1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright 2017 NXP 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef SM_PM_H 30 #define SM_PM_H 31 #include <stdint.h> 32 #include <types_ext.h> 33 34 struct sm_pm_ctx { 35 uint32_t sp; 36 paddr_t cpu_resume_addr; 37 uint32_t suspend_regs[16]; 38 }; 39 40 /* suspend/resume core functions */ 41 void sm_pm_cpu_suspend_save(struct sm_pm_ctx *ptr, uint32_t sp); 42 void sm_pm_cpu_do_suspend(uint32_t *ptr); 43 void sm_pm_cpu_do_resume(void); 44 45 /* 46 * Exported to platform suspend, arg will be passed to fn as r0 47 * Return value: 0 - cpu resumed from suspended state. 48 * -1 - cpu not suspended. 49 */ 50 int sm_pm_cpu_suspend(uint32_t arg, int (*fn)(uint32_t)); 51 #endif 52