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AS3722 PMIC and for STMicroelectronics STw481x PMIC. Although this is a smaller update than usual, we also have: - Device tree support for the max77693 driver. - linux/of.h inclusion for all DT compatible MFD drivers, to avoid build breakage in the future. - Support for Intel Wildcat Point-LP PCH through the lpc_ich driver. - A small arizona update for new wm5110 DSP registers and a few fixes. - A small palmas update as well, including an of_device table addition and a few minor fixes. - Two small mfd-core changes, one including a memory leak fix for when mfd_add_device() fails. - Our usual round of minor cleanups and janitorial fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQIcBAABAgAGBQJShjufAAoJEIqAPN1PVmxKRoEP/jKe0UgrNA6G4xHSPX1Xcktc /kaQdcwJcTTHMpkIyQPFayItCcBPyb8bN1SdrQs4sds4ut7xyjve2uHz0KpZI6JO F+Rh6UVNkUIbcEx3jfh0DDv3pHv0vryFPnerkOIr0TFmSF1Tj29dRORQzpEqZ2fZ rstxmxNTG0ggP0Ug4ivv/YWjhGmO9CvKePJzQyImrC8QWCRDiARu072bG8xhVyHZ PkJTzJr2kjkI3whIY7Z04Nx90AtpikM4G27JiCwsHyv4vCCOtTtC9lRYb/IBUHWJ UhJiPvTygsU63opGOyAodR9LJxta0UCWm2Qn71ZuBAJmQ4oFxdZ7iVkWePjeSF5U 2Jx9dUi1UWJQNCSB8HEpaUExybXdsNTwnSw8NIb6Gg2kygClj5KvzPMwz3ZHRKU/ Ef1TGpWTeuok0zOijhBDUqAhq4KQv/H9Xjbm8FIMSBVGQgRBT3dkYTRZv30deeg/ SIzoJGg7QiMDwlu/33k7aX7aIwJA2r6st/Q3OUKp/aBVqd6i24rL5+ZMykqcx5HJ x9GnvjrHgz+nAgF2yU6KQT1FrX1IQEM4F1tgMtroXQcCAGgoWoJRjW82gQqp6NE+ eVbvsE56z2MiSNbiYUL4hdC03b/z8LbzP1zEt95Xc+sOf7NewMHYln7XkByBxrPH tlR20ZV44W25s7DYg7xh =nQ/p -----END PGP SIGNATURE----- Merge tag 'mfd-3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next Pull MFD updates from Samuel Ortiz: "For the 3.13 merge window we have a couple of new drivers for the AMS AS3722 PMIC and for STMicroelectronics STw481x PMIC. Although this is a smaller update than usual, we also have: - Device tree support for the max77693 driver - linux/of.h inclusion for all DT compatible MFD drivers, to avoid build breakage in the future - Support for Intel Wildcat Point-LP PCH through the lpc_ich driver - A small arizona update for new wm5110 DSP registers and a few fixes - A small palmas update as well, including an of_device table addition and a few minor fixes - Two small mfd-core changes, one including a memory leak fix for when mfd_add_device() fails - Our usual round of minor cleanups and janitorial fixes" * tag 'mfd-3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (63 commits) Documentation: mfd: Update s2mps11.txt mfd: pm8921: Potential NULL dereference in pm8921_remove() mfd: Fix memory leak in mfd_add_devices() mfd: Stop setting refcounting pointers in original mfd_cell arrays mfd: wm5110: Enable micd clamp functionality mfd: lpc_ich: Add Device IDs for Intel Wildcat Point-LP PCH mfd: max77693: Fix up bug of wrong interrupt number mfd: as3722: Don't export the regmap config mfd: twl6040: Remove obsolete cleanup for i2c clientdata mfd: tps65910: Remove warning during dt node parsing mfd: lpc_sch: Ignore resource conflicts when adding mfd cells mfd: ti_am335x_tscadc: Avoid possible deadlock of reg_lock mfd: syscon: Return -ENOSYS if CONFIG_MFD_SYSCON is not enabled mfd: Add support for ams AS3722 PMIC mfd: max77693: Include linux/of.h header mfd: tc3589x: Detect the precise version mfd: omap-usb: prepare/unprepare clock while enable/disable mfd: max77686: Include linux/of.h header mfd: max8907: Include linux/of.h header mfd: max8997: Include linux/of.h header ...
114 lines
3.3 KiB
C
114 lines
3.3 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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struct irq_domain;
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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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/* refcounting for multiple drivers to use a single cell */
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atomic_t *usage_count;
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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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/*
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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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/*
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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 **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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* "Clone" multiple platform devices for a single cell. This is to be used
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* for devices that have multiple users of a cell. For example, if an mfd
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* driver wants the cell "foo" to be used by a GPIO driver, an MTD driver,
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* and a platform driver, the following bit of code would be use after first
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* calling mfd_add_devices():
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*
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* const char *fclones[] = { "foo-gpio", "foo-mtd" };
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* err = mfd_clone_cells("foo", fclones, ARRAY_SIZE(fclones));
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*
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* Each driver (MTD, GPIO, and platform driver) would then register
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* platform_drivers for "foo-mtd", "foo-gpio", and "foo", respectively.
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* The cell's .enable/.disable hooks should be used to deal with hardware
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* resource contention.
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*/
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extern int mfd_clone_cell(const char *cell, const char **clones,
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size_t n_clones);
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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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extern void mfd_remove_devices(struct device *parent);
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#endif
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