dany/u-boot-megous
1
0
Fork 0
mirror of https://xff.cz/git/u-boot/ synced 2025-08-31 16:22:36 +02:00
Code Issues Packages Projects Releases Wiki Activity

Rename reset to sysreset

Browse Source 
The current reset API implements a method to reset the entire system.
In the near future, I'd like to introduce code that implements the device
tree reset bindings; i.e. the equivalent of the Linux kernel's reset API.
This controls resets to individual HW blocks or external chips with reset
signals. It doesn't make sense to merge the two APIs into one since they
have different semantic purposes. Resolve the naming conflict by renaming
the existing reset API to sysreset instead, so the new reset API can be
called just reset.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Stephen Warren
2016-05-12 12:03:35 -06:00
committed by Simon Glass
parent 6f82fac2f2
commit 1163625898
27 changed files with 316 additions and 315 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
include/reset.h
View File

@@ -1,71 +0,0 @@
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __RESET_H
#define __RESET_H
enum reset_t {
RESET_WARM, /* Reset CPU, keep GPIOs active */
RESET_COLD, /* Reset CPU and GPIOs */
RESET_POWER, /* Reset PMIC (remove and restore power) */
RESET_COUNT,
};
struct reset_ops {
/**
* request() - request a reset of the given type
*
* Note that this function may return before the reset takes effect.
*
* @type: Reset type to request
* @return -EINPROGRESS if the reset has been started and
* will complete soon, -EPROTONOSUPPORT if not supported
* by this device, 0 if the reset has already happened
* (in which case this method will not actually return)
*/
int (*request)(struct udevice *dev, enum reset_t type);
};
#define reset_get_ops(dev) ((struct reset_ops *)(dev)->driver->ops)
/**
* reset_request() - request a reset
*
* @type: Reset type to request
* @return 0 if OK, -EPROTONOSUPPORT if not supported by this device
*/
int reset_request(struct udevice *dev, enum reset_t type);
/**
* reset_walk() - cause a reset
*
* This works through the available reset devices until it finds one that can
* perform a reset. If the provided reset type is not available, the next one
* will be tried.
*
* If this function fails to reset, it will display a message and halt
*
* @type: Reset type to request
* @return -EINPROGRESS if a reset is in progress, -ENOSYS if not available
*/
int reset_walk(enum reset_t type);
/**
* reset_walk_halt() - try to reset, otherwise halt
*
* This calls reset_walk(). If it returns, indicating that reset is not
* supported, it prints a message and halts.
*/
void reset_walk_halt(enum reset_t type);
/**
* reset_cpu() - calls reset_walk(RESET_WARM)
*/
void reset_cpu(ulong addr);
#endif