plat/mediatek/drivers/spm/version/notifier/v1/mt_spm_sspm_notifier.c

/*
 * Copyright (c) 2023, MediaTek Inc. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <common/debug.h>
#include <lib/mmio.h>
#include "mt_spm_notifier.h"
#include "mt_spm_sspm_intc.h"
#include <platform_def.h>

#define MT_SPM_SSPM_MBOX_OFF(x)	(SSPM_MBOX_3_BASE + x)
#define MT_SPM_MBOX(slot)	MT_SPM_SSPM_MBOX_OFF((slot << 2UL))

/* LOOKUP SSPM_MBOX_SPM_LP1 */
#define SSPM_MBOX_SPM_LP_LOOKUP1	MT_SPM_MBOX(0)
/* LOOKUP SSPM_MBOX_SPM_LP2 */
#define SSPM_MBOX_SPM_LP_LOOKUP2	MT_SPM_MBOX(1)

#define SSPM_MBOX_SPM_LP1		MT_SPM_MBOX(2)
#define SSPM_MBOX_SPM_LP2		MT_SPM_MBOX(3)

int mt_spm_sspm_notify_u32(int type, unsigned int val)
{
	switch (type) {
	case MT_SPM_NOTIFY_LP_ENTER:
		mmio_write_32(SSPM_MBOX_SPM_LP1, val);
		DO_SPM_SSPM_LP_SUSPEND();
		break;
	case MT_SPM_NOTIFY_LP_LEAVE:
		mmio_write_32(SSPM_MBOX_SPM_LP1, val);
		DO_SPM_SSPM_LP_RESUME();
		break;
	default:
		panic();
		break;
	}
	return 0;
}