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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <console/console.h>
#include <stdint.h>
#include <string.h>
#include "ec.h"
#include "commands.h"
int wilco_ec_get_info(enum get_ec_info_cmd type, char *info)
{
struct ec_response_get_ec_info rsp;
if (!info)
return -1;
if (wilco_ec_sendrecv(KB_EC_INFO, type, &rsp, sizeof(rsp)) < 0)
return -1;
/* Copy returned string */
strncpy(info, rsp.data, sizeof(rsp.data));
return 0;
}
void wilco_ec_print_all_info(void)
{
char info[EC_INFO_MAX_SIZE];
if (!wilco_ec_get_info(GET_EC_LABEL, info))
printk(BIOS_INFO, "EC Label : %s\n", info);
if (!wilco_ec_get_info(GET_EC_SVN_REV, info))
printk(BIOS_INFO, "EC Revision : %s\n", info);
if (!wilco_ec_get_info(GET_EC_MODEL_NO, info))
printk(BIOS_INFO, "EC Model Num : %s\n", info);
if (!wilco_ec_get_info(GET_EC_BUILD_DATE, info))
printk(BIOS_INFO, "EC Build Date : %s\n", info);
}
static int wilco_ec_get_power_smi(struct ec_pm_event_state *pm)
{
struct ec_response_power_smi {
uint8_t pm_event_1;
uint8_t pm_state_1;
uint8_t hotkey;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t pm_event_2;
uint8_t pm_state_6;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_SMI, &rsp, sizeof(rsp)) < 0)
return -1;
pm->event[0] = rsp.pm_event_1;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->hotkey = rsp.hotkey;
return 0;
}
static int wilco_ec_get_power_status(struct ec_pm_event_state *pm)
{
struct ec_response_power_status {
uint8_t pm_state_1;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t ac_type_lsb;
uint8_t pm_state_6;
uint8_t pm_event_2;
uint8_t ac_type_msb;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_STATUS, &rsp, sizeof(rsp)) < 0)
return -1;
pm->hotkey = 0;
pm->event[0] = 0;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->ac_type = rsp.ac_type_msb << 8 | rsp.ac_type_lsb;
return 0;
}
int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear)
{
if (clear)
return wilco_ec_get_power_smi(pm);
else
return wilco_ec_get_power_status(pm);
}
int wilco_ec_get_lid_state(void)
{
struct ec_pm_event_state pm;
if (wilco_ec_get_power_status(&pm) < 0)
return -1;
return !!(pm.state[0] & EC_PM1_LID_OPEN);
}
void wilco_ec_slp_en(void)
{
/* EC does not respond to this command */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_SLP_EN, NULL, 0, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}
void wilco_ec_power_off(enum ec_power_off_reason reason)
{
/* EC does not respond to this command */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_POWER_OFF, &reason, 1, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}
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