linux/arch/arm/mach-tegra/hotplug.c
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 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 version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

75 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2002 ARM Ltd.
* All Rights Reserved
* Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved.
*/
#include <linux/clk/tegra.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <soc/tegra/common.h>
#include <soc/tegra/fuse.h>
#include <asm/smp_plat.h>
#include "common.h"
#include "sleep.h"
static void (*tegra_hotplug_shutdown)(void);
int tegra_cpu_kill(unsigned cpu)
{
cpu = cpu_logical_map(cpu);
/* Clock gate the CPU */
tegra_wait_cpu_in_reset(cpu);
tegra_disable_cpu_clock(cpu);
return 1;
}
/*
* platform-specific code to shutdown a CPU
*
* Called with IRQs disabled
*/
void tegra_cpu_die(unsigned int cpu)
{
if (!tegra_hotplug_shutdown) {
WARN(1, "hotplug is not yet initialized\n");
return;
}
/* Clean L1 data cache */
tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS);
/* Shut down the current CPU. */
tegra_hotplug_shutdown();
/* Should never return here. */
BUG();
}
static int __init tegra_hotplug_init(void)
{
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU))
return 0;
if (!soc_is_tegra())
return 0;
if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_get_chip_id() == TEGRA20)
tegra_hotplug_shutdown = tegra20_hotplug_shutdown;
if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_get_chip_id() == TEGRA30)
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_get_chip_id() == TEGRA114)
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_get_chip_id() == TEGRA124)
tegra_hotplug_shutdown = tegra30_hotplug_shutdown;
return 0;
}
pure_initcall(tegra_hotplug_init);