Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 2350 insertions, 0 deletions

diff --git a/kernel/include/linux/mfd/cros_ec_commands.h b/kernel/include/linux/mfd/cros_ec_commands.h
new file mode 100644
index 000000000..a49cd41fe
--- /dev/null
+++ b/kernel/include/linux/mfd/cros_ec_commands.h
@@ -0,0 +1,2350 @@
+/*
+ * Host communication command constants for ChromeOS EC
+ *
+ * Copyright (C) 2012 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ * The ChromeOS EC multi function device is used to mux all the requests
+ * to the EC device for its multiple features: keyboard controller,
+ * battery charging and regulator control, firmware update.
+ *
+ * NOTE: This file is copied verbatim from the ChromeOS EC Open Source
+ * project in an attempt to make future updates easy to make.
+ */
+
+#ifndef __CROS_EC_COMMANDS_H
+#define __CROS_EC_COMMANDS_H
+
+/*
+ * 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) (1UL << (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. */
+#define EC_HOST_CMD_REGION0    0x800
+#define EC_HOST_CMD_REGION1    0x880
+#define EC_HOST_CMD_REGION_SIZE 0x80
+
+/* EC command register bit functions */
+#define EC_LPC_CMDR_DATA	(1 << 0)  /* Data ready for host to read */
+#define EC_LPC_CMDR_PENDING	(1 << 1)  /* Write pending to EC */
+#define EC_LPC_CMDR_BUSY	(1 << 2)  /* EC is busy processing a command */
+#define EC_LPC_CMDR_CMD		(1 << 3)  /* Last host write was a command */
+#define EC_LPC_CMDR_ACPI_BRST	(1 << 4)  /* Burst mode (not used) */
+#define EC_LPC_CMDR_SCI		(1 << 5)  /* SCI event is pending */
+#define EC_LPC_CMDR_SMI		(1 << 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 /* 32 bits */
+/* Reserve 0x38 - 0x3f for additional host event-related stuff */
+/* Battery values are all 32 bits */
+#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, defined below */
+#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 /* Accelerometer data 0x92 - 0x9f */
+#define EC_MEMMAP_GYRO_DATA        0xa0 /* Gyroscope data 0xa0 - 0xa5 */
+/* Unused 0xa6 - 0xfe (remember, 0xff is NOT part of the memmap region) */
+
+
+/* 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        (1 << 4)
+#define EC_MEMMAP_ACC_STATUS_PRESENCE_BIT    (1 << 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
+
+/* 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 */
+
+/*
+ * 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.
+ */
+#ifndef __ACPI__
+
+/*
+ * Define __packed if someone hasn't beat us to it.  Linux kernel style
+ * checking prefers __packed over __attribute__((packed)).
+ */
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+
+/* 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.  Unsupported by Chrome EC, so this bit is never set */
+#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 */
+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 */
+};
+
+/*
+ * 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,
+	EC_HOST_EVENT_THERMAL_OVERLOAD = 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,
+
+	/*
+	 * 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) (1UL << ((event_code) - 1))
+
+/* Arguments at EC_LPC_ADDR_HOST_ARGS */
+struct ec_lpc_host_args {
+	uint8_t flags;
+	uint8_t command_version;
+	uint8_t data_size;
+	/*
+	 * Checksum; sum of command + flags + command_version + data_size +
+	 * all params/response data bytes.
+	 */
+	uint8_t checksum;
+} __packed;
+
+/* 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,
+ * withouth 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
+
+/* Version 3 request from host */
+struct ec_host_request {
+	/* Struct version (=3)
+	 *
+	 * EC will return EC_RES_INVALID_HEADER if it receives a header with a
+	 * version it doesn't know how to parse.
+	 */
+	uint8_t struct_version;
+
+	/*
+	 * Checksum of request and data; sum of all bytes including checksum
+	 * should total to 0.
+	 */
+	uint8_t checksum;
+
+	/* Command code */
+	uint16_t command;
+
+	/* Command version */
+	uint8_t command_version;
+
+	/* Unused byte in current protocol version; set to 0 */
+	uint8_t reserved;
+
+	/* Length of data which follows this header */
+	uint16_t data_len;
+} __packed;
+
+#define EC_HOST_RESPONSE_VERSION 3
+
+/* Version 3 response from EC */
+struct ec_host_response {
+	/* Struct version (=3) */
+	uint8_t struct_version;
+
+	/*
+	 * Checksum of response and data; sum of all bytes including checksum
+	 * should total to 0.
+	 */
+	uint8_t checksum;
+
+	/* Result code (EC_RES_*) */
+	uint16_t result;
+
+	/* Length of data which follows this header */
+	uint16_t data_len;
+
+	/* Unused bytes in current protocol version; set to 0 */
+	uint16_t reserved;
+} __packed;
+
+/*****************************************************************************/
+/*
+ * Notes on commands:
+ *
+ * Each command is an 8-byte command value.  Commands which take params or
+ * return response data specify structs for that data.  If no struct 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.
+ */
+
+/*****************************************************************************/
+/* General / test commands */
+
+/*
+ * Get protocol version, used to deal with non-backward compatible protocol
+ * changes.
+ */
+#define EC_CMD_PROTO_VERSION 0x00
+
+struct ec_response_proto_version {
+	uint32_t version;
+} __packed;
+
+/*
+ * Hello.  This is a simple command to test the EC is responsive to
+ * commands.
+ */
+#define EC_CMD_HELLO 0x01
+
+struct ec_params_hello {
+	uint32_t in_data;  /* Pass anything here */
+} __packed;
+
+struct ec_response_hello {
+	uint32_t out_data;  /* Output will be in_data + 0x01020304 */
+} __packed;
+
+/* Get version number */
+#define EC_CMD_GET_VERSION 0x02
+
+enum ec_current_image {
+	EC_IMAGE_UNKNOWN = 0,
+	EC_IMAGE_RO,
+	EC_IMAGE_RW
+};
+
+struct ec_response_get_version {
+	/* Null-terminated version strings for RO, RW */
+	char version_string_ro[32];
+	char version_string_rw[32];
+	char reserved[32];       /* Was previously RW-B string */
+	uint32_t current_image;  /* One of ec_current_image */
+} __packed;
+
+/* Read test */
+#define EC_CMD_READ_TEST 0x03
+
+struct ec_params_read_test {
+	uint32_t offset;   /* Starting value for read buffer */
+	uint32_t size;     /* Size to read in bytes */
+} __packed;
+
+struct ec_response_read_test {
+	uint32_t data[32];
+} __packed;
+
+/*
+ * Get build information
+ *
+ * Response is null-terminated string.
+ */
+#define EC_CMD_GET_BUILD_INFO 0x04
+
+/* Get chip info */
+#define EC_CMD_GET_CHIP_INFO 0x05
+
+struct ec_response_get_chip_info {
+	/* Null-terminated strings */
+	char vendor[32];
+	char name[32];
+	char revision[32];  /* Mask version */
+} __packed;
+
+/* Get board HW version */
+#define EC_CMD_GET_BOARD_VERSION 0x06
+
+struct ec_response_board_version {
+	uint16_t board_version;  /* A monotonously incrementing number. */
+} __packed;
+
+/*
+ * 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 0x07
+
+struct ec_params_read_memmap {
+	uint8_t offset;   /* Offset in memmap (EC_MEMMAP_*) */
+	uint8_t size;     /* Size to read in bytes */
+} __packed;
+
+/* Read versions supported for a command */
+#define EC_CMD_GET_CMD_VERSIONS 0x08
+
+struct ec_params_get_cmd_versions {
+	uint8_t cmd;      /* Command to check */
+} __packed;
+
+struct ec_response_get_cmd_versions {
+	/*
+	 * Mask of supported versions; use EC_VER_MASK() to compare with a
+	 * desired version.
