/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Host communication command constants for ChromeOS EC
*
* Copyright (C) 2012 Google, Inc
*
* NOTE: This file is auto-generated from ChromeOS EC Open Source code from
* https://chromium.googlesource.com/chromiumos/platform/ec/+/master/include/ec_commands.h
*/
/* Host communication command constants for Chrome EC */
#ifndef __CROS_EC_COMMANDS_H
#define __CROS_EC_COMMANDS_H
#include <linux/bits.h>
#include <linux/types.h>
#define BUILD_ASSERT(_cond)
/*
* Current version of this protocol
*
* TODO(crosbug.com/p/11223): This is effectively useless; protocol is
* determined in other ways. Remove this once the kernel code no longer
* depends on it.
*/
#define EC_PROTO_VERSION 0x00000002
/* Command version mask */
#define EC_VER_MASK(version) BIT(version)
/* I/O addresses for ACPI commands */
#define EC_LPC_ADDR_ACPI_DATA 0x62
#define EC_LPC_ADDR_ACPI_CMD 0x66
/* I/O addresses for host command */
#define EC_LPC_ADDR_HOST_DATA 0x200
#define EC_LPC_ADDR_HOST_CMD 0x204
/* I/O addresses for host command args and params */
/* Protocol version 2 */
#define EC_LPC_ADDR_HOST_ARGS 0x800
/* And 0x801, 0x802, 0x803 */
#define EC_LPC_ADDR_HOST_PARAM 0x804
/* For version 2 params; size is
* EC_PROTO2_MAX_PARAM_SIZE
*/
/* Protocol version 3 */
#define EC_LPC_ADDR_HOST_PACKET 0x800
/* Offset of version 3 packet */
#define EC_LPC_HOST_PACKET_SIZE 0x100
/* Max size of version 3 packet */
/*
* The actual block is 0x800-0x8ff, but some BIOSes think it's 0x880-0x8ff
* and they tell the kernel that so we have to think of it as two parts.
*
* Other BIOSes report only the I/O port region spanned by the Microchip
* MEC series EC; an attempt to address a larger region may fail.
*/
#define EC_HOST_CMD_REGION0 0x800
#define EC_HOST_CMD_REGION1 0x880
#define EC_HOST_CMD_REGION_SIZE 0x80
#define EC_HOST_CMD_MEC_REGION_SIZE 0x8
/* EC command register bit functions */
#define EC_LPC_CMDR_DATA BIT(0)
/* Data ready for host to read */
#define EC_LPC_CMDR_PENDING BIT(1)
/* Write pending to EC */
#define EC_LPC_CMDR_BUSY BIT(2)
/* EC is busy processing a command */
#define EC_LPC_CMDR_CMD BIT(3)
/* Last host write was a command */
#define EC_LPC_CMDR_ACPI_BRST BIT(4)
/* Burst mode (not used) */
#define EC_LPC_CMDR_SCI BIT(5)
/* SCI event is pending */
#define EC_LPC_CMDR_SMI BIT(6)
/* SMI event is pending */
#define EC_LPC_ADDR_MEMMAP 0x900
#define EC_MEMMAP_SIZE 255
/* ACPI IO buffer max is 255 bytes */
#define EC_MEMMAP_TEXT_MAX 8
/* Size of a string in the memory map */
/* The offset address of each type of data in mapped memory. */
#define EC_MEMMAP_TEMP_SENSOR 0x00
/* Temp sensors 0x00 - 0x0f */
#define EC_MEMMAP_FAN 0x10
/* Fan speeds 0x10 - 0x17 */
#define EC_MEMMAP_TEMP_SENSOR_B 0x18
/* More temp sensors 0x18 - 0x1f */
#define EC_MEMMAP_ID 0x20
/* 0x20 == 'E', 0x21 == 'C' */
#define EC_MEMMAP_ID_VERSION 0x22
/* Version of data in 0x20 - 0x2f */
#define EC_MEMMAP_THERMAL_VERSION 0x23
/* Version of data in 0x00 - 0x1f */
#define EC_MEMMAP_BATTERY_VERSION 0x24
/* Version of data in 0x40 - 0x7f */
#define EC_MEMMAP_SWITCHES_VERSION 0x25
/* Version of data in 0x30 - 0x33 */
#define EC_MEMMAP_EVENTS_VERSION 0x26
/* Version of data in 0x34 - 0x3f */
#define EC_MEMMAP_HOST_CMD_FLAGS 0x27
/* Host cmd interface flags (8 bits) */
/* Unused 0x28 - 0x2f */
#define EC_MEMMAP_SWITCHES 0x30
/* 8 bits */
/* Unused 0x31 - 0x33 */
#define EC_MEMMAP_HOST_EVENTS 0x34
/* 64 bits */
/* Battery values are all 32 bits, unless otherwise noted. */
#define EC_MEMMAP_BATT_VOLT 0x40
/* Battery Present Voltage */
#define EC_MEMMAP_BATT_RATE 0x44
/* Battery Present Rate */
#define EC_MEMMAP_BATT_CAP 0x48
/* Battery Remaining Capacity */
#define EC_MEMMAP_BATT_FLAG 0x4c
/* Battery State, see below (8-bit) */
#define EC_MEMMAP_BATT_COUNT 0x4d
/* Battery Count (8-bit) */
#define EC_MEMMAP_BATT_INDEX 0x4e
/* Current Battery Data Index (8-bit) */
/* Unused 0x4f */
#define EC_MEMMAP_BATT_DCAP 0x50
/* Battery Design Capacity */
#define EC_MEMMAP_BATT_DVLT 0x54
/* Battery Design Voltage */
#define EC_MEMMAP_BATT_LFCC 0x58
/* Battery Last Full Charge Capacity */
#define EC_MEMMAP_BATT_CCNT 0x5c
/* Battery Cycle Count */
/* Strings are all 8 bytes (EC_MEMMAP_TEXT_MAX) */
#define EC_MEMMAP_BATT_MFGR 0x60
/* Battery Manufacturer String */
#define EC_MEMMAP_BATT_MODEL 0x68
/* Battery Model Number String */
#define EC_MEMMAP_BATT_SERIAL 0x70
/* Battery Serial Number String */
#define EC_MEMMAP_BATT_TYPE 0x78
/* Battery Type String */
#define EC_MEMMAP_ALS 0x80
/* ALS readings in lux (2 X 16 bits) */
/* Unused 0x84 - 0x8f */
#define EC_MEMMAP_ACC_STATUS 0x90
/* Accelerometer status (8 bits )*/
/* Unused 0x91 */
#define EC_MEMMAP_ACC_DATA 0x92
/* Accelerometers data 0x92 - 0x9f */
/* 0x92: Lid Angle if available, LID_ANGLE_UNRELIABLE otherwise */
/* 0x94 - 0x99: 1st Accelerometer */
/* 0x9a - 0x9f: 2nd Accelerometer */
#define EC_MEMMAP_GYRO_DATA 0xa0
/* Gyroscope data 0xa0 - 0xa5 */
/* Unused 0xa6 - 0xdf */
/*
* ACPI is unable to access memory mapped data at or above this offset due to
* limitations of the ACPI protocol. Do not place data in the range 0xe0 - 0xfe
* which might be needed by ACPI.
*/
#define EC_MEMMAP_NO_ACPI 0xe0
/* Define the format of the accelerometer mapped memory status byte. */
#define EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK 0x0f
#define EC_MEMMAP_ACC_STATUS_BUSY_BIT BIT(4)
#define EC_MEMMAP_ACC_STATUS_PRESENCE_BIT BIT(7)
/* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR */
#define EC_TEMP_SENSOR_ENTRIES 16
/*
* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR_B.
*
* Valid only if EC_MEMMAP_THERMAL_VERSION returns >= 2.
*/
#define EC_TEMP_SENSOR_B_ENTRIES 8
/* Special values for mapped temperature sensors */
#define EC_TEMP_SENSOR_NOT_PRESENT 0xff
#define EC_TEMP_SENSOR_ERROR 0xfe
#define EC_TEMP_SENSOR_NOT_POWERED 0xfd
#define EC_TEMP_SENSOR_NOT_CALIBRATED 0xfc
/*
* The offset of temperature value stored in mapped memory. This allows
* reporting a temperature range of 200K to 454K = -73C to 181C.
*/
#define EC_TEMP_SENSOR_OFFSET 200
/*
* Number of ALS readings at EC_MEMMAP_ALS
*/
#define EC_ALS_ENTRIES 2
/*
* The default value a temperature sensor will return when it is present but
* has not been read this boot. This is a reasonable number to avoid
* triggering alarms on the host.
