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>

2 files changed, 5 insertions, 1 deletions

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 50207700140c..ad4e4d16a36a 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -32,7 +32,7 @@ static int mfd_add_device(struct platform_device *parent,
         pdev->dev.parent = &parent->dev;
 
         ret = platform_device_add_data(pdev,
-                        cell, sizeof(struct mfd_cell));
+                        cell->platform_data, cell->data_size);
         if (ret)
                 goto fail_device;
 
diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 94e55e8e7ce6..9908aaa4881a 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -466,6 +466,10 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
                 tc6393xb_attach_irq(dev);
 
         tc6393xb_cells[TC6393XB_CELL_NAND].driver_data = tcpd->nand_data;
+        tc6393xb_cells[TC6393XB_CELL_NAND].platform_data =
+                &tc6393xb_cells[TC6393XB_CELL_NAND];
+        tc6393xb_cells[TC6393XB_CELL_NAND].data_size =
+                sizeof(tc6393xb_cells[TC6393XB_CELL_NAND]);
 
         retval = mfd_add_devices(dev,
                         tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),