| /* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */ |
| /* |
| * bcm2835-isp.h |
| * |
| * BCM2835 ISP driver - user space header file. |
| * |
| * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd. |
| * |
| * Author: Naushir Patuck (naush@raspberrypi.com) |
| * |
| */ |
| |
| #ifndef __BCM2835_ISP_H_ |
| #define __BCM2835_ISP_H_ |
| |
| #include <linux/v4l2-controls.h> |
| |
| #define V4L2_CID_USER_BCM2835_ISP_CC_MATRIX \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0001) |
| #define V4L2_CID_USER_BCM2835_ISP_LENS_SHADING \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0002) |
| #define V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0003) |
| #define V4L2_CID_USER_BCM2835_ISP_GEQ \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0004) |
| #define V4L2_CID_USER_BCM2835_ISP_GAMMA \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0005) |
| #define V4L2_CID_USER_BCM2835_ISP_DENOISE \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0006) |
| #define V4L2_CID_USER_BCM2835_ISP_SHARPEN \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0007) |
| #define V4L2_CID_USER_BCM2835_ISP_DPC \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0008) |
| #define V4L2_CID_USER_BCM2835_ISP_CDN \ |
| (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0009) |
| /* |
| * All structs below are directly mapped onto the equivalent structs in |
| * drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h |
| * for convenience. |
| */ |
| |
| /** |
| * struct bcm2835_isp_rational - Rational value type. |
| * |
| * @num: Numerator. |
| * @den: Denominator. |
| */ |
| struct bcm2835_isp_rational { |
| __s32 num; |
| __u32 den; |
| }; |
| |
| /** |
| * struct bcm2835_isp_ccm - Colour correction matrix. |
| * |
| * @ccm: 3x3 correction matrix coefficients. |
| * @offsets: 1x3 correction offsets. |
| */ |
| struct bcm2835_isp_ccm { |
| struct bcm2835_isp_rational ccm[3][3]; |
| __s32 offsets[3]; |
| }; |
| |
| /** |
| * struct bcm2835_isp_custom_ccm - Custom CCM applied with the |
| * V4L2_CID_USER_BCM2835_ISP_CC_MATRIX ctrl. |
| * |
| * @enabled: Enable custom CCM. |
| * @ccm: Custom CCM coefficients and offsets. |
| */ |
| struct bcm2835_isp_custom_ccm { |
| __u32 enabled; |
| struct bcm2835_isp_ccm ccm; |
| }; |
| |
| /** |
| * enum bcm2835_isp_gain_format - format of the gains in the lens shading |
| * tables used with the |
| * V4L2_CID_USER_BCM2835_ISP_LENS_SHADING ctrl. |
| * |
| * @GAIN_FORMAT_U0P8_1: Gains are u0.8 format, starting at 1.0 |
| * @GAIN_FORMAT_U1P7_0: Gains are u1.7 format, starting at 0.0 |
| * @GAIN_FORMAT_U1P7_1: Gains are u1.7 format, starting at 1.0 |
| * @GAIN_FORMAT_U2P6_0: Gains are u2.6 format, starting at 0.0 |
| * @GAIN_FORMAT_U2P6_1: Gains are u2.6 format, starting at 1.0 |
| * @GAIN_FORMAT_U3P5_0: Gains are u3.5 format, starting at 0.0 |
| * @GAIN_FORMAT_U3P5_1: Gains are u3.5 format, starting at 1.0 |
| * @GAIN_FORMAT_U4P10: Gains are u4.10 format, starting at 0.0 |
| */ |
| enum bcm2835_isp_gain_format { |
| GAIN_FORMAT_U0P8_1 = 0, |
| GAIN_FORMAT_U1P7_0 = 1, |
| GAIN_FORMAT_U1P7_1 = 2, |
| GAIN_FORMAT_U2P6_0 = 3, |
| GAIN_FORMAT_U2P6_1 = 4, |
| GAIN_FORMAT_U3P5_0 = 5, |
| GAIN_FORMAT_U3P5_1 = 6, |
| GAIN_FORMAT_U4P10 = 7, |
| }; |
| |
| /** |
| * struct bcm2835_isp_lens_shading - Lens shading tables supplied with the |
| * V4L2_CID_USER_BCM2835_ISP_LENS_SHADING |
| * ctrl. |
| * |
| * @enabled: Enable lens shading. |
| * @grid_cell_size: Size of grid cells in samples (16, 32, 64, 128 or 256). |
| * @grid_width: Width of lens shading tables in grid cells. |
| * @grid_stride: Row to row distance (in grid cells) between grid cells |
| * in the same horizontal location. |
| * @grid_height: Height of lens shading tables in grid cells. |
| * @dmabuf: dmabuf file handle containing the table. |