+	 */
+	uint32_t version_mask;
+} __packed;
+
+/*
+ * Check EC communcations 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		0x09
+
+/* Avoid using ec_status which is for return values */
+enum ec_comms_status {
+	EC_COMMS_STATUS_PROCESSING	= 1 << 0,	/* Processing cmd */
+};
+
+struct ec_response_get_comms_status {
+	uint32_t flags;		/* Mask of enum ec_comms_status */
+} __packed;
+
+/* Fake a variety of responses, purely for testing purposes. */
+#define EC_CMD_TEST_PROTOCOL		0x0a
+
+/* 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];
+} __packed;
+
+/* Here it comes... */
+struct ec_response_test_protocol {
+	uint8_t buf[32];
+} __packed;
+
+/* Get prococol information */
+#define EC_CMD_GET_PROTOCOL_INFO	0x0b
+
+/* 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 (1 << 0)
+
+struct ec_response_get_protocol_info {
+	/* Fields which exist if at least protocol version 3 supported */
+
+	/* Bitmask of protocol versions supported (1 << n means version n)*/
+	uint32_t protocol_versions;
+
+	/* Maximum request packet size, in bytes */
+	uint16_t max_request_packet_size;
+
+	/* Maximum response packet size, in bytes */
+	uint16_t max_response_packet_size;
+
+	/* Flags; see EC_PROTOCOL_INFO_* */
+	uint32_t flags;
+} __packed;
+
+
+/*****************************************************************************/
+/* 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;
+} __packed;
+
+struct ec_response_get_set_value {
+	uint32_t flags;
+	uint32_t value;
+} __packed;
+
+/* More than one command can use these structs to get/set paramters. */
+#define EC_CMD_GSV_PAUSE_IN_S5	0x0c
+
+
+/*****************************************************************************/
+/* Flash commands */
+
+/* Get flash info */
+#define EC_CMD_FLASH_INFO 0x10
+
+/* Version 0 returns these fields */
+struct ec_response_flash_info {
+	/* Usable flash size, in bytes */
+	uint32_t flash_size;
+	/*
+	 * Write block size.  Write offset and size must be a multiple
+	 * of this.
+	 */
+	uint32_t write_block_size;
+	/*
+	 * Erase block size.  Erase offset and size must be a multiple
+	 * of this.
+	 */
+	uint32_t erase_block_size;
+	/*
+	 * Protection block size.  Protection offset and size must be a
+	 * multiple of this.
+	 */
+	uint32_t protect_block_size;
+} __packed;
+
+/* Flags for version 1+ flash info command */
+/* EC flash erases bits to 0 instead of 1 */
+#define EC_FLASH_INFO_ERASE_TO_0 (1 << 0)
+
+/*
+ * 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 struct as a sub-struct of this one.
+ */
+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: */
+	/*
+	 * 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.
+	 */
+	uint32_t write_ideal_size;
+
+	/* Flags; see EC_FLASH_INFO_* */
+	uint32_t flags;
+} __packed;
+
+/*
+ * Read flash
+ *
+ * Response is params.size bytes of data.
+ */
+#define EC_CMD_FLASH_READ 0x11
+
+struct ec_params_flash_read {
+	uint32_t offset;   /* Byte offset to read */
+	uint32_t size;     /* Size to read in bytes */
+} __packed;
+
+/* Write flash */
+#define EC_CMD_FLASH_WRITE 0x12
+#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 {
+	uint32_t offset;   /* Byte offset to write */
+	uint32_t size;     /* Size to write in bytes */
+	/* Followed by data to write */
+} __packed;
+
+/* Erase flash */
+#define EC_CMD_FLASH_ERASE 0x13
+
+struct ec_params_flash_erase {
+	uint32_t offset;   /* Byte offset to erase */
+	uint32_t size;     /* Size to erase in bytes */
+} __packed;
+
+/*
+ * 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 0x15
+#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         (1 << 0)
+/*
+ * RO flash code protected now.  If this bit is set, at-boot status cannot
+ * be changed.
+ */
+#define EC_FLASH_PROTECT_RO_NOW             (1 << 1)
+/* Entire flash code protected now, until reboot. */
+#define EC_FLASH_PROTECT_ALL_NOW            (1 << 2)
+/* Flash write protect GPIO is asserted now */
+#define EC_FLASH_PROTECT_GPIO_ASSERTED      (1 << 3)
+/* Error - at least one bank of flash is stuck locked, and cannot be unlocked */
+#define EC_FLASH_PROTECT_ERROR_STUCK        (1 << 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 (1 << 5)
+/* Entile flash code protected when the EC boots */
+#define EC_FLASH_PROTECT_ALL_AT_BOOT        (1 << 6)
+
+struct ec_params_flash_protect {
+	uint32_t mask;   /* Bits in flags to apply */
+	uint32_t flags;  /* New flags to apply */
+} __packed;
+
+struct ec_response_flash_protect {
+	/* Current value of flash protect flags */
+	uint32_t 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.
