typec_partne...num_altmodes(9)

✨ NAME ✨

ok so this page is typec_partne...num_altmodes(9) from the Kernel API Manual (the name got truncated in the header, bestie, but it's typec_partner_set_num_altmodes) — and it does exactly what it says on the tin: it sets the number of available partner altmodes 💅

🌸 SYNOPSIS 🌸

int typec_partner_set_num_altmodes (struct typec_partner *partner , int
num_altmodes );

🎀 ARGUMENTS 🎀

• partner — the partner we're updating, like the main character of this whole operation 🫶
• num_altmodes — the number of altmodes we want to specify as available ✨

🦋 DESCRIPTION 🦋

so here's the vibe: this routine is used to report the number of alternate modes supported by the partner. that's it, that's the job 💖

⚠️ and listen — this value is *not* enforced in alternate mode registration routines. like, it's purely a report, no cap. nobody's gonna come check your math at registration time 👀

partner.num_altmodes is set to -1 on partner registration, which means "a valid value has not been set for it yet" — a lil placeholder era, if you will 🙈

it returns 0 on success or a negative error number on failure. icon behavior, honestly 😌

🔥 SEE ALSO 🔥

okay bestie, buckle up, because this list is long — all of these live in the Kernel file ./drivers/usb/typec/class.c and they're all part of the same typec friend group 🌈

• typec_altmode_update_active(9)
• typec_altmode2port(9)
• typec_altmode_set_ops(9)
• typec_unregister_altmode(9)
• typec_partner_set_usb_mode(9)
• typec_partner_set_identity(9)
• typec_partner_set_pd_revision(9)
• typec_partner_set_usb_power_delivery(9)
• typec_partner_register_altmode(9)
• typec_partner_set_svdm_version(9)
• typec_partner_usb_power_delivery_register(9)
• typec_register_partner(9)
• typec_unregister_partner(9)
• typec_plug_set_num_altmodes(9)
• typec_plug_register_altmode(9)
• typec_register_plug(9)
• typec_unregister_plug(9)
• typec_cable_get(9)
• typec_cable_put(9)
• typec_cable_is_active(9)
• typec_cable_altmode_unsupported(9)
• typec_cable_set_identity(9)
• typec_register_cable(9)
• typec_unregister_cable(9)
• typec_port_set_usb_mode(9)
• typec_port_set_usb_power_delivery(9)
• typec_set_data_role(9)
• typec_get_data_role(9)
• typec_set_pwr_role(9)
• typec_set_vconn_role(9)
• typec_set_pwr_opmode(9)
• typec_find_pwr_opmode(9)
• typec_find_orientation(9)
• typec_find_port_power_role(9)
• typec_find_power_role(9)
• typec_find_port_data_role(9)
• typec_set_orientation(9)
• typec_get_orientation(9)
• typec_set_mode(9)
• typec_get_negotiated_svdm_version(9)
• typec_get_cable_svdm_version(9)
• typec_cable_set_svdm_version(9)
• typec_get_drvdata(9)
• typec_port_register_altmode(9)
• typec_port_register_cable_ops(9)
• typec_register_port(9)
• typec_unregister_port(9)

and that's the whole page, periodt 💜 this lil gem lives in ./drivers/usb/typec, dated October 2026, and yes the manual header and footer both say typec_partne...num_altmodes(9) because even manpages get truncated sometimes 😭 slay 🎀