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media: staging: rkisp1: improve documentation in file rkisp1-config.h
There is some missing documentation of structs and fields in rkisp1-config.h. This patch improves the documentation. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Dafna Hirschfeld
Mauro Carvalho Chehab
parent
c066529755
commit
a096ddb477
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@ -4,11 +4,6 @@
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* Copyright (C) 2017 Rockchip Electronics Co., Ltd.
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*/
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/*
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* TODO: Improve documentation, mostly regarding abbreviation and hardware
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* specificities. Reference: "REF_01 - ISP_user_manual, Rev 2.57" (not public)
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*/
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#ifndef _UAPI_RKISP1_CONFIG_H
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#define _UAPI_RKISP1_CONFIG_H
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@ -18,23 +13,41 @@
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#define V4L2_META_FMT_RK_ISP1_PARAMS v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 params */
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#define V4L2_META_FMT_RK_ISP1_STAT_3A v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A statistics */
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/* Defect Pixel Cluster Detection */
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#define RKISP1_CIF_ISP_MODULE_DPCC BIT(0)
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/* Black Level Subtraction */
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#define RKISP1_CIF_ISP_MODULE_BLS BIT(1)
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/* Sensor De-gamma */
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#define RKISP1_CIF_ISP_MODULE_SDG BIT(2)
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/* Histogram */
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#define RKISP1_CIF_ISP_MODULE_HST BIT(3)
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/* Lens Shade Control */
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#define RKISP1_CIF_ISP_MODULE_LSC BIT(4)
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/* Auto White Balance Gain */
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#define RKISP1_CIF_ISP_MODULE_AWB_GAIN BIT(5)
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/* Filter */
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#define RKISP1_CIF_ISP_MODULE_FLT BIT(6)
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/* Bayer Demosaic */
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#define RKISP1_CIF_ISP_MODULE_BDM BIT(7)
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/* Cross Talk */
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#define RKISP1_CIF_ISP_MODULE_CTK BIT(8)
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/* Gamma Out Curve */
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#define RKISP1_CIF_ISP_MODULE_GOC BIT(9)
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/* Color Processing */
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#define RKISP1_CIF_ISP_MODULE_CPROC BIT(10)
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/* Auto Focus Control */
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#define RKISP1_CIF_ISP_MODULE_AFC BIT(11)
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/* Auto White Balancing */
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#define RKISP1_CIF_ISP_MODULE_AWB BIT(12)
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/* Image Effect */
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#define RKISP1_CIF_ISP_MODULE_IE BIT(13)
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/* Auto Exposure Control */
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#define RKISP1_CIF_ISP_MODULE_AEC BIT(14)
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/* Wide Dynamic Range */
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#define RKISP1_CIF_ISP_MODULE_WDR BIT(15)
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/* Denoise Pre-Filter */
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#define RKISP1_CIF_ISP_MODULE_DPF BIT(16)
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/* Denoise Pre-Filter Strength */
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#define RKISP1_CIF_ISP_MODULE_DPF_STRENGTH BIT(17)
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#define RKISP1_CIF_ISP_CTK_COEFF_MAX 0x100
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@ -84,6 +97,7 @@
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*/
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#define RKISP1_CIF_ISP_LSC_GRAD_TBL_SIZE 8
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#define RKISP1_CIF_ISP_LSC_SIZE_TBL_SIZE 8
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/*
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* The following matches the tuning process,
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* not the max capabilities of the chip.
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@ -158,6 +172,17 @@ enum rkisp1_cif_isp_exp_meas_mode {
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/*---------- PART1: Input Parameters ------------*/
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/**
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* struct rkisp1_cif_isp_window - measurement window.
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*
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* Measurements are calculated per window inside the frame.
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* This struct represents a window for a measurement.
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*
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* @h_offs: the horizontal offset of the window from the left of the frame in pixels.
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* @v_offs: the vertical offset of the window from the top of the frame in pixels.
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* @h_size: the horizontal size of the window in pixels
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* @v_size: the vertical size of the window in pixels.
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*/
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struct rkisp1_cif_isp_window {
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__u16 h_offs;
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__u16 v_offs;
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@ -247,10 +272,29 @@ struct rkisp1_cif_isp_dpcc_config {
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__u32 rnd_offs;
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} __packed;
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/**
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* struct rkisp1_cif_isp_gamma_corr_curve - gamma curve point definition y-axis (output).
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*
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* The reset values define a linear curve which has the same effect as bypass. Reset values are:
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* gamma_y[0] = 0x0000, gamma_y[1] = 0x0100, ... gamma_y[15] = 0x0f00, gamma_y[16] = 0xfff
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*
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* @gamma_y: the values for the y-axis of gamma curve points. Each value is 12 bit.
