STRUCT IPU3_UAPI_VSS_LUT_Y(9)

💫 struct ipu3_uapi_vss_lut_y(9) 💫

okay bestie, welcome to the Kernel API Manual entry for struct ipu3_uapi_vss_lut_y — the Vssnlm LUT y0/y1/y2 situation 🎀 no cap, this is the little bitfield bundle that holds the y-side lookup table vibes for Vssnlm. it's giving "small struct, big job" energy.

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✨ NAME ✨

struct ipu3_uapi_vss_lut_y — Vssnlm LUT y0/y1/y2 🦋

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🌸 SYNOPSIS 🌸

here's the whole thing, exactly as it lives, don't touch a single character:

struct ipu3_uapi_vss_lut_y {
    __u32 vs_y1:4;
    __u32 reserved0:4;
    __u32 vs_y2:4;
    __u32 reserved1:4;
    __u32 vs_y3:4;
    __u32 reserved2:12;
 };

look at those bitfields go 💅 __u32 carrying the whole team on its back.

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🫶 Members 🫶

okay so, member by member, and i'm being so precise about this:

• vs_y1 — Vssnlm LUT y1, precision u4, range [0, 8], default 1. 🍓
• reserved0 — reserved. hands off, that's not for you 🙈
• vs_y2 — Vssnlm LUT y2, precision u4, range [0, 8], default 3. ✨
• reserved1 — reserved. again: hands off 💀
• vs_y3 — Vssnlm LUT y3, precision u4, range [0, 8], default 8. 🔥
• reserved2 — reserved. that's the 12-bit one, respect it 👑

ngl the pattern is loud: u4 precision, range [0, 8], three real values and three little reserved gaps holding the layout together. iconic layout behaviour fr fr 🎀

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👑 SEE ALSO 👑

first up, the actual kernel file where this lives:

• Kernel file ./drivers/staging/media/ipu3/include/uapi/intel-ipu3.h

and then the full squad — every single one, no skipping, we don't do that here:

