STRUCT ROM_CURVE_CAPS(9)

💖 struct rom_curve_caps(9) 💖

okay so welcome to the struct rom_curve_caps(9) page, bestie — it's Kernel API Manual content but we're doing it with main-character energy. This struct is literally the predefined transfer function caps for degamma and regamma, and it is lowkey adorable because it's just a tiny pile of bitfields. 🦋

✨ NAME ✨

struct rom_curve_caps — predefined transfer function caps for degamma and regamma. periodt. 💅

🦋 SYNOPSIS 🦋

It's giving tiny bitfield struct, no cap. Behold, exactly:

       struct rom_curve_caps {
           uint16_t srgb : 1;
           uint16_t bt2020 : 1;
           uint16_t gamma2_2 : 1;
           uint16_t pq : 1;
           uint16_t hlg : 1;
        };

🌸 Members 🌸

• srgb — RGB color space transfer func.
• bt2020 — BT.2020 transfer func.
• gamma2_2 — standard gamma.
• pq — perceptual quantizer transfer function.
• hlg — hybrid log–gamma transfer function.

In the synopsis they're all uint16_t bitfields with : 1, so every member is literally one tiny bit of caps. 🎀

🔥 SEE ALSO 🔥

Kernel file: ./drivers/gpu/drm/amd/display/dc/dc.h — and the whole squad is:

• MAX_SURFACES(9)
• MAX_PLANES(9)
• color-management-caps(9)
• struct dpp_color_caps(9)
• struct mpc_color_caps(9)
• struct dc_color_caps(9)
• enum pipe_split_policy(9)
• dc_check_state_update(9)
• dc_update_state(9)
• dc_update_state_init(9)
• dc_update_state_prepare(9)
• dc_update_state_execute(9)
• dc_update_state_cleanup(9)
• struct dc_probe_latencies(9)
• struct dc_probe_status(9)
• enum dc_get_status_type(9)
• struct dc_get_status_options(9)
• struct dc_state_status(9)
• dc_state_get_status(9)
• struct dc_validation_stream(9)
• struct dc_validation_set(9)
• dc_get_underflow_debug_data_for_otg(9)
• dc_capture_register_software_state(9)
• dc_get_qos_info(9)
• dc_override_memory_bandwidth_request(9)

xoxo, your kernel bestie — source/version: ./drivers/gpu/drm/amd/display/dc, dated October 2026 💖🫶