mipi_dbi_display_is_on(9)

💖 NAME 💖

okay bestie, welcome to the Kernel API Manual page for mipi_dbi_display_is_on(9) — literally the “Check if display is on” page, no cap. 💅

mipi_dbi_display_is_on — Check if display is on. ✨

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✨ SYNOPSIS ✨

bool mipi_dbi_display_is_on (struct mipi_dbi *dbi );

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🎀 ARGUMENTS 🎀

• dbi — the MIPI DBI structure (struct mipi_dbi), aka the thing we're inspecting. 🫶

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🦋 DESCRIPTION 🦋

So this function checks the Power Mode register — but only if it's readable — to see if display output is turned on. Lowkey useful: you can use it to see if the bootloader has already turned on the display, which avoids flicker when the pipeline is enabled. Iconic behavior honestly. ✨

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🌸 RETURN 🌸

• true if the display can be verified to be on.
• false otherwise.

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👑 SEE ALSO 👑

• 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_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_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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mwah 💋 — this lil page lives under the source/version path ./drivers/gpu/drm, dated October 2026, and it's the mipi_dbi_display_is_on(9) page. byeee bestie, go check those displays 🫶🌈