cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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omap_device.h (2792B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * omap_device headers
      4 *
      5 * Copyright (C) 2009 Nokia Corporation
      6 * Paul Walmsley
      7 *
      8 * Developed in collaboration with (alphabetical order): Benoit
      9 * Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram
     10 * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
     11 * Woodruff
     12 *
     13 * This type of functionality should be implemented as a proper
     14 * omap_bus/omap_device in Linux.
     15 *
     16 * omap_device differs from omap_hwmod in that it includes external
     17 * (e.g., board- and system-level) integration details.  omap_hwmod
     18 * stores hardware data that is invariant for a given OMAP chip.
     19 */
     20#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
     21#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
     22
     23#include <linux/kernel.h>
     24#include <linux/platform_device.h>
     25
     26#include "omap_hwmod.h"
     27
     28extern struct dev_pm_domain omap_device_pm_domain;
     29extern struct dev_pm_domain omap_device_fail_pm_domain;
     30
     31/* omap_device._state values */
     32#define OMAP_DEVICE_STATE_UNKNOWN	0
     33#define OMAP_DEVICE_STATE_ENABLED	1
     34#define OMAP_DEVICE_STATE_IDLE		2
     35#define OMAP_DEVICE_STATE_SHUTDOWN	3
     36
     37/* omap_device.flags values */
     38#define OMAP_DEVICE_SUSPENDED		BIT(0)
     39
     40/**
     41 * struct omap_device - omap_device wrapper for platform_devices
     42 * @pdev: platform_device
     43 * @hwmods: (one .. many per omap_device)
     44 * @hwmods_cnt: ARRAY_SIZE() of @hwmods
     45 * @_state: one of OMAP_DEVICE_STATE_* (see above)
     46 * @flags: device flags
     47 * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h>
     48 *
     49 * Integrates omap_hwmod data into Linux platform_device.
     50 *
     51 * Field names beginning with underscores are for the internal use of
     52 * the omap_device code.
     53 *
     54 */
     55struct omap_device {
     56	struct platform_device		*pdev;
     57	struct omap_hwmod		**hwmods;
     58	unsigned long			_driver_status;
     59	u8				hwmods_cnt;
     60	u8				_state;
     61	u8                              flags;
     62};
     63
     64/* Device driver interface (call via platform_data fn ptrs) */
     65
     66int omap_device_enable(struct platform_device *pdev);
     67int omap_device_idle(struct platform_device *pdev);
     68
     69/* Core code interface */
     70
     71struct omap_device *omap_device_alloc(struct platform_device *pdev,
     72				      struct omap_hwmod **ohs, int oh_cnt);
     73void omap_device_delete(struct omap_device *od);
     74
     75struct device *omap_device_get_by_hwmod_name(const char *oh_name);
     76
     77/* OMAP PM interface */
     78int omap_device_get_context_loss_count(struct platform_device *pdev);
     79
     80/* Other */
     81
     82int omap_device_assert_hardreset(struct platform_device *pdev,
     83				 const char *name);
     84int omap_device_deassert_hardreset(struct platform_device *pdev,
     85				 const char *name);
     86
     87/* Get omap_device pointer from platform_device pointer */
     88static inline struct omap_device *to_omap_device(struct platform_device *pdev)
     89{
     90	return pdev ? pdev->archdata.od : NULL;
     91}
     92#endif