calc_rc_params(9)

🎀 calc_rc_params(9) 🎀

okay so welcome to the Kernel API Manual bestie, this is the page for calc_rc_params(9) and we're gonna get you comfy with it 💅

✨ NAME ✨

calc_rc_params — reads the user's cmdline mode

🌸 SYNOPSIS 🌸

void calc_rc_params (struct rc_params *rc , const struct drm_dsc_config
*pps );

💖 ARGUMENTS 💖

• rc — the DC internal DSC parameters, literally the internal glow-up data for DSC
• pps — the DRM struct with all required DSC values, aka the DRM-side bestie carrying every DSC value you need

🦋 DESCRIPTION 🦋

So this function expects a drm_dsc_config data struct with all the required DSC values already filled out by our driver — like, previously filled out, no cap — and based on that information it computes some of the DSC values. That's the whole vibe: info goes in, some DSC values get computed ✨

note This calculation requires float point operation, most of it executes under kernel_fpu_{begin,end}. 💀

🫶 SEE ALSO 🫶

Kernel file ./drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c

and that's the page, bestie 🍓 This iconic lil manual page comes from the Kernel API Manual, source ./drivers/gpu/drm/amd/display/..., dated October 2026. periodt 💋