mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 06:00:43 +00:00
87a5d1b5d0
Add a way to create and dispatch events without needing to allocate memory. Also add a way to 'spy' on events, thus allowing 'hooks' to be created. Use a linker list for static events, which we can use to replace functions like arch_cpu_init_f(). Allow an EVENT_DEBUG option which makes it easier to see what is going on at runtime, but uses more code space. Dynamic events allow the creation of a spy at runtime. This is not always necessary, but can be enabled with EVENT_DYNAMIC if needed. A 'test' event is the only option for now. Signed-off-by: Simon Glass <sjg@chromium.org>
35 lines
675 B
C
35 lines
675 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Internal definitions for events
|
|
*
|
|
* Copyright 2021 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#ifndef __event_internal_h
|
|
#define __event_internal_h
|
|
|
|
#include <event.h>
|
|
#include <linux/list.h>
|
|
|
|
/**
|
|
* struct event_spy - a spy that watches for an event of a particular type
|
|
*
|
|
* @id: Spy ID
|
|
* @type: Event type to subscribe to
|
|
* @func: Function to call when the event is sent
|
|
* @ctx: Context to pass to the function
|
|
*/
|
|
struct event_spy {
|
|
struct list_head sibling_node;
|
|
const char *id;
|
|
enum event_t type;
|
|
event_handler_t func;
|
|
void *ctx;
|
|
};
|
|
|
|
struct event_state {
|
|
struct list_head spy_head;
|
|
};
|
|
|
|
#endif
|