smu7_fan_ct...an_speed_pwm(9)

💅 smu7_fan_ctrl_set_fan_speed_pwm — Kernel API Manual ✨

okay bestie, so this one lives in the Kernel API Manual (yes, that's the whole manual name, we're being fancy today 🎀) and it's literally the function that lets you tell a GPU fan how hard to spin, in PWM terms. Fan control era. Let's get into it 🦋

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🌸 NAME 🌸

smu7_fan_ctrl_set_fan_speed_pwm — Set Fan Speed in PWM. that's it, that's the whole job, and it ate 💅

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✨ SYNOPSIS ✨

int smu7_fan_ctrl_set_fan_speed_pwm (struct pp_hwmgr *hwmgr , uint32_t
speed );

like, look at her. returns an int, takes a struct pp_hwmgr *hwmgr and a uint32_t speed. iconic signature, no notes 👑

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🫶 ARGUMENTS 🫶

• hwmgr — the address of the powerplay hardware manager. think of it as the main character of this whole operation, you hand it over and the function knows who it's talking to 💖
• speed — is the pwm value (0 - 255) to be set. that's the range, bestie — 0 to 255, no cap, don't go outside it 🙈

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🔥 SEE ALSO 🔥

the lore is deep on this one, so here's the whole friend group 🧚:

• Kernel file ./drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c
• smu7_fan_ctrl_set_static_mode(9)
• smu7_fan_ctrl_set_default_mode(9)
• smu7_fan_ctrl_reset_fan_speed_to_default(9)
• smu7_fan_ctrl_set_fan_speed_rpm(9)
• smu7_thermal_get_temperature(9)
• smu7_thermal_set_temperature_range(9)
• smu7_thermal_initialize(9)
• smu7_thermal_enable_alert(9)
• smu7_thermal_disable_alert(9)
• smu7_thermal_stop_thermal_controller(9)
• smu7_thermal_start_smc_fan_control(9)

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ngl, go read the neighbours too — smu7_fan_ctrl_set_fan_speed_rpm(9) is the rpm version if pwm isn't your vibe 🌈

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and that's the page, bestie 💜 this little number came from ./drivers/gpu/drm/amd/pm/power... and it's stamped October 2026, so like… future icon behaviour fr fr. slay, stay cool (literally), and may your fans never run at the wrong pwm 🍓✨