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9c92ab6191
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2011 Google, Inc.
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*
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* Author:
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* Colin Cross <ccross@android.com>
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*
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* Copyright (C) 2010,2013, NVIDIA Corporation
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*/
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#include <linux/cpu_pm.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/irqchip/arm-gic.h>
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <linux/of_address.h>
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#include <linux/of.h>
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#include <linux/syscore_ops.h>
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#include "board.h"
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#include "iomap.h"
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#include "irq.h"
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#define SGI_MASK 0xFFFF
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#ifdef CONFIG_PM_SLEEP
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static void __iomem *tegra_gic_cpu_base;
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#endif
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bool tegra_pending_sgi(void)
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{
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u32 pending_set;
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void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
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pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET);
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if (pending_set & SGI_MASK)
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return true;
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return false;
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}
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#ifdef CONFIG_PM_SLEEP
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static int tegra_gic_notifier(struct notifier_block *self,
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unsigned long cmd, void *v)
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{
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switch (cmd) {
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case CPU_PM_ENTER:
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writel_relaxed(0x1E0, tegra_gic_cpu_base + GIC_CPU_CTRL);
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break;
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}
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return NOTIFY_OK;
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}
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static struct notifier_block tegra_gic_notifier_block = {
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.notifier_call = tegra_gic_notifier,
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};
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static const struct of_device_id tegra114_dt_gic_match[] __initconst = {
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{ .compatible = "arm,cortex-a15-gic" },
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{ }
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};
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static void __init tegra114_gic_cpu_pm_registration(void)
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{
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struct device_node *dn;
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dn = of_find_matching_node(NULL, tegra114_dt_gic_match);
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if (!dn)
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return;
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tegra_gic_cpu_base = of_iomap(dn, 1);
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cpu_pm_register_notifier(&tegra_gic_notifier_block);
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}
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#else
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static void __init tegra114_gic_cpu_pm_registration(void) { }
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#endif
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static const struct of_device_id tegra_ictlr_match[] __initconst = {
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{ .compatible = "nvidia,tegra20-ictlr" },
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{ .compatible = "nvidia,tegra30-ictlr" },
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{ }
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};
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void __init tegra_init_irq(void)
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{
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if (WARN_ON(!of_find_matching_node(NULL, tegra_ictlr_match)))
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pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
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tegra114_gic_cpu_pm_registration();
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}
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