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greybus_protocols.h
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/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2014 - 2015 Google Inc. All rights reserved.
* Copyright(c) 2014 - 2015 Linaro Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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 version 2 for more details.
*
* BSD LICENSE
*
* Copyright(c) 2014 - 2015 Google Inc. All rights reserved.
* Copyright(c) 2014 - 2015 Linaro Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. or Linaro Ltd. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
* LINARO LTD. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __GREYBUS_PROTOCOLS_H
#define __GREYBUS_PROTOCOLS_H
/* Fixed IDs for control/svc protocols */
/* Device ID of SVC and AP */
#define GB_DEVICE_ID_SVC 0
#define GB_DEVICE_ID_AP 1
#define GB_DEVICE_ID_MODULES_START 2
/*
* Bundle/cport for control/svc cport: The same bundle/cport is shared by both
* CONTROL and SVC protocols for communication between AP and SVC.
*/
#define GB_SVC_BUNDLE_ID 0
#define GB_SVC_CPORT_ID 0
#define GB_CONTROL_BUNDLE_ID 0
#define GB_CONTROL_CPORT_ID 0
/*
* All operation messages (both requests and responses) begin with
* a header that encodes the size of the message (header included).
* This header also contains a unique identifier, that associates a
* response message with its operation. The header contains an
* operation type field, whose interpretation is dependent on what
* type of protocol is used over the connection. The high bit
* (0x80) of the operation type field is used to indicate whether
* the message is a request (clear) or a response (set).
*
* Response messages include an additional result byte, which
* communicates the result of the corresponding request. A zero
* result value means the operation completed successfully. Any
* other value indicates an error; in this case, the payload of the
* response message (if any) is ignored. The result byte must be
* zero in the header for a request message.
*
* The wire format for all numeric fields in the header is little
* endian. Any operation-specific data begins immediately after the
* header.
*/
struct gb_operation_msg_hdr {
__le16 size; /* Size in bytes of header + payload */
__le16 operation_id; /* Operation unique id */
__u8 type; /* E.g GB_I2C_TYPE_* or GB_GPIO_TYPE_* */
__u8 result; /* Result of request (in responses only) */
__u8 pad[2]; /* must be zero (ignore when read) */
} __packed;
/* Generic request numbers supported by all modules */
#define GB_REQUEST_TYPE_INVALID 0x00
#define GB_REQUEST_TYPE_PROTOCOL_VERSION 0x01
struct gb_protocol_version_request {
__u8 major;
__u8 minor;
} __packed;
struct gb_protocol_version_response {
__u8 major;
__u8 minor;
} __packed;
/* Control Protocol */
/* Greybus control request types */
#define GB_CONTROL_TYPE_VERSION 0x01
#define GB_CONTROL_TYPE_PROBE_AP 0x02
#define GB_CONTROL_TYPE_GET_MANIFEST_SIZE 0x03
#define GB_CONTROL_TYPE_GET_MANIFEST 0x04
#define GB_CONTROL_TYPE_CONNECTED 0x05
#define GB_CONTROL_TYPE_DISCONNECTED 0x06
#define GB_CONTROL_TYPE_INTERFACE_VERSION 0x0a
#define GB_CONTROL_TYPE_BUNDLE_VERSION 0x0b
struct gb_control_version_request {
__u8 major;
__u8 minor;
} __packed;
struct gb_control_version_response {
__u8 major;
__u8 minor;
} __packed;
struct gb_control_bundle_version_request {
__u8 bundle_id;
} __packed;
struct gb_control_bundle_version_response {
__u8 major;
__u8 minor;
} __packed;
/* Control protocol manifest get size request has no payload*/
struct gb_control_get_manifest_size_response {
__le16 size;
} __packed;
/* Control protocol manifest get request has no payload */
struct gb_control_get_manifest_response {
__u8 data[0];
} __packed;
/* Control protocol [dis]connected request */
struct gb_control_connected_request {
