drm_mipi_db...r_mode_valid(9)

💅 drm_mipi_dbi_crtc_helper_mode_valid ✨

okay so bestie, welcome to the Kernel API Manual 🎀 — this little cutie lives in the DRM/MIPI corner of the kernel and honestly it's giving "small function, big responsibilities" energy. let's get into it 🫶

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🌸 NAME 🌸

drm_mipi_dbi_crtc_helper_mode_valid — the MIPI DBI mode-valid helper 💖

like, that's literally its whole job. it checks if a mode is valid. iconic behavior honestly 👑

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✨ SYNOPSIS ✨

enum drm_mode_status drm_mipi_dbi_crtc_helper_mode_valid (struct
       drm_crtc *crtc , const struct drm_display_mode *mode );

no cap, that's the whole signature. it hands you back an enum drm_mode_status — so you get a lil verdict about the mode, not just a yes/no vibe 🌈

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🦋 ARGUMENTS 🦋

• crtc — the CRTC 💅 (yes queen, that one)
• mode — the mode you wanna test 🧚 like, the one you're putting on the vibe check chopping block

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💜 DESCRIPTION 💜

so what it does: this function validates a given display mode against the MIPI DBI's hardware display ✨ it's literally the vibe check for modes against the actual panel, fr fr.

and bestie, here's the slay part — drivers can use this as their struct drm_crtc_helper_funcs.mode_valid callback 👑 so you don't gotta write your own. just point the callback at this and you're done. main character energy.

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🔥 SEE ALSO 🔥

okay this list is long but every single one of these deserves a mention, no skipping, periodt 💀

• Kernel file ./drivers/gpu/drm/drm_mipi_dbi.c overview(9)
• mipi_dbi_command_read(9)
• mipi_dbi_command_buf(9)
• mipi_dbi_buf_copy(9)
• drm_mipi_dbi_plane_helper_atomic_check(9)
• drm_mipi_dbi_plane_helper_atomic_update(9)
• drm_mipi_dbi_crtc_helper_atomic_check(9)
• drm_mipi_dbi_crtc_helper_atomic_disable(9)
• drm_mipi_dbi_connector_helper_get_modes(9)
• drm_mipi_dbi_dev_init(9)
• mipi_dbi_hw_reset(9)
• mipi_dbi_display_is_on(9)
• mipi_dbi_poweron_reset(9)
• mipi_dbi_poweron_conditional_reset(9)
• mipi_dbi_spi_cmd_max_speed(9)
• mipi_dbi_spi_init(9)
• mipi_dbi_spi_transfer(9)
• mipi_dbi_debugfs_init(9)

ngl that's a whole friend group and they all ate 💖 go read them too, iykyk 🌟

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lowkey a reminder babe: mode_valid is a callback — you're registering this function, not calling it yourself in normal driver flow. the DRM core comes knocking 💅

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and that's the page!! mwah 💋 this one's from ./drivers/gpu/drm, dated October 2026 — stay hydrated, keep your modes valid, and remember: the kernel loves you back 🫶🌸💜