*/
#define EC_TEMP_SENSOR_DEFAULT (296 - EC_TEMP_SENSOR_OFFSET)
#define EC_FAN_SPEED_ENTRIES 4
/* Number of fans at EC_MEMMAP_FAN */
#define EC_FAN_SPEED_NOT_PRESENT 0xffff
/* Entry not present */
#define EC_FAN_SPEED_STALLED 0xfffe
/* Fan stalled */
/* Battery bit flags at EC_MEMMAP_BATT_FLAG. */
#define EC_BATT_FLAG_AC_PRESENT 0x01
#define EC_BATT_FLAG_BATT_PRESENT 0x02
#define EC_BATT_FLAG_DISCHARGING 0x04
#define EC_BATT_FLAG_CHARGING 0x08
#define EC_BATT_FLAG_LEVEL_CRITICAL 0x10
/* Set if some of the static/dynamic data is invalid (or outdated). */
#define EC_BATT_FLAG_INVALID_DATA 0x20
/* Switch flags at EC_MEMMAP_SWITCHES */
#define EC_SWITCH_LID_OPEN 0x01
#define EC_SWITCH_POWER_BUTTON_PRESSED 0x02
#define EC_SWITCH_WRITE_PROTECT_DISABLED 0x04
/* Was recovery requested via keyboard; now unused. */
#define EC_SWITCH_IGNORE1 0x08
/* Recovery requested via dedicated signal (from servo board) */
#define EC_SWITCH_DEDICATED_RECOVERY 0x10
/* Was fake developer mode switch; now unused. Remove in next refactor. */
#define EC_SWITCH_IGNORE0 0x20
/* Host command interface flags */
/* Host command interface supports LPC args (LPC interface only) */
#define EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED 0x01
/* Host command interface supports version 3 protocol */
#define EC_HOST_CMD_FLAG_VERSION_3 0x02
/* Wireless switch flags */
#define EC_WIRELESS_SWITCH_ALL ~0x00
/* All flags */
#define EC_WIRELESS_SWITCH_WLAN 0x01
/* WLAN radio */
#define EC_WIRELESS_SWITCH_BLUETOOTH 0x02
/* Bluetooth radio */
#define EC_WIRELESS_SWITCH_WWAN 0x04
/* WWAN power */
#define EC_WIRELESS_SWITCH_WLAN_POWER 0x08
/* WLAN power */
/*****************************************************************************/
/*
* ACPI commands
*
* These are valid ONLY on the ACPI command/data port.
*/
/*
* ACPI Read Embedded Controller
*
* This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
*
* Use the following sequence:
*
* - Write EC_CMD_ACPI_READ to EC_LPC_ADDR_ACPI_CMD
* - Wait for EC_LPC_CMDR_PENDING bit to clear
* - Write address to EC_LPC_ADDR_ACPI_DATA
* - Wait for EC_LPC_CMDR_DATA bit to set
* - Read value from EC_LPC_ADDR_ACPI_DATA
*/
#define EC_CMD_ACPI_READ 0x0080
/*
* ACPI Write Embedded Controller
*
* This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
*
* Use the following sequence:
*
* - Write EC_CMD_ACPI_WRITE to EC_LPC_ADDR_ACPI_CMD
* - Wait for EC_LPC_CMDR_PENDING bit to clear
* - Write address to EC_LPC_ADDR_ACPI_DATA
* - Wait for EC_LPC_CMDR_PENDING bit to clear
* - Write value to EC_LPC_ADDR_ACPI_DATA
*/
#define EC_CMD_ACPI_WRITE 0x0081
/*
* ACPI Burst Enable Embedded Controller
*
* This enables burst mode on the EC to allow the host to issue several
* commands back-to-back. While in this mode, writes to mapped multi-byte
* data are locked out to ensure data consistency.
*/
#define EC_CMD_ACPI_BURST_ENABLE 0x0082
/*
* ACPI Burst Disable Embedded Controller
*
* This disables burst mode on the EC and stops preventing EC writes to mapped
* multi-byte data.
*/
#define EC_CMD_ACPI_BURST_DISABLE 0x0083
/*
* ACPI Query Embedded Controller
*
* This clears the lowest-order bit in the currently pending host events, and
* sets the result code to the 1-based index of the bit (event 0x00000001 = 1,
* event 0x80000000 = 32), or 0 if no event was pending.
*/
#define EC_CMD_ACPI_QUERY_EVENT 0x0084
/* Valid addresses in ACPI memory space, for read/write commands */
/* Memory space version; set to EC_ACPI_MEM_VERSION_CURRENT */
#define EC_ACPI_MEM_VERSION 0x00
/*
* Test location; writing value here updates test compliment byte to (0xff -
* value).
*/
#define EC_ACPI_MEM_TEST 0x01
/* Test compliment; writes here are ignored. */
#define EC_ACPI_MEM_TEST_COMPLIMENT 0x02
/* Keyboard backlight brightness percent (0 - 100) */
#define EC_ACPI_MEM_KEYBOARD_BACKLIGHT 0x03
/* DPTF Target Fan Duty (0-100, 0xff for auto/none) */
#define EC_ACPI_MEM_FAN_DUTY 0x04
/*
* DPTF temp thresholds. Any of the EC's temp sensors can have up to two
* independent thresholds attached to them. The current value of the ID
* register determines which sensor is affected by the THRESHOLD and COMMIT
* registers. The THRESHOLD register uses the same EC_TEMP_SENSOR_OFFSET scheme
* as the memory-mapped sensors. The COMMIT register applies those settings.
*
* The spec does not mandate any way to read back the threshold settings
* themselves, but when a threshold is crossed the AP needs a way to determine
* which sensor(s) are responsible. Each reading of the ID register clears and
* returns one sensor ID that has crossed one of its threshold (in either
* direction) since the last read. A value of 0xFF means "no new thresholds
* have tripped". Setting or enabling the thresholds for a sensor will clear
* the unread event count for that sensor.
*/
#define EC_ACPI_MEM_TEMP_ID 0x05
#define EC_ACPI_MEM_TEMP_THRESHOLD 0x06
#define EC_ACPI_MEM_TEMP_COMMIT 0x07
/*
* Here are the bits for the COMMIT register:
* bit 0 selects the threshold index for the chosen sensor (0/1)
* bit 1 enables/disables the selected threshold (0 = off, 1 = on)
* Each write to the commit register affects one threshold.
*/
#define EC_ACPI_MEM_TEMP_COMMIT_SELECT_MASK BIT(0)
#define EC_ACPI_MEM_TEMP_COMMIT_ENABLE_MASK BIT(1)
/*
* Example:
*
* Set the thresholds for sensor 2 to 50 C and 60 C:
* write 2 to [0x05] -- select temp sensor 2
* write 0x7b to [0x06] -- C_TO_K(50) - EC_TEMP_SENSOR_OFFSET
* write 0x2 to [0x07] -- enable threshold 0 with this value
* write 0x85 to [0x06] -- C_TO_K(60) - EC_TEMP_SENSOR_OFFSET
* write 0x3 to [0x07] -- enable threshold 1 with this value
*
* Disable the 60 C threshold, leaving the 50 C threshold unchanged:
* write 2 to [0x05] -- select temp sensor 2
* write 0x1 to [0x07] -- disable threshold 1
*/
/* DPTF battery charging current limit */
#define EC_ACPI_MEM_CHARGING_LIMIT 0x08
/* Charging limit is specified in 64 mA steps */
#define EC_ACPI_MEM_CHARGING_LIMIT_STEP_MA 64
/* Value to disable DPTF battery charging limit */
#define EC_ACPI_MEM_CHARGING_LIMIT_DISABLED 0xff
/*
* Report device orientation
* Bits Definition
* 3:1 Device DPTF Profile Number (DDPN)
* 0 = Reserved for backward compatibility (indicates no valid
* profile number. Host should fall back to using TBMD).
* 1..7 = DPTF Profile number to indicate to host which table needs
* to be loaded.
* 0 Tablet Mode Device Indicator (TBMD)
*/
#define EC_ACPI_MEM_DEVICE_ORIENTATION 0x09
#define EC_ACPI_MEM_TBMD_SHIFT 0
#define EC_ACPI_MEM_TBMD_MASK 0x1
#define EC_ACPI_MEM_DDPN_SHIFT 1
#define EC_ACPI_MEM_DDPN_MASK 0x7
/*
* Report device features. Uses the same format as the host command, except:
*
* bit 0 (EC_FEATURE_LIMITED) changes meaning from "EC code has a limited set
* of features", which is of limited interest when the system is already
* interpreting ACPI bytecode, to "EC_FEATURES[0-7] is not supported". Since
* these are supported, it defaults to 0.
* This allows detecting the presence of this field since older versions of
* the EC codebase would simply return 0xff to that unknown address. Check
* FEATURES0 != 0xff (or FEATURES0[0] == 0) to make sure that the other bits
* are valid.
*/
#define EC_ACPI_MEM_DEVICE_FEATURES0 0x0a
#define EC_ACPI_MEM_DEVICE_FEATURES1 0x0b
#define EC_ACPI_MEM_DEVICE_FEATURES2 0x0c
#define EC_ACPI_MEM_DEVICE_FEATURES3 0x0d
#define EC_ACPI_MEM_DEVICE_FEATURES4 0x0e
#define EC_ACPI_MEM_DEVICE_FEATURES5 0x0f
#define EC_ACPI_MEM_DEVICE_FEATURES6 0x10
#define EC_ACPI_MEM_DEVICE_FEATURES7 0x11
#define EC_ACPI_MEM_BATTERY_INDEX 0x12
/*
* USB Port Power. Each bit indicates whether the corresponding USB ports' power
* is enabled (1) or disabled (0).
* bit 0 USB port ID 0
* ...
* bit 7 USB port ID 7
*/
#define EC_ACPI_MEM_USB_PORT_POWER 0x13
/*
* ACPI addresses 0x20 - 0xff map to EC_MEMMAP offset 0x00 - 0xdf. This data
* is read-only from the AP. Added in EC_ACPI_MEM_VERSION 2.
*/
#define EC_ACPI_MEM_MAPPED_BEGIN 0x20
#define EC_ACPI_MEM_MAPPED_SIZE 0xe0
/* Current version of ACPI memory address space */
#define EC_ACPI_MEM_VERSION_CURRENT 2
/*
* This header file is used in coreboot both in C and ACPI code. The ACPI code
* is pre-processed to handle constants but the ASL compiler is unable to
* handle actual C code so keep it separate.
