STRUCT WILCO_EC_REQUEST(9)

💌 struct wilco_ec_request(9)

okay so this is a page from the Kernel API Manual — yes bestie, the kernel has lore too — and it's all about struct wilco_ec_request, aka the Mailbox request message format. it's giving "how to slide into the EC's DMs, formally" ✨

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🌸 NAME 🌸

struct wilco_ec_request — the Mailbox request message format. that's it, that's the whole vibe. 📨

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🎀 SYNOPSIS 🎀

struct wilco_ec_request {
    u8 struct_version;
    u8 checksum;
    u16 mailbox_id;
    u8 mailbox_version;
    u8 reserved;
    u16 data_size;
 };

look at her. six members. flawless layout. no notes. 💅

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🦋 Members 🦋

• struct_version — should be EC_MAILBOX_PROTO_VERSION. like, that's the assignment, don't freelance it. 📌
• checksum — the sum of all bytes has to be 0. all of them. every single one. yes this is a whole thing (iykyk). 🧮
• mailbox_id — the mailbox identifier, and it specifies the command set. basically the "which group chat am i in" field. 💬
• mailbox_version — the mailbox interface version, EC_MAILBOX_VERSION. keep it accurate bestie. 🏷️
• reserved — set to zero. that's it. zero. don't be creative. 🚫
• data_size — the length of the following data. how much data is coming after this. that's the whole job. 📏

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👑 SEE ALSO 👑

Kernel file ./include/linux/platform_data/wilco-ec.h, plus the whole friend group:

• struct wilco_ec_device(9)
• struct wilco_ec_response(9)
• enum wilco_ec_msg_type(9)
• struct wilco_ec_message(9)
• wilco_ec_mailbox(9)
• wilco_keyboard_leds_init(9)
• wilco_ec_get_property(9)
• wilco_ec_set_property(9)
• wilco_ec_get_byte_property(9)
• wilco_ec_add_sysfs(9)

go read them. they're all linked in the group chat. 🔗💖

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🧚 sign-off 🧚

this lil page lives at ./include/linux/platform_data, and it's dated October 2026 — yeah, the future. main character timeline fr. anyways, that's the page, struct wilco_ec_request(9), you ate, slay, periodt 🫶🌈⭐