From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/arm/mach-tegra/hotplug.c | 58 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 arch/arm/mach-tegra/hotplug.c (limited to 'arch/arm/mach-tegra/hotplug.c') diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c new file mode 100644 index 00000000..184914a6 --- /dev/null +++ b/arch/arm/mach-tegra/hotplug.c @@ -0,0 +1,58 @@ +/* + * 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 +#include +#include + +#include + +#include "fuse.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 __ref tegra_cpu_die(unsigned int cpu) +{ + /* Clean L1 data cache */ + tegra_disable_clean_inv_dcache(); + + /* Shut down the current CPU. */ + tegra_hotplug_shutdown(); + + /* Should never return here. */ + BUG(); +} + +void __init tegra_hotplug_init(void) +{ + if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) + return; + + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_chip_id == TEGRA20) + tegra_hotplug_shutdown = tegra20_hotplug_shutdown; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) + tegra_hotplug_shutdown = tegra30_hotplug_shutdown; +} -- cgit v1.3.1