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*/
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struct rkisp1_cif_isp_gamma_corr_curve {
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__u16 gamma_y[RKISP1_CIF_ISP_DEGAMMA_CURVE_SIZE];
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} __packed;
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/**
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* struct rkisp1_cif_isp_gamma_curve_x_axis_pnts - De-Gamma Curve definition x increments
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* (sampling points). gamma_dx0 is for the lower samples (1-8), gamma_dx1 is for the
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* higher samples (9-16). The reset values for both fields is 0x44444444. This means
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* that each sample is 4 units away from the previous one on the x-axis.
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*
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* @gamma_dx0: gamma curve sample points definitions. Bits 0:2 for sample 1. Bit 3 unused.
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* Bits 4:6 for sample 2. bit 7 unused ... Bits 28:30 for sample 8. Bit 31 unused
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* @gamma_dx1: gamma curve sample points definitions. Bits 0:2 for sample 9. Bit 3 unused.
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* Bits 4:6 for sample 10. bit 7 unused ... Bits 28:30 for sample 16. Bit 31 unused
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*/
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struct rkisp1_cif_isp_gamma_curve_x_axis_pnts {
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__u32 gamma_dx0;
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__u32 gamma_dx1;
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@ -259,8 +303,10 @@ struct rkisp1_cif_isp_gamma_curve_x_axis_pnts {
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/**
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* struct rkisp1_cif_isp_sdg_config - Configuration used by sensor degamma
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*
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* @curve_x: gamma curve point definition axis for x
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* @xa_pnts: x increments
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* @curve_r: gamma curve point definition axis for red
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* @curve_g: gamma curve point definition axis for green
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* @curve_b: gamma curve point definition axis for blue
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* @xa_pnts: x axis increments
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*/
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struct rkisp1_cif_isp_sdg_config {
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struct rkisp1_cif_isp_gamma_corr_curve curve_r;
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@ -272,7 +318,16 @@ struct rkisp1_cif_isp_sdg_config {
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/**
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* struct rkisp1_cif_isp_lsc_config - Configuration used by Lens shading correction
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*
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* refer to REF_01 for details
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* @r_data_tbl: sample table red
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* @gr_data_tbl: sample table green (red)
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* @gb_data_tbl: sample table green (blue)
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* @b_data_tbl: sample table blue
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* @x_grad_tbl: gradient table x
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* @y_grad_tbl: gradient table y
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* @x_size_tbl: size table x
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* @y_size_tbl: size table y
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* @config_width: not used at the moment
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* @config_height: not used at the moment
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*/
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struct rkisp1_cif_isp_lsc_config {
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__u32 r_data_tbl[RKISP1_CIF_ISP_LSC_DATA_TBL_SIZE];
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@ -292,6 +347,11 @@ struct rkisp1_cif_isp_lsc_config {
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/**
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* struct rkisp1_cif_isp_ie_config - Configuration used by image effects
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*
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* @effect: values from 'enum v4l2_colorfx'. Possible values are: V4L2_COLORFX_SEPIA,
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* V4L2_COLORFX_SET_CBCR, V4L2_COLORFX_AQUA, V4L2_COLORFX_EMBOSS,
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* V4L2_COLORFX_SKETCH, V4L2_COLORFX_BW, V4L2_COLORFX_NEGATIVE
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* @color_sel: bits 0:2 - colors bitmask (001 - blue, 010 - green, 100 - red).
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* bits 8:15 - Threshold value of the RGB colors for the color selection effect.
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* @eff_mat_1: 3x3 Matrix Coefficients for Emboss Effect 1
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* @eff_mat_2: 3x3 Matrix Coefficients for Emboss Effect 2
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* @eff_mat_3: 3x3 Matrix Coefficients for Emboss 3/Sketch 1
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@ -335,8 +395,8 @@ struct rkisp1_cif_isp_cproc_config {
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/**
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* struct rkisp1_cif_isp_awb_meas_config - Configuration used by auto white balance
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*
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* @awb_mode: the awb meas mode. From enum rkisp1_cif_isp_awb_mode_type.
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* @awb_wnd: white balance measurement window (in pixels)
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* (from enum rkisp1_cif_isp_awb_mode_type)
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* @max_y: only pixels values < max_y contribute to awb measurement, set to 0
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* to disable this feature
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* @min_y: only pixels values > min_y contribute to awb measurement
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@ -348,6 +408,7 @@ struct rkisp1_cif_isp_cproc_config {
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* (ucFrames=0 means 1 Frame)
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* @awb_ref_cr: reference Cr value for AWB regulation, target for AWB
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* @awb_ref_cb: reference Cb value for AWB regulation, target for AWB
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* @enable_ymax_cmp: enable Y_MAX compare (Not valid in RGB measurement mode.)
