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