/*
 * 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.
 */

#ifndef EC_GOOGLE_WILCO_COMMANDS_H
#define EC_GOOGLE_WILCO_COMMANDS_H

#include <stdint.h>
#include <types.h>

enum {
	/* Read and clear power state information */
	KB_POWER_SMI = 0x04,
	/* Read but do not clear power state information */
	KB_POWER_STATUS = 0x05,
	/* Inform the EC aboout the reason host is turning off */
	KB_POWER_OFF = 0x08,
	/* Save PS/2 data before S3 suspend */
	KB_SAVE = 0x2f,
	/* Restore PS/2 data after S3 resume */
	KB_RESTORE = 0x30,
	/* Retrieve information about the EC */
	KB_EC_INFO = 0x38,
	/* Set ACPI mode on or off */
	KB_ACPI = 0x3a,
	/* Manage the EC power button passthru to the host */
	KB_POWER_BUTTON_TO_HOST = 0x3e,
	/* Manage the EC control of speaker mute */
	KB_HW_MUTE_CONTROL = 0x60,
	/* Inform the EC that the host is about to enter S3 */
	KB_SLP_EN = 0x64,
	/* Inform the EC about BIOS boot progress */
	KB_BIOS_PROGRESS = 0xc2,
};

enum set_acpi_mode_cmd {
	ACPI_OFF = 0,
	ACPI_ON
};

enum bios_progress_code {
	BIOS_PROGRESS_MEMORY_INIT = 0x01,
	BIOS_PROGRESS_VIDEO_INIT = 0x02,
	BIOS_PROGRESS_LOGO_DISPLAYED = 0x03,
	BIOS_PROGRESS_POST_COMPLETE = 0x04,
};

enum ec_audio_mute {
	AUDIO_MUTE = 0,		/* Mute speakers immediately */
	AUDIO_UNMUTE_125MS,	/* Unmute in 125ms */
};

/*
 * EC Information
 */

enum get_ec_info_cmd {
	GET_EC_LABEL = 0,
	GET_EC_SVN_REV,
	GET_EC_MODEL_NO,
	GET_EC_BUILD_DATE
};

#define EC_INFO_MAX_SIZE 9
struct ec_response_get_ec_info {
	char data[EC_INFO_MAX_SIZE]; /* ASCII NUL terminated string */
};

/**
 * wilco_ec_get_info
 *
 * Read a specific information string from the EC and return it in
 * the caller-provided buffer of at least EC_INFO_MAX_SIZE bytes.
 *
 * @cmd:	Information to retrieve
 * @info:	Character array of EC_INFO_MAX_SIZE bytes
 *
 * Returns 0 if successful and resulting string is in 'info'
 * Returns -1 if the EC command fails
 */
int wilco_ec_get_info(enum get_ec_info_cmd cmd, char *info);

/**
 * wilco_ec_print_all_info
 *
 * Retrieve and print all the information strings from the EC:
 *
 *  GET_EC_LABEL
 *  GET_EC_SVN_REV
 *  GET_EC_MODEL_NO
 *  GET_EC_BUILD_DATE
 */
void wilco_ec_print_all_info(void);

/*
 * EC Power State
 */

enum ec_power_off_reason {
	EC_PWROFF_FLASH = 0x11,
	EC_PWROFF_AC_REMOVED = 0x12,
	EC_PWROFF_BAT_REMOVED = 0x13,
	EC_PWROFF_LOBAT = 0x15,
	EC_PWROFF_PWRB_IN_POST = 0x16,
	EC_PWROFF_FORCE_IMMEDIATE = 0x18,
	EC_PWROFF_WDT = 0x1b,
	EC_PWROFF_FORCE_THERMAL = 0x22,
	EC_PWROFF_ERR_CODE = 0x23,
	EC_PWROFF_PAID_PWRGD = 0x27,
	EC_PWROFF_PAID_CPU = 0x28,
	EC_PWROFF_PAID_GFX = 0x29,
	EC_PWROFF_PAID_CLK = 0x2a,
	EC_PWROFF_PAID_NOMEMORY = 0x2b,
	EC_PWROFF_PAID_MEMORY_ERR = 0x2c,
	EC_PWROFF_PAID_MEMORY_SPD = 0x2d,
	EC_SWOFF_ACPI = 0x31,
	EC_SWOFF_BOOT_PASSWORD = 0x33,
	EC_SWOFF_DISK_PASSWORD = 0x34,
	EC_SWOFF_POWER_CYCLE = 0x37,
	EC_SWOFF_HARD_RESET = 0x3b,
	EC_SWOFF_FSMI = 0x3f,
	EC_PWRLOG_THERMTRIP = 0x41,
	EC_PWRLOG_NO_S5 = 0x42,
	EC_PWROFF_4S_PWRB = 0x44,
	EC_PWROFF_ASF2_FORCEOFF = 0x45,
	EC_PWROFF_PWRB_THERMAL = 0x48,
	EC_PWROFF_AOAC_TIMER = 0x4b,
};