+	 */
+	uint32_t valid_flags;
+	/* Flags which can be changed given the current protection state */
+	uint32_t writable_flags;
+} __packed;
+
+/*
+ * 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 0x16
+#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 rewritable EC image */
+	EC_FLASH_REGION_RW,
+	/*
+	 * Region which should be write-protected in the factory (a superset of
+	 * EC_FLASH_REGION_RO)
+	 */
+	EC_FLASH_REGION_WP_RO,
+	/* Number of regions */
+	EC_FLASH_REGION_COUNT,
+};
+
+struct ec_params_flash_region_info {
+	uint32_t region;  /* enum ec_flash_region */
+} __packed;
+
+struct ec_response_flash_region_info {
+	uint32_t offset;
+	uint32_t size;
+} __packed;
+
+/* Read/write VbNvContext */
+#define EC_CMD_VBNV_CONTEXT 0x17
+#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];
+} __packed;
+
+struct ec_response_vbnvcontext {
+	uint8_t block[EC_VBNV_BLOCK_SIZE];
+} __packed;
+
+/*****************************************************************************/
+/* PWM commands */
+
+/* Get fan target RPM */
+#define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x20
+
+struct ec_response_pwm_get_fan_rpm {
+	uint32_t rpm;
+} __packed;
+
+/* Set target fan RPM */
+#define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x21
+
+struct ec_params_pwm_set_fan_target_rpm {
+	uint32_t rpm;
+} __packed;
+
+/* Get keyboard backlight */
+#define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x22
+
+struct ec_response_pwm_get_keyboard_backlight {
+	uint8_t percent;
+	uint8_t enabled;
+} __packed;
+
+/* Set keyboard backlight */
+#define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x23
+
+struct ec_params_pwm_set_keyboard_backlight {
+	uint8_t percent;
+} __packed;
+
+/* Set target fan PWM duty cycle */
+#define EC_CMD_PWM_SET_FAN_DUTY 0x24
+
+struct ec_params_pwm_set_fan_duty {
+	uint32_t percent;
+} __packed;
+
+/*****************************************************************************/
+/*
+ * 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 0x28
+
+struct rgb_s {
+	uint8_t r, g, b;
+};
+
+#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 {
+	/* 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 */
+} __packed;
+
+struct ec_params_lightbar {
+	uint8_t cmd;		      /* Command (see enum lightbar_command) */
+	union {
+		struct {
+			/* no args */
+		} dump, off, on, init, get_seq, get_params, version;
+
+		struct num {
+			uint8_t num;
+		} brightness, seq, demo;
+
+		struct reg {
+			uint8_t ctrl, reg, value;
+		} reg;
+
+		struct rgb {
+			uint8_t led, red, green, blue;
+		} rgb;
+
+		struct lightbar_params set_params;
+	};
+} __packed;
+
+struct ec_response_lightbar {
+	union {
+		struct dump {
+			struct {
+				uint8_t reg;
+				uint8_t ic0;
+				uint8_t ic1;
+			} vals[23];
+		} dump;
+
+		struct get_seq {
+			uint8_t num;
+		} get_seq;
+
+		struct lightbar_params get_params;
+
+		struct version {
+			uint32_t num;
+			uint32_t flags;
+		} version;
+
+		struct {
+			/* no return params */
+		} off, on, init, brightness, seq, reg, rgb, demo, set_params;
+	};
+} __packed;
+
+/* Lightbar commands */
+enum lightbar_command {
+	LIGHTBAR_CMD_DUMP = 0,
+	LIGHTBAR_CMD_OFF = 1,
+	LIGHTBAR_CMD_ON = 2,
+	LIGHTBAR_CMD_INIT = 3,
+	LIGHTBAR_CMD_BRIGHTNESS = 4,
+	LIGHTBAR_CMD_SEQ = 5,
+	LIGHTBAR_CMD_REG = 6,
+	LIGHTBAR_CMD_RGB = 7,
+	LIGHTBAR_CMD_GET_SEQ = 8,
+	LIGHTBAR_CMD_DEMO = 9,
+	LIGHTBAR_CMD_GET_PARAMS = 10,
+	LIGHTBAR_CMD_SET_PARAMS = 11,
+	LIGHTBAR_CMD_VERSION = 12,
+	LIGHTBAR_NUM_CMDS
+};
+
+/*****************************************************************************/
+/* LED control commands */
+
+#define EC_CMD_LED_CONTROL 0x29
+
+enum ec_led_id {
+	/* LED to indicate battery state of charge */
+	EC_LED_ID_BATTERY_LED = 0,
+	/*
+	 * LED to indicate system power state (on or in suspend).
+	 * May be on power button or on C-panel.
+	 */
+	EC_LED_ID_POWER_LED,
+	/* LED on power adapter or its plug */
+	EC_LED_ID_ADAPTER_LED,
+
+	EC_LED_ID_COUNT
+};
+
+/* LED control flags */
+#define EC_LED_FLAGS_QUERY (1 << 0) /* Query LED capability only */
+#define EC_LED_FLAGS_AUTO  (1 << 1) /* Switch LED back to automatic control */
+
+enum ec_led_colors {
+	EC_LED_COLOR_RED = 0,
+	EC_LED_COLOR_GREEN,
+	EC_LED_COLOR_BLUE,
+	EC_LED_COLOR_YELLOW,
+	EC_LED_COLOR_WHITE,
+
+	EC_LED_COLOR_COUNT
+};
+
+struct ec_params_led_control {
+	uint8_t led_id;     /* Which LED to control */
+	uint8_t flags;      /* Control flags */
+
+	uint8_t brightness[EC_LED_COLOR_COUNT];
+} __packed;
+
+struct ec_response_led_control {
+	/*
+	 * Available brightness value range.
+	 *
+	 * Range 0 means color channel not present.
+	 * Range 1 means on/off control.
+	 * Other values means the LED is control by PWM.
+	 */
+	uint8_t brightness_range[EC_LED_COLOR_COUNT];
+} __packed;
+
+/*****************************************************************************/
+/* Verified boot commands */
+
+/*
+ * Note: command code 0x29 version 0 was VBOOT_CMD in Link EVT; it may be
+ * reused for other purposes with version > 0.
+ */
+
+/* Verified boot hash command */
+#define EC_CMD_VBOOT_HASH 0x2A
+
+struct ec_params_vboot_hash {
+	uint8_t cmd;             /* enum ec_vboot_hash_cmd */
+	uint8_t hash_type;       /* enum ec_vboot_hash_type */
+	uint8_t nonce_size;      /* Nonce size; may be 0 */
+	uint8_t reserved0;       /* Reserved; set 0 */
+	uint32_t offset;         /* Offset in flash to hash */
+	uint32_t size;           /* Number of bytes to hash */
+	uint8_t nonce_data[64];  /* Nonce data; ignored if nonce_size=0 */
+} __packed;
+
+struct ec_response_vboot_hash {
+	uint8_t status;          /* enum ec_vboot_hash_status */
+	uint8_t hash_type;       /* enum ec_vboot_hash_type */
+	uint8_t digest_size;     /* Size of hash digest in bytes */
+	uint8_t reserved0;       /* Ignore; will be 0 */
+	uint32_t offset;         /* Offset in flash which was hashed */
+	uint32_t size;           /* Number of bytes hashed */
+	uint8_t hash_digest[64]; /* Hash digest data */
+} __packed;
+
+enum ec_vboot_hash_cmd {
+	EC_VBOOT_HASH_GET = 0,       /* Get current hash status */
+	EC_VBOOT_HASH_ABORT = 1,     /* Abort calculating current hash */
+	EC_VBOOT_HASH_START = 2,     /* Start computing a new hash */
+	EC_VBOOT_HASH_RECALC = 3,    /* Synchronously compute a new hash */
+};
+
+enum ec_vboot_hash_type {
+	EC_VBOOT_HASH_TYPE_SHA256 = 0, /* SHA-256 */
+};
+
+enum ec_vboot_hash_status {
+	EC_VBOOT_HASH_STATUS_NONE = 0, /* No hash (not started, or aborted) */
+	EC_VBOOT_HASH_STATUS_DONE = 1, /* Finished computing a hash */
+	EC_VBOOT_HASH_STATUS_BUSY = 2, /* Busy computing a hash */
+};
+
+/*
+ * Special values for offset for EC_VBOOT_HASH_START and EC_VBOOT_HASH_RECALC.
+ * If one of these is specified, the EC will automatically update offset and
+ * size to the correct values for the specified image (RO or RW).
+ */
+#define EC_VBOOT_HASH_OFFSET_RO 0xfffffffe
+#define EC_VBOOT_HASH_OFFSET_RW 0xfffffffd
+
+/*****************************************************************************/
+/*
+ * Motion sense commands. We'll make separate structs for sub-commands with
+ * different input args, so that we know how much to expect.
