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/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include "scmi.h"
#include "scmi_private.h"
/*
* API to set the SCMI power domain power state.
*/
int scmi_pwr_state_set(void *p, uint32_t domain_id,
uint32_t scmi_pwr_state)
{
mailbox_mem_t *mbx_mem;
int token = 0, ret;
/*
* Only asynchronous mode of `set power state` command is allowed on
* application processors.
*/
uint32_t pwr_state_set_msg_flag = SCMI_PWR_STATE_SET_FLAG_ASYNC;
scmi_channel_t *ch = (scmi_channel_t *)p;
validate_scmi_channel(ch);
scmi_get_channel(ch);
mbx_mem = (mailbox_mem_t *)(ch->info->scmi_mbx_mem);
mbx_mem->msg_header = SCMI_MSG_CREATE(SCMI_PWR_DMN_PROTO_ID,
SCMI_PWR_STATE_SET_MSG, token);
mbx_mem->len = SCMI_PWR_STATE_SET_MSG_LEN;
mbx_mem->flags = SCMI_FLAG_RESP_POLL;
SCMI_PAYLOAD_ARG3(mbx_mem->payload, pwr_state_set_msg_flag,
domain_id, scmi_pwr_state);
scmi_send_sync_command(ch);
/* Get the return values */
SCMI_PAYLOAD_RET_VAL1(mbx_mem->payload, ret);
assert(mbx_mem->len == SCMI_PWR_STATE_SET_RESP_LEN);
assert(token == SCMI_MSG_GET_TOKEN(mbx_mem->msg_header));
scmi_put_channel(ch);
return ret;
}
/*
* API to get the SCMI power domain power state.
*/
int scmi_pwr_state_get(void *p, uint32_t domain_id,
uint32_t *scmi_pwr_state)
{
mailbox_mem_t *mbx_mem;
int token = 0, ret;
scmi_channel_t *ch = (scmi_channel_t *)p;
validate_scmi_channel(ch);
scmi_get_channel(ch);
mbx_mem = (mailbox_mem_t *)(ch->info->scmi_mbx_mem);
mbx_mem->msg_header = SCMI_MSG_CREATE(SCMI_PWR_DMN_PROTO_ID,
SCMI_PWR_STATE_GET_MSG, token);
mbx_mem->len = SCMI_PWR_STATE_GET_MSG_LEN;
mbx_mem->flags = SCMI_FLAG_RESP_POLL;
SCMI_PAYLOAD_ARG1(mbx_mem->payload, domain_id);
scmi_send_sync_command(ch);
/* Get the return values */
SCMI_PAYLOAD_RET_VAL2(mbx_mem->payload, ret, *scmi_pwr_state);
assert(mbx_mem->len == SCMI_PWR_STATE_GET_RESP_LEN);
assert(token == SCMI_MSG_GET_TOKEN(mbx_mem->msg_header));
scmi_put_channel(ch);
return ret;
}
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