dc_validate_with_context(9)

✨ dc_validate_with_context(9) ✨

okay bestie, welcome to the Kernel API Manual — yes it's a real manual page, yes it's about validating a potential new stream in a context object, and yes we're gonna make it make sense 💅

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🌸 NAME 🌸

dc_validate_with_context — literally the function that validates and updates the potential new stream inside the context object. it's giving "check it and fix it at the same time" energy 👑

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✨ SYNOPSIS ✨

enum dc_status dc_validate_with_context (struct dc *dc , const struct
       dc_validation_set *set , struct dc_state *context , enum
       dc_validate_mode validate_mode );

that's the whole signature, no cap — four arguments, and yes they're all important, don't skip any 🫶

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🦋 ARGUMENTS 🦋

• dc — this one's your window into the current state status. used to get the current state status, periodt.
• set — the root validation object, and she is holding everything: all the streams and all their planes. main character energy fr.
• context — the new context. the fresh one. the one we're about to mess with 💖
• validate_mode — identifies the validation mode. that's the whole job. iykyk.

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🎀 DESCRIPTION 🎀

so here's the tea ☕ — this function updates the potential new stream in the context object.

it creates multiple lists for the streams, sorted into three lil categories: the add streams, the remove streams, and the unchanged streams. very organized, very demure.

and here's the plot twist 😭 — in particular, if the unchanged streams have a plane that changed, it is necessary to remove all planes from the unchanged streams. like, all of them. not a vibe check you can skip, bestie.

in summary (and yes i'm summarizing but the facts stay): this function is responsible for validating the new context. that's it, that's the gig 🌈

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⭐ RETURN ⭐

in case of success, return DC_OK (1) 🎉 otherwise, return a DC error 💀

lowkey important: 1 is the happy number here, not 0. don't get caught slipping 🙈

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💜 SEE ALSO 💜

• Kernel file ./drivers/gpu/drm/amd/display/dc/core/dc_resource.c
• resource_validate_probe_set(9)
• dc_update_modified_pix_clock_for_dsc_with_padding(9)
• calculate_timing_params_for_dsc_with_padding(9)
• dc_validate_global_state(9)

go read those too, they're all in the same friend group 🧚

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and that's the page!! 💖 this lil gem lives over in ./drivers/gpu/drm/amd/display/... and the version/date situation is stamped October 2026 — so yeah, bookmark it, screenshot it, send it to the group chat, and slay your validation era 🦋✨👑