sprd_mcdt_chan_int_enable(9)

📦 version 7.3.1, in nixpkgs unstable

✨ sprd_mcdt_chan_int_enable ✨

okay so bestie, welcome to the Kernel API Manual entry for sprd_mcdt_chan_int_enable(9) — this is the function that flips a MCDT channel into interrupt mode and honestly it's giving main character energy for the ADC/DAC pipeline 💅

🌸 NAME 🌸

sprd_mcdt_chan_int_enable — enable the interrupt mode for the MCDT channel 🎀

🦋 SYNOPSIS 🦋

int sprd_mcdt_chan_int_enable (struct sprd_mcdt_chan *chan , u32
water_mark , struct sprd_mcdt_chan_callback *cb );

that's the whole signature, no cap — copy it exactly, she does not play about her argument order 💖

✨ ARGUMENTS ✨

  • chan — the MCDT channel. your little guy. the one you're enabling 💫
  • water_mark — water mark to trigger a interrupt 🌊 like, this is the level that makes the interrupt pop off
  • cb — callback when a interrupt happened 📞 the function that gets pinged once the interrupt actually goes down

🔥 DESCRIPTION 🔥

lowkey important context: right now it only can enable fifo almost full interrupt for ADC channel and fifo almost empty interrupt for DAC channel. that's the current state of things, fr fr — not a wishlist, just the facts 🫶

moreover (yes, "moreover", we're being fancy today ✨) for interrupt mode, user should use sprd_mcdt_chan_read or sprd_mcdt_chan_write to read or write data manually. no auto-pilot, you're driving 🚗💨

for ADC channel, user can start to read data once receiving one fifo full interrupt 👑 for DAC channel, user can start to write data once receiving one fifo empty interrupt or just call sprd_mcdt_chan_write to write data directly — either vibe works, pick your lane 🌈

returns 0 on success, or an error code on failure 😭 (yes the classic 0-means-good, negative-means-sad situation)

👑 SEE ALSO 👑

kernel file ./sound/soc/sprd/sprd-mcdt.c and her besties:

go read them, iykyk 📚💜

ngl bestie, if you enable interrupt mode and then forget to actually call sprd_mcdt_chan_read / sprd_mcdt_chan_write yourself, nothing's gonna happen — the manual is literally telling you it's manual 🙈

that's the whole page! sourced from ./sound/soc/sprd, dated October 2026, and it lives in that Kernel API Manual we mentioned up top 🌸 slay, go enable some interrupts, periodt 💅✨

📦 where this page comes from