| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Benoit Parrot | 12106 | 96.18% | 12 | 25.53% |
| Steve Longerbeam | 115 | 0.91% | 1 | 2.13% |
| Hans Verkuil | 113 | 0.90% | 10 | 21.28% |
| Lad Prabhakar | 110 | 0.87% | 5 | 10.64% |
| Junghak Sung | 36 | 0.29% | 2 | 4.26% |
| Sakari Ailus | 26 | 0.21% | 3 | 6.38% |
| Laurent Pinchart | 26 | 0.21% | 2 | 4.26% |
| Mauro Carvalho Chehab | 18 | 0.14% | 3 | 6.38% |
| Kees Cook | 8 | 0.06% | 1 | 2.13% |
| Andrzej Hajda | 8 | 0.06% | 1 | 2.13% |
| Dave Gerlach | 6 | 0.05% | 1 | 2.13% |
| Changming Liu | 6 | 0.05% | 1 | 2.13% |
| Wolfram Sang | 4 | 0.03% | 1 | 2.13% |
| Dan Carpenter | 2 | 0.02% | 1 | 2.13% |
| Arnd Bergmann | 1 | 0.01% | 1 | 2.13% |
| Nicolas Iooss | 1 | 0.01% | 1 | 2.13% |
| Rob Herring | 1 | 0.01% | 1 | 2.13% |
| Total | 12587 | 47 |
// SPDX-License-Identifier: GPL-2.0-only /* * TI VPFE capture Driver * * Copyright (C) 2013 - 2014 Texas Instruments, Inc. * * Benoit Parrot <bparrot@ti.com> * Lad, Prabhakar <prabhakar.csengg@gmail.com> */ #include <linux/delay.h> #include <linux/err.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_graph.h> #include <linux/pinctrl/consumer.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/videodev2.h> #include <media/v4l2-common.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #include <media/v4l2-fwnode.h> #include "am437x-vpfe.h" #define VPFE_MODULE_NAME "vpfe" #define VPFE_VERSION "0.1.0" static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level 0-8"); #define vpfe_dbg(level, dev, fmt, arg...) \ v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg) #define vpfe_info(dev, fmt, arg...) \ v4l2_info(&dev->v4l2_dev, fmt, ##arg) #define vpfe_err(dev, fmt, arg...) \ v4l2_err(&dev->v4l2_dev, fmt, ##arg) /* standard information */ struct vpfe_standard { v4l2_std_id std_id; unsigned int width; unsigned int height; struct v4l2_fract pixelaspect; int frame_format; }; static const struct vpfe_standard vpfe_standards[] = { {V4L2_STD_525_60, 720, 480, {11, 10}, 1}, {V4L2_STD_625_50, 720, 576, {54, 59}, 1}, }; static struct vpfe_fmt formats[VPFE_NUM_FORMATS] = { { .fourcc = V4L2_PIX_FMT_YUYV, .code = MEDIA_BUS_FMT_YUYV8_2X8, .bitsperpixel = 16, }, { .fourcc = V4L2_PIX_FMT_UYVY, .code = MEDIA_BUS_FMT_UYVY8_2X8, .bitsperpixel = 16, }, { .fourcc = V4L2_PIX_FMT_YVYU, .code = MEDIA_BUS_FMT_YVYU8_2X8, .bitsperpixel = 16, }, { .fourcc = V4L2_PIX_FMT_VYUY, .code = MEDIA_BUS_FMT_VYUY8_2X8, .bitsperpixel = 16, }, { .fourcc = V4L2_PIX_FMT_SBGGR8, .code = MEDIA_BUS_FMT_SBGGR8_1X8, .bitsperpixel = 8, }, { .fourcc = V4L2_PIX_FMT_SGBRG8, .code = MEDIA_BUS_FMT_SGBRG8_1X8, .bitsperpixel = 8, }, { .fourcc = V4L2_PIX_FMT_SGRBG8, .code = MEDIA_BUS_FMT_SGRBG8_1X8, .bitsperpixel = 8, }, { .fourcc = V4L2_PIX_FMT_SRGGB8, .code = MEDIA_BUS_FMT_SRGGB8_1X8, .bitsperpixel = 8, }, { .fourcc = V4L2_PIX_FMT_RGB565, .code = MEDIA_BUS_FMT_RGB565_2X8_LE, .bitsperpixel = 16, }, { .fourcc = V4L2_PIX_FMT_RGB565X, .code = MEDIA_BUS_FMT_RGB565_2X8_BE, .bitsperpixel = 16, }, }; static int __subdev_get_format(struct vpfe_device *vpfe, struct v4l2_mbus_framefmt *fmt); static int vpfe_calc_format_size(struct vpfe_device *vpfe, const struct vpfe_fmt *fmt, struct v4l2_format *f); static struct vpfe_fmt *find_format_by_code(struct vpfe_device *vpfe, unsigned int code) { struct vpfe_fmt *fmt; unsigned int k; for (k = 0; k < vpfe->num_active_fmt; k++) { fmt = vpfe->active_fmt[k]; if (fmt->code == code) return fmt; } return NULL; } static struct vpfe_fmt *find_format_by_pix(struct vpfe_device *vpfe, unsigned int pixelformat) { struct vpfe_fmt *fmt; unsigned int k; for (k = 0; k < vpfe->num_active_fmt; k++) { fmt = vpfe->active_fmt[k]; if (fmt->fourcc == pixelformat) return fmt; } return NULL; } static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe, const struct vpfe_fmt *fmt) { struct vpfe_subdev_info *sdinfo = vpfe->current_subdev; unsigned int bus_width = sdinfo->vpfe_param.bus_width; u32 bpp, bus_width_bytes, clocksperpixel; bus_width_bytes = ALIGN(bus_width, 8) >> 3; clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width); bpp = clocksperpixel * bus_width_bytes; return bpp; } /* Print Four-character-code (FOURCC) */ static char *print_fourcc(u32 fmt) { static char code[5]; code[0] = (unsigned char)(fmt & 0xff); code[1] = (unsigned char)((fmt >> 8) & 0xff); code[2] = (unsigned char)((fmt >> 16) & 0xff); code[3] = (unsigned char)((fmt >> 24) & 0xff); code[4] = '\0'; return code; } static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset) { return ioread32(ccdc->ccdc_cfg.base_addr + offset); } static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset) { iowrite32(val, ccdc->ccdc_cfg.base_addr + offset); } static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc) { return container_of(ccdc, struct vpfe_device, ccdc); } static inline struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_v4l2_buffer *vb) { return container_of(vb, struct vpfe_cap_buffer, vb); } static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag) { vpfe_reg_write(ccdc, !!flag, VPFE_PCR); } static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag) { unsigned int cfg; if (!flag) { cfg = vpfe_reg_read(ccdc, VPFE_CONFIG); cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT); } else { cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT; } vpfe_reg_write(ccdc, cfg, VPFE_CONFIG); } static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc, struct v4l2_rect *image_win, enum ccdc_frmfmt frm_fmt, int bpp) { int horz_start, horz_nr_pixels; int vert_start, vert_nr_lines; int val, mid_img; /* * ppc - per pixel count. indicates how many pixels per cell * output to SDRAM. example, for ycbcr, it is one y and one c, so 2. * raw capture this is 1 */ horz_start = image_win->left * bpp; horz_nr_pixels = (image_win->width * bpp) - 1; vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) | horz_nr_pixels, VPFE_HORZ_INFO); vert_start = image_win->top; if (frm_fmt == CCDC_FRMFMT_INTERLACED) { vert_nr_lines = (image_win->height >> 1) - 1; vert_start >>= 1; /* configure VDINT0 */ val = (vert_start << VPFE_VDINT_VDINT0_SHIFT); } else { vert_nr_lines = image_win->height - 1; /* * configure VDINT0 and VDINT1. VDINT1 will be at half * of image height */ mid_img = vert_start + (image_win->height / 2); val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) | (mid_img & VPFE_VDINT_VDINT1_MASK); } vpfe_reg_write(ccdc, val, VPFE_VDINT); vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) | vert_start, VPFE_VERT_START); vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES); } static void vpfe_reg_dump(struct vpfe_ccdc *ccdc) { struct vpfe_device *vpfe = to_vpfe(ccdc); vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW)); vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP)); vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB)); vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP)); vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN)); vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST)); vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SYNMODE)); vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n", vpfe_reg_read(ccdc, VPFE_HSIZE_OFF)); vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n", vpfe_reg_read(ccdc, VPFE_HORZ_INFO)); vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n", vpfe_reg_read(ccdc, VPFE_VERT_START)); vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n", vpfe_reg_read(ccdc, VPFE_VERT_LINES)); } static int vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc, struct vpfe_ccdc_config_params_raw *ccdcparam) { struct vpfe_device *vpfe = to_vpfe(ccdc); u8 max_gamma, max_data; if (!ccdcparam->alaw.enable) return 0; max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd); max_data = ccdc_data_size_max_bit(ccdcparam->data_sz); if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 || ccdcparam->data_sz > VPFE_CCDC_DATA_8BITS || max_gamma > max_data) { vpfe_dbg(1, vpfe, "Invalid data line select\n"); return -EINVAL; } return 0; } static void vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc, struct vpfe_ccdc_config_params_raw *raw_params) { struct vpfe_ccdc_config_params_raw *config_params = &ccdc->ccdc_cfg.bayer.config_params; *config_params = *raw_params; } /* * vpfe_ccdc_restore_defaults() * This function will write defaults to all CCDC registers */ static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc) { int i; /* Disable CCDC */ vpfe_pcr_enable(ccdc, 0); /* set all registers to default value */ for (i = 4; i <= 0x94; i += 4) vpfe_reg_write(ccdc, 0, i); vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING); vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW); } static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev) { struct vpfe_device *vpfe = to_vpfe(ccdc); u32 dma_cntl, pcr; pcr = vpfe_reg_read(ccdc, VPFE_PCR); if (pcr) vpfe_dbg(1, vpfe, "VPFE_PCR is still set (%x)", pcr); dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL); if ((dma_cntl & VPFE_DMA_CNTL_OVERFLOW)) vpfe_dbg(1, vpfe, "VPFE_DMA_CNTL_OVERFLOW is still set (%x)", dma_cntl); /* Disable CCDC by resetting all register to default POR values */ vpfe_ccdc_restore_defaults(ccdc); /* Disabled the module at the CONFIG level */ vpfe_config_enable(ccdc, 0); pm_runtime_put_sync(dev); return 0; } static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params) { struct vpfe_device *vpfe = to_vpfe(ccdc); struct vpfe_ccdc_config_params_raw raw_params; int x; if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER) return -EINVAL; x = copy_from_user(&raw_params, params, sizeof(raw_params)); if (x) { vpfe_dbg(1, vpfe, "%s: error in copying ccdc params, %d\n", __func__, x); return -EFAULT; } if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) { vpfe_ccdc_update_raw_params(ccdc, &raw_params); return 0; } return -EINVAL; } /* * vpfe_ccdc_config_ycbcr() * This function will configure CCDC for YCbCr video capture */ static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc) { struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr; u32 syn_mode; /* * first restore the CCDC registers to default values * This is important since we assume default values to be set in * a lot of registers that we didn't touch */ vpfe_ccdc_restore_defaults(ccdc); /* * configure pixel format, frame format, configure video frame * format, enable output to SDRAM, enable internal timing generator * and 8bit pack mode */ syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) << VPFE_SYN_MODE_INPMOD_SHIFT) | ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) << VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE | VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE); /* setup BT.656 sync mode */ if (params->bt656_enable) { vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF); /* * configure the FID, VD, HD pin polarity, * fld,hd pol positive, vd negative, 8-bit data */ syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE; if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) syn_mode |= VPFE_SYN_MODE_10BITS; else syn_mode |= VPFE_SYN_MODE_8BITS; } else { /* y/c external sync mode */ syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) << VPFE_FID_POL_SHIFT) | ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) | ((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT)); } vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); /* configure video window */ vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt, params->bytesperpixel); /* * configure the order of y cb cr in SDRAM, and disable latch * internal register on vsync */ if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) vpfe_reg_write(ccdc, (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | VPFE_LATCH_ON_VSYNC_DISABLE | VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG); else vpfe_reg_write(ccdc, (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); /* * configure the horizontal line offset. This should be a * on 32 byte boundary. So clear LSB 5 bits */ vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); /* configure the memory line offset */ if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) /* two fields are interleaved in memory */ vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED, VPFE_SDOFST); } static void vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc, struct vpfe_ccdc_black_clamp *bclamp) { u32 val; if (!bclamp->enable) { /* configure DCSub */ val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK; vpfe_reg_write(ccdc, val, VPFE_DCSUB); vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP); return; } /* * Configure gain, Start pixel, No of line to be avg, * No of pixel/line to be avg, & Enable the Black clamping */ val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) | ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) << VPFE_BLK_ST_PXL_SHIFT) | ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) << VPFE_BLK_SAMPLE_LINE_SHIFT) | ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) << VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE); vpfe_reg_write(ccdc, val, VPFE_CLAMP); /* If Black clamping is enable then make dcsub 0 */ vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB); } static void vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc, struct vpfe_ccdc_black_compensation *bcomp) { u32 val; val = ((bcomp->b & VPFE_BLK_COMP_MASK) | ((bcomp->gb & VPFE_BLK_COMP_MASK) << VPFE_BLK_COMP_GB_COMP_SHIFT) | ((bcomp->gr & VPFE_BLK_COMP_MASK) << VPFE_BLK_COMP_GR_COMP_SHIFT) | ((bcomp->r & VPFE_BLK_COMP_MASK) << VPFE_BLK_COMP_R_COMP_SHIFT)); vpfe_reg_write(ccdc, val, VPFE_BLKCMP); } /* * vpfe_ccdc_config_raw() * This function will configure CCDC for Raw capture mode */ static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc) { struct vpfe_device *vpfe = to_vpfe(ccdc); struct vpfe_ccdc_config_params_raw *config_params = &ccdc->ccdc_cfg.bayer.config_params; struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer; unsigned int syn_mode; unsigned int val; /* Reset CCDC */ vpfe_ccdc_restore_defaults(ccdc); /* Disable latching function registers on VSYNC */ vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); /* * Configure the vertical sync polarity(SYN_MODE.VDPOL), * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity * (SYN_MODE.FLDPOL), frame format(progressive or interlace), * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output * SDRAM, enable internal timing generator */ syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) | ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) | ((params->fid_pol & VPFE_FID_POL_MASK) << VPFE_FID_POL_SHIFT) | ((params->frm_fmt & VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) | ((config_params->data_sz & VPFE_DATA_SZ_MASK) << VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt & VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) | VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE); /* Enable and configure aLaw register if needed */ if (config_params->alaw.enable) { val = ((config_params->alaw.gamma_wd & VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE); vpfe_reg_write(ccdc, val, VPFE_ALAW); vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val); } /* Configure video window */ vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt, params->bytesperpixel); /* Configure Black Clamp */ vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp); /* Configure Black level compensation */ vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp); /* If data size is 8 bit then pack the data */ if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) || config_params->alaw.enable) syn_mode |= VPFE_DATA_PACK_ENABLE; /* * Configure Horizontal offset register. If pack 8 is enabled then * 1 pixel will take 1 byte */ vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n", params->bytesperline, params->bytesperline); /* Set value for SDOFST */ if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) { if (params->image_invert_enable) { /* For interlace inverse mode */ vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT, VPFE_SDOFST); } else { /* For interlace non inverse mode */ vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT, VPFE_SDOFST); } } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT, VPFE_SDOFST); } vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); vpfe_reg_dump(ccdc); } static inline int vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc, enum ccdc_buftype buf_type) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) ccdc->ccdc_cfg.bayer.buf_type = buf_type; else ccdc->ccdc_cfg.ycbcr.buf_type = buf_type; return 0; } static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) return ccdc->ccdc_cfg.bayer.buf_type; return ccdc->ccdc_cfg.ycbcr.buf_type; } static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt) { struct vpfe_device *vpfe = to_vpfe(ccdc); vpfe_dbg(1, vpfe, "%s: if_type: %d, pixfmt:%s\n", __func__, ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt)); if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; /* * Need to clear it in case it was left on * after the last capture. */ ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0; switch (pixfmt) { case V4L2_PIX_FMT_SBGGR8: ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1; break; case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_UYVY: case V4L2_PIX_FMT_YUV420: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_RGB565X: break; case V4L2_PIX_FMT_SBGGR16: default: return -EINVAL; } } else { switch (pixfmt) { case V4L2_PIX_FMT_YUYV: ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR; break; case V4L2_PIX_FMT_UYVY: ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; break; default: return -EINVAL; } } return 0; } static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc) { u32 pixfmt; if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { pixfmt = V4L2_PIX_FMT_YUYV; } else { if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR) pixfmt = V4L2_PIX_FMT_YUYV; else pixfmt = V4L2_PIX_FMT_UYVY; } return pixfmt; } static int vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc, struct v4l2_rect *win, unsigned int bpp) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { ccdc->ccdc_cfg.bayer.win = *win; ccdc->ccdc_cfg.bayer.bytesperpixel = bpp; ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32); } else { ccdc->ccdc_cfg.ycbcr.win = *win; ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp; ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32); } return 0; } static inline void vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc, struct v4l2_rect *win) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) *win = ccdc->ccdc_cfg.bayer.win; else *win = ccdc->ccdc_cfg.ycbcr.win; } static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) return ccdc->ccdc_cfg.bayer.bytesperline; return ccdc->ccdc_cfg.ycbcr.bytesperline; } static inline int vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc, enum ccdc_frmfmt frm_fmt) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt; else ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt; return 0; } static inline enum ccdc_frmfmt vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc) { if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) return ccdc->ccdc_cfg.bayer.frm_fmt; return ccdc->ccdc_cfg.ycbcr.frm_fmt; } static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc) { return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1; } static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr) { vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR); } static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc, struct vpfe_hw_if_param *params) { struct vpfe_device *vpfe = to_vpfe(ccdc); ccdc->ccdc_cfg.if_type = params->if_type; switch (params->if_type) { case VPFE_BT656: case VPFE_YCBCR_SYNC_16: case VPFE_YCBCR_SYNC_8: case VPFE_BT656_10BIT: ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol; ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol; break; case VPFE_RAW_BAYER: ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol; ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol; if (params->bus_width == 10) ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_10BITS; else ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS; vpfe_dbg(1, vpfe, "params.bus_width: %d\n", params->bus_width); vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n", ccdc->ccdc_cfg.bayer.config_params.data_sz); break; default: return -EINVAL; } return 0; } static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint) { unsigned int vpfe_int_status; vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); switch (vdint) { /* VD0 interrupt */ case VPFE_VDINT0: vpfe_int_status &= ~VPFE_VDINT0; vpfe_int_status |= VPFE_VDINT0; break; /* VD1 interrupt */ case VPFE_VDINT1: vpfe_int_status &= ~VPFE_VDINT1; vpfe_int_status |= VPFE_VDINT1; break; /* VD2 interrupt */ case VPFE_VDINT2: vpfe_int_status &= ~VPFE_VDINT2; vpfe_int_status |= VPFE_VDINT2; break; /* Clear all interrupts */ default: vpfe_int_status &= ~(VPFE_VDINT0 | VPFE_VDINT1 | VPFE_VDINT2); vpfe_int_status |= (VPFE_VDINT0 | VPFE_VDINT1 | VPFE_VDINT2); break; } /* Clear specific VDINT from the status register */ vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS); vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); /* Acknowledge that we are done with all interrupts */ vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI); } static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc) { ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER; ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT; ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED; ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED; ccdc->ccdc_cfg.ycbcr.win.left = 0; ccdc->ccdc_cfg.ycbcr.win.top = 0; ccdc->ccdc_cfg.ycbcr.win.width = 720; ccdc->ccdc_cfg.ycbcr.win.height = 576; ccdc->ccdc_cfg.ycbcr.bt656_enable = 1; ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE; ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE; ccdc->ccdc_cfg.bayer.win.left = 0; ccdc->ccdc_cfg.bayer.win.top = 0; ccdc->ccdc_cfg.bayer.win.width = 800; ccdc->ccdc_cfg.bayer.win.height = 600; ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS; ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd = VPFE_CCDC_GAMMA_BITS_09_0; } /* * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings */ static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe, struct v4l2_format *f) { struct v4l2_rect image_win; enum ccdc_buftype buf_type; enum ccdc_frmfmt frm_fmt; memset(f, 0, sizeof(*f)); f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); f->fmt.pix.width = image_win.width; f->fmt.pix.height = image_win.height; f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc); f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc); frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc); if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { f->fmt.pix.field = V4L2_FIELD_NONE; } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) { if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) { f->fmt.pix.field = V4L2_FIELD_INTERLACED; } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) { f->fmt.pix.field = V4L2_FIELD_SEQ_TB; } else { vpfe_err(vpfe, "Invalid buf_type\n"); return -EINVAL; } } else { vpfe_err(vpfe, "Invalid frm_fmt\n"); return -EINVAL; } return 0; } static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe) { enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED; u32 bpp; int ret = 0; vpfe_dbg(1, vpfe, "pixelformat: %s\n", print_fourcc(vpfe->fmt.fmt.pix.pixelformat)); if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc, vpfe->fmt.fmt.pix.pixelformat) < 0) { vpfe_err(vpfe, "couldn't set pix format in ccdc\n"); return -EINVAL; } /* configure the image window */ bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt); vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, bpp); switch (vpfe->fmt.fmt.pix.field) { case V4L2_FIELD_INTERLACED: /* do nothing, since it is default */ ret = vpfe_ccdc_set_buftype( &vpfe->ccdc, CCDC_BUFTYPE_FLD_INTERLEAVED); break; case V4L2_FIELD_NONE: frm_fmt = CCDC_FRMFMT_PROGRESSIVE; /* buffer type only applicable for interlaced scan */ break; case V4L2_FIELD_SEQ_TB: ret = vpfe_ccdc_set_buftype( &vpfe->ccdc, CCDC_BUFTYPE_FLD_SEPARATED); break; default: return -EINVAL; } if (ret) return ret; return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt); } /* * vpfe_config_image_format() * For a given standard, this functions sets up the default * pix format & crop values in the vpfe device and ccdc. It first * starts with defaults based values from the standard table. * It then checks if sub device supports get_fmt and then override the * values based on that.Sets crop values to match with scan resolution * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the * values in ccdc */ static int vpfe_config_image_format(struct vpfe_device *vpfe, v4l2_std_id std_id) { struct vpfe_fmt *fmt; struct v4l2_mbus_framefmt mbus_fmt; int i, ret; for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) { if (vpfe_standards[i].std_id & std_id) { vpfe->std_info.active_pixels = vpfe_standards[i].width; vpfe->std_info.active_lines = vpfe_standards[i].height; vpfe->std_info.frame_format = vpfe_standards[i].frame_format; vpfe->std_index = i; break; } } if (i == ARRAY_SIZE(vpfe_standards)) { vpfe_err(vpfe, "standard not supported\n"); return -EINVAL; } ret = __subdev_get_format(vpfe, &mbus_fmt); if (ret) return ret; fmt = find_format_by_code(vpfe, mbus_fmt.code); if (!fmt) { vpfe_dbg(3, vpfe, "mbus code format (0x%08x) not found.\n", mbus_fmt.code); return -EINVAL; } /* Save current subdev format */ v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt); vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; vpfe->fmt.fmt.pix.pixelformat = fmt->fourcc; vpfe_calc_format_size(vpfe, fmt, &vpfe->fmt); vpfe->current_vpfe_fmt = fmt; /* Update the crop window based on found values */ vpfe->crop.top = 0; vpfe->crop.left = 0; vpfe->crop.width = mbus_fmt.width; vpfe->crop.height = mbus_fmt.height; return vpfe_config_ccdc_image_format(vpfe); } static int vpfe_initialize_device(struct vpfe_device *vpfe) { struct vpfe_subdev_info *sdinfo; int ret; sdinfo = &vpfe->cfg->sub_devs[0]; sdinfo->sd = vpfe->sd[0]; vpfe->current_input = 0; vpfe->std_index = 0; /* Configure the default format information */ ret = vpfe_config_image_format(vpfe, vpfe_standards[vpfe->std_index].std_id); if (ret) return ret; pm_runtime_get_sync(vpfe->pdev); vpfe_config_enable(&vpfe->ccdc, 1); vpfe_ccdc_restore_defaults(&vpfe->ccdc); /* Clear all VPFE interrupts */ vpfe_clear_intr(&vpfe->ccdc, -1); return ret; } /* * vpfe_release : This function is based on the vb2_fop_release * helper function. * It has been augmented to handle module power management, * by disabling/enabling h/w module fcntl clock when necessary. */ static int vpfe_release(struct file *file) { struct vpfe_device *vpfe = video_drvdata(file); bool fh_singular; int ret; mutex_lock(&vpfe->lock); /* Save the singular status before we call the clean-up helper */ fh_singular = v4l2_fh_is_singular_file(file); /* the release helper will cleanup any on-going streaming */ ret = _vb2_fop_release(file, NULL); /* * If this was the last open file. * Then de-initialize hw module. */ if (fh_singular) vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev); mutex_unlock(&vpfe->lock); return ret; } /* * vpfe_open : This function is based on the v4l2_fh_open helper function. * It has been augmented to handle module power management, * by disabling/enabling h/w module fcntl clock when necessary. */ static int vpfe_open(struct file *file) { struct vpfe_device *vpfe = video_drvdata(file); int ret; mutex_lock(&vpfe->lock); ret = v4l2_fh_open(file); if (ret) { vpfe_err(vpfe, "v4l2_fh_open failed\n"); goto unlock; } if (!v4l2_fh_is_singular_file(file)) goto unlock; if (vpfe_initialize_device(vpfe)) { v4l2_fh_release(file); ret = -ENODEV; } unlock: mutex_unlock(&vpfe->lock); return ret; } /** * vpfe_schedule_next_buffer: set next buffer address for capture * @vpfe : ptr to vpfe device * * This function will get next buffer from the dma queue and * set the buffer address in the vpfe register for capture. * the buffer is marked active */ static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe) { dma_addr_t addr; spin_lock(&vpfe->dma_queue_lock); if (list_empty(&vpfe->dma_queue)) { spin_unlock(&vpfe->dma_queue_lock); return; } vpfe->next_frm = list_entry(vpfe->dma_queue.next, struct vpfe_cap_buffer, list); list_del(&vpfe->next_frm->list); spin_unlock(&vpfe->dma_queue_lock); addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0); vpfe_set_sdr_addr(&vpfe->ccdc, addr); } static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe) { dma_addr_t addr; addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0) + vpfe->field_off; vpfe_set_sdr_addr(&vpfe->ccdc, addr); } /* * vpfe_process_buffer_complete: process a completed buffer * @vpfe : ptr to vpfe device * * This function time stamp the buffer and mark it as DONE. It also * wake up any process waiting on the QUEUE and set the next buffer * as current */ static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe) { vpfe->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); vpfe->cur_frm->vb.field = vpfe->fmt.fmt.pix.field; vpfe->cur_frm->vb.sequence = vpfe->sequence++; vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE); vpfe->cur_frm = vpfe->next_frm; } static void vpfe_handle_interlaced_irq(struct vpfe_device *vpfe, enum v4l2_field field) { int fid; /* interlaced or TB capture check which field * we are in hardware */ fid = vpfe_ccdc_getfid(&vpfe->ccdc); /* switch the software maintained field id */ vpfe->field ^= 1; if (fid == vpfe->field) { /* we are in-sync here,continue */ if (fid == 0) { /* * One frame is just being captured. If the * next frame is available, release the * current frame and move on */ if (vpfe->cur_frm != vpfe->next_frm) vpfe_process_buffer_complete(vpfe); if (vpfe->stopping) return; /* * based on whether the two fields are stored * interleave or separately in memory, * reconfigure the CCDC memory address */ if (field == V4L2_FIELD_SEQ_TB) vpfe_schedule_bottom_field(vpfe); } else { /* * if one field is just being captured configure * the next frame get the next frame from the empty * queue if no frame is available hold on to the * current buffer */ if (vpfe->cur_frm == vpfe->next_frm) vpfe_schedule_next_buffer(vpfe); } } else if (fid == 0) { /* * out of sync. Recover from any hardware out-of-sync. * May loose one frame */ vpfe->field = fid; } } /* * vpfe_isr : ISR handler for vpfe capture (VINT0) * @irq: irq number * @dev_id: dev_id ptr * * It changes status of the captured buffer, takes next buffer from the queue * and sets its address in VPFE registers */ static irqreturn_t vpfe_isr(int irq, void *dev) { struct vpfe_device *vpfe = (struct vpfe_device *)dev; enum v4l2_field field = vpfe->fmt.fmt.pix.field; int intr_status, stopping = vpfe->stopping; intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS); if (intr_status & VPFE_VDINT0) { if (field == V4L2_FIELD_NONE) { if (vpfe->cur_frm != vpfe->next_frm) vpfe_process_buffer_complete(vpfe); } else { vpfe_handle_interlaced_irq(vpfe, field); } if (stopping) { vpfe->stopping = false; complete(&vpfe->capture_stop); } } if (intr_status & VPFE_VDINT1 && !stopping) { if (field == V4L2_FIELD_NONE && vpfe->cur_frm == vpfe->next_frm) vpfe_schedule_next_buffer(vpfe); } vpfe_clear_intr(&vpfe->ccdc, intr_status); return IRQ_HANDLED; } static inline void vpfe_detach_irq(struct vpfe_device *vpfe) { unsigned int intr = VPFE_VDINT0; enum ccdc_frmfmt frame_format; frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); if (frame_format == CCDC_FRMFMT_PROGRESSIVE) intr |= VPFE_VDINT1; vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR); } static inline void vpfe_attach_irq(struct vpfe_device *vpfe) { unsigned int intr = VPFE_VDINT0; enum ccdc_frmfmt frame_format; frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); if (frame_format == CCDC_FRMFMT_PROGRESSIVE) intr |= VPFE_VDINT1; vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET); } static int vpfe_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct vpfe_device *vpfe = video_drvdata(file); strscpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver)); strscpy(cap->card, "TI AM437x VPFE", sizeof(cap->card)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", vpfe->v4l2_dev.name); return 0; } /* get the format set at output pad of the adjacent subdev */ static int __subdev_get_format(struct vpfe_device *vpfe, struct v4l2_mbus_framefmt *fmt) { struct v4l2_subdev *sd = vpfe->current_subdev->sd; struct v4l2_subdev_format sd_fmt; struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; int ret; sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; sd_fmt.pad = 0; ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt); if (ret) return ret; *fmt = *mbus_fmt; vpfe_dbg(1, vpfe, "%s: %dx%d code:%04X\n", __func__, fmt->width, fmt->height, fmt->code); return 0; } /* set the format at output pad of the adjacent subdev */ static int __subdev_set_format(struct vpfe_device *vpfe, struct v4l2_mbus_framefmt *fmt) { struct v4l2_subdev *sd = vpfe->current_subdev->sd; struct v4l2_subdev_format sd_fmt; struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; int ret; sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; sd_fmt.pad = 0; *mbus_fmt = *fmt; ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sd_fmt); if (ret) return ret; vpfe_dbg(1, vpfe, "%s %dx%d code:%04X\n", __func__, fmt->width, fmt->height, fmt->code); return 0; } static int vpfe_calc_format_size(struct vpfe_device *vpfe, const struct vpfe_fmt *fmt, struct v4l2_format *f) { u32 bpp; if (!fmt) { vpfe_dbg(3, vpfe, "No vpfe_fmt provided!\n"); return -EINVAL; } bpp = __get_bytesperpixel(vpfe, fmt); /* pitch should be 32 bytes aligned */ f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.width * bpp, 32); f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; vpfe_dbg(3, vpfe, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n", __func__, print_fourcc(f->fmt.pix.pixelformat), f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); return 0; } static int vpfe_g_fmt(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpfe_device *vpfe = video_drvdata(file); *fmt = vpfe->fmt; return 0; } static int vpfe_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_subdev_info *sdinfo; struct vpfe_fmt *fmt; sdinfo = vpfe->current_subdev; if (!sdinfo->sd) return -EINVAL; if (f->index >= vpfe->num_active_fmt) return -EINVAL; fmt = vpfe->active_fmt[f->index]; f->pixelformat = fmt->fourcc; vpfe_dbg(1, vpfe, "%s: mbus index: %d code: %x pixelformat: %s\n", __func__, f->index, fmt->code, print_fourcc(fmt->fourcc)); return 0; } static int vpfe_try_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct vpfe_device *vpfe = video_drvdata(file); struct v4l2_subdev *sd = vpfe->current_subdev->sd; const struct vpfe_fmt *fmt; struct v4l2_subdev_frame_size_enum fse; int ret, found; fmt = find_format_by_pix(vpfe, f->fmt.pix.pixelformat); if (!fmt) { /* default to first entry */ vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n", f->fmt.pix.pixelformat); fmt = vpfe->active_fmt[0]; f->fmt.pix.pixelformat = fmt->fourcc; } f->fmt.pix.field = vpfe->fmt.fmt.pix.field; /* check for/find a valid width/height */ ret = 0; found = false; fse.pad = 0; fse.code = fmt->code; fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; for (fse.index = 0; ; fse.index++) { ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse); if (ret) break; if (f->fmt.pix.width == fse.max_width && f->fmt.pix.height == fse.max_height) { found = true; break; } else if (f->fmt.pix.width >= fse.min_width && f->fmt.pix.width <= fse.max_width && f->fmt.pix.height >= fse.min_height && f->fmt.pix.height <= fse.max_height) { found = true; break; } } if (!found) { /* use existing values as default */ f->fmt.pix.width = vpfe->fmt.fmt.pix.width; f->fmt.pix.height = vpfe->fmt.fmt.pix.height; } /* * Use current colorspace for now, it will get * updated properly during s_fmt */ f->fmt.pix.colorspace = vpfe->fmt.fmt.pix.colorspace; return vpfe_calc_format_size(vpfe, fmt, f); } static int vpfe_s_fmt(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_fmt *f; struct v4l2_mbus_framefmt mbus_fmt; int ret; /* If streaming is started, return error */ if (vb2_is_busy(&vpfe->buffer_queue)) { vpfe_err(vpfe, "%s device busy\n", __func__); return -EBUSY; } ret = vpfe_try_fmt(file, priv, fmt); if (ret < 0) return ret; f = find_format_by_pix(vpfe, fmt->fmt.pix.pixelformat); v4l2_fill_mbus_format(&mbus_fmt, &fmt->fmt.pix, f->code); ret = __subdev_set_format(vpfe, &mbus_fmt); if (ret) return ret; /* Just double check nothing has gone wrong */ if (mbus_fmt.code != f->code) { vpfe_dbg(3, vpfe, "%s subdev changed format on us, this should not happen\n", __func__); return -EINVAL; } v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt); vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; vpfe->fmt.fmt.pix.pixelformat = f->fourcc; vpfe_calc_format_size(vpfe, f, &vpfe->fmt); *fmt = vpfe->fmt; vpfe->current_vpfe_fmt = f; /* Update the crop window based on found values */ vpfe->crop.width = fmt->fmt.pix.width; vpfe->crop.height = fmt->fmt.pix.height; /* set image capture parameters in the ccdc */ return vpfe_config_ccdc_image_format(vpfe); } static int vpfe_enum_size(struct file *file, void *priv, struct v4l2_frmsizeenum *fsize) { struct vpfe_device *vpfe = video_drvdata(file); struct v4l2_subdev_frame_size_enum fse; struct v4l2_subdev *sd = vpfe->current_subdev->sd; struct vpfe_fmt *fmt; int ret; /* check for valid format */ fmt = find_format_by_pix(vpfe, fsize->pixel_format); if (!fmt) { vpfe_dbg(3, vpfe, "Invalid pixel code: %x\n", fsize->pixel_format); return -EINVAL; } memset(fsize->reserved, 0x0, sizeof(fsize->reserved)); memset(&fse, 0x0, sizeof(fse)); fse.index = fsize->index; fse.pad = 0; fse.code = fmt->code; fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse); if (ret) return ret; vpfe_dbg(1, vpfe, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n", __func__, fse.index, fse.code, fse.min_width, fse.max_width, fse.min_height, fse.max_height); fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; fsize->discrete.width = fse.max_width; fsize->discrete.height = fse.max_height; vpfe_dbg(1, vpfe, "%s: index: %d pixformat: %s size: %dx%d\n", __func__, fsize->index, print_fourcc(fsize->pixel_format), fsize->discrete.width, fsize->discrete.height); return 0; } /* * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a * given app input index */ static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe, int *subdev_index, int *subdev_input_index, int app_input_index) { int i, j = 0; for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { if (app_input_index < (j + 1)) { *subdev_index = i; *subdev_input_index = app_input_index - j; return 0; } j++; } return -EINVAL; } /* * vpfe_get_app_input - Get app input index for a given subdev input index * driver stores the input index of the current sub device and translate it * when application request the current input */ static int vpfe_get_app_input_index(struct vpfe_device *vpfe, int *app_input_index) { struct vpfe_config *cfg = vpfe->cfg; struct vpfe_subdev_info *sdinfo; struct i2c_client *client; struct i2c_client *curr_client; int i, j = 0; curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd); for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { sdinfo = &cfg->sub_devs[i]; client = v4l2_get_subdevdata(sdinfo->sd); if (client->addr == curr_client->addr && client->adapter->nr == curr_client->adapter->nr) { if (vpfe->current_input >= 1) return -1; *app_input_index = j + vpfe->current_input; return 0; } j++; } return -EINVAL; } static int vpfe_enum_input(struct file *file, void *priv, struct v4l2_input *inp) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_subdev_info *sdinfo; int subdev, index; if (vpfe_get_subdev_input_index(vpfe, &subdev, &index, inp->index) < 