| * @ref_transform: Reference transform - unsupported, please pass zero. |
| * @corner_sampled: Whether the gains are sampled at the corner points |
| * of the grid cells or in the cell centres. |
| * @gain_format: Format of the gains (see enum &bcm2835_isp_gain_format). |
| */ |
| struct bcm2835_isp_lens_shading { |
| __u32 enabled; |
| __u32 grid_cell_size; |
| __u32 grid_width; |
| __u32 grid_stride; |
| __u32 grid_height; |
| __s32 dmabuf; |
| __u32 ref_transform; |
| __u32 corner_sampled; |
| __u32 gain_format; |
| }; |
| |
| /** |
| * struct bcm2835_isp_black_level - Sensor black level set with the |
| * V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL ctrl. |
| * |
| * @enabled: Enable black level. |
| * @black_level_r: Black level for red channel. |
| * @black_level_g: Black level for green channels. |
| * @black_level_b: Black level for blue channel. |
| */ |
| struct bcm2835_isp_black_level { |
| __u32 enabled; |
| __u16 black_level_r; |
| __u16 black_level_g; |
| __u16 black_level_b; |
| __u8 padding[2]; /* Unused */ |
| }; |
| |
| /** |
| * struct bcm2835_isp_geq - Green equalisation parameters set with the |
| * V4L2_CID_USER_BCM2835_ISP_GEQ ctrl. |
| * |
| * @enabled: Enable green equalisation. |
| * @offset: Fixed offset of the green equalisation threshold. |
| * @slope: Slope of the green equalisation threshold. |
| */ |
| struct bcm2835_isp_geq { |
| __u32 enabled; |
| __u32 offset; |
| struct bcm2835_isp_rational slope; |
| }; |
| |
| #define BCM2835_NUM_GAMMA_PTS 33 |
| |
| /** |
| * struct bcm2835_isp_gamma - Gamma parameters set with the |
| * V4L2_CID_USER_BCM2835_ISP_GAMMA ctrl. |
| * |
| * @enabled: Enable gamma adjustment. |
| * @X: X values of the points defining the gamma curve. |
| * Values should be scaled to 16 bits. |
| * @Y: Y values of the points defining the gamma curve. |
| * Values should be scaled to 16 bits. |
| */ |
| struct bcm2835_isp_gamma { |
| __u32 enabled; |
| __u16 x[BCM2835_NUM_GAMMA_PTS]; |
| __u16 y[BCM2835_NUM_GAMMA_PTS]; |
| }; |
| |
| /** |
| * enum bcm2835_isp_cdn_mode - Mode of operation for colour denoise. |
| * |
| * @CDN_MODE_FAST: Fast (but lower quality) colour denoise |
| * algorithm, typically used for video recording. |
| * @CDN_HIGH_QUALITY: High quality (but slower) colour denoise |
| * algorithm, typically used for stills capture. |
| */ |
| enum bcm2835_isp_cdn_mode { |
| CDN_MODE_FAST = 0, |
| CDN_MODE_HIGH_QUALITY = 1, |
| }; |
| |
| /** |
| * struct bcm2835_isp_cdn - Colour denoise parameters set with the |
| * V4L2_CID_USER_BCM2835_ISP_CDN ctrl. |
| * |
| * @enabled: Enable colour denoise. |
| * @cdn_mode: Colour denoise operating mode (see enum &bcm2835_isp_cdn_mode) |
| */ |
| struct bcm2835_isp_cdn { |
| __u32 enabled; |
| __u32 mode; |
| }; |
| |
| /** |
| * struct bcm2835_isp_denoise - Denoise parameters set with the |
| * V4L2_CID_USER_BCM2835_ISP_DENOISE ctrl. |
| * |
| * @enabled: Enable denoise. |
| * @constant: Fixed offset of the noise threshold. |
| * @slope: Slope of the noise threshold. |
| * @strength: Denoise strength between 0.0 (off) and 1.0 (maximum). |
| */ |
| struct bcm2835_isp_denoise { |
| __u32 enabled; |
| __u32 constant; |
| struct bcm2835_isp_rational slope; |
| struct bcm2835_isp_rational strength; |
| }; |
| |
| /** |
| * struct bcm2835_isp_sharpen - Sharpen parameters set with the |
| * V4L2_CID_USER_BCM2835_ISP_SHARPEN ctrl. |
| * |
| * @enabled: Enable sharpening. |
| * @threshold: Threshold at which to start sharpening pixels. |
| * @strength: Strength with which pixel sharpening increases. |
| * @limit: Limit to the amount of sharpening applied. |
| */ |
| struct bcm2835_isp_sharpen { |
| __u32 enabled; |
| struct bcm2835_isp_rational threshold; |
| struct bcm2835_isp_rational strength; |
| struct bcm2835_isp_rational limit; |
