1*70997d88SSimon Glass /* 2*70997d88SSimon Glass * (C) Copyright 2012 Stephen Warren 3*70997d88SSimon Glass * 4*70997d88SSimon Glass * SPDX-License-Identifier: GPL-2.0+ 5*70997d88SSimon Glass */ 6*70997d88SSimon Glass 7*70997d88SSimon Glass #include <common.h> 8*70997d88SSimon Glass #include <memalign.h> 9*70997d88SSimon Glass #include <asm/arch/mbox.h> 10*70997d88SSimon Glass 11*70997d88SSimon Glass struct msg_set_power_state { 12*70997d88SSimon Glass struct bcm2835_mbox_hdr hdr; 13*70997d88SSimon Glass struct bcm2835_mbox_tag_set_power_state set_power_state; 14*70997d88SSimon Glass u32 end_tag; 15*70997d88SSimon Glass }; 16*70997d88SSimon Glass 17*70997d88SSimon Glass int bcm2835_power_on_module(u32 module) 18*70997d88SSimon Glass { 19*70997d88SSimon Glass ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1); 20*70997d88SSimon Glass int ret; 21*70997d88SSimon Glass 22*70997d88SSimon Glass BCM2835_MBOX_INIT_HDR(msg_pwr); 23*70997d88SSimon Glass BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state, 24*70997d88SSimon Glass SET_POWER_STATE); 25*70997d88SSimon Glass msg_pwr->set_power_state.body.req.device_id = module; 26*70997d88SSimon Glass msg_pwr->set_power_state.body.req.state = 27*70997d88SSimon Glass BCM2835_MBOX_SET_POWER_STATE_REQ_ON | 28*70997d88SSimon Glass BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT; 29*70997d88SSimon Glass 30*70997d88SSimon Glass ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, 31*70997d88SSimon Glass &msg_pwr->hdr); 32*70997d88SSimon Glass if (ret) { 33*70997d88SSimon Glass printf("bcm2835: Could not set module %u power state\n", 34*70997d88SSimon Glass module); 35*70997d88SSimon Glass return -EIO; 36*70997d88SSimon Glass } 37*70997d88SSimon Glass 38*70997d88SSimon Glass return 0; 39*70997d88SSimon Glass } 40