+ */
+#define EC_CMD_MOTION_SENSE_CMD 0x2B
+
+/* Motion sense commands */
+enum motionsense_command {
+	/*
+	 * Dump command returns all motion sensor data including motion sense
+	 * module flags and individual sensor flags.
+	 */
+	MOTIONSENSE_CMD_DUMP = 0,
+
+	/*
+	 * Info command returns data describing the details of a given sensor,
+	 * including enum motionsensor_type, enum motionsensor_location, and
+	 * enum motionsensor_chip.
+	 */
+	MOTIONSENSE_CMD_INFO = 1,
+
+	/*
+	 * EC Rate command is a setter/getter command for the EC sampling rate
+	 * of all motion sensors in milliseconds.
+	 */
+	MOTIONSENSE_CMD_EC_RATE = 2,
+
+	/*
+	 * Sensor ODR command is a setter/getter command for the output data
+	 * rate of a specific motion sensor in millihertz.
+	 */
+	MOTIONSENSE_CMD_SENSOR_ODR = 3,
+
+	/*
+	 * Sensor range command is a setter/getter command for the range of
+	 * a specified motion sensor in +/-G's or +/- deg/s.
+	 */
+	MOTIONSENSE_CMD_SENSOR_RANGE = 4,
+
+	/*
+	 * Setter/getter command for the keyboard wake angle. When the lid
+	 * angle is greater than this value, keyboard wake is disabled in S3,
+	 * and when the lid angle goes less than this value, keyboard wake is
+	 * enabled. Note, the lid angle measurement is an approximate,
+	 * un-calibrated value, hence the wake angle isn't exact.
+	 */
+	MOTIONSENSE_CMD_KB_WAKE_ANGLE = 5,
+
+	/* Number of motionsense sub-commands. */
+	MOTIONSENSE_NUM_CMDS
+};
+
+enum motionsensor_id {
+	EC_MOTION_SENSOR_ACCEL_BASE = 0,
+	EC_MOTION_SENSOR_ACCEL_LID = 1,
+	EC_MOTION_SENSOR_GYRO = 2,
+
+	/*
+	 * Note, if more sensors are added and this count changes, the padding
+	 * in ec_response_motion_sense dump command must be modified.
+	 */
+	EC_MOTION_SENSOR_COUNT = 3
+};
+
+/* List of motion sensor types. */
+enum motionsensor_type {
+	MOTIONSENSE_TYPE_ACCEL = 0,
+	MOTIONSENSE_TYPE_GYRO = 1,
+};
+
+/* List of motion sensor locations. */
+enum motionsensor_location {
+	MOTIONSENSE_LOC_BASE = 0,
+	MOTIONSENSE_LOC_LID = 1,
+};
+
+/* List of motion sensor chips. */
+enum motionsensor_chip {
+	MOTIONSENSE_CHIP_KXCJ9 = 0,
+};
+
+/* Module flag masks used for the dump sub-command. */
+#define MOTIONSENSE_MODULE_FLAG_ACTIVE (1<<0)
+
+/* Sensor flag masks used for the dump sub-command. */
+#define MOTIONSENSE_SENSOR_FLAG_PRESENT (1<<0)
+
+/*
+ * Send this value for the data element to only perform a read. If you
+ * send any other value, the EC will interpret it as data to set and will
+ * return the actual value set.
+ */
+#define EC_MOTION_SENSE_NO_VALUE -1
+
+struct ec_params_motion_sense {
+	uint8_t cmd;
+	union {
+		/* Used for MOTIONSENSE_CMD_DUMP. */
+		struct {
+			/* no args */
+		} dump;
+
+		/*
+		 * Used for MOTIONSENSE_CMD_EC_RATE and
+		 * MOTIONSENSE_CMD_KB_WAKE_ANGLE.
+		 */
+		struct {
+			/* Data to set or EC_MOTION_SENSE_NO_VALUE to read. */
+			int16_t data;
+		} ec_rate, kb_wake_angle;
+
+		/* Used for MOTIONSENSE_CMD_INFO. */
+		struct {
+			/* Should be element of enum motionsensor_id. */
+			uint8_t sensor_num;
+		} info;
+
+		/*
+		 * Used for MOTIONSENSE_CMD_SENSOR_ODR and
+		 * MOTIONSENSE_CMD_SENSOR_RANGE.
+		 */
+		struct {
+			/* Should be element of enum motionsensor_id. */
+			uint8_t sensor_num;
+
+			/* Rounding flag, true for round-up, false for down. */
+			uint8_t roundup;
+
+			uint16_t reserved;
+
+			/* Data to set or EC_MOTION_SENSE_NO_VALUE to read. */
+			int32_t data;
+		} sensor_odr, sensor_range;
+	};
+} __packed;
+
+struct ec_response_motion_sense {
+	union {
+		/* Used for MOTIONSENSE_CMD_DUMP. */
+		struct {
+			/* Flags representing the motion sensor module. */
+			uint8_t module_flags;
+
+			/* Flags for each sensor in enum motionsensor_id. */
+			uint8_t sensor_flags[EC_MOTION_SENSOR_COUNT];
+
+			/* Array of all sensor data. Each sensor is 3-axis. */
+			int16_t data[3*EC_MOTION_SENSOR_COUNT];
+		} dump;
+
+		/* Used for MOTIONSENSE_CMD_INFO. */
+		struct {
+			/* Should be element of enum motionsensor_type. */
+			uint8_t type;
+
+			/* Should be element of enum motionsensor_location. */
+			uint8_t location;
+
+			/* Should be element of enum motionsensor_chip. */
+			uint8_t chip;
+		} info;
+
+		/*
+		 * Used for MOTIONSENSE_CMD_EC_RATE, MOTIONSENSE_CMD_SENSOR_ODR,
+		 * MOTIONSENSE_CMD_SENSOR_RANGE, and
+		 * MOTIONSENSE_CMD_KB_WAKE_ANGLE.
+		 */
+		struct {
+			/* Current value of the parameter queried. */
+			int32_t ret;
+		} ec_rate, sensor_odr, sensor_range, kb_wake_angle;
+	};
+} __packed;
+
+/*****************************************************************************/
+/* USB charging control commands */
+
+/* Set USB port charging mode */
+#define EC_CMD_USB_CHARGE_SET_MODE 0x30
+
+struct ec_params_usb_charge_set_mode {
+	uint8_t usb_port_id;
+	uint8_t mode;
+} __packed;
+
+/*****************************************************************************/
+/* Persistent storage for host */
+
+/* Maximum bytes that can be read/written in a single command */
+#define EC_PSTORE_SIZE_MAX 64
+
+/* Get persistent storage info */
+#define EC_CMD_PSTORE_INFO 0x40
+
+struct ec_response_pstore_info {
+	/* Persistent storage size, in bytes */
+	uint32_t pstore_size;
+	/* Access size; read/write offset and size must be a multiple of this */
+	uint32_t access_size;
+} __packed;
+
+/*
+ * Read persistent storage
+ *
+ * Response is params.size bytes of data.
