[ARM] 5127/1: Core MFD support

This patch provides a common subdevice registration system for MFD type
chips, using platfrom device.

Signed-off-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
new file mode 100644
index 00000000000..bb3dd054592
--- /dev/null
+++ b/include/linux/mfd/core.h
@@ -0,0 +1,55 @@
+#ifndef MFD_CORE_H
+#define MFD_CORE_H
+/*
+ * drivers/mfd/mfd-core.h
+ *
+ * core MFD support
+ * Copyright (c) 2006 Ian Molton
+ * Copyright (c) 2007 Dmitry Baryshkov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/platform_device.h>
+
+/*
+ * This struct describes the MFD part ("cell").
+ * After registration the copy of this structure will become the platform data
+ * of the resulting platform_device
+ */
+struct mfd_cell {
+        const char              *name;
+
+        int                     (*enable)(struct platform_device *dev);
+        int                     (*disable)(struct platform_device *dev);
+        int                     (*suspend)(struct platform_device *dev);
+        int                     (*resume)(struct platform_device *dev);
+
+        void                    *driver_data; /* driver-specific data */
+
+        /*
+         * This resources can be specified relatievly to the parent device.
+         * For accessing device you should use resources from device
+         */
+        int                     num_resources;
+        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,
+                int irq_base);
+
+extern void mfd_remove_devices(struct platform_device *parent);
+
+#endif