drm_is_panel_follower(9)

💅 drm_is_panel_follower — bestie, is this device a panel follower?

okay so real quick, this page lives in the Kernel API Manual, and the function is literally called drm_is_panel_follower. The name kinda eats, ngl — it tells you exactly what it does. 🎀

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✨ SYNOPSIS ✨

bool drm_is_panel_follower (struct device *dev );

one function, one argument, returns a bool. clean. minimal. iconic. 🦋

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🌸 ARGUMENTS 🌸

• dev — the struct device you want to check. that's it, that's the whole argument. hand it over and let the function cook. 💅

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🧚 DESCRIPTION 🧚

so what this does: it checks whether a device needs to be power sequenced together with a panel, using the panel follower API. like, does this device have to wake up and go to sleep in sync with a panel? that's the vibe check it's running. ✨

and btw, the "panel" property of the follower points to the panel that's being followed — that's the link-up, iykyk. 🫶

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⭐ RETURN ⭐

• true — yes bestie, we should be power sequenced with a panel 💖
• false — nope, no panel sequencing for us 🙈

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👑 SEE ALSO 👑

the whole panel cinematic universe, fr fr:

• Kernel file ./drivers/gpu/drm/drm_panel.c
• drm panel(9)
• drm_panel_init(9)
• drm_panel_add(9)
• drm_panel_remove(9)
• devm_drm_panel_add(9)
• drm_panel_prepare(9)
• drm_panel_unprepare(9)
• drm_panel_enable(9)
• drm_panel_disable(9)
• drm_panel_get_modes(9)
• drm_panel_get(9)
• drm_panel_put(9)
• drm_panel_put_void(9)
• of_drm_find_panel(9)
• drm_panel_add_follower(9)
• drm_panel_remove_follower(9)
• devm_drm_panel_add_follower(9)
• drm_panel_of_backlight(9)

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lowkey the follower API is the friend group of the DRM world — everybody shows up in the SEE ALSO list. 🫶

aaaand that's the page!! source is ./drivers/gpu/drm, dated October 2026, so this info is fresh out the group chat — slay, go check your devices, and stay sequenced bestie 😭💜🎀