[people/ms/u-boot.git] / drivers / sysreset / sysreset_watchdog.c

/*
 * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <wdt.h>

struct wdt_reboot_priv {
	struct udevice *wdt;
};

static int wdt_reboot_request(struct udevice *dev, enum sysreset_t type)
{
	struct wdt_reboot_priv *priv = dev_get_priv(dev);
	int ret;

	ret = wdt_expire_now(priv->wdt, 0);
	if (ret)
		return ret;

	return -EINPROGRESS;
}

static struct sysreset_ops wdt_reboot_ops = {
	.request = wdt_reboot_request,
};

int wdt_reboot_probe(struct udevice *dev)
{
	struct wdt_reboot_priv *priv = dev_get_priv(dev);
	int err;

	err = uclass_get_device_by_phandle(UCLASS_WDT, dev,
					   "wdt", &priv->wdt);
	if (err) {
		pr_err("unable to find wdt device\n");
		return err;
	}

	return 0;
}

static const struct udevice_id wdt_reboot_ids[] = {
	{ .compatible = "wdt-reboot" },
	{ /* sentinel */ }
};

U_BOOT_DRIVER(wdt_reboot) = {
	.name = "wdt_reboot",
	.id = UCLASS_SYSRESET,
	.of_match = wdt_reboot_ids,
	.ops = &wdt_reboot_ops,
	.priv_auto_alloc_size = sizeof(struct wdt_reboot_priv),
	.probe = wdt_reboot_probe,
};
Commit	Line	Data
17a0c141 ÁFR	1	/*
	2	* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	#include <common.h>
	8	#include <dm.h>
	9	#include <errno.h>
	10	#include <sysreset.h>
	11	#include <wdt.h>
	12
	13	struct wdt_reboot_priv {
	14	struct udevice *wdt;
	15	};
	16
	17	static int wdt_reboot_request(struct udevice *dev, enum sysreset_t type)
	18	{
	19	struct wdt_reboot_priv *priv = dev_get_priv(dev);
	20	int ret;
	21
	22	ret = wdt_expire_now(priv->wdt, 0);
	23	if (ret)
	24	return ret;
	25
	26	return -EINPROGRESS;
	27	}
	28
	29	static struct sysreset_ops wdt_reboot_ops = {
	30	.request = wdt_reboot_request,
	31	};
	32
	33	int wdt_reboot_probe(struct udevice *dev)
	34	{
	35	struct wdt_reboot_priv *priv = dev_get_priv(dev);
	36	int err;
	37
	38	err = uclass_get_device_by_phandle(UCLASS_WDT, dev,
	39	"wdt", &priv->wdt);
	40	if (err) {
9b643e31	41	pr_err("unable to find wdt device\n");
17a0c141 ÁFR	42	return err;
	43	}
	44
	45	return 0;
	46	}
	47
	48	static const struct udevice_id wdt_reboot_ids[] = {
	49	{ .compatible = "wdt-reboot" },
	50	{ /* sentinel */ }
	51	};
	52
	53	U_BOOT_DRIVER(wdt_reboot) = {
	54	.name = "wdt_reboot",
	55	.id = UCLASS_SYSRESET,
	56	.of_match = wdt_reboot_ids,
	57	.ops = &wdt_reboot_ops,
	58	.priv_auto_alloc_size = sizeof(struct wdt_reboot_priv),
	59	.probe = wdt_reboot_probe,
	60	};