/**
 * wilco_ec_power_off
 *
 * Tell the EC why the host is about to power off.
*/
void wilco_ec_power_off(enum ec_power_off_reason reason);

/**
 * wilco_ec_slp_en
 *
 * Tell the EC that the host is entering a sleep state.
 */
void wilco_ec_slp_en(void);

enum ec_pm1_state {
	EC_PM1_AC_AVAIL = BIT(0),	/* AC available */
	EC_PM1_BAT_AVAIL = BIT(1),	/* Battery available */
	EC_PM1_LO_BAT1 = BIT(2),	/* Battery 1 low */
	EC_PM1_LO_BAT2 = BIT(3),	/* Battery 2 low */
	EC_PM1_LID_OPEN = BIT(4),	/* Lid is open */
	EC_PM1_LCD_POWER = BIT(5),	/* LCD is powered */
	EC_PM1_OVER_TEMP = BIT(6),	/* CPU is over temperature */
	EC_PM1_DOCKED = BIT(7),		/* System is docked */
};

enum ec_pm2_state {
	EC_PM2_SYS_MB_PCIE = BIT(0),	/* MB has PCIe */
	EC_PM2_SYS_MB_SATA = BIT(1),	/* MB has SATA */
	EC_PM2_PWRB_PRESSED = BIT(2),	/* Power button is pressed */
	EC_PM2_TURBO_MODE = BIT(3),	/* Turbo mode */
};

enum ec_pm3_state {
	EC_PM3_BAT1_PRES = BIT(2),	/* Battery 1 is present */
	EC_PM3_BAT2_PRES = BIT(3),	/* Battery 2 is present */
	EC_PM3_LOWER_PSTATE = BIT(6),	/* EC requests lower P-state */
	EC_PM3_CPU_THROTTLE = BIT(7),	/* EC requests CPU throttle */
};

enum ec_pm4_state {
	EC_PM4_BAT1_CHG = BIT(0),	/* Battery 1 is being charged */
	EC_PM4_BAT2_CHG = BIT(1),	/* Battery 2 is being charged */
	EC_PM4_BAT1_PWR = BIT(2),	/* Battery 1 is powering the system */
	EC_PM4_BAT2_PWR = BIT(3),	/* Battery 2 is powering the system */
	EC_PM4_PANEL_STATE = BIT(5),	/* Panel power state */
};

enum ec_pm5_state {
	EC_PM5_INT_HD_SATA = BIT(7),	/* Internal SATA HDD */
};

enum ec_pm6_state {
	EC_PM6_WLAN_SWITCH = BIT(0),	/* Wireless switch */
	EC_PM6_SYS_MB_MODEM = BIT(1),	/* MB has modem */
	EC_PM6_ETH_STATE = BIT(2),	/* Ethernet cable state */
	EC_PM6_AC_UPDATE = BIT(3),	/* Update AC information */
};

enum ec_pm1_event {
	EC_EV1_PWRB_PRESSED = BIT(0),	/* Power button was pressed */
	EC_EV1_HOTKEY_PRESSED = BIT(1),	/* Hotkey was pressed */
	EC_EV1_STATE_CHANGED = BIT(2),	/* PMx state changed */
};

enum ec_pm2_event {
	EC_EV2_ACPI_MONSWITCH = BIT(0),	/* Monitor switch status */
};

struct ec_pm_event_state {
	uint8_t event[2];		/* ec_pm{1,2}_event */
	uint8_t state[6];		/* ec_pm{1,2,3,4,5,6}_state */
	uint8_t hotkey;			/* Hotkey, if pressed */
	uint16_t ac_type;		/* AC adapter information */
};

/**
 * wilco_ec_get_pm
 *
 * Retrieve power and event information from the EC.
 *
 * @pm:		Power event state structure to fill out
 * @clear:	Clear EC event state after reading
 *
 * Returns 0 if EC command was successful
 * Returns -1 if EC command failed
 */
int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear);

/**
 * wilco_ec_get_lid_state
 *
 * Retrieve the lid state without clearing it in the EC.
 *
 * Returns 1 if the lid is open, 0 if it is closed
 * Returns -1 if the EC command failed
 */
int wilco_ec_get_lid_state(void);

#endif /* EC_GOOGLE_WILCO_COMMANDS_H */