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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
165 lines
2.9 KiB
C
165 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY UCLASS_SYSRESET
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#include <common.h>
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#include <command.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <errno.h>
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#include <hang.h>
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#include <log.h>
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#include <regmap.h>
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#include <spl.h>
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#include <sysreset.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dm/root.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <asm/global_data.h>
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int sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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struct sysreset_ops *ops = sysreset_get_ops(dev);
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if (!ops->request)
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return -ENOSYS;
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return ops->request(dev, type);
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}
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int sysreset_get_status(struct udevice *dev, char *buf, int size)
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{
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struct sysreset_ops *ops = sysreset_get_ops(dev);
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if (!ops->get_status)
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return -ENOSYS;
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return ops->get_status(dev, buf, size);
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}
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int sysreset_get_last(struct udevice *dev)
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{
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struct sysreset_ops *ops = sysreset_get_ops(dev);
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if (!ops->get_last)
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return -ENOSYS;
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return ops->get_last(dev);
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}
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int sysreset_walk(enum sysreset_t type)
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{
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struct udevice *dev;
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int ret = -ENOSYS;
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while (ret != -EINPROGRESS && type < SYSRESET_COUNT) {
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for (uclass_first_device(UCLASS_SYSRESET, &dev);
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dev;
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uclass_next_device(&dev)) {
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ret = sysreset_request(dev, type);
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if (ret == -EINPROGRESS)
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break;
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}
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type++;
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}
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return ret;
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}
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int sysreset_get_last_walk(void)
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{
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struct udevice *dev;
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int value = -ENOENT;
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for (uclass_first_device(UCLASS_SYSRESET, &dev);
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dev;
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uclass_next_device(&dev)) {
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int ret;
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ret = sysreset_get_last(dev);
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if (ret >= 0) {
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value = ret;
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break;
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}
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}
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return value;
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}
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void sysreset_walk_halt(enum sysreset_t type)
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{
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int ret;
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ret = sysreset_walk(type);
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/* Wait for the reset to take effect */
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if (ret == -EINPROGRESS)
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mdelay(100);
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/* Still no reset? Give up */
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if (spl_phase() <= PHASE_SPL)
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log_err("no sysreset\n");
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else
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log_err("System reset not supported on this platform\n");
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hang();
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}
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/**
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* reset_cpu() - calls sysreset_walk(SYSRESET_WARM)
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*/
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void reset_cpu(void)
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{
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sysreset_walk_halt(SYSRESET_WARM);
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}
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#if IS_ENABLED(CONFIG_SYSRESET_CMD_RESET)
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int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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enum sysreset_t reset_type = SYSRESET_COLD;
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if (argc > 2)
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return CMD_RET_USAGE;
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if (argc == 2 && argv[1][0] == '-' && argv[1][1] == 'w') {
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reset_type = SYSRESET_WARM;
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}
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printf("resetting ...\n");
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mdelay(100);
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sysreset_walk_halt(reset_type);
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return 0;
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}
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#endif
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#if IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF)
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int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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int ret;
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puts("poweroff ...\n");
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mdelay(100);
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ret = sysreset_walk(SYSRESET_POWER_OFF);
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if (ret == -EINPROGRESS)
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mdelay(1000);
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/*NOTREACHED when power off*/
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return CMD_RET_FAILURE;
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}
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#endif
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UCLASS_DRIVER(sysreset) = {
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.id = UCLASS_SYSRESET,
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.name = "sysreset",
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};
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