mipi_dbi_buf_copy(9)

💅 mipi_dbi_buf_copy(9) — the kernel API manual, but make it cute

okay so bestie, you're in the Kernel API Manual and this little icon is called mipi_dbi_buf_copy. no cap, it's a whole vibe.

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✨ NAME ✨

mipi_dbi_buf_copy — copy a framebuffer, and transform it if necessary 🎀

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🌸 SYNOPSIS 🌸

int mipi_dbi_buf_copy (void *dst , struct iosys_map *src , struct
       drm_framebuffer *fb , struct drm_rect *clip , bool swap , struct
       drm_format_conv_state *fmtcnv_state );

that's the whole signature, don't come for me, I copied it exactly 💖

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🦋 ARGUMENTS 🦋

• dst — the destination buffer, i.e. where the pixels are going 🫶
• src — the source buffer, i.e. where the pixels are coming from
• fb — the source framebuffer, the main character of the source side
• clip — the clipping rectangle of the area that's gonna get copied (yes, only that area ✂️)
• swap — when it's true, it swaps the MSB and LSB of 16-bit values 🔁
• fmtcnv_state — the format-conversion state, lowkey important

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⭐ RETURN ⭐

Zero on success, and a negative error code if it fails 😭 periodt.

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🌈 SEE ALSO 🌈

the whole friend group, fr fr:

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

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k bye bestie, go copy that framebuffer 💜

this page lives under ./drivers/gpu/drm, dated October 2026, and yeah — that's the whole mipi_dbi_buf_copy(9) moment. slay 🎀✨