STRUCT C3_ISP_PARAMS_AWB_CONFIG(9)

💅 struct c3_isp_params_awb_config(9) ✨

okay so this is a page from the Kernel API Manual — yes, the Kernel API Manual, we're doing kernel docs today bestie, put your hair up 🎀

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🌸 NAME 🌸

struct c3_isp_params_awb_config — the stats settings for auto-white balance, aka the little struct that tells your ISP how to see colour correctly 💖

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✨ SYNOPSIS ✨

struct c3_isp_params_awb_config {
    struct c3_isp_params_block_header header;
    __u8 tap_point;
    __u8 satur_vald;
    __u8 horiz_zones_num;
    __u8 vert_zones_num;
    __u16 rg_min;
    __u16 rg_max;
    __u16 bg_min;
    __u16 bg_max;
    __u16 rg_low;
    __u16 rg_high;
    __u16 bg_low;
    __u16 bg_high;
    __u8 zone_weight[C3_ISP_AWB_MAX_ZONES];
    __u16 horiz_coord[C3_ISP_AWB_MAX_PT_NUM];
    __u16 vert_coord[C3_ISP_AWB_MAX_PT_NUM];
 };

like, look at her. struct of all time. no cap 🫶

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🦋 Members 🦋

okay bestie, field-by-field, let's get into it 👑

• header — the C3 ISP parameters block header, the little VIP pass every block carries 💅
• tap_point — the tap point, pulled straight from enum c3_isp_params_awb_tap_point
• satur_vald — the AWB statistic over-saturation control value: 0 means disable, 1 means enable. that's it, that's the whole switch ✨
• horiz_zones_num — active number of horizontal zones, range [0..32]
• vert_zones_num — active number of vertical zones, range [0..24]
• rg_min — minimum R/G ratio, in Q4.8 format 🍓
• rg_max — maximum R/G ratio, in Q4.8 format
• bg_min — minimum B/G ratio, in Q4.8 format 🫐
• bg_max — maximum B/G ratio, in Q4.8 format
• rg_low — R/G ratio trim low, in Q4.8 format
• rg_high — R/G ratio trim high, in Q4.8 format
• bg_low — B/G ratio trim low, in Q4.8 format
• bg_high — B/G ratio trim high, in Q4.8 format
• zone_weight — array of weights for the AWB statistics zones, range [0..15] ⚖️
• horiz_coord — the horizontal coordinate of points on the diagonal, range [0..2888]
• vert_coord — the vertical coordinate of points on the diagonal, range [0..2240]

bestie pls notice the format notes — every single ratio here is Q4.8, not whatever float energy you were about to send it. iykyk 😭

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🌈 Description 🌈

so this struct is literally the whole vibe-check for AWB: it lets you configure the statistics generated for auto white balance. that's the entire job, and she does it 💖

and here's the one thing you cannot fumble — header.type should be set to C3_ISP_PARAMS_BLOCK_AWB_CONFIG, which comes from :c:type:c3_isp_params_block_type``. set it wrong and the block is giving nothing, honestly 💀

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👑 SEE ALSO 👑

go touch some grass and then read all of these, in this exact order, because i said so 🧚

• Kernel file ./include/uapi/linux/media/amlogic/c3-isp-config.h
• struct c3_isp_awb_zone_stats(9)
• struct c3_isp_awb_stats(9)
• struct c3_isp_ae_zone_stats(9)
• struct c3_isp_ae_stats(9)
• struct c3_isp_af_zone_stats(9)
• struct c3_isp_af_stats(9)
• struct c3_isp_stats_info(9)
• enum c3_isp_params_buffer_version(9)
• enum c3_isp_params_block_type(9)
• c3_isp_params_block_header(9)
• struct c3_isp_params_awb_gains(9)
• enum c3_isp_params_awb_tap_points(9)
• enum c3_isp_params_ae_tap_points(9)
• struct c3_isp_params_ae_config(9)
• enum c3_isp_params_af_tap_points(9)
• struct c3_isp_params_af_config(9)
• struct c3_isp_params_pst_gamma(9)
• struct c3_isp_params_ccm(9)
• struct c3_isp_params_csc(9)
• struct c3_isp_params_blc(9)
• C3_ISP_PARAMS_MAX_SIZE(9)
• struct c3_isp_params_cfg(9)

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ok that's the whole page, go set your header type correctly and hydrate 💜

later bestie 😘 this one came from ./include/uapi/linux/media/aml... and it's dated October 2026 — so yeah, from the future, main character energy fr fr ⭐🌈