soc: qcom: smd: Represent smd edges as devices

By representing each edge as its own device the channels are no longer
tied to being parented by the same smd device and as such an edge can
live as children of e.g. remoteproc instances.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/linux/soc/qcom/smd.h b/include/linux/soc/qcom/smd.h
index 324b1decfffb..f148e0ffbec7 100644
--- a/include/linux/soc/qcom/smd.h
+++ b/include/linux/soc/qcom/smd.h
@@ -61,6 +61,10 @@ void qcom_smd_set_drvdata(struct qcom_smd_channel *channel, void *data);
 int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len);
 
 
+struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent,
+                                             struct device_node *node);
+int qcom_smd_unregister_edge(struct qcom_smd_edge *edge);
+
 #else
 
 static inline int qcom_smd_driver_register(struct qcom_smd_driver *drv)
@@ -111,6 +115,20 @@ static inline int qcom_smd_send(struct qcom_smd_channel *channel,
         return -ENXIO;
 }
 
+static inline struct qcom_smd_edge *
+qcom_smd_register_edge(struct device *parent,
+                       struct device_node *node)
+{
+        return ERR_PTR(-ENXIO);
+}
+
+static inline int qcom_smd_unregister_edge(struct qcom_smd_edge *edge)
+{
+        /* This shouldn't be possible */
+        WARN_ON(1);
+        return -ENXIO;
+}
+
 #endif
 
 #define module_qcom_smd_driver(__smd_driver) \