__le16 cport_id;
} __packed;
struct gb_control_disconnected_request {
__le16 cport_id;
} __packed;
/* Control protocol [dis]connected response has no payload */
/* Control protocol interface version request has no payload */
struct gb_control_interface_version_response {
__le16 major;
__le16 minor;
} __packed;
/* APBridge protocol */
/* request APB1 log */
#define GB_APB_REQUEST_LOG 0x02
/* request to map a cport to bulk in and bulk out endpoints */
#define GB_APB_REQUEST_EP_MAPPING 0x03
/* request to get the number of cports available */
#define GB_APB_REQUEST_CPORT_COUNT 0x04
/* request to reset a cport state */
#define GB_APB_REQUEST_RESET_CPORT 0x05
/* request to time the latency of messages on a given cport */
#define GB_APB_REQUEST_LATENCY_TAG_EN 0x06
#define GB_APB_REQUEST_LATENCY_TAG_DIS 0x07
/* request to control the CSI transmitter */
#define GB_APB_REQUEST_CSI_TX_CONTROL 0x08
/* request to control the CSI transmitter */
#define GB_APB_REQUEST_AUDIO_CONTROL 0x09
/* Firmware Protocol */
/* Version of the Greybus firmware protocol we support */
#define GB_FIRMWARE_VERSION_MAJOR 0x00
#define GB_FIRMWARE_VERSION_MINOR 0x01
/* Greybus firmware request types */
#define GB_FIRMWARE_TYPE_VERSION 0x01
#define GB_FIRMWARE_TYPE_FIRMWARE_SIZE 0x02
#define GB_FIRMWARE_TYPE_GET_FIRMWARE 0x03
#define GB_FIRMWARE_TYPE_READY_TO_BOOT 0x04
#define GB_FIRMWARE_TYPE_AP_READY 0x05 /* Request with no-payload */
#define GB_FIRMWARE_TYPE_GET_VID_PID 0x06 /* Request with no-payload */
/* FIXME: remove all ES2-specific identifiers from the kernel */
#define ES2_DDBL1_MFR_ID 0x00000126
#define ES2_DDBL1_PROD_ID 0x00001000
/* Greybus firmware boot stages */
#define GB_FIRMWARE_BOOT_STAGE_ONE 0x01 /* Reserved for the boot ROM */
#define GB_FIRMWARE_BOOT_STAGE_TWO 0x02 /* Firmware package to be loaded by the boot ROM */
#define GB_FIRMWARE_BOOT_STAGE_THREE 0x03 /* Module personality package loaded by Stage 2 firmware */
/* Greybus firmware ready to boot status */
#define GB_FIRMWARE_BOOT_STATUS_INVALID 0x00 /* Firmware blob could not be validated */
#define GB_FIRMWARE_BOOT_STATUS_INSECURE 0x01 /* Firmware blob is valid but insecure */
#define GB_FIRMWARE_BOOT_STATUS_SECURE 0x02 /* Firmware blob is valid and secure */
/* Max firmware data fetch size in bytes */
#define GB_FIRMWARE_FETCH_MAX 2000
struct gb_firmware_version_request {
__u8 major;
__u8 minor;
} __packed;
struct gb_firmware_version_response {
__u8 major;
__u8 minor;
} __packed;
/* Firmware protocol firmware size request/response */
struct gb_firmware_size_request {
__u8 stage;
} __packed;
struct gb_firmware_size_response {
__le32 size;
} __packed;
/* Firmware protocol get firmware request/response */
struct gb_firmware_get_firmware_request {
__le32 offset;
__le32 size;
} __packed;
struct gb_firmware_get_firmware_response {
__u8 data[0];
} __packed;
/* Firmware protocol Ready to boot request */
struct gb_firmware_ready_to_boot_request {
__u8 status;
} __packed;
/* Firmware protocol Ready to boot response has no payload */
/* Firmware protocol get VID/PID request has no payload */
struct gb_firmware_get_vid_pid_response {
__le32 vendor_id;
__le32 product_id;
} __packed;
/* Power Supply */
/* Version of the Greybus power supply protocol we support */
#define GB_POWER_SUPPLY_VERSION_MAJOR 0x00
#define GB_POWER_SUPPLY_VERSION_MINOR 0x01
/* Greybus power supply request types */
#define GB_POWER_SUPPLY_TYPE_GET_SUPPLIES 0x02
#define GB_POWER_SUPPLY_TYPE_GET_DESCRIPTION 0x03
#define GB_POWER_SUPPLY_TYPE_GET_PROP_DESCRIPTORS 0x04
#define GB_POWER_SUPPLY_TYPE_GET_PROPERTY 0x05
#define GB_POWER_SUPPLY_TYPE_SET_PROPERTY 0x06
#define GB_POWER_SUPPLY_TYPE_EVENT 0x07
/* Should match up with battery technologies in linux/power_supply.h */
#define GB_POWER_SUPPLY_TECH_UNKNOWN 0x0000
#define GB_POWER_SUPPLY_TECH_NiMH 0x0001