*/
/*
* Attributes for EC request and response packets. Just defining __packed
* results in inefficient assembly code on ARM, if the structure is actually
* 32-bit aligned, as it should be for all buffers.
*
* Be very careful when adding these to existing structures. They will round
* up the structure size to the specified boundary.
*
* Also be very careful to make that if a structure is included in some other
* parent structure that the alignment will still be true given the packing of
* the parent structure. This is particularly important if the sub-structure
* will be passed as a pointer to another function, since that function will
* not know about the misaligment caused by the parent structure's packing.
*
* Also be very careful using __packed - particularly when nesting non-packed
* structures inside packed ones. In fact, DO NOT use __packed directly;
* always use one of these attributes.
*
* Once everything is annotated properly, the following search strings should
* not return ANY matches in this file other than right here:
*
* "__packed" - generates inefficient code; all sub-structs must also be packed
*
* "struct [^_]" - all structs should be annotated, except for structs that are
* members of other structs/unions (and their original declarations should be
* annotated).
*/
/*
* Packed structures make no assumption about alignment, so they do inefficient
* byte-wise reads.
*/
#define __ec_align1 __packed
#define __ec_align2 __packed
#define __ec_align4 __packed
#define __ec_align_size1 __packed
#define __ec_align_offset1 __packed
#define __ec_align_offset2 __packed
#define __ec_todo_packed __packed
#define __ec_todo_unpacked
/* LPC command status byte masks */
/* EC has written a byte in the data register and host hasn't read it yet */
#define EC_LPC_STATUS_TO_HOST 0x01
/* Host has written a command/data byte and the EC hasn't read it yet */
#define EC_LPC_STATUS_FROM_HOST 0x02
/* EC is processing a command */
#define EC_LPC_STATUS_PROCESSING 0x04
/* Last write to EC was a command, not data */
#define EC_LPC_STATUS_LAST_CMD 0x08
/* EC is in burst mode */
#define EC_LPC_STATUS_BURST_MODE 0x10
/* SCI event is pending (requesting SCI query) */
#define EC_LPC_STATUS_SCI_PENDING 0x20
/* SMI event is pending (requesting SMI query) */
#define EC_LPC_STATUS_SMI_PENDING 0x40
/* (reserved) */
#define EC_LPC_STATUS_RESERVED 0x80
/*
* EC is busy. This covers both the EC processing a command, and the host has
* written a new command but the EC hasn't picked it up yet.
*/
#define EC_LPC_STATUS_BUSY_MASK \
(EC_LPC_STATUS_FROM_HOST | EC_LPC_STATUS_PROCESSING)
/*
* Host command response codes (16-bit). Note that response codes should be
* stored in a uint16_t rather than directly in a value of this type.
*/
enum ec_status {
EC_RES_SUCCESS = 0,
EC_RES_INVALID_COMMAND = 1,
EC_RES_ERROR = 2,
EC_RES_INVALID_PARAM = 3,
EC_RES_ACCESS_DENIED = 4,
EC_RES_INVALID_RESPONSE = 5,
EC_RES_INVALID_VERSION = 6,
EC_RES_INVALID_CHECKSUM = 7,
EC_RES_IN_PROGRESS = 8,
/* Accepted, command in progress */
EC_RES_UNAVAILABLE = 9,
/* No response available */
EC_RES_TIMEOUT = 10,
/* We got a timeout */
EC_RES_OVERFLOW = 11,
/* Table / data overflow */
EC_RES_INVALID_HEADER = 12,
/* Header contains invalid data */
EC_RES_REQUEST_TRUNCATED = 13,
/* Didn't get the entire request */
EC_RES_RESPONSE_TOO_BIG = 14,
/* Response was too big to handle */
EC_RES_BUS_ERROR = 15,
/* Communications bus error */
EC_RES_BUSY = 16,
/* Up but too busy. Should retry */
EC_RES_INVALID_HEADER_VERSION = 17,
/* Header version invalid */
EC_RES_INVALID_HEADER_CRC = 18,
/* Header CRC invalid */
EC_RES_INVALID_DATA_CRC = 19,
/* Data CRC invalid */
EC_RES_DUP_UNAVAILABLE = 20,
/* Can't resend response */
};
/*
* Host event codes. Note these are 1-based, not 0-based, because ACPI query
* EC command uses code 0 to mean "no event pending". We explicitly specify
* each value in the enum listing so they won't change if we delete/insert an
* item or rearrange the list (it needs to be stable across platforms, not
* just within a single compiled instance).
*/
enum host_event_code {
EC_HOST_EVENT_LID_CLOSED = 1,
EC_HOST_EVENT_LID_OPEN = 2,
EC_HOST_EVENT_POWER_BUTTON = 3,
EC_HOST_EVENT_AC_CONNECTED = 4,
EC_HOST_EVENT_AC_DISCONNECTED = 5,
EC_HOST_EVENT_BATTERY_LOW = 6,
EC_HOST_EVENT_BATTERY_CRITICAL = 7,
EC_HOST_EVENT_BATTERY = 8,
EC_HOST_EVENT_THERMAL_THRESHOLD = 9,
/* Event generated by a device attached to the EC */
EC_HOST_EVENT_DEVICE = 10,
EC_HOST_EVENT_THERMAL = 11,
EC_HOST_EVENT_USB_CHARGER = 12,
EC_HOST_EVENT_KEY_PRESSED = 13,
/*
* EC has finished initializing the host interface. The host can check
* for this event following sending a EC_CMD_REBOOT_EC command to
* determine when the EC is ready to accept subsequent commands.
*/
EC_HOST_EVENT_INTERFACE_READY = 14,
/* Keyboard recovery combo has been pressed */
EC_HOST_EVENT_KEYBOARD_RECOVERY = 15,
/* Shutdown due to thermal overload */
EC_HOST_EVENT_THERMAL_SHUTDOWN = 16,
/* Shutdown due to battery level too low */
EC_HOST_EVENT_BATTERY_SHUTDOWN = 17,
/* Suggest that the AP throttle itself */
EC_HOST_EVENT_THROTTLE_START = 18,
/* Suggest that the AP resume normal speed */
EC_HOST_EVENT_THROTTLE_STOP = 19,
/* Hang detect logic detected a hang and host event timeout expired */
EC_HOST_EVENT_HANG_DETECT = 20,
/* Hang detect logic detected a hang and warm rebooted the AP */
EC_HOST_EVENT_HANG_REBOOT = 21,
/* PD MCU triggering host event */
EC_HOST_EVENT_PD_MCU = 22,
/* Battery Status flags have changed */
EC_HOST_EVENT_BATTERY_STATUS = 23,
/* EC encountered a panic, triggering a reset */
EC_HOST_EVENT_PANIC = 24,
/* Keyboard fastboot combo has been pressed */
EC_HOST_EVENT_KEYBOARD_FASTBOOT = 25,
/* EC RTC event occurred */
EC_HOST_EVENT_RTC = 26,
/* Emulate MKBP event */
EC_HOST_EVENT_MKBP = 27,
/* EC desires to change state of host-controlled USB mux */
EC_HOST_EVENT_USB_MUX = 28,
/* TABLET/LAPTOP mode or detachable base attach/detach event */
EC_HOST_EVENT_MODE_CHANGE = 29,
/* Keyboard recovery combo with hardware reinitialization */
EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT = 30,
/* WoV */
EC_HOST_EVENT_WOV = 31,
/*
* The high bit of the event mask is not used as a host event code. If
* it reads back as set, then the entire event mask should be
* considered invalid by the host. This can happen when reading the
* raw event status via EC_MEMMAP_HOST_EVENTS but the LPC interface is
* not initialized on the EC, or improperly configured on the host.
*/
EC_HOST_EVENT_INVALID = 32
};
/* Host event mask */
#define EC_HOST_EVENT_MASK(event_code) BIT_ULL((event_code) - 1)
/**
* struct ec_lpc_host_args - Arguments at EC_LPC_ADDR_HOST_ARGS
* @flags: The host argument flags.
* @command_version: Command version.
* @data_size: The length of data.
* @checksum: Checksum; sum of command + flags + command_version + data_size +
* all params/response data bytes.
*/
struct ec_lpc_host_args {
uint8_t flags;
uint8_t command_version;
uint8_t data_size;
uint8_t checksum;
} __ec_align4;
/* Flags for ec_lpc_host_args.flags */
/*
* Args are from host. Data area at EC_LPC_ADDR_HOST_PARAM contains command
* params.
*
* If EC gets a command and this flag is not set, this is an old-style command.
* Command version is 0 and params from host are at EC_LPC_ADDR_OLD_PARAM with
* unknown length. EC must respond with an old-style response (that is,
* without setting EC_HOST_ARGS_FLAG_TO_HOST).
*/
#define EC_HOST_ARGS_FLAG_FROM_HOST 0x01
/*
* Args are from EC. Data area at EC_LPC_ADDR_HOST_PARAM contains response.
*
* If EC responds to a command and this flag is not set, this is an old-style
* response. Command version is 0 and response data from EC is at
* EC_LPC_ADDR_OLD_PARAM with unknown length.
*/
#define EC_HOST_ARGS_FLAG_TO_HOST 0x02
/*****************************************************************************/
/*
* Byte codes returned by EC over SPI interface.
