cros_ec_usb_get_role(9)

💅 cros_ec_usb_get_role(9) — from the Kernel API Manual, bestie

okay so picture this: you're poking at the ChromeOS EC (that's the embedded controller, the little guy running the show on Chromebooks) and you want the tea on whatever USB-C PD device might be plugged into a port. This function? It gets you that tea. It's cros_ec_usb_get_role, and it's giving "tell me everything about the port" energy. ✨

✨ SYNOPSIS ✨

int cros_ec_usb_get_role (struct cros_ec_extcon_info *info , bool
*polarity );

🎀 ARGUMENTS 🎀

• info — a pointer to struct cros_ec_extcon_info. That's your extcon info struct, your whole context, your main character. 🫶
• polarity — a pointer to cable polarity, and heads up bestie, this one is a return value — the function writes the polarity back out through it. 👑

🔥 RETURN 🔥

• On success you get the role info back. slay. 💖
• If there's no cable connected, it's -ENOTCONN — literally nothing plugged in, sad little port, no vibe. 😭
• Anything else <0? That's a failure, ngl. Something went wrong.

🦋 SEE ALSO 🦋

• Kernel file ./drivers/extcon/extcon-usbc-cros-ec.c — go read the source, iykyk 📖
• cros_ec_pd_command(9)
• cros_ec_usb_get_power_type(9)
• cros_ec_usb_get_pd_mux_state(9)
• cros_ec_pd_get_num_ports(9)

and that's the whole page, periodt. 🧚 this lil gem lives in ./drivers/extcon and it's dated October 2026 — no cap, that's the version and the date, so jot it down bestie. 🌸💜