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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 */
/* Version of the Greybus control protocol we support */
#define GB_CONTROL_VERSION_MAJOR 0x00
#define GB_CONTROL_VERSION_MINOR 0x01
/* Greybus control request types */
#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
/* 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 */
/* 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_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 */
/* 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
/* 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 */
/* BATTERY */
/* Version of the Greybus battery protocol we support */
#define GB_BATTERY_VERSION_MAJOR 0x00
#define GB_BATTERY_VERSION_MINOR 0x01
/* Greybus battery request types */
#define GB_BATTERY_TYPE_TECHNOLOGY 0x02
#define GB_BATTERY_TYPE_STATUS 0x03
#define GB_BATTERY_TYPE_MAX_VOLTAGE 0x04
#define GB_BATTERY_TYPE_PERCENT_CAPACITY 0x05
#define GB_BATTERY_TYPE_TEMPERATURE 0x06
#define GB_BATTERY_TYPE_VOLTAGE 0x07
#define GB_BATTERY_TYPE_CURRENT 0x08
#define GB_BATTERY_TYPE_CAPACITY 0x09 // TODO - POWER_SUPPLY_PROP_CURRENT_MAX
#define GB_BATTERY_TYPE_SHUTDOWN_TEMP 0x0a // TODO - POWER_SUPPLY_PROP_TEMP_ALERT_MAX
/* Should match up with battery types in linux/power_supply.h */
#define GB_BATTERY_TECH_UNKNOWN 0x0000
#define GB_BATTERY_TECH_NiMH 0x0001
#define GB_BATTERY_TECH_LION 0x0002
#define GB_BATTERY_TECH_LIPO 0x0003
#define GB_BATTERY_TECH_LiFe 0x0004
#define GB_BATTERY_TECH_NiCd 0x0005
#define GB_BATTERY_TECH_LiMn 0x0006
struct gb_battery_technology_response {
__le32 technology;
} __packed;
/* Should match up with battery status in linux/power_supply.h */
#define GB_BATTERY_STATUS_UNKNOWN 0x0000
#define GB_BATTERY_STATUS_CHARGING 0x0001
#define GB_BATTERY_STATUS_DISCHARGING 0x0002
#define GB_BATTERY_STATUS_NOT_CHARGING 0x0003
#define GB_BATTERY_STATUS_FULL 0x0004
struct gb_battery_status_response {
__le16 battery_status;
} __packed;
struct gb_battery_max_voltage_response {
__le32 max_voltage;
} __packed;
struct gb_battery_capacity_response {
__le32 capacity;
} __packed;
struct gb_battery_temperature_response {
__le32 temperature;
} __packed;
struct gb_battery_voltage_response {
__le32 voltage;
} __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;
/* I2S */
#define GB_I2S_MGMT_TYPE_GET_SUPPORTED_CONFIGURATIONS 0x02
#define GB_I2S_MGMT_TYPE_SET_CONFIGURATION 0x03
#define GB_I2S_MGMT_TYPE_SET_SAMPLES_PER_MESSAGE 0x04
#define GB_I2S_MGMT_TYPE_GET_PROCESSING_DELAY 0x05
#define GB_I2S_MGMT_TYPE_SET_START_DELAY 0x06
#define GB_I2S_MGMT_TYPE_ACTIVATE_CPORT 0x07
#define GB_I2S_MGMT_TYPE_DEACTIVATE_CPORT 0x08
#define GB_I2S_MGMT_TYPE_REPORT_EVENT 0x09
#define GB_I2S_MGMT_BYTE_ORDER_NA BIT(0)
#define GB_I2S_MGMT_BYTE_ORDER_BE BIT(1)
#define GB_I2S_MGMT_BYTE_ORDER_LE BIT(2)
#define GB_I2S_MGMT_SPATIAL_LOCATION_FL BIT(0)
#define GB_I2S_MGMT_SPATIAL_LOCATION_FR BIT(1)
#define GB_I2S_MGMT_SPATIAL_LOCATION_FC BIT(2)
#define GB_I2S_MGMT_SPATIAL_LOCATION_LFE BIT(3)
#define GB_I2S_MGMT_SPATIAL_LOCATION_BL BIT(4)
#define GB_I2S_MGMT_SPATIAL_LOCATION_BR BIT(5)
#define GB_I2S_MGMT_SPATIAL_LOCATION_FLC BIT(6)
#define GB_I2S_MGMT_SPATIAL_LOCATION_FRC BIT(7)
#define GB_I2S_MGMT_SPATIAL_LOCATION_C BIT(8) /* BC in USB */
#define GB_I2S_MGMT_SPATIAL_LOCATION_SL BIT(9)