+ */
+#define EC_CMD_PSTORE_READ 0x41
+
+struct ec_params_pstore_read {
+	uint32_t offset;   /* Byte offset to read */
+	uint32_t size;     /* Size to read in bytes */
+} __packed;
+
+/* Write persistent storage */
+#define EC_CMD_PSTORE_WRITE 0x42
+
+struct ec_params_pstore_write {
+	uint32_t offset;   /* Byte offset to write */
+	uint32_t size;     /* Size to write in bytes */
+	uint8_t data[EC_PSTORE_SIZE_MAX];
+} __packed;
+
+/*****************************************************************************/
+/* Real-time clock */
+
+/* RTC params and response structures */
+struct ec_params_rtc {
+	uint32_t time;
+} __packed;
+
+struct ec_response_rtc {
+	uint32_t time;
+} __packed;
+
+/* These use ec_response_rtc */
+#define EC_CMD_RTC_GET_VALUE 0x44
+#define EC_CMD_RTC_GET_ALARM 0x45
+
+/* These all use ec_params_rtc */
+#define EC_CMD_RTC_SET_VALUE 0x46
+#define EC_CMD_RTC_SET_ALARM 0x47
+
+/*****************************************************************************/
+/* Port80 log access */
+
+/* Get last port80 code from previous boot */
+#define EC_CMD_PORT80_LAST_BOOT 0x48
+
+struct ec_response_port80_last_boot {
+	uint16_t code;
+} __packed;
+
+/*****************************************************************************/
+/* Thermal engine commands. Note that there are two implementations. We'll
+ * reuse the command number, but the data and behavior is incompatible.
+ * Version 0 is what originally shipped on Link.
+ * Version 1 separates the CPU thermal limits from the fan control.
+ */
+
+#define EC_CMD_THERMAL_SET_THRESHOLD 0x50
+#define EC_CMD_THERMAL_GET_THRESHOLD 0x51
+
+/* The version 0 structs are opaque. You have to know what they are for
+ * the get/set commands to make any sense.
+ */
+
+/* Version 0 - set */
+struct ec_params_thermal_set_threshold {
+	uint8_t sensor_type;
+	uint8_t threshold_id;
+	uint16_t value;
+} __packed;
+
+/* Version 0 - get */
+struct ec_params_thermal_get_threshold {
+	uint8_t sensor_type;
+	uint8_t threshold_id;
+} __packed;
+
+struct ec_response_thermal_get_threshold {
+	uint16_t value;
+} __packed;
+
+
+/* The version 1 structs are visible. */
+enum ec_temp_thresholds {
+	EC_TEMP_THRESH_WARN = 0,
+	EC_TEMP_THRESH_HIGH,
+	EC_TEMP_THRESH_HALT,
+
+	EC_TEMP_THRESH_COUNT
+};
+
+/* Thermal configuration for one temperature sensor. Temps are in degrees K.
+ * Zero values will be silently ignored by the thermal task.
+ */
+struct ec_thermal_config {
+	uint32_t temp_host[EC_TEMP_THRESH_COUNT]; /* levels of hotness */
+	uint32_t temp_fan_off;		/* no active cooling needed */
+	uint32_t temp_fan_max;		/* max active cooling needed */
+} __packed;
+
+/* Version 1 - get config for one sensor. */
+struct ec_params_thermal_get_threshold_v1 {
+	uint32_t sensor_num;
+} __packed;
+/* This returns a struct ec_thermal_config */
+
+/* Version 1 - set config for one sensor.
+ * Use read-modify-write for best results! */
+struct ec_params_thermal_set_threshold_v1 {
+	uint32_t sensor_num;
+	struct ec_thermal_config cfg;
+} __packed;
+/* This returns no data */
+
+/****************************************************************************/
+
+/* Toggle automatic fan control */
+#define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x52
+
+/* Get TMP006 calibration data */
+#define EC_CMD_TMP006_GET_CALIBRATION 0x53
+
+struct ec_params_tmp006_get_calibration {
+	uint8_t index;
+} __packed;
+
+struct ec_response_tmp006_get_calibration {
+	float s0;
+	float b0;
+	float b1;
+	float b2;
+} __packed;
+
+/* Set TMP006 calibration data */
+#define EC_CMD_TMP006_SET_CALIBRATION 0x54
+
+struct ec_params_tmp006_set_calibration {
+	uint8_t index;
+	uint8_t reserved[3];  /* Reserved; set 0 */
+	float s0;
+	float b0;
+	float b1;
+	float b2;
+} __packed;
+
+/* Read raw TMP006 data */
+#define EC_CMD_TMP006_GET_RAW 0x55
+
+struct ec_params_tmp006_get_raw {
+	uint8_t index;
+} __packed;
+
+struct ec_response_tmp006_get_raw {
+	int32_t t;  /* In 1/100 K */
+	int32_t v;  /* In nV */
+};
+
+/*****************************************************************************/
+/* MKBP - Matrix KeyBoard Protocol */
+
+/*
+ * Read key state
+ *
+ * Returns raw data for keyboard cols; see ec_response_mkbp_info.cols for
+ * expected response size.
+ */
+#define EC_CMD_MKBP_STATE 0x60
+
+/* Provide information about the matrix : number of rows and columns */
+#define EC_CMD_MKBP_INFO 0x61
+
+struct ec_response_mkbp_info {
+	uint32_t rows;
+	uint32_t cols;
+	uint8_t switches;
+} __packed;
+
+/* Simulate key press */
+#define EC_CMD_MKBP_SIMULATE_KEY 0x62
+
+struct ec_params_mkbp_simulate_key {
+	uint8_t col;
+	uint8_t row;
+	uint8_t pressed;
+} __packed;
+
+/* Configure keyboard scanning */
+#define EC_CMD_MKBP_SET_CONFIG 0x64
+#define EC_CMD_MKBP_GET_CONFIG 0x65
+
+/* flags */
+enum mkbp_config_flags {
+	EC_MKBP_FLAGS_ENABLE = 1,	/* Enable keyboard scanning */
+};
+
+enum mkbp_config_valid {
+	EC_MKBP_VALID_SCAN_PERIOD		= 1 << 0,
+	EC_MKBP_VALID_POLL_TIMEOUT		= 1 << 1,
+	EC_MKBP_VALID_MIN_POST_SCAN_DELAY	= 1 << 3,
+	EC_MKBP_VALID_OUTPUT_SETTLE		= 1 << 4,
+	EC_MKBP_VALID_DEBOUNCE_DOWN		= 1 << 5,
+	EC_MKBP_VALID_DEBOUNCE_UP		= 1 << 6,
+	EC_MKBP_VALID_FIFO_MAX_DEPTH		= 1 << 7,
+};
+
+/* Configuration for our key scanning algorithm */
+struct ec_mkbp_config {
+	uint32_t valid_mask;		/* valid fields */
+	uint8_t flags;		/* some flags (enum mkbp_config_flags) */
+	uint8_t valid_flags;		/* which flags are valid */
+	uint16_t scan_period_us;	/* period between start of scans */
+	/* revert to interrupt mode after no activity for this long */
+	uint32_t poll_timeout_us;
+	/*
+	 * minimum post-scan relax time. Once we finish a scan we check
+	 * the time until we are due to start the next one. If this time is
+	 * shorter this field, we use this instead.