#define GB_POWER_SUPPLY_TECH_LION 0x0002
#define GB_POWER_SUPPLY_TECH_LIPO 0x0003
#define GB_POWER_SUPPLY_TECH_LiFe 0x0004
#define GB_POWER_SUPPLY_TECH_NiCd 0x0005
#define GB_POWER_SUPPLY_TECH_LiMn 0x0006
/* Should match up with power supply types in linux/power_supply.h */
#define GB_POWER_SUPPLY_UNKNOWN_TYPE 0x0000
#define GB_POWER_SUPPLY_BATTERY_TYPE 0x0001
#define GB_POWER_SUPPLY_UPS_TYPE 0x0002
#define GB_POWER_SUPPLY_MAINS_TYPE 0x0003
#define GB_POWER_SUPPLY_USB_TYPE 0x0004
#define GB_POWER_SUPPLY_USB_DCP_TYPE 0x0005
#define GB_POWER_SUPPLY_USB_CDP_TYPE 0x0006
#define GB_POWER_SUPPLY_USB_ACA_TYPE 0x0007
/* Should match up with power supply health in linux/power_supply.h */
#define GB_POWER_SUPPLY_HEALTH_UNKNOWN 0x0000
#define GB_POWER_SUPPLY_HEALTH_GOOD 0x0001
#define GB_POWER_SUPPLY_HEALTH_OVERHEAT 0x0002
#define GB_POWER_SUPPLY_HEALTH_DEAD 0x0003
#define GB_POWER_SUPPLY_HEALTH_OVERVOLTAGE 0x0004
#define GB_POWER_SUPPLY_HEALTH_UNSPEC_FAILURE 0x0005
#define GB_POWER_SUPPLY_HEALTH_COLD 0x0006
#define GB_POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE 0x0007
#define GB_POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE 0x0008
/* Should match up with battery status in linux/power_supply.h */
#define GB_POWER_SUPPLY_STATUS_UNKNOWN 0x0000
#define GB_POWER_SUPPLY_STATUS_CHARGING 0x0001
#define GB_POWER_SUPPLY_STATUS_DISCHARGING 0x0002
#define GB_POWER_SUPPLY_STATUS_NOT_CHARGING 0x0003
#define GB_POWER_SUPPLY_STATUS_FULL 0x0004
struct gb_power_supply_get_supplies_response {
__u8 supplies_count;
} __packed;
struct gb_power_supply_get_description_request {
__u8 psy_id;
} __packed;
struct gb_power_supply_get_description_response {
__u8 manufacturer[32];
__u8 model[32];
__u8 serial_number[32];
__le16 type;
__u8 properties_count;
} __packed;
struct gb_power_supply_props_desc {
__u8 property;
#define GB_POWER_SUPPLY_PROP_STATUS 0x00
#define GB_POWER_SUPPLY_PROP_CHARGE_TYPE 0x01
#define GB_POWER_SUPPLY_PROP_HEALTH 0x02
#define GB_POWER_SUPPLY_PROP_PRESENT 0x03
#define GB_POWER_SUPPLY_PROP_ONLINE 0x04
#define GB_POWER_SUPPLY_PROP_AUTHENTIC 0x05
#define GB_POWER_SUPPLY_PROP_TECHNOLOGY 0x06
#define GB_POWER_SUPPLY_PROP_CYCLE_COUNT 0x07
#define GB_POWER_SUPPLY_PROP_VOLTAGE_MAX 0x08
#define GB_POWER_SUPPLY_PROP_VOLTAGE_MIN 0x09
#define GB_POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN 0x0A
#define GB_POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN 0x0B
#define GB_POWER_SUPPLY_PROP_VOLTAGE_NOW 0x0C
#define GB_POWER_SUPPLY_PROP_VOLTAGE_AVG 0x0D
#define GB_POWER_SUPPLY_PROP_VOLTAGE_OCV 0x0E
#define GB_POWER_SUPPLY_PROP_VOLTAGE_BOOT 0x0F
#define GB_POWER_SUPPLY_PROP_CURRENT_MAX 0x10
#define GB_POWER_SUPPLY_PROP_CURRENT_NOW 0x11
#define GB_POWER_SUPPLY_PROP_CURRENT_AVG 0x12
#define GB_POWER_SUPPLY_PROP_CURRENT_BOOT 0x13
#define GB_POWER_SUPPLY_PROP_POWER_NOW 0x14
#define GB_POWER_SUPPLY_PROP_POWER_AVG 0x15
#define GB_POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN 0x16
#define GB_POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN 0x17
#define GB_POWER_SUPPLY_PROP_CHARGE_FULL 0x18
#define GB_POWER_SUPPLY_PROP_CHARGE_EMPTY 0x19
#define GB_POWER_SUPPLY_PROP_CHARGE_NOW 0x1A
#define GB_POWER_SUPPLY_PROP_CHARGE_AVG 0x1B
#define GB_POWER_SUPPLY_PROP_CHARGE_COUNTER 0x1C
#define GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT 0x1D
#define GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX 0x1E
#define GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE 0x1F
#define GB_POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX 0x20
#define GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT 0x21
#define GB_POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX 0x22
#define GB_POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT 0x23
#define GB_POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN 0x24