*
* These can be used by the AP to debug the EC interface, and to determine
* when the EC is not in a state where it will ever get around to responding
* to the AP.
*
* Example of sequence of bytes read from EC for a current good transfer:
* 1. - - AP asserts chip select (CS#)
* 2. EC_SPI_OLD_READY - AP sends first byte(s) of request
* 3. - - EC starts handling CS# interrupt
* 4. EC_SPI_RECEIVING - AP sends remaining byte(s) of request
* 5. EC_SPI_PROCESSING - EC starts processing request; AP is clocking in
* bytes looking for EC_SPI_FRAME_START
* 6. - - EC finishes processing and sets up response
* 7. EC_SPI_FRAME_START - AP reads frame byte
* 8. (response packet) - AP reads response packet
* 9. EC_SPI_PAST_END - Any additional bytes read by AP
* 10 - - AP deasserts chip select
* 11 - - EC processes CS# interrupt and sets up DMA for
* next request
*
* If the AP is waiting for EC_SPI_FRAME_START and sees any value other than
* the following byte values:
* EC_SPI_OLD_READY
* EC_SPI_RX_READY
* EC_SPI_RECEIVING
* EC_SPI_PROCESSING
*
* Then the EC found an error in the request, or was not ready for the request
* and lost data. The AP should give up waiting for EC_SPI_FRAME_START,
* because the EC is unable to tell when the AP is done sending its request.
*/
/*
* Framing byte which precedes a response packet from the EC. After sending a
* request, the AP will clock in bytes until it sees the framing byte, then
* clock in the response packet.
*/
#define EC_SPI_FRAME_START 0xec
/*
* Padding bytes which are clocked out after the end of a response packet.
*/
#define EC_SPI_PAST_END 0xed
/*
* EC is ready to receive, and has ignored the byte sent by the AP. EC expects
* that the AP will send a valid packet header (starting with
* EC_COMMAND_PROTOCOL_3) in the next 32 bytes.
*/
#define EC_SPI_RX_READY 0xf8
/*
* EC has started receiving the request from the AP, but hasn't started
* processing it yet.
*/
#define EC_SPI_RECEIVING 0xf9
/* EC has received the entire request from the AP and is processing it. */
#define EC_SPI_PROCESSING 0xfa
/*
* EC received bad data from the AP, such as a packet header with an invalid
* length. EC will ignore all data until chip select deasserts.
*/
#define EC_SPI_RX_BAD_DATA 0xfb
/*
* EC received data from the AP before it was ready. That is, the AP asserted
* chip select and started clocking data before the EC was ready to receive it.
* EC will ignore all data until chip select deasserts.
*/
#define EC_SPI_NOT_READY 0xfc
/*
* EC was ready to receive a request from the AP. EC has treated the byte sent
* by the AP as part of a request packet, or (for old-style ECs) is processing
* a fully received packet but is not ready to respond yet.
*/
#define EC_SPI_OLD_READY 0xfd
/*****************************************************************************/
/*
* Protocol version 2 for I2C and SPI send a request this way:
*
* 0 EC_CMD_VERSION0 + (command version)
* 1 Command number
* 2 Length of params = N
* 3..N+2 Params, if any
* N+3 8-bit checksum of bytes 0..N+2
*
* The corresponding response is:
*
* 0 Result code (EC_RES_*)
* 1 Length of params = M
* 2..M+1 Params, if any
* M+2 8-bit checksum of bytes 0..M+1
*/
#define EC_PROTO2_REQUEST_HEADER_BYTES 3
#define EC_PROTO2_REQUEST_TRAILER_BYTES 1
#define EC_PROTO2_REQUEST_OVERHEAD (EC_PROTO2_REQUEST_HEADER_BYTES + \
EC_PROTO2_REQUEST_TRAILER_BYTES)
#define EC_PROTO2_RESPONSE_HEADER_BYTES 2
#define EC_PROTO2_RESPONSE_TRAILER_BYTES 1
#define EC_PROTO2_RESPONSE_OVERHEAD (EC_PROTO2_RESPONSE_HEADER_BYTES + \
EC_PROTO2_RESPONSE_TRAILER_BYTES)
/* Parameter length was limited by the LPC interface */
#define EC_PROTO2_MAX_PARAM_SIZE 0xfc
/* Maximum request and response packet sizes for protocol version 2 */
#define EC_PROTO2_MAX_REQUEST_SIZE (EC_PROTO2_REQUEST_OVERHEAD + \
EC_PROTO2_MAX_PARAM_SIZE)
#define EC_PROTO2_MAX_RESPONSE_SIZE (EC_PROTO2_RESPONSE_OVERHEAD + \
EC_PROTO2_MAX_PARAM_SIZE)
/*****************************************************************************/
/*
* Value written to legacy command port / prefix byte to indicate protocol
* 3+ structs are being used. Usage is bus-dependent.
*/
#define EC_COMMAND_PROTOCOL_3 0xda
#define EC_HOST_REQUEST_VERSION 3
/**
* struct ec_host_request - Version 3 request from host.
* @struct_version: Should be 3. The EC will return EC_RES_INVALID_HEADER if it
* receives a header with a version it doesn't know how to
* parse.
* @checksum: Checksum of request and data; sum of all bytes including checksum
* should total to 0.
* @command: Command to send (EC_CMD_...)
* @command_version: Command version.
* @reserved: Unused byte in current protocol version; set to 0.
* @data_len: Length of data which follows this header.
*/
struct ec_host_request {
uint8_t struct_version;
uint8_t checksum;
uint16_t command;
uint8_t command_version;
uint8_t reserved;
uint16_t data_len;
} __ec_align4;
#define EC_HOST_RESPONSE_VERSION 3
/**
* struct ec_host_response - Version 3 response from EC.
* @struct_version: Struct version (=3).
* @checksum: Checksum of response and data; sum of all bytes including
* checksum should total to 0.
* @result: EC's response to the command (separate from communication failure)
* @data_len: Length of data which follows this header.
* @reserved: Unused bytes in current protocol version; set to 0.
*/
struct ec_host_response {
uint8_t struct_version;
uint8_t checksum;
uint16_t result;
uint16_t data_len;
uint16_t reserved;
} __ec_align4;
/*****************************************************************************/
/*
* Host command protocol V4.
*
* Packets always start with a request or response header. They are followed
* by data_len bytes of data. If the data_crc_present flag is set, the data
* bytes are followed by a CRC-8 of that data, using x^8 + x^2 + x + 1
* polynomial.
*
* Host algorithm when sending a request q:
*
* 101) tries_left=(some value, e.g. 3);
* 102) q.seq_num++
* 103) q.seq_dup=0
* 104) Calculate q.header_crc.
* 105) Send request q to EC.
* 106) Wait for response r. Go to 201 if received or 301 if timeout.
*
* 201) If r.struct_version != 4, go to 301.
* 202) If r.header_crc mismatches calculated CRC for r header, go to 301.
* 203) If r.data_crc_present and r.data_crc mismatches, go to 301.
* 204) If r.seq_num != q.seq_num, go to 301.
* 205) If r.seq_dup == q.seq_dup, return success.
* 207) If r.seq_dup == 1, go to 301.
* 208) Return error.
*
* 301) If --tries_left <= 0, return error.
* 302) If q.seq_dup == 1, go to 105.
* 303) q.seq_dup = 1
* 304) Go to 104.
*
* EC algorithm when receiving a request q.
* EC has response buffer r, error buffer e.
*
* 101) If q.struct_version != 4, set e.result = EC_RES_INVALID_HEADER_VERSION
* and go to 301
* 102) If q.header_crc mismatches calculated CRC, set e.result =
* EC_RES_INVALID_HEADER_CRC and go to 301
* 103) If q.data_crc_present, calculate data CRC. If that mismatches the CRC
* byte at the end of the packet, set e.result = EC_RES_INVALID_DATA_CRC
* and go to 301.
* 104) If q.seq_dup == 0, go to 201.
* 105) If q.seq_num != r.seq_num, go to 201.
* 106) If q.seq_dup == r.seq_dup, go to 205, else go to 203.
*
* 201) Process request q into response r.
* 202) r.seq_num = q.seq_num
* 203) r.seq_dup = q.seq_dup
* 204) Calculate r.header_crc
* 205) If r.data_len > 0 and data is no longer available, set e.result =
* EC_RES_DUP_UNAVAILABLE and go to 301.
* 206) Send response r.
*
* 301) e.seq_num = q.seq_num
* 302) e.seq_dup = q.seq_dup
* 303) Calculate e.header_crc.
* 304) Send error response e.
