DRM_MODE_RES_MM(9)

💖 DRM_MODE_RES_MM(9) 💖

okay so welcome to the Kernel API Manual, bestie — this is the page for DRM_MODE_RES_MM(9), and it is literally the little helper that calculates the display size from resolution and DPI. ✨ It’s giving “small function, clear job,” and we respect that. 🫶

🌸 NAME 🌸

DRM_MODE_RES_MM — calculates the display size from resolution and DPI. periodt. 💅

🎀 SYNOPSIS 🎀

the whole call is right here, no cap:

DRM_MODE_RES_MM (res , dpi );

🦋 ARGUMENTS 🦋

okay so it takes two arguments, and neither one is mysterious:

• res — the resolution, in pixel. like, that’s the pixel situation. 👀
• dpi — the number of dots per inch. literally the dots-per-inch number. 💫

🌈 SEE ALSO 🌈

if you’re going on a lil kernel adventure, these are the neighbors, bestie:

• Kernel file ./include/drm/drm_modes.h
• enum drm_mode_status(9)
• DRM_MODE_INIT(9)
• DRM_SIMPLE_MODE(9)
• struct drm_display_mode(9)
• DRM_MODE_FMT(9)
• DRM_MODE_ARG(9)
• drm_mode_is_stereo(9)

mwah 💖 that’s the whole page — it comes from ./include/drm, it’s dated October 2026, and it’s the DRM_MODE_RES_MM(9) manual page. slay. 💅