/* * isppreview.c * * TI OMAP3 ISP driver - Preview module * * Copyright (C) 2010 Nokia Corporation * Copyright (C) 2009 Texas Instruments, Inc. * * Contacts: Laurent Pinchart * Sakari Ailus * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include "isp.h" #include "ispreg.h" #include "isppreview.h" /* Default values in Office Fluorescent Light for RGBtoRGB Blending */ static struct omap3isp_prev_rgbtorgb flr_rgb2rgb = { { /* RGB-RGB Matrix */ {0x01E2, 0x0F30, 0x0FEE}, {0x0F9B, 0x01AC, 0x0FB9}, {0x0FE0, 0x0EC0, 0x0260} }, /* RGB Offset */ {0x0000, 0x0000, 0x0000} }; /* Default values in Office Fluorescent Light for RGB to YUV Conversion*/ static struct omap3isp_prev_csc flr_prev_csc = { { /* CSC Coef Matrix */ {66, 129, 25}, {-38, -75, 112}, {112, -94 , -18} }, /* CSC Offset */ {0x0, 0x0, 0x0} }; /* Default values in Office Fluorescent Light for CFA Gradient*/ #define FLR_CFA_GRADTHRS_HORZ 0x28 #define FLR_CFA_GRADTHRS_VERT 0x28 /* Default values in Office Fluorescent Light for Chroma Suppression*/ #define FLR_CSUP_GAIN 0x0D #define FLR_CSUP_THRES 0xEB /* Default values in Office Fluorescent Light for Noise Filter*/ #define FLR_NF_STRGTH 0x03 /* Default values for White Balance */ #define FLR_WBAL_DGAIN 0x100 #define FLR_WBAL_COEF 0x20 /* Default values in Office Fluorescent Light for Black Adjustment*/ #define FLR_BLKADJ_BLUE 0x0 #define FLR_BLKADJ_GREEN 0x0 #define FLR_BLKADJ_RED 0x0 #define DEF_DETECT_CORRECT_VAL 0xe /* * Margins and image size limits. * * The preview engine crops several rows and columns internally depending on * which filters are enabled. To avoid format changes when the filters are * enabled or disabled (which would prevent them from being turned on or off * during streaming), the driver assumes all filters that can be configured * during streaming are enabled when computing sink crop and source format * limits. * * If a filter is disabled, additional cropping is automatically added at the * preview engine input by the driver to avoid overflow at line and frame end. * This is completely transparent for applications. * * Median filter 4 pixels * Noise filter, * Faulty pixels correction 4 pixels, 4 lines * Color suppression 2 pixels * or luma enhancement * ------------------------------------------------------------- * Maximum total 10 pixels, 4 lines * * The color suppression and luma enhancement filters are applied after bayer to * YUV conversion. They thus can crop one pixel on the left and one pixel on the * right side of the image without changing the color pattern. When both those * filters are disabled, the driver must crop the two pixels on the same side of * the image to avoid changing the bayer pattern. The left margin is thus set to * 6 pixels and the right margin to 4 pixels. */ #define PREV_MARGIN_LEFT 6 #define PREV_MARGIN_RIGHT 4 #define PREV_MARGIN_TOP 2 #define PREV_MARGIN_BOTTOM 2 #define PREV_MIN_IN_WIDTH 64 #define PREV_MIN_IN_HEIGHT 8 #define PREV_MAX_IN_HEIGHT 16384 #define PREV_MIN_OUT_WIDTH 0 #define PREV_MIN_OUT_HEIGHT 0 #define PREV_MAX_OUT_WIDTH_REV_1 1280 #define PREV_MAX_OUT_WIDTH_REV_2 3300 #define PREV_MAX_OUT_WIDTH_REV_15 4096 /* * Coefficient Tables for the submodules in Preview. * Array is initialised with the values from.the tables text file. */ /* * CFA Filter Coefficient Table * */ static u32 cfa_coef_table[4][OMAP3ISP_PREV_CFA_BLK_SIZE] = { #include "cfa_coef_table.h" }; /* * Default Gamma Correction Table - All components */ static u32 gamma_table[] = { #include "gamma_table.h" }; /* * Noise Filter Threshold table */ static u32 noise_filter_table[] = { #include "noise_filter_table.h" }; /* * Luminance Enhancement Table */ static u32 luma_enhance_table[] = { #include "luma_enhance_table.h" }; /* * preview_config_luma_enhancement - Configure the Luminance Enhancement table */ static void preview_config_luma_enhancement(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_luma *yt = ¶ms->luma; unsigned int i; isp_reg_writel(isp, ISPPRV_YENH_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < OMAP3ISP_PREV_YENH_TBL_SIZE; i++) { isp_reg_writel(isp, yt->table[i], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); } } /* * preview_enable_luma_enhancement - Enable/disable Luminance Enhancement */ static void preview_enable_luma_enhancement(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_YNENHEN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_YNENHEN); } /* * preview_enable_invalaw - Enable/disable Inverse A-Law decompression */ static void preview_enable_invalaw(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_INVALAW); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_INVALAW); } /* * preview_config_hmed - Configure the Horizontal Median Filter */ static void preview_config_hmed(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_hmed *hmed = ¶ms->hmed; isp_reg_writel(isp, (hmed->odddist == 1 ? 0 : ISPPRV_HMED_ODDDIST) | (hmed->evendist == 1 ? 0 : ISPPRV_HMED_EVENDIST) | (hmed->thres << ISPPRV_HMED_THRESHOLD_SHIFT), OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED); } /* * preview_enable_hmed - Enable/disable the Horizontal Median Filter */ static void preview_enable_hmed(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_HMEDEN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_HMEDEN); } /* * preview_config_cfa - Configure CFA Interpolation for Bayer formats * * The CFA table is organised in four blocks, one per Bayer component. The * hardware expects blocks to follow the Bayer order of the input data, while * the driver stores the table in GRBG order in memory. The blocks need to be * reordered to support non-GRBG Bayer patterns. */ static void preview_config_cfa(struct isp_prev_device *prev, const struct prev_params *params) { static const unsigned int cfa_coef_order[4][4] = { { 0, 1, 2, 3 }, /* GRBG */ { 1, 0, 3, 2 }, /* RGGB */ { 2, 3, 0, 1 }, /* BGGR */ { 3, 2, 1, 0 }, /* GBRG */ }; const unsigned int *order = cfa_coef_order[prev->params.cfa_order]; const struct omap3isp_prev_cfa *cfa = ¶ms->cfa; struct isp_device *isp = to_isp_device(prev); unsigned int i; unsigned int j; isp_reg_writel(isp, (cfa->gradthrs_vert << ISPPRV_CFA_GRADTH_VER_SHIFT) | (cfa->gradthrs_horz << ISPPRV_CFA_GRADTH_HOR_SHIFT), OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA); isp_reg_writel(isp, ISPPRV_CFA_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < 4; ++i) { const __u32 *block = cfa->table[order[i]]; for (j = 0; j < OMAP3ISP_PREV_CFA_BLK_SIZE; ++j) isp_reg_writel(isp, block[j], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); } } /* * preview_config_chroma_suppression - Configure Chroma Suppression */ static void preview_config_chroma_suppression(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_csup *cs = ¶ms->csup; isp_reg_writel(isp, cs->gain | (cs->thres << ISPPRV_CSUP_THRES_SHIFT) | (cs->hypf_en << ISPPRV_CSUP_HPYF_SHIFT), OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP); } /* * preview_enable_chroma_suppression - Enable/disable Chrominance Suppression */ static void preview_enable_chroma_suppression(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SUPEN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SUPEN); } /* * preview_config_whitebalance - Configure White Balance parameters * * Coefficient matrix always with default values. */ static void preview_config_whitebalance(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_wbal *wbal = ¶ms->wbal; u32 val; isp_reg_writel(isp, wbal->dgain, OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN); val = wbal->coef0 << ISPPRV_WBGAIN_COEF0_SHIFT; val |= wbal->coef1 << ISPPRV_WBGAIN_COEF1_SHIFT; val |= wbal->coef2 << ISPPRV_WBGAIN_COEF2_SHIFT; val |= wbal->coef3 << ISPPRV_WBGAIN_COEF3_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN); isp_reg_writel(isp, ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_0_SHIFT | ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_1_SHIFT | ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_2_SHIFT | ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_3_SHIFT | ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_0_SHIFT | ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_1_SHIFT | ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_2_SHIFT | ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_3_SHIFT | ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_0_SHIFT | ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_1_SHIFT | ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_2_SHIFT | ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_3_SHIFT | ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_0_SHIFT | ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_1_SHIFT | ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_2_SHIFT | ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_3_SHIFT, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL); } /* * preview_config_blkadj - Configure Black Adjustment */ static void preview_config_blkadj(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_blkadj *blkadj = ¶ms->blkadj; isp_reg_writel(isp, (blkadj->blue << ISPPRV_BLKADJOFF_B_SHIFT) | (blkadj->green << ISPPRV_BLKADJOFF_G_SHIFT) | (blkadj->red << ISPPRV_BLKADJOFF_R_SHIFT), OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF); } /* * preview_config_rgb_blending - Configure RGB-RGB Blending */ static void preview_config_rgb_blending(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_rgbtorgb *rgbrgb = ¶ms->rgb2rgb; u32 val; val = (rgbrgb->matrix[0][0] & 0xfff) << ISPPRV_RGB_MAT1_MTX_RR_SHIFT; val |= (rgbrgb->matrix[0][1] & 0xfff) << ISPPRV_RGB_MAT1_MTX_GR_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1); val = (rgbrgb->matrix[0][2] & 0xfff) << ISPPRV_RGB_MAT2_MTX_BR_SHIFT; val |= (rgbrgb->matrix[1][0] & 0xfff) << ISPPRV_RGB_MAT2_MTX_RG_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2); val = (rgbrgb->matrix[1][1] & 0xfff) << ISPPRV_RGB_MAT3_MTX_GG_SHIFT; val |= (rgbrgb->matrix[1][2] & 0xfff) << ISPPRV_RGB_MAT3_MTX_BG_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3); val = (rgbrgb->matrix[2][0] & 0xfff) << ISPPRV_RGB_MAT4_MTX_RB_SHIFT; val |= (rgbrgb->matrix[2][1] & 0xfff) << ISPPRV_RGB_MAT4_MTX_GB_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4); val = (rgbrgb->matrix[2][2] & 0xfff) << ISPPRV_RGB_MAT5_MTX_BB_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5); val = (rgbrgb->offset[0] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFR_SHIFT; val |= (rgbrgb->offset[1] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFG_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1); val = (rgbrgb->offset[2] & 0x3ff) << ISPPRV_RGB_OFF2_MTX_OFFB_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2); } /* * preview_config_csc - Configure Color Space Conversion (RGB to YCbYCr) */ static void preview_config_csc(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_csc *csc = ¶ms->csc; u32 val; val = (csc->matrix[0][0] & 0x3ff) << ISPPRV_CSC0_RY_SHIFT; val |= (csc->matrix[0][1] & 0x3ff) << ISPPRV_CSC0_GY_SHIFT; val |= (csc->matrix[0][2] & 0x3ff) << ISPPRV_CSC0_BY_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0); val = (csc->matrix[1][0] & 0x3ff) << ISPPRV_CSC1_RCB_SHIFT; val |= (csc->matrix[1][1] & 0x3ff) << ISPPRV_CSC1_GCB_SHIFT; val |= (csc->matrix[1][2] & 0x3ff) << ISPPRV_CSC1_BCB_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1); val = (csc->matrix[2][0] & 0x3ff) << ISPPRV_CSC2_RCR_SHIFT; val |= (csc->matrix[2][1] & 0x3ff) << ISPPRV_CSC2_GCR_SHIFT; val |= (csc->matrix[2][2] & 0x3ff) << ISPPRV_CSC2_BCR_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2); val = (csc->offset[0] & 0xff) << ISPPRV_CSC_OFFSET_Y_SHIFT; val |= (csc->offset[1] & 0xff) << ISPPRV_CSC_OFFSET_CB_SHIFT; val |= (csc->offset[2] & 0xff) << ISPPRV_CSC_OFFSET_CR_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET); } /* * preview_config_yc_range - Configure the max and min Y and C values */ static void preview_config_yc_range(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_yclimit *yc = ¶ms->yclimit; isp_reg_writel(isp, yc->maxC << ISPPRV_SETUP_YC_MAXC_SHIFT | yc->maxY << ISPPRV_SETUP_YC_MAXY_SHIFT | yc->minC << ISPPRV_SETUP_YC_MINC_SHIFT | yc->minY << ISPPRV_SETUP_YC_MINY_SHIFT, OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC); } /* * preview_config_dcor - Configure Couplet Defect Correction */ static void preview_config_dcor(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_dcor *dcor = ¶ms->dcor; isp_reg_writel(isp, dcor->detect_correct[0], OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0); isp_reg_writel(isp, dcor->detect_correct[1], OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1); isp_reg_writel(isp, dcor->detect_correct[2], OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2); isp_reg_writel(isp, dcor->detect_correct[3], OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DCCOUP, dcor->couplet_mode_en ? ISPPRV_PCR_DCCOUP : 0); } /* * preview_enable_dcor - Enable/disable Couplet Defect Correction */ static void preview_enable_dcor(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DCOREN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DCOREN); } /* * preview_enable_drkframe_capture - Enable/disable Dark Frame Capture */ static void preview_enable_drkframe_capture(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DRKFCAP); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DRKFCAP); } /* * preview_enable_drkframe - Enable/disable Dark Frame Subtraction */ static void preview_enable_drkframe(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DRKFEN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DRKFEN); } /* * preview_config_noisefilter - Configure the Noise Filter */ static void preview_config_noisefilter(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_nf *nf = ¶ms->nf; unsigned int i; isp_reg_writel(isp, nf->spread, OMAP3_ISP_IOMEM_PREV, ISPPRV_NF); isp_reg_writel(isp, ISPPRV_NF_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < OMAP3ISP_PREV_NF_TBL_SIZE; i++) { isp_reg_writel(isp, nf->table[i], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); } } /* * preview_enable_noisefilter - Enable/disable the Noise Filter */ static void preview_enable_noisefilter(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_NFEN); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_NFEN); } /* * preview_config_gammacorrn - Configure the Gamma Correction tables */ static void preview_config_gammacorrn(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); const struct omap3isp_prev_gtables *gt = ¶ms->gamma; unsigned int i; isp_reg_writel(isp, ISPPRV_REDGAMMA_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++) isp_reg_writel(isp, gt->red[i], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); isp_reg_writel(isp, ISPPRV_GREENGAMMA_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++) isp_reg_writel(isp, gt->green[i], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); isp_reg_writel(isp, ISPPRV_BLUEGAMMA_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR); for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++) isp_reg_writel(isp, gt->blue[i], OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA); } /* * preview_enable_gammacorrn - Enable/disable Gamma Correction * * When gamma correction is disabled, the module is bypassed and its output is * the 8 MSB of the 10-bit input . */ static void preview_enable_gammacorrn(struct isp_prev_device *prev, bool enable) { struct isp_device *isp = to_isp_device(prev); if (enable) isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_GAMMA_BYPASS); else isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_GAMMA_BYPASS); } /* * preview_config_contrast - Configure the Contrast * * Value should be programmed before enabling the module. */ static void preview_config_contrast(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT, 