| }; |
| |
| /** |
| * enum bcm2835_isp_dpc_mode - defective pixel correction (DPC) strength. |
| * |
| * @DPC_MODE_OFF: No DPC. |
| * @DPC_MODE_NORMAL: Normal DPC. |
| * @DPC_MODE_STRONG: Strong DPC. |
| */ |
| enum bcm2835_isp_dpc_mode { |
| DPC_MODE_OFF = 0, |
| DPC_MODE_NORMAL = 1, |
| DPC_MODE_STRONG = 2, |
| }; |
| |
| /** |
| * struct bcm2835_isp_dpc - Defective pixel correction (DPC) parameters set |
| * with the V4L2_CID_USER_BCM2835_ISP_DPC ctrl. |
| * |
| * @enabled: Enable DPC. |
| * @strength: DPC strength (see enum &bcm2835_isp_dpc_mode). |
| */ |
| struct bcm2835_isp_dpc { |
| __u32 enabled; |
| __u32 strength; |
| }; |
| |
| /* |
| * ISP statistics structures. |
| * |
| * The bcm2835_isp_stats structure is generated at the output of the |
| * statistics node. Note that this does not directly map onto the statistics |
| * output of the ISP HW. Instead, the MMAL firmware code maps the HW statistics |
| * to the bcm2835_isp_stats structure. |
| */ |
| #define DEFAULT_AWB_REGIONS_X 16 |
| #define DEFAULT_AWB_REGIONS_Y 12 |
| |
| #define NUM_HISTOGRAMS 2 |
| #define NUM_HISTOGRAM_BINS 128 |
| #define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y) |
| #define FLOATING_REGIONS 16 |
| #define AGC_REGIONS 16 |
| #define FOCUS_REGIONS 12 |
| |
| /** |
| * struct bcm2835_isp_stats_hist - Histogram statistics |
| * |
| * @r_hist: Red channel histogram. |
| * @g_hist: Combined green channel histogram. |
| * @b_hist: Blue channel histogram. |
| */ |
| struct bcm2835_isp_stats_hist { |
| __u32 r_hist[NUM_HISTOGRAM_BINS]; |
| __u32 g_hist[NUM_HISTOGRAM_BINS]; |
| __u32 b_hist[NUM_HISTOGRAM_BINS]; |
| }; |
| |
| /** |
| * struct bcm2835_isp_stats_region - Region sums. |
| * |
| * @counted: The number of 2x2 bayer tiles accumulated. |
| * @notcounted: The number of 2x2 bayer tiles not accumulated. |
| * @r_sum: Total sum of counted pixels in the red channel for a region. |
| * @g_sum: Total sum of counted pixels in the green channel for a region. |
| * @b_sum: Total sum of counted pixels in the blue channel for a region. |
| */ |
| struct bcm2835_isp_stats_region { |
| __u32 counted; |
| __u32 notcounted; |
| __u64 r_sum; |
| __u64 g_sum; |
| __u64 b_sum; |
| }; |
| |
| /** |
| * struct bcm2835_isp_stats_focus - Focus statistics. |
| * |
| * @contrast_val: Focus measure - accumulated output of the focus filter. |
| * In the first dimension, index [0] counts pixels below a |
| * preset threshold, and index [1] counts pixels above the |
| * threshold. In the second dimension, index [0] uses the |
| * first predefined filter, and index [1] uses the second |
| * predefined filter. |
| * @contrast_val_num: The number of counted pixels in the above accumulation. |
| */ |
| struct bcm2835_isp_stats_focus { |
| __u64 contrast_val[2][2]; |
| __u32 contrast_val_num[2][2]; |
| }; |
| |
| /** |
| * struct bcm2835_isp_stats - ISP statistics. |
| * |
| * @version: Version of the bcm2835_isp_stats structure. |
| * @size: Size of the bcm2835_isp_stats structure. |
| * @hist: Histogram statistics for the entire image. |
| * @awb_stats: Statistics for the regions defined for AWB calculations. |
| * @floating_stats: Statistics for arbitrarily placed (floating) regions. |
| * @agc_stats: Statistics for the regions defined for AGC calculations. |
| * @focus_stats: Focus filter statistics for the focus regions. |
| */ |
| struct bcm2835_isp_stats { |
| __u32 version; |
| __u32 size; |
| struct bcm2835_isp_stats_hist hist[NUM_HISTOGRAMS]; |
| struct bcm2835_isp_stats_region awb_stats[AWB_REGIONS]; |
| struct bcm2835_isp_stats_region floating_stats[FLOATING_REGIONS]; |
| struct bcm2835_isp_stats_region agc_stats[AGC_REGIONS]; |
| struct bcm2835_isp_stats_focus focus_stats[FOCUS_REGIONS]; |
| }; |
| |
| #endif /* __BCM2835_ISP_H_ */ |