mipi_dsi_dc...y_brightness(9)

🌸 mipi_dsi_dcs_get_display_brightness(9) — the Kernel API Manual era 💅

okay bestie, pull up a chair, because today we're reading a real one from the Kernel API Manual (yes, that's the manual we're in, and yes it's a whole vibe) 🎀

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✨ NAME ✨

mipi_dsi_dcs_get_display_brightness — literally just gets the current brightness value of the display 🔆 like that's it, that's the whole job, and honestly? iconic.

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🦋 SYNOPSIS 🦋

int mipi_dsi_dcs_get_display_brightness (struct mipi_dsi_device *dsi ,
u16 *brightness );

so you call it, you hand it a dsi and a place to stash the brightness, and it returns an int. simple. clean. no cap. ✨

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🌈 ARGUMENTS 🌈

• dsi — the DSI peripheral device 💖 this is the display bestie you're asking about.
• brightness — the brightness value 🫶 this is where the answer goes, so like, make sure it's a real pointer, ok?

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⭐ RETURN ⭐

0 on success 🎉 or a negative error code on failure 😭 (ngl the negative error code is giving "something went wrong and we're being vague about it").

fr fr: 0 = slay, negative = not slay. no in-between.

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👑 SEE ALSO 👑

before you go, here's the whole friend group — the kernel file is ./drivers/gpu/drm/drm_mipi_dsi.c, and the squad is:

• dsi helpers(9)
• of_find_mipi_dsi_device_by_node(9)
• mipi_dsi_device_register_full(9)
• mipi_dsi_device_unregister(9)
• devm_mipi_dsi_device_register_full(9)
• of_find_mipi_dsi_host_by_node(9)
• mipi_dsi_attach(9)
• mipi_dsi_detach(9)
• devm_mipi_dsi_attach(9)
• mipi_dsi_packet_format_is_short(9)
• mipi_dsi_packet_format_is_long(9)
• mipi_dsi_create_packet(9)
• mipi_dsi_shutdown_peripheral(9)
• mipi_dsi_turn_on_peripheral(9)
• mipi_dsi_compression_mode_ext(9)
• mipi_dsi_compression_mode(9)
• mipi_dsi_picture_parameter_set(9)
• mipi_dsi_generic_write(9)
• mipi_dsi_generic_write_multi(9)
• mipi_dsi_dual_generic_write_multi(9)
• mipi_dsi_generic_read(9)
• drm_mipi_dsi_get_input_bus_fmt(9)
• mipi_dsi_dcs_write_buffer(9)
• mipi_dsi_dcs_write_buffer_chatty(9)
• mipi_dsi_dcs_write_buffer_multi(9)
• mipi_dsi_dual_dcs_write_buffer_multi(9)
• mipi_dsi_dcs_write(9)
• mipi_dsi_dcs_read(9)
• mipi_dsi_dcs_read_multi(9)
• mipi_dsi_dcs_nop(9)
• mipi_dsi_dcs_soft_reset(9)
• mipi_dsi_dcs_get_power_mode(9)
• mipi_dsi_dcs_get_pixel_format(9)
• mipi_dsi_dcs_enter_sleep_mode(9)
• mipi_dsi_dcs_exit_sleep_mode(9)
• mipi_dsi_dcs_set_display_off(9)
• mipi_dsi_dcs_set_display_on(9)
• mipi_dsi_dcs_set_column_address(9)
• mipi_dsi_dcs_set_page_address(9)
• mipi_dsi_dcs_set_tear_on(9)
• mipi_dsi_dcs_set_pixel_format(9)
• mipi_dsi_dcs_set_tear_scanline(9)
• mipi_dsi_dcs_set_display_brightness(9)
• mipi_dsi_dcs_set_display_brightness_large(9)
• mipi_dsi_dcs_get_display_brightness_large(9)
• mipi_dsi_picture_parameter_set_multi(9)
• mipi_dsi_compression_mode_ext_multi(9)
• mipi_dsi_compression_mode_multi(9)
• mipi_dsi_dcs_nop_multi(9)
• mipi_dsi_dcs_enter_sleep_mode_multi(9)
• mipi_dsi_dcs_exit_sleep_mode_multi(9)
• mipi_dsi_dcs_set_display_off_multi(9)
• mipi_dsi_dcs_set_display_on_multi(9)
• mipi_dsi_dcs_set_tear_on_multi(9)
• mipi_dsi_turn_on_peripheral_multi(9)
• mipi_dsi_dcs_set_tear_off_multi(9)
• mipi_dsi_dcs_soft_reset_multi(9)
• mipi_dsi_dcs_set_display_brightness_multi(9)
• mipi_dsi_dcs_set_pixel_format_multi(9)
• mipi_dsi_dcs_set_column_address_multi(9)
• mipi_dsi_dcs_set_page_address_multi(9)
• mipi_dsi_dcs_set_tear_scanline_multi(9)
• mipi_dsi_shutdown_peripheral_multi(9)
• mipi_dsi_driver_register_full(9)
• mipi_dsi_driver_unregister(9)

like, that's a lot of friends and every single one of them is in the list, don't @ me 💀

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and that's the page bestie!! 🧚‍♀️ straight from ./drivers/gpu/drm, dated October 2026, credit where credit's due — the Kernel API Manual stays iconic for that one. mwah 💋 go forth and read your brightness ✨