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Release 4.11 drivers/power/reset/rmobile-reset.c

/*
 * Renesas R-Mobile Reset Driver
 *
 * Copyright (C) 2014 Glider bvba
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */

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

/* SYSC Register Bank 2 */

#define RESCNT2		0x20		
/* Reset Control Register 2 */

/* Reset Control Register 2 */

#define RESCNT2_PRES	0x80000000	
/* Soft power-on reset */


static void __iomem *sysc_base2;


static int rmobile_reset_handler(struct notifier_block *this, unsigned long mode, void *cmd) { pr_debug("%s %lu\n", __func__, mode); /* Let's assume we have acquired the HPB semaphore */ writel(RESCNT2_PRES, sysc_base2 + RESCNT2); return NOTIFY_DONE; }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven41100.00%1100.00%
Total41100.00%1100.00%

static struct notifier_block rmobile_reset_nb = { .notifier_call = rmobile_reset_handler, .priority = 192, };
static int rmobile_reset_probe(struct platform_device *pdev) { int error; sysc_base2 = of_iomap(pdev->dev.of_node, 1); if (!sysc_base2) return -ENODEV; error = register_restart_handler(&rmobile_reset_nb); if (error) { dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n", error); goto fail_unmap; } return 0; fail_unmap: iounmap(sysc_base2); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven78100.00%1100.00%
Total78100.00%1100.00%


static int rmobile_reset_remove(struct platform_device *pdev) { unregister_restart_handler(&rmobile_reset_nb); iounmap(sysc_base2); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven25100.00%1100.00%
Total25100.00%1100.00%

static const struct of_device_id rmobile_reset_of_match[] = { { .compatible = "renesas,sysc-rmobile", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rmobile_reset_of_match); static struct platform_driver rmobile_reset_driver = { .probe = rmobile_reset_probe, .remove = rmobile_reset_remove, .driver = { .name = "rmobile_reset", .of_match_table = rmobile_reset_of_match, }, }; module_platform_driver(rmobile_reset_driver); MODULE_DESCRIPTION("Renesas R-Mobile Reset Driver"); MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>"); MODULE_LICENSE("GPL v2");

Overall Contributors

PersonTokensPropCommitsCommitProp
Geert Uytterhoeven280100.00%1100.00%
Total280100.00%1100.00%
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