+	 */
+	uint16_t min_post_scan_delay_us;
+	/* delay between setting up output and waiting for it to settle */
+	uint16_t output_settle_us;
+	uint16_t debounce_down_us;	/* time for debounce on key down */
+	uint16_t debounce_up_us;	/* time for debounce on key up */
+	/* maximum depth to allow for fifo (0 = no keyscan output) */
+	uint8_t fifo_max_depth;
+} __packed;
+
+struct ec_params_mkbp_set_config {
+	struct ec_mkbp_config config;
+} __packed;
+
+struct ec_response_mkbp_get_config {
+	struct ec_mkbp_config config;
+} __packed;
+
+/* Run the key scan emulation */
+#define EC_CMD_KEYSCAN_SEQ_CTRL 0x66
+
+enum ec_keyscan_seq_cmd {
+	EC_KEYSCAN_SEQ_STATUS = 0,	/* Get status information */
+	EC_KEYSCAN_SEQ_CLEAR = 1,	/* Clear sequence */
+	EC_KEYSCAN_SEQ_ADD = 2,		/* Add item to sequence */
+	EC_KEYSCAN_SEQ_START = 3,	/* Start running sequence */
+	EC_KEYSCAN_SEQ_COLLECT = 4,	/* Collect sequence summary data */
+};
+
+enum ec_collect_flags {
+	/*
+	 * Indicates this scan was processed by the EC. Due to timing, some
+	 * scans may be skipped.
+	 */
+	EC_KEYSCAN_SEQ_FLAG_DONE	= 1 << 0,
+};
+
+struct ec_collect_item {
+	uint8_t flags;		/* some flags (enum ec_collect_flags) */
+};
+
+struct ec_params_keyscan_seq_ctrl {
+	uint8_t cmd;	/* Command to send (enum ec_keyscan_seq_cmd) */
+	union {
+		struct {
+			uint8_t active;		/* still active */
+			uint8_t num_items;	/* number of items */
+			/* Current item being presented */
+			uint8_t cur_item;
+		} status;
+		struct {
+			/*
+			 * Absolute time for this scan, measured from the
+			 * start of the sequence.
+			 */
+			uint32_t time_us;
+			uint8_t scan[0];	/* keyscan data */
+		} add;
+		struct {
+			uint8_t start_item;	/* First item to return */
+			uint8_t num_items;	/* Number of items to return */
+		} collect;
+	};
+} __packed;
+
+struct ec_result_keyscan_seq_ctrl {
+	union {
+		struct {
+			uint8_t num_items;	/* Number of items */
+			/* Data for each item */
+			struct ec_collect_item item[0];
+		} collect;
+	};
+} __packed;
+
+/*****************************************************************************/
+/* Temperature sensor commands */
+
+/* Read temperature sensor info */
+#define EC_CMD_TEMP_SENSOR_GET_INFO 0x70
+
+struct ec_params_temp_sensor_get_info {
+	uint8_t id;
+} __packed;
+
+struct ec_response_temp_sensor_get_info {
+	char sensor_name[32];
+	uint8_t sensor_type;
+} __packed;
+
+/*****************************************************************************/
+
+/*
+ * Note: host commands 0x80 - 0x87 are reserved to avoid conflict with ACPI
+ * commands accidentally sent to the wrong interface.  See the ACPI section
+ * below.
+ */
+
+/*****************************************************************************/
+/* Host event commands */
+
+/*
+ * Host event mask params and response structures, shared by all of the host
+ * event commands below.
+ */
+struct ec_params_host_event_mask {
+	uint32_t mask;
+} __packed;
+
+struct ec_response_host_event_mask {
+	uint32_t mask;
+} __packed;
+
+/* These all use ec_response_host_event_mask */
+#define EC_CMD_HOST_EVENT_GET_B         0x87
+#define EC_CMD_HOST_EVENT_GET_SMI_MASK  0x88
+#define EC_CMD_HOST_EVENT_GET_SCI_MASK  0x89
+#define EC_CMD_HOST_EVENT_GET_WAKE_MASK 0x8d
+
+/* These all use ec_params_host_event_mask */
+#define EC_CMD_HOST_EVENT_SET_SMI_MASK  0x8a
+#define EC_CMD_HOST_EVENT_SET_SCI_MASK  0x8b
+#define EC_CMD_HOST_EVENT_CLEAR         0x8c
+#define EC_CMD_HOST_EVENT_SET_WAKE_MASK 0x8e
+#define EC_CMD_HOST_EVENT_CLEAR_B       0x8f
+
+/*****************************************************************************/
+/* Switch commands */
+
+/* Enable/disable LCD backlight */
+#define EC_CMD_SWITCH_ENABLE_BKLIGHT 0x90
+
+struct ec_params_switch_enable_backlight {
+	uint8_t enabled;
+} __packed;
+
+/* Enable/disable WLAN/Bluetooth */
+#define EC_CMD_SWITCH_ENABLE_WIRELESS 0x91
+#define EC_VER_SWITCH_ENABLE_WIRELESS 1
+
+/* Version 0 params; no response */
+struct ec_params_switch_enable_wireless_v0 {
+	uint8_t enabled;
+} __packed;
+
+/* Version 1 params */
+struct ec_params_switch_enable_wireless_v1 {
+	/* Flags to enable now */
+	uint8_t now_flags;
+
+	/* Which flags to copy from now_flags */
+	uint8_t now_mask;
+
+	/*
+	 * Flags to leave enabled in S3, if they're on at the S0->S3
+	 * transition.  (Other flags will be disabled by the S0->S3
+	 * transition.)
+	 */
+	uint8_t suspend_flags;
+
+	/* Which flags to copy from suspend_flags */
+	uint8_t suspend_mask;
+} __packed;
+
+/* Version 1 response */
+struct ec_response_switch_enable_wireless_v1 {
+	/* Flags to enable now */
+	uint8_t now_flags;
+
+	/* Flags to leave enabled in S3 */
+	uint8_t suspend_flags;
+} __packed;
+
+/*****************************************************************************/
+/* GPIO commands. Only available on EC if write protect has been disabled. */
+
+/* Set GPIO output value */
+#define EC_CMD_GPIO_SET 0x92
+
+struct ec_params_gpio_set {
+	char name[32];
+	uint8_t val;
+} __packed;
+
+/* Get GPIO value */
+#define EC_CMD_GPIO_GET 0x93
+
+struct ec_params_gpio_get {
+	char name[32];
+} __packed;
+struct ec_response_gpio_get {
+	uint8_t val;
+} __packed;
+
+/*****************************************************************************/
+/* I2C commands. Only available when flash write protect is unlocked. */
+
+/*
+ * TODO(crosbug.com/p/23570): These commands are deprecated, and will be
+ * removed soon.  Use EC_CMD_I2C_XFER instead.
+ */
+
+/* Read I2C bus */
+#define EC_CMD_I2C_READ 0x94
+
+struct ec_params_i2c_read {
+	uint16_t addr; /* 8-bit address (7-bit shifted << 1) */
+	uint8_t read_size; /* Either 8 or 16. */
+	uint8_t port;
+	uint8_t offset;
+} __packed;
+struct ec_response_i2c_read {
+	uint16_t data;
+} __packed;
+
+/* Write I2C bus */
+#define EC_CMD_I2C_WRITE 0x95
+
+struct ec_params_i2c_write {
+	uint16_t data;
+	uint16_t addr; /* 8-bit address (7-bit shifted << 1) */
+	uint8_t write_size; /* Either 8 or 16. */
+	uint8_t port;
+	uint8_t offset;
+} __packed;
+
+/*****************************************************************************/
+/* Charge state commands. Only available when flash write protect unlocked. */
+
+/* Force charge state machine to stop charging the battery or force it to
+ * discharge the battery.