0) { vpfe_dbg(1, vpfe, "input information not found for the subdev\n"); return -EINVAL; } sdinfo = &vpfe->cfg->sub_devs[subdev]; *inp = sdinfo->inputs[index]; return 0; } static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) { struct vpfe_device *vpfe = video_drvdata(file); return vpfe_get_app_input_index(vpfe, index); } /* Assumes caller is holding vpfe_dev->lock */ static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index) { int subdev_index = 0, inp_index = 0; struct vpfe_subdev_info *sdinfo; struct vpfe_route *route; u32 input, output; int ret; /* If streaming is started, return error */ if (vb2_is_busy(&vpfe->buffer_queue)) { vpfe_err(vpfe, "%s device busy\n", __func__); return -EBUSY; } ret = vpfe_get_subdev_input_index(vpfe, &subdev_index, &inp_index, index); if (ret < 0) { vpfe_err(vpfe, "invalid input index: %d\n", index); goto get_out; } sdinfo = &vpfe->cfg->sub_devs[subdev_index]; sdinfo->sd = vpfe->sd[subdev_index]; route = &sdinfo->routes[inp_index]; if (route && sdinfo->can_route) { input = route->input; output = route->output; if (sdinfo->sd) { ret = v4l2_subdev_call(sdinfo->sd, video, s_routing, input, output, 0); if (ret) { vpfe_err(vpfe, "s_routing failed\n"); ret = -EINVAL; goto get_out; } } } vpfe->current_subdev = sdinfo; if (sdinfo->sd) vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler; vpfe->current_input = index; vpfe->std_index = 0; /* set the bus/interface parameter for the sub device in ccdc */ ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param); if (ret) return ret; /* set the default image parameters in the device */ return vpfe_config_image_format(vpfe, vpfe_standards[vpfe->std_index].std_id); get_out: return ret; } static int vpfe_s_input(struct file *file, void *priv, unsigned int index) { struct vpfe_device *vpfe = video_drvdata(file); return vpfe_set_input(vpfe, index); } static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_subdev_info *sdinfo; sdinfo = vpfe->current_subdev; if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) return -ENODATA; /* Call querystd function of decoder device */ return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, video, querystd, std_id); } static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_subdev_info *sdinfo; int ret; sdinfo = vpfe->current_subdev; if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) return -ENODATA; /* if trying to set the same std then nothing to do */ if (vpfe_standards[vpfe->std_index].std_id == std_id) return 0; /* If streaming is started, return error */ if (vb2_is_busy(&vpfe->buffer_queue)) { vpfe_err(vpfe, "%s device busy\n", __func__); ret = -EBUSY; return ret; } ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, video, s_std, std_id); if (ret < 0) { vpfe_err(vpfe, "Failed to set standard\n"); return ret; } ret = vpfe_config_image_format(vpfe, std_id); return ret; } static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id) { struct vpfe_device *vpfe = video_drvdata(file); struct vpfe_subdev_info *sdinfo; sdinfo = vpfe->current_subdev; if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD) return -ENODATA; *std_id = vpfe_standards[vpfe->std_index].std_id; return 0; } /* * vpfe_calculate_offsets : This function calculates buffers offset * for top and bottom field */ static void vpfe_calculate_offsets(struct vpfe_device *vpfe) { struct v4l2_rect image_win; vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); vpfe->field_off = image_win.height * image_win.width; } /* * vpfe_queue_setup - Callback function for buffer setup. * @vq: vb2_queue ptr * @nbuffers: ptr to number of buffers requested by application * @nplanes:: contains number of distinct video planes needed to hold a frame * @sizes[]: contains the size (in bytes) of each plane. * @alloc_devs: ptr to allocation context * * This callback function is called when reqbuf() is called to adjust * the buffer count and buffer size */ static int vpfe_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); unsigned size = vpfe->fmt.fmt.pix.sizeimage; if (vq->num_buffers + *nbuffers < 3) *nbuffers = 3 - vq->num_buffers; if (*nplanes) { if (sizes[0] < size) return -EINVAL; size = sizes[0]; } *nplanes = 1; sizes[0] = size; vpfe_dbg(1, vpfe, "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]); /* Calculate field offset */ vpfe_calculate_offsets(vpfe); return 0; } /* * vpfe_buffer_prepare : callback function for buffer prepare * @vb: ptr to vb2_buffer * * This is the callback function for buffer prepare when vb2_qbuf() * function is called. The buffer is prepared and user space virtual address * or user address is converted into physical address */ static int vpfe_buffer_prepare(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage); if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) return -EINVAL; vbuf->field = vpfe->fmt.fmt.pix.field; return 0; } /* * vpfe_buffer_queue : Callback function to add buffer to DMA queue * @vb: ptr to vb2_buffer */ static void vpfe_buffer_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); struct vpfe_cap_buffer *buf = to_vpfe_buffer(vbuf); unsigned long flags = 0; /* add the buffer to the DMA queue */ spin_lock_irqsave(&vpfe->dma_queue_lock, flags); list_add_tail(&buf->list, &vpfe->dma_queue); spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); } static void vpfe_return_all_buffers(struct vpfe_device *vpfe, enum vb2_buffer_state state) { struct vpfe_cap_buffer *buf, *node; unsigned long flags; spin_lock_irqsave(&vpfe->dma_queue_lock, flags); list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) { vb2_buffer_done(&buf->vb.vb2_buf, state); list_del(&buf->list); } if (vpfe->cur_frm) vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state); if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm) vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state); vpfe->cur_frm = NULL; vpfe->next_frm = NULL; spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); } /* * vpfe_start_streaming : Starts the DMA engine for streaming * @vb: ptr to vb2_buffer * @count: number of buffers */ static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); struct vpfe_subdev_info *sdinfo; unsigned long flags; unsigned long addr; int ret; spin_lock_irqsave(&vpfe->dma_queue_lock, flags); vpfe->field = 0; vpfe->sequence = 0; sdinfo = vpfe->current_subdev; vpfe_attach_irq(vpfe); vpfe->stopping = false; init_completion(&vpfe->capture_stop); if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER) vpfe_ccdc_config_raw(&vpfe->ccdc); else vpfe_ccdc_config_ycbcr(&vpfe->ccdc); /* Get the next frame from the buffer queue */ vpfe->next_frm = list_entry(vpfe->dma_queue.next, struct vpfe_cap_buffer, list); vpfe->cur_frm = vpfe->next_frm; /* Remove buffer from the buffer queue */ list_del(&vpfe->cur_frm->list); spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb.vb2_buf, 0); vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr)); vpfe_pcr_enable(&vpfe->ccdc, 1); ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1); if (ret < 0) { vpfe_err(vpfe, "Error in attaching interrupt handle\n"); goto err; } return 0; err: vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED); vpfe_pcr_enable(&vpfe->ccdc, 0); return ret; } /* * vpfe_stop_streaming : Stop the DMA engine * @vq: ptr to vb2_queue * * This callback stops the DMA engine and any remaining buffers * in the DMA queue are released. */ static void vpfe_stop_streaming(struct vb2_queue *vq) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); struct vpfe_subdev_info *sdinfo; int ret; vpfe_pcr_enable(&vpfe->ccdc, 0); /* Wait for the last frame to be captured */ vpfe->stopping = true; wait_for_completion_timeout(&vpfe->capture_stop, msecs_to_jiffies(250)); vpfe_detach_irq(vpfe); sdinfo = vpfe->current_subdev; ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0); if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) vpfe_dbg(1, vpfe, "stream off failed in subdev\n"); /* release all active buffers */ vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR); } static