0xff << ISPPRV_CNT_BRT_CNT_SHIFT, params->contrast << ISPPRV_CNT_BRT_CNT_SHIFT); } /* * preview_config_brightness - Configure the Brightness */ static void preview_config_brightness(struct isp_prev_device *prev, const struct prev_params *params) { struct isp_device *isp = to_isp_device(prev); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT, 0xff << ISPPRV_CNT_BRT_BRT_SHIFT, params->brightness << ISPPRV_CNT_BRT_BRT_SHIFT); } /* * preview_update_contrast - Updates the contrast. * @contrast: Pointer to hold the current programmed contrast value. * * Value should be programmed before enabling the module. */ static void preview_update_contrast(struct isp_prev_device *prev, u8 contrast) { struct prev_params *params; unsigned long flags; spin_lock_irqsave(&prev->params.lock, flags); params = (prev->params.active & OMAP3ISP_PREV_CONTRAST) ? &prev->params.params[0] : &prev->params.params[1]; if (params->contrast != (contrast * ISPPRV_CONTRAST_UNITS)) { params->contrast = contrast * ISPPRV_CONTRAST_UNITS; params->update |= OMAP3ISP_PREV_CONTRAST; } spin_unlock_irqrestore(&prev->params.lock, flags); } /* * preview_update_brightness - Updates the brightness in preview module. * @brightness: Pointer to hold the current programmed brightness value. * */ static void preview_update_brightness(struct isp_prev_device *prev, u8 brightness) { struct prev_params *params; unsigned long flags; spin_lock_irqsave(&prev->params.lock, flags); params = (prev->params.active & OMAP3ISP_PREV_BRIGHTNESS) ? &prev->params.params[0] : &prev->params.params[1]; if (params->brightness != (brightness * ISPPRV_BRIGHT_UNITS)) { params->brightness = brightness * ISPPRV_BRIGHT_UNITS; params->update |= OMAP3ISP_PREV_BRIGHTNESS; } spin_unlock_irqrestore(&prev->params.lock, flags); } static u32 preview_params_lock(struct isp_prev_device *prev, u32 update, bool shadow) { u32 active = prev->params.active; if (shadow) { /* Mark all shadow parameters we are going to touch as busy. */ prev->params.params[0].busy |= ~active & update; prev->params.params[1].busy |= active & update; } else { /* Mark all active parameters we are going to touch as busy. */ update = (prev->params.params[0].update & active) | (prev->params.params[1].update & ~active); prev->params.params[0].busy |= active & update; prev->params.params[1].busy |= ~active & update; } return update; } static void preview_params_unlock(struct isp_prev_device *prev, u32 update, bool shadow) { u32 active = prev->params.active; if (shadow) { /* Set the update flag for shadow parameters that have been * updated and clear the busy flag for all shadow parameters. */ prev->params.params[0].update |= (~active & update); prev->params.params[1].update |= (active & update); prev->params.params[0].busy &= active; prev->params.params[1].busy &= ~active; } else { /* Clear the update flag for active parameters that have been * applied and the busy flag for all active parameters. */ prev->params.params[0].update &= ~(active & update); prev->params.params[1].update &= ~(~active & update); prev->params.params[0].busy &= ~active; prev->params.params[1].busy &= active; } } static void preview_params_switch(struct isp_prev_device *prev) { u32 to_switch; /* Switch active parameters with updated shadow parameters when the * shadow parameter has been updated and neither the active not the * shadow parameter is busy. */ to_switch = (prev->params.params[0].update & ~prev->params.active) | (prev->params.params[1].update & prev->params.active); to_switch &= ~(prev->params.params[0].busy | prev->params.params[1].busy); if (to_switch == 0) return; prev->params.active ^= to_switch; /* Remove the update flag for the shadow copy of parameters we have * switched. */ prev->params.params[0].update &= ~(~prev->params.active & to_switch); prev->params.params[1].update &= ~(prev->params.active & to_switch); } /* preview parameters update structure */ struct preview_update { void (*config)(struct isp_prev_device *, const struct prev_params *); void (*enable)(struct isp_prev_device *, bool); unsigned int param_offset; unsigned int param_size; unsigned int config_offset; bool skip; }; /* Keep the array indexed by the OMAP3ISP_PREV_* bit number. */ static const struct preview_update update_attrs[] = { /* OMAP3ISP_PREV_LUMAENH */ { preview_config_luma_enhancement, preview_enable_luma_enhancement, offsetof(struct prev_params, luma), FIELD_SIZEOF(struct prev_params, luma), offsetof(struct omap3isp_prev_update_config, luma), }, /* OMAP3ISP_PREV_INVALAW */ { NULL, preview_enable_invalaw, }, /* OMAP3ISP_PREV_HRZ_MED */ { preview_config_hmed, preview_enable_hmed, offsetof(struct prev_params, hmed), FIELD_SIZEOF(struct prev_params, hmed), offsetof(struct omap3isp_prev_update_config, hmed), }, /* OMAP3ISP_PREV_CFA */ { preview_config_cfa, NULL, offsetof(struct prev_params, cfa), FIELD_SIZEOF(struct prev_params, cfa), offsetof(struct omap3isp_prev_update_config, cfa), }, /* OMAP3ISP_PREV_CHROMA_SUPP */ { preview_config_chroma_suppression, preview_enable_chroma_suppression, offsetof(struct prev_params, csup), FIELD_SIZEOF(struct prev_params, csup), offsetof(struct omap3isp_prev_update_config, csup), }, /* OMAP3ISP_PREV_WB */ { preview_config_whitebalance, NULL, offsetof(struct prev_params, wbal), FIELD_SIZEOF(struct prev_params, wbal), offsetof(struct omap3isp_prev_update_config, wbal), }, /* OMAP3ISP_PREV_BLKADJ */ { preview_config_blkadj, NULL, offsetof(struct prev_params, blkadj), FIELD_SIZEOF(struct prev_params, blkadj), offsetof(struct omap3isp_prev_update_config, blkadj), }, /* OMAP3ISP_PREV_RGB2RGB */ { preview_config_rgb_blending, NULL, offsetof(struct prev_params, rgb2rgb), FIELD_SIZEOF(struct prev_params, rgb2rgb), offsetof(struct omap3isp_prev_update_config, rgb2rgb), }, /* OMAP3ISP_PREV_COLOR_CONV */ { preview_config_csc, NULL, offsetof(struct prev_params, csc), FIELD_SIZEOF(struct prev_params, csc), offsetof(struct omap3isp_prev_update_config, csc), }, /* OMAP3ISP_PREV_YC_LIMIT */ { preview_config_yc_range, NULL, offsetof(struct prev_params, yclimit), FIELD_SIZEOF(struct prev_params, yclimit), offsetof(struct omap3isp_prev_update_config, yclimit), }, /* OMAP3ISP_PREV_DEFECT_COR */ { preview_config_dcor, preview_enable_dcor, offsetof(struct prev_params, dcor), FIELD_SIZEOF(struct prev_params, dcor), offsetof(struct omap3isp_prev_update_config, dcor), }, /* Previously OMAP3ISP_PREV_GAMMABYPASS, not used anymore */ { NULL, NULL, }, /* OMAP3ISP_PREV_DRK_FRM_CAPTURE */ { NULL, preview_enable_drkframe_capture, }, /* OMAP3ISP_PREV_DRK_FRM_SUBTRACT */ { NULL, preview_enable_drkframe, }, /* OMAP3ISP_PREV_LENS_SHADING */ { NULL, preview_enable_drkframe, }, /* OMAP3ISP_PREV_NF */ { preview_config_noisefilter, preview_enable_noisefilter, offsetof(struct prev_params, nf), FIELD_SIZEOF(struct prev_params, nf), offsetof(struct omap3isp_prev_update_config, nf), }, /* OMAP3ISP_PREV_GAMMA */ { preview_config_gammacorrn, preview_enable_gammacorrn, offsetof(struct prev_params, gamma), FIELD_SIZEOF(struct prev_params, gamma), offsetof(struct omap3isp_prev_update_config, gamma), }, /* OMAP3ISP_PREV_CONTRAST */ { preview_config_contrast, NULL, 0, 0, 0, true, }, /* OMAP3ISP_PREV_BRIGHTNESS */ { preview_config_brightness, NULL, 0, 0, 0, true, }, }; /* * preview_config - Copy and update local structure with userspace preview * configuration. * @prev: ISP preview engine * @cfg: Configuration * * Return zero if success or -EFAULT if the configuration can't be copied from * userspace. */ static int preview_config(struct isp_prev_device *prev, struct omap3isp_prev_update_config *cfg) { unsigned long flags; unsigned int i; int rval = 0; u32 update; u32 active; if (cfg->update == 0) return 0; /* Mark the shadow parameters we're going to update as busy. */ spin_lock_irqsave(&prev->params.lock, flags); preview_params_lock(prev, cfg->update, true); active = prev->params.active; spin_unlock_irqrestore(&prev->params.lock, flags); update = 0; for (i = 0; i < ARRAY_SIZE(update_attrs); i++) { const struct preview_update *attr = &update_attrs[i]; struct prev_params *params; unsigned int bit = 1 << i; if (attr->skip || !