#define GB_POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN 0x25
#define GB_POWER_SUPPLY_PROP_ENERGY_FULL 0x26
#define GB_POWER_SUPPLY_PROP_ENERGY_EMPTY 0x27
#define GB_POWER_SUPPLY_PROP_ENERGY_NOW 0x28
#define GB_POWER_SUPPLY_PROP_ENERGY_AVG 0x29
#define GB_POWER_SUPPLY_PROP_CAPACITY 0x2A
#define GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN 0x2B
#define GB_POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX 0x2C
#define GB_POWER_SUPPLY_PROP_CAPACITY_LEVEL 0x2D
#define GB_POWER_SUPPLY_PROP_TEMP 0x2E
#define GB_POWER_SUPPLY_PROP_TEMP_MAX 0x2F
#define GB_POWER_SUPPLY_PROP_TEMP_MIN 0x30
#define GB_POWER_SUPPLY_PROP_TEMP_ALERT_MIN 0x31
#define GB_POWER_SUPPLY_PROP_TEMP_ALERT_MAX 0x32
#define GB_POWER_SUPPLY_PROP_TEMP_AMBIENT 0x33
#define GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN 0x34
#define GB_POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX 0x35
#define GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW 0x36
#define GB_POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG 0x37
#define GB_POWER_SUPPLY_PROP_TIME_TO_FULL_NOW 0x38
#define GB_POWER_SUPPLY_PROP_TIME_TO_FULL_AVG 0x39
#define GB_POWER_SUPPLY_PROP_TYPE 0x3A
#define GB_POWER_SUPPLY_PROP_SCOPE 0x3B
#define GB_POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT 0x3C
#define GB_POWER_SUPPLY_PROP_CALIBRATE 0x3D
__u8 is_writeable;
} __packed;
struct gb_power_supply_get_property_descriptors_request {
__u8 psy_id;
} __packed;
struct gb_power_supply_get_property_descriptors_response {
__u8 properties_count;
struct gb_power_supply_props_desc props[];
} __packed;
struct gb_power_supply_get_property_request {
__u8 psy_id;
__u8 property;
} __packed;
struct gb_power_supply_get_property_response {
__le32 prop_val;
};
struct gb_power_supply_set_property_request {
__u8 psy_id;
__u8 property;
__le32 prop_val;
} __packed;
struct gb_power_supply_event_request {
__u8 psy_id;
__u8 event;
#define GB_POWER_SUPPLY_UPDATE 0x01
} __packed;
/* HID */
/* Version of the Greybus hid protocol we support */
#define GB_HID_VERSION_MAJOR 0x00
#define GB_HID_VERSION_MINOR 0x01
/* Greybus HID operation types */
#define GB_HID_TYPE_GET_DESC 0x02
#define GB_HID_TYPE_GET_REPORT_DESC 0x03
#define GB_HID_TYPE_PWR_ON 0x04
#define GB_HID_TYPE_PWR_OFF 0x05
#define GB_HID_TYPE_GET_REPORT 0x06
#define GB_HID_TYPE_SET_REPORT 0x07
#define GB_HID_TYPE_IRQ_EVENT 0x08
/* Report type */
#define GB_HID_INPUT_REPORT 0
#define GB_HID_OUTPUT_REPORT 1
#define GB_HID_FEATURE_REPORT 2
/* Different request/response structures */
/* HID get descriptor response */
struct gb_hid_desc_response {
__u8 bLength;
__le16 wReportDescLength;
__le16 bcdHID;
__le16 wProductID;
__le16 wVendorID;
__u8 bCountryCode;
} __packed;
/* HID get report request/response */
struct gb_hid_get_report_request {
__u8 report_type;
__u8 report_id;
} __packed;
/* HID set report request */
struct gb_hid_set_report_request {
__u8 report_type;
__u8 report_id;
__u8 report[0];
} __packed;
/* HID input report request, via interrupt pipe */
struct gb_hid_input_report_request {
__u8 report[0];
} __packed;
/* I2C */
/* Version of the Greybus i2c protocol we support */
#define GB_I2C_VERSION_MAJOR 0x00
#define GB_I2C_VERSION_MINOR 0x01
/* Greybus i2c request types */
#define GB_I2C_TYPE_FUNCTIONALITY 0x02
#define GB_I2C_TYPE_TIMEOUT 0x03
#define GB_I2C_TYPE_RETRIES 0x04
#define GB_I2C_TYPE_TRANSFER 0x05
#define GB_I2C_RETRIES_DEFAULT 3
#define GB_I2C_TIMEOUT_DEFAULT 1000 /* milliseconds */
/* functionality request has no payload */
struct gb_i2c_functionality_response {
__le32 functionality;
} __packed;
struct gb_i2c_timeout_request {
__le16 msec;
} __packed;
/* timeout response has no payload */
struct gb_i2c_retries_request {
__u8 retries;
} __packed;
/* retries response has no payload */
/*
* Outgoing data immediately follows the op count and ops array.
