regmap_read_bypassed(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

regmap_read_bypassed — bestie, this one reads a value from ONE single register, straight from the device, and it bypasses the cache entirely. no middleman, no stale copy, just vibes and silicon ✨

(this is a page from the Kernel API Manual, just so u know where u are 🫶)

🌸 SYNOPSIS 🌸

int regmap_read_bypassed (struct regmap *map , unsigned int reg ,
       unsigned int *val );

🎀 ARGUMENTS 🎀

  • map — the register map you're reading from, your main character struct 💅
  • reg — the register being read, like which little slot we're snooping on 👀
  • val — pointer to store the read value in, that's where the answer goes 🍓

🦋 DESCRIPTION 🦋

okay so here's the deal: a value of zero gets returned on success (slay), and a negative errno comes back in the error cases (not slay, but informative 😭).

and remember, this bad boy is bypassed — the cache isn't invited to this party, so you're getting the value direct from the device. no cap. 🔥

🌈 SEE ALSO 🌈

the whole friend group, gathered for u 💜

Kernel file ./drivers/base/regmap/regmap.c — plus literally all of these:

okay that's the whole page bestie, ily, go read ur registers 💖✨🎀

sign-off time: this gem lives under ./drivers/base/regmap, dated October 2026, straight outta the Kernel API Manual. periodt. 👑💅
📦 where this page comes from