spmi_register_read(9)

📦 version 7.3.1, in nixpkgs unstable

✨ spmi_register_read — register read, but make it a vibe ✨

okay so bestie, you know how we're always talking about the Linux Kernel API Manual? yeah. this is one of those pages. it's spmi_register_read (section 9 of the kernel API manual, iykyk) and honestly it's giving "tiny function, big responsibility" energy. let's get into it 💅

🌸 NAME 🌸

spmi_register_read — register read. that's it. that's the whole name. short, sweet, and it does exactly what it says on the tin 🎀

✨ SYNOPSIS ✨

int spmi_register_read (struct spmi_device *sdev , u8 addr , u8 *buf );

like, look at her. three args, returns an int, no drama. 🦋

💖 ARGUMENTS 💖

  • sdev — the SPMI device, aka the main character of this whole operation 👑
  • addr — the slave register address. and bestie, note this: it's a 5-bit address. five. bits. not eight, not sixteen. five. don't come for me, that's literally what the page says 🫶
  • buf — the buffer that gets populated with the data coming from the Slave. it's the little bucket where the bytes land 🍓

🔥 DESCRIPTION 🔥

okay so here's the tea: this function reads 1 byte of data from a Slave device register. one byte. singular. not a block, not a chunk, not a whole page of vibes — literally one byte, that's the assignment and it ate 💀✨

🌈 SEE ALSO 🌈

the friend group! the whole squad! all of these live in the kernel file ./drivers/spmi/spmi.c and honestly they're all iconic in their own way:

go read them all, no cap, they're lowkey essential if you're doing SPMI stuff 🧚💜

and that's the whole page bestie! short, sweet, one byte at a time 🌸

sign-off time 🎀 this lil slice of kernel wisdom lives over in ./drivers/spmi, and it's stamped October 2026 — so yeah, mark your calendar, the spmi_register_read(9) page is out here being timeless. mwah 💋✨

📦 where this page comes from