pwm_config(9)

💖 pwm_config(9) — aka the Kernel API Manual glow-up 💖

Okay bestie, welcome to the pwm_config page from the Kernel API Manual, section 9. Buckle up, this one's short but it matters. ✨

🎀 NAME 🎀

pwm_config — change a PWM device configuration. That's it, that's the whole vibe. She tweaks the setup on a PWM device, and honestly? Iconic. 👑

✨ SYNOPSIS ✨

int pwm_config (struct pwm_device *pwm , int duty_ns , int period_ns );

Three args, one int coming back at you. Simple. Clean. No cap. 🫶

🌸 ARGUMENTS 🌸

• pwm — the PWM device itself. Like, the actual thing you're configuring. Your main character. 💅
• duty_ns — the "on" time, measured in nanoseconds. So like, how long the signal stays high. Ngl, nanosecond precision is such a flex. ⭐
• period_ns — how long one whole cycle lasts, also in nanoseconds. One full lap around the sun, but make it a signal. 🔥

🌈 RETURN 🌈

You get 0 on success — slay, everything worked 💖 — or a negative error code on failure. If you see a negative number, that's your vibe check failing, bestie. 😭

🦋 SEE ALSO 🦋

So many friends in the ./include/linux/pwm.h kernel file, and they all ate:

• 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_get_relative_duty_cycle(9)
• pwm_set_relative_duty_cycle(9)
• struct pwm_capture(9)
• struct pwm_ops(9)
• struct pwm_chip(9)
• pwmchip_supports_waveform(9)
• pwm_enable(9)
• pwm_disable(9)
• pwm_might_sleep(9)

Go read them. Seriously. They're giving lore. 📚✨

That's the whole page, bestie — short, sweet, and fully sourced from ./include/linux, dated October 2026. Periodt. 💜🎀