mirror of https://gitee.com/openkylin/linux.git
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* omap_device headers
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*
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* Copyright (C) 2009 Nokia Corporation
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* Paul Walmsley
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*
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* Developed in collaboration with (alphabetical order): Benoit
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* Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram
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* Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
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* Woodruff
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*
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* This type of functionality should be implemented as a proper
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* omap_bus/omap_device in Linux.
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*
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* omap_device differs from omap_hwmod in that it includes external
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* (e.g., board- and system-level) integration details. omap_hwmod
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* stores hardware data that is invariant for a given OMAP chip.
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*/
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#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
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#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include "omap_hwmod.h"
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extern struct dev_pm_domain omap_device_pm_domain;
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extern struct dev_pm_domain omap_device_fail_pm_domain;
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/* omap_device._state values */
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#define OMAP_DEVICE_STATE_UNKNOWN 0
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#define OMAP_DEVICE_STATE_ENABLED 1
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#define OMAP_DEVICE_STATE_IDLE 2
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#define OMAP_DEVICE_STATE_SHUTDOWN 3
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/* omap_device.flags values */
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#define OMAP_DEVICE_SUSPENDED BIT(0)
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/**
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* struct omap_device - omap_device wrapper for platform_devices
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* @pdev: platform_device
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* @hwmods: (one .. many per omap_device)
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* @hwmods_cnt: ARRAY_SIZE() of @hwmods
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* @_state: one of OMAP_DEVICE_STATE_* (see above)
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* @flags: device flags
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* @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h>
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*
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* Integrates omap_hwmod data into Linux platform_device.
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*
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* Field names beginning with underscores are for the internal use of
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* the omap_device code.
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*
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*/
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struct omap_device {
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struct platform_device *pdev;
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struct omap_hwmod **hwmods;
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unsigned long _driver_status;
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u8 hwmods_cnt;
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u8 _state;
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u8 flags;
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};
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/* Device driver interface (call via platform_data fn ptrs) */
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int omap_device_enable(struct platform_device *pdev);
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int omap_device_idle(struct platform_device *pdev);
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/* Core code interface */
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struct omap_device *omap_device_alloc(struct platform_device *pdev,
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struct omap_hwmod **ohs, int oh_cnt);
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void omap_device_delete(struct omap_device *od);
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int omap_device_register(struct platform_device *pdev);
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struct device *omap_device_get_by_hwmod_name(const char *oh_name);
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/* OMAP PM interface */
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int omap_device_get_context_loss_count(struct platform_device *pdev);
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/* Other */
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int omap_device_assert_hardreset(struct platform_device *pdev,
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const char *name);
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int omap_device_deassert_hardreset(struct platform_device *pdev,
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const char *name);
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/* Get omap_device pointer from platform_device pointer */
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static inline struct omap_device *to_omap_device(struct platform_device *pdev)
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{
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return pdev ? pdev->archdata.od : NULL;
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}
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#endif
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