release/src-rt-6.x.4708/linux/linux-2.6.36/include/linux/mfd/core.h

   1 /*
   2  * drivers/mfd/mfd-core.h
   3  *
   4  * core MFD support
   5  * Copyright (c) 2006 Ian Molton
   6  * Copyright (c) 2007 Dmitry Baryshkov
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #ifndef MFD_CORE_H
  15 #define MFD_CORE_H
  16
  17 #include <linux/platform_device.h>
  18
  19 /*
  20  * This struct describes the MFD part ("cell").
  21  * After registration the copy of this structure will become the platform data
  22  * of the resulting platform_device
  23  */
  24 struct mfd_cell {
  25         const char              *name;
  26         int                     id;
  27
  28         int                     (*enable)(struct platform_device *dev);
  29         int                     (*disable)(struct platform_device *dev);
  30         int                     (*suspend)(struct platform_device *dev);
  31         int                     (*resume)(struct platform_device *dev);
  32
  33         /* driver-specific data for MFD-aware "cell" drivers */
  34         void                    *driver_data;
  35
  36         /* platform_data can be used to either pass data to "generic"
  37            driver or as a hook to mfd_cell for the "cell" drivers */
  38         void                    *platform_data;
  39         size_t                  data_size;
  40
  41         /*
  42          * This resources can be specified relatievly to the parent device.
  43          * For accessing device you should use resources from device
  44          */
  45         int                     num_resources;
  46         const struct resource   *resources;
  47 };
  48
  49 extern int mfd_add_devices(struct device *parent, int id,
  50                            const struct mfd_cell *cells, int n_devs,
  51                            struct resource *mem_base,
  52                            int irq_base);
  53
  54 extern void mfd_remove_devices(struct device *parent);
  55
  56 #endif