+ */
+#define EC_CMD_CHARGE_CONTROL 0x96
+#define EC_VER_CHARGE_CONTROL 1
+
+enum ec_charge_control_mode {
+	CHARGE_CONTROL_NORMAL = 0,
+	CHARGE_CONTROL_IDLE,
+	CHARGE_CONTROL_DISCHARGE,
+};
+
+struct ec_params_charge_control {
+	uint32_t mode;  /* enum charge_control_mode */
+} __packed;
+
+/*****************************************************************************/
+/* Console commands. Only available when flash write protect is unlocked. */
+
+/* Snapshot console output buffer for use by EC_CMD_CONSOLE_READ. */
+#define EC_CMD_CONSOLE_SNAPSHOT 0x97
+
+/*
+ * Read next chunk of data from saved snapshot.
+ *
+ * Response is null-terminated string.  Empty string, if there is no more
+ * remaining output.
+ */
+#define EC_CMD_CONSOLE_READ 0x98
+
+/*****************************************************************************/
+
+/*
+ * Cut off battery power output if the battery supports.
+ *
+ * For unsupported battery, just don't implement this command and lets EC
+ * return EC_RES_INVALID_COMMAND.
+ */
+#define EC_CMD_BATTERY_CUT_OFF 0x99
+
+/*****************************************************************************/
+/* USB port mux control. */
+
+/*
+ * Switch USB mux or return to automatic switching.
+ */
+#define EC_CMD_USB_MUX 0x9a
+
+struct ec_params_usb_mux {
+	uint8_t mux;
+} __packed;
+
+/*****************************************************************************/
+/* LDOs / FETs control. */
+
+enum ec_ldo_state {
+	EC_LDO_STATE_OFF = 0,	/* the LDO / FET is shut down */
+	EC_LDO_STATE_ON = 1,	/* the LDO / FET is ON / providing power */
+};
+
+/*
+ * Switch on/off a LDO.
+ */
+#define EC_CMD_LDO_SET 0x9b
+
+struct ec_params_ldo_set {
+	uint8_t index;
+	uint8_t state;
+} __packed;
+
+/*
+ * Get LDO state.
+ */
+#define EC_CMD_LDO_GET 0x9c
+
+struct ec_params_ldo_get {
+	uint8_t index;
+} __packed;
+
+struct ec_response_ldo_get {
+	uint8_t state;
+} __packed;
+
+/*****************************************************************************/
+/* Power info. */
+
+/*
+ * Get power info.
+ */
+#define EC_CMD_POWER_INFO 0x9d
+
+struct ec_response_power_info {
+	uint32_t usb_dev_type;
+	uint16_t voltage_ac;
+	uint16_t voltage_system;
+	uint16_t current_system;
+	uint16_t usb_current_limit;
+} __packed;
+
+/*****************************************************************************/
+/* I2C passthru command */
+
+#define EC_CMD_I2C_PASSTHRU 0x9e
+
+/* Read data; if not present, message is a write */
+#define EC_I2C_FLAG_READ	(1 << 15)
+
+/* Mask for address */
+#define EC_I2C_ADDR_MASK	0x3ff
+
+#define EC_I2C_STATUS_NAK	(1 << 0) /* Transfer was not acknowledged */
+#define EC_I2C_STATUS_TIMEOUT	(1 << 1) /* Timeout during transfer */
+
+/* Any error */
+#define EC_I2C_STATUS_ERROR	(EC_I2C_STATUS_NAK | EC_I2C_STATUS_TIMEOUT)
+
+struct ec_params_i2c_passthru_msg {
+	uint16_t addr_flags;	/* I2C slave address (7 or 10 bits) and flags */
+	uint16_t len;		/* Number of bytes to read or write */
+} __packed;
+
+struct ec_params_i2c_passthru {
+	uint8_t port;		/* I2C port number */
+	uint8_t num_msgs;	/* Number of messages */
+	struct ec_params_i2c_passthru_msg msg[];
+	/* Data to write for all messages is concatenated here */
+} __packed;
+
+struct ec_response_i2c_passthru {
+	uint8_t i2c_status;	/* Status flags (EC_I2C_STATUS_...) */
+	uint8_t num_msgs;	/* Number of messages processed */
+	uint8_t data[];		/* Data read by messages concatenated here */
+} __packed;
+
+/*****************************************************************************/
+/* Power button hang detect */
+
+#define EC_CMD_HANG_DETECT 0x9f
+
+/* Reasons to start hang detection timer */
+/* Power button pressed */
+#define EC_HANG_START_ON_POWER_PRESS  (1 << 0)
+
+/* Lid closed */
+#define EC_HANG_START_ON_LID_CLOSE    (1 << 1)
+
+ /* Lid opened */
+#define EC_HANG_START_ON_LID_OPEN     (1 << 2)
+
+/* Start of AP S3->S0 transition (booting or resuming from suspend) */
+#define EC_HANG_START_ON_RESUME       (1 << 3)
+
+/* Reasons to cancel hang detection */
+
+/* Power button released */
+#define EC_HANG_STOP_ON_POWER_RELEASE (1 << 8)
+
+/* Any host command from AP received */
+#define EC_HANG_STOP_ON_HOST_COMMAND  (1 << 9)
+
+/* Stop on end of AP S0->S3 transition (suspending or shutting down) */
+#define EC_HANG_STOP_ON_SUSPEND       (1 << 10)
+
+/*
+ * If this flag is set, all the other fields are ignored, and the hang detect
+ * timer is started.  This provides the AP a way to start the hang timer
+ * without reconfiguring any of the other hang detect settings.  Note that
+ * you must previously have configured the timeouts.
+ */
+#define EC_HANG_START_NOW             (1 << 30)
+
+/*
+ * If this flag is set, all the other fields are ignored (including
+ * EC_HANG_START_NOW).  This provides the AP a way to stop the hang timer
+ * without reconfiguring any of the other hang detect settings.
+ */
+#define EC_HANG_STOP_NOW              (1 << 31)
+
+struct ec_params_hang_detect {
+	/* Flags; see EC_HANG_* */
+	uint32_t flags;
+
+	/* Timeout in msec before generating host event, if enabled */
+	uint16_t host_event_timeout_msec;
+
+	/* Timeout in msec before generating warm reboot, if enabled */
+	uint16_t warm_reboot_timeout_msec;
+} __packed;
+
+/*****************************************************************************/
+/* Commands for battery charging */
+
+/*
+ * This is the single catch-all host command to exchange data regarding the
+ * charge state machine (v2 and up).
+ */
+#define EC_CMD_CHARGE_STATE 0xa0
+
+/* Subcommands for this host command */
+enum charge_state_command {
+	CHARGE_STATE_CMD_GET_STATE,
+	CHARGE_STATE_CMD_GET_PARAM,
+	CHARGE_STATE_CMD_SET_PARAM,
+	CHARGE_STATE_NUM_CMDS
+};
+
+/*
+ * Known param numbers are defined here. Ranges are reserved for board-specific
+ * params, which are handled by the particular implementations.
