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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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dd68eb02e4
This adapts highbank to use psci for smp_ops and the cpu_suspend function for suspend/resume. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright 2011 Calxeda, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/cpu_pm.h>
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#include <linux/init.h>
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#include <linux/suspend.h>
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#include <asm/suspend.h>
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#include <asm/psci.h>
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static int highbank_suspend_finish(unsigned long val)
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{
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const struct psci_power_state ps = {
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.type = PSCI_POWER_STATE_TYPE_POWER_DOWN,
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.affinity_level = 1,
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};
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return psci_ops.cpu_suspend(ps, __pa(cpu_resume));
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}
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static int highbank_pm_enter(suspend_state_t state)
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{
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cpu_pm_enter();
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cpu_cluster_pm_enter();
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cpu_suspend(0, highbank_suspend_finish);
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cpu_cluster_pm_exit();
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cpu_pm_exit();
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return 0;
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}
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static const struct platform_suspend_ops highbank_pm_ops = {
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.enter = highbank_pm_enter,
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.valid = suspend_valid_only_mem,
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};
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void __init highbank_pm_init(void)
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{
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if (!psci_ops.cpu_suspend)
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return;
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suspend_set_ops(&highbank_pm_ops);
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}
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