*/
/* Version 4 request from host */
struct ec_host_request4 {
/*
* bits 0-3: struct_version: Structure version (=4)
* bit 4: is_response: Is response (=0)
* bits 5-6: seq_num: Sequence number
* bit 7: seq_dup: Sequence duplicate flag
*/
uint8_t fields0;
/*
* bits 0-4: command_version: Command version
* bits 5-6: Reserved (set 0, ignore on read)
* bit 7: data_crc_present: Is data CRC present after data
*/
uint8_t fields1;
/* Command code (EC_CMD_*) */
uint16_t command;
/* Length of data which follows this header (not including data CRC) */
uint16_t data_len;
/* Reserved (set 0, ignore on read) */
uint8_t reserved;
/* CRC-8 of above fields, using x^8 + x^2 + x + 1 polynomial */
uint8_t header_crc;
} __ec_align4;
/* Version 4 response from EC */
struct ec_host_response4 {
/*
* bits 0-3: struct_version: Structure version (=4)
* bit 4: is_response: Is response (=1)
* bits 5-6: seq_num: Sequence number
* bit 7: seq_dup: Sequence duplicate flag
*/
uint8_t fields0;
/*
* bits 0-6: Reserved (set 0, ignore on read)
* bit 7: data_crc_present: Is data CRC present after data
*/
uint8_t fields1;
/* Result code (EC_RES_*) */
uint16_t result;
/* Length of data which follows this header (not including data CRC) */
uint16_t data_len;
/* Reserved (set 0, ignore on read) */
uint8_t reserved;
/* CRC-8 of above fields, using x^8 + x^2 + x + 1 polynomial */
uint8_t header_crc;
} __ec_align4;
/* Fields in fields0 byte */
#define EC_PACKET4_0_STRUCT_VERSION_MASK 0x0f
#define EC_PACKET4_0_IS_RESPONSE_MASK 0x10
#define EC_PACKET4_0_SEQ_NUM_SHIFT 5
#define EC_PACKET4_0_SEQ_NUM_MASK 0x60
#define EC_PACKET4_0_SEQ_DUP_MASK 0x80
/* Fields in fields1 byte */
#define EC_PACKET4_1_COMMAND_VERSION_MASK 0x1f
/* (request only) */
#define EC_PACKET4_1_DATA_CRC_PRESENT_MASK 0x80
/*****************************************************************************/
/*
* Notes on commands:
*
* Each command is an 16-bit command value. Commands which take params or
* return response data specify structures for that data. If no structure is
* specified, the command does not input or output data, respectively.
* Parameter/response length is implicit in the structs. Some underlying
* communication protocols (I2C, SPI) may add length or checksum headers, but
* those are implementation-dependent and not defined here.
*
* All commands MUST be #defined to be 4-digit UPPER CASE hex values
* (e.g., 0x00AB, not 0xab) for CONFIG_HOSTCMD_SECTION_SORTED to work.
*/
/*****************************************************************************/
/* General / test commands */
/*
* Get protocol version, used to deal with non-backward compatible protocol
* changes.
*/
#define EC_CMD_PROTO_VERSION 0x0000
/**
* struct ec_response_proto_version - Response to the proto version command.
* @version: The protocol version.
*/
struct ec_response_proto_version {
uint32_t version;
} __ec_align4;
/*
* Hello. This is a simple command to test the EC is responsive to
* commands.
*/
#define EC_CMD_HELLO 0x0001
/**
* struct ec_params_hello - Parameters to the hello command.
* @in_data: Pass anything here.
*/
struct ec_params_hello {
uint32_t in_data;
} __ec_align4;
/**
* struct ec_response_hello - Response to the hello command.
* @out_data: Output will be in_data + 0x01020304.
*/
struct ec_response_hello {
uint32_t out_data;
} __ec_align4;
/* Get version number */
#define EC_CMD_GET_VERSION 0x0002
enum ec_current_image {
EC_IMAGE_UNKNOWN = 0,
EC_IMAGE_RO,
EC_IMAGE_RW
};
/**
* struct ec_response_get_version - Response to the get version command.
* @version_string_ro: Null-terminated RO firmware version string.
* @version_string_rw: Null-terminated RW firmware version string.
* @reserved: Unused bytes; was previously RW-B firmware version string.
* @current_image: One of ec_current_image.
*/
struct ec_response_get_version {
char version_string_ro[32];
char version_string_rw[32];
char reserved[32];
uint32_t current_image;
} __ec_align4;
/* Read test */
#define EC_CMD_READ_TEST 0x0003
/**
* struct ec_params_read_test - Parameters for the read test command.
* @offset: Starting value for read buffer.
* @size: Size to read in bytes.
*/
struct ec_params_read_test {
uint32_t offset;
uint32_t size;
} __ec_align4;
/**
* struct ec_response_read_test - Response to the read test command.
* @data: Data returned by the read test command.
*/
struct ec_response_read_test {
uint32_t data[32];
} __ec_align4;
/*
* Get build information
*
* Response is null-terminated string.
*/
#define EC_CMD_GET_BUILD_INFO 0x0004
/* Get chip info */
#define EC_CMD_GET_CHIP_INFO 0x0005
/**
* struct ec_response_get_chip_info - Response to the get chip info command.
* @vendor: Null-terminated string for chip vendor.
* @name: Null-terminated string for chip name.
* @revision: Null-terminated string for chip mask version.
*/
struct ec_response_get_chip_info {
char vendor[32];
char name[32];
char revision[32];
} __ec_align4;
/* Get board HW version */
#define EC_CMD_GET_BOARD_VERSION 0x0006
/**
* struct ec_response_board_version - Response to the board version command.
* @board_version: A monotonously incrementing number.
*/
struct ec_response_board_version {
uint16_t board_version;
} __ec_align2;
/*
* Read memory-mapped data.
*
* This is an alternate interface to memory-mapped data for bus protocols
* which don't support direct-mapped memory - I2C, SPI, etc.
*
* Response is params.size bytes of data.
*/
#define EC_CMD_READ_MEMMAP 0x0007
/**
* struct ec_params_read_memmap - Parameters for the read memory map command.
* @offset: Offset in memmap (EC_MEMMAP_*).
* @size: Size to read in bytes.
*/
struct ec_params_read_memmap {
uint8_t offset;
uint8_t size;
} __ec_align1;
/* Read versions supported for a command */
#define EC_CMD_GET_CMD_VERSIONS 0x0008
/**
* struct ec_params_get_cmd_versions - Parameters for the get command versions.
* @cmd: Command to check.
*/
struct ec_params_get_cmd_versions {
uint8_t cmd;
} __ec_align1;
/**
* struct ec_params_get_cmd_versions_v1 - Parameters for the get command
* versions (v1)
* @cmd: Command to check.
*/
struct ec_params_get_cmd_versions_v1 {
uint16_t cmd;
} __ec_align2;
/**
* struct ec_response_get_cmd_versions - Response to the get command versions.
* @version_mask: Mask of supported versions; use EC_VER_MASK() to compare with
* a desired version.
*/
struct ec_response_get_cmd_versions {
uint32_t version_mask;
} __ec_align4;
/*
* Check EC communications status (busy). This is needed on i2c/spi but not
* on lpc since it has its own out-of-band busy indicator.
*
* lpc must read the status from the command register. Attempting this on
* lpc will overwrite the args/parameter space and corrupt its data.
*/
#define EC_CMD_GET_COMMS_STATUS 0x0009
/* Avoid using ec_status which is for return values */
enum ec_comms_status {
EC_COMMS_STATUS_PROCESSING = BIT(0),
/* Processing cmd */
};
/**
* struct ec_response_get_comms_status - Response to the get comms status
* command.
* @flags: Mask of enum ec_comms_status.
*/
struct ec_response_get_comms_status {
uint32_t flags;
/* Mask of enum ec_comms_status */
} __ec_align4;
/* Fake a variety of responses, purely for testing purposes. */
#define EC_CMD_TEST_PROTOCOL 0x000A
/* Tell the EC what to send back to us. */
struct ec_params_test_protocol {
uint32_t ec_result;
uint32_t ret_len;
uint8_t buf[32];
} __ec_align4;
/* Here it comes... */
struct ec_response_test_protocol {
uint8_t buf[32];
} __ec_align4;
/* Get protocol information */
#define EC_CMD_GET_PROTOCOL_INFO 0x000B
/* Flags for ec_response_get_protocol_info.flags */
/* EC_RES_IN_PROGRESS may be returned if a command is slow */
#define EC_PROTOCOL_INFO_IN_PROGRESS_SUPPORTED BIT(0)
/**
* struct ec_response_get_protocol_info - Response to the get protocol info.
* @protocol_versions: Bitmask of protocol versions supported (1 << n means
* version n).
* @max_request_packet_size: Maximum request packet size in bytes.
* @max_response_packet_size: Maximum response packet size in bytes.
* @flags: see EC_PROTOCOL_INFO_*
*/
struct ec_response_get_protocol_info {
/* Fields which exist if at least protocol version 3 supported */
uint32_t protocol_versions;
uint16_t max_request_packet_size;
uint16_t max_response_packet_size;
uint32_t flags;
} __ec_align4;
/*****************************************************************************/
/* Get/Set miscellaneous values */
/* The upper byte of .flags tells what to do (nothing means "get") */
#define EC_GSV_SET 0x80000000
/*
* The lower three bytes of .flags identifies the parameter, if that has
* meaning for an individual command.
*/
#define EC_GSV_PARAM_MASK 0x00ffffff
struct ec_params_get_set_value {
uint32_t flags;
uint32_t value;
} __ec_align4;
struct ec_response_get_set_value {
uint32_t flags;
uint32_t value;
} __ec_align4;
/* More than one command can use these structs to get/set parameters. */
#define EC_CMD_GSV_PAUSE_IN_S5 0x000C
/*****************************************************************************/
/* List the features supported by the firmware */
#define EC_CMD_GET_FEATURES 0x000D
/* Supported features */
enum ec_feature_code {
/*
* This image contains a limited set of features. Another image
* in RW partition may support more features.
*/
EC_FEATURE_LIMITED = 0,
/*
* Commands for probing/reading/writing/erasing the flash in the
* EC are present.
*/
EC_FEATURE_FLASH = 1,
/*
* Can control the fan speed directly.
*/
EC_FEATURE_PWM_FAN = 2,
/*
* Can control the intensity of the keyboard backlight.