(cfg->update & bit)) continue; params = &prev->params.params[!!(active & bit)]; if (cfg->flag & bit) { void __user *from = *(void * __user *) ((void *)cfg + attr->config_offset); void *to = (void *)params + attr->param_offset; size_t size = attr->param_size; if (to && from && size) { if (copy_from_user(to, from, size)) { rval = -EFAULT; break; } } params->features |= bit; } else { params->features &= ~bit; } update |= bit; } spin_lock_irqsave(&prev->params.lock, flags); preview_params_unlock(prev, update, true); preview_params_switch(prev); spin_unlock_irqrestore(&prev->params.lock, flags); return rval; } /* * preview_setup_hw - Setup preview registers and/or internal memory * @prev: pointer to preview private structure * @update: Bitmask of parameters to setup * @active: Bitmask of parameters active in set 0 * Note: can be called from interrupt context * Return none */ static void preview_setup_hw(struct isp_prev_device *prev, u32 update, u32 active) { unsigned int i; u32 features; if (update == 0) return; features = (prev->params.params[0].features & active) | (prev->params.params[1].features & ~active); for (i = 0; i < ARRAY_SIZE(update_attrs); i++) { const struct preview_update *attr = &update_attrs[i]; struct prev_params *params; unsigned int bit = 1 << i; if (!(update & bit)) continue; params = &prev->params.params[!(active & bit)]; if (params->features & bit) { if (attr->config) attr->config(prev, params); if (attr->enable) attr->enable(prev, true); } else { if (attr->enable) attr->enable(prev, false); } } } /* * preview_config_ycpos - Configure byte layout of YUV image. * @prev: pointer to previewer private structure * @pixelcode: pixel code */ static void preview_config_ycpos(struct isp_prev_device *prev, enum v4l2_mbus_pixelcode pixelcode) { struct isp_device *isp = to_isp_device(prev); enum preview_ycpos_mode mode; switch (pixelcode) { case V4L2_MBUS_FMT_YUYV8_1X16: mode = YCPOS_CrYCbY; break; case V4L2_MBUS_FMT_UYVY8_1X16: mode = YCPOS_YCrYCb; break; default: return; } isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_YCPOS_CrYCbY, mode << ISPPRV_PCR_YCPOS_SHIFT); } /* * preview_config_averager - Enable / disable / configure averager * @average: Average value to be configured. */ static void preview_config_averager(struct isp_prev_device *prev, u8 average) { struct isp_device *isp = to_isp_device(prev); isp_reg_writel(isp, ISPPRV_AVE_EVENDIST_2 << ISPPRV_AVE_EVENDIST_SHIFT | ISPPRV_AVE_ODDDIST_2 << ISPPRV_AVE_ODDDIST_SHIFT | average, OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE); } /* * preview_config_input_format - Configure the input format * @prev: The preview engine * @info: Sink pad format information * * Enable and configure CFA interpolation for Bayer formats and disable it for * greyscale formats. * * The CFA table is organised in four blocks, one per Bayer component. The * hardware expects blocks to follow the Bayer order of the input data, while * the driver stores the table in GRBG order in memory. The blocks need to be * reordered to support non-GRBG Bayer patterns. */ static void preview_config_input_format(struct isp_prev_device *prev, const struct isp_format_info *info) { struct isp_device *isp = to_isp_device(prev); struct prev_params *params; if (info->width == 8) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_WIDTH); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_WIDTH); switch (info->flavor) { case V4L2_MBUS_FMT_SGRBG8_1X8: prev->params.cfa_order = 0; break; case V4L2_MBUS_FMT_SRGGB8_1X8: prev->params.cfa_order = 1; break; case V4L2_MBUS_FMT_SBGGR8_1X8: prev->params.cfa_order = 2; break; case V4L2_MBUS_FMT_SGBRG8_1X8: prev->params.cfa_order = 3; break; default: /* Disable CFA for non-Bayer formats. */ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAEN); return; } isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAEN); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAFMT_MASK, ISPPRV_PCR_CFAFMT_BAYER); params = (prev->params.active & OMAP3ISP_PREV_CFA) ? &prev->params.params[0] : &prev->params.params[1]; preview_config_cfa(prev, params); } /* * preview_config_input_size - Configure the input frame size * * The preview engine crops several rows and columns internally depending on * which processing blocks are enabled. The driver assumes all those blocks are * enabled when reporting source pad formats to userspace. If this assumption is * not true, rows and columns must be manually cropped at the preview engine * input to avoid overflows at the end of lines and frames. * * See the explanation at the PREV_MARGIN_* definitions for more details. */ static void preview_config_input_size(struct isp_prev_device *prev, u32 active) { const struct v4l2_mbus_framefmt *format = &prev->formats[PREV_PAD_SINK]; struct isp_device *isp = to_isp_device(prev); unsigned int sph = prev->crop.left; unsigned int eph = prev->crop.left + prev->crop.width - 1; unsigned int slv = prev->crop.top; unsigned int elv = prev->crop.top + prev->crop.height - 1; u32 features; if (format->code != V4L2_MBUS_FMT_Y8_1X8 && format->code != V4L2_MBUS_FMT_Y10_1X10) { sph -= 2; eph += 2; slv -= 2; elv += 2; } features = (prev->params.params[0].features & active) | (prev->params.params[1].features & ~active); if (features & (OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF)) { sph -= 2; eph += 2; slv -= 2; elv += 2; } if (features & OMAP3ISP_PREV_HRZ_MED) { sph -= 2; eph += 2; } if (features & (OMAP3ISP_PREV_CHROMA_SUPP | OMAP3ISP_PREV_LUMAENH)) sph -= 2; isp_reg_writel(isp, (sph << ISPPRV_HORZ_INFO_SPH_SHIFT) | eph, OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO); isp_reg_writel(isp, (slv << ISPPRV_VERT_INFO_SLV_SHIFT) | elv, OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO); } /* * preview_config_inlineoffset - Configures the Read address line offset. * @prev: Preview module * @offset: Line offset * * According to the TRM, the line offset must be aligned on a 32 bytes boundary. * However, a hardware bug requires the memory start address to be aligned on a * 64 bytes boundary, so the offset probably should be aligned on 64 bytes as * well. */ static void preview_config_inlineoffset(struct isp_prev_device *prev, u32 offset) { struct isp_device *isp = to_isp_device(prev); isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV, ISPPRV_RADR_OFFSET); } /* * preview_set_inaddr - Sets memory address of input frame. * @addr: 32bit memory address aligned on 32byte boundary. * * Configures the memory address from which the input frame is to be read. */ static void preview_set_inaddr(struct isp_prev_device *prev, u32 addr) { struct isp_device *isp = to_isp_device(prev); isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR); } /* * preview_config_outlineoffset - Configures the Write address line offset. * @offset: Line Offset for the preview output. * * The offset must be a multiple of 32 bytes. */ static void preview_config_outlineoffset(struct isp_prev_device *prev, u32 offset) { struct isp_device *isp = to_isp_device(prev); isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV, ISPPRV_WADD_OFFSET); } /* * preview_set_outaddr - Sets the memory address to store output frame * @addr: 32bit memory address aligned on 32byte boundary. * * Configures the memory address to which the output frame is written. */ static void preview_set_outaddr(struct isp_prev_device *prev, u32 addr) { struct isp_device *isp = to_isp_device(prev); isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR); } static void preview_adjust_bandwidth(struct isp_prev_device *prev) { struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity); struct isp_device *isp = to_isp_device(prev); const struct v4l2_mbus_framefmt *ifmt = &prev->formats[PREV_PAD_SINK]; unsigned long l3_ick = pipe->l3_ick; struct v4l2_fract *timeperframe; unsigned int cycles_per_frame; unsigned int requests_per_frame; unsigned int cycles_per_request; unsigned int minimum; unsigned int maximum; unsigned int value; if (prev->input != PREVIEW_INPUT_MEMORY) { isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, ISPSBL_SDR_REQ_PRV_EXP_MASK); return; } /* Compute the minimum number of cycles per request, based on the * pipeline maximum data rate. This is an absolute lower bound if we * don't want SBL overflows, so round the value up. */ cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1, pipe->max_rate); minimum = DIV_ROUND_UP(cycles_per_request, 32); /* Compute the maximum number of cycles per request, based on the * requested frame rate. This is a soft upper bound to achieve a frame * rate equal or higher than the requested value, so round the value * down. */ timeperframe = &pipe->max_timeperframe; requests_per_frame = DIV_ROUND_UP(ifmt->width * 2, 256) * ifmt->height; cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator, timeperframe->denominator); cycles_per_request = cycles_per_frame / requests_per_frame; maximum = cycles_per_request / 32; value = max(minimum, maximum); dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, ISPSBL_SDR_REQ_PRV_EXP_MASK, value << ISPSBL_SDR_REQ_PRV_EXP_SHIFT); } /* * omap3isp_preview_busy - Gets busy state of preview module. */ int omap3isp_preview_busy(struct isp_prev_device *prev) { struct isp_device *isp = to_isp_device(prev); return isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR) & ISPPRV_PCR_BUSY; } /* * omap3isp_preview_restore_context - Restores the values of preview registers */ void omap3isp_preview_restore_context(struct isp_device *isp) { struct isp_prev_device *prev = &isp->isp_prev; const u32 update = OMAP3ISP_PREV_FEATURES_END - 1; prev->params.params[0].update = prev->params.active & update; prev->params.params[1].update = ~prev->params.active & update; preview_setup_hw(prev, update, prev->params.active); prev->params.params[0].update = 0; prev->params.params[1].update = 0; } /* * preview_print_status - Dump preview module registers to the kernel log */ #define PREV_PRINT_REGISTER(isp, name)\ dev_dbg(isp->dev, "###PRV " #name "=0x%08x\n", \ isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_##name)) static void preview_print_status(struct isp_prev_device *prev) { struct isp_device *isp = to_isp_device(prev); dev_dbg(isp->dev, "-------------Preview Register dump----------\n"); PREV_PRINT_REGISTER(isp, PCR); PREV_PRINT_REGISTER(isp, HORZ_INFO); PREV_PRINT_REGISTER(isp, VERT_INFO); PREV_PRINT_REGISTER(isp, RSDR_ADDR); PREV_PRINT_REGISTER(isp, RADR_OFFSET); PREV_PRINT_REGISTER(isp, DSDR_ADDR); PREV_PRINT_REGISTER(isp, DRKF_OFFSET); PREV_PRINT_REGISTER(isp, WSDR_ADDR); PREV_PRINT_REGISTER(isp, WADD_OFFSET); PREV_PRINT_REGISTER(isp, AVE); PREV_PRINT_REGISTER(isp, HMED); PREV_PRINT_REGISTER(isp, NF); PREV_PRINT_REGISTER(isp, WB_DGAIN); PREV_PRINT_REGISTER(isp, WBGAIN); PREV_PRINT_REGISTER(isp, WBSEL); PREV_PRINT_REGISTER(isp, CFA); PREV_PRINT_REGISTER(isp, BLKADJOFF); PREV_PRINT_REGISTER(isp, RGB_MAT1); PREV_PRINT_REGISTER(isp, RGB_MAT2); PREV_PRINT_REGISTER(isp, RGB_MAT3); PREV_PRINT_REGISTER(isp, RGB_MAT4); PREV_PRINT_REGISTER(isp, RGB_MAT5); PREV_PRINT_REGISTER(isp, RGB_OFF1); PREV_PRINT_REGISTER(isp, RGB_OFF2); PREV_PRINT_REGISTER(isp, CSC0); PREV_PRINT_REGISTER(isp, CSC1); PREV_PRINT_REGISTER(isp, CSC2); PREV_PRINT_REGISTER(isp, CSC_OFFSET); PREV_PRINT_REGISTER(isp, CNT_BRT); PREV_PRINT_REGISTER(isp, CSUP); PREV_PRINT_REGISTER(isp, SETUP_YC); PREV_PRINT_REGISTER(isp, SET_TBL_ADDR); PREV_PRINT_REGISTER(isp, CDC_THR0); PREV_PRINT_REGISTER(isp, CDC_THR1); PREV_PRINT_REGISTER(isp, CDC_THR2); PREV_PRINT_REGISTER(isp, CDC_THR3); dev_dbg(isp->dev, "--------------------------------------------\n"); } /* * preview_init_params - init image processing parameters. * @prev: pointer to previewer private structure */ static void preview_init_params(struct isp_prev_device *prev) { struct prev_params *params; unsigned int i; spin_lock_init(&prev->params.lock); prev->params.active = ~0; prev->params.params[0].busy = 0; prev->params.params[0].update = OMAP3ISP_PREV_FEATURES_END - 1; prev->params.params[1].busy = 0; prev->params.params[1].update = 0; params = &prev->params.params[0]; /* Init values */ params->contrast = ISPPRV_CONTRAST_DEF * ISPPRV_CONTRAST_UNITS; params->brightness = ISPPRV_BRIGHT_DEF * ISPPRV_BRIGHT_UNITS; params->cfa.format = OMAP3ISP_CFAFMT_BAYER; memcpy(params->cfa.table, cfa_coef_table, sizeof(params->cfa.table)); params->cfa.gradthrs_horz = FLR_CFA_GRADTHRS_HORZ; params->cfa.gradthrs_vert = FLR_CFA_GRADTHRS_VERT; params->csup.gain = FLR_CSUP_GAIN; params->csup.thres = FLR_CSUP_THRES; params->csup.hypf_en = 0; memcpy(params->luma.table, luma_enhance_table, sizeof(params->luma.table)); params->nf.spread = FLR_NF_STRGTH; memcpy(params->nf.table, noise_filter_table, sizeof(params->nf.table)); params->dcor.couplet_mode_en = 1; for (i = 0; i < OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS; i++) params->dcor.detect_correct[i] = DEF_DETECT_CORRECT_VAL; memcpy(params->gamma.blue, gamma_table, sizeof(params->gamma.blue)); memcpy(params->gamma.green, gamma_table, sizeof(params->gamma.green)); memcpy(params->gamma.red, gamma_table, sizeof(params->gamma.red)); params->wbal.dgain = FLR_WBAL_DGAIN; params->wbal.coef0 = FLR_WBAL_COEF; params->wbal.coef1 = FLR_WBAL_COEF; params->wbal.coef2 = FLR_WBAL_COEF; params->wbal.coef3 = FLR_WBAL_COEF; params->blkadj.red = FLR_BLKADJ_RED; params->blkadj.green = FLR_BLKADJ_GREEN; params->blkadj.blue = FLR_BLKADJ_BLUE; params->rgb2rgb = flr_rgb2rgb; params->csc = flr_prev_csc; params->yclimit.minC = ISPPRV_YC_MIN; params->yclimit.maxC = ISPPRV_YC_MAX; params->yclimit.minY = ISPPRV_YC_MIN; params->yclimit.maxY = ISPPRV_YC_MAX; params->features = OMAP3ISP_PREV_CFA | OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF | OMAP3ISP_PREV_GAMMA | OMAP3ISP_PREV_BLKADJ | OMAP3ISP_PREV_YC_LIMIT | OMAP3ISP_PREV_RGB2RGB | OMAP3ISP_PREV_COLOR_CONV | OMAP3ISP_PREV_WB | OMAP3ISP_PREV_BRIGHTNESS | OMAP3ISP_PREV_CONTRAST; } /* * preview_max_out_width - Handle previewer hardware output limitations * @prev: pointer to previewer private structure * returns maximum width output for current isp revision */ static unsigned int preview_max_out_width(struct isp_prev_device *prev) { struct isp_device *isp = to_isp_device(prev); switch (isp->revision) { case ISP_REVISION_1_0: return PREV_MAX_OUT_WIDTH_REV_1; case ISP_REVISION_2_0: default: return PREV_MAX_OUT_WIDTH_REV_2; case ISP_REVISION_15_0: return PREV_MAX_OUT_WIDTH_REV_15; } } static void preview_configure(struct isp_prev_device *prev) { struct isp_device *isp = to_isp_device(prev); const struct isp_format_info *info; struct v4l2_mbus_framefmt *format; unsigned long flags; u32 update; u32 active; spin_lock_irqsave(&prev->params.lock, flags); /* Mark all active parameters we are going to touch as busy. */ update = preview_params_lock(prev, 0, false); active = prev->params.active; spin_unlock_irqrestore(&prev->params.lock, flags); /* PREV_PAD_SINK */ format = &prev->formats[PREV_PAD_SINK]; info = omap3isp_video_format_info(format->code); preview_adjust_bandwidth(prev); preview_config_input_format(prev, info); preview_config_input_size(prev, active); if (prev->input == PREVIEW_INPUT_CCDC) preview_config_inlineoffset(prev, 0); else preview_config_inlineoffset(prev, ALIGN(format->width, 0x20) * info->bpp); preview_setup_hw(prev, update, active); /* PREV_PAD_SOURCE */ format = &prev->formats[PREV_PAD_SOURCE]; if (prev->output & PREVIEW_OUTPUT_MEMORY) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SDRPORT); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SDRPORT); if (prev->output & PREVIEW_OUTPUT_RESIZER) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_RSZPORT); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_RSZPORT); if (prev->output & PREVIEW_OUTPUT_MEMORY) preview_config_outlineoffset(prev, ALIGN(format->width, 0x10) * 2); preview_config_averager(prev, 0); preview_config_ycpos(prev, format->code); spin_lock_irqsave(&prev->params.lock, flags); preview_params_unlock(prev, update, false); spin_unlock_irqrestore(&prev->params.lock, flags); } /* ----------------------------------------------------------------------------- * Interrupt handling */ static void preview_enable_oneshot(struct isp_prev_device *prev) { struct isp_device *isp = to_isp_device(prev); /* The PCR.SOURCE bit is automatically reset to 0 when the PCR.ENABLE * bit is set. As the preview engine is used in single-shot mode, we * need to set PCR.SOURCE before enabling the preview engine. */ if (prev->input == PREVIEW_INPUT_MEMORY) isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SOURCE); isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_EN | ISPPRV_PCR_ONESHOT); } void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev) { /* * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun * condition, the module was paused and now we have a buffer queued * on the output again. Restart the pipeline if running in continuous * mode. */ if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS && prev->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { preview_enable_oneshot(prev); isp_video_dmaqueue_flags_clr(&prev->video_out); } } static void preview_isr_buffer(struct isp_prev_device *prev) { struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity); struct isp_buffer *buffer; int restart = 0; if (prev->input == PREVIEW_INPUT_MEMORY) { buffer = omap3isp_video_buffer_next(&prev->video_in); if (buffer != NULL) preview_set_inaddr(prev, buffer->dma); pipe->state |= ISP_PIPELINE_IDLE_INPUT; } if (prev->output & PREVIEW_OUTPUT_MEMORY) { buffer = omap3isp_video_buffer_next(&prev->video_out); if (buffer != NULL) { preview_set_outaddr(prev, buffer->dma); restart = 1; } pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; } switch (prev->state) { case ISP_PIPELINE_STREAM_SINGLESHOT: if (isp_pipeline_ready(pipe)) omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_SINGLESHOT); break; case ISP_PIPELINE_STREAM_CONTINUOUS: /* If an underrun occurs, the video queue operation handler will * restart the preview engine. Otherwise restart it immediately. */ if (restart) preview_enable_oneshot(prev); break; case ISP_PIPELINE_STREAM_STOPPED: default: return; } } /* * omap3isp_preview_isr - ISP preview engine interrupt handler * * Manage the preview engine video buffers and configure shadowed registers. */ void omap3isp_preview_isr(struct isp_prev_device *prev) { unsigned long flags; u32 update; u32 active; if (omap3isp_module_sync_is_stopping(&prev->wait, &prev->stopping)) return; spin_lock_irqsave(&prev->params.lock, flags); preview_params_switch(prev); update = preview_params_lock(prev, 0, false); active = prev->params.active; spin_unlock_irqrestore(&prev->params.lock, flags); preview_setup_hw(prev, update, active); preview_config_input_size(prev, active); if (prev->input == PREVIEW_INPUT_MEMORY || prev->output & PREVIEW_OUTPUT_MEMORY) preview_isr_buffer(prev); else if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS) preview_enable_oneshot(prev); spin_lock_irqsave(&prev->params.lock, flags); preview_params_unlock(prev, update, false); spin_unlock_irqrestore(&prev->params.lock, flags); } /* ----------------------------------------------------------------------------- * ISP video operations */ static int preview_video_queue(struct isp_video *video, struct isp_buffer *buffer) { struct isp_prev_device *prev = &video->isp->isp_prev; if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) preview_set_inaddr(prev, buffer->dma); if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) preview_set_outaddr(prev, buffer->dma); return 0; } static const struct isp_video_operations preview_video_ops = { .queue = preview_video_queue, }; /* ----------------------------------------------------------------------------- * V4L2 subdev operations */ /* * preview_s_ctrl - Handle set control subdev method * @ctrl: pointer to v4l2 control structure */ static int preview_s_ctrl(struct v4l2_ctrl *ctrl) { struct isp_prev_device *prev = container_of(ctrl->handler, struct isp_prev_device, ctrls); switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: preview_update_brightness(prev, ctrl->val); break; case V4L2_CID_CONTRAST: preview_update_contrast(prev, ctrl->val); break; } return 0; } static const struct v4l2_ctrl_ops preview_ctrl_ops = { .s_ctrl = preview_s_ctrl, }; /* * preview_ioctl - Handle preview module private ioctl's * @sd: pointer to v4l2 subdev structure * @cmd: configuration command * @arg: configuration argument * return -EINVAL or zero on success */ static long preview_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); switch (cmd) { case VIDIOC_OMAP3ISP_PRV_CFG: return preview_config(prev, arg); default: return -ENOIOCTLCMD; } } /* * preview_set_stream - Enable/Disable streaming on preview subdev * @sd : pointer to v4l2 subdev structure * @enable: 1 == Enable, 0 == Disable * return -EINVAL or zero on success */ static int preview_set_stream(struct v4l2_subdev *sd, int enable) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct isp_video *video_out = &prev->video_out; struct isp_device *isp = to_isp_device(prev); struct device *dev = to_device(prev); if (prev->state == ISP_PIPELINE_STREAM_STOPPED) { if (enable == ISP_PIPELINE_STREAM_STOPPED) return 0; omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_PREVIEW); preview_configure(prev); atomic_set(&prev->stopping, 0); preview_print_status(prev); } switch (enable) { case ISP_PIPELINE_STREAM_CONTINUOUS: if (prev->output & PREVIEW_OUTPUT_MEMORY) omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE); if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED || !(prev->output & PREVIEW_OUTPUT_MEMORY)) preview_enable_oneshot(prev); isp_video_dmaqueue_flags_clr(video_out); break; case ISP_PIPELINE_STREAM_SINGLESHOT: if (prev->input == PREVIEW_INPUT_MEMORY) omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_READ); if (prev->output & PREVIEW_OUTPUT_MEMORY) omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE); preview_enable_oneshot(prev); break; case ISP_PIPELINE_STREAM_STOPPED: if (omap3isp_module_sync_idle(&sd->entity, &prev->wait, &prev->stopping)) dev_dbg(dev, "%s: stop timeout.\n", sd->name); omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_READ); omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE); omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_PREVIEW); isp_video_dmaqueue_flags_clr(video_out); break; } prev->state = enable; return 0; } static struct v4l2_mbus_framefmt * __preview_get_format(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh, unsigned int pad, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) return v4l2_subdev_get_try_format(fh, pad); else return &prev->formats[pad]; } static struct v4l2_rect * __preview_get_crop(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) return v4l2_subdev_get_try_crop(fh, PREV_PAD_SINK); else return &prev->crop; } /* previewer format descriptions */ static const unsigned int preview_input_fmts[] = { V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SGBRG10_1X10, }; static const unsigned int preview_output_fmts[] = { V4L2_MBUS_FMT_UYVY8_1X16, V4L2_MBUS_FMT_YUYV8_1X16, }; /* * preview_try_format - Validate a format * @prev: ISP preview engine * @fh: V4L2 subdev file handle * @pad: pad number * @fmt: format to be validated * @which: try/active format selector * * Validate and adjust the given format for the given pad based on the preview * engine limits and the format and crop rectangles on other pads. */ static