* The data for each write (master -> slave) op in the array is sent
* in order, with no (e.g. pad) bytes separating them.
*
* Short reads cause the entire transfer request to fail So response
* payload consists only of bytes read, and the number of bytes is
* exactly what was specified in the corresponding op. Like
* outgoing data, the incoming data is in order and contiguous.
*/
struct gb_i2c_transfer_op {
__le16 addr;
__le16 flags;
__le16 size;
} __packed;
struct gb_i2c_transfer_request {
__le16 op_count;
struct gb_i2c_transfer_op ops[0]; /* op_count of these */
} __packed;
struct gb_i2c_transfer_response {
__u8 data[0]; /* inbound data */
} __packed;
/* GPIO */
/* Version of the Greybus GPIO protocol we support */
#define GB_GPIO_VERSION_MAJOR 0x00
#define GB_GPIO_VERSION_MINOR 0x01
/* Greybus GPIO request types */
#define GB_GPIO_TYPE_LINE_COUNT 0x02
#define GB_GPIO_TYPE_ACTIVATE 0x03
#define GB_GPIO_TYPE_DEACTIVATE 0x04
#define GB_GPIO_TYPE_GET_DIRECTION 0x05
#define GB_GPIO_TYPE_DIRECTION_IN 0x06
#define GB_GPIO_TYPE_DIRECTION_OUT 0x07
#define GB_GPIO_TYPE_GET_VALUE 0x08
#define GB_GPIO_TYPE_SET_VALUE 0x09
#define GB_GPIO_TYPE_SET_DEBOUNCE 0x0a
#define GB_GPIO_TYPE_IRQ_TYPE 0x0b
#define GB_GPIO_TYPE_IRQ_MASK 0x0c
#define GB_GPIO_TYPE_IRQ_UNMASK 0x0d
#define GB_GPIO_TYPE_IRQ_EVENT 0x0e
#define GB_GPIO_IRQ_TYPE_NONE 0x00
#define GB_GPIO_IRQ_TYPE_EDGE_RISING 0x01
#define GB_GPIO_IRQ_TYPE_EDGE_FALLING 0x02
#define GB_GPIO_IRQ_TYPE_EDGE_BOTH 0x03
#define GB_GPIO_IRQ_TYPE_LEVEL_HIGH 0x04
#define GB_GPIO_IRQ_TYPE_LEVEL_LOW 0x08
/* line count request has no payload */
struct gb_gpio_line_count_response {
__u8 count;
} __packed;
struct gb_gpio_activate_request {
__u8 which;
} __packed;
/* activate response has no payload */
struct gb_gpio_deactivate_request {
__u8 which;
} __packed;
/* deactivate response has no payload */
struct gb_gpio_get_direction_request {
__u8 which;
} __packed;
struct gb_gpio_get_direction_response {
__u8 direction;
} __packed;
struct gb_gpio_direction_in_request {
__u8 which;
} __packed;
/* direction in response has no payload */
struct gb_gpio_direction_out_request {
__u8 which;
__u8 value;
} __packed;
/* direction out response has no payload */
struct gb_gpio_get_value_request {
__u8 which;
} __packed;
struct gb_gpio_get_value_response {
__u8 value;
} __packed;
struct gb_gpio_set_value_request {
__u8 which;
__u8 value;
} __packed;
/* set value response has no payload */
struct gb_gpio_set_debounce_request {
__u8 which;
__le16 usec;
} __packed;
/* debounce response has no payload */
struct gb_gpio_irq_type_request {
__u8 which;
__u8 type;
} __packed;
/* irq type response has no payload */
struct gb_gpio_irq_mask_request {
__u8 which;
} __packed;
/* irq mask response has no payload */
struct gb_gpio_irq_unmask_request {
__u8 which;
} __packed;
/* irq unmask response has no payload */