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*/
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struct rkisp1_cif_isp_awb_meas_config {
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/*
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@ -368,7 +429,15 @@ struct rkisp1_cif_isp_awb_meas_config {
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/**
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* struct rkisp1_cif_isp_awb_gain_config - Configuration used by auto white balance gain
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*
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* out_data_x = ( AWB_GEAIN_X * in_data + 128) >> 8
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* All fields in this struct are 10 bit, where:
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* 0x100h = 1, unsigned integer value, range 0 to 4 with 8 bit fractional part.
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*
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* out_data_x = ( AWB_GAIN_X * in_data + 128) >> 8
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*
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* @gain_red: gain value for red component.
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* @gain_green_r: gain value for green component in red line.
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* @gain_blue: gain value for blue component.
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* @gain_green_b: gain value for green component in blue line.
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*/
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struct rkisp1_cif_isp_awb_gain_config {
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__u16 gain_red;
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@ -380,14 +449,24 @@ struct rkisp1_cif_isp_awb_gain_config {
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/**
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* struct rkisp1_cif_isp_flt_config - Configuration used by ISP filtering
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*
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* @mode: ISP_FILT_MODE register fields (from enum rkisp1_cif_isp_flt_mode)
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* @grn_stage1: ISP_FILT_MODE register fields
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* @chr_h_mode: ISP_FILT_MODE register fields
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* @chr_v_mode: ISP_FILT_MODE register fields
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* All 4 threshold fields (thresh_*) are 10 bits.
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* All 6 factor fields (fac_*) are 6 bits.
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*
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* refer to REF_01 for details.
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* @mode: ISP_FILT_MODE register fields (from enum rkisp1_cif_isp_flt_mode)
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* @grn_stage1: Green filter stage 1 select (range 0x0...0x8)
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* @chr_h_mode: Chroma filter horizontal mode
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* @chr_v_mode: Chroma filter vertical mode
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* @thresh_bl0: If thresh_bl1 < sum_grad < thresh_bl0 then fac_bl0 is selected (blurring th)
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* @thresh_bl1: If sum_grad < thresh_bl1 then fac_bl1 is selected (blurring th)
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* @thresh_sh0: If thresh_sh0 < sum_grad < thresh_sh1 then thresh_sh0 is selected (sharpening th)
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* @thresh_sh1: If thresh_sh1 < sum_grad then thresh_sh1 is selected (sharpening th)
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* @lum_weight: Parameters for luminance weight function.
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* @fac_sh1: filter factor for sharp1 level
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* @fac_sh0: filter factor for sharp0 level
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* @fac_mid: filter factor for mid level and for static filter mode
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* @fac_bl0: filter factor for blur 0 level
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* @fac_bl1: filter factor for blur 1 level (max blur)
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*/
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struct rkisp1_cif_isp_flt_config {
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__u32 mode;
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__u8 grn_stage1;
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@ -748,8 +827,8 @@ struct rkisp1_cif_isp_ae_stat {
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/**
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* struct rkisp1_cif_isp_af_meas_val - AF measured values
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*
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* @sum: sharpness, refer to REF_01 for definition
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* @lum: luminance, refer to REF_01 for definition
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* @sum: sharpness value
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* @lum: luminance value
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*/
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struct rkisp1_cif_isp_af_meas_val {
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__u32 sum;
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@ -781,12 +860,12 @@ struct rkisp1_cif_isp_hist_stat {
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} __packed;
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/**
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* struct rkisp1_stat_buffer - Rockchip ISP1 Statistics Data
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* struct rkisp1_cif_isp_stat - Rockchip ISP1 Statistics Data
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*
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* @rkisp1_cif_isp_awb_stat: statistics data for automatic white balance
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* @rkisp1_cif_isp_ae_stat: statistics data for auto exposure
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* @rkisp1_cif_isp_af_stat: statistics data for auto focus
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* @rkisp1_cif_isp_hist_stat: statistics histogram data
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* @awb: statistics data for automatic white balance
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* @ae: statistics data for auto exposure
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* @af: statistics data for auto focus
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* @hist: statistics histogram data
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*/
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struct rkisp1_cif_isp_stat {
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struct rkisp1_cif_isp_awb_stat awb;
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@ -798,7 +877,7 @@ struct rkisp1_cif_isp_stat {
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/**
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* struct rkisp1_stat_buffer - Rockchip ISP1 Statistics Meta Data
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*
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* @meas_type: measurement types (RKISP1_CIF_ISP_STAT_ definitions)
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* @meas_type: measurement types (RKISP1_CIF_ISP_STAT_* definitions)
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* @frame_id: frame ID for sync
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* @params: statistics data
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*/
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