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51dc5259e8
Adding the generic ARM_CPUIDLE_WFI_STATE support for Tegra114. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
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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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/cpuidle.h>
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#include <asm/cpuidle.h>
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static struct cpuidle_driver tegra_idle_driver = {
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.name = "tegra_idle",
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.owner = THIS_MODULE,
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.en_core_tk_irqen = 1,
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.state_count = 1,
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.states = {
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[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
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},
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};
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static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
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int __init tegra114_cpuidle_init(void)
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{
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int ret;
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unsigned int cpu;
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struct cpuidle_device *dev;
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struct cpuidle_driver *drv = &tegra_idle_driver;
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ret = cpuidle_register_driver(&tegra_idle_driver);
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if (ret) {
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pr_err("CPUidle driver registration failed\n");
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return ret;
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}
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for_each_possible_cpu(cpu) {
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dev = &per_cpu(tegra_idle_device, cpu);
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dev->cpu = cpu;
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dev->state_count = drv->state_count;
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ret = cpuidle_register_device(dev);
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if (ret) {
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pr_err("CPU%u: CPUidle device registration failed\n",
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cpu);
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return ret;
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}
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}
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return 0;
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}
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