void preview_try_format(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh, unsigned int pad, struct v4l2_mbus_framefmt *fmt, enum v4l2_subdev_format_whence which) { enum v4l2_mbus_pixelcode pixelcode; struct v4l2_rect *crop; unsigned int i; switch (pad) { case PREV_PAD_SINK: /* When reading data from the CCDC, the input size has already * been mangled by the CCDC output pad so it can be accepted * as-is. * * When reading data from memory, clamp the requested width and * height. The TRM doesn't specify a minimum input height, make * sure we got enough lines to enable the noise filter and color * filter array interpolation. */ if (prev->input == PREVIEW_INPUT_MEMORY) { fmt->width = clamp_t(u32, fmt->width, PREV_MIN_IN_WIDTH, preview_max_out_width(prev)); fmt->height = clamp_t(u32, fmt->height, PREV_MIN_IN_HEIGHT, PREV_MAX_IN_HEIGHT); } fmt->colorspace = V4L2_COLORSPACE_SRGB; for (i = 0; i < ARRAY_SIZE(preview_input_fmts); i++) { if (fmt->code == preview_input_fmts[i]) break; } /* If not found, use SGRBG10 as default */ if (i >= ARRAY_SIZE(preview_input_fmts)) fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; break; case PREV_PAD_SOURCE: pixelcode = fmt->code; *fmt = *__preview_get_format(prev, fh, PREV_PAD_SINK, which); switch (pixelcode) { case V4L2_MBUS_FMT_YUYV8_1X16: case V4L2_MBUS_FMT_UYVY8_1X16: fmt->code = pixelcode; break; default: fmt->code = V4L2_MBUS_FMT_YUYV8_1X16; break; } /* The preview module output size is configurable through the * averager (horizontal scaling by 1/1, 1/2, 1/4 or 1/8). This * is not supported yet, hardcode the output size to the crop * rectangle size. */ crop = __preview_get_crop(prev, fh, which); fmt->width = crop->width; fmt->height = crop->height; fmt->colorspace = V4L2_COLORSPACE_JPEG; break; } fmt->field = V4L2_FIELD_NONE; } /* * preview_try_crop - Validate a crop rectangle * @prev: ISP preview engine * @sink: format on the sink pad * @crop: crop rectangle to be validated * * The preview engine crops lines and columns for its internal operation, * depending on which filters are enabled. Enforce minimum crop margins to * handle that transparently for userspace. * * See the explanation at the PREV_MARGIN_* definitions for more details. */ static void preview_try_crop(struct isp_prev_device *prev, const struct v4l2_mbus_framefmt *sink, struct v4l2_rect *crop) { unsigned int left = PREV_MARGIN_LEFT; unsigned int right = sink->width - PREV_MARGIN_RIGHT; unsigned int top = PREV_MARGIN_TOP; unsigned int bottom = sink->height - PREV_MARGIN_BOTTOM; /* When processing data on-the-fly from the CCDC, at least 2 pixels must * be cropped from the left and right sides of the image. As we don't * know which filters will be enabled, increase the left and right * margins by two. */ if (prev->input == PREVIEW_INPUT_CCDC) { left += 2; right -= 2; } /* The CFA filter crops 4 lines and 4 columns in Bayer mode, and 2 lines * and no columns in other modes. Increase the margins based on the sink * format. */ if (sink->code != V4L2_MBUS_FMT_Y8_1X8 && sink->code != V4L2_MBUS_FMT_Y10_1X10) { left += 2; right -= 2; top += 2; bottom -= 2; } /* Restrict left/top to even values to keep the Bayer pattern. */ crop->left &= ~1; crop->top &= ~1; crop->left = clamp_t(u32, crop->left, left, right - PREV_MIN_OUT_WIDTH); crop->top = clamp_t(u32, crop->top, top, bottom - PREV_MIN_OUT_HEIGHT); crop->width = clamp_t(u32, crop->width, PREV_MIN_OUT_WIDTH, right - crop->left); crop->height = clamp_t(u32, crop->height, PREV_MIN_OUT_HEIGHT, bottom - crop->top); } /* * preview_enum_mbus_code - Handle pixel format enumeration * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @code : pointer to v4l2_subdev_mbus_code_enum structure * return -EINVAL or zero on success */ static int preview_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { switch (code->pad) { case PREV_PAD_SINK: if (code->index >= ARRAY_SIZE(preview_input_fmts)) return -EINVAL; code->code = preview_input_fmts[code->index]; break; case PREV_PAD_SOURCE: if (code->index >= ARRAY_SIZE(preview_output_fmts)) return -EINVAL; code->code = preview_output_fmts[code->index]; break; default: return -EINVAL; } return 0; } static int preview_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_size_enum *fse) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt format; if (fse->index != 0) return -EINVAL; format.code = fse->code; format.width = 1; format.height = 1; preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); fse->min_width = format.width; fse->min_height = format.height; if (format.code != fse->code) return -EINVAL; format.code = fse->code; format.width = -1; format.height = -1; preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); fse->max_width = format.width; fse->max_height = format.height; return 0; } /* * preview_get_selection - Retrieve a selection rectangle on a pad * @sd: ISP preview V4L2 subdevice * @fh: V4L2 subdev file handle * @sel: Selection rectangle * * The only supported rectangles are the crop rectangles on the sink pad. * * Return 0 on success or a negative error code otherwise. */ static int preview_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; if (sel->pad != PREV_PAD_SINK) return -EINVAL; switch (sel->target) { case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.left = 0; sel->r.top = 0; sel->r.width = INT_MAX; sel->r.height = INT_MAX; format = __preview_get_format(prev, fh, PREV_PAD_SINK, sel->which); preview_try_crop(prev, format, &sel->r); break; case V4L2_SEL_TGT_CROP: sel->r = *__preview_get_crop(prev, fh, sel->which); break; default: return -EINVAL; } return 0; } /* * preview_set_selection - Set a selection rectangle on a pad * @sd: ISP preview V4L2 subdevice * @fh: V4L2 subdev file handle * @sel: Selection rectangle * * The only supported rectangle is the actual crop rectangle on the sink pad. * * Return 0 on success or a negative error code otherwise. */ static int preview_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != PREV_PAD_SINK) return -EINVAL; /* The crop rectangle can't be changed while streaming. */ if (prev->state != ISP_PIPELINE_STREAM_STOPPED) return -EBUSY; /* Modifying the crop rectangle always changes the format on the source * pad. If the KEEP_CONFIG flag is set, just return the current crop * rectangle. */ if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) { sel->r = *__preview_get_crop(prev, fh, sel->which); return 0; } format = __preview_get_format(prev, fh, PREV_PAD_SINK, sel->which); preview_try_crop(prev, format, &sel->r); *__preview_get_crop(prev, fh, sel->which) = sel->r; /* Update the source format. */ format = __preview_get_format(prev, fh, PREV_PAD_SOURCE, sel->which); preview_try_format(prev, fh, PREV_PAD_SOURCE, format, sel->which); return 0; } /* * preview_get_format - Handle get format by pads subdev method * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @fmt: pointer to v4l2 subdev format structure * return -EINVAL or zero on success */ static int preview_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; format = __preview_get_format(prev, fh, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; fmt->format = *format; return 0; } /* * preview_set_format - Handle set format by pads subdev method * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @fmt: pointer to v4l2 subdev format structure * return -EINVAL or zero on success */ static int preview_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct isp_prev_device *prev = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; struct v4l2_rect *crop; format = __preview_get_format(prev, fh, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; preview_try_format(prev, fh, fmt->pad, &fmt->format, fmt->which); *format = fmt->format; /* Propagate the format from sink to source */ if (fmt->pad == PREV_PAD_SINK) { /* Reset the crop rectangle. */ crop = __preview_get_crop(prev, fh, fmt->which); crop->left = 