pwm_get_relative_duty_cycle(9)

💖 pwm_get_relative_duty_cycle(9) 💖

okay bestie, welcome to the Kernel API Manual — this one is lowkey a little utility icon and we’re gonna get into it 💅

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🌸 NAME 🌸

pwm_get_relative_duty_cycle — get a relative duty cycle value. that’s the whole vibe, periodt ✨

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🎀 SYNOPSIS 🎀

unsigned int pwm_get_relative_duty_cycle (const struct pwm_state *state
       , unsigned int scale );

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🦋 ARGUMENTS 🦋

• state — the PWM state you’re extracting the duty cycle from 🫶
• scale — the target scale of the relative duty cycle, no cap 💫

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✨ DESCRIPTION ✨

so this function converts the absolute duty cycle stored in state — which is expressed in nanosecond — into a value relative to the period. it’s literally giving “normalize my duty cycle” and honestly? iconic 😭💖

for example, if you want to get the duty_cycle expressed in percent, you call:

pwm_get_state(pwm, state); duty = pwm_get_relative_duty_cycle(state, 100);

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💖 RETURN 💖

you get the rounded relative duty cycle multiplied by scale — that’s the whole return-value moment, bestie ✨

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🔥 SEE ALSO 🔥

kernel file: ./include/linux/pwm.h — home base fr fr.

also the SEE ALSO squad is: enum pwm_polarity(9), struct pwm_args(9), struct pwm_waveform(9), struct pwm_device(9), pwm_get_state(9), pwm_init_state(9), pwm_set_relative_duty_cycle(9), struct pwm_capture(9), struct pwm_ops(9), struct pwm_chip(9), pwmchip_supports_waveform(9), pwm_config(9), pwm_enable(9), pwm_disable(9), pwm_might_sleep(9) 💜

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okay bye ily 💜 source/version: ./include/linux · date: October 2026 🎀