• struct ipu3_uapi_grid_config(9)
• struct ipu3_uapi_awb_set_item(9)
• struct ipu3_uapi_awb_raw_buffer(9)
• struct ipu3_uapi_awb_config_s(9)
• struct ipu3_uapi_awb_config(9)
• struct ipu3_uapi_ae_raw_buffer(9)
• struct ipu3_uapi_ae_raw_buffer_aligned(9)
• struct ipu3_uapi_ae_grid_config(9)
• struct ipu3_uapi_ae_weight_elem(9)
• struct ipu3_uapi_ae_ccm(9)
• struct ipu3_uapi_ae_config(9)
• struct ipu3_uapi_af_filter_config(9)
• struct ipu3_uapi_af_raw_buffer(9)
• struct ipu3_uapi_af_config_s(9)
• struct ipu3_uapi_awb_fr_raw_buffer(9)
• struct ipu3_uapi_awb_fr_config_s(9)
• struct ipu3_uapi_4a_config(9)
• struct ipu3_uapi_bubble_info(9)
• struct ipu3_uapi_ff_status(9)
• struct ipu3_uapi_stats_3a(9)
• struct ipu3_uapi_bnr_static_config_wb_gains_config(9)
• struct ipu3_uapi_bnr_static_config_wb_gains_thr_config(9)
• struct ipu3_uapi_bnr_static_config_thr_coeffs_config(9)
• struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config(9)
• struct ipu3_uapi_bnr_static_config_opt_center_config(9)
• struct ipu3_uapi_bnr_static_config_lut_config(9)
• struct ipu3_uapi_bnr_static_config_bp_ctrl_config(9)
• struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config(9)
• struct ipu3_uapi_bnr_static_config_opt_center_sqr_config(9)
• struct ipu3_uapi_bnr_static_config(9)
• struct ipu3_uapi_bnr_static_config_green_disparity(9)
• struct ipu3_uapi_dm_config(9)
• struct ipu3_uapi_ccm_mat_config(9)
• struct ipu3_uapi_gamma_corr_ctrl(9)
• struct ipu3_uapi_gamma_corr_lut(9)
• struct ipu3_uapi_gamma_config(9)
• struct ipu3_uapi_csc_mat_config(9)
• struct ipu3_uapi_cds_params(9)
• struct ipu3_uapi_shd_grid_config(9)
• struct ipu3_uapi_shd_general_config(9)
• struct ipu3_uapi_shd_black_level_config(9)
• struct ipu3_uapi_shd_config_static(9)
• struct ipu3_uapi_shd_lut(9)
• struct ipu3_uapi_shd_config(9)
• struct ipu3_uapi_iefd_cux2(9)
• struct ipu3_uapi_iefd_cux6_ed(9)
• struct ipu3_uapi_iefd_cux2_1(9)
• struct ipu3_uapi_iefd_cux4(9)
• struct ipu3_uapi_iefd_cux6_rad(9)
• struct ipu3_uapi_yuvp1_iefd_cfg_units(9)
• struct ipu3_uapi_yuvp1_iefd_config_s(9)
• struct ipu3_uapi_yuvp1_iefd_control(9)
• struct ipu3_uapi_sharp_cfg(9)
• struct ipu3_uapi_far_w(9)
• struct ipu3_uapi_unsharp_cfg(9)
• struct ipu3_uapi_yuvp1_iefd_shrp_cfg(9)
• struct ipu3_uapi_unsharp_coef0(9)
• struct ipu3_uapi_unsharp_coef1(9)
• struct ipu3_uapi_yuvp1_iefd_unshrp_cfg(9)
• struct ipu3_uapi_radial_reset_xy(9)
• struct ipu3_uapi_radial_reset_x2(9)
• struct ipu3_uapi_radial_reset_y2(9)
• struct ipu3_uapi_radial_cfg(9)
• struct ipu3_uapi_rad_far_w(9)
• struct ipu3_uapi_cu_cfg0(9)
• struct ipu3_uapi_cu_cfg1(9)
• struct ipu3_uapi_yuvp1_iefd_rad_cfg(9)
• struct ipu3_uapi_vss_lut_x(9)
• struct ipu3_uapi_yuvp1_iefd_vssnlm_cfg(9)
• struct ipu3_uapi_yuvp1_iefd_config(9)
• struct ipu3_uapi_yuvp1_yds_config(9)
• struct ipu3_uapi_yuvp1_chnr_enable_config(9)
• struct ipu3_uapi_yuvp1_chnr_coring_config(9)
• struct ipu3_uapi_yuvp1_chnr_sense_gain_config(9)
• struct ipu3_uapi_yuvp1_chnr_iir_fir_config(9)
• struct ipu3_uapi_yuvp1_chnr_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_lpf_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_sense_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_gain_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_clip_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_frng_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_diag_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config(9)
• struct ipu3_uapi_yuvp1_y_ee_nr_config(9)
• struct ipu3_uapi_yuvp2_tcc_gen_control_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_macc_elem_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_macc_table_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_inv_y_lut_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_gain_pcwl_lut_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_r_sqr_lut_static_config(9)
• struct ipu3_uapi_yuvp2_tcc_static_config(9)
• struct ipu3_uapi_anr_transform_config(9)
• struct ipu3_uapi_anr_stitch_pyramid(9)
• struct ipu3_uapi_anr_stitch_config(9)
• struct ipu3_uapi_anr_config(9)
• struct ipu3_uapi_acc_param(9)
• struct ipu3_uapi_isp_lin_vmem_params(9)
• struct ipu3_uapi_isp_tnr3_vmem_params(9)
• struct ipu3_uapi_isp_tnr3_params(9)
• struct ipu3_uapi_isp_xnr3_vmem_params(9)
• struct ipu3_uapi_xnr3_alpha_params(9)
• struct ipu3_uapi_xnr3_coring_params(9)
• struct ipu3_uapi_xnr3_blending_params(9)
• struct ipu3_uapi_isp_xnr3_params(9)
• struct ipu3_uapi_obgrid_param(9)
• struct ipu3_uapi_flags(9)
• struct ipu3_uapi_params(9)

like i said. the whole squad. ate 💅

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and that's the whole page, bestie! 🧚 this one shipped from ./drivers/staging/media/ipu3/i..., dated October 2026, under the Kernel API Manual banner — mwah, go read some .h files, ily 💖🌸✨