*/
EC_FEATURE_PWM_KEYB = 3,
/*
* Support Google lightbar, introduced on Pixel.
*/
EC_FEATURE_LIGHTBAR = 4,
/* Control of LEDs */
EC_FEATURE_LED = 5,
/* Exposes an interface to control gyro and sensors.
* The host goes through the EC to access these sensors.
* In addition, the EC may provide composite sensors, like lid angle.
*/
EC_FEATURE_MOTION_SENSE = 6,
/* The keyboard is controlled by the EC */
EC_FEATURE_KEYB = 7,
/* The AP can use part of the EC flash as persistent storage. */
EC_FEATURE_PSTORE = 8,
/* The EC monitors BIOS port 80h, and can return POST codes. */
EC_FEATURE_PORT80 = 9,
/*
* Thermal management: include TMP specific commands.
* Higher level than direct fan control.
*/
EC_FEATURE_THERMAL = 10,
/* Can switch the screen backlight on/off */
EC_FEATURE_BKLIGHT_SWITCH = 11,
/* Can switch the wifi module on/off */
EC_FEATURE_WIFI_SWITCH = 12,
/* Monitor host events, through for example SMI or SCI */
EC_FEATURE_HOST_EVENTS = 13,
/* The EC exposes GPIO commands to control/monitor connected devices. */
EC_FEATURE_GPIO = 14,
/* The EC can send i2c messages to downstream devices. */
EC_FEATURE_I2C = 15,
/* Command to control charger are included */
EC_FEATURE_CHARGER = 16,
/* Simple battery support. */
EC_FEATURE_BATTERY = 17,
/*
* Support Smart battery protocol
* (Common Smart Battery System Interface Specification)
*/
EC_FEATURE_SMART_BATTERY = 18,
/* EC can detect when the host hangs. */
EC_FEATURE_HANG_DETECT = 19,
/* Report power information, for pit only */
EC_FEATURE_PMU = 20,
/* Another Cros EC device is present downstream of this one */
EC_FEATURE_SUB_MCU = 21,
/* Support USB Power delivery (PD) commands */
EC_FEATURE_USB_PD = 22,
/* Control USB multiplexer, for audio through USB port for instance. */
EC_FEATURE_USB_MUX = 23,
/* Motion Sensor code has an internal software FIFO */
EC_FEATURE_MOTION_SENSE_FIFO = 24,
/* Support temporary secure vstore */
EC_FEATURE_VSTORE = 25,
/* EC decides on USB-C SS mux state, muxes configured by host */
EC_FEATURE_USBC_SS_MUX_VIRTUAL = 26,
/* EC has RTC feature that can be controlled by host commands */
EC_FEATURE_RTC = 27,
/* The MCU exposes a Fingerprint sensor */
EC_FEATURE_FINGERPRINT = 28,
/* The MCU exposes a Touchpad */
EC_FEATURE_TOUCHPAD = 29,
/* The MCU has RWSIG task enabled */
EC_FEATURE_RWSIG = 30,
/* EC has device events support */
EC_FEATURE_DEVICE_EVENT = 31,
/* EC supports the unified wake masks for LPC/eSPI systems */
EC_FEATURE_UNIFIED_WAKE_MASKS = 32,
/* EC supports 64-bit host events */
EC_FEATURE_HOST_EVENT64 = 33,
/* EC runs code in RAM (not in place, a.k.a. XIP) */
EC_FEATURE_EXEC_IN_RAM = 34,
/* EC supports CEC commands */
EC_FEATURE_CEC = 35,
/* EC supports tight sensor timestamping. */
EC_FEATURE_MOTION_SENSE_TIGHT_TIMESTAMPS = 36,
/*
* EC supports tablet mode detection aligned to Chrome and allows
* setting of threshold by host command using
* MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE.
*/
EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS = 37,
/* The MCU is a System Companion Processor (SCP). */
EC_FEATURE_SCP = 39,
/* The MCU is an Integrated Sensor Hub */
EC_FEATURE_ISH = 40,
/* New TCPMv2 TYPEC_ prefaced commands supported */
EC_FEATURE_TYPEC_CMD = 41,
/*
* The EC will wait for direction from the AP to enter Type-C alternate
* modes or USB4.
*/
EC_FEATURE_TYPEC_REQUIRE_AP_MODE_ENTRY = 42,
/*
* The EC will wait for an acknowledge from the AP after setting the
* mux.
*/
EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK = 43,
/*
* The EC supports entering and residing in S4.
*/
EC_FEATURE_S4_RESIDENCY = 44,
/*
* The EC supports the AP directing mux sets for the board.
*/
EC_FEATURE_TYPEC_AP_MUX_SET = 45,
/*
* The EC supports the AP composing VDMs for us to send.
*/
EC_FEATURE_TYPEC_AP_VDM_SEND = 46,
/*
* The EC supports system safe mode panic recovery.
*/
EC_FEATURE_SYSTEM_SAFE_MODE = 47,
/*
* The EC will reboot on runtime assertion failures.
*/
EC_FEATURE_ASSERT_REBOOTS = 48,
/*
* The EC image is built with tokenized logging enabled.
*/
EC_FEATURE_TOKENIZED_LOGGING = 49,
/*
* The EC supports triggering an STB dump.
*/
EC_FEATURE_AMD_STB_DUMP = 50,
/*
* The EC supports memory dump commands.
*/
EC_FEATURE_MEMORY_DUMP = 51,
/*
* The EC supports DP2.1 capability
*/
EC_FEATURE_TYPEC_DP2_1 = 52,
/*
* The MCU is System Companion Processor Core 1
*/
EC_FEATURE_SCP_C1 = 53,
/*
* The EC supports UCSI PPM.
*/
EC_FEATURE_UCSI_PPM = 54,
};
#define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
#define EC_FEATURE_MASK_1(event_code) BIT(event_code - 32)
struct ec_response_get_features {
uint32_t flags[2];
} __ec_align4;
/*****************************************************************************/
/* Get the board's SKU ID from EC */
#define EC_CMD_GET_SKU_ID 0x000E
/* Set SKU ID from AP */
#define EC_CMD_SET_SKU_ID 0x000F
struct ec_sku_id_info {
uint32_t sku_id;
} __ec_align4;
/*****************************************************************************/
/* Flash commands */
/* Get flash info */
#define EC_CMD_FLASH_INFO 0x0010
#define EC_VER_FLASH_INFO 2
/**
* struct ec_response_flash_info - Response to the flash info command.
* @flash_size: Usable flash size in bytes.
* @write_block_size: Write block size. Write offset and size must be a
* multiple of this.
* @erase_block_size: Erase block size. Erase offset and size must be a
* multiple of this.
* @protect_block_size: Protection block size. Protection offset and size
* must be a multiple of this.
*
* Version 0 returns these fields.
*/
struct ec_response_flash_info {
uint32_t flash_size;
uint32_t write_block_size;
uint32_t erase_block_size;
uint32_t protect_block_size;
} __ec_align4;
/*
* Flags for version 1+ flash info command
* EC flash erases bits to 0 instead of 1.
*/
#define EC_FLASH_INFO_ERASE_TO_0 BIT(0)
/*
* Flash must be selected for read/write/erase operations to succeed. This may
* be necessary on a chip where write/erase can be corrupted by other board
* activity, or where the chip needs to enable some sort of programming voltage,
* or where the read/write/erase operations require cleanly suspending other
* chip functionality.
*/
#define EC_FLASH_INFO_SELECT_REQUIRED BIT(1)
/**
* struct ec_response_flash_info_1 - Response to the flash info v1 command.
* @flash_size: Usable flash size in bytes.
* @write_block_size: Write block size. Write offset and size must be a
* multiple of this.
* @erase_block_size: Erase block size. Erase offset and size must be a
* multiple of this.
* @protect_block_size: Protection block size. Protection offset and size
* must be a multiple of this.
* @write_ideal_size: Ideal write size in bytes. Writes will be fastest if
* size is exactly this and offset is a multiple of this.
* For example, an EC may have a write buffer which can do
* half-page operations if data is aligned, and a slower
* word-at-a-time write mode.
* @flags: Flags; see EC_FLASH_INFO_*
*
* Version 1 returns the same initial fields as version 0, with additional
* fields following.
*
* gcc anonymous structs don't seem to get along with the __packed directive;
* if they did we'd define the version 0 structure as a sub-structure of this
* one.
*
* Version 2 supports flash banks of different sizes:
* The caller specified the number of banks it has preallocated
* (num_banks_desc)
* The EC returns the number of banks describing the flash memory.
* It adds banks descriptions up to num_banks_desc.
*/
struct ec_response_flash_info_1 {
/* Version 0 fields; see above for description */
uint32_t flash_size;
uint32_t write_block_size;
uint32_t erase_block_size;
uint32_t protect_block_size;
/* Version 1 adds these fields: */
uint32_t write_ideal_size;
uint32_t flags;
} __ec_align4;
struct ec_params_flash_info_2 {
/* Number of banks to describe */
uint16_t num_banks_desc;
/* Reserved; set 0; ignore on read */
uint8_t reserved[2];
} __ec_align4;
struct ec_flash_bank {
/* Number of sector is in this bank. */
uint16_t count;
/* Size in power of 2 of each sector (8 --> 256 bytes) */
uint8_t size_exp;
/* Minimal write size for the sectors in this bank */
uint8_t write_size_exp;
/* Erase size for the sectors in this bank */
uint8_t erase_size_exp;
/* Size for write protection, usually identical to erase size. */
uint8_t protect_size_exp;
/* Reserved; set 0; ignore on read */
uint8_t reserved[2];
};
struct ec_response_flash_info_2 {
/* Total flash in the EC. */
uint32_t flash_size;
/* Flags; see EC_FLASH_INFO_* */
uint32_t flags;
/* Maximum size to use to send data to write to the EC. */
uint32_t write_ideal_size;
/* Number of banks present in the EC. */
uint16_t num_banks_total;
/* Number of banks described in banks array. */
uint16_t num_banks_desc;
struct ec_flash_bank banks[];
} __ec_align4;
/*
* Read flash
*
* Response is params.size bytes of data.