/* irq event requests originate on another module and are handled on the AP */
struct gb_gpio_irq_event_request {
__u8 which;
} __packed;
/* irq event has no response */
/* PWM */
/* Version of the Greybus PWM protocol we support */
#define GB_PWM_VERSION_MAJOR 0x00
#define GB_PWM_VERSION_MINOR 0x01
/* Greybus PWM operation types */
#define GB_PWM_TYPE_PWM_COUNT 0x02
#define GB_PWM_TYPE_ACTIVATE 0x03
#define GB_PWM_TYPE_DEACTIVATE 0x04
#define GB_PWM_TYPE_CONFIG 0x05
#define GB_PWM_TYPE_POLARITY 0x06
#define GB_PWM_TYPE_ENABLE 0x07
#define GB_PWM_TYPE_DISABLE 0x08
/* pwm count request has no payload */
struct gb_pwm_count_response {
__u8 count;
} __packed;
struct gb_pwm_activate_request {
__u8 which;
} __packed;
struct gb_pwm_deactivate_request {
__u8 which;
} __packed;
struct gb_pwm_config_request {
__u8 which;
__le32 duty;
__le32 period;
} __packed;
struct gb_pwm_polarity_request {
__u8 which;
__u8 polarity;
} __packed;
struct gb_pwm_enable_request {
__u8 which;
} __packed;
struct gb_pwm_disable_request {
__u8 which;
} __packed;
/* SPI */
/* Version of the Greybus spi protocol we support */
#define GB_SPI_VERSION_MAJOR 0x00
#define GB_SPI_VERSION_MINOR 0x01
/* Should match up with modes in linux/spi/spi.h */
#define GB_SPI_MODE_CPHA 0x01 /* clock phase */
#define GB_SPI_MODE_CPOL 0x02 /* clock polarity */
#define GB_SPI_MODE_MODE_0 (0|0) /* (original MicroWire) */
#define GB_SPI_MODE_MODE_1 (0|GB_SPI_MODE_CPHA)
#define GB_SPI_MODE_MODE_2 (GB_SPI_MODE_CPOL|0)
#define GB_SPI_MODE_MODE_3 (GB_SPI_MODE_CPOL|GB_SPI_MODE_CPHA)
#define GB_SPI_MODE_CS_HIGH 0x04 /* chipselect active high? */
#define GB_SPI_MODE_LSB_FIRST 0x08 /* per-word bits-on-wire */
#define GB_SPI_MODE_3WIRE 0x10 /* SI/SO signals shared */
#define GB_SPI_MODE_LOOP 0x20 /* loopback mode */
#define GB_SPI_MODE_NO_CS 0x40 /* 1 dev/bus, no chipselect */
#define GB_SPI_MODE_READY 0x80 /* slave pulls low to pause */
/* Should match up with flags in linux/spi/spi.h */
#define GB_SPI_FLAG_HALF_DUPLEX BIT(0) /* can't do full duplex */
#define GB_SPI_FLAG_NO_RX BIT(1) /* can't do buffer read */
#define GB_SPI_FLAG_NO_TX BIT(2) /* can't do buffer write */
/* Greybus spi operation types */
#define GB_SPI_TYPE_MASTER_CONFIG 0x02
#define GB_SPI_TYPE_DEVICE_CONFIG 0x03
#define GB_SPI_TYPE_TRANSFER 0x04
/* mode request has no payload */
struct gb_spi_master_config_response {
__le32 bits_per_word_mask;
__le32 min_speed_hz;
__le32 max_speed_hz;
__le16 mode;
__le16 flags;
__u8 num_chipselect;
} __packed;
struct gb_spi_device_config_request {
__u8 chip_select;
} __packed;
struct gb_spi_device_config_response {
__le16 mode;
__u8 bits_per_word;
__le32 max_speed_hz;
__u8 name[32];
} __packed;
/**
* struct gb_spi_transfer - a read/write buffer pair
* @speed_hz: Select a speed other than the device default for this transfer. If
* 0 the default (from @spi_device) is used.
