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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* CLPS711X CPU idle driver
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*
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* Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
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*/
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#include <linux/cpuidle.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#define CLPS711X_CPUIDLE_NAME "clps711x-cpuidle"
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static void __iomem *clps711x_halt;
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static int clps711x_cpuidle_halt(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index)
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{
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writel(0xaa, clps711x_halt);
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return index;
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}
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static struct cpuidle_driver clps711x_idle_driver = {
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.name = CLPS711X_CPUIDLE_NAME,
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.owner = THIS_MODULE,
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.states[0] = {
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.name = "HALT",
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.desc = "CLPS711X HALT",
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.enter = clps711x_cpuidle_halt,
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.exit_latency = 1,
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},
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.state_count = 1,
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};
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static int __init clps711x_cpuidle_probe(struct platform_device *pdev)
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{
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struct resource *res;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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clps711x_halt = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(clps711x_halt))
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return PTR_ERR(clps711x_halt);
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return cpuidle_register(&clps711x_idle_driver, NULL);
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}
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static struct platform_driver clps711x_cpuidle_driver = {
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.driver = {
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.name = CLPS711X_CPUIDLE_NAME,
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},
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};
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builtin_platform_driver_probe(clps711x_cpuidle_driver, clps711x_cpuidle_probe);
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