__tcs_buffer_write(9)

💅 __tcs_buffer_write(9) — like, the kernel API manual bestie 🎀

okay so this page lives in the Kernel API Manual (section 9, function girlies only ✨) and it's all about __tcs_buffer_write. let's get into it 🫶

✨ NAME ✨

__tcs_buffer_write — write to TCS hardware from a request; don't trigger. like, you're staging the vibe, not sending it 💅

🌸 SYNOPSIS 🌸

void __tcs_buffer_write (struct rsc_drv *drv , int tcs_id , int cmd_id ,
       const struct tcs_request *msg );

🦋 ARGUMENTS 🦋

• drv — the controller. the main character, fr. 👑
• tcs_id — the global ID of this TCS. its little passport number 🛂
• cmd_id — the index within the TCS to start writing. where in the lineup we start 🎬
• msg — the message we wanna send, which will contain several addr/data pairs to program (but few enough that they all fit in one TCS). like packing a carry-on — cute, but there's a limit 🙂‍↕️

💖 DESCRIPTION 💖

this one's used for all types of transfers — active, sleep, and wake. all of them. periodt 🫶

⭐ SEE ALSO ⭐

kernel file ./drivers/soc/qcom/rpmh-rsc.c — go read her, she ate 🔥

• tcs_invalidate(9)
• rpmh_rsc_invalidate(9)
• get_tcs_for_msg(9)
• get_req_from_tcs(9)
• __tcs_set_trigger(9)
• enable_tcs_irq(9)
• tcs_tx_done(9)
• check_for_req_inflight(9)
• find_free_tcs(9)
• claim_tcs_for_req(9)
• rpmh_rsc_send_data(9)
• find_slots(9)
• rpmh_rsc_write_ctrl_data(9)
• rpmh_rsc_ctrlr_is_busy(9)
• rpmh_rsc_write_next_wakeup(9)
• rpmh_rsc_cpu_pm_callback(9)
• rpmh_rsc_pd_callback(9)

ngl bestie, that whole cast of characters is a whole friend group — go say hi to each one 🧚

and that's the page!! mwah 💋 sourced straight from ./drivers/soc/qcom, dated October 2026 — no cap, see u next time 🌈💜