regmap_bulk_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 regmap_bulk_write(9) 💅

okay so bestie, welcome to the regmap_bulk_write page from the Kernel API Manual — yes it's a section 9 manpage, yes it's about writing registers, and yes we're gonna make it make sense 🫶

✨ NAME ✨

regmap_bulk_write — Write multiple registers to the device 🎀

🌸 SYNOPSIS 🌸

int regmap_bulk_write (struct regmap *map , unsigned int reg , const
void *val , size_t val_count );

like, that's the whole signature, no cap 💖

🦋 ARGUMENTS 🦋

  • map — the register map you're writing to, your main character struct 👑
  • reg — the first register you're writing from (yes, "write from", that's what the page says, iykyk) ⭐
  • val — the block of data to be written, in the native register size for the device 🍓
  • val_count — how many registers you're writing, the count, the amount, the vibe check number 🔥

💜 DESCRIPTION 💜

So this function? It's literally built for writing a large block of data to the device — either in a single transfer or in multiple transfers. Either way, it's giving efficient ✨

A value of zero will be returned on success 🥳 a negative errno will be returned in error cases 😭 (as is tradition).

ngl bestie, always check that return value — 0 = slay, negative = something went wrong and you should care 💀

🌈 SEE ALSO 🌈

Kernel file ./drivers/base/regmap/regmap.c — go read it, it's iconic 📖

then the whole friend group, fr fr:

and that's the page!! 💅 this lil beauty lives in ./drivers/base/regmap, dated October 2026, and it's regmap_bulk_write(9) all the way through — go write some registers bestie, you got this 🧚💖

📦 where this page comes from