new helper to create platform devices with dma mask

compared to the most powerful and already existing helper (namely
platform_device_register_resndata) this allows to specify a dma_mask.
To make eventual extensions later more easy, a struct holding the used
information is created instead of passing the information by function
parameters.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 46 insertions, 2 deletions

diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 27bb05aae70d..651a066686ac 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -49,10 +49,54 @@ extern struct resource *platform_get_resource_byname(struct platform_device *, u
 extern int platform_get_irq_byname(struct platform_device *, const char *);
 extern int platform_add_devices(struct platform_device **, int);
 
-extern struct platform_device *platform_device_register_resndata(
+struct platform_device_info {
+                struct device *parent;
+
+                const char *name;
+                int id;
+
+                const struct resource *res;
+                unsigned int num_res;
+
+                const void *data;
+                size_t size_data;
+                u64 dma_mask;
+};
+extern struct platform_device *platform_device_register_full(
+                struct platform_device_info *pdevinfo);
+
+/**
+ * platform_device_register_resndata - add a platform-level device with
+ * resources and platform-specific data
+ *
+ * @parent: parent device for the device we're adding
+ * @name: base name of the device we're adding
+ * @id: instance id
+ * @res: set of resources that needs to be allocated for the device
+ * @num: number of resources
+ * @data: platform specific data for this platform device
+ * @size: size of platform specific data
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
+ */
+static inline struct platform_device *platform_device_register_resndata(
                 struct device *parent, const char *name, int id,
                 const struct resource *res, unsigned int num,
-                const void *data, size_t size);
+                const void *data, size_t size) {
+
+        struct platform_device_info pdevinfo = {
+                .parent = parent,
+                .name = name,
+                .id = id,
+                .res = res,
+                .num_res = num,
+                .data = data,
+                .size_data = size,
+                .dma_mask = 0,
+        };
+
+        return platform_device_register_full(&pdevinfo);
+}
 
 /**
  * platform_device_register_simple - add a platform-level device and its resources