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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);
| }
|
|
