Add the uapi header camss-config.h defining the ISP parameter structures used by the CAMSS Offline Processing Engine (OPE) driver. This includes structures for white balance, chroma enhancement and color correction configuration.
Signed-off-by: Loic Poulain <[email protected]> --- include/uapi/linux/camss-config.h | 115 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) diff --git a/include/uapi/linux/camss-config.h b/include/uapi/linux/camss-config.h new file mode 100644 index 0000000000000000000000000000000000000000..665406969e66927e8bce83afaa9a3aae53ba2803 --- /dev/null +++ b/include/uapi/linux/camss-config.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ +/* + * Qualcomm CAMSS ISP parameters UAPI + * + * Uses the generic V4L2 extensible ISP parameters buffer format defined in + * <uapi/linux/media/v4l2-isp.h>. + * + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#ifndef _UAPI_LINUX_CAMSS_CONFIG_H +#define _UAPI_LINUX_CAMSS_CONFIG_H + +#include <linux/types.h> +#include <linux/media/v4l2-isp.h> +/** + * enum camss_params_block_type - CAMSS ISP parameter block identifiers + * + * Each value identifies one ISP processing block. The value is placed in + * the @type field of &struct v4l2_isp_params_block_header. + */ +enum camss_params_block_type { + CAMSS_PARAMS_WB_GAIN = 1, + CAMSS_PARAMS_CHROMA_ENHAN = 2, + CAMSS_PARAMS_COLOR_CORRECT = 3, + CAMSS_PARAMS_MAX, +}; + +/** + * struct camss_params_wb_gain - White Balance gains + * + * @header: generic block header; @header.type = CAMSS_PARAMS_WB_GAIN + * @g_gain: green channel gain (15uQ10) + * @b_gain: blue channel gain (15uQ10) + * @r_gain: red channel gain (15uQ10) + */ +struct camss_params_wb_gain { + struct v4l2_isp_params_block_header header; + __u16 g_gain; + __u16 b_gain; + __u16 r_gain; + __u16 _pad; +} __aligned(8); + +/** + * struct camss_params_chroma_enhan - RGB to YUV colour matrix + * + * Implements the CLC_CHROMA_ENHAN pipeline module. All coefficients are + * signed 12-bit fixed-point Q3.8 (range roughly -8.0 to +7.996). + * + * Luma (Y) row of the matrix: + * @luma_v0: R-to-Y coefficient (12sQ8, e.g. 0x04d = 0.299) + * @luma_v1: G-to-Y coefficient (12sQ8, e.g. 0x096 = 0.587) + * @luma_v2: B-to-Y coefficient (12sQ8, e.g. 0x01d = 0.114) + * @luma_k: Y output offset (9s, 0 = no offset) + * + * Chroma (Cb) row: + * @coeff_ap: Cb positive coefficient (12sQ8, e.g. 0x0e6 = 0.886) + * @coeff_am: Cb negative coefficient (12sQ8, e.g. 0xfb3 = -0.338) + * @kcb: Cb output offset (11s, 128 = +128) + * + * Chroma (Cr) row: + * @coeff_cp: Cr positive coefficient (12sQ8, e.g. 0x0b3 = 0.701) + * @coeff_cm: Cr negative coefficient (12sQ8, e.g. 0xfe3 = -0.114) + * @coeff_dp: Cr positive coefficient (12sQ8) + * @coeff_dm: Cr negative coefficient (12sQ8) + * @kcr: Cr output offset (11s, 128 = +128) + * + * @header: generic block header; @header.type = CAMSS_PARAMS_CHROMA_ENHAN + */ +struct camss_params_chroma_enhan { + struct v4l2_isp_params_block_header header; + __u16 luma_v0; + __u16 luma_v1; + __u16 luma_v2; + __u16 luma_k; + __u16 coeff_ap; + __u16 coeff_am; + __u16 coeff_cp; + __u16 coeff_cm; + __u16 coeff_dp; + __u16 coeff_dm; + __u16 kcb; + __u16 kcr; +} __aligned(8); + +/** + * struct camss_params_color_correct - colour correction matrix + * + * signed 12-bit fixed-point (Qm) + * + * Out_ch0 (g) = A0*G+B0*B+C0*R + K0 + * Out_ch1 (b) = A1*G+B1*B+C1*R + K1 + * Out_ch2 (r) = A2*G+B2*B+C2*R + K2 + * + * m = 0x0 - Coefficients are signed 12sQ7 numbers + * m = 0x1 - Coefficients are signed 12sQ8 numbers + * m = 0x2 - Coefficients are signed 12sQ9 numbers + * m = 0x3 - Coefficients are signed 12sQ10 numbers + */ +struct camss_params_color_correct { + struct v4l2_isp_params_block_header header; + __u16 a[3]; + __u16 b[3]; + __u16 c[3]; + __u16 k[3]; + __u16 m; +} __aligned(8); + +#define CAMSS_PARAMS_MAX_PAYLOAD \ + (sizeof(struct camss_params_wb_gain) +\ + sizeof(struct camss_params_chroma_enhan) +\ + sizeof(struct camss_params_color_correct)) + +#endif /* _UAPI_LINUX_CAMSS_CONFIG_H */ -- 2.34.1
