmsg/remoteproc into rpmsg-ti-linux-4.19.y

Pull in the updated remoteproc feature branch that adds a new sysfs
file 'name' to allow userspace to easily identify a remoteproc. An
equivalent file was already present in debugfs as well, but sysfs
provides a more standardized userspace interface since debugfs is
optional.

* 'rproc-linux-4.19.y' of git://git.ti.com/rpmsg/remoteproc:
  remoteproc: Add a sysfs interface for name

Signed-off-by: Suman Anna <s-anna@ti.com>

Documentation/ABI/testing/sysfs-class-remoteproc

@@ -48,3 +48,13 @@ Description:	Remote processor state
 
 		Writing "stop" will attempt to halt the remote processor and
 		return it to the "offline" state.
+
+What:		/sys/class/remoteproc/.../name
+Date:		August 2019
+KernelVersion:	5.4
+Contact:	Suman Anna <s-anna@ti.com>
+Description:	Remote processor name
+
+		Reports the name of the remote processor. This can be used by
+		userspace in exactly identifying a remote processor and ease
+		up the usage in modifying the 'firmware' or 'state' files.

drivers/remoteproc/remoteproc_sysfs.c

@@ -115,9 +115,20 @@ static ssize_t state_store(struct device *dev,
 }
 static DEVICE_ATTR_RW(state);
 
+/* Expose the name of the remote processor via sysfs */
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct rproc *rproc = to_rproc(dev);
+
+	return sprintf(buf, "%s\n", rproc->name);
+}
+static DEVICE_ATTR_RO(name);
+
 static struct attribute *rproc_attrs[] = {
 	&dev_attr_firmware.attr,
 	&dev_attr_state.attr,
+	&dev_attr_name.attr,
 	NULL
 };