cregit-Linux how code gets into the kernel

Release 4.11 drivers/power/reset/hisi-reboot.c

/*
 * Hisilicon SoC reset code
 *
 * Copyright (c) 2014 Hisilicon Ltd.
 * Copyright (c) 2014 Linaro Ltd.
 *
 * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/delay.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>

#include <asm/proc-fns.h>


static void __iomem *base;

static u32 reboot_offset;


static int hisi_restart_handler(struct notifier_block *this, unsigned long mode, void *cmd) { writel_relaxed(0xdeadbeef, base + reboot_offset); while (1) cpu_do_idle(); return NOTIFY_DONE; }

Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang2565.79%150.00%
Guenter Roeck1334.21%150.00%
Total38100.00%2100.00%

static struct notifier_block hisi_restart_nb = { .notifier_call = hisi_restart_handler, .priority = 128, };
static int hisi_reboot_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; int err; base = of_iomap(np, 0); if (!base) { WARN(1, "failed to map base address"); return -ENODEV; } if (of_property_read_u32(np, "reboot-offset", &reboot_offset) < 0) { pr_err("failed to find reboot-offset property\n"); iounmap(base); return -EINVAL; } err = register_restart_handler(&hisi_restart_nb); if (err) { dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n", err); iounmap(base); } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang7867.24%133.33%
Guenter Roeck2622.41%133.33%
Arvind Yadav1210.34%133.33%
Total116100.00%3100.00%

static const struct of_device_id hisi_reboot_of_match[] = { { .compatible = "hisilicon,sysctrl" }, {} }; static struct platform_driver hisi_reboot_driver = { .probe = hisi_reboot_probe, .driver = { .name = "hisi-reboot", .of_match_table = hisi_reboot_of_match, }, }; module_platform_driver(hisi_reboot_driver);

Overall Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang18271.09%125.00%
Guenter Roeck6123.83%125.00%
Arvind Yadav124.69%125.00%
Fabian Frederick10.39%125.00%
Total256100.00%4100.00%
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