drm_for_each_encoder_mask(9)

💖 drm_for_each_encoder_mask — bestie's guide to looping encoders (from the Kernel API Manual, no cap) 💖

Ok so picture this: you're deep in DRM land, you've got a bitmask, and you need to hit up every encoder it points at. That's the whole vibe of drm_for_each_encoder_mask(9). It's a macro, it's a loop, it's lowkey iconic. Let's get into it 🫶

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✨ NAME ✨

drm_for_each_encoder_mask — iterate over encoders specified by bitmask. That's it, that's the function. She loops, she iterates, she slays 💅

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🌸 SYNOPSIS 🌸

drm_for_each_encoder_mask (encoder , dev , encoder_mask );

Literally just drop it in your code like this, exactly like this, don't touch the spacing, she's sensitive 🎀

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🦋 ARGUMENTS 🦋

• encoder — the loop cursor, bestie. This is the variable that gets filled in fresh on every spin around the loop. She's the main character of your for loop 👑
• dev — the DRM device. Your whole graphics situation. The big one. You know her 🖥️
• encoder_mask — bitmask of encoder indices. Bit i set means encoder i is invited to the party 🎉 Each set bit = one loop iteration.

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💜 DESCRIPTION 💜

Iterate over all encoders specified by bitmask. That's the entire description and honestly? She ate. No notes. It does exactly one thing and it does it well: for every encoder index that's turned on in encoder_mask, your loop body runs with encoder pointing at that encoder. Periodt. 🔥

fr fr, this is a macro — make sure encoder, dev, and encoder_mask are all ready to go before you enter the loop, because she's not doing any setup for you 🙈

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🌈 SEE ALSO 🌈

The whole friend group, all linked from the kernel file ./include/drm/drm_encoder.h:

• struct drm_encoder_funcs(9)
• struct drm_encoder(9)
• drmm_encoder_alloc(9)
• drmm_plain_encoder_alloc(9)
• drm_encoder_index(9)
• drm_encoder_mask(9)
• drm_encoder_crtc_ok(9)
• drm_encoder_find(9)
• drm_for_each_encoder(9)

Go read them, they're all baddies too, iykyk 💖

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That's the whole page, bestie! 🧚 Sending you off with a little sign-off: this one lives under ./include/drm, dated October 2026, and it's titled drm_for_each_encoder_mask(9) — so now you can cite her with confidence. Go loop those encoders, you absolute icon ⭐🎀