* @len: size of rx and tx buffers (in bytes)
* @delay_usecs: microseconds to delay after this transfer before (optionally)
* changing the chipselect status, then starting the next transfer or
* completing this spi_message.
* @cs_change: affects chipselect after this transfer completes
* @bits_per_word: select a bits_per_word other than the device default for this
* transfer. If 0 the default (from @spi_device) is used.
*/
struct gb_spi_transfer {
__le32 speed_hz;
__le32 len;
__le16 delay_usecs;
__u8 cs_change;
__u8 bits_per_word;
__u8 rdwr;
#define GB_SPI_XFER_READ 0x01
#define GB_SPI_XFER_WRITE 0x02
} __packed;
struct gb_spi_transfer_request {
__u8 chip_select; /* of the spi device */
__u8 mode; /* of the spi device */
__le16 count;
struct gb_spi_transfer transfers[0]; /* count of these */
} __packed;
struct gb_spi_transfer_response {
__u8 data[0]; /* inbound data */
} __packed;
/* Version of the Greybus SVC protocol we support */
#define GB_SVC_VERSION_MAJOR 0x00
#define GB_SVC_VERSION_MINOR 0x01
/* Greybus SVC request types */
#define GB_SVC_TYPE_SVC_HELLO 0x02
#define GB_SVC_TYPE_INTF_DEVICE_ID 0x03
#define GB_SVC_TYPE_INTF_HOTPLUG 0x04
#define GB_SVC_TYPE_INTF_HOT_UNPLUG 0x05
#define GB_SVC_TYPE_INTF_RESET 0x06
#define GB_SVC_TYPE_CONN_CREATE 0x07
#define GB_SVC_TYPE_CONN_DESTROY 0x08
#define GB_SVC_TYPE_DME_PEER_GET 0x09
#define GB_SVC_TYPE_DME_PEER_SET 0x0a
#define GB_SVC_TYPE_ROUTE_CREATE 0x0b
#define GB_SVC_TYPE_ROUTE_DESTROY 0x0c
#define GB_SVC_TYPE_INTF_SET_PWRM 0x10
#define GB_SVC_TYPE_INTF_EJECT 0x11
#define GB_SVC_TYPE_KEY_EVENT 0x12
#define GB_SVC_TYPE_PING 0x13
/*
* SVC version request/response has the same payload as
* gb_protocol_version_request/response.
*/
/* SVC protocol hello request */
struct gb_svc_hello_request {
__le16 endo_id;
__u8 interface_id;
} __packed;
/* hello response has no payload */
struct gb_svc_intf_device_id_request {
__u8 intf_id;
__u8 device_id;
} __packed;
/* device id response has no payload */
struct gb_svc_intf_hotplug_request {
__u8 intf_id;
struct {
__le32 ddbl1_mfr_id;
__le32 ddbl1_prod_id;
__le32 ara_vend_id;
__le32 ara_prod_id;
__le64 serial_number;
} data;
} __packed;
/* hotplug response has no payload */
struct gb_svc_intf_hot_unplug_request {
__u8 intf_id;
} __packed;
/* hot unplug response has no payload */
struct gb_svc_intf_reset_request {
__u8 intf_id;
} __packed;
/* interface reset response has no payload */
#define GB_SVC_EJECT_TIME 9000
struct gb_svc_intf_eject_request {
__u8 intf_id;
} __packed;
/* interface eject response has no payload */
struct gb_svc_conn_create_request {
__u8 intf1_id;
__le16 cport1_id;
__u8 intf2_id;
__le16 cport2_id;
__u8 tc;
__u8 flags;
} __packed;
/* connection create response has no payload */
struct gb_svc_conn_destroy_request {
__u8 intf1_id;
__le16 cport1_id;
__u8 intf2_id;
__le16 cport2_id;
} __packed;
/* connection destroy response has no payload */
struct gb_svc_dme_peer_get_request {
__u8 intf_id;
__le16 attr;
__le16 selector;
} __packed;
struct gb_svc_dme_peer_get_response {
__le16 result_code;
__le32 attr_value;
} __packed;
struct gb_svc_dme_peer_set_request {
