129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
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/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __SUBSYS_RESTART_H
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#define __SUBSYS_RESTART_H
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#include <linux/spinlock.h>
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#define SUBSYS_NAME_MAX_LENGTH 40
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struct subsys_device;
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enum {
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RESET_SOC = 0,
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RESET_SUBSYS_COUPLED,
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RESET_LEVEL_MAX
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};
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struct device;
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struct module;
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/**
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* struct subsys_desc - subsystem descriptor
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* @name: name of subsystem
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* @depends_on: subsystem this subsystem depends on to operate
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* @dev: parent device
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* @owner: module the descriptor belongs to
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* @start: Start a subsystem
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* @stop: Stop a subsystem
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* @shutdown: Stop a subsystem
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* @powerup: Start a subsystem
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* @crash_shutdown: Shutdown a subsystem when the system crashes (can't sleep)
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* @ramdump: Collect a ramdump of the subsystem
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* @is_not_loadable: Indicate if subsystem firmware is not loadable via pil
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* framework
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*/
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struct subsys_desc {
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const char *name;
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const char *depends_on;
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struct device *dev;
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struct module *owner;
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int (*start)(const struct subsys_desc *desc);
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void (*stop)(const struct subsys_desc *desc);
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int (*shutdown)(const struct subsys_desc *desc);
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int (*powerup)(const struct subsys_desc *desc);
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void (*crash_shutdown)(const struct subsys_desc *desc);
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int (*ramdump)(int, const struct subsys_desc *desc);
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unsigned int err_ready_irq;
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int is_not_loadable;
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};
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#if defined(CONFIG_MSM_SUBSYSTEM_RESTART)
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extern int subsys_get_restart_level(struct subsys_device *dev);
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extern int subsystem_restart_dev(struct subsys_device *dev);
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extern int subsystem_restart(const char *name);
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extern int subsystem_crashed(const char *name);
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extern void *subsystem_get(const char *name);
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extern void subsystem_put(void *subsystem);
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extern struct subsys_device *subsys_register(struct subsys_desc *desc);
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extern void subsys_unregister(struct subsys_device *dev);
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extern void subsys_default_online(struct subsys_device *dev);
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extern void subsys_set_crash_status(struct subsys_device *dev, bool crashed);
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extern bool subsys_get_crash_status(struct subsys_device *dev);
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#else
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static inline int subsys_get_restart_level(struct subsys_device *dev)
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{
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return 0;
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}
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static inline int subsystem_restart_dev(struct subsys_device *dev)
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{
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return 0;
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}
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static inline int subsystem_restart(const char *name)
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{
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return 0;
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}
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static inline int subsystem_crashed(const char *name)
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{
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return 0;
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}
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static inline void *subsystem_get(const char *name)
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{
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return NULL;
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}
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static inline void subsystem_put(void *subsystem) { }
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static inline
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struct subsys_device *subsys_register(struct subsys_desc *desc)
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{
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return NULL;
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}
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static inline void subsys_unregister(struct subsys_device *dev) { }
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static inline void subsys_default_online(struct subsys_device *dev) { }
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static inline
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void subsys_set_crash_status(struct subsys_device *dev, bool crashed) { }
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static inline bool subsys_get_crash_status(struct subsys_device *dev)
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{
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return false;
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}
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#endif /* CONFIG_MSM_SUBSYSTEM_RESTART */
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#endif
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