int vpfe_g_pixelaspect(struct file *file, void *priv, int type, struct v4l2_fract *f) { struct vpfe_device *vpfe = video_drvdata(file); if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || vpfe->std_index >= ARRAY_SIZE(vpfe_standards)) return -EINVAL; *f = vpfe_standards[vpfe->std_index].pixelaspect; return 0; } static int vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct vpfe_device *vpfe = video_drvdata(file); if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || vpfe->std_index >= ARRAY_SIZE(vpfe_standards)) return -EINVAL; switch (s->target) { case V4L2_SEL_TGT_CROP_BOUNDS: case V4L2_SEL_TGT_CROP_DEFAULT: s->r.left = 0; s->r.top = 0; s->r.width = vpfe_standards[vpfe->std_index].width; s->r.height = vpfe_standards[vpfe->std_index].height; break; case V4L2_SEL_TGT_CROP: s->r = vpfe->crop; break; default: return -EINVAL; } return 0; } static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) { if (a->left < b->left || a->top < b->top) return 0; if (a->left + a->width > b->left + b->width) return 0; if (a->top + a->height > b->top + b->height) return 0; return 1; } static int vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct vpfe_device *vpfe = video_drvdata(file); struct v4l2_rect cr = vpfe->crop; struct v4l2_rect r = s->r; u32 bpp; /* If streaming is started, return error */ if (vb2_is_busy(&vpfe->buffer_queue)) { vpfe_err(vpfe, "%s device busy\n", __func__); return -EBUSY; } if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || s->target != V4L2_SEL_TGT_CROP) return -EINVAL; v4l_bound_align_image(&r.width, 0, cr.width, 0, &r.height, 0, cr.height, 0, 0); r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width); r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height); if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r)) return -ERANGE; if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r)) return -ERANGE; s->r = vpfe->crop = r; bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt); vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, bpp); vpfe->fmt.fmt.pix.width = r.width; vpfe->fmt.fmt.pix.height = r.height; vpfe->fmt.fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline * vpfe->fmt.fmt.pix.height; vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n", r.left, r.top, r.width, r.height, cr.width, cr.height); return 0; } static long vpfe_ioctl_default(struct file *file, void *priv, bool valid_prio, unsigned int cmd, void *param) { struct vpfe_device *vpfe = video_drvdata(file); int ret; if (!valid_prio) { vpfe_err(vpfe, "%s device busy\n", __func__); return -EBUSY; } /* If streaming is started, return error */ if (vb2_is_busy(&vpfe->buffer_queue)) { vpfe_err(vpfe, "%s device busy\n", __func__); return -EBUSY; } switch (cmd) { case VIDIOC_AM437X_CCDC_CFG: ret = vpfe_ccdc_set_params(&vpfe->ccdc, (void __user *)param); if (ret) { vpfe_dbg(2, vpfe, "Error setting parameters in CCDC\n"); return ret; } ret = vpfe_get_ccdc_image_format(vpfe, &vpfe->fmt); if (ret < 0) { vpfe_dbg(2, vpfe, "Invalid image format at CCDC\n"); return ret; } break; default: ret = -ENOTTY; break; } return ret; } static const struct vb2_ops vpfe_video_qops = { .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .queue_setup = vpfe_queue_setup, .buf_prepare = vpfe_buffer_prepare, .buf_queue = vpfe_buffer_queue, .start_streaming = vpfe_start_streaming, .stop_streaming = vpfe_stop_streaming, }; /* vpfe capture driver file operations */ static const struct v4l2_file_operations vpfe_fops = { .owner = THIS_MODULE, .open = vpfe_open, .release = vpfe_release, .read = vb2_fop_read, .poll = vb2_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = vb2_fop_mmap, }; /* vpfe capture ioctl operations */ static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { .vidioc_querycap = vpfe_querycap, .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, .vidioc_g_fmt_vid_cap = vpfe_g_fmt, .vidioc_s_fmt_vid_cap = vpfe_s_fmt, .vidioc_try_fmt_vid_cap = vpfe_try_fmt, .vidioc_enum_framesizes = vpfe_enum_size, .vidioc_enum_input = vpfe_enum_input, .vidioc_g_input = vpfe_g_input, .vidioc_s_input = vpfe_s_input, .vidioc_querystd = vpfe_querystd, .vidioc_s_std = vpfe_s_std, .vidioc_g_std = vpfe_g_std, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, .vidioc_g_pixelaspect = vpfe_g_pixelaspect, .vidioc_g_selection = vpfe_g_selection, .vidioc_s_selection = vpfe_s_selection, .vidioc_default = vpfe_ioctl_default, }; static int vpfe_async_bound(struct v4l2_async_notifier *notifier, struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd) { struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, struct vpfe_device, v4l2_dev); struct v4l2_subdev_mbus_code_enum mbus_code; struct vpfe_subdev_info *sdinfo; struct vpfe_fmt *fmt; int ret = 0; bool found = false; int i, j, k; for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { if (vpfe->cfg->asd[i]->match.fwnode == asd[i].match.fwnode) { sdinfo = &vpfe->cfg->sub_devs[i]; vpfe->sd[i] = subdev; vpfe->sd[i]->grp_id = sdinfo->grp_id; found = true; break; } } if (!found) { vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name); return -EINVAL; } vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std; vpfe->num_active_fmt = 0; for (j = 0, i = 0; (ret != -EINVAL); ++j) { memset(&mbus_code, 0, sizeof(mbus_code)); mbus_code.index = j; mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(subdev, pad, enum_mbus_code, NULL, &mbus_code); if (ret) continue; vpfe_dbg(3, vpfe, "subdev %s: code: %04x idx: %d\n", subdev->name, mbus_code.code, j); for (k = 0; k < ARRAY_SIZE(formats); k++) { fmt = &formats[k]; if (mbus_code.code != fmt->code) continue; vpfe->active_fmt[i] = fmt; vpfe_dbg(3, vpfe, "matched fourcc: %s code: %04x idx: %d\n", print_fourcc(fmt->fourcc), mbus_code.code, i); vpfe->num_active_fmt = ++i; } } if (!i) { vpfe_err(vpfe, "No suitable format reported by subdev %s\n", subdev->name); return -EINVAL; } return 0; } static int vpfe_probe_complete(struct vpfe_device *vpfe) { struct video_device *vdev; struct vb2_queue *q; int err; spin_lock_init(&vpfe->dma_queue_lock); mutex_init(&vpfe->lock); vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; /* set first sub device as current one */ vpfe->current_subdev = &vpfe->cfg->sub_devs[0]; vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler; err = vpfe_set_input(vpfe, 0); if (err) goto probe_out; /* Initialize videobuf2 queue as per the buffer type */ q = &vpfe->buffer_queue; q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; q->drv_priv = vpfe; q->ops = &vpfe_video_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct vpfe_cap_buffer); q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->lock = &vpfe->lock; q->min_buffers_needed = 1; q->dev = vpfe->pdev; err = vb2_queue_init(q); if (err) { vpfe_err(vpfe, "vb2_queue_init() failed\n"); goto probe_out; } INIT_LIST_HEAD(&vpfe->dma_queue); vdev = &vpfe->video_dev; strscpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name)); vdev->release = video_device_release_empty; vdev->fops = &vpfe_fops; vdev->ioctl_ops = &vpfe_ioctl_ops; vdev->v4l2_dev = &vpfe->v4l2_dev; vdev->vfl_dir = VFL_DIR_RX; vdev->queue = q; vdev->lock = &vpfe->lock; vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; video_set_drvdata(vdev, vpfe); err = video_register_device(&vpfe->video_dev, VFL_TYPE_VIDEO, -1); if (err) { vpfe_err(vpfe, "Unable to register video device.