__u8 intf_id;
__le16 attr;
__le16 selector;
__le32 value;
} __packed;
struct gb_svc_dme_peer_set_response {
__le16 result_code;
} __packed;
/* Attributes for peer get/set operations */
#define DME_ATTR_SELECTOR_INDEX 0
/* FIXME: remove ES2 support and DME_ATTR_T_TST_SRC_INCREMENT */
#define DME_ATTR_T_TST_SRC_INCREMENT 0x4083
#define DME_ATTR_ES3_INIT_STATUS 0x6101
/* Return value from init-status attributes listed above */
#define DME_DIS_SPI_BOOT_STARTED 0x02
#define DME_DIS_TRUSTED_SPI_BOOT_FINISHED 0x03
#define DME_DIS_UNTRUSTED_SPI_BOOT_FINISHED 0x04
#define DME_DIS_UNIPRO_BOOT_STARTED 0x06
#define DME_DIS_FALLBACK_UNIPRO_BOOT_STARTED 0x09
struct gb_svc_route_create_request {
__u8 intf1_id;
__u8 dev1_id;
__u8 intf2_id;
__u8 dev2_id;
} __packed;
/* route create response has no payload */
struct gb_svc_route_destroy_request {
__u8 intf1_id;
__u8 intf2_id;
} __packed;
/* route destroy response has no payload */
#define GB_SVC_UNIPRO_FAST_MODE 0x01
#define GB_SVC_UNIPRO_SLOW_MODE 0x02
#define GB_SVC_UNIPRO_FAST_AUTO_MODE 0x04
#define GB_SVC_UNIPRO_SLOW_AUTO_MODE 0x05
#define GB_SVC_UNIPRO_MODE_UNCHANGED 0x07
#define GB_SVC_UNIPRO_HIBERNATE_MODE 0x11
#define GB_SVC_UNIPRO_OFF_MODE 0x12
#define GB_SVC_PWRM_RXTERMINATION 0x01
#define GB_SVC_PWRM_TXTERMINATION 0x02
#define GB_SVC_PWRM_LINE_RESET 0x04
#define GB_SVC_PWRM_SCRAMBLING 0x20
#define GB_SVC_PWRM_QUIRK_HSSER 0x00000001
#define GB_SVC_UNIPRO_HS_SERIES_A 0x01
#define GB_SVC_UNIPRO_HS_SERIES_B 0x02
struct gb_svc_intf_set_pwrm_request {
__u8 intf_id;
__u8 hs_series;
__u8 tx_mode;
__u8 tx_gear;
__u8 tx_nlanes;
__u8 rx_mode;
__u8 rx_gear;
__u8 rx_nlanes;
__u8 flags;
__le32 quirks;
} __packed;
struct gb_svc_intf_set_pwrm_response {
__le16 result_code;
} __packed;
struct gb_svc_key_event_request {
__le16 key_code;
#define GB_KEYCODE_ARA 0x00
__u8 key_event;
#define GB_SVC_KEY_RELEASED 0x00
#define GB_SVC_KEY_PRESSED 0x01
} __packed;
/* RAW */
/* Version of the Greybus raw protocol we support */
#define GB_RAW_VERSION_MAJOR 0x00
#define GB_RAW_VERSION_MINOR 0x01
/* Greybus raw request types */
#define GB_RAW_TYPE_SEND 0x02
struct gb_raw_send_request {
__le32 len;
__u8 data[0];
} __packed;
/* UART */
/* Version of the Greybus UART protocol we support */
#define GB_UART_VERSION_MAJOR 0x00
#define GB_UART_VERSION_MINOR 0x01
/* Greybus UART operation types */
#define GB_UART_TYPE_SEND_DATA 0x02
#define GB_UART_TYPE_RECEIVE_DATA 0x03 /* Unsolicited data */
#define GB_UART_TYPE_SET_LINE_CODING 0x04
#define GB_UART_TYPE_SET_CONTROL_LINE_STATE 0x05
#define GB_UART_TYPE_SEND_BREAK 0x06
#define GB_UART_TYPE_SERIAL_STATE 0x07 /* Unsolicited data */
/* Represents data from AP -> Module */
struct gb_uart_send_data_request {
__le16 size;
__u8 data[0];
} __packed;
/* recv-data-request flags */
#define GB_UART_RECV_FLAG_FRAMING 0x01 /* Framing error */
#define GB_UART_RECV_FLAG_PARITY 0x02 /* Parity error */
#define GB_UART_RECV_FLAG_OVERRUN 0x04 /* Overrun error */
#define GB_UART_RECV_FLAG_BREAK 0x08 /* Break */
/* Represents data from Module -> AP */
struct gb_uart_recv_data_request {
__le16 size;
__u8 flags;
__u8 data[0];