/*
* Greybus device descriptor definition
*
* Defined in the "Greybus Application Protocol" document.
* See that document for any details on these values and structures.
*
* Copyright 2014 Google Inc.
*/
#ifndef __GREYBUS_DESC_H
#define __GREYBUS_DESC_H
struct greybus_descriptor_block_header {
__le16 size;
__u8 version_major;
__u8 version_minor;
};
enum greybus_descriptor_type {
GREYBUS_TYPE_INVALID = 0x0000,
GREYBUS_TYPE_FUNCTION = 0x0001,
GREYBUS_TYPE_MODULE_ID = 0x0002,
GREYBUS_TYPE_SERIAL_NUMBER = 0x0003,
GREYBUS_TYPE_STRING = 0x0004,
GREYBUS_TYPE_CPORT = 0x0005,
};
struct greybus_descriptor_header {
__le16 size;
__le16 type; /* enum greybus_descriptor_type */
};
enum greybus_function_class {
GREYBUS_FUNCTION_CONTROL = 0x00,
GREYBUS_FUNCTION_USB = 0x01,
GREYBUS_FUNCTION_GPIO = 0x02,
GREYBUS_FUNCTION_SPI = 0x03,
GREYBUS_FUNCTION_UART = 0x04,
GREYBUS_FUNCTION_PWM = 0x05,
GREYBUS_FUNCTION_I2S = 0x06,
GREYBUS_FUNCTION_I2C = 0x07,
GREYBUS_FUNCTION_SDIO = 0x08,
GREYBUS_FUNCTION_HID = 0x09,
GREYBUS_FUNCTION_DISPLAY = 0x0a,
GREYBUS_FUNCTION_CAMERA = 0x0b,
GREYBUS_FUNCTION_SENSOR = 0x0c,
GREYBUS_FUNCTION_VENDOR = 0xff,
};
struct greybus_descriptor_function {
__le16 number;
__le16 cport;
__u8 class; /* enum greybus_function_class */
__u8 subclass;
__u8 protocol;
__u8 reserved;
};
struct greybus_descriptor_module_id {
__le16 vendor;
__le16 product;
__le16 version;
__u8 vendor_stringid;
__u8 product_stringid;
};
struct greybus_descriptor_serial_number {
__le64 serial_number;
};
struct greybus_descriptor_string {
__le16 length;
__u8 id;
__u8 string[0];
};
struct greybus_descriptor_cport {
__le16 number;
__le16 size;
__u8 speed; // FIXME
__u8 reserved;
};
struct greybus_descriptor {
struct greybus_descriptor_header header;
union {
struct greybus_descriptor_function function;
struct greybus_descriptor_module_id module_id;
struct greybus_descriptor_serial_number serial_number;
struct greybus_descriptor_string string;
struct greybus_descriptor_cport cport;
};
};
#endif /* __GREYBUS_DESC_H */
