mipi_dbi_command_buf(9)

💅 mipi_dbi_command_buf(9) — from the Kernel API Manual, bestie

okay so first things first, you're reading mipi_dbi_command_buf(9) out of the Kernel API Manual, and honestly? she's a little icon. let's get into it 🎀

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✨ NAME ✨

mipi_dbi_command_buf — it's a MIPI DCS command, but with the parameter(s) chillin' in an array 🫶

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🌸 SYNOPSIS 🌸

int mipi_dbi_command_buf (struct mipi_dbi *dbi , u8 cmd , u8 *data ,
size_t len );

like, that's the whole vibe. five tokens and she's done 💅

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🦋 ARGUMENTS 🦋

okay so here's what you're actually handing her:

• dbi — the MIPI DBI structure. your main character struct, the one everything hangs off of ✨
• cmd — the Command. literally just the command, no notes 💖
• data — the Parameter buffer. this is where the actual stuff lives 🎀
• len — the Buffer length. how much of that buffer you're for real using 🌸

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⭐ RETURN ⭐

Zero on success, and a negative error code if it flops 😭 that's it, that's the whole return contract, no cap.

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👑 SEE ALSO 👑

the whole friend group, fr fr — go read these next:

• Kernel file ./drivers/gpu/drm/drm_mipi_dbi.c overview(9)
• mipi_dbi_command_read(9)
• mipi_dbi_buf_copy(9)
• drm_mipi_dbi_crtc_helper_mode_valid(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)

like I said — the whole group chat 💀 go say hi 🦋

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okay that's the page!! and for the little sign-off: this one lives over in ./drivers/gpu/drm and she's dated October 2026 ✨ mwah, study her, she's important 🎀💖