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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* Copyright 2017-2018 NXP
* Anson Huang <Anson.Huang@nxp.com>
*/
#include <linux/cpuidle.h>
#include <linux/module.h>
#include <asm/cpuidle.h>
#include "common.h"
#include "cpuidle.h"
static int imx7ulp_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
if (index == 1)
imx7ulp_set_lpm(ULP_PM_WAIT);
else
imx7ulp_set_lpm(ULP_PM_STOP);
cpu_do_idle();
imx7ulp_set_lpm(ULP_PM_RUN);
return index;
}
static struct cpuidle_driver imx7ulp_cpuidle_driver = {
.name = "imx7ulp_cpuidle",
.owner = THIS_MODULE,
.states = {
/* WFI */
ARM_CPUIDLE_WFI_STATE,
/* WAIT */
{
.exit_latency = 50,
.target_residency = 75,
.enter = imx7ulp_enter_wait,
.name = "WAIT",
.desc = "PSTOP2",
},
/* STOP */
{
.exit_latency = 100,
.target_residency = 150,
.enter = imx7ulp_enter_wait,
.name = "STOP",
.desc = "PSTOP1",
},
},
.state_count = 3,
.safe_state_index = 0,
};
int __init imx7ulp_cpuidle_init(void)
{
return cpuidle_register(&imx7ulp_cpuidle_driver, NULL);
}
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