*/
#define EC_CMD_FLASH_READ 0x0011
/**
* struct ec_params_flash_read - Parameters for the flash read command.
* @offset: Byte offset to read.
* @size: Size to read in bytes.
*/
struct ec_params_flash_read {
uint32_t offset;
uint32_t size;
} __ec_align4;
/* Write flash */
#define EC_CMD_FLASH_WRITE 0x0012
#define EC_VER_FLASH_WRITE 1
/* Version 0 of the flash command supported only 64 bytes of data */
#define EC_FLASH_WRITE_VER0_SIZE 64
/**
* struct ec_params_flash_write - Parameters for the flash write command.
* @offset: Byte offset to write.
* @size: Size to write in bytes.
*/
struct ec_params_flash_write {
uint32_t offset;
uint32_t size;
/* Followed by data to write */
} __ec_align4;
/* Erase flash */
#define EC_CMD_FLASH_ERASE 0x0013
/**
* struct ec_params_flash_erase - Parameters for the flash erase command, v0.
* @offset: Byte offset to erase.
* @size: Size to erase in bytes.
*/
struct ec_params_flash_erase {
uint32_t offset;
uint32_t size;
} __ec_align4;
/*
* v1 add async erase:
* subcommands can returns:
* EC_RES_SUCCESS : erased (see ERASE_SECTOR_ASYNC case below).
* EC_RES_INVALID_PARAM : offset/size are not aligned on a erase boundary.
* EC_RES_ERROR : other errors.
* EC_RES_BUSY : an existing erase operation is in progress.
* EC_RES_ACCESS_DENIED: Trying to erase running image.
*
* When ERASE_SECTOR_ASYNC returns EC_RES_SUCCESS, the operation is just
* properly queued. The user must call ERASE_GET_RESULT subcommand to get
* the proper result.
* When ERASE_GET_RESULT returns EC_RES_BUSY, the caller must wait and send
* ERASE_GET_RESULT again to get the result of ERASE_SECTOR_ASYNC.
* ERASE_GET_RESULT command may timeout on EC where flash access is not
* permitted while erasing. (For instance, STM32F4).
*/
enum ec_flash_erase_cmd {
FLASH_ERASE_SECTOR,
/* Erase and wait for result */
FLASH_ERASE_SECTOR_ASYNC,
/* Erase and return immediately. */
FLASH_ERASE_GET_RESULT,
/* Ask for last erase result */
};
/**
* struct ec_params_flash_erase_v1 - Parameters for the flash erase command, v1.
* @cmd: One of ec_flash_erase_cmd.
* @reserved: Pad byte; currently always contains 0.
* @flag: No flags defined yet; set to 0.
* @params: Same as v0 parameters.
*/
struct ec_params_flash_erase_v1 {
uint8_t cmd;
uint8_t reserved;
uint16_t flag;
struct ec_params_flash_erase params;
} __ec_align4;
/*
* Get/set flash protection.
*
* If mask!=0, sets/clear the requested bits of flags. Depending on the
* firmware write protect GPIO, not all flags will take effect immediately;
* some flags require a subsequent hard reset to take effect. Check the
* returned flags bits to see what actually happened.
*
* If mask=0, simply returns the current flags state.
*/
#define EC_CMD_FLASH_PROTECT 0x0015
#define EC_VER_FLASH_PROTECT 1
/* Command version 1 */
/* Flags for flash protection */
/* RO flash code protected when the EC boots */
#define EC_FLASH_PROTECT_RO_AT_BOOT BIT(0)
/*
* RO flash code protected now. If this bit is set, at-boot status cannot
* be changed.
*/
#define EC_FLASH_PROTECT_RO_NOW BIT(1)
/* Entire flash code protected now, until reboot. */
#define EC_FLASH_PROTECT_ALL_NOW BIT(2)
/* Flash write protect GPIO is asserted now */
#define EC_FLASH_PROTECT_GPIO_ASSERTED BIT(3)
/* Error - at least one bank of flash is stuck locked, and cannot be unlocked */
#define EC_FLASH_PROTECT_ERROR_STUCK BIT(4)
/*
* Error - flash protection is in inconsistent state. At least one bank of
* flash which should be protected is not protected. Usually fixed by
* re-requesting the desired flags, or by a hard reset if that fails.
*/
#define EC_FLASH_PROTECT_ERROR_INCONSISTENT BIT(5)
/* Entire flash code protected when the EC boots */
#define EC_FLASH_PROTECT_ALL_AT_BOOT BIT(6)
/* RW flash code protected when the EC boots */
#define EC_FLASH_PROTECT_RW_AT_BOOT BIT(7)
/* RW flash code protected now. */
#define EC_FLASH_PROTECT_RW_NOW BIT(8)
/* Rollback information flash region protected when the EC boots */
#define EC_FLASH_PROTECT_ROLLBACK_AT_BOOT BIT(9)
/* Rollback information flash region protected now */
#define EC_FLASH_PROTECT_ROLLBACK_NOW BIT(10)
/**
* struct ec_params_flash_protect - Parameters for the flash protect command.
* @mask: Bits in flags to apply.
* @flags: New flags to apply.
*/
struct ec_params_flash_protect {
uint32_t mask;
uint32_t flags;
} __ec_align4;
/**
* struct ec_response_flash_protect - Response to the flash protect command.
* @flags: Current value of flash protect flags.
* @valid_flags: Flags which are valid on this platform. This allows the
* caller to distinguish between flags which aren't set vs. flags
* which can't be set on this platform.
* @writable_flags: Flags which can be changed given the current protection
* state.
*/
struct ec_response_flash_protect {
uint32_t flags;
uint32_t valid_flags;
uint32_t writable_flags;
} __ec_align4;
/*
* Note: commands 0x14 - 0x19 version 0 were old commands to get/set flash
* write protect. These commands may be reused with version > 0.
*/
/* Get the region offset/size */
#define EC_CMD_FLASH_REGION_INFO 0x0016
#define EC_VER_FLASH_REGION_INFO 1
enum ec_flash_region {
/* Region which holds read-only EC image */
EC_FLASH_REGION_RO = 0,
/*
* Region which holds active RW image. 'Active' is different from
* 'running'. Active means 'scheduled-to-run'. Since RO image always
* scheduled to run, active/non-active applies only to RW images (for
* the same reason 'update' applies only to RW images. It's a state of
* an image on a flash. Running image can be RO, RW_A, RW_B but active
* image can only be RW_A or RW_B. In recovery mode, an active RW image
* doesn't enter 'running' state but it's still active on a flash.
*/
EC_FLASH_REGION_ACTIVE,
/*
* Region which should be write-protected in the factory (a superset of
* EC_FLASH_REGION_RO)
*/
EC_FLASH_REGION_WP_RO,
/* Region which holds updatable (non-active) RW image */
EC_FLASH_REGION_UPDATE,
/* Number of regions */
EC_FLASH_REGION_COUNT,
};
/*
* 'RW' is vague if there are multiple RW images; we mean the active one,
* so the old constant is deprecated.
*/
#define EC_FLASH_REGION_RW EC_FLASH_REGION_ACTIVE
/**
* struct ec_params_flash_region_info - Parameters for the flash region info
* command.
* @region: Flash region; see EC_FLASH_REGION_*
*/
struct ec_params_flash_region_info {
uint32_t region;
} __ec_align4;
struct ec_response_flash_region_info {
uint32_t offset;
uint32_t size;
} __ec_align4;
/* Read/write VbNvContext */
#define EC_CMD_VBNV_CONTEXT 0x0017
#define EC_VER_VBNV_CONTEXT 1
#define EC_VBNV_BLOCK_SIZE 16
enum ec_vbnvcontext_op {
EC_VBNV_CONTEXT_OP_READ,
EC_VBNV_CONTEXT_OP_WRITE,
};
struct ec_params_vbnvcontext {
uint32_t op;
uint8_t block[EC_VBNV_BLOCK_SIZE];
} __ec_align4;
struct ec_response_vbnvcontext {
uint8_t block[EC_VBNV_BLOCK_SIZE];
} __ec_align4;
/* Get SPI flash information */
#define EC_CMD_FLASH_SPI_INFO 0x0018
struct ec_response_flash_spi_info {
/* JEDEC info from command 0x9F (manufacturer, memory type, size) */
uint8_t jedec[3];
/* Pad byte; currently always contains 0 */
uint8_t reserved0;
/* Manufacturer / device ID from command 0x90 */
uint8_t mfr_dev_id[2];
/* Status registers from command 0x05 and 0x35 */
uint8_t sr1, sr2;
} __ec_align1;
/* Select flash during flash operations */
#define EC_CMD_FLASH_SELECT 0x0019
/**
* struct ec_params_flash_select - Parameters for the flash select command.
