drm_dsc_setup_rc_params(9)

✨ drm_dsc_setup_rc_params ✨

okay so welcome to the Kernel API Manual, bestie — this one's a little function from the DRM Display subsystem and it's honestly doing the most for rate control 💅

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🎀 NAME 🎀

drm_dsc_setup_rc_params — sets the parameters and limits for the RC model, all in accordance with the DSC 1.1 or 1.2 specification and the DSC C Model 🦋

⚠️ real talk: bits_per_pixel and bits_per_component are required to be set before you call this function. like, non-negotiable. set them first or don't come to the party 🙈

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🌸 SYNOPSIS 🌸

int drm_dsc_setup_rc_params (struct drm_dsc_config *vdsc_cfg , enum
drm_dsc_params_type type );

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💖 ARGUMENTS 💖

• vdsc_cfg — the DSC configuration data, partially filled in by the driver (yes, partially — that's the vibe, the rest is this function's moment ✨)
• type — the operating mode and the standard to follow 👑

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⭐ RETURN ⭐

0, or a -error code if something went sideways 😭 — so like, check it, fr fr.

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🫶 SEE ALSO 🫶

Kernel file ./drivers/gpu/drm/display/drm_dsc_helper.c — that's where the dsc helpers live, iykyk:

• dsc helpers(9)
• drm_dsc_dp_pps_header_init(9)
• drm_dsc_dp_rc_buffer_size(9)
• drm_dsc_pps_payload_pack(9)
• drm_dsc_set_const_params(9)
• drm_dsc_set_rc_buf_thresh(9)
• drm_dsc_compute_rc_parameters(9)
• drm_dsc_get_bpp_int(9)
• drm_dsc_initial_scale_value(9)
• drm_dsc_flatness_det_thresh(9)
• drm_dsc_dump_config(9)

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that's the whole thing, no cap — go set those rc params, main character 💜

signed off from ./drivers/gpu/drm/display, dated October 2026 — catch you in the next manpage, bestie 🎀✨