mfd: add platform_data to mfd_cell

Adding platform_data to mfd_cell allows passing of platform data directly
to the platform_device created for each cell and thus reuse of existing
drivers.
On the other side it can be used as a hook to mfd_cell itself
removing the need in mfd_get_cell method.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
index b7cbb9968339..ea45d4a5a2ac 100644
--- a/include/linux/mfd/core.h
+++ b/include/linux/mfd/core.h
@@ -29,7 +29,13 @@ struct mfd_cell {
         int                     (*suspend)(struct platform_device *dev);
         int                     (*resume)(struct platform_device *dev);
 
-        void                    *driver_data; /* driver-specific data */
+        /* driver-specific data for MFD-aware "cell" drivers */
+        void                    *driver_data;
+
+        /* platform_data can be used to either pass data to "generic"
+           driver or as a hook to mfd_cell for the "cell" drivers */
+        void                    *platform_data;
+        size_t                  data_size;
 
         /*
          * This resources can be specified relatievly to the parent device.
@@ -39,11 +45,6 @@ struct mfd_cell {
         const struct resource   *resources;
 };
 
-static inline struct mfd_cell *mfd_get_cell(struct platform_device *pdev)
-{
-        return (struct mfd_cell *)pdev->dev.platform_data;
-}
-
 extern int mfd_add_devices(struct platform_device *parent,
                            const struct mfd_cell *cells, int n_devs,
                            struct resource *mem_base,