Release 4.9 arch/arm/mach-tegra/hotplug.c

/*
 *  Copyright (C) 2002 ARM Ltd.
 *  All Rights Reserved
 *  Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved.
 *
 * 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.
 */

#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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joseph lo
joseph lo
16
55.17%
2
50.00%
colin cross
colin cross
9
31.03%
1
25.00%
russell king
russell king
4
13.79%
1
25.00%
Total
29
100.00%
4
100.00%

/*
 * 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();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joseph lo
joseph lo
22
57.89%
3
60.00%
thierry reding
thierry reding
15
39.47%
1
20.00%
colin cross
colin cross
1
2.63%
1
20.00%
Total
38
100.00%
5
100.00%



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;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
joseph lo
joseph lo
43
44.79%
4
57.14%
hiroshi doyu
hiroshi doyu
28
29.17%
1
14.29%
thierry reding
thierry reding
25
26.04%
2
28.57%
Total
96
100.00%
7
100.00%


pure_initcall(tegra_hotplug_init);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
joseph lo
joseph lo
89
43.63%
6
42.86%
thierry reding
thierry reding
56
27.45%
4
28.57%
hiroshi doyu
hiroshi doyu
31
15.20%
1
7.14%
colin cross
colin cross
23
11.27%
1
7.14%
russell king
russell king
4
1.96%
1
7.14%
prashant gaikwad
prashant gaikwad
1
0.49%
1
7.14%
Total
204
100.00%
14
100.00%
  
Directory: arch/arm/mach-tegra