cdns_find_pdi(9)

📦 version 7.3.1, in nixpkgs unstable

💫 cdns_find_pdi — bestie's guide to finding a free PDI 💫

okay so this is a page from the Kernel API Manual, and honestly? it's short, it's sweet, and it's giving "tiny function, big responsibilities." let's get into it 🫶

🌸 NAME 🌸

cdns_find_pdi — Find a free PDI ✨

like, that's literally the whole job. it finds you a free PDI. iconic behavior.

🦋 SYNOPSIS 🦋

struct sdw_cdns_pdi * cdns_find_pdi (struct sdw_cdns *cdns , unsigned
int num , struct sdw_cdns_pdi *pdi , int dai_id );

she takes four arguments and returns a pointer to a struct sdw_cdns_pdi — and yes, she can absolutely hand you NULL back, we'll get to that 👀

🎀 ARGUMENTS 🎀

  • cdns — the Cadence instance 💜 like, the whole vibe you're working inside
  • num — Number of PDIs 🔢
  • pdi — the PDI instances themselves 🧚 your little array of candidates
  • dai_id — DAI id 🎫 the identifier you're matching against

⭐ DESCRIPTION ⭐

so here's the tea ☕ — cdns_find_pdi finds a PDI for a given PDI array. that's the whole mission.

but here's the important bit, and i need you to hear me on this one: the PDI num and dai_id are expected to match. if they don't match? it returns NULL. no PDI for you, bestie. 💀

lowkey a vibe check for your arguments — mismatch and you get nothing back. keep num and dai_id in agreement or don't come crying to me 😭

👑 SEE ALSO 👑

the kernel file lives right here, no cap:

./drivers/soundwire/cadence_master.c

and here's the whole friend group, every single one of them, not skipping a single bestie 💅

and that's the whole page, bestie!! 💖✨🎀🦋🌸

this lil masterpiece comes from ./drivers/soundwire and it's dated October 2026 — so yeah, mark your calendars, she's timeless fr fr 🫶👑

📦 where this page comes from