linux-stable/include/linux/mfd/core.h
Andres Salomon f77289ac25 mfd: Rename mfd_shared_cell_{en,dis}able to drop the "shared" part
As requested by Samuel, there's not really any reason to have "shared"
in the name.

This also modifies the only user of the function, as well.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:42:03 +01:00

99 lines
2.8 KiB
C

/*
* 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.
*
*/
#ifndef MFD_CORE_H
#define MFD_CORE_H
#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 id;
/* refcounting for multiple drivers to use a single cell */
atomic_t *usage_count;
int (*enable)(struct platform_device *dev);
int (*disable)(struct platform_device *dev);
int (*suspend)(struct platform_device *dev);
int (*resume)(struct platform_device *dev);
/* mfd_data can be used to pass data to client drivers */
void *mfd_data;
/*
* These resources can be specified relative to the parent device.
* For accessing hardware you should use resources from the platform dev
*/
int num_resources;
const struct resource *resources;
/* don't check for resource conflicts */
bool ignore_resource_conflicts;
/*
* Disable runtime PM callbacks for this subdevice - see
* pm_runtime_no_callbacks().
*/
bool pm_runtime_no_callbacks;
};
/*
* Convenience functions for clients using shared cells. Refcounting
* happens automatically, with the cell's enable/disable callbacks
* being called only when a device is first being enabled or no other
* clients are making use of it.
*/
extern int mfd_cell_enable(struct platform_device *pdev);
extern int mfd_cell_disable(struct platform_device *pdev);
/*
* Given a platform device that's been created by mfd_add_devices(), fetch
* the mfd_cell that created it.
*/
static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev)
{
return pdev->dev.platform_data;
}
/*
* Given a platform device that's been created by mfd_add_devices(), fetch
* the .mfd_data entry from the mfd_cell that created it.
*/
static inline void *mfd_get_data(struct platform_device *pdev)
{
return mfd_get_cell(pdev)->mfd_data;
}
extern int mfd_add_devices(struct device *parent, int id,
struct mfd_cell *cells, int n_devs,
struct resource *mem_base,
int irq_base);
extern void mfd_remove_devices(struct device *parent);
/*
* For MFD drivers with clients sharing access to resources, these create
* multiple platform devices per cell. Contention handling must still be
* handled via drivers (ie, with enable/disable hooks).
*/
extern int mfd_shared_platform_driver_register(struct platform_driver *drv,
const char *cellname);
extern void mfd_shared_platform_driver_unregister(struct platform_driver *drv);
#endif