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

/*
 * (C) Copyright 2016 Google, Inc
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <wdt.h>
#include <asm/io.h>
#include <asm/arch/wdt.h>
#include <linux/err.h>

static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
	struct udevice *wdt;
	u32 reset_mode;
	int ret = uclass_first_device(UCLASS_WDT, &wdt);

	if (ret)
		return ret;

	switch (type) {
	case SYSRESET_WARM:
		reset_mode = WDT_CTRL_RESET_CPU;
		break;
	case SYSRESET_COLD:
		reset_mode = WDT_CTRL_RESET_CHIP;
		break;
	default:
		return -EPROTONOSUPPORT;
	}

	ret = wdt_expire_now(wdt, reset_mode);
	if (ret) {
		debug("Sysreset failed: %d", ret);
		return ret;
	}

	return -EINPROGRESS;
}

static struct sysreset_ops ast_sysreset = {
	.request	= ast_sysreset_request,
};

U_BOOT_DRIVER(sysreset_ast) = {
	.name	= "ast_sysreset",
	.id	= UCLASS_SYSRESET,
	.ops	= &ast_sysreset,
};
Commit	Line	Data
4697abea	1	/*
	2	* (C) Copyright 2016 Google, Inc
	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>
99f8ad73	11	#include <wdt.h>
4697abea	12	#include <asm/io.h>
	13	#include <asm/arch/wdt.h>
	14	#include <linux/err.h>
	15
4697abea	16	static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type)
4697abea	17	{
99f8ad73	18	struct udevice *wdt;
	19	u32 reset_mode;
	20	int ret = uclass_first_device(UCLASS_WDT, &wdt);
4697abea	21
99f8ad73	22	if (ret)
99f8ad73	23	return ret;
4697abea	24
	25	switch (type) {
	26	case SYSRESET_WARM:
	27	reset_mode = WDT_CTRL_RESET_CPU;
	28	break;
	29	case SYSRESET_COLD:
	30	reset_mode = WDT_CTRL_RESET_CHIP;
	31	break;
	32	default:
	33	return -EPROTONOSUPPORT;
	34	}
	35
99f8ad73	36	ret = wdt_expire_now(wdt, reset_mode);
	37	if (ret) {
	38	debug("Sysreset failed: %d", ret);
	39	return ret;
	40	}
4697abea	41
	42	return -EINPROGRESS;
	43	}
	44
	45	static struct sysreset_ops ast_sysreset = {
	46	.request = ast_sysreset_request,
	47	};
	48
	49	U_BOOT_DRIVER(sysreset_ast) = {
	50	.name = "ast_sysreset",
	51	.id = UCLASS_SYSRESET,
	52	.ops = &ast_sysreset,
	53	};