https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: fc74e0a40e4f9fd0468e34045b0c45bba11dcbb2 authored by Linus Torvalds on 26 December 2021, 21:17:17 UTC
Linux 5.16-rc7
Linux 5.16-rc7
Tip revision: fc74e0a
irq.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2011 Google, Inc.
*
* Author:
* Colin Cross <ccross@android.com>
*
* Copyright (C) 2010,2013, NVIDIA Corporation
*/
#include <linux/cpu_pm.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/of_address.h>
#include <linux/of.h>
#include <linux/syscore_ops.h>
#include <soc/tegra/irq.h>
#include "board.h"
#include "iomap.h"
#define SGI_MASK 0xFFFF
#ifdef CONFIG_PM_SLEEP
static void __iomem *tegra_gic_cpu_base;
#endif
bool tegra_pending_sgi(void)
{
u32 pending_set;
void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET);
if (pending_set & SGI_MASK)
return true;
return false;
}
#ifdef CONFIG_PM_SLEEP
static int tegra_gic_notifier(struct notifier_block *self,
unsigned long cmd, void *v)
{
switch (cmd) {
case CPU_PM_ENTER:
writel_relaxed(0x1E0, tegra_gic_cpu_base + GIC_CPU_CTRL);
break;
}
return NOTIFY_OK;
}
static struct notifier_block tegra_gic_notifier_block = {
.notifier_call = tegra_gic_notifier,
};
static const struct of_device_id tegra114_dt_gic_match[] __initconst = {
{ .compatible = "arm,cortex-a15-gic" },
{ }
};
static void __init tegra114_gic_cpu_pm_registration(void)
{
struct device_node *dn;
dn = of_find_matching_node(NULL, tegra114_dt_gic_match);
if (!dn)
return;
tegra_gic_cpu_base = of_iomap(dn, 1);
cpu_pm_register_notifier(&tegra_gic_notifier_block);
}
#else
static void __init tegra114_gic_cpu_pm_registration(void) { }
#endif
static const struct of_device_id tegra_ictlr_match[] __initconst = {
{ .compatible = "nvidia,tegra20-ictlr" },
{ .compatible = "nvidia,tegra30-ictlr" },
{ }
};
void __init tegra_init_irq(void)
{
if (WARN_ON(!of_find_matching_node(NULL, tegra_ictlr_match)))
pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
tegra114_gic_cpu_pm_registration();
}