[thirdparty/u-boot.git] / arch / x86 / cpu / tangier / sysreset.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
 *
 * Reset driver for tangier processor
 */

#include <common.h>
#include <dm.h>
#include <sysreset.h>
#include <asm/scu.h>

static int tangier_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
	int value;

	switch (type) {
	case SYSRESET_WARM:
		value = IPCMSG_WARM_RESET;
		break;
	case SYSRESET_COLD:
		value = IPCMSG_COLD_RESET;
		break;
	default:
		return -ENOSYS;
	}

	scu_ipc_simple_command(value, 0);

	return -EINPROGRESS;
}

static const struct udevice_id tangier_sysreset_ids[] = {
	{ .compatible = "intel,reset-tangier" },
	{ }
};

static struct sysreset_ops tangier_sysreset_ops = {
	.request = tangier_sysreset_request,
};

U_BOOT_DRIVER(tangier_sysreset) = {
	.name = "tangier-sysreset",
	.id = UCLASS_SYSRESET,
	.of_match = tangier_sysreset_ids,
	.ops = &tangier_sysreset_ops,
};
Commit	Line	Data
4c99ccfe BM	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
	4	*
	5	* Reset driver for tangier processor
	6	*/
	7
d678a59d	8	#include <common.h>
4c99ccfe BM	9	#include <dm.h>
	10	#include <sysreset.h>
	11	#include <asm/scu.h>
	12
	13	static int tangier_sysreset_request(struct udevice *dev, enum sysreset_t type)
	14	{
	15	int value;
	16
	17	switch (type) {
	18	case SYSRESET_WARM:
	19	value = IPCMSG_WARM_RESET;
	20	break;
	21	case SYSRESET_COLD:
	22	value = IPCMSG_COLD_RESET;
	23	break;
	24	default:
	25	return -ENOSYS;
	26	}
	27
	28	scu_ipc_simple_command(value, 0);
	29
	30	return -EINPROGRESS;
	31	}
	32
	33	static const struct udevice_id tangier_sysreset_ids[] = {
	34	{ .compatible = "intel,reset-tangier" },
	35	{ }
	36	};
	37
	38	static struct sysreset_ops tangier_sysreset_ops = {
	39	.request = tangier_sysreset_request,
	40	};
	41
	42	U_BOOT_DRIVER(tangier_sysreset) = {
	43	.name = "tangier-sysreset",
	44	.id = UCLASS_SYSRESET,
	45	.of_match = tangier_sysreset_ids,
	46	.ops = &tangier_sysreset_ops,
4c99ccfe	47	};