mipi_dsi_dcs_write_buffer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mipi_dsi_dcs_write_buffer 💅

okay so bestie, welcome to the Kernel API Manual — yes it's giving kernel dev at 2am, but this page is actually such a vibe once you get it 🫶

✨ NAME ✨

mipi_dsi_dcs_write_buffer — transmit a DCS command with payload 💌

✨ SYNOPSIS ✨

ssize_t mipi_dsi_dcs_write_buffer (struct mipi_dsi_device *dsi , const
       void *data , size_t len );

look at her. three args. no drama. slay ✨

🎀 ARGUMENTS 🎀

  • dsi — the DSI peripheral device, aka the main character of this whole operation 👑
  • data — buffer containing data to be transmitted, like the little gift you're sending 🎁
  • len — size of transmission buffer, aka how much of that gift is actually real 📏

🦋 DESCRIPTION 🦋

so the way that this function literally just handles the data-type situation for you?? iconic. it will automatically choose the right data type depending on the command payload length 💫 no cap, you don't gotta sit there picking short vs long packet formats by hand — she reads the length and picks the right one herself. main character energy fr fr.

🌸 RETURN 🌸

it returns the number of bytes successfully transmitted ✨ — or a negative error code on failure 😭 (so like, always check, bestie, don't just vibe past it).

🌈 SEE ALSO 🌈

it's a whole friend group, iykyk 💅 straight out of the kernel file ./drivers/gpu/drm/drm_mipi_dsi.c:

that's 65 links babes, we are NOT skipping a single one 💀✨

ngl the whole point is: you hand her the device, a buffer, and a length — she picks the data type for you and tells you how many bytes made it out. that's it. that's the girl. 🎀

okay that's the whole page bestie, you ate that 🫶 signed off from the source tree ./drivers/gpu/drm, dated October 2026 — periodt 💅💖

📦 where this page comes from