37 lines
753 B
C
37 lines
753 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2024, ArtInChip Co., Ltd
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* Author: dwj <weijie.ding@artinchip.com>
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*/
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#include <linux/init.h>
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#include <linux/suspend.h>
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#include <asm/sbi.h>
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#define SBI_HSM_SUSPEND_RET_PLATFORM 0x10000000
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static int aic_pm_state_enter(suspend_state_t state)
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{
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struct sbiret ret;
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ret = sbi_ecall(SBI_EXT_HSM, SBI_EXT_HSM_HART_SUSPEND,
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SBI_HSM_SUSPEND_RET_PLATFORM, 0, 0, 0, 0, 0);
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return (ret.error) ? sbi_err_map_linux_errno(ret.error) : 0;
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}
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static const struct platform_suspend_ops aic_pm_ops = {
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.valid = suspend_valid_only_mem,
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.enter = aic_pm_state_enter,
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};
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static int __init aic_suspend_init(void)
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{
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suspend_set_ops(&aic_pm_ops);
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return 0;
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}
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subsys_initcall(aic_suspend_init);
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