STRUCT RKISP1_CIF_ISP_AFC_CONFIG(9)

💅 struct rkisp1_cif_isp_afc_config(9) 💅

okay so bestie, welcome to the Kernel API Manual 🎀 — yes we're in kernel-doc land, it's giving "the source code reads YOU back" energy, but honestly? this one is a snack. it's a little struct, it's got four fields, we're gonna slay it together 🫶

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✨ NAME ✨

struct rkisp1_cif_isp_afc_config — the configuration for the Auto Focus statistics 👁️✨ like, the struct that tells the AF block how to go find the sharp bits. no cap, that's the whole name.

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🌸 SYNOPSIS 🌸

here's the shape of it, copy it exactly, don't come for me about the formatting, that's just how it is:

struct rkisp1_cif_isp_afc_config {
    __u8 num_afm_win;
    struct rkisp1_cif_isp_window
afm_win[RKISP1_CIF_ISP_AFM_MAX_WINDOWS];
    __u32 thres;
    __u32 var_shift;
 };

like… four members. that's it. that's the girl. 💅

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🎀 Members 🎀

okay let's meet the cast, they all have main character energy in their own way:

• num_afm_win — the number of AF measurement windows, and the max is RKISP1_CIF_ISP_AFM_MAX_WINDOWS 🏁 (so, don't go over. girl, don't go over.)
• afm_win — the coordinates of the meas window 📍 literally where the focus magic looks.
• thres — the threshold used for minimizing the influence of noise 🔇 like, it keeps the noisy little gremlins from messing with your stats.
• var_shift — the number of bits for the shift operation at the end of the calculation chain 🔄 it's the last lil shift step, the finishing touch, the bow on top 🎀

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🦋 SEE ALSO 🦋

okay so there are a LOT of friends in this extended universe — bestie, I would not gatekeep, here's the whole group chat, every single one, ./include/uapi/linux/rkisp1-config.h is the kernel file holding this whole clique:

• enum rkisp1_cif_isp_version(9)
• enum rkisp1_cif_isp_exp_ctrl_autostop(9)
• enum rkisp1_cif_isp_exp_meas_mode(9)
• struct rkisp1_cif_isp_window(9)
• struct rkisp1_cif_isp_bls_fixed_val(9)
• struct rkisp1_cif_isp_bls_config(9)
• struct rkisp1_cif_isp_dpcc_methods_config(9)
• struct rkisp1_cif_isp_dpcc_config(9)
• struct rkisp1_cif_isp_gamma_corr_curve(9)
• struct rkisp1_cif_isp_gamma_curve_x_axis_pnts(9)
• struct rkisp1_cif_isp_sdg_config(9)
• struct rkisp1_cif_isp_lsc_config(9)
• struct rkisp1_cif_isp_ie_config(9)
• struct rkisp1_cif_isp_cproc_config(9)
• struct rkisp1_cif_isp_awb_meas_config(9)
• struct rkisp1_cif_isp_awb_gain_config(9)
• struct rkisp1_cif_isp_flt_config(9)
• struct rkisp1_cif_isp_bdm_config(9)
• struct rkisp1_cif_isp_ctk_config(9)
• struct rkisp1_cif_isp_goc_config(9)
• struct rkisp1_cif_isp_hst_config(9)
• struct rkisp1_cif_isp_aec_config(9)
• enum rkisp1_cif_isp_dpf_gain_usage(9)
• enum rkisp1_cif_isp_dpf_rb_filtersize(9)
• enum rkisp1_cif_isp_dpf_nll_scale_mode(9)
• struct rkisp1_cif_isp_dpf_nll(9)
• struct rkisp1_cif_isp_dpf_rb_flt(9)
• struct rkisp1_cif_isp_dpf_g_flt(9)
• struct rkisp1_cif_isp_dpf_gain(9)
• struct rkisp1_cif_isp_dpf_config(9)
• struct rkisp1_cif_isp_dpf_strength_config(9)
• struct rkisp1_cif_isp_isp_other_cfg(9)
• struct rkisp1_cif_isp_isp_meas_cfg(9)
• struct rkisp1_params_cfg(9)
• struct rkisp1_cif_isp_compand_bls_config(9)
• struct rkisp1_cif_isp_compand_curve_config(9)
• struct rkisp1_cif_isp_wdr_tone_curve(9)
• struct rkisp1_cif_isp_wdr_iref_config(9)
• struct rkisp1_cif_isp_wdr_config(9)
• enum rkisp1_cif_isp_cac_v_clip_mode(9)
• struct rkisp1_cif_isp_cac_config(9)
• struct rkisp1_cif_isp_awb_meas(9)
• struct rkisp1_cif_isp_awb_stat(9)
• struct rkisp1_cif_isp_bls_meas_val(9)
• struct rkisp1_cif_isp_ae_stat(9)
• struct rkisp1_cif_isp_af_meas_val(9)
• struct rkisp1_cif_isp_af_stat(9)
• struct rkisp1_cif_isp_hist_stat(9)
• struct rkisp1_cif_isp_stat(9)
• struct rkisp1_stat_buffer(9)
• enum rkisp1_ext_params_block_type(9)
• rkisp1_ext_params_block_header(9)
• struct rkisp1_ext_params_bls_config(9)
• struct rkisp1_ext_params_dpcc_config(9)
• struct rkisp1_ext_params_sdg_config(9)
• struct rkisp1_ext_params_lsc_config(9)
• struct rkisp1_ext_params_awb_gain_config(9)
• struct rkisp1_ext_params_flt_config(9)
• struct rkisp1_ext_params_bdm_config(9)
• struct rkisp1_ext_params_ctk_config(9)
• struct rkisp1_ext_params_goc_config(9)
• struct rkisp1_ext_params_dpf_config(9)
• struct rkisp1_ext_params_dpf_strength_config(9)
• struct rkisp1_ext_params_cproc_config(9)
• struct rkisp1_ext_params_ie_config(9)
• struct rkisp1_ext_params_awb_meas_config(9)
• struct rkisp1_ext_params_hst_config(9)
• struct rkisp1_ext_params_aec_config(9)
• struct rkisp1_ext_params_afc_config(9)
• struct rkisp1_ext_params_compand_bls_config(9)
• struct rkisp1_ext_params_compand_curve_config(9)
• struct rkisp1_ext_params_wdr_config(9)
• struct rkisp1_ext_params_cac_config(9)
• enum rkisp1_ext_param_buffer_version(9)
• struct rkisp1_ext_params_cfg(9)

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ok and if you needed the receipts, this whole thing lives at ./include/uapi/linux and it's dated October 2026 — so yeah, the future called, it wants its AF config back 📞💀

and that's the vibe check, bestie — go configure some autofocus, you're gonna eat 💖✨👑 slay 🦋🌸