David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
| 4 | * JZ4740 SoC power management support |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <linux/init.h> |
| 8 | #include <linux/pm.h> |
| 9 | #include <linux/delay.h> |
| 10 | #include <linux/suspend.h> |
| 11 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 12 | static int jz4740_pm_enter(suspend_state_t state) |
| 13 | { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 14 | __asm__(".set\tmips3\n\t" |
| 15 | "wait\n\t" |
| 16 | ".set\tmips0"); |
| 17 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 18 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 19 | |
| 20 | return 0; |
| 21 | } |
| 22 | |
| 23 | static const struct platform_suspend_ops jz4740_pm_ops = { |
| 24 | .valid = suspend_valid_only_mem, |
| 25 | .enter = jz4740_pm_enter, |
| 26 | }; |
| 27 | |
| 28 | static int __init jz4740_pm_init(void) |
| 29 | { |
| 30 | suspend_set_ops(&jz4740_pm_ops); |
| 31 | return 0; |
| 32 | |
| 33 | } |
| 34 | late_initcall(jz4740_pm_init); |