\n"); goto probe_out; } return 0; probe_out: v4l2_device_unregister(&vpfe->v4l2_dev); return err; } static int vpfe_async_complete(struct v4l2_async_notifier *notifier) { struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, struct vpfe_device, v4l2_dev); return vpfe_probe_complete(vpfe); } static const struct v4l2_async_notifier_operations vpfe_async_ops = { .bound = vpfe_async_bound, .complete = vpfe_async_complete, }; static struct vpfe_config * vpfe_get_pdata(struct vpfe_device *vpfe) { struct device_node *endpoint = NULL; struct device *dev = vpfe->pdev; struct vpfe_subdev_info *sdinfo; struct vpfe_config *pdata; unsigned int flags; unsigned int i; int err; dev_dbg(dev, "vpfe_get_pdata\n"); v4l2_async_notifier_init(&vpfe->notifier); if (!IS_ENABLED(CONFIG_OF) || !dev->of_node) return dev->platform_data; pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return NULL; for (i = 0; ; i++) { struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; struct device_node *rem; endpoint = of_graph_get_next_endpoint(dev->of_node, endpoint); if (!endpoint) break; sdinfo = &pdata->sub_devs[i]; sdinfo->grp_id = 0; /* we only support camera */ sdinfo->inputs[0].index = i; strscpy(sdinfo->inputs[0].name, "Camera", sizeof(sdinfo->inputs[0].name)); sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA; sdinfo->inputs[0].std = V4L2_STD_ALL; sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD; sdinfo->can_route = 0; sdinfo->routes = NULL; of_property_read_u32(endpoint, "ti,am437x-vpfe-interface", &sdinfo->vpfe_param.if_type); if (sdinfo->vpfe_param.if_type < 0 || sdinfo->vpfe_param.if_type > 4) { sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER; } err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &bus_cfg); if (err) { dev_err(dev, "Could not parse the endpoint\n"); goto cleanup; } sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width; if (sdinfo->vpfe_param.bus_width < 8 || sdinfo->vpfe_param.bus_width > 16) { dev_err(dev, "Invalid bus width.\n"); goto cleanup; } flags = bus_cfg.bus.parallel.flags; if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) sdinfo->vpfe_param.hdpol = 1; if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) sdinfo->vpfe_param.vdpol = 1; rem = of_graph_get_remote_port_parent(endpoint); if (!rem) { dev_err(dev, "Remote device at %pOF not found\n", endpoint); goto cleanup; } pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev( &vpfe->notifier, of_fwnode_handle(rem), sizeof(struct v4l2_async_subdev)); of_node_put(rem); if (IS_ERR(pdata->asd[i])) goto cleanup; } of_node_put(endpoint); return pdata; cleanup: v4l2_async_notifier_cleanup(&vpfe->notifier); of_node_put(endpoint); return NULL; } /* * vpfe_probe : This function creates device entries by register * itself to the V4L2 driver and initializes fields of each * device objects */ static int vpfe_probe(struct platform_device *pdev) { struct vpfe_config *vpfe_cfg; struct vpfe_device *vpfe; struct vpfe_ccdc *ccdc; struct resource *res; int ret; vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL); if (!vpfe) return -ENOMEM; vpfe->pdev = &pdev->dev; vpfe_cfg = vpfe_get_pdata(vpfe); if (!vpfe_cfg) { dev_err(&pdev->dev, "No platform data\n"); return -EINVAL; } vpfe->cfg = vpfe_cfg; ccdc = &vpfe->ccdc; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(ccdc->ccdc_cfg.base_addr)) { ret = PTR_ERR(ccdc->ccdc_cfg.base_addr); goto probe_out_cleanup; } ret = platform_get_irq(pdev, 0); if (ret <= 0) { ret = -ENODEV; goto probe_out_cleanup; } vpfe->irq = ret; ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0, "vpfe_capture0", vpfe); if (ret) { dev_err(&pdev->dev, "Unable to request interrupt\n"); ret = -EINVAL; goto probe_out_cleanup; } ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev); if (ret) { vpfe_err(vpfe, "Unable to register v4l2 device.\n"); goto probe_out_cleanup; } /* set the driver data in platform device */ platform_set_drvdata(pdev, vpfe); /* Enabling module functional clock */ pm_runtime_enable(&pdev->dev); /* for now just enable it here instead of waiting for the open */ pm_runtime_get_sync(&pdev->dev); vpfe_ccdc_config_defaults(ccdc); pm_runtime_put_sync(&pdev->dev); vpfe->sd = devm_kcalloc(&pdev->dev, ARRAY_SIZE(vpfe->cfg->asd), sizeof(struct v4l2_subdev *), GFP_KERNEL); if (!vpfe->sd) { ret = -ENOMEM; goto probe_out_v4l2_unregister; } vpfe->notifier.ops = &vpfe_async_ops; ret = v4l2_async_notifier_register(&vpfe->v4l2_dev, &vpfe->notifier); if (ret) { vpfe_err(vpfe, "Error registering async notifier\n"); ret = -EINVAL; goto probe_out_v4l2_unregister; } return 0; probe_out_v4l2_unregister: v4l2_device_unregister(&vpfe->v4l2_dev); probe_out_cleanup: v4l2_async_notifier_cleanup(&vpfe->notifier); return ret; } /* * vpfe_remove : It un-register device from V4L2 driver */ static int vpfe_remove(struct platform_device *pdev) { struct vpfe_device *vpfe = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); v4l2_async_notifier_unregister(&vpfe->notifier); v4l2_async_notifier_cleanup(&vpfe->notifier); v4l2_device_unregister(&vpfe->v4l2_dev); video_unregister_device(&vpfe->video_dev); return 0; } #ifdef CONFIG_PM_SLEEP static void vpfe_save_context(struct vpfe_ccdc *ccdc) { ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR); ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE); ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST); ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR); ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP); ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB); ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN); ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP); ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT); ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW); ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF); ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG); ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING); ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc, VPFE_HD_VD_WID); ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc, VPFE_PIX_LINES); ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc, VPFE_HORZ_INFO); ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc, VPFE_VERT_START); ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc, VPFE_VERT_LINES); ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc, VPFE_HSIZE_OFF); } static int vpfe_suspend(struct device *dev) { struct vpfe_device *vpfe = dev_get_drvdata(dev); struct vpfe_ccdc *ccdc = &vpfe->ccdc; /* only do full suspend if streaming has started */ if (vb2_start_streaming_called(&vpfe->buffer_queue)) { pm_runtime_get_sync(dev); vpfe_config_enable(ccdc, 1); /* Save VPFE context */ vpfe_save_context(ccdc); /* Disable CCDC */ vpfe_pcr_enable(ccdc, 0); vpfe_config_enable(ccdc, 0); /* Disable both master and slave clock */ pm_runtime_put_sync(dev); } /* Select sleep pin state */ pinctrl_pm_select_sleep_state(dev); return 0; } static void vpfe_restore_context(struct vpfe_ccdc *ccdc) { vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2], VPFE_HD_VD_WID); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2], VPFE_PIX_LINES); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2], VPFE_HORZ_INFO); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2], VPFE_VERT_START); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2], VPFE_VERT_LINES); vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2], VPFE_HSIZE_OFF); } static int vpfe_resume(struct device *dev) { struct vpfe_device *vpfe = dev_get_drvdata(dev); struct vpfe_ccdc *ccdc = &vpfe->ccdc; /* only do full resume if streaming has started */ if (vb2_start_streaming_called(&vpfe->buffer_queue)) { /* Enable both master and slave clock */ pm_runtime_get_sync(dev); vpfe_config_enable(ccdc, 1); /* Restore VPFE context */ vpfe_restore_context(ccdc); vpfe_config_enable(ccdc, 0); pm_runtime_put_sync(dev); } /* Select default pin state */ pinctrl_pm_select_default_state(dev); return 0; } #endif static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume); static const struct of_device_id vpfe_of_match[] = { { .compatible = "ti,am437x-vpfe", }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, vpfe_of_match); static struct platform_driver vpfe_driver = { .probe = vpfe_probe, .remove = vpfe_remove, .driver = { .name = VPFE_MODULE_NAME, .pm = &vpfe_pm_ops, .of_match_table = of_match_ptr(vpfe_of_match), }, }; module_platform_driver(vpfe_driver); MODULE_AUTHOR("Texas Instruments"); MODULE_DESCRIPTION("TI AM437x VPFE driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(VPFE_VERSION);
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