#define GB_I2S_MGMT_SPATIAL_LOCATION_SR BIT(10)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TC BIT(11)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TFL BIT(12)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TFC BIT(13)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TFR BIT(14)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TBL BIT(15)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TBC BIT(16)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TBR BIT(17)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TFLC BIT(18)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TFRC BIT(19)
#define GB_I2S_MGMT_SPATIAL_LOCATION_LLFE BIT(20)
#define GB_I2S_MGMT_SPATIAL_LOCATION_RLFE BIT(21)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TSL BIT(22)
#define GB_I2S_MGMT_SPATIAL_LOCATION_TSR BIT(23)
#define GB_I2S_MGMT_SPATIAL_LOCATION_BC BIT(24)
#define GB_I2S_MGMT_SPATIAL_LOCATION_BLC BIT(25)
#define GB_I2S_MGMT_SPATIAL_LOCATION_BRC BIT(26)
#define GB_I2S_MGMT_SPATIAL_LOCATION_RD BIT(31)
#define GB_I2S_MGMT_PROTOCOL_PCM BIT(0)
#define GB_I2S_MGMT_PROTOCOL_I2S BIT(1)
#define GB_I2S_MGMT_PROTOCOL_LR_STEREO BIT(2)
#define GB_I2S_MGMT_ROLE_MASTER BIT(0)
#define GB_I2S_MGMT_ROLE_SLAVE BIT(1)
#define GB_I2S_MGMT_POLARITY_NORMAL BIT(0)
#define GB_I2S_MGMT_POLARITY_REVERSED BIT(1)
#define GB_I2S_MGMT_EDGE_RISING BIT(0)
#define GB_I2S_MGMT_EDGE_FALLING BIT(1)
#define GB_I2S_MGMT_EVENT_UNSPECIFIED 0x1
#define GB_I2S_MGMT_EVENT_HALT 0x2
#define GB_I2S_MGMT_EVENT_INTERNAL_ERROR 0x3
#define GB_I2S_MGMT_EVENT_PROTOCOL_ERROR 0x4
#define GB_I2S_MGMT_EVENT_FAILURE 0x5
#define GB_I2S_MGMT_EVENT_OUT_OF_SEQUENCE 0x6
#define GB_I2S_MGMT_EVENT_UNDERRUN 0x7
#define GB_I2S_MGMT_EVENT_OVERRUN 0x8
#define GB_I2S_MGMT_EVENT_CLOCKING 0x9
#define GB_I2S_MGMT_EVENT_DATA_LEN 0xa
struct gb_i2s_mgmt_configuration {
__le32 sample_frequency;
__u8 num_channels;
__u8 bytes_per_channel;
__u8 byte_order;
__u8 pad;
__le32 spatial_locations;
__le32 ll_protocol;
__u8 ll_mclk_role;
__u8 ll_bclk_role;
__u8 ll_wclk_role;
__u8 ll_wclk_polarity;
__u8 ll_wclk_change_edge;
__u8 ll_wclk_tx_edge;
__u8 ll_wclk_rx_edge;
__u8 ll_data_offset;
} __packed;
/* get supported configurations request has no payload */
struct gb_i2s_mgmt_get_supported_configurations_response {
__u8 config_count;
__u8 pad[3];
struct gb_i2s_mgmt_configuration config[0];
} __packed;
struct gb_i2s_mgmt_set_configuration_request {
struct gb_i2s_mgmt_configuration config;
} __packed;
/* set configuration response has no payload */
struct gb_i2s_mgmt_set_samples_per_message_request {
__le16 samples_per_message;
} __packed;
/* set samples per message response has no payload */
/* get processing request delay has no payload */
struct gb_i2s_mgmt_get_processing_delay_response {
__le32 microseconds;
} __packed;
struct gb_i2s_mgmt_set_start_delay_request {
__le32 microseconds;
} __packed;
/* set start delay response has no payload */
struct gb_i2s_mgmt_activate_cport_request {
__le16 cport;
} __packed;
/* activate cport response has no payload */
struct gb_i2s_mgmt_deactivate_cport_request {
__le16 cport;
} __packed;
/* deactivate cport response has no payload */
struct gb_i2s_mgmt_report_event_request {
__u8 event;
} __packed;
/* report event response has no payload */
#define GB_I2S_DATA_TYPE_SEND_DATA 0x02
struct gb_i2s_send_data_request {
__le32 sample_number;
__le32 size;
__u8 data[0];
} __packed;
/* send data has no response at all */
/* 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_MODE 0x02
#define GB_SPI_TYPE_FLAGS 0x03
#define GB_SPI_TYPE_BITS_PER_WORD_MASK 0x04
#define GB_SPI_TYPE_NUM_CHIPSELECT 0x05
#define GB_SPI_TYPE_TRANSFER 0x06
/* mode request has no payload */
struct gb_spi_mode_response {
__le16 mode;
} __packed;
