1 files changed, 44 insertions, 1 deletions

diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index 7442f2a57039..e62c61a4afa9 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -19,7 +19,7 @@
 #ifndef __LINUX_HOST1X_H
 #define __LINUX_HOST1X_H
 
-#include <linux/kref.h>
+#include <linux/device.h>
 #include <linux/types.h>
 
 enum host1x_class {
@@ -37,6 +37,7 @@ struct host1x_client_ops {
 
 struct host1x_client {
         struct list_head list;
+        struct device *parent;
         struct device *dev;
 
         const struct host1x_client_ops *ops;
@@ -230,4 +231,46 @@ void host1x_job_put(struct host1x_job *job);
 int host1x_job_pin(struct host1x_job *job, struct device *dev);
 void host1x_job_unpin(struct host1x_job *job);
 
+/*
+ * subdevice probe infrastructure
+ */
+
+struct host1x_device;
+
+struct host1x_driver {
+        const struct of_device_id *subdevs;
+        struct list_head list;
+        const char *name;
+
+        int (*probe)(struct host1x_device *device);
+        int (*remove)(struct host1x_device *device);
+};
+
+int host1x_driver_register(struct host1x_driver *driver);
+void host1x_driver_unregister(struct host1x_driver *driver);
+
+struct host1x_device {
+        struct host1x_driver *driver;
+        struct list_head list;
+        struct device dev;
+
+        struct mutex subdevs_lock;
+        struct list_head subdevs;
+        struct list_head active;
+
+        struct mutex clients_lock;
+        struct list_head clients;
+};
+
+static inline struct host1x_device *to_host1x_device(struct device *dev)
+{
+        return container_of(dev, struct host1x_device, dev);
+}
+
+int host1x_device_init(struct host1x_device *device);
+int host1x_device_exit(struct host1x_device *device);
+
+int host1x_client_register(struct host1x_client *client);
+int host1x_client_unregister(struct host1x_client *client);
+
 #endif