drmm_kms_helper_poll_init(9)

💅 drmm_kms_helper_poll_init(9) — aka the Kernel API Manual page you're literally about to stan

okay so bestie, welcome to the glow-up edition of drmm_kms_helper_poll_init from the Kernel API Manual. yes that's a mouthful, no I will not be pronouncing it out loud, and yes it's giving "I memorized the DRM subsystem at 2am" energy. 🧚✨

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🌸 NAME 🌸

drmm_kms_helper_poll_init — initialize and enable output polling. that's it, that's the whole vibe. set it up, turn it on, let it do its thing. 💖

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✨ SYNOPSIS ✨

void drmm_kms_helper_poll_init (struct drm_device *dev );

one function, one pointer, zero drama. 🫶

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🎀 ARGUMENTS 🎀

• dev — a struct drm_device. that's your whole argument list, she's lowkey minimalist and honestly? iconic.

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🦋 DESCRIPTION 🦋

so here's the tea ☕ — this function initializes output polling support for dev and then also enables it, which is basically the two-step combo move. it works similar to drm_kms_helper_poll_init (note the extra m, bestie, they are not the same function, do not come for me 🙈).

the actually best part? the polling gets automatically cleaned up when the DRM device goes away. no manual teardown, no "oops I forgot to free it" moment, the drmm_ prefix is literally the main character here doing the cleanup for you. periodt. 👑

if you want more info, go read up on drm_kms_helper_poll_init — that's where the real lore lives. 📖

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🔥 SEE ALSO 🔥

the whole friend group, in the order the manpage introduced them:

• the kernel file ./drivers/gpu/drm/drm_probe_helper.c — output probing helper
• overview(9)
• drm_kms_helper_poll_enable(9)
• drm_kms_helper_poll_reschedule(9)
• drm_helper_probe_detect(9)
• drm_helper_probe_single_connector_modes(9)
• drm_kms_helper_hotplug_event(9)
• drm_kms_helper_connector_hotplug_event(9)
• drm_kms_helper_is_poll_worker(9)
• drm_kms_helper_poll_disable(9)
• drm_kms_helper_poll_init(9)
• drm_kms_helper_poll_fini(9)
• drm_connector_helper_hpd_irq_event(9)
• drm_helper_hpd_irq_event(9)
• drm_crtc_helper_mode_valid_fixed(9)
• drm_connector_helper_get_modes_fixed(9)
• drm_connector_helper_get_modes(9)
• drm_connector_helper_tv_get_modes(9)
• drm_connector_helper_detect_from_ddc(9)

like, say less, the whole squad showed up. 🌈⭐

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ngl this one's short and sweet — the drmm_ prefix means you get managed cleanup for free, so don't go writing your own teardown code and then wondering why everything's on fire 💀

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and that's a wrap, bestie! 🎀 this lil page lives in ./drivers/gpu/drm, it's dated October 2026, and it came to you courtesy of the Kernel API Manual — iykyk. go poll some outputs responsibly. 🦋💜