spmi_ext_register_read(9)

📦 version 7.3.1, in nixpkgs unstable

💅 spmi_ext_register_read — extended register read, bestie ✨

okay so this one is from the Kernel API Manual (that's the manual name, iykyk) and it's literally the extended register read function. super niche, super useful, we love her 💖

✨ SYNOPSIS ✨

int spmi_ext_register_read (struct spmi_device *sdev , u8 addr , u8 *buf
, size_t len );

like… it takes four things and gives you back an int. that's the whole vibe check 🫶

🎀 ARGUMENTS 🎀

  • sdev — your SPMI device. the main character of this whole operation 👑
  • addr — the slave register address, and it's an 8-bit address just so we're clear 💅
  • buf — the buffer that gets populated with data from the Slave. she gets filled up, that's her job 🍓
  • len — how many bytes you wanna read, up to 16 bytes. not 17. do not come at her with 17 🙈

🌸 DESCRIPTION 🌸

Reads up to 16 bytes of data from the extended register space on a Slave device.

that's it, that's the whole thing. no cap. up to 16 bytes, from the extended register space, on a Slave device. slay ✨

🦋 SEE ALSO 🦋

Kernel file ./drivers/spmi/spmi.c — go read it, it's giving source material 💜

like… look at that whole friend group. iconic. every single one of them. 🔥

ngl bestie, if you only remember one thing: 16 bytes max. that's the lore 💀

okay that's the page!! this one lives in ./drivers/spmi, dated October 2026, and it's spmi_ext_register_read(9) all day every day. mwah 💋 🌈 ⭐

📦 where this page comes from