projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1cea7326 | 1 | /* |
| 1cea7326 CC |
2 | * Copyright (C) 2002 ARM Ltd. |
| 3 | * All Rights Reserved | |
| 7469688e | 4 | * Copyright (c) 2010, 2012-2013, NVIDIA Corporation. All rights reserved. |
| 1cea7326 CC |
5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | #include <linux/kernel.h> | |
| 1cea7326 | 11 | #include <linux/smp.h> |
| 89572c77 | 12 | #include <linux/clk/tegra.h> |
| 1cea7326 | 13 | |
| 59b0f682 | 14 | #include <asm/smp_plat.h> |
| 1cea7326 | 15 | |
| 7469688e | 16 | #include "fuse.h" |
| 59b0f682 | 17 | #include "sleep.h" |
| 1cea7326 | 18 | |
| 59b0f682 | 19 | static void (*tegra_hotplug_shutdown)(void); |
| 1cea7326 | 20 | |
| b8119431 JL |
21 | int tegra_cpu_kill(unsigned cpu) |
| 22 | { | |
| 23 | cpu = cpu_logical_map(cpu); | |
| 24 | ||
| 25 | /* Clock gate the CPU */ | |
| 26 | tegra_wait_cpu_in_reset(cpu); | |
| 27 | tegra_disable_cpu_clock(cpu); | |
| 28 | ||
| 29 | return 1; | |
| 30 | } | |
| 31 | ||
| 1cea7326 CC |
32 | /* |
| 33 | * platform-specific code to shutdown a CPU | |
| 34 | * | |
| 35 | * Called with IRQs disabled | |
| 36 | */ | |
| a1725732 | 37 | void __ref tegra_cpu_die(unsigned int cpu) |
| 1cea7326 | 38 | { |
| 57886616 | 39 | /* Clean L1 data cache */ |
| ac2527bf | 40 | tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS); |
| 1cea7326 | 41 | |
| 59b0f682 JL |
42 | /* Shut down the current CPU. */ |
| 43 | tegra_hotplug_shutdown(); | |
| 44 | ||
| 59b0f682 JL |
45 | /* Should never return here. */ |
| 46 | BUG(); | |
| 1cea7326 CC |
47 | } |
| 48 | ||
| 7469688e | 49 | void __init tegra_hotplug_init(void) |
| 453689e4 | 50 | { |
| 7469688e HD |
51 | if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) |
| 52 | return; | |
| 453689e4 | 53 | |
| 7469688e HD |
54 | if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_chip_id == TEGRA20) |
| 55 | tegra_hotplug_shutdown = tegra20_hotplug_shutdown; | |
| 56 | if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) | |
| 57 | tegra_hotplug_shutdown = tegra30_hotplug_shutdown; | |
| 33d5c019 JL |
58 | if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_chip_id == TEGRA114) |
| 59 | tegra_hotplug_shutdown = tegra30_hotplug_shutdown; | |
| 9997e626 JL |
60 | if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_chip_id == TEGRA124) |
| 61 | tegra_hotplug_shutdown = tegra30_hotplug_shutdown; | |
| 59b0f682 | 62 | } |