/* flags request has no payload */
struct gb_spi_flags_response {
__le16 flags;
} __packed;
/* bits-per-word request has no payload */
struct gb_spi_bpw_response {
__le32 bits_per_word_mask;
} __packed;
/* num-chipselects request has no payload */
struct gb_spi_chipselect_response {
__le16 num_chipselect;
} __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;
} __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
/*
* 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 unipro_mfg_id;
__le32 unipro_prod_id;
__le32 ara_vend_id;
__le32 ara_prod_id;
} 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 */
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
#define DME_ATTR_T_TST_SRC_INCREMENT 0x4083
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 */
/* 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];
} __packed;
struct gb_uart_set_line_coding_request {
__le32 rate;
__u8 format;
#define GB_SERIAL_1_STOP_BITS 0
#define GB_SERIAL_1_5_STOP_BITS 1
#define GB_SERIAL_2_STOP_BITS 2
__u8 parity;
#define GB_SERIAL_NO_PARITY 0
#define GB_SERIAL_ODD_PARITY 1
#define GB_SERIAL_EVEN_PARITY 2
#define GB_SERIAL_MARK_PARITY 3
#define GB_SERIAL_SPACE_PARITY 4
__u8 data_bits;
} __packed;
/* output control lines */
#define GB_UART_CTRL_DTR 0x01
#define GB_UART_CTRL_RTS 0x02
struct gb_uart_set_control_line_state_request {
__u8 control;
} __packed;
struct gb_uart_set_break_request {
__u8 state;
} __packed;
/* input control lines and line errors */
#define GB_UART_CTRL_DCD 0x01
#define GB_UART_CTRL_DSR 0x02
#define GB_UART_CTRL_RI 0x04
struct gb_uart_serial_state_request {
__u8 control;
} __packed;
/* Loopback */
/* Version of the Greybus loopback protocol we support */
#define GB_LOOPBACK_VERSION_MAJOR 0x00
#define GB_LOOPBACK_VERSION_MINOR 0x01
/* Greybus loopback request types */
#define GB_LOOPBACK_TYPE_PING 0x02
#define GB_LOOPBACK_TYPE_TRANSFER 0x03
#define GB_LOOPBACK_TYPE_SINK 0x04
struct gb_loopback_transfer_request {
__le32 len;
__u8 data[0];
} __packed;
struct gb_loopback_transfer_response {
__le32 len;
__u8 data[0];
} __packed;
/* SDIO */
/* Version of the Greybus sdio protocol we support */
#define GB_SDIO_VERSION_MAJOR 0x00
#define GB_SDIO_VERSION_MINOR 0x01
/* Greybus SDIO operation types */
#define GB_SDIO_TYPE_GET_CAPABILITIES 0x02
#define GB_SDIO_TYPE_SET_IOS 0x03
#define GB_SDIO_TYPE_COMMAND 0x04
#define GB_SDIO_TYPE_TRANSFER 0x05
#define GB_SDIO_TYPE_EVENT 0x06
/* get caps response: request has no payload */
struct gb_sdio_get_caps_response {
__le32 caps;
#define GB_SDIO_CAP_NONREMOVABLE 0x00000001
#define GB_SDIO_CAP_4_BIT_DATA 0x00000002
#define GB_SDIO_CAP_8_BIT_DATA 0x00000004
#define GB_SDIO_CAP_MMC_HS 0x00000008
#define GB_SDIO_CAP_SD_HS 0x00000010
#define GB_SDIO_CAP_ERASE 0x00000020
#define GB_SDIO_CAP_1_2V_DDR 0x00000040
#define GB_SDIO_CAP_1_8V_DDR 0x00000080
#define GB_SDIO_CAP_POWER_OFF_CARD 0x00000100
#define GB_SDIO_CAP_UHS_SDR12 0x00000200
#define GB_SDIO_CAP_UHS_SDR25 0x00000400
#define GB_SDIO_CAP_UHS_SDR50 0x00000800
#define GB_SDIO_CAP_UHS_SDR104 0x00001000
#define GB_SDIO_CAP_UHS_DDR50 0x00002000
#define GB_SDIO_CAP_DRIVER_TYPE_A 0x00004000
#define GB_SDIO_CAP_DRIVER_TYPE_C 0x00008000
#define GB_SDIO_CAP_DRIVER_TYPE_D 0x00010000
#define GB_SDIO_CAP_HS200_1_2V 0x00020000
#define GB_SDIO_CAP_HS200_1_8V 0x00040000
#define GB_SDIO_CAP_HS400_1_2V 0x00080000
#define GB_SDIO_CAP_HS400_1_8V 0x00100000
/* see possible values below at vdd */
__le32 ocr;
__le16 max_blk_count;
__le16 max_blk_size;
} __packed;
/* set ios request: response has no payload */