144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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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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#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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#define MFD_RES_SIZE(arr) (sizeof(arr) / sizeof(struct resource))
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#define MFD_CELL_ALL(_name, _res, _pdata, _pdsize, _id, _compat, _match)\
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{ \
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.name = (_name), \
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.resources = (_res), \
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.num_resources = MFD_RES_SIZE((_res)), \
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.platform_data = (_pdata), \
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.pdata_size = (_pdsize), \
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.of_compatible = (_compat), \
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.acpi_match = (_match), \
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.id = (_id), \
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}
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#define OF_MFD_CELL(_name, _res, _pdata, _pdsize,_id, _compat) \
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MFD_CELL_ALL(_name, _res, _pdata, _pdsize, _id, _compat, NULL) \
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#define ACPI_MFD_CELL(_name, _res, _pdata, _pdsize, _id, _match) \
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MFD_CELL_ALL(_name, _res, _pdata, _pdsize, _id, NULL, _match) \
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#define MFD_CELL_BASIC(_name, _res, _pdata, _pdsize, _id) \
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MFD_CELL_ALL(_name, _res, _pdata, _pdsize, _id, NULL, NULL) \
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#define MFD_CELL_RES(_name, _res) \
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MFD_CELL_ALL(_name, _res, NULL, 0, 0, NULL, NULL) \
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#define MFD_CELL_NAME(_name) \
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MFD_CELL_ALL(_name, NULL, NULL, 0, 0, NULL, NULL) \
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struct irq_domain;
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struct property_entry;
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/* Matches ACPI PNP id, either _HID or _CID, or ACPI _ADR */
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struct mfd_cell_acpi_match {
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const char *pnpid;
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const unsigned long long adr;
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};
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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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/* platform data passed to the sub devices drivers */
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void *platform_data;
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size_t pdata_size;
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/* device properties passed to the sub devices drivers */
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struct property_entry *properties;
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/*
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* Device Tree compatible string
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* See: Documentation/devicetree/usage-model.txt Chapter 2.2 for details
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*/
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const char *of_compatible;
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/* Matches ACPI */
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const struct mfd_cell_acpi_match *acpi_match;
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/*
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* These resources can be specified relative to the parent device.
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* For accessing hardware you should use resources from the platform dev
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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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/* A list of regulator supplies that should be mapped to the MFD
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* device rather than the child device when requested
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*/
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const char * const *parent_supplies;
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int num_parent_supplies;
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};
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/*
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* Convenience functions for clients using shared cells. Refcounting
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* happens automatically, with the cell's enable/disable callbacks
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* being called only when a device is first being enabled or no other
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* clients are making use of it.
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*/
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extern int mfd_cell_enable(struct platform_device *pdev);
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extern int mfd_cell_disable(struct platform_device *pdev);
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/*
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* Given a platform device that's been created by mfd_add_devices(), fetch
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* the mfd_cell that created it.
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*/
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static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev)
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{
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return pdev->mfd_cell;
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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, struct irq_domain *irq_domain);
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static inline int mfd_add_hotplug_devices(struct device *parent,
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const struct mfd_cell *cells, int n_devs)
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{
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return mfd_add_devices(parent, PLATFORM_DEVID_AUTO, cells, n_devs,
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NULL, 0, NULL);
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}
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extern void mfd_remove_devices(struct device *parent);
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extern int devm_mfd_add_devices(struct device *dev, 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, struct irq_domain *irq_domain);
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#endif
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