* @select: 1 to select flash, 0 to deselect flash
*/
struct ec_params_flash_select {
uint8_t select;
} __ec_align4;
/*****************************************************************************/
/* PWM commands */
/* Get fan target RPM */
#define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x0020
struct ec_response_pwm_get_fan_rpm {
uint32_t rpm;
} __ec_align4;
/* Set target fan RPM */
#define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x0021
/* Version 0 of input params */
struct ec_params_pwm_set_fan_target_rpm_v0 {
uint32_t rpm;
} __ec_align4;
/* Version 1 of input params */
struct ec_params_pwm_set_fan_target_rpm_v1 {
uint32_t rpm;
uint8_t fan_idx;
} __ec_align_size1;
/* Get keyboard backlight */
/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
#define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x0022
struct ec_response_pwm_get_keyboard_backlight {
uint8_t percent;
uint8_t enabled;
} __ec_align1;
/* Set keyboard backlight */
/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
#define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x0023
struct ec_params_pwm_set_keyboard_backlight {
uint8_t percent;
} __ec_align1;
/* Set target fan PWM duty cycle */
#define EC_CMD_PWM_SET_FAN_DUTY 0x0024
/* Version 0 of input params */
struct ec_params_pwm_set_fan_duty_v0 {
uint32_t percent;
} __ec_align4;
/* Version 1 of input params */
struct ec_params_pwm_set_fan_duty_v1 {
uint32_t percent;
uint8_t fan_idx;
} __ec_align_size1;
#define EC_CMD_PWM_SET_DUTY 0x0025
/* 16 bit duty cycle, 0xffff = 100% */
#define EC_PWM_MAX_DUTY 0xffff
enum ec_pwm_type {
/* All types, indexed by board-specific enum pwm_channel */
EC_PWM_TYPE_GENERIC = 0,
/* Keyboard backlight */
EC_PWM_TYPE_KB_LIGHT,
/* Display backlight */
EC_PWM_TYPE_DISPLAY_LIGHT,
EC_PWM_TYPE_COUNT,
};
struct ec_params_pwm_set_duty {
uint16_t duty;
/* Duty cycle, EC_PWM_MAX_DUTY = 100% */
uint8_t pwm_type;
/* ec_pwm_type */
uint8_t index;
/* Type-specific index, or 0 if unique */
} __ec_align4;
#define EC_CMD_PWM_GET_DUTY 0x0026
struct ec_params_pwm_get_duty {
uint8_t pwm_type;
/* ec_pwm_type */
uint8_t index;
/* Type-specific index, or 0 if unique */
} __ec_align1;
struct ec_response_pwm_get_duty {
uint16_t duty;
/* Duty cycle, EC_PWM_MAX_DUTY = 100% */
} __ec_align2;
/*****************************************************************************/
/*
* Lightbar commands. This looks worse than it is. Since we only use one HOST
* command to say "talk to the lightbar", we put the "and tell it to do X" part
* into a subcommand. We'll make separate structs for subcommands with
* different input args, so that we know how much to expect.
*/
#define EC_CMD_LIGHTBAR_CMD 0x0028
struct rgb_s {
uint8_t r, g, b;
} __ec_todo_unpacked;
#define LB_BATTERY_LEVELS 4
/*
* List of tweakable parameters. NOTE: It's __packed so it can be sent in a
* host command, but the alignment is the same regardless. Keep it that way.
*/
struct lightbar_params_v0 {
/* Timing */
int32_t google_ramp_up;
int32_t google_ramp_down;
int32_t s3s0_ramp_up;
int32_t s0_tick_delay[2];
/* AC=0/1 */
int32_t s0a_tick_delay[2];
/* AC=0/1 */
int32_t s0s3_ramp_down;
int32_t s3_sleep_for;
int32_t s3_ramp_up;
int32_t s3_ramp_down;
/* Oscillation */
uint8_t new_s0;
uint8_t osc_min[2];
/* AC=0/1 */
uint8_t osc_max[2];
/* AC=0/1 */
uint8_t w_ofs[2];
/* AC=0/1 */
/* Brightness limits based on the backlight and AC. */
uint8_t bright_bl_off_fixed[2];
/* AC=0/1 */
uint8_t bright_bl_on_min[2];
/* AC=0/1 */
uint8_t bright_bl_on_max[2];
/* AC=0/1 */
/* Battery level thresholds */
uint8_t battery_threshold[LB_BATTERY_LEVELS - 1];
/* Map [AC][battery_level] to color index */
uint8_t s0_idx[2][LB_BATTERY_LEVELS];
/* AP is running */
uint8_t s3_idx[2][LB_BATTERY_LEVELS];
/* AP is sleeping */
/* Color palette */
struct rgb_s color[8];
/* 0-3 are Google colors */
} __ec_todo_packed;
struct lightbar_params_v1 {
/* Timing */
int32_t google_ramp_up;
int32_t google_ramp_down;
int32_t s3s0_ramp_up;
int32_t s0_tick_delay[2];
/* AC=0/1 */
int32_t s0a_tick_delay[2];
/* AC=0/1 */
int32_t s0s3_ramp_down;
int32_t s3_sleep_for;
int32_t s3_ramp_up;
int32_t s3_ramp_down;
int32_t s5_ramp_up;
int32_t s5_ramp_down;
int32_t tap_tick_delay;
int32_t tap_gate_delay;
int32_t tap_display_time;
/* Tap-for-battery params */
uint8_t tap_pct_red;
uint8_t tap_pct_green;
uint8_t tap_seg_min_on;
uint8_t tap_seg_max_on;
uint8_t tap_seg_osc;
uint8_t tap_idx[3];
/* Oscillation */
uint8_t osc_min[2];
/* AC=0/1 */
uint8_t osc_max[2];
/* AC=0/1 */
uint8_t w_ofs[2];
/* AC=0/1 */
/* Brightness limits based on the backlight and AC. */
uint8_t bright_bl_off_fixed[2];
/* AC=0/1 */
uint8_t bright_bl_on_min[2];
/* AC=0/1 */
uint8_t bright_bl_on_max[2];
/* AC=0/1 */
/* Battery level thresholds */
uint8_t battery_threshold[LB_BATTERY_LEVELS - 1];
/* Map [AC][battery_level] to color index */
uint8_t s0_idx[2][LB_BATTERY_LEVELS];
/* AP is running */
uint8_t s3_idx[2][LB_BATTERY_LEVELS];
/* AP is sleeping */
/* s5: single color pulse on inhibited power-up */
uint8_t s5_idx;
/* Color palette */
struct rgb_s color[8];
/* 0-3 are Google colors */
} __ec_todo_packed;
/* Lightbar command params v2
* crbug.com/467716
*
* lightbar_parms_v1 was too big for i2c, therefore in v2, we split them up by
* logical groups to make it more manageable ( < 120 bytes).
*
* NOTE: Each of these groups must be less than 120 bytes.
*/
struct lightbar_params_v2_timing {
/* Timing */
int32_t google_ramp_up;
int32_t google_ramp_down;
int32_t s3s0_ramp_up;
int32_t s0_tick_delay[2];
/* AC=0/1 */
int32_t s0a_tick_delay[2];
/* AC=0/1 */
int32_t s0s3_ramp_down;
int32_t s3_sleep_for;
int32_t s3_ramp_up;
int32_t s3_ramp_down;
int32_t s5_ramp_up;
int32_t s5_ramp_down;
int32_t tap_tick_delay;
int32_t tap_gate_delay;
int32_t tap_display_time;
} __ec_todo_packed;
struct lightbar_params_v2_tap {
/* Tap-for-battery params */
uint8_t tap_pct_red;
uint8_t tap_pct_green;
uint8_t tap_seg_min_on;
uint8_t tap_seg_max_on;
uint8_t tap_seg_osc;
uint8_t tap_idx[3];
} __ec_todo_packed;
struct lightbar_params_v2_oscillation {
/* Oscillation */
uint8_t osc_min[2];
/* AC=0/1 */
uint8_t osc_max[2];
/* AC=0/1 */
uint8_t w_ofs[2];
/* AC=0/1 */
} __ec_todo_packed;
struct lightbar_params_v2_brightness {
/* Brightness limits based on the backlight and AC. */
uint8_t bright_bl_off_fixed[2];
/* AC=0/1 */
uint8_t bright_bl_on_min[2];
/* AC=0/1 */
uint8_t bright_bl_on_max[2];
/* AC=0/1 */
} __ec_todo_packed;
struct lightbar_params_v2_thresholds {
/* Battery level thresholds */
uint8_t battery_threshold[LB_BATTERY_LEVELS - 1];
} __ec_todo_packed;
struct lightbar_params_v2_colors {
/* Map [AC][battery_level] to color index */
uint8_t s0_idx[2][LB_BATTERY_LEVELS];
/* AP is running */
uint8_t s3_idx[2][LB_BATTERY_LEVELS];
/* AP is sleeping */
/* s5: single color pulse on inhibited power-up */
uint8_t s5_idx;
/* Color palette */
struct rgb_s color[8];
/* 0-3 are Google colors */
} __ec_todo_packed;
/* Lightbar program. */
#define EC_LB_PROG_LEN 192
struct lightbar_program {
uint8_t size;
uint8_t data[EC_LB_PROG_LEN];
} __ec_todo_unpacked;
struct ec_params_lightbar {
uint8_t cmd;
/* Command (see enum lightbar_command) */
union {
/*
* The following commands have no args:
*
--> --------------------
--> maximum size reached
--> --------------------