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