| /* |
| * 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__); |
| } |
| |
| int wilco_ec_radio_control(enum ec_radio radio, uint8_t state) |
| { |
| uint8_t radio_control[3] = { 0, radio, state }; |
| |
| return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_RADIO_CONTROL, |
| radio_control, ARRAY_SIZE(radio_control), |
| NULL, 0); |
| } |
| |
| int wilco_ec_change_wake(uint8_t source, enum ec_wake_change change) |
| { |
| uint8_t wake_source[3] = { change, source }; |
| |
| return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_ACPI_WAKEUP_CHANGE, |
| wake_source, ARRAY_SIZE(wake_source), |
| NULL, 0); |
| } |