+ */
+enum charge_state_params {
+	CS_PARAM_CHG_VOLTAGE,	      /* charger voltage limit */
+	CS_PARAM_CHG_CURRENT,	      /* charger current limit */
+	CS_PARAM_CHG_INPUT_CURRENT,   /* charger input current limit */
+	CS_PARAM_CHG_STATUS,	      /* charger-specific status */
+	CS_PARAM_CHG_OPTION,	      /* charger-specific options */
+	/* How many so far? */
+	CS_NUM_BASE_PARAMS,
+
+	/* Range for CONFIG_CHARGER_PROFILE_OVERRIDE params */
+	CS_PARAM_CUSTOM_PROFILE_MIN = 0x10000,
+	CS_PARAM_CUSTOM_PROFILE_MAX = 0x1ffff,
+
+	/* Other custom param ranges go here... */
+};
+
+struct ec_params_charge_state {
+	uint8_t cmd;				/* enum charge_state_command */
+	union {
+		struct {
+			/* no args */
+		} get_state;
+
+		struct {
+			uint32_t param;		/* enum charge_state_param */
+		} get_param;
+
+		struct {
+			uint32_t param;		/* param to set */
+			uint32_t value;		/* value to set */
+		} set_param;
+	};
+} __packed;
+
+struct ec_response_charge_state {
+	union {
+		struct {
+			int ac;
+			int chg_voltage;
+			int chg_current;
+			int chg_input_current;
+			int batt_state_of_charge;
+		} get_state;
+
+		struct {
+			uint32_t value;
+		} get_param;
+		struct {
+			/* no return values */
+		} set_param;
+	};
+} __packed;
+
+
+/*
+ * Set maximum battery charging current.
+ */
+#define EC_CMD_CHARGE_CURRENT_LIMIT 0xa1
+
+struct ec_params_current_limit {
+	uint32_t limit; /* in mA */
+} __packed;
+
+/*
+ * Set maximum external power current.
+ */
+#define EC_CMD_EXT_POWER_CURRENT_LIMIT 0xa2
+
+struct ec_params_ext_power_current_limit {
+	uint32_t limit; /* in mA */
+} __packed;
+
+/*****************************************************************************/
+/* Smart battery pass-through */
+
+/* Get / Set 16-bit smart battery registers */
+#define EC_CMD_SB_READ_WORD   0xb0
+#define EC_CMD_SB_WRITE_WORD  0xb1
+
+/* Get / Set string smart battery parameters
+ * formatted as SMBUS "block".
+ */
+#define EC_CMD_SB_READ_BLOCK  0xb2
+#define EC_CMD_SB_WRITE_BLOCK 0xb3
+
+struct ec_params_sb_rd {
+	uint8_t reg;
+} __packed;
+
+struct ec_response_sb_rd_word {
+	uint16_t value;
+} __packed;
+
+struct ec_params_sb_wr_word {
+	uint8_t reg;
+	uint16_t value;
+} __packed;
+
+struct ec_response_sb_rd_block {
+	uint8_t data[32];
+} __packed;
+
+struct ec_params_sb_wr_block {
+	uint8_t reg;
+	uint16_t data[32];
+} __packed;
+
+/*****************************************************************************/
+/* System commands */
+
+/*
+ * TODO(crosbug.com/p/23747): This is a confusing name, since it doesn't
+ * necessarily reboot the EC.  Rename to "image" or something similar?
+ */
+#define EC_CMD_REBOOT_EC 0xd2
+
+/* Command */
+enum ec_reboot_cmd {
+	EC_REBOOT_CANCEL = 0,        /* Cancel a pending reboot */
+	EC_REBOOT_JUMP_RO = 1,       /* Jump to RO without rebooting */
+	EC_REBOOT_JUMP_RW = 2,       /* Jump to RW without rebooting */
+	/* (command 3 was jump to RW-B) */
+	EC_REBOOT_COLD = 4,          /* Cold-reboot */
+	EC_REBOOT_DISABLE_JUMP = 5,  /* Disable jump until next reboot */
+	EC_REBOOT_HIBERNATE = 6      /* Hibernate EC */
+};
+
+/* Flags for ec_params_reboot_ec.reboot_flags */
+#define EC_REBOOT_FLAG_RESERVED0      (1 << 0)  /* Was recovery request */
+#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN (1 << 1)  /* Reboot after AP shutdown */
+
+struct ec_params_reboot_ec {
+	uint8_t cmd;           /* enum ec_reboot_cmd */
+	uint8_t flags;         /* See EC_REBOOT_FLAG_* */
+} __packed;
+
+/*
+ * Get information on last EC panic.
+ *
+ * Returns variable-length platform-dependent panic information.  See panic.h
+ * for details.
+ */
+#define EC_CMD_GET_PANIC_INFO 0xd3
+
+/*****************************************************************************/
+/*
+ * 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 0x80
+
+/*
+ * 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 0x81
+
+/*
+ * 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 0x84
+
+/* 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 (1 << 0)
+#define EC_ACPI_MEM_TEMP_COMMIT_ENABLE_MASK (1 << 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
+
+/* Current version of ACPI memory address space */
+#define EC_ACPI_MEM_VERSION_CURRENT 1
+
+
+/*****************************************************************************/
+/*
+ * Special commands
+ *
+ * These do not follow the normal rules for commands.  See each command for
+ * details.
+ */
+
+/*
+ * Reboot NOW
+ *
+ * This command will work even when the EC LPC interface is busy, because the
+ * reboot command is processed at interrupt level.  Note that when the EC
+ * reboots, the host will reboot too, so there is no response to this command.
+ *
+ * Use EC_CMD_REBOOT_EC to reboot the EC more politely.
+ */
+#define EC_CMD_REBOOT 0xd1  /* Think "die" */
+
+/*
+ * Resend last response (not supported on LPC).
+ *
+ * Returns EC_RES_UNAVAILABLE if there is no response available - for example,
+ * there was no previous command, or the previous command's response was too
+ * big to save.
+ */
+#define EC_CMD_RESEND_RESPONSE 0xdb
+
+/*
+ * This header byte on a command indicate version 0. Any header byte less
+ * than this means that we are talking to an old EC which doesn't support
+ * versioning. In that case, we assume version 0.
+ *
+ * Header bytes greater than this indicate a later version. For example,
+ * EC_CMD_VERSION0 + 1 means we are using version 1.
+ *
+ * The old EC interface must not use commands 0xdc or higher.
+ */
+#define EC_CMD_VERSION0 0xdc
+
+#endif  /* !__ACPI__ */
+
+/*****************************************************************************/
+/*
+ * Deprecated constants. These constants have been renamed for clarity. The
+ * meaning and size has not changed. Programs that use the old names should
+ * switch to the new names soon, as the old names may not be carried forward
+ * forever.
+ */
+#define EC_HOST_PARAM_SIZE      EC_PROTO2_MAX_PARAM_SIZE
+#define EC_LPC_ADDR_OLD_PARAM   EC_HOST_CMD_REGION1
+#define EC_OLD_PARAM_SIZE       EC_HOST_CMD_REGION_SIZE
+
+#endif  /* __CROS_EC_COMMANDS_H */