rc_write_cfg(9)

🌸 NAME 🌸

okay bestie, meet rc_write_cfg(9) from the Kernel API Manual — the function whose whole job is literally Send configuration sequence. that's the name, that's the vibe, and it ate. ✨

✨ SYNOPSIS ✨

here's the signature, copied exactly because we do not play with code 💅

int rc_write_cfg (struct qcom_ramp_controller *qrc , const struct
reg_sequence *seq , u16 ce , u8 nsids );

💅 ARGUMENTS 💅

okay so the args are giving very specific, let's go one by one 🫶

• qrc (struct qcom_ramp_controller *) — Main driver structure. this is the main character struct fr.
• seq (const struct reg_sequence *) — Register sequence to send before asking for update. send the sequence, then ask for the update, periodt.
• ce (u16) — Configuration SID. that's the config SID, no cap.
• nsids (u8) — Total number of SIDs. the whole count of SIDs, slay.

🎀 RETURN 🎀

Zero for success or negative number for error. that's the return contract, bestie — 0 means success, negative means error. no extra lore. 😭

🦋 SEE ALSO 🦋

go touch these if you want the full lore: 🌈

• Kernel file ./drivers/soc/qcom/ramp_controller.c
• struct qcom_ramp_controller_desc(9)
• struct qcom_ramp_controller(9)
• rc_wait_for_update(9)
• rc_set_cfg_update(9)
• rc_ramp_ctrl_enable(9)
• qcom_ramp_controller_start(9)

that's the whole page! 🫶 source/version ./drivers/soc/qcom, date October 2026, manual rc_write_cfg(9) — bye bestie, slay your kernel journey 💖✨