4c90aa94f6
Allow MFD cells to have pm_runtime_no_callbacks() called on them during registration. This causes the runtime PM framework to ignore them, allowing use of runtime PM to suspend the device as a whole even if not all drivers for the MFD can usefully implement runtime PM. For example, RTCs are likely to run continuously regardless of the power state of the system. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
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* drivers/mfd/mfd-core.h
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*
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* core MFD support
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* Copyright (c) 2006 Ian Molton
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* Copyright (c) 2007 Dmitry Baryshkov
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef MFD_CORE_H
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#define MFD_CORE_H
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#include <linux/platform_device.h>
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/*
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* This struct describes the MFD part ("cell").
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* After registration the copy of this structure will become the platform data
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* of the resulting platform_device
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*/
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struct mfd_cell {
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const char *name;
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int id;
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int (*enable)(struct platform_device *dev);
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int (*disable)(struct platform_device *dev);
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int (*suspend)(struct platform_device *dev);
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int (*resume)(struct platform_device *dev);
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/* driver-specific data for MFD-aware "cell" drivers */
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void *driver_data;
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/* platform_data can be used to either pass data to "generic"
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driver or as a hook to mfd_cell for the "cell" drivers */
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void *platform_data;
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size_t data_size;
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/*
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* This resources can be specified relatively to the parent device.
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* For accessing device you should use resources from device
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*/
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int num_resources;
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const struct resource *resources;
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/* don't check for resource conflicts */
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bool ignore_resource_conflicts;
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/*
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* Disable runtime PM callbacks for this subdevice - see
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* pm_runtime_no_callbacks().
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*/
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bool pm_runtime_no_callbacks;
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};
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extern int mfd_add_devices(struct device *parent, int id,
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const struct mfd_cell *cells, int n_devs,
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struct resource *mem_base,
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int irq_base);
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extern void mfd_remove_devices(struct device *parent);
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#endif
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