smu7_fan_ct...an_speed_rpm(9)

📦 version 7.3.1, in nixpkgs unstable

💜 smu7_fan_ctrl_set_fan_speed_rpm — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual 🎀 and lemme tell you, this page is literally a tiny one but it's giving main character energy because it's the little function that makes your GPU's fan actually spin at the speed you asked for. no cap. 🔥

✨ NAME ✨

smu7_fan_ctrl_set_fan_speed_rpm — Set Fan Speed in RPM. 🌀

like, that's it. that's the whole job. it sets the fan speed. in RPM. icon behavior, honestly. 💅

🌸 SYNOPSIS 🌸

int smu7_fan_ctrl_set_fan_speed_rpm (struct pp_hwmgr *hwmgr , uint32_t speed );

so it hands you back an int — classic — and it takes two things: a struct pp_hwmgr *hwmgr and a uint32_t speed. she's simple. she's focused. she knows what she wants. 👑

🦋 ARGUMENTS 🦋

  • hwmgr — this is the address of the powerplay hardware manager. like, the whole powerplay situation lives in here, and you're passing her the addy so she knows where to go. 🫶
  • speed — this is the percentage value (min - max) to be set. yeah, percentage, we love a units moment 🙈. Exception: it fails if the speed does not lie between min and max. so pls, do not come in here with an out-of-range number, bestie, because it will Not Work. 💀 that's the vibe check, literally.
⚠️ heads up: out-of-range speed → fail. no negotiation, no sliding scale, no "close enough". the bounds are the bounds. 😭

⭐ SEE ALSO ⭐

okay the little kernel file this whole situation lives in is:

./drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c

and here's the whole friend group of related calls — go say hi, they all hang out together 🌈:

and that's the whole page, babe 💖 she's short, she's sweet, she spins fans. sign-off time: this little gem comes from ./drivers/gpu/drm/amd/pm/power..., dated October 2026, and she answers to the name smu7_fan_ct...an_speed_rpm(9). periodt. 🌸✨🦋

📦 where this page comes from