0; crop->top = 0; crop->width = fmt->format.width; crop->height = fmt->format.height; preview_try_crop(prev, &fmt->format, crop); /* Update the source format. */ format = __preview_get_format(prev, fh, PREV_PAD_SOURCE, fmt->which); preview_try_format(prev, fh, PREV_PAD_SOURCE, format, fmt->which); } return 0; } /* * preview_init_formats - Initialize formats on all pads * @sd: ISP preview V4L2 subdevice * @fh: V4L2 subdev file handle * * Initialize all pad formats with default values. If fh is not NULL, try * formats are initialized on the file handle. Otherwise active formats are * initialized on the device. */ static int preview_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_subdev_format format; memset(&format, 0, sizeof(format)); format.pad = PREV_PAD_SINK; format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10; format.format.width = 4096; format.format.height = 4096; preview_set_format(sd, fh, &format); return 0; } /* subdev core operations */ static const struct v4l2_subdev_core_ops preview_v4l2_core_ops = { .ioctl = preview_ioctl, }; /* subdev video operations */ static const struct v4l2_subdev_video_ops preview_v4l2_video_ops = { .s_stream = preview_set_stream, }; /* subdev pad operations */ static const struct v4l2_subdev_pad_ops preview_v4l2_pad_ops = { .enum_mbus_code = preview_enum_mbus_code, .enum_frame_size = preview_enum_frame_size, .get_fmt = preview_get_format, .set_fmt = preview_set_format, .get_selection = preview_get_selection, .set_selection = preview_set_selection, }; /* subdev operations */ static const struct v4l2_subdev_ops preview_v4l2_ops = { .core = &preview_v4l2_core_ops, .video = &preview_v4l2_video_ops, .pad = &preview_v4l2_pad_ops, }; /* subdev internal operations */ static const struct v4l2_subdev_internal_ops preview_v4l2_internal_ops = { .open = preview_init_formats, }; /* ----------------------------------------------------------------------------- * Media entity operations */ /* * preview_link_setup - Setup previewer connections. * @entity : Pointer to media entity structure * @local : Pointer to local pad array * @remote : Pointer to remote pad array * @flags : Link flags * return -EINVAL or zero on success */ static int preview_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_prev_device *prev = v4l2_get_subdevdata(sd); switch (local->index | media_entity_type(remote->entity)) { case PREV_PAD_SINK | MEDIA_ENT_T_DEVNODE: /* read from memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->input == PREVIEW_INPUT_CCDC) return -EBUSY; prev->input = PREVIEW_INPUT_MEMORY; } else { if (prev->input == PREVIEW_INPUT_MEMORY) prev->input = PREVIEW_INPUT_NONE; } break; case PREV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: /* read from ccdc */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->input == PREVIEW_INPUT_MEMORY) return -EBUSY; prev->input = PREVIEW_INPUT_CCDC; } else { if (prev->input == PREVIEW_INPUT_CCDC) prev->input = PREVIEW_INPUT_NONE; } break; /* * The ISP core doesn't support pipelines with multiple video outputs. * Revisit this when it will be implemented, and return -EBUSY for now. */ case PREV_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: /* write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->output & ~PREVIEW_OUTPUT_MEMORY) return -EBUSY; prev->output |= PREVIEW_OUTPUT_MEMORY; } else { prev->output &= ~PREVIEW_OUTPUT_MEMORY; } break; case PREV_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: /* write to resizer */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->output & ~PREVIEW_OUTPUT_RESIZER) return -EBUSY; prev->output |= PREVIEW_OUTPUT_RESIZER; } else { prev->output &= ~PREVIEW_OUTPUT_RESIZER; } break; default: return -EINVAL; } return 0; } /* media operations */ static const struct media_entity_operations preview_media_ops = { .link_setup = preview_link_setup, .link_validate = v4l2_subdev_link_validate, }; void omap3isp_preview_unregister_entities(struct isp_prev_device *prev) { v4l2_device_unregister_subdev(&prev->subdev); omap3isp_video_unregister(&prev->video_in); omap3isp_video_unregister(&prev->video_out); } int omap3isp_preview_register_entities(struct isp_prev_device *prev, struct v4l2_device *vdev) { int ret; /* Register the subdev and video nodes. */ ret = v4l2_device_register_subdev(vdev, &prev->subdev); if (ret < 0) goto error; ret = omap3isp_video_register(&prev->video_in, vdev); if (ret < 0) goto error; ret = omap3isp_video_register(&prev->video_out, vdev); if (ret < 0) goto error; return 0; error: omap3isp_preview_unregister_entities(prev); return ret; } /* ----------------------------------------------------------------------------- * ISP previewer initialisation and cleanup */ /* * preview_init_entities - Initialize subdev and media entity. * @prev : Pointer to preview structure * return -ENOMEM or zero on success */ static int preview_init_entities(struct isp_prev_device *prev) { struct v4l2_subdev *sd = &prev->subdev; struct media_pad *pads = prev->pads; struct media_entity *me = &sd->entity; int ret; prev->input = PREVIEW_INPUT_NONE; v4l2_subdev_init(sd, &preview_v4l2_ops); sd->internal_ops = &preview_v4l2_internal_ops; strlcpy(sd->name, "OMAP3 ISP preview", sizeof(sd->name)); sd->grp_id = 1 << 16; /* group ID for isp subdevs */ v4l2_set_subdevdata(sd, prev); sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; v4l2_ctrl_handler_init(&prev->ctrls, 2); v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_BRIGHTNESS, ISPPRV_BRIGHT_LOW, ISPPRV_BRIGHT_HIGH, ISPPRV_BRIGHT_STEP, ISPPRV_BRIGHT_DEF); v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_CONTRAST, ISPPRV_CONTRAST_LOW, ISPPRV_CONTRAST_HIGH, ISPPRV_CONTRAST_STEP, ISPPRV_CONTRAST_DEF); v4l2_ctrl_handler_setup(&prev->ctrls); sd->ctrl_handler = &prev->ctrls; pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &preview_media_ops; ret = media_entity_init(me, PREV_PADS_NUM, pads, 0); if (ret < 0) return ret; preview_init_formats(sd, NULL); /* According to the OMAP34xx TRM, video buffers need to be aligned on a * 32 bytes boundary. However, an undocumented hardware bug requires a * 64 bytes boundary at the preview engine input. */ prev->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; prev->video_in.ops = &preview_video_ops; prev->video_in.isp = to_isp_device(prev); prev->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; prev->video_in.bpl_alignment = 64; prev->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; prev->video_out.ops = &preview_video_ops; prev->video_out.isp = to_isp_device(prev); prev->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; prev->video_out.bpl_alignment = 32; ret = omap3isp_video_init(&prev->video_in, "preview"); if (ret < 0) goto error_video_in; ret = omap3isp_video_init(&prev->video_out, "preview"); if (ret < 0) goto error_video_out; /* Connect the video nodes to the previewer subdev. */ ret = media_entity_create_link(&prev->video_in.video.entity, 0, &prev->subdev.entity, PREV_PAD_SINK, 0); if (ret < 0) goto error_link; ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE, &prev->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; return 0; error_link: omap3isp_video_cleanup(&prev->video_out); error_video_out: omap3isp_video_cleanup(&prev->video_in); error_video_in: media_entity_cleanup(&prev->subdev.entity); return ret; } /* * omap3isp_preview_init - Previewer initialization. * @isp : Pointer to ISP device * return -ENOMEM or zero on success */ int omap3isp_preview_init(struct isp_device *isp) { struct isp_prev_device *prev = &isp->isp_prev; init_waitqueue_head(&prev->wait); preview_init_params(prev); return preview_init_entities(prev); } void omap3isp_preview_cleanup(struct isp_device *isp) { struct isp_prev_device *prev = &isp->isp_prev; v4l2_ctrl_handler_free(&prev->ctrls); omap3isp_video_cleanup(&prev->video_in); omap3isp_video_cleanup(&prev->video_out); media_entity_cleanup(&prev->subdev.entity); }