drm_format_info_block_width(9)

💖 drm_format_info_block_width(9) 💖

okay so bestie, welcome to the Kernel API Manual — today's main character is drm_format_info_block_width(9), and honestly? she's doing exactly one thing and she's doing it slayfully. 🦋

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✨ NAME ✨

drm_format_info_block_width — literally just the width in pixels of a block. that's it. that's the vibe. 💅

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🌸 SYNOPSIS 🌸

unsigned int drm_format_info_block_width (const struct drm_format_info
*info , int plane );

no cap, that's the whole signature. two args, one unsigned int coming back atcha. 🎀

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🫶 ARGUMENTS 🫶

• info — the pixel format info, aka the little struct that knows things. she's a const struct drm_format_info * and she's iconic for it. 👑
• plane — the plane index. which plane are we talking about? this int. that's her whole job. 🧚

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⭐ RETURN ⭐

the width in pixels of a block — and lowkey the important part: it depends on the plane index. so like, don't assume it's the same for every plane, bestie. different plane, different answer. periodt. 💀

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🌈 SEE ALSO 🌈

go look at the kernel file ./drivers/gpu/drm/drm_fourcc.c — that's where the magic lives, fr fr. and while you're in the neighborhood, these besties are all in the same friend group:

• drm_mode_legacy_fb_format(9)
• drm_driver_legacy_fb_format(9)
• drm_driver_color_mode_format(9)
• drm_format_info(9)
• drm_get_format_info(9)
• drm_format_info_block_height(9)
• drm_format_info_bpp(9)
• drm_format_info_min_pitch(9)

like… the whole drm_format_info_* crew? obsessed. 🍓

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ngl, if you only remember one thing: width. in pixels. of a block. depending on the plane index. that's the tea ☕ and it's piping hot 💅

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and that's a wrap, bestie!! this page came from ./drivers/gpu/drm and it's dated October 2026, so like… future energy fr. mwah 💋✨🦋🌸💜