get_pixel_write_function(9)

okay bestie, welcome to the Kernel API Manual page for get_pixel_write_function(9) — we're finding the correct write_pixel function for a specific format, and yes, the vibe is very "kernel but make it cute" 💅✨

💖 NAME 💖

get_pixel_write_function — okay so this is the little icon that retrieves the correct write_pixel function for a specific format. The returned pointer is NULL for unsupported pixel formats, so don't just assume it's cute and ready to go.

⚠️ important caveat, bestie: the caller must ensure that the pointer is valid before using it in a vkms_writeback_job. Like, that's not optional. 💅

✨ SYNOPSIS ✨

here's the exact signature, no cap:

pixel_write_t get_pixel_write_function (u32 format );

🎀 ARGUMENTS 🎀

• format — a DRM_FORMAT_* value, and you're asking for the conversion function for that format (see [drm_fourcc.h]). That's the whole argument, bestie.

🦋 SEE ALSO 🦋

Kernel file ./drivers/gpu/drm/vkms/vkms_formats.c — that's where this lives, iykyk. And here's the whole squad, no one left behind:

• packed_pixels_offset(9)
• packed_pixels_addr(9)
• get_block_step_bytes(9)
• packed_pixels_addr_1x1(9)
• get_subsampling(9)
• get_subsampling_offset(9)
• READ_LINE(9)
• READ_LINE_ARGB8888(9)
• READ_LINE_le16161616(9)
• READ_LINE_YUV_SEMIPLANAR(9)
• vkms_writeback_row(9)
• get_pixel_read_line_function(9)
• swap_uv_columns(9)
• get_conversion_matrix_to_argb_u16(9)

mwah 💋 — source/version ./drivers/gpu/drm/vkms, date October